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Diffstat (limited to 'src/vendorcode')
| -rw-r--r-- | src/vendorcode/wuffs/wuffs-v0.4.c | 64187 |
1 files changed, 64187 insertions, 0 deletions
diff --git a/src/vendorcode/wuffs/wuffs-v0.4.c b/src/vendorcode/wuffs/wuffs-v0.4.c new file mode 100644 index 0000000000..bce9eb9798 --- /dev/null +++ b/src/vendorcode/wuffs/wuffs-v0.4.c @@ -0,0 +1,64187 @@ +#ifndef WUFFS_INCLUDE_GUARD +#define WUFFS_INCLUDE_GUARD + +// Wuffs ships as a "single file C library" or "header file library" as per +// https://github.com/nothings/stb/blob/master/docs/stb_howto.txt +// +// To use that single file as a "foo.c"-like implementation, instead of a +// "foo.h"-like header, #define WUFFS_IMPLEMENTATION before #include'ing or +// compiling it. + +// Wuffs' C code is generated automatically, not hand-written. These warnings' +// costs outweigh the benefits. +// +// The "elif defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wimplicit-fallthrough" +#pragma GCC diagnostic ignored "-Wmissing-field-initializers" +#pragma GCC diagnostic ignored "-Wunreachable-code" +#pragma GCC diagnostic ignored "-Wunused-function" +#pragma GCC diagnostic ignored "-Wunused-parameter" +#if defined(__cplusplus) +#pragma GCC diagnostic ignored "-Wold-style-cast" +#endif +#elif defined(__clang__) +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wimplicit-fallthrough" +#pragma clang diagnostic ignored "-Wmissing-field-initializers" +#pragma clang diagnostic ignored "-Wunreachable-code" +#pragma clang diagnostic ignored "-Wunused-function" +#pragma clang diagnostic ignored "-Wunused-parameter" +#if defined(__cplusplus) +#pragma clang diagnostic ignored "-Wold-style-cast" +#endif +#endif + +// Copyright 2017 The Wuffs Authors. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. +// +// SPDX-License-Identifier: Apache-2.0 OR MIT + +#include <stdbool.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +#ifdef __cplusplus +#if (__cplusplus >= 201103L) || defined(_MSC_VER) +#include <memory> +#define WUFFS_BASE__HAVE_EQ_DELETE +#define WUFFS_BASE__HAVE_UNIQUE_PTR +// The "defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#elif defined(__GNUC__) || defined(__clang__) +#warning "Wuffs' C++ code expects -std=c++11 or later" +#endif + +extern "C" { +#endif + +// ---------------- Version + +// WUFFS_VERSION is the major.minor.patch version, as per https://semver.org/, +// as a uint64_t. The major number is the high 32 bits. The minor number is the +// middle 16 bits. The patch number is the low 16 bits. The pre-release label +// and build metadata are part of the string representation (such as +// "1.2.3-beta+456.20181231") but not the uint64_t representation. +// +// WUFFS_VERSION_PRE_RELEASE_LABEL (such as "", "beta" or "rc.1") being +// non-empty denotes a developer preview, not a release version, and has no +// backwards or forwards compatibility guarantees. +// +// WUFFS_VERSION_BUILD_METADATA_XXX, if non-zero, are the number of commits and +// the last commit date in the repository used to build this library. Within +// each major.minor branch, the commit count should increase monotonically. +// +// WUFFS_VERSION was overridden by "wuffs gen -version" based on revision +// ae8531f7f846fbbe3a7340bf88499ad294a1367b committed on 2023-10-07. +#define WUFFS_VERSION 0x000040000 +#define WUFFS_VERSION_MAJOR 0 +#define WUFFS_VERSION_MINOR 4 +#define WUFFS_VERSION_PATCH 0 +#define WUFFS_VERSION_PRE_RELEASE_LABEL "alpha.2" +#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3603 +#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20231007 +#define WUFFS_VERSION_STRING "0.4.0-alpha.2+3603.20231007" + +// ---------------- Configuration + +// Define WUFFS_CONFIG__AVOID_CPU_ARCH to avoid any code tied to a specific CPU +// architecture, such as SSE SIMD for the x86 CPU family. +#if defined(WUFFS_CONFIG__AVOID_CPU_ARCH) // (#if-chain ref AVOID_CPU_ARCH_0) +// No-op. +#else // (#if-chain ref AVOID_CPU_ARCH_0) + +// The "defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#if defined(__GNUC__) || defined(__clang__) +#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) __attribute__((target(arg))) +#else +#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) +#endif // defined(__GNUC__) || defined(__clang__) + +#if defined(__GNUC__) // (#if-chain ref AVOID_CPU_ARCH_1) + +// To simplify Wuffs code, "cpu_arch >= arm_xxx" requires xxx but also +// unaligned little-endian load/stores. +#if defined(__ARM_FEATURE_UNALIGNED) && !defined(__native_client__) && \ + defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) +// Not all gcc versions define __ARM_ACLE, even if they support crc32 +// intrinsics. Look for __ARM_FEATURE_CRC32 instead. +#if defined(__ARM_FEATURE_CRC32) +#include <arm_acle.h> +#define WUFFS_BASE__CPU_ARCH__ARM_CRC32 +#endif // defined(__ARM_FEATURE_CRC32) +#if defined(__ARM_NEON) +#include <arm_neon.h> +#define WUFFS_BASE__CPU_ARCH__ARM_NEON +#endif // defined(__ARM_NEON) +#endif // defined(__ARM_FEATURE_UNALIGNED) etc + +// Similarly, "cpu_arch >= x86_sse42" requires SSE4.2 but also PCLMUL and +// POPCNT. This is checked at runtime via cpuid, not at compile time. +// +// Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2. +#if defined(__i386__) || defined(__x86_64__) +#if !defined(__native_client__) +#include <cpuid.h> +#include <x86intrin.h> +// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously). +#define WUFFS_BASE__CPU_ARCH__X86_FAMILY +#if defined(__x86_64__) +#define WUFFS_BASE__CPU_ARCH__X86_64 +#endif // defined(__x86_64__) +#endif // !defined(__native_client__) +#endif // defined(__i386__) || defined(__x86_64__) + +#elif defined(_MSC_VER) // (#if-chain ref AVOID_CPU_ARCH_1) + +#if defined(_M_IX86) || defined(_M_X64) +#if defined(__AVX__) || defined(__clang__) + +// We need <intrin.h> for the __cpuid function. +#include <intrin.h> +// That's not enough for X64 SIMD, with clang-cl, if we want to use +// "__attribute__((target(arg)))" without e.g. "/arch:AVX". +// +// Some web pages suggest that <immintrin.h> is all you need, as it pulls in +// the earlier SIMD families like SSE4.2, but that doesn't seem to work in +// practice, possibly for the same reason that just <intrin.h> doesn't work. +#include <immintrin.h> // AVX, AVX2, FMA, POPCNT +#include <nmmintrin.h> // SSE4.2 +#include <wmmintrin.h> // AES, PCLMUL +// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously). +#define WUFFS_BASE__CPU_ARCH__X86_FAMILY +#if defined(_M_X64) +#define WUFFS_BASE__CPU_ARCH__X86_64 +#endif // defined(_M_X64) + +#else // defined(__AVX__) || defined(__clang__) + +// clang-cl (which defines both __clang__ and _MSC_VER) supports +// "__attribute__((target(arg)))". +// +// For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time +// property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not +// of individual functions (that can be conditionally selected at runtime). +#pragma message("Wuffs with MSVC+IX86/X64 needs /arch:AVX for best performance") + +#endif // defined(__AVX__) || defined(__clang__) +#endif // defined(_M_IX86) || defined(_M_X64) + +#endif // (#if-chain ref AVOID_CPU_ARCH_1) +#endif // (#if-chain ref AVOID_CPU_ARCH_0) + +// -------- + +// Define WUFFS_CONFIG__STATIC_FUNCTIONS (combined with WUFFS_IMPLEMENTATION) +// to make all of Wuffs' functions have static storage. +// +// This can help the compiler ignore or discard unused code, which can produce +// faster compiles and smaller binaries. Other motivations are discussed in the +// "ALLOW STATIC IMPLEMENTATION" section of +// https://raw.githubusercontent.com/nothings/stb/master/docs/stb_howto.txt +#if defined(WUFFS_CONFIG__STATIC_FUNCTIONS) +#define WUFFS_BASE__MAYBE_STATIC static +#else +#define WUFFS_BASE__MAYBE_STATIC +#endif // defined(WUFFS_CONFIG__STATIC_FUNCTIONS) + +// ---------------- CPU Architecture + +static inline bool // +wuffs_base__cpu_arch__have_arm_crc32(void) { +#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) + return true; +#else + return false; +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) +} + +static inline bool // +wuffs_base__cpu_arch__have_arm_neon(void) { +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + return true; +#else + return false; +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +} + +static inline bool // +wuffs_base__cpu_arch__have_x86_avx2(void) { +#if defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) && \ + defined(__AVX2__) + return true; +#else +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) + // GCC defines these macros but MSVC does not. + // - bit_AVX2 = (1 << 5) + const unsigned int avx2_ebx7 = 0x00000020; + // GCC defines these macros but MSVC does not. + // - bit_PCLMUL = (1 << 1) + // - bit_POPCNT = (1 << 23) + // - bit_SSE4_2 = (1 << 20) + const unsigned int avx2_ecx1 = 0x00900002; + + // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). +#if defined(__GNUC__) + unsigned int eax7 = 0; + unsigned int ebx7 = 0; + unsigned int ecx7 = 0; + unsigned int edx7 = 0; + if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && + ((ebx7 & avx2_ebx7) == avx2_ebx7)) { + unsigned int eax1 = 0; + unsigned int ebx1 = 0; + unsigned int ecx1 = 0; + unsigned int edx1 = 0; + if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && + ((ecx1 & avx2_ecx1) == avx2_ecx1)) { + return true; + } + } +#elif defined(_MSC_VER) // defined(__GNUC__) + int x7[4]; + __cpuidex(x7, 7, 0); + if ((((unsigned int)(x7[1])) & avx2_ebx7) == avx2_ebx7) { + int x1[4]; + __cpuid(x1, 1); + if ((((unsigned int)(x1[2])) & avx2_ecx1) == avx2_ecx1) { + return true; + } + } +#else +#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" +#endif // defined(__GNUC__); defined(_MSC_VER) +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) + return false; +#endif // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) && + // defined(__AVX2__) +} + +static inline bool // +wuffs_base__cpu_arch__have_x86_bmi2(void) { +#if defined(__BMI2__) + return true; +#else +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + // GCC defines these macros but MSVC does not. + // - bit_BMI2 = (1 << 8) + const unsigned int bmi2_ebx7 = 0x00000100; + + // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). +#if defined(__GNUC__) + unsigned int eax7 = 0; + unsigned int ebx7 = 0; + unsigned int ecx7 = 0; + unsigned int edx7 = 0; + if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && + ((ebx7 & bmi2_ebx7) == bmi2_ebx7)) { + return true; + } +#elif defined(_MSC_VER) // defined(__GNUC__) + int x7[4]; + __cpuidex(x7, 7, 0); + if ((((unsigned int)(x7[1])) & bmi2_ebx7) == bmi2_ebx7) { + return true; + } +#else +#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" +#endif // defined(__GNUC__); defined(_MSC_VER) +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + return false; +#endif // defined(__BMI2__) +} + +static inline bool // +wuffs_base__cpu_arch__have_x86_sse42(void) { +#if defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) + return true; +#else +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + // GCC defines these macros but MSVC does not. + // - bit_PCLMUL = (1 << 1) + // - bit_POPCNT = (1 << 23) + // - bit_SSE4_2 = (1 << 20) + const unsigned int sse42_ecx1 = 0x00900002; + + // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). +#if defined(__GNUC__) + unsigned int eax1 = 0; + unsigned int ebx1 = 0; + unsigned int ecx1 = 0; + unsigned int edx1 = 0; + if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && + ((ecx1 & sse42_ecx1) == sse42_ecx1)) { + return true; + } +#elif defined(_MSC_VER) // defined(__GNUC__) + int x1[4]; + __cpuid(x1, 1); + if ((((unsigned int)(x1[2])) & sse42_ecx1) == sse42_ecx1) { + return true; + } +#else +#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" +#endif // defined(__GNUC__); defined(_MSC_VER) +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + return false; +#endif // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) +} + +// ---------------- Fundamentals + +// Wuffs assumes that: +// - converting a uint32_t to a size_t will never overflow. +// - converting a size_t to a uint64_t will never overflow. +#if defined(__WORDSIZE) +#if (__WORDSIZE != 32) && (__WORDSIZE != 64) +#error "Wuffs requires a word size of either 32 or 64 bits" +#endif +#endif + +// The "defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#if defined(__GNUC__) || defined(__clang__) +#define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused)) +#define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result)) +#else +#define WUFFS_BASE__POTENTIALLY_UNUSED +#define WUFFS_BASE__WARN_UNUSED_RESULT +#endif + +// Clang's "-fsanitize=integer" checks for "unsigned-integer-overflow" even +// though, for *unsigned* integers, it is *not* undefined behavior. The check +// is still made because unsigned integer overflow "is often unintentional". +// https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html +// +// However, for Wuffs' generated C code, unsigned overflow is intentional. The +// programmer has to use "~mod+" instead of a plain "+" operator in Wuffs code. +// Further runtime checks for unsigned integer overflow can add performance +// overhead (fuzzers can then time out) and can raise false negatives, without +// generating much benefits. We disable the "unsigned-integer-overflow" check. +#if defined(__has_feature) +#if __has_feature(undefined_behavior_sanitizer) +#define WUFFS_BASE__GENERATED_C_CODE \ + __attribute__((no_sanitize("unsigned-integer-overflow"))) +#endif +#endif +#if !defined(WUFFS_BASE__GENERATED_C_CODE) +#define WUFFS_BASE__GENERATED_C_CODE +#endif + +// -------- + +// Options (bitwise or'ed together) for wuffs_foo__bar__initialize functions. + +#define WUFFS_INITIALIZE__DEFAULT_OPTIONS ((uint32_t)0x00000000) + +// WUFFS_INITIALIZE__ALREADY_ZEROED means that the "self" receiver struct value +// has already been set to all zeroes. +#define WUFFS_INITIALIZE__ALREADY_ZEROED ((uint32_t)0x00000001) + +// WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED means that, absent +// WUFFS_INITIALIZE__ALREADY_ZEROED, only some of the "self" receiver struct +// value will be set to all zeroes. Internal buffers, which tend to be a large +// proportion of the struct's size, will be left uninitialized. Internal means +// that the buffer is contained by the receiver struct, as opposed to being +// passed as a separately allocated "work buffer". +// +// For more detail, see: +// https://github.com/google/wuffs/blob/main/doc/note/initialization.md +#define WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED \ + ((uint32_t)0x00000002) + +// -------- + +#ifdef __cplusplus +// Wuffs structs are just data, not resources (in the RAII sense). They don't +// subclass anything. They don't have virtual destructors. They don't contain +// pointers to dynamically allocated memory. They don't contain file +// descriptors. And so on. Destroying such a struct (e.g. via a +// wuffs_foo__bar::unique_ptr) can just call free, especially as +// sizeof(wuffs_foo__bar) isn't supposed to be part of the public (stable) API. +struct wuffs_unique_ptr_deleter { + void operator()(void* p) { free(p); } +}; +#endif // __cplusplus + +// -------- + +// wuffs_base__empty_struct is used when a Wuffs function returns an empty +// struct. In C, if a function f returns void, you can't say "x = f()", but in +// Wuffs, if a function g returns empty, you can say "y = g()". +typedef struct wuffs_base__empty_struct__struct { + // private_impl is a placeholder field. It isn't explicitly used, except that + // without it, the sizeof a struct with no fields can differ across C/C++ + // compilers, and it is undefined behavior in C99. For example, gcc says that + // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to + // ABI incompatibility if a Wuffs .c file is processed by one compiler and + // its .h file with another compiler. + // + // Instead, we explicitly insert an otherwise unused field, so that the + // sizeof this struct is always 1. + uint8_t private_impl; +} wuffs_base__empty_struct; + +static inline wuffs_base__empty_struct // +wuffs_base__make_empty_struct(void) { + wuffs_base__empty_struct ret; + ret.private_impl = 0; + return ret; +} + +// wuffs_base__utility is a placeholder receiver type. It enables what Java +// calls static methods, as opposed to regular methods. +typedef struct wuffs_base__utility__struct { + // private_impl is a placeholder field. It isn't explicitly used, except that + // without it, the sizeof a struct with no fields can differ across C/C++ + // compilers, and it is undefined behavior in C99. For example, gcc says that + // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to + // ABI incompatibility if a Wuffs .c file is processed by one compiler and + // its .h file with another compiler. + // + // Instead, we explicitly insert an otherwise unused field, so that the + // sizeof this struct is always 1. + uint8_t private_impl; +} wuffs_base__utility; + +typedef struct wuffs_base__vtable__struct { + const char* vtable_name; + const void* function_pointers; +} wuffs_base__vtable; + +// -------- + +// See https://github.com/google/wuffs/blob/main/doc/note/statuses.md +typedef struct wuffs_base__status__struct { + const char* repr; + +#ifdef __cplusplus + inline bool is_complete() const; + inline bool is_error() const; + inline bool is_note() const; + inline bool is_ok() const; + inline bool is_suspension() const; + inline bool is_truncated_input_error() const; + inline const char* message() const; +#endif // __cplusplus + +} wuffs_base__status; + +extern const char wuffs_base__note__i_o_redirect[]; +extern const char wuffs_base__note__end_of_data[]; +extern const char wuffs_base__note__metadata_reported[]; +extern const char wuffs_base__suspension__even_more_information[]; +extern const char wuffs_base__suspension__mispositioned_read[]; +extern const char wuffs_base__suspension__mispositioned_write[]; +extern const char wuffs_base__suspension__short_read[]; +extern const char wuffs_base__suspension__short_write[]; +extern const char wuffs_base__error__bad_i_o_position[]; +extern const char wuffs_base__error__bad_argument_length_too_short[]; +extern const char wuffs_base__error__bad_argument[]; +extern const char wuffs_base__error__bad_call_sequence[]; +extern const char wuffs_base__error__bad_data[]; +extern const char wuffs_base__error__bad_receiver[]; +extern const char wuffs_base__error__bad_restart[]; +extern const char wuffs_base__error__bad_sizeof_receiver[]; +extern const char wuffs_base__error__bad_vtable[]; +extern const char wuffs_base__error__bad_workbuf_length[]; +extern const char wuffs_base__error__bad_wuffs_version[]; +extern const char wuffs_base__error__cannot_return_a_suspension[]; +extern const char wuffs_base__error__disabled_by_previous_error[]; +extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[]; +extern const char wuffs_base__error__initialize_not_called[]; +extern const char wuffs_base__error__interleaved_coroutine_calls[]; +extern const char wuffs_base__error__no_more_information[]; +extern const char wuffs_base__error__not_enough_data[]; +extern const char wuffs_base__error__out_of_bounds[]; +extern const char wuffs_base__error__unsupported_image_dimension[]; +extern const char wuffs_base__error__unsupported_method[]; +extern const char wuffs_base__error__unsupported_option[]; +extern const char wuffs_base__error__unsupported_pixel_swizzler_option[]; +extern const char wuffs_base__error__too_much_data[]; + +static inline wuffs_base__status // +wuffs_base__make_status(const char* repr) { + wuffs_base__status z; + z.repr = repr; + return z; +} + +static inline bool // +wuffs_base__status__is_complete(const wuffs_base__status* z) { + return (z->repr == NULL) || ((*z->repr != '$') && (*z->repr != '#')); +} + +static inline bool // +wuffs_base__status__is_error(const wuffs_base__status* z) { + return z->repr && (*z->repr == '#'); +} + +static inline bool // +wuffs_base__status__is_note(const wuffs_base__status* z) { + return z->repr && (*z->repr != '$') && (*z->repr != '#'); +} + +static inline bool // +wuffs_base__status__is_ok(const wuffs_base__status* z) { + return z->repr == NULL; +} + +static inline bool // +wuffs_base__status__is_suspension(const wuffs_base__status* z) { + return z->repr && (*z->repr == '$'); +} + +static inline bool // +wuffs_base__status__is_truncated_input_error(const wuffs_base__status* z) { + const char* p = z->repr; + if (!p || (*p != '#')) { + return false; + } + p++; + while (1) { + if (*p == 0) { + return false; + } else if (*p++ == ':') { + break; + } + } + return strcmp(p, " truncated input") == 0; +} + +// wuffs_base__status__message strips the leading '$', '#' or '@'. +static inline const char* // +wuffs_base__status__message(const wuffs_base__status* z) { + if (z->repr) { + if ((*z->repr == '$') || (*z->repr == '#') || (*z->repr == '@')) { + return z->repr + 1; + } + } + return z->repr; +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__status::is_complete() const { + return wuffs_base__status__is_complete(this); +} + +inline bool // +wuffs_base__status::is_error() const { + return wuffs_base__status__is_error(this); +} + +inline bool // +wuffs_base__status::is_note() const { + return wuffs_base__status__is_note(this); +} + +inline bool // +wuffs_base__status::is_ok() const { + return wuffs_base__status__is_ok(this); +} + +inline bool // +wuffs_base__status::is_suspension() const { + return wuffs_base__status__is_suspension(this); +} + +inline bool // +wuffs_base__status::is_truncated_input_error() const { + return wuffs_base__status__is_truncated_input_error(this); +} + +inline const char* // +wuffs_base__status::message() const { + return wuffs_base__status__message(this); +} + +#endif // __cplusplus + +// -------- + +// WUFFS_BASE__RESULT is a result type: either a status (an error) or a value. +// +// A result with all fields NULL or zero is as valid as a zero-valued T. +#define WUFFS_BASE__RESULT(T) \ + struct { \ + wuffs_base__status status; \ + T value; \ + } + +typedef WUFFS_BASE__RESULT(double) wuffs_base__result_f64; +typedef WUFFS_BASE__RESULT(int64_t) wuffs_base__result_i64; +typedef WUFFS_BASE__RESULT(uint64_t) wuffs_base__result_u64; + +// -------- + +// wuffs_base__transform__output is the result of transforming from a src slice +// to a dst slice. +typedef struct wuffs_base__transform__output__struct { + wuffs_base__status status; + size_t num_dst; + size_t num_src; +} wuffs_base__transform__output; + +// -------- + +// FourCC constants. Four Character Codes are literally four ASCII characters +// (sometimes padded with ' ' spaces) that pack neatly into a signed or +// unsigned 32-bit integer. ASCII letters are conventionally upper case. +// +// They are often used to identify video codecs (e.g. "H265") and pixel formats +// (e.g. "YV12"). Wuffs uses them for that but also generally for naming +// various things: compression formats (e.g. "BZ2 "), image metadata (e.g. +// "EXIF"), file formats (e.g. "HTML"), etc. +// +// Wuffs' u32 values are big-endian ("JPEG" is 0x4A504547 not 0x4745504A) to +// preserve ordering: "JPEG" < "MP3 " and 0x4A504547 < 0x4D503320. + +// Background Color. +#define WUFFS_BASE__FOURCC__BGCL 0x4247434C + +// Bitmap. +#define WUFFS_BASE__FOURCC__BMP 0x424D5020 + +// Brotli. +#define WUFFS_BASE__FOURCC__BRTL 0x4252544C + +// Bzip2. +#define WUFFS_BASE__FOURCC__BZ2 0x425A3220 + +// Concise Binary Object Representation. +#define WUFFS_BASE__FOURCC__CBOR 0x43424F52 + +// Primary Chromaticities and White Point. +#define WUFFS_BASE__FOURCC__CHRM 0x4348524D + +// Cascading Style Sheets. +#define WUFFS_BASE__FOURCC__CSS 0x43535320 + +// Encapsulated PostScript. +#define WUFFS_BASE__FOURCC__EPS 0x45505320 + +// Exchangeable Image File Format. +#define WUFFS_BASE__FOURCC__EXIF 0x45584946 + +// Free Lossless Audio Codec. +#define WUFFS_BASE__FOURCC__FLAC 0x464C4143 + +// Gamma Correction. +#define WUFFS_BASE__FOURCC__GAMA 0x47414D41 + +// Graphics Interchange Format. +#define WUFFS_BASE__FOURCC__GIF 0x47494620 + +// GNU Zip. +#define WUFFS_BASE__FOURCC__GZ 0x475A2020 + +// High Efficiency Image File. +#define WUFFS_BASE__FOURCC__HEIF 0x48454946 + +// Hypertext Markup Language. +#define WUFFS_BASE__FOURCC__HTML 0x48544D4C + +// International Color Consortium Profile. +#define WUFFS_BASE__FOURCC__ICCP 0x49434350 + +// Icon. +#define WUFFS_BASE__FOURCC__ICO 0x49434F20 + +// Icon Vector Graphics. +#define WUFFS_BASE__FOURCC__ICVG 0x49435647 + +// Initialization. +#define WUFFS_BASE__FOURCC__INI 0x494E4920 + +// Joint Photographic Experts Group. +#define WUFFS_BASE__FOURCC__JPEG 0x4A504547 + +// JavaScript. +#define WUFFS_BASE__FOURCC__JS 0x4A532020 + +// JavaScript Object Notation. +#define WUFFS_BASE__FOURCC__JSON 0x4A534F4E + +// JSON With Commas and Comments. +#define WUFFS_BASE__FOURCC__JWCC 0x4A574343 + +// Key-Value Pair. +#define WUFFS_BASE__FOURCC__KVP 0x4B565020 + +// Key-Value Pair (Key). +#define WUFFS_BASE__FOURCC__KVPK 0x4B56504B + +// Key-Value Pair (Value). +#define WUFFS_BASE__FOURCC__KVPV 0x4B565056 + +// Lempel–Ziv 4. +#define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420 + +// Lempel–Ziv Markov-chain Algorithm. +#define WUFFS_BASE__FOURCC__LZMA 0x4C5A4D41 + +// Markdown. +#define WUFFS_BASE__FOURCC__MD 0x4D442020 + +// Modification Time. +#define WUFFS_BASE__FOURCC__MTIM 0x4D54494D + +// MPEG-1 Audio Layer III. +#define WUFFS_BASE__FOURCC__MP3 0x4D503320 + +// Naive Image. +#define WUFFS_BASE__FOURCC__NIE 0x4E494520 + +// Netpbm (Portable Anymap). +#define WUFFS_BASE__FOURCC__NPBM 0x4E50424D + +// Offset (2-Dimensional). +#define WUFFS_BASE__FOURCC__OFS2 0x4F465332 + +// Open Type Format. +#define WUFFS_BASE__FOURCC__OTF 0x4F544620 + +// Portable Document Format. +#define WUFFS_BASE__FOURCC__PDF 0x50444620 + +// Physical Dimensions. +#define WUFFS_BASE__FOURCC__PHYD 0x50485944 + +// Portable Network Graphics. +#define WUFFS_BASE__FOURCC__PNG 0x504E4720 + +// PostScript. +#define WUFFS_BASE__FOURCC__PS 0x50532020 + +// Quite OK Image. +#define WUFFS_BASE__FOURCC__QOI 0x514F4920 + +// Random Access Compression. +#define WUFFS_BASE__FOURCC__RAC 0x52414320 + +// Raw. +#define WUFFS_BASE__FOURCC__RAW 0x52415720 + +// Resource Interchange File Format. +#define WUFFS_BASE__FOURCC__RIFF 0x52494646 + +// Riegeli Records. +#define WUFFS_BASE__FOURCC__RIGL 0x5249474C + +// Snappy. +#define WUFFS_BASE__FOURCC__SNPY 0x534E5059 + +// Standard Red Green Blue (Rendering Intent). +#define WUFFS_BASE__FOURCC__SRGB 0x53524742 + +// Scalable Vector Graphics. +#define WUFFS_BASE__FOURCC__SVG 0x53564720 + +// Tape Archive. +#define WUFFS_BASE__FOURCC__TAR 0x54415220 + +// Text. +#define WUFFS_BASE__FOURCC__TEXT 0x54455854 + +// Truevision Advanced Raster Graphics Adapter. +#define WUFFS_BASE__FOURCC__TGA 0x54474120 + +// Tagged Image File Format. +#define WUFFS_BASE__FOURCC__TIFF 0x54494646 + +// Tom's Obvious Minimal Language. +#define WUFFS_BASE__FOURCC__TOML 0x544F4D4C + +// Waveform. +#define WUFFS_BASE__FOURCC__WAVE 0x57415645 + +// Wireless Bitmap. +#define WUFFS_BASE__FOURCC__WBMP 0x57424D50 + +// Web Picture. +#define WUFFS_BASE__FOURCC__WEBP 0x57454250 + +// Web Open Font Format. +#define WUFFS_BASE__FOURCC__WOFF 0x574F4646 + +// Extensible Markup Language. +#define WUFFS_BASE__FOURCC__XML 0x584D4C20 + +// Extensible Metadata Platform. +#define WUFFS_BASE__FOURCC__XMP 0x584D5020 + +// Xz. +#define WUFFS_BASE__FOURCC__XZ 0x585A2020 + +// Zip. +#define WUFFS_BASE__FOURCC__ZIP 0x5A495020 + +// Zlib. +#define WUFFS_BASE__FOURCC__ZLIB 0x5A4C4942 + +// Zstandard. +#define WUFFS_BASE__FOURCC__ZSTD 0x5A535444 + +// -------- + +// Quirks. + +#define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1 + +// -------- + +// Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a +// second. See https://github.com/OculusVR/Flicks +typedef int64_t wuffs_base__flicks; + +#define WUFFS_BASE__FLICKS_PER_SECOND ((uint64_t)705600000) +#define WUFFS_BASE__FLICKS_PER_MILLISECOND ((uint64_t)705600) + +// ---------------- Numeric Types + +// The helpers below are functions, instead of macros, because their arguments +// can be an expression that we shouldn't evaluate more than once. +// +// They are static, so that linking multiple wuffs .o files won't complain about +// duplicate function definitions. +// +// They are explicitly marked inline, even if modern compilers don't use the +// inline attribute to guide optimizations such as inlining, to avoid the +// -Wunused-function warning, and we like to compile with -Wall -Werror. + +static inline int8_t // +wuffs_base__i8__min(int8_t x, int8_t y) { + return x < y ? x : y; +} + +static inline int8_t // +wuffs_base__i8__max(int8_t x, int8_t y) { + return x > y ? x : y; +} + +static inline int16_t // +wuffs_base__i16__min(int16_t x, int16_t y) { + return x < y ? x : y; +} + +static inline int16_t // +wuffs_base__i16__max(int16_t x, int16_t y) { + return x > y ? x : y; +} + +static inline int32_t // +wuffs_base__i32__min(int32_t x, int32_t y) { + return x < y ? x : y; +} + +static inline int32_t // +wuffs_base__i32__max(int32_t x, int32_t y) { + return x > y ? x : y; +} + +static inline int64_t // +wuffs_base__i64__min(int64_t x, int64_t y) { + return x < y ? x : y; +} + +static inline int64_t // +wuffs_base__i64__max(int64_t x, int64_t y) { + return x > y ? x : y; +} + +static inline uint8_t // +wuffs_base__u8__min(uint8_t x, uint8_t y) { + return x < y ? x : y; +} + +static inline uint8_t // +wuffs_base__u8__max(uint8_t x, uint8_t y) { + return x > y ? x : y; +} + +static inline uint16_t // +wuffs_base__u16__min(uint16_t x, uint16_t y) { + return x < y ? x : y; +} + +static inline uint16_t // +wuffs_base__u16__max(uint16_t x, uint16_t y) { + return x > y ? x : y; +} + +static inline uint32_t // +wuffs_base__u32__min(uint32_t x, uint32_t y) { + return x < y ? x : y; +} + +static inline uint32_t // +wuffs_base__u32__max(uint32_t x, uint32_t y) { + return x > y ? x : y; +} + +static inline uint64_t // +wuffs_base__u64__min(uint64_t x, uint64_t y) { + return x < y ? x : y; +} + +static inline uint64_t // +wuffs_base__u64__max(uint64_t x, uint64_t y) { + return x > y ? x : y; +} + +// -------- + +static inline uint8_t // +wuffs_base__u8__rotate_left(uint8_t x, uint32_t n) { + n &= 7; + return ((uint8_t)(x << n)) | ((uint8_t)(x >> (8 - n))); +} + +static inline uint8_t // +wuffs_base__u8__rotate_right(uint8_t x, uint32_t n) { + n &= 7; + return ((uint8_t)(x >> n)) | ((uint8_t)(x << (8 - n))); +} + +static inline uint16_t // +wuffs_base__u16__rotate_left(uint16_t x, uint32_t n) { + n &= 15; + return ((uint16_t)(x << n)) | ((uint16_t)(x >> (16 - n))); +} + +static inline uint16_t // +wuffs_base__u16__rotate_right(uint16_t x, uint32_t n) { + n &= 15; + return ((uint16_t)(x >> n)) | ((uint16_t)(x << (16 - n))); +} + +static inline uint32_t // +wuffs_base__u32__rotate_left(uint32_t x, uint32_t n) { + n &= 31; + return ((uint32_t)(x << n)) | ((uint32_t)(x >> (32 - n))); +} + +static inline uint32_t // +wuffs_base__u32__rotate_right(uint32_t x, uint32_t n) { + n &= 31; + return ((uint32_t)(x >> n)) | ((uint32_t)(x << (32 - n))); +} + +static inline uint64_t // +wuffs_base__u64__rotate_left(uint64_t x, uint32_t n) { + n &= 63; + return ((uint64_t)(x << n)) | ((uint64_t)(x >> (64 - n))); +} + +static inline uint64_t // +wuffs_base__u64__rotate_right(uint64_t x, uint32_t n) { + n &= 63; + return ((uint64_t)(x >> n)) | ((uint64_t)(x << (64 - n))); +} + +// -------- + +// Saturating arithmetic (sat_add, sat_sub) branchless bit-twiddling algorithms +// are per https://locklessinc.com/articles/sat_arithmetic/ +// +// It is important that the underlying types are unsigned integers, as signed +// integer arithmetic overflow is undefined behavior in C. + +static inline uint8_t // +wuffs_base__u8__sat_add(uint8_t x, uint8_t y) { + uint8_t res = (uint8_t)(x + y); + res |= (uint8_t)(-(res < x)); + return res; +} + +static inline uint8_t // +wuffs_base__u8__sat_sub(uint8_t x, uint8_t y) { + uint8_t res = (uint8_t)(x - y); + res &= (uint8_t)(-(res <= x)); + return res; +} + +static inline uint16_t // +wuffs_base__u16__sat_add(uint16_t x, uint16_t y) { + uint16_t res = (uint16_t)(x + y); + res |= (uint16_t)(-(res < x)); + return res; +} + +static inline uint16_t // +wuffs_base__u16__sat_sub(uint16_t x, uint16_t y) { + uint16_t res = (uint16_t)(x - y); + res &= (uint16_t)(-(res <= x)); + return res; +} + +static inline uint32_t // +wuffs_base__u32__sat_add(uint32_t x, uint32_t y) { + uint32_t res = (uint32_t)(x + y); + res |= (uint32_t)(-(res < x)); + return res; +} + +static inline uint32_t // +wuffs_base__u32__sat_sub(uint32_t x, uint32_t y) { + uint32_t res = (uint32_t)(x - y); + res &= (uint32_t)(-(res <= x)); + return res; +} + +static inline uint64_t // +wuffs_base__u64__sat_add(uint64_t x, uint64_t y) { + uint64_t res = (uint64_t)(x + y); + res |= (uint64_t)(-(res < x)); + return res; +} + +static inline uint64_t // +wuffs_base__u64__sat_sub(uint64_t x, uint64_t y) { + uint64_t res = (uint64_t)(x - y); + res &= (uint64_t)(-(res <= x)); + return res; +} + +// -------- + +typedef struct wuffs_base__multiply_u64__output__struct { + uint64_t lo; + uint64_t hi; +} wuffs_base__multiply_u64__output; + +// wuffs_base__multiply_u64 returns x*y as a 128-bit value. +// +// The maximum inclusive output hi_lo is 0xFFFFFFFFFFFFFFFE_0000000000000001. +static inline wuffs_base__multiply_u64__output // +wuffs_base__multiply_u64(uint64_t x, uint64_t y) { +#if defined(__SIZEOF_INT128__) + __uint128_t z = ((__uint128_t)x) * ((__uint128_t)y); + wuffs_base__multiply_u64__output o; + o.lo = ((uint64_t)(z)); + o.hi = ((uint64_t)(z >> 64)); + return o; +#else + // TODO: consider using the _mul128 intrinsic if defined(_MSC_VER). + uint64_t x0 = x & 0xFFFFFFFF; + uint64_t x1 = x >> 32; + uint64_t y0 = y & 0xFFFFFFFF; + uint64_t y1 = y >> 32; + uint64_t w0 = x0 * y0; + uint64_t t = (x1 * y0) + (w0 >> 32); + uint64_t w1 = t & 0xFFFFFFFF; + uint64_t w2 = t >> 32; + w1 += x0 * y1; + wuffs_base__multiply_u64__output o; + o.lo = x * y; + o.hi = (x1 * y1) + w2 + (w1 >> 32); + return o; +#endif +} + +// -------- + +// The "defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#if (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8) + +static inline uint32_t // +wuffs_base__count_leading_zeroes_u64(uint64_t u) { + return u ? ((uint32_t)(__builtin_clzl(u))) : 64u; +} + +#else +// TODO: consider using the _BitScanReverse intrinsic if defined(_MSC_VER). + +static inline uint32_t // +wuffs_base__count_leading_zeroes_u64(uint64_t u) { + if (u == 0) { + return 64; + } + + uint32_t n = 0; + if ((u >> 32) == 0) { + n |= 32; + u <<= 32; + } + if ((u >> 48) == 0) { + n |= 16; + u <<= 16; + } + if ((u >> 56) == 0) { + n |= 8; + u <<= 8; + } + if ((u >> 60) == 0) { + n |= 4; + u <<= 4; + } + if ((u >> 62) == 0) { + n |= 2; + u <<= 2; + } + if ((u >> 63) == 0) { + n |= 1; + u <<= 1; + } + return n; +} + +#endif // (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8) + +// -------- + +// Normally, the wuffs_base__peek_etc and wuffs_base__poke_etc implementations +// are both (1) correct regardless of CPU endianness and (2) very fast (e.g. an +// inlined wuffs_base__peek_u32le__no_bounds_check call, in an optimized clang +// or gcc build, is a single MOV instruction on x86_64). +// +// However, the endian-agnostic implementations are slow on Microsoft's C +// compiler (MSC). Alternative memcpy-based implementations restore speed, but +// they are only correct on little-endian CPU architectures. Defining +// WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE opts in to these implementations. +// +// https://godbolt.org/z/q4MfjzTPh +#if defined(_MSC_VER) && !defined(__clang__) && \ + (defined(_M_ARM64) || defined(_M_X64)) +#define WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE +#endif + +#define wuffs_base__peek_u8be__no_bounds_check \ + wuffs_base__peek_u8__no_bounds_check +#define wuffs_base__peek_u8le__no_bounds_check \ + wuffs_base__peek_u8__no_bounds_check + +static inline uint8_t // +wuffs_base__peek_u8__no_bounds_check(const uint8_t* p) { + return p[0]; +} + +static inline uint16_t // +wuffs_base__peek_u16be__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint16_t x; + memcpy(&x, p, 2); + return _byteswap_ushort(x); +#else + return (uint16_t)(((uint16_t)(p[0]) << 8) | ((uint16_t)(p[1]) << 0)); +#endif +} + +static inline uint16_t // +wuffs_base__peek_u16le__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint16_t x; + memcpy(&x, p, 2); + return x; +#else + return (uint16_t)(((uint16_t)(p[0]) << 0) | ((uint16_t)(p[1]) << 8)); +#endif +} + +static inline uint32_t // +wuffs_base__peek_u24be__no_bounds_check(const uint8_t* p) { + return ((uint32_t)(p[0]) << 16) | ((uint32_t)(p[1]) << 8) | + ((uint32_t)(p[2]) << 0); +} + +static inline uint32_t // +wuffs_base__peek_u24le__no_bounds_check(const uint8_t* p) { + return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | + ((uint32_t)(p[2]) << 16); +} + +static inline uint32_t // +wuffs_base__peek_u32be__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint32_t x; + memcpy(&x, p, 4); + return _byteswap_ulong(x); +#else + return ((uint32_t)(p[0]) << 24) | ((uint32_t)(p[1]) << 16) | + ((uint32_t)(p[2]) << 8) | ((uint32_t)(p[3]) << 0); +#endif +} + +static inline uint32_t // +wuffs_base__peek_u32le__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint32_t x; + memcpy(&x, p, 4); + return x; +#else + return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | + ((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24); +#endif +} + +static inline uint64_t // +wuffs_base__peek_u40be__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 32) | ((uint64_t)(p[1]) << 24) | + ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 8) | + ((uint64_t)(p[4]) << 0); +} + +static inline uint64_t // +wuffs_base__peek_u40le__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | + ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | + ((uint64_t)(p[4]) << 32); +} + +static inline uint64_t // +wuffs_base__peek_u48be__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 40) | ((uint64_t)(p[1]) << 32) | + ((uint64_t)(p[2]) << 24) | ((uint64_t)(p[3]) << 16) | + ((uint64_t)(p[4]) << 8) | ((uint64_t)(p[5]) << 0); +} + +static inline uint64_t // +wuffs_base__peek_u48le__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | + ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | + ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40); +} + +static inline uint64_t // +wuffs_base__peek_u56be__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 48) | ((uint64_t)(p[1]) << 40) | + ((uint64_t)(p[2]) << 32) | ((uint64_t)(p[3]) << 24) | + ((uint64_t)(p[4]) << 16) | ((uint64_t)(p[5]) << 8) | + ((uint64_t)(p[6]) << 0); +} + +static inline uint64_t // +wuffs_base__peek_u56le__no_bounds_check(const uint8_t* p) { + return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | + ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | + ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | + ((uint64_t)(p[6]) << 48); +} + +static inline uint64_t // +wuffs_base__peek_u64be__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint64_t x; + memcpy(&x, p, 8); + return _byteswap_uint64(x); +#else + return ((uint64_t)(p[0]) << 56) | ((uint64_t)(p[1]) << 48) | + ((uint64_t)(p[2]) << 40) | ((uint64_t)(p[3]) << 32) | + ((uint64_t)(p[4]) << 24) | ((uint64_t)(p[5]) << 16) | + ((uint64_t)(p[6]) << 8) | ((uint64_t)(p[7]) << 0); +#endif +} + +static inline uint64_t // +wuffs_base__peek_u64le__no_bounds_check(const uint8_t* p) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) + uint64_t x; + memcpy(&x, p, 8); + return x; +#else + return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | + ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | + ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | + ((uint64_t)(p[6]) << 48) | ((uint64_t)(p[7]) << 56); +#endif +} + +// -------- + +#define wuffs_base__poke_u8be__no_bounds_check \ + wuffs_base__poke_u8__no_bounds_check +#define wuffs_base__poke_u8le__no_bounds_check \ + wuffs_base__poke_u8__no_bounds_check + +static inline void // +wuffs_base__poke_u8__no_bounds_check(uint8_t* p, uint8_t x) { + p[0] = x; +} + +static inline void // +wuffs_base__poke_u16be__no_bounds_check(uint8_t* p, uint16_t x) { + p[0] = (uint8_t)(x >> 8); + p[1] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u16le__no_bounds_check(uint8_t* p, uint16_t x) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ + (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) + // This seems to perform better on gcc 10 (but not clang 9). Clang also + // defines "__GNUC__". + memcpy(p, &x, 2); +#else + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); +#endif +} + +static inline void // +wuffs_base__poke_u24be__no_bounds_check(uint8_t* p, uint32_t x) { + p[0] = (uint8_t)(x >> 16); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u24le__no_bounds_check(uint8_t* p, uint32_t x) { + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); +} + +static inline void // +wuffs_base__poke_u32be__no_bounds_check(uint8_t* p, uint32_t x) { + p[0] = (uint8_t)(x >> 24); + p[1] = (uint8_t)(x >> 16); + p[2] = (uint8_t)(x >> 8); + p[3] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u32le__no_bounds_check(uint8_t* p, uint32_t x) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ + (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) + // This seems to perform better on gcc 10 (but not clang 9). Clang also + // defines "__GNUC__". + memcpy(p, &x, 4); +#else + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 24); +#endif +} + +static inline void // +wuffs_base__poke_u40be__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 32); + p[1] = (uint8_t)(x >> 24); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 8); + p[4] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u40le__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 24); + p[4] = (uint8_t)(x >> 32); +} + +static inline void // +wuffs_base__poke_u48be__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 40); + p[1] = (uint8_t)(x >> 32); + p[2] = (uint8_t)(x >> 24); + p[3] = (uint8_t)(x >> 16); + p[4] = (uint8_t)(x >> 8); + p[5] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u48le__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 24); + p[4] = (uint8_t)(x >> 32); + p[5] = (uint8_t)(x >> 40); +} + +static inline void // +wuffs_base__poke_u56be__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 48); + p[1] = (uint8_t)(x >> 40); + p[2] = (uint8_t)(x >> 32); + p[3] = (uint8_t)(x >> 24); + p[4] = (uint8_t)(x >> 16); + p[5] = (uint8_t)(x >> 8); + p[6] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u56le__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 24); + p[4] = (uint8_t)(x >> 32); + p[5] = (uint8_t)(x >> 40); + p[6] = (uint8_t)(x >> 48); +} + +static inline void // +wuffs_base__poke_u64be__no_bounds_check(uint8_t* p, uint64_t x) { + p[0] = (uint8_t)(x >> 56); + p[1] = (uint8_t)(x >> 48); + p[2] = (uint8_t)(x >> 40); + p[3] = (uint8_t)(x >> 32); + p[4] = (uint8_t)(x >> 24); + p[5] = (uint8_t)(x >> 16); + p[6] = (uint8_t)(x >> 8); + p[7] = (uint8_t)(x >> 0); +} + +static inline void // +wuffs_base__poke_u64le__no_bounds_check(uint8_t* p, uint64_t x) { +#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ + (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) + // This seems to perform better on gcc 10 (but not clang 9). Clang also + // defines "__GNUC__". + memcpy(p, &x, 8); +#else + p[0] = (uint8_t)(x >> 0); + p[1] = (uint8_t)(x >> 8); + p[2] = (uint8_t)(x >> 16); + p[3] = (uint8_t)(x >> 24); + p[4] = (uint8_t)(x >> 32); + p[5] = (uint8_t)(x >> 40); + p[6] = (uint8_t)(x >> 48); + p[7] = (uint8_t)(x >> 56); +#endif +} + +// ---------------- Slices and Tables + +// WUFFS_BASE__SLICE is a 1-dimensional buffer. +// +// len measures a number of elements, not necessarily a size in bytes. +// +// A value with all fields NULL or zero is a valid, empty slice. +#define WUFFS_BASE__SLICE(T) \ + struct { \ + T* ptr; \ + size_t len; \ + } + +// WUFFS_BASE__TABLE is a 2-dimensional buffer. +// +// width, height and stride measure a number of elements, not necessarily a +// size in bytes. +// +// A value with all fields NULL or zero is a valid, empty table. +#define WUFFS_BASE__TABLE(T) \ + struct { \ + T* ptr; \ + size_t width; \ + size_t height; \ + size_t stride; \ + } + +typedef WUFFS_BASE__SLICE(uint8_t) wuffs_base__slice_u8; +typedef WUFFS_BASE__SLICE(uint16_t) wuffs_base__slice_u16; +typedef WUFFS_BASE__SLICE(uint32_t) wuffs_base__slice_u32; +typedef WUFFS_BASE__SLICE(uint64_t) wuffs_base__slice_u64; + +typedef WUFFS_BASE__TABLE(uint8_t) wuffs_base__table_u8; +typedef WUFFS_BASE__TABLE(uint16_t) wuffs_base__table_u16; +typedef WUFFS_BASE__TABLE(uint32_t) wuffs_base__table_u32; +typedef WUFFS_BASE__TABLE(uint64_t) wuffs_base__table_u64; + +static inline wuffs_base__slice_u8 // +wuffs_base__make_slice_u8(uint8_t* ptr, size_t len) { + wuffs_base__slice_u8 ret; + ret.ptr = ptr; + ret.len = len; + return ret; +} + +static inline wuffs_base__slice_u16 // +wuffs_base__make_slice_u16(uint16_t* ptr, size_t len) { + wuffs_base__slice_u16 ret; + ret.ptr = ptr; + ret.len = len; + return ret; +} + +static inline wuffs_base__slice_u32 // +wuffs_base__make_slice_u32(uint32_t* ptr, size_t len) { + wuffs_base__slice_u32 ret; + ret.ptr = ptr; + ret.len = len; + return ret; +} + +static inline wuffs_base__slice_u64 // +wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) { + wuffs_base__slice_u64 ret; + ret.ptr = ptr; + ret.len = len; + return ret; +} + +static inline wuffs_base__slice_u8 // +wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) { + wuffs_base__slice_u8 ret; + ret.ptr = ptr + i; + ret.len = (j >= i) ? (j - i) : 0; + return ret; +} + +static inline wuffs_base__slice_u16 // +wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) { + wuffs_base__slice_u16 ret; + ret.ptr = ptr + i; + ret.len = (j >= i) ? (j - i) : 0; + return ret; +} + +static inline wuffs_base__slice_u32 // +wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) { + wuffs_base__slice_u32 ret; + ret.ptr = ptr + i; + ret.len = (j >= i) ? (j - i) : 0; + return ret; +} + +static inline wuffs_base__slice_u64 // +wuffs_base__make_slice_u64_ij(uint64_t* ptr, size_t i, size_t j) { + wuffs_base__slice_u64 ret; + ret.ptr = ptr + i; + ret.len = (j >= i) ? (j - i) : 0; + return ret; +} + +static inline wuffs_base__slice_u8 // +wuffs_base__empty_slice_u8(void) { + wuffs_base__slice_u8 ret; + ret.ptr = NULL; + ret.len = 0; + return ret; +} + +static inline wuffs_base__slice_u16 // +wuffs_base__empty_slice_u16(void) { + wuffs_base__slice_u16 ret; + ret.ptr = NULL; + ret.len = 0; + return ret; +} + +static inline wuffs_base__slice_u32 // +wuffs_base__empty_slice_u32(void) { + wuffs_base__slice_u32 ret; + ret.ptr = NULL; + ret.len = 0; + return ret; +} + +static inline wuffs_base__slice_u64 // +wuffs_base__empty_slice_u64(void) { + wuffs_base__slice_u64 ret; + ret.ptr = NULL; + ret.len = 0; + return ret; +} + +static inline wuffs_base__table_u8 // +wuffs_base__make_table_u8(uint8_t* ptr, + size_t width, + size_t height, + size_t stride) { + wuffs_base__table_u8 ret; + ret.ptr = ptr; + ret.width = width; + ret.height = height; + ret.stride = stride; + return ret; +} + +static inline wuffs_base__table_u16 // +wuffs_base__make_table_u16(uint16_t* ptr, + size_t width, + size_t height, + size_t stride) { + wuffs_base__table_u16 ret; + ret.ptr = ptr; + ret.width = width; + ret.height = height; + ret.stride = stride; + return ret; +} + +static inline wuffs_base__table_u32 // +wuffs_base__make_table_u32(uint32_t* ptr, + size_t width, + size_t height, + size_t stride) { + wuffs_base__table_u32 ret; + ret.ptr = ptr; + ret.width = width; + ret.height = height; + ret.stride = stride; + return ret; +} + +static inline wuffs_base__table_u64 // +wuffs_base__make_table_u64(uint64_t* ptr, + size_t width, + size_t height, + size_t stride) { + wuffs_base__table_u64 ret; + ret.ptr = ptr; + ret.width = width; + ret.height = height; + ret.stride = stride; + return ret; +} + +static inline wuffs_base__table_u8 // +wuffs_base__empty_table_u8(void) { + wuffs_base__table_u8 ret; + ret.ptr = NULL; + ret.width = 0; + ret.height = 0; + ret.stride = 0; + return ret; +} + +static inline wuffs_base__table_u16 // +wuffs_base__empty_table_u16(void) { + wuffs_base__table_u16 ret; + ret.ptr = NULL; + ret.width = 0; + ret.height = 0; + ret.stride = 0; + return ret; +} + +static inline wuffs_base__table_u32 // +wuffs_base__empty_table_u32(void) { + wuffs_base__table_u32 ret; + ret.ptr = NULL; + ret.width = 0; + ret.height = 0; + ret.stride = 0; + return ret; +} + +static inline wuffs_base__table_u64 // +wuffs_base__empty_table_u64(void) { + wuffs_base__table_u64 ret; + ret.ptr = NULL; + ret.width = 0; + ret.height = 0; + ret.stride = 0; + return ret; +} + +static inline bool // +wuffs_base__slice_u8__overlaps(wuffs_base__slice_u8 s, wuffs_base__slice_u8 t) { + return ((s.ptr <= t.ptr) && (t.ptr < (s.ptr + s.len))) || + ((t.ptr <= s.ptr) && (s.ptr < (t.ptr + t.len))); +} + +// wuffs_base__slice_u8__subslice_i returns s[i:]. +// +// It returns an empty slice if i is out of bounds. +static inline wuffs_base__slice_u8 // +wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) { + if ((i <= SIZE_MAX) && (i <= s.len)) { + return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i))); + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +// wuffs_base__slice_u8__subslice_j returns s[:j]. +// +// It returns an empty slice if j is out of bounds. +static inline wuffs_base__slice_u8 // +wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) { + if ((j <= SIZE_MAX) && (j <= s.len)) { + return wuffs_base__make_slice_u8(s.ptr, ((size_t)j)); + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +// wuffs_base__slice_u8__subslice_ij returns s[i:j]. +// +// It returns an empty slice if i or j is out of bounds. +static inline wuffs_base__slice_u8 // +wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s, + uint64_t i, + uint64_t j) { + if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) { + return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i))); + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +// wuffs_base__table_u8__subtable_ij returns t[ix:jx, iy:jy]. +// +// It returns an empty table if i or j is out of bounds. +static inline wuffs_base__table_u8 // +wuffs_base__table_u8__subtable_ij(wuffs_base__table_u8 t, + uint64_t ix, + uint64_t iy, + uint64_t jx, + uint64_t jy) { + if ((ix <= jx) && (jx <= SIZE_MAX) && (jx <= t.width) && // + (iy <= jy) && (jy <= SIZE_MAX) && (jy <= t.height)) { + return wuffs_base__make_table_u8(t.ptr + ix + (iy * t.stride), // + ((size_t)(jx - ix)), // + ((size_t)(jy - iy)), // + t.stride); // + } + return wuffs_base__make_table_u8(NULL, 0, 0, 0); +} + +// wuffs_base__table__flattened_length returns the number of elements covered +// by the 1-dimensional span that backs a 2-dimensional table. This counts the +// elements inside the table and, when width != stride, the elements outside +// the table but between its rows. +// +// For example, consider a width 10, height 4, stride 10 table. Mark its first +// and last (inclusive) elements with 'a' and 'z'. This function returns 40. +// +// a123456789 +// 0123456789 +// 0123456789 +// 012345678z +// +// Now consider the sub-table of that from (2, 1) inclusive to (8, 4) exclusive. +// +// a123456789 +// 01iiiiiioo +// ooiiiiiioo +// ooiiiiii8z +// +// This function (called with width 6, height 3, stride 10) returns 26: 18 'i' +// inside elements plus 8 'o' outside elements. Note that 26 is less than a +// naive (height * stride = 30) computation. Indeed, advancing 29 elements from +// the first 'i' would venture past 'z', out of bounds of the original table. +// +// It does not check for overflow, but if the arguments come from a table that +// exists in memory and each element occupies a positive number of bytes then +// the result should be bounded by the amount of allocatable memory (which +// shouldn't overflow SIZE_MAX). +static inline size_t // +wuffs_base__table__flattened_length(size_t width, + size_t height, + size_t stride) { + if (height == 0) { + return 0; + } + return ((height - 1) * stride) + width; +} + +// ---------------- Magic Numbers + +// wuffs_base__magic_number_guess_fourcc guesses the file format of some data, +// given its starting bytes (the prefix_data argument) and whether or not there +// may be further bytes (the prefix_closed argument; true means that +// prefix_data is the entire data). +// +// It returns a positive FourCC value on success. +// +// It returns zero if nothing matches its hard-coded list of 'magic numbers'. +// +// It returns a negative value if prefix_closed is false and a longer prefix is +// required for a conclusive result. For example, a single 'B' byte (without +// further data) is not enough to discriminate the BMP and BPG image file +// formats. Similarly, a single '\xFF' byte might be the start of JPEG data or +// it might be the start of some other binary data. +// +// It does not do a full validity check. Like any guess made from a short +// prefix of the data, it may return false positives. Data that starts with 99 +// bytes of valid JPEG followed by corruption or truncation is an invalid JPEG +// image overall, but this function will still return WUFFS_BASE__FOURCC__JPEG. +// +// Another source of false positives is that some 'magic numbers' are valid +// ASCII data. A file starting with "GIF87a and GIF89a are the two versions of +// GIF" will match GIF's 'magic number' even if it's plain text, not an image. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__MAGIC sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC int32_t // +wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data, + bool prefix_closed); + +// ---------------- Ranges and Rects + +// See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md + +typedef struct wuffs_base__range_ii_u32__struct { + uint32_t min_incl; + uint32_t max_incl; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__range_ii_u32__struct s) const; + inline wuffs_base__range_ii_u32__struct intersect( + wuffs_base__range_ii_u32__struct s) const; + inline wuffs_base__range_ii_u32__struct unite( + wuffs_base__range_ii_u32__struct s) const; + inline bool contains(uint32_t x) const; + inline bool contains_range(wuffs_base__range_ii_u32__struct s) const; +#endif // __cplusplus + +} wuffs_base__range_ii_u32; + +static inline wuffs_base__range_ii_u32 // +wuffs_base__empty_range_ii_u32(void) { + wuffs_base__range_ii_u32 ret; + ret.min_incl = 0; + ret.max_incl = 0; + return ret; +} + +static inline wuffs_base__range_ii_u32 // +wuffs_base__make_range_ii_u32(uint32_t min_incl, uint32_t max_incl) { + wuffs_base__range_ii_u32 ret; + ret.min_incl = min_incl; + ret.max_incl = max_incl; + return ret; +} + +static inline bool // +wuffs_base__range_ii_u32__is_empty(const wuffs_base__range_ii_u32* r) { + return r->min_incl > r->max_incl; +} + +static inline bool // +wuffs_base__range_ii_u32__equals(const wuffs_base__range_ii_u32* r, + wuffs_base__range_ii_u32 s) { + return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || + (wuffs_base__range_ii_u32__is_empty(r) && + wuffs_base__range_ii_u32__is_empty(&s)); +} + +static inline wuffs_base__range_ii_u32 // +wuffs_base__range_ii_u32__intersect(const wuffs_base__range_ii_u32* r, + wuffs_base__range_ii_u32 s) { + wuffs_base__range_ii_u32 t; + t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); + t.max_incl = wuffs_base__u32__min(r->max_incl, s.max_incl); + return t; +} + +static inline wuffs_base__range_ii_u32 // +wuffs_base__range_ii_u32__unite(const wuffs_base__range_ii_u32* r, + wuffs_base__range_ii_u32 s) { + if (wuffs_base__range_ii_u32__is_empty(r)) { + return s; + } + if (wuffs_base__range_ii_u32__is_empty(&s)) { + return *r; + } + wuffs_base__range_ii_u32 t; + t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); + t.max_incl = wuffs_base__u32__max(r->max_incl, s.max_incl); + return t; +} + +static inline bool // +wuffs_base__range_ii_u32__contains(const wuffs_base__range_ii_u32* r, + uint32_t x) { + return (r->min_incl <= x) && (x <= r->max_incl); +} + +static inline bool // +wuffs_base__range_ii_u32__contains_range(const wuffs_base__range_ii_u32* r, + wuffs_base__range_ii_u32 s) { + return wuffs_base__range_ii_u32__equals( + &s, wuffs_base__range_ii_u32__intersect(r, s)); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__range_ii_u32::is_empty() const { + return wuffs_base__range_ii_u32__is_empty(this); +} + +inline bool // +wuffs_base__range_ii_u32::equals(wuffs_base__range_ii_u32 s) const { + return wuffs_base__range_ii_u32__equals(this, s); +} + +inline wuffs_base__range_ii_u32 // +wuffs_base__range_ii_u32::intersect(wuffs_base__range_ii_u32 s) const { + return wuffs_base__range_ii_u32__intersect(this, s); +} + +inline wuffs_base__range_ii_u32 // +wuffs_base__range_ii_u32::unite(wuffs_base__range_ii_u32 s) const { + return wuffs_base__range_ii_u32__unite(this, s); +} + +inline bool // +wuffs_base__range_ii_u32::contains(uint32_t x) const { + return wuffs_base__range_ii_u32__contains(this, x); +} + +inline bool // +wuffs_base__range_ii_u32::contains_range(wuffs_base__range_ii_u32 s) const { + return wuffs_base__range_ii_u32__contains_range(this, s); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__range_ie_u32__struct { + uint32_t min_incl; + uint32_t max_excl; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__range_ie_u32__struct s) const; + inline wuffs_base__range_ie_u32__struct intersect( + wuffs_base__range_ie_u32__struct s) const; + inline wuffs_base__range_ie_u32__struct unite( + wuffs_base__range_ie_u32__struct s) const; + inline bool contains(uint32_t x) const; + inline bool contains_range(wuffs_base__range_ie_u32__struct s) const; + inline uint32_t length() const; +#endif // __cplusplus + +} wuffs_base__range_ie_u32; + +static inline wuffs_base__range_ie_u32 // +wuffs_base__empty_range_ie_u32(void) { + wuffs_base__range_ie_u32 ret; + ret.min_incl = 0; + ret.max_excl = 0; + return ret; +} + +static inline wuffs_base__range_ie_u32 // +wuffs_base__make_range_ie_u32(uint32_t min_incl, uint32_t max_excl) { + wuffs_base__range_ie_u32 ret; + ret.min_incl = min_incl; + ret.max_excl = max_excl; + return ret; +} + +static inline bool // +wuffs_base__range_ie_u32__is_empty(const wuffs_base__range_ie_u32* r) { + return r->min_incl >= r->max_excl; +} + +static inline bool // +wuffs_base__range_ie_u32__equals(const wuffs_base__range_ie_u32* r, + wuffs_base__range_ie_u32 s) { + return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || + (wuffs_base__range_ie_u32__is_empty(r) && + wuffs_base__range_ie_u32__is_empty(&s)); +} + +static inline wuffs_base__range_ie_u32 // +wuffs_base__range_ie_u32__intersect(const wuffs_base__range_ie_u32* r, + wuffs_base__range_ie_u32 s) { + wuffs_base__range_ie_u32 t; + t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); + t.max_excl = wuffs_base__u32__min(r->max_excl, s.max_excl); + return t; +} + +static inline wuffs_base__range_ie_u32 // +wuffs_base__range_ie_u32__unite(const wuffs_base__range_ie_u32* r, + wuffs_base__range_ie_u32 s) { + if (wuffs_base__range_ie_u32__is_empty(r)) { + return s; + } + if (wuffs_base__range_ie_u32__is_empty(&s)) { + return *r; + } + wuffs_base__range_ie_u32 t; + t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); + t.max_excl = wuffs_base__u32__max(r->max_excl, s.max_excl); + return t; +} + +static inline bool // +wuffs_base__range_ie_u32__contains(const wuffs_base__range_ie_u32* r, + uint32_t x) { + return (r->min_incl <= x) && (x < r->max_excl); +} + +static inline bool // +wuffs_base__range_ie_u32__contains_range(const wuffs_base__range_ie_u32* r, + wuffs_base__range_ie_u32 s) { + return wuffs_base__range_ie_u32__equals( + &s, wuffs_base__range_ie_u32__intersect(r, s)); +} + +static inline uint32_t // +wuffs_base__range_ie_u32__length(const wuffs_base__range_ie_u32* r) { + return wuffs_base__u32__sat_sub(r->max_excl, r->min_incl); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__range_ie_u32::is_empty() const { + return wuffs_base__range_ie_u32__is_empty(this); +} + +inline bool // +wuffs_base__range_ie_u32::equals(wuffs_base__range_ie_u32 s) const { + return wuffs_base__range_ie_u32__equals(this, s); +} + +inline wuffs_base__range_ie_u32 // +wuffs_base__range_ie_u32::intersect(wuffs_base__range_ie_u32 s) const { + return wuffs_base__range_ie_u32__intersect(this, s); +} + +inline wuffs_base__range_ie_u32 // +wuffs_base__range_ie_u32::unite(wuffs_base__range_ie_u32 s) const { + return wuffs_base__range_ie_u32__unite(this, s); +} + +inline bool // +wuffs_base__range_ie_u32::contains(uint32_t x) const { + return wuffs_base__range_ie_u32__contains(this, x); +} + +inline bool // +wuffs_base__range_ie_u32::contains_range(wuffs_base__range_ie_u32 s) const { + return wuffs_base__range_ie_u32__contains_range(this, s); +} + +inline uint32_t // +wuffs_base__range_ie_u32::length() const { + return wuffs_base__range_ie_u32__length(this); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__range_ii_u64__struct { + uint64_t min_incl; + uint64_t max_incl; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__range_ii_u64__struct s) const; + inline wuffs_base__range_ii_u64__struct intersect( + wuffs_base__range_ii_u64__struct s) const; + inline wuffs_base__range_ii_u64__struct unite( + wuffs_base__range_ii_u64__struct s) const; + inline bool contains(uint64_t x) const; + inline bool contains_range(wuffs_base__range_ii_u64__struct s) const; +#endif // __cplusplus + +} wuffs_base__range_ii_u64; + +static inline wuffs_base__range_ii_u64 // +wuffs_base__empty_range_ii_u64(void) { + wuffs_base__range_ii_u64 ret; + ret.min_incl = 0; + ret.max_incl = 0; + return ret; +} + +static inline wuffs_base__range_ii_u64 // +wuffs_base__make_range_ii_u64(uint64_t min_incl, uint64_t max_incl) { + wuffs_base__range_ii_u64 ret; + ret.min_incl = min_incl; + ret.max_incl = max_incl; + return ret; +} + +static inline bool // +wuffs_base__range_ii_u64__is_empty(const wuffs_base__range_ii_u64* r) { + return r->min_incl > r->max_incl; +} + +static inline bool // +wuffs_base__range_ii_u64__equals(const wuffs_base__range_ii_u64* r, + wuffs_base__range_ii_u64 s) { + return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || + (wuffs_base__range_ii_u64__is_empty(r) && + wuffs_base__range_ii_u64__is_empty(&s)); +} + +static inline wuffs_base__range_ii_u64 // +wuffs_base__range_ii_u64__intersect(const wuffs_base__range_ii_u64* r, + wuffs_base__range_ii_u64 s) { + wuffs_base__range_ii_u64 t; + t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); + t.max_incl = wuffs_base__u64__min(r->max_incl, s.max_incl); + return t; +} + +static inline wuffs_base__range_ii_u64 // +wuffs_base__range_ii_u64__unite(const wuffs_base__range_ii_u64* r, + wuffs_base__range_ii_u64 s) { + if (wuffs_base__range_ii_u64__is_empty(r)) { + return s; + } + if (wuffs_base__range_ii_u64__is_empty(&s)) { + return *r; + } + wuffs_base__range_ii_u64 t; + t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); + t.max_incl = wuffs_base__u64__max(r->max_incl, s.max_incl); + return t; +} + +static inline bool // +wuffs_base__range_ii_u64__contains(const wuffs_base__range_ii_u64* r, + uint64_t x) { + return (r->min_incl <= x) && (x <= r->max_incl); +} + +static inline bool // +wuffs_base__range_ii_u64__contains_range(const wuffs_base__range_ii_u64* r, + wuffs_base__range_ii_u64 s) { + return wuffs_base__range_ii_u64__equals( + &s, wuffs_base__range_ii_u64__intersect(r, s)); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__range_ii_u64::is_empty() const { + return wuffs_base__range_ii_u64__is_empty(this); +} + +inline bool // +wuffs_base__range_ii_u64::equals(wuffs_base__range_ii_u64 s) const { + return wuffs_base__range_ii_u64__equals(this, s); +} + +inline wuffs_base__range_ii_u64 // +wuffs_base__range_ii_u64::intersect(wuffs_base__range_ii_u64 s) const { + return wuffs_base__range_ii_u64__intersect(this, s); +} + +inline wuffs_base__range_ii_u64 // +wuffs_base__range_ii_u64::unite(wuffs_base__range_ii_u64 s) const { + return wuffs_base__range_ii_u64__unite(this, s); +} + +inline bool // +wuffs_base__range_ii_u64::contains(uint64_t x) const { + return wuffs_base__range_ii_u64__contains(this, x); +} + +inline bool // +wuffs_base__range_ii_u64::contains_range(wuffs_base__range_ii_u64 s) const { + return wuffs_base__range_ii_u64__contains_range(this, s); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__range_ie_u64__struct { + uint64_t min_incl; + uint64_t max_excl; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__range_ie_u64__struct s) const; + inline wuffs_base__range_ie_u64__struct intersect( + wuffs_base__range_ie_u64__struct s) const; + inline wuffs_base__range_ie_u64__struct unite( + wuffs_base__range_ie_u64__struct s) const; + inline bool contains(uint64_t x) const; + inline bool contains_range(wuffs_base__range_ie_u64__struct s) const; + inline uint64_t length() const; +#endif // __cplusplus + +} wuffs_base__range_ie_u64; + +static inline wuffs_base__range_ie_u64 // +wuffs_base__empty_range_ie_u64(void) { + wuffs_base__range_ie_u64 ret; + ret.min_incl = 0; + ret.max_excl = 0; + return ret; +} + +static inline wuffs_base__range_ie_u64 // +wuffs_base__make_range_ie_u64(uint64_t min_incl, uint64_t max_excl) { + wuffs_base__range_ie_u64 ret; + ret.min_incl = min_incl; + ret.max_excl = max_excl; + return ret; +} + +static inline bool // +wuffs_base__range_ie_u64__is_empty(const wuffs_base__range_ie_u64* r) { + return r->min_incl >= r->max_excl; +} + +static inline bool // +wuffs_base__range_ie_u64__equals(const wuffs_base__range_ie_u64* r, + wuffs_base__range_ie_u64 s) { + return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || + (wuffs_base__range_ie_u64__is_empty(r) && + wuffs_base__range_ie_u64__is_empty(&s)); +} + +static inline wuffs_base__range_ie_u64 // +wuffs_base__range_ie_u64__intersect(const wuffs_base__range_ie_u64* r, + wuffs_base__range_ie_u64 s) { + wuffs_base__range_ie_u64 t; + t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); + t.max_excl = wuffs_base__u64__min(r->max_excl, s.max_excl); + return t; +} + +static inline wuffs_base__range_ie_u64 // +wuffs_base__range_ie_u64__unite(const wuffs_base__range_ie_u64* r, + wuffs_base__range_ie_u64 s) { + if (wuffs_base__range_ie_u64__is_empty(r)) { + return s; + } + if (wuffs_base__range_ie_u64__is_empty(&s)) { + return *r; + } + wuffs_base__range_ie_u64 t; + t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); + t.max_excl = wuffs_base__u64__max(r->max_excl, s.max_excl); + return t; +} + +static inline bool // +wuffs_base__range_ie_u64__contains(const wuffs_base__range_ie_u64* r, + uint64_t x) { + return (r->min_incl <= x) && (x < r->max_excl); +} + +static inline bool // +wuffs_base__range_ie_u64__contains_range(const wuffs_base__range_ie_u64* r, + wuffs_base__range_ie_u64 s) { + return wuffs_base__range_ie_u64__equals( + &s, wuffs_base__range_ie_u64__intersect(r, s)); +} + +static inline uint64_t // +wuffs_base__range_ie_u64__length(const wuffs_base__range_ie_u64* r) { + return wuffs_base__u64__sat_sub(r->max_excl, r->min_incl); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__range_ie_u64::is_empty() const { + return wuffs_base__range_ie_u64__is_empty(this); +} + +inline bool // +wuffs_base__range_ie_u64::equals(wuffs_base__range_ie_u64 s) const { + return wuffs_base__range_ie_u64__equals(this, s); +} + +inline wuffs_base__range_ie_u64 // +wuffs_base__range_ie_u64::intersect(wuffs_base__range_ie_u64 s) const { + return wuffs_base__range_ie_u64__intersect(this, s); +} + +inline wuffs_base__range_ie_u64 // +wuffs_base__range_ie_u64::unite(wuffs_base__range_ie_u64 s) const { + return wuffs_base__range_ie_u64__unite(this, s); +} + +inline bool // +wuffs_base__range_ie_u64::contains(uint64_t x) const { + return wuffs_base__range_ie_u64__contains(this, x); +} + +inline bool // +wuffs_base__range_ie_u64::contains_range(wuffs_base__range_ie_u64 s) const { + return wuffs_base__range_ie_u64__contains_range(this, s); +} + +inline uint64_t // +wuffs_base__range_ie_u64::length() const { + return wuffs_base__range_ie_u64__length(this); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__rect_ii_u32__struct { + uint32_t min_incl_x; + uint32_t min_incl_y; + uint32_t max_incl_x; + uint32_t max_incl_y; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__rect_ii_u32__struct s) const; + inline wuffs_base__rect_ii_u32__struct intersect( + wuffs_base__rect_ii_u32__struct s) const; + inline wuffs_base__rect_ii_u32__struct unite( + wuffs_base__rect_ii_u32__struct s) const; + inline bool contains(uint32_t x, uint32_t y) const; + inline bool contains_rect(wuffs_base__rect_ii_u32__struct s) const; +#endif // __cplusplus + +} wuffs_base__rect_ii_u32; + +static inline wuffs_base__rect_ii_u32 // +wuffs_base__empty_rect_ii_u32(void) { + wuffs_base__rect_ii_u32 ret; + ret.min_incl_x = 0; + ret.min_incl_y = 0; + ret.max_incl_x = 0; + ret.max_incl_y = 0; + return ret; +} + +static inline wuffs_base__rect_ii_u32 // +wuffs_base__make_rect_ii_u32(uint32_t min_incl_x, + uint32_t min_incl_y, + uint32_t max_incl_x, + uint32_t max_incl_y) { + wuffs_base__rect_ii_u32 ret; + ret.min_incl_x = min_incl_x; + ret.min_incl_y = min_incl_y; + ret.max_incl_x = max_incl_x; + ret.max_incl_y = max_incl_y; + return ret; +} + +static inline bool // +wuffs_base__rect_ii_u32__is_empty(const wuffs_base__rect_ii_u32* r) { + return (r->min_incl_x > r->max_incl_x) || (r->min_incl_y > r->max_incl_y); +} + +static inline bool // +wuffs_base__rect_ii_u32__equals(const wuffs_base__rect_ii_u32* r, + wuffs_base__rect_ii_u32 s) { + return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && + r->max_incl_x == s.max_incl_x && r->max_incl_y == s.max_incl_y) || + (wuffs_base__rect_ii_u32__is_empty(r) && + wuffs_base__rect_ii_u32__is_empty(&s)); +} + +static inline wuffs_base__rect_ii_u32 // +wuffs_base__rect_ii_u32__intersect(const wuffs_base__rect_ii_u32* r, + wuffs_base__rect_ii_u32 s) { + wuffs_base__rect_ii_u32 t; + t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); + t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); + t.max_incl_x = wuffs_base__u32__min(r->max_incl_x, s.max_incl_x); + t.max_incl_y = wuffs_base__u32__min(r->max_incl_y, s.max_incl_y); + return t; +} + +static inline wuffs_base__rect_ii_u32 // +wuffs_base__rect_ii_u32__unite(const wuffs_base__rect_ii_u32* r, + wuffs_base__rect_ii_u32 s) { + if (wuffs_base__rect_ii_u32__is_empty(r)) { + return s; + } + if (wuffs_base__rect_ii_u32__is_empty(&s)) { + return *r; + } + wuffs_base__rect_ii_u32 t; + t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); + t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); + t.max_incl_x = wuffs_base__u32__max(r->max_incl_x, s.max_incl_x); + t.max_incl_y = wuffs_base__u32__max(r->max_incl_y, s.max_incl_y); + return t; +} + +static inline bool // +wuffs_base__rect_ii_u32__contains(const wuffs_base__rect_ii_u32* r, + uint32_t x, + uint32_t y) { + return (r->min_incl_x <= x) && (x <= r->max_incl_x) && (r->min_incl_y <= y) && + (y <= r->max_incl_y); +} + +static inline bool // +wuffs_base__rect_ii_u32__contains_rect(const wuffs_base__rect_ii_u32* r, + wuffs_base__rect_ii_u32 s) { + return wuffs_base__rect_ii_u32__equals( + &s, wuffs_base__rect_ii_u32__intersect(r, s)); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__rect_ii_u32::is_empty() const { + return wuffs_base__rect_ii_u32__is_empty(this); +} + +inline bool // +wuffs_base__rect_ii_u32::equals(wuffs_base__rect_ii_u32 s) const { + return wuffs_base__rect_ii_u32__equals(this, s); +} + +inline wuffs_base__rect_ii_u32 // +wuffs_base__rect_ii_u32::intersect(wuffs_base__rect_ii_u32 s) const { + return wuffs_base__rect_ii_u32__intersect(this, s); +} + +inline wuffs_base__rect_ii_u32 // +wuffs_base__rect_ii_u32::unite(wuffs_base__rect_ii_u32 s) const { + return wuffs_base__rect_ii_u32__unite(this, s); +} + +inline bool // +wuffs_base__rect_ii_u32::contains(uint32_t x, uint32_t y) const { + return wuffs_base__rect_ii_u32__contains(this, x, y); +} + +inline bool // +wuffs_base__rect_ii_u32::contains_rect(wuffs_base__rect_ii_u32 s) const { + return wuffs_base__rect_ii_u32__contains_rect(this, s); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__rect_ie_u32__struct { + uint32_t min_incl_x; + uint32_t min_incl_y; + uint32_t max_excl_x; + uint32_t max_excl_y; + +#ifdef __cplusplus + inline bool is_empty() const; + inline bool equals(wuffs_base__rect_ie_u32__struct s) const; + inline wuffs_base__rect_ie_u32__struct intersect( + wuffs_base__rect_ie_u32__struct s) const; + inline wuffs_base__rect_ie_u32__struct unite( + wuffs_base__rect_ie_u32__struct s) const; + inline bool contains(uint32_t x, uint32_t y) const; + inline bool contains_rect(wuffs_base__rect_ie_u32__struct s) const; + inline uint32_t width() const; + inline uint32_t height() const; +#endif // __cplusplus + +} wuffs_base__rect_ie_u32; + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__empty_rect_ie_u32(void) { + wuffs_base__rect_ie_u32 ret; + ret.min_incl_x = 0; + ret.min_incl_y = 0; + ret.max_excl_x = 0; + ret.max_excl_y = 0; + return ret; +} + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__make_rect_ie_u32(uint32_t min_incl_x, + uint32_t min_incl_y, + uint32_t max_excl_x, + uint32_t max_excl_y) { + wuffs_base__rect_ie_u32 ret; + ret.min_incl_x = min_incl_x; + ret.min_incl_y = min_incl_y; + ret.max_excl_x = max_excl_x; + ret.max_excl_y = max_excl_y; + return ret; +} + +static inline bool // +wuffs_base__rect_ie_u32__is_empty(const wuffs_base__rect_ie_u32* r) { + return (r->min_incl_x >= r->max_excl_x) || (r->min_incl_y >= r->max_excl_y); +} + +static inline bool // +wuffs_base__rect_ie_u32__equals(const wuffs_base__rect_ie_u32* r, + wuffs_base__rect_ie_u32 s) { + return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && + r->max_excl_x == s.max_excl_x && r->max_excl_y == s.max_excl_y) || + (wuffs_base__rect_ie_u32__is_empty(r) && + wuffs_base__rect_ie_u32__is_empty(&s)); +} + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__rect_ie_u32__intersect(const wuffs_base__rect_ie_u32* r, + wuffs_base__rect_ie_u32 s) { + wuffs_base__rect_ie_u32 t; + t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); + t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); + t.max_excl_x = wuffs_base__u32__min(r->max_excl_x, s.max_excl_x); + t.max_excl_y = wuffs_base__u32__min(r->max_excl_y, s.max_excl_y); + return t; +} + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__rect_ie_u32__unite(const wuffs_base__rect_ie_u32* r, + wuffs_base__rect_ie_u32 s) { + if (wuffs_base__rect_ie_u32__is_empty(r)) { + return s; + } + if (wuffs_base__rect_ie_u32__is_empty(&s)) { + return *r; + } + wuffs_base__rect_ie_u32 t; + t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); + t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); + t.max_excl_x = wuffs_base__u32__max(r->max_excl_x, s.max_excl_x); + t.max_excl_y = wuffs_base__u32__max(r->max_excl_y, s.max_excl_y); + return t; +} + +static inline bool // +wuffs_base__rect_ie_u32__contains(const wuffs_base__rect_ie_u32* r, + uint32_t x, + uint32_t y) { + return (r->min_incl_x <= x) && (x < r->max_excl_x) && (r->min_incl_y <= y) && + (y < r->max_excl_y); +} + +static inline bool // +wuffs_base__rect_ie_u32__contains_rect(const wuffs_base__rect_ie_u32* r, + wuffs_base__rect_ie_u32 s) { + return wuffs_base__rect_ie_u32__equals( + &s, wuffs_base__rect_ie_u32__intersect(r, s)); +} + +static inline uint32_t // +wuffs_base__rect_ie_u32__width(const wuffs_base__rect_ie_u32* r) { + return wuffs_base__u32__sat_sub(r->max_excl_x, r->min_incl_x); +} + +static inline uint32_t // +wuffs_base__rect_ie_u32__height(const wuffs_base__rect_ie_u32* r) { + return wuffs_base__u32__sat_sub(r->max_excl_y, r->min_incl_y); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__rect_ie_u32::is_empty() const { + return wuffs_base__rect_ie_u32__is_empty(this); +} + +inline bool // +wuffs_base__rect_ie_u32::equals(wuffs_base__rect_ie_u32 s) const { + return wuffs_base__rect_ie_u32__equals(this, s); +} + +inline wuffs_base__rect_ie_u32 // +wuffs_base__rect_ie_u32::intersect(wuffs_base__rect_ie_u32 s) const { + return wuffs_base__rect_ie_u32__intersect(this, s); +} + +inline wuffs_base__rect_ie_u32 // +wuffs_base__rect_ie_u32::unite(wuffs_base__rect_ie_u32 s) const { + return wuffs_base__rect_ie_u32__unite(this, s); +} + +inline bool // +wuffs_base__rect_ie_u32::contains(uint32_t x, uint32_t y) const { + return wuffs_base__rect_ie_u32__contains(this, x, y); +} + +inline bool // +wuffs_base__rect_ie_u32::contains_rect(wuffs_base__rect_ie_u32 s) const { + return wuffs_base__rect_ie_u32__contains_rect(this, s); +} + +inline uint32_t // +wuffs_base__rect_ie_u32::width() const { + return wuffs_base__rect_ie_u32__width(this); +} + +inline uint32_t // +wuffs_base__rect_ie_u32::height() const { + return wuffs_base__rect_ie_u32__height(this); +} + +#endif // __cplusplus + +// ---------------- More Information + +// wuffs_base__more_information holds additional fields, typically when a Wuffs +// method returns a [note status](/doc/note/statuses.md). +// +// The flavor field follows the base38 namespace +// convention](/doc/note/base38-and-fourcc.md). The other fields' semantics +// depends on the flavor. +typedef struct wuffs_base__more_information__struct { + uint32_t flavor; + uint32_t w; + uint64_t x; + uint64_t y; + uint64_t z; + +#ifdef __cplusplus + inline void set(uint32_t flavor_arg, + uint32_t w_arg, + uint64_t x_arg, + uint64_t y_arg, + uint64_t z_arg); + inline uint32_t io_redirect__fourcc() const; + inline wuffs_base__range_ie_u64 io_redirect__range() const; + inline uint64_t io_seek__position() const; + inline uint32_t metadata__fourcc() const; + inline wuffs_base__range_ie_u64 metadata_raw_passthrough__range() const; + inline int32_t metadata_parsed__chrm(uint32_t component) const; + inline uint32_t metadata_parsed__gama() const; + inline uint32_t metadata_parsed__srgb() const; +#endif // __cplusplus + +} wuffs_base__more_information; + +#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT 1 +#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_SEEK 2 +#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH 3 +#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM 4 +#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED 5 + +static inline wuffs_base__more_information // +wuffs_base__empty_more_information(void) { + wuffs_base__more_information ret; + ret.flavor = 0; + ret.w = 0; + ret.x = 0; + ret.y = 0; + ret.z = 0; + return ret; +} + +static inline void // +wuffs_base__more_information__set(wuffs_base__more_information* m, + uint32_t flavor, + uint32_t w, + uint64_t x, + uint64_t y, + uint64_t z) { + if (!m) { + return; + } + m->flavor = flavor; + m->w = w; + m->x = x; + m->y = y; + m->z = z; +} + +static inline uint32_t // +wuffs_base__more_information__io_redirect__fourcc( + const wuffs_base__more_information* m) { + return m->w; +} + +static inline wuffs_base__range_ie_u64 // +wuffs_base__more_information__io_redirect__range( + const wuffs_base__more_information* m) { + wuffs_base__range_ie_u64 ret; + ret.min_incl = m->y; + ret.max_excl = m->z; + return ret; +} + +static inline uint64_t // +wuffs_base__more_information__io_seek__position( + const wuffs_base__more_information* m) { + return m->x; +} + +static inline uint32_t // +wuffs_base__more_information__metadata__fourcc( + const wuffs_base__more_information* m) { + return m->w; +} + +static inline wuffs_base__range_ie_u64 // +wuffs_base__more_information__metadata_raw_passthrough__range( + const wuffs_base__more_information* m) { + wuffs_base__range_ie_u64 ret; + ret.min_incl = m->y; + ret.max_excl = m->z; + return ret; +} + +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_X 0 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_Y 1 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_X 2 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_Y 3 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_X 4 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_Y 5 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_X 6 +#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_Y 7 + +// wuffs_base__more_information__metadata_parsed__chrm returns chromaticity +// values (scaled by 100000) like the PNG "cHRM" chunk. For example, the sRGB +// color space corresponds to: +// - ETC__CHRM__WHITE_X 31270 +// - ETC__CHRM__WHITE_Y 32900 +// - ETC__CHRM__RED_X 64000 +// - ETC__CHRM__RED_Y 33000 +// - ETC__CHRM__GREEN_X 30000 +// - ETC__CHRM__GREEN_Y 60000 +// - ETC__CHRM__BLUE_X 15000 +// - ETC__CHRM__BLUE_Y 6000 +// +// See +// https://ciechanow.ski/color-spaces/#chromaticity-and-white-point-coordinates +static inline int32_t // +wuffs_base__more_information__metadata_parsed__chrm( + const wuffs_base__more_information* m, + uint32_t component) { + // After the flavor and the w field (holding a FourCC), a + // wuffs_base__more_information holds 24 bytes of data in three uint64_t + // typed fields (x, y and z). We pack the eight chromaticity values (wx, wy, + // rx, ..., by), basically int24_t values, into 24 bytes like this: + // - LSB MSB + // - x: wx wx wx wy wy wy rx rx + // - y: rx ry ry ry gx gx gx gy + // - z: gy gy bx bx bx by by by + uint32_t u = 0; + switch (component & 7) { + case 0: + u = ((uint32_t)(m->x >> 0)); + break; + case 1: + u = ((uint32_t)(m->x >> 24)); + break; + case 2: + u = ((uint32_t)((m->x >> 48) | (m->y << 16))); + break; + case 3: + u = ((uint32_t)(m->y >> 8)); + break; + case 4: + u = ((uint32_t)(m->y >> 32)); + break; + case 5: + u = ((uint32_t)((m->y >> 56) | (m->z << 8))); + break; + case 6: + u = ((uint32_t)(m->z >> 16)); + break; + case 7: + u = ((uint32_t)(m->z >> 40)); + break; + } + // The left-right shifts sign-extend from 24-bit to 32-bit integers. + return ((int32_t)(u << 8)) >> 8; +} + +// wuffs_base__more_information__metadata_parsed__gama returns inverse gamma +// correction values (scaled by 100000) like the PNG "gAMA" chunk. For example, +// for gamma = 2.2, this returns 45455 (approximating 100000 / 2.2). +static inline uint32_t // +wuffs_base__more_information__metadata_parsed__gama( + const wuffs_base__more_information* m) { + return ((uint32_t)(m->x)); +} + +#define WUFFS_BASE__SRGB_RENDERING_INTENT__PERCEPTUAL 0 +#define WUFFS_BASE__SRGB_RENDERING_INTENT__RELATIVE_COLORIMETRIC 1 +#define WUFFS_BASE__SRGB_RENDERING_INTENT__SATURATION 2 +#define WUFFS_BASE__SRGB_RENDERING_INTENT__ABSOLUTE_COLORIMETRIC 3 + +// wuffs_base__more_information__metadata_parsed__srgb returns the sRGB +// rendering intent like the PNG "sRGB" chunk. +static inline uint32_t // +wuffs_base__more_information__metadata_parsed__srgb( + const wuffs_base__more_information* m) { + return m->x & 3; +} + +#ifdef __cplusplus + +inline void // +wuffs_base__more_information::set(uint32_t flavor_arg, + uint32_t w_arg, + uint64_t x_arg, + uint64_t y_arg, + uint64_t z_arg) { + wuffs_base__more_information__set(this, flavor_arg, w_arg, x_arg, y_arg, + z_arg); +} + +inline uint32_t // +wuffs_base__more_information::io_redirect__fourcc() const { + return wuffs_base__more_information__io_redirect__fourcc(this); +} + +inline wuffs_base__range_ie_u64 // +wuffs_base__more_information::io_redirect__range() const { + return wuffs_base__more_information__io_redirect__range(this); +} + +inline uint64_t // +wuffs_base__more_information::io_seek__position() const { + return wuffs_base__more_information__io_seek__position(this); +} + +inline uint32_t // +wuffs_base__more_information::metadata__fourcc() const { + return wuffs_base__more_information__metadata__fourcc(this); +} + +inline wuffs_base__range_ie_u64 // +wuffs_base__more_information::metadata_raw_passthrough__range() const { + return wuffs_base__more_information__metadata_raw_passthrough__range(this); +} + +inline int32_t // +wuffs_base__more_information::metadata_parsed__chrm(uint32_t component) const { + return wuffs_base__more_information__metadata_parsed__chrm(this, component); +} + +inline uint32_t // +wuffs_base__more_information::metadata_parsed__gama() const { + return wuffs_base__more_information__metadata_parsed__gama(this); +} + +inline uint32_t // +wuffs_base__more_information::metadata_parsed__srgb() const { + return wuffs_base__more_information__metadata_parsed__srgb(this); +} + +#endif // __cplusplus + +// ---------------- I/O +// +// See (/doc/note/io-input-output.md). + +// wuffs_base__io_buffer_meta is the metadata for a wuffs_base__io_buffer's +// data. +typedef struct wuffs_base__io_buffer_meta__struct { + size_t wi; // Write index. Invariant: wi <= len. + size_t ri; // Read index. Invariant: ri <= wi. + uint64_t pos; // Buffer position (relative to the start of stream). + bool closed; // No further writes are expected. +} wuffs_base__io_buffer_meta; + +// wuffs_base__io_buffer is a 1-dimensional buffer (a pointer and length) plus +// additional metadata. +// +// A value with all fields zero is a valid, empty buffer. +typedef struct wuffs_base__io_buffer__struct { + wuffs_base__slice_u8 data; + wuffs_base__io_buffer_meta meta; + +#ifdef __cplusplus + inline bool is_valid() const; + inline void compact(); + inline void compact_retaining(uint64_t history_retain_length); + inline size_t reader_length() const; + inline uint8_t* reader_pointer() const; + inline uint64_t reader_position() const; + inline wuffs_base__slice_u8 reader_slice() const; + inline size_t writer_length() const; + inline uint8_t* writer_pointer() const; + inline uint64_t writer_position() const; + inline wuffs_base__slice_u8 writer_slice() const; +#endif // __cplusplus + +} wuffs_base__io_buffer; + +static inline wuffs_base__io_buffer // +wuffs_base__make_io_buffer(wuffs_base__slice_u8 data, + wuffs_base__io_buffer_meta meta) { + wuffs_base__io_buffer ret; + ret.data = data; + ret.meta = meta; + return ret; +} + +static inline wuffs_base__io_buffer_meta // +wuffs_base__make_io_buffer_meta(size_t wi, + size_t ri, + uint64_t pos, + bool closed) { + wuffs_base__io_buffer_meta ret; + ret.wi = wi; + ret.ri = ri; + ret.pos = pos; + ret.closed = closed; + return ret; +} + +static inline wuffs_base__io_buffer // +wuffs_base__ptr_u8__reader(uint8_t* ptr, size_t len, bool closed) { + wuffs_base__io_buffer ret; + ret.data.ptr = ptr; + ret.data.len = len; + ret.meta.wi = len; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = closed; + return ret; +} + +static inline wuffs_base__io_buffer // +wuffs_base__ptr_u8__writer(uint8_t* ptr, size_t len) { + wuffs_base__io_buffer ret; + ret.data.ptr = ptr; + ret.data.len = len; + ret.meta.wi = 0; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = false; + return ret; +} + +static inline wuffs_base__io_buffer // +wuffs_base__slice_u8__reader(wuffs_base__slice_u8 s, bool closed) { + wuffs_base__io_buffer ret; + ret.data.ptr = s.ptr; + ret.data.len = s.len; + ret.meta.wi = s.len; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = closed; + return ret; +} + +static inline wuffs_base__io_buffer // +wuffs_base__slice_u8__writer(wuffs_base__slice_u8 s) { + wuffs_base__io_buffer ret; + ret.data.ptr = s.ptr; + ret.data.len = s.len; + ret.meta.wi = 0; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = false; + return ret; +} + +static inline wuffs_base__io_buffer // +wuffs_base__empty_io_buffer(void) { + wuffs_base__io_buffer ret; + ret.data.ptr = NULL; + ret.data.len = 0; + ret.meta.wi = 0; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = false; + return ret; +} + +static inline wuffs_base__io_buffer_meta // +wuffs_base__empty_io_buffer_meta(void) { + wuffs_base__io_buffer_meta ret; + ret.wi = 0; + ret.ri = 0; + ret.pos = 0; + ret.closed = false; + return ret; +} + +static inline bool // +wuffs_base__io_buffer__is_valid(const wuffs_base__io_buffer* buf) { + if (buf) { + if (buf->data.ptr) { + return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len); + } else { + return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0); + } + } + return false; +} + +// wuffs_base__io_buffer__compact moves any written but unread bytes to the +// start of the buffer. +static inline void // +wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) { + if (!buf || (buf->meta.ri == 0)) { + return; + } + buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri); + size_t new_wi = buf->meta.wi - buf->meta.ri; + if (new_wi != 0) { + memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, new_wi); + } + buf->meta.wi = new_wi; + buf->meta.ri = 0; +} + +// wuffs_base__io_buffer__compact_retaining moves any written but unread bytes +// closer to the start of the buffer. It retains H bytes of history (the most +// recently read bytes), where H is min(buf->meta.ri, history_retain_length). +// A postcondition is that buf->meta.ri == H. +// +// wuffs_base__io_buffer__compact_retaining(0) is equivalent to +// wuffs_base__io_buffer__compact(). +// +// For example, if buf started like this: +// +// +--- ri = 3 +// v +// abcdefgh?? len = 10, pos = 900 +// ^ +// +--- wi = 8 +// +// Then, depending on history_retain_length, the resultant buf would be: +// +// HRL = 0 defgh????? ri = 0 wi = 5 pos = 903 +// HRL = 1 cdefgh???? ri = 1 wi = 6 pos = 902 +// HRL = 2 bcdefgh??? ri = 2 wi = 7 pos = 901 +// HRL = 3 abcdefgh?? ri = 3 wi = 8 pos = 900 +// HRL = 4+ abcdefgh?? ri = 3 wi = 8 pos = 900 +static inline void // +wuffs_base__io_buffer__compact_retaining(wuffs_base__io_buffer* buf, + uint64_t history_retain_length) { + if (!buf || (buf->meta.ri == 0)) { + return; + } + size_t old_ri = buf->meta.ri; + size_t new_ri = (size_t)(wuffs_base__u64__min(old_ri, history_retain_length)); + size_t memmove_start = old_ri - new_ri; + buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, memmove_start); + size_t new_wi = buf->meta.wi - memmove_start; + if ((new_wi != 0) && (memmove_start != 0)) { + memmove(buf->data.ptr, buf->data.ptr + memmove_start, new_wi); + } + buf->meta.wi = new_wi; + buf->meta.ri = new_ri; +} + +static inline size_t // +wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) { + return buf ? buf->meta.wi - buf->meta.ri : 0; +} + +static inline uint8_t* // +wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) { + return buf ? (buf->data.ptr + buf->meta.ri) : NULL; +} + +static inline uint64_t // +wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) { + return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; +} + +static inline wuffs_base__slice_u8 // +wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) { + return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri, + buf->meta.wi - buf->meta.ri) + : wuffs_base__empty_slice_u8(); +} + +static inline size_t // +wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) { + return buf ? buf->data.len - buf->meta.wi : 0; +} + +static inline uint8_t* // +wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) { + return buf ? (buf->data.ptr + buf->meta.wi) : NULL; +} + +static inline uint64_t // +wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) { + return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; +} + +static inline wuffs_base__slice_u8 // +wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) { + return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi, + buf->data.len - buf->meta.wi) + : wuffs_base__empty_slice_u8(); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__io_buffer::is_valid() const { + return wuffs_base__io_buffer__is_valid(this); +} + +inline void // +wuffs_base__io_buffer::compact() { + wuffs_base__io_buffer__compact(this); +} + +inline void // +wuffs_base__io_buffer::compact_retaining(uint64_t history_retain_length) { + wuffs_base__io_buffer__compact_retaining(this, history_retain_length); +} + +inline size_t // +wuffs_base__io_buffer::reader_length() const { + return wuffs_base__io_buffer__reader_length(this); +} + +inline uint8_t* // +wuffs_base__io_buffer::reader_pointer() const { + return wuffs_base__io_buffer__reader_pointer(this); +} + +inline uint64_t // +wuffs_base__io_buffer::reader_position() const { + return wuffs_base__io_buffer__reader_position(this); +} + +inline wuffs_base__slice_u8 // +wuffs_base__io_buffer::reader_slice() const { + return wuffs_base__io_buffer__reader_slice(this); +} + +inline size_t // +wuffs_base__io_buffer::writer_length() const { + return wuffs_base__io_buffer__writer_length(this); +} + +inline uint8_t* // +wuffs_base__io_buffer::writer_pointer() const { + return wuffs_base__io_buffer__writer_pointer(this); +} + +inline uint64_t // +wuffs_base__io_buffer::writer_position() const { + return wuffs_base__io_buffer__writer_position(this); +} + +inline wuffs_base__slice_u8 // +wuffs_base__io_buffer::writer_slice() const { + return wuffs_base__io_buffer__writer_slice(this); +} + +#endif // __cplusplus + +// ---------------- Tokens + +// wuffs_base__token is an element of a byte stream's tokenization. +// +// See https://github.com/google/wuffs/blob/main/doc/note/tokens.md +typedef struct wuffs_base__token__struct { + uint64_t repr; + +#ifdef __cplusplus + inline int64_t value() const; + inline int64_t value_extension() const; + inline int64_t value_major() const; + inline int64_t value_base_category() const; + inline uint64_t value_minor() const; + inline uint64_t value_base_detail() const; + inline int64_t value_base_detail__sign_extended() const; + inline bool continued() const; + inline uint64_t length() const; +#endif // __cplusplus + +} wuffs_base__token; + +static inline wuffs_base__token // +wuffs_base__make_token(uint64_t repr) { + wuffs_base__token ret; + ret.repr = repr; + return ret; +} + +// -------- + +#define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF + +#define WUFFS_BASE__TOKEN__VALUE__SHIFT 17 +#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17 +#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42 +#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17 +#define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38 +#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17 +#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16 +#define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0 + +#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46 + +// -------- + +#define WUFFS_BASE__TOKEN__VBC__FILLER 0 +#define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1 +#define WUFFS_BASE__TOKEN__VBC__STRING 2 +#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3 +#define WUFFS_BASE__TOKEN__VBC__LITERAL 4 +#define WUFFS_BASE__TOKEN__VBC__NUMBER 5 +#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6 +#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7 + +// -------- + +#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001 +#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002 +#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004 + +// COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE. +#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006 + +// -------- + +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000 +#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000 + +// -------- + +// DEFINITELY_FOO means that the destination bytes (and also the source bytes, +// for 1_DST_1_SRC_COPY) are in the FOO format. Definitely means that the lack +// of the bit means "maybe FOO". It does not necessarily mean "not FOO". +// +// CHAIN_ETC means that decoding the entire token chain forms a UTF-8 or ASCII +// string, not just this current token. CHAIN_ETC_UTF_8 therefore distinguishes +// Unicode (UTF-8) strings from byte strings. MUST means that the the token +// producer (e.g. parser) must verify this. SHOULD means that the token +// consumer (e.g. renderer) should verify this. +// +// When a CHAIN_ETC_UTF_8 bit is set, the parser must ensure that non-ASCII +// code points (with multi-byte UTF-8 encodings) do not straddle token +// boundaries. Checking UTF-8 validity can inspect each token separately. +// +// The lack of any particular bit is conservative: it is valid for all-ASCII +// strings, in a single- or multi-token chain, to have none of these bits set. +#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001 +#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002 +#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004 +#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010 +#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020 +#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040 + +// CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded) +// produces multiples of D destination bytes. For example, +// CONVERT_1_DST_4_SRC_BACKSLASH_X means a source like "\\x23\\x67\\xAB", where +// 12 src bytes encode 3 dst bytes. +// +// Post-processing may further transform those D destination bytes (e.g. treat +// "\\xFF" as the Unicode code point U+00FF instead of the byte 0xFF), but that +// is out of scope of this VBD's semantics. +// +// When src is the empty string, multiple conversion algorithms are applicable +// (so these bits are not necessarily mutually exclusive), all producing the +// same empty dst string. +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000 +#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000 + +// -------- + +#define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001 +#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002 +#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004 +#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008 + +// -------- + +// For a source string of "123" or "0x9A", it is valid for a tokenizer to +// return any combination of: +// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT. +// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED. +// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED. +// +// For a source string of "+123" or "-0x9A", only the first two are valid. +// +// For a source string of "123.", only the first one is valid. +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004 + +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF 0x00020 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN 0x00040 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN 0x00080 + +// The number 300 might be represented as "\x01\x2C", "\x2C\x01\x00\x00" or +// "300", which are big-endian, little-endian or text. For binary formats, the +// token length (after adjusting for FORMAT_IGNORE_ETC) discriminates +// e.g. u16 little-endian vs u32 little-endian. +#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200 +#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400 + +#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000 + +// -------- + +// wuffs_base__token__value returns the token's high 46 bits, sign-extended. A +// negative value means an extended token, non-negative means a simple token. +static inline int64_t // +wuffs_base__token__value(const wuffs_base__token* t) { + return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE__SHIFT; +} + +// wuffs_base__token__value_extension returns a negative value if the token was +// not an extended token. +static inline int64_t // +wuffs_base__token__value_extension(const wuffs_base__token* t) { + return (~(int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT; +} + +// wuffs_base__token__value_major returns a negative value if the token was not +// a simple token. +static inline int64_t // +wuffs_base__token__value_major(const wuffs_base__token* t) { + return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT; +} + +// wuffs_base__token__value_base_category returns a negative value if the token +// was not a simple token. +static inline int64_t // +wuffs_base__token__value_base_category(const wuffs_base__token* t) { + return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT; +} + +static inline uint64_t // +wuffs_base__token__value_minor(const wuffs_base__token* t) { + return (t->repr >> WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) & 0x1FFFFFF; +} + +static inline uint64_t // +wuffs_base__token__value_base_detail(const wuffs_base__token* t) { + return (t->repr >> WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT) & 0x1FFFFF; +} + +static inline int64_t // +wuffs_base__token__value_base_detail__sign_extended( + const wuffs_base__token* t) { + // The VBD is 21 bits in the middle of t->repr. Left shift the high (64 - 21 + // - ETC__SHIFT) bits off, then right shift (sign-extending) back down. + uint64_t u = t->repr << (43 - WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT); + return ((int64_t)u) >> 43; +} + +static inline bool // +wuffs_base__token__continued(const wuffs_base__token* t) { + return t->repr & 0x10000; +} + +static inline uint64_t // +wuffs_base__token__length(const wuffs_base__token* t) { + return (t->repr >> WUFFS_BASE__TOKEN__LENGTH__SHIFT) & 0xFFFF; +} + +#ifdef __cplusplus + +inline int64_t // +wuffs_base__token::value() const { + return wuffs_base__token__value(this); +} + +inline int64_t // +wuffs_base__token::value_extension() const { + return wuffs_base__token__value_extension(this); +} + +inline int64_t // +wuffs_base__token::value_major() const { + return wuffs_base__token__value_major(this); +} + +inline int64_t // +wuffs_base__token::value_base_category() const { + return wuffs_base__token__value_base_category(this); +} + +inline uint64_t // +wuffs_base__token::value_minor() const { + return wuffs_base__token__value_minor(this); +} + +inline uint64_t // +wuffs_base__token::value_base_detail() const { + return wuffs_base__token__value_base_detail(this); +} + +inline int64_t // +wuffs_base__token::value_base_detail__sign_extended() const { + return wuffs_base__token__value_base_detail__sign_extended(this); +} + +inline bool // +wuffs_base__token::continued() const { + return wuffs_base__token__continued(this); +} + +inline uint64_t // +wuffs_base__token::length() const { + return wuffs_base__token__length(this); +} + +#endif // __cplusplus + +// -------- + +typedef WUFFS_BASE__SLICE(wuffs_base__token) wuffs_base__slice_token; + +static inline wuffs_base__slice_token // +wuffs_base__make_slice_token(wuffs_base__token* ptr, size_t len) { + wuffs_base__slice_token ret; + ret.ptr = ptr; + ret.len = len; + return ret; +} + +static inline wuffs_base__slice_token // +wuffs_base__empty_slice_token(void) { + wuffs_base__slice_token ret; + ret.ptr = NULL; + ret.len = 0; + return ret; +} + +// -------- + +// wuffs_base__token_buffer_meta is the metadata for a +// wuffs_base__token_buffer's data. +typedef struct wuffs_base__token_buffer_meta__struct { + size_t wi; // Write index. Invariant: wi <= len. + size_t ri; // Read index. Invariant: ri <= wi. + uint64_t pos; // Position of the buffer start relative to the stream start. + bool closed; // No further writes are expected. +} wuffs_base__token_buffer_meta; + +// wuffs_base__token_buffer is a 1-dimensional buffer (a pointer and length) +// plus additional metadata. +// +// A value with all fields zero is a valid, empty buffer. +typedef struct wuffs_base__token_buffer__struct { + wuffs_base__slice_token data; + wuffs_base__token_buffer_meta meta; + +#ifdef __cplusplus + inline bool is_valid() const; + inline void compact(); + inline void compact_retaining(uint64_t history_retain_length); + inline uint64_t reader_length() const; + inline wuffs_base__token* reader_pointer() const; + inline wuffs_base__slice_token reader_slice() const; + inline uint64_t reader_token_position() const; + inline uint64_t writer_length() const; + inline uint64_t writer_token_position() const; + inline wuffs_base__token* writer_pointer() const; + inline wuffs_base__slice_token writer_slice() const; +#endif // __cplusplus + +} wuffs_base__token_buffer; + +static inline wuffs_base__token_buffer // +wuffs_base__make_token_buffer(wuffs_base__slice_token data, + wuffs_base__token_buffer_meta meta) { + wuffs_base__token_buffer ret; + ret.data = data; + ret.meta = meta; + return ret; +} + +static inline wuffs_base__token_buffer_meta // +wuffs_base__make_token_buffer_meta(size_t wi, + size_t ri, + uint64_t pos, + bool closed) { + wuffs_base__token_buffer_meta ret; + ret.wi = wi; + ret.ri = ri; + ret.pos = pos; + ret.closed = closed; + return ret; +} + +static inline wuffs_base__token_buffer // +wuffs_base__slice_token__reader(wuffs_base__slice_token s, bool closed) { + wuffs_base__token_buffer ret; + ret.data.ptr = s.ptr; + ret.data.len = s.len; + ret.meta.wi = s.len; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = closed; + return ret; +} + +static inline wuffs_base__token_buffer // +wuffs_base__slice_token__writer(wuffs_base__slice_token s) { + wuffs_base__token_buffer ret; + ret.data.ptr = s.ptr; + ret.data.len = s.len; + ret.meta.wi = 0; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = false; + return ret; +} + +static inline wuffs_base__token_buffer // +wuffs_base__empty_token_buffer(void) { + wuffs_base__token_buffer ret; + ret.data.ptr = NULL; + ret.data.len = 0; + ret.meta.wi = 0; + ret.meta.ri = 0; + ret.meta.pos = 0; + ret.meta.closed = false; + return ret; +} + +static inline wuffs_base__token_buffer_meta // +wuffs_base__empty_token_buffer_meta(void) { + wuffs_base__token_buffer_meta ret; + ret.wi = 0; + ret.ri = 0; + ret.pos = 0; + ret.closed = false; + return ret; +} + +static inline bool // +wuffs_base__token_buffer__is_valid(const wuffs_base__token_buffer* buf) { + if (buf) { + if (buf->data.ptr) { + return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len); + } else { + return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0); + } + } + return false; +} + +// wuffs_base__token_buffer__compact moves any written but unread tokens to the +// start of the buffer. +static inline void // +wuffs_base__token_buffer__compact(wuffs_base__token_buffer* buf) { + if (!buf || (buf->meta.ri == 0)) { + return; + } + buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri); + size_t new_wi = buf->meta.wi - buf->meta.ri; + if (new_wi != 0) { + memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, + new_wi * sizeof(wuffs_base__token)); + } + buf->meta.wi = new_wi; + buf->meta.ri = 0; +} + +// wuffs_base__token_buffer__compact_retaining moves any written but unread +// tokens closer to the start of the buffer. It retains H tokens of history +// (the most recently read tokens), where H is min(buf->meta.ri, +// history_retain_length). A postcondition is that buf->meta.ri == H. +// +// wuffs_base__token_buffer__compact_retaining(0) is equivalent to +// wuffs_base__token_buffer__compact(). +// +// For example, if buf started like this: +// +// +--- ri = 3 +// v +// abcdefgh?? len = 10, pos = 900 +// ^ +// +--- wi = 8 +// +// Then, depending on history_retain_length, the resultant buf would be: +// +// HRL = 0 defgh????? ri = 0 wi = 5 pos = 903 +// HRL = 1 cdefgh???? ri = 1 wi = 6 pos = 902 +// HRL = 2 bcdefgh??? ri = 2 wi = 7 pos = 901 +// HRL = 3 abcdefgh?? ri = 3 wi = 8 pos = 900 +// HRL = 4+ abcdefgh?? ri = 3 wi = 8 pos = 900 +static inline void // +wuffs_base__token_buffer__compact_retaining(wuffs_base__token_buffer* buf, + uint64_t history_retain_length) { + if (!buf || (buf->meta.ri == 0)) { + return; + } + size_t old_ri = buf->meta.ri; + size_t new_ri = (size_t)(wuffs_base__u64__min(old_ri, history_retain_length)); + size_t memmove_start = old_ri - new_ri; + buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, memmove_start); + size_t new_wi = buf->meta.wi - memmove_start; + if ((new_wi != 0) && (memmove_start != 0)) { + memmove(buf->data.ptr, buf->data.ptr + memmove_start, + new_wi * sizeof(wuffs_base__token)); + } + buf->meta.wi = new_wi; + buf->meta.ri = new_ri; +} + +static inline uint64_t // +wuffs_base__token_buffer__reader_length(const wuffs_base__token_buffer* buf) { + return buf ? buf->meta.wi - buf->meta.ri : 0; +} + +static inline wuffs_base__token* // +wuffs_base__token_buffer__reader_pointer(const wuffs_base__token_buffer* buf) { + return buf ? (buf->data.ptr + buf->meta.ri) : NULL; +} + +static inline wuffs_base__slice_token // +wuffs_base__token_buffer__reader_slice(const wuffs_base__token_buffer* buf) { + return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.ri, + buf->meta.wi - buf->meta.ri) + : wuffs_base__empty_slice_token(); +} + +static inline uint64_t // +wuffs_base__token_buffer__reader_token_position( + const wuffs_base__token_buffer* buf) { + return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; +} + +static inline uint64_t // +wuffs_base__token_buffer__writer_length(const wuffs_base__token_buffer* buf) { + return buf ? buf->data.len - buf->meta.wi : 0; +} + +static inline wuffs_base__token* // +wuffs_base__token_buffer__writer_pointer(const wuffs_base__token_buffer* buf) { + return buf ? (buf->data.ptr + buf->meta.wi) : NULL; +} + +static inline wuffs_base__slice_token // +wuffs_base__token_buffer__writer_slice(const wuffs_base__token_buffer* buf) { + return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.wi, + buf->data.len - buf->meta.wi) + : wuffs_base__empty_slice_token(); +} + +static inline uint64_t // +wuffs_base__token_buffer__writer_token_position( + const wuffs_base__token_buffer* buf) { + return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__token_buffer::is_valid() const { + return wuffs_base__token_buffer__is_valid(this); +} + +inline void // +wuffs_base__token_buffer::compact() { + wuffs_base__token_buffer__compact(this); +} + +inline void // +wuffs_base__token_buffer::compact_retaining(uint64_t history_retain_length) { + wuffs_base__token_buffer__compact_retaining(this, history_retain_length); +} + +inline uint64_t // +wuffs_base__token_buffer::reader_length() const { + return wuffs_base__token_buffer__reader_length(this); +} + +inline wuffs_base__token* // +wuffs_base__token_buffer::reader_pointer() const { + return wuffs_base__token_buffer__reader_pointer(this); +} + +inline wuffs_base__slice_token // +wuffs_base__token_buffer::reader_slice() const { + return wuffs_base__token_buffer__reader_slice(this); +} + +inline uint64_t // +wuffs_base__token_buffer::reader_token_position() const { + return wuffs_base__token_buffer__reader_token_position(this); +} + +inline uint64_t // +wuffs_base__token_buffer::writer_length() const { + return wuffs_base__token_buffer__writer_length(this); +} + +inline wuffs_base__token* // +wuffs_base__token_buffer::writer_pointer() const { + return wuffs_base__token_buffer__writer_pointer(this); +} + +inline wuffs_base__slice_token // +wuffs_base__token_buffer::writer_slice() const { + return wuffs_base__token_buffer__writer_slice(this); +} + +inline uint64_t // +wuffs_base__token_buffer::writer_token_position() const { + return wuffs_base__token_buffer__writer_token_position(this); +} + +#endif // __cplusplus + +// ---------------- Memory Allocation + +// The memory allocation related functions in this section aren't used by Wuffs +// per se, but they may be helpful to the code that uses Wuffs. + +// wuffs_base__malloc_slice_uxx wraps calling a malloc-like function, except +// that it takes a uint64_t number of elements instead of a size_t size in +// bytes, and it returns a slice (a pointer and a length) instead of just a +// pointer. +// +// You can pass the C stdlib's malloc as the malloc_func. +// +// It returns an empty slice (containing a NULL ptr field) if (num_uxx * +// sizeof(uintxx_t)) would overflow SIZE_MAX. + +static inline wuffs_base__slice_u8 // +wuffs_base__malloc_slice_u8(void* (*malloc_func)(size_t), uint64_t num_u8) { + if (malloc_func && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) { + void* p = (*malloc_func)((size_t)(num_u8 * sizeof(uint8_t))); + if (p) { + return wuffs_base__make_slice_u8((uint8_t*)(p), (size_t)num_u8); + } + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +static inline wuffs_base__slice_u16 // +wuffs_base__malloc_slice_u16(void* (*malloc_func)(size_t), uint64_t num_u16) { + if (malloc_func && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) { + void* p = (*malloc_func)((size_t)(num_u16 * sizeof(uint16_t))); + if (p) { + return wuffs_base__make_slice_u16((uint16_t*)(p), (size_t)num_u16); + } + } + return wuffs_base__make_slice_u16(NULL, 0); +} + +static inline wuffs_base__slice_u32 // +wuffs_base__malloc_slice_u32(void* (*malloc_func)(size_t), uint64_t num_u32) { + if (malloc_func && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) { + void* p = (*malloc_func)((size_t)(num_u32 * sizeof(uint32_t))); + if (p) { + return wuffs_base__make_slice_u32((uint32_t*)(p), (size_t)num_u32); + } + } + return wuffs_base__make_slice_u32(NULL, 0); +} + +static inline wuffs_base__slice_u64 // +wuffs_base__malloc_slice_u64(void* (*malloc_func)(size_t), uint64_t num_u64) { + if (malloc_func && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) { + void* p = (*malloc_func)((size_t)(num_u64 * sizeof(uint64_t))); + if (p) { + return wuffs_base__make_slice_u64((uint64_t*)(p), (size_t)num_u64); + } + } + return wuffs_base__make_slice_u64(NULL, 0); +} + +// ---------------- Images + +#define WUFFS_BASE__IMAGE__DIMENSION_MAX_INCL 0xFFFFFF + +// wuffs_base__color_u32_argb_premul is an 8 bit per channel premultiplied +// Alpha, Red, Green, Blue color, as a uint32_t value. Its value is always +// 0xAARRGGBB (Alpha most significant, Blue least), regardless of endianness. +typedef uint32_t wuffs_base__color_u32_argb_premul; + +// wuffs_base__color_u32_argb_premul__is_valid returns whether c's Red, Green +// and Blue channels are all less than or equal to its Alpha channel. c uses +// premultiplied alpha, so 50% opaque 100% saturated red is 0x7F7F_0000 and a +// value like 0x7F80_0000 is invalid. +static inline bool // +wuffs_base__color_u32_argb_premul__is_valid( + wuffs_base__color_u32_argb_premul c) { + uint32_t a = 0xFF & (c >> 24); + uint32_t r = 0xFF & (c >> 16); + uint32_t g = 0xFF & (c >> 8); + uint32_t b = 0xFF & (c >> 0); + return (a >= r) && (a >= g) && (a >= b); +} + +static inline uint16_t // +wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__color_u32_argb_premul c) { + uint32_t r5 = 0xF800 & (c >> 8); + uint32_t g6 = 0x07E0 & (c >> 5); + uint32_t b5 = 0x001F & (c >> 3); + return (uint16_t)(r5 | g6 | b5); +} + +static inline wuffs_base__color_u32_argb_premul // +wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(uint16_t rgb_565) { + uint32_t b5 = 0x1F & (rgb_565 >> 0); + uint32_t b = (b5 << 3) | (b5 >> 2); + uint32_t g6 = 0x3F & (rgb_565 >> 5); + uint32_t g = (g6 << 2) | (g6 >> 4); + uint32_t r5 = 0x1F & (rgb_565 >> 11); + uint32_t r = (r5 << 3) | (r5 >> 2); + return 0xFF000000 | (r << 16) | (g << 8) | (b << 0); +} + +static inline uint8_t // +wuffs_base__color_u32_argb_premul__as__color_u8_gray( + wuffs_base__color_u32_argb_premul c) { + // Work in 16-bit color. + uint32_t cr = 0x101 * (0xFF & (c >> 16)); + uint32_t cg = 0x101 * (0xFF & (c >> 8)); + uint32_t cb = 0x101 * (0xFF & (c >> 0)); + + // These coefficients (the fractions 0.299, 0.587 and 0.114) are the same + // as those given by the JFIF specification. + // + // Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16). We + // shift by 24, not just by 16, because the return value is 8-bit color, not + // 16-bit color. + uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768; + return (uint8_t)(weighted_average >> 24); +} + +static inline uint16_t // +wuffs_base__color_u32_argb_premul__as__color_u16_gray( + wuffs_base__color_u32_argb_premul c) { + // Work in 16-bit color. + uint32_t cr = 0x101 * (0xFF & (c >> 16)); + uint32_t cg = 0x101 * (0xFF & (c >> 8)); + uint32_t cb = 0x101 * (0xFF & (c >> 0)); + + // These coefficients (the fractions 0.299, 0.587 and 0.114) are the same + // as those given by the JFIF specification. + // + // Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16). + uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768; + return (uint16_t)(weighted_average >> 16); +} + +// wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul converts +// from non-premultiplied alpha to premultiplied alpha. +static inline wuffs_base__color_u32_argb_premul // +wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + uint32_t argb_nonpremul) { + // Multiplying by 0x101 (twice, once for alpha and once for color) converts + // from 8-bit to 16-bit color. Shifting right by 8 undoes that. + // + // Working in the higher bit depth can produce slightly different (and + // arguably slightly more accurate) results. For example, given 8-bit blue + // and alpha of 0x80 and 0x81: + // + // - ((0x80 * 0x81 ) / 0xFF ) = 0x40 = 0x40 + // - ((0x8080 * 0x8181) / 0xFFFF) >> 8 = 0x4101 >> 8 = 0x41 + uint32_t a = 0xFF & (argb_nonpremul >> 24); + uint32_t a16 = a * (0x101 * 0x101); + + uint32_t r = 0xFF & (argb_nonpremul >> 16); + r = ((r * a16) / 0xFFFF) >> 8; + uint32_t g = 0xFF & (argb_nonpremul >> 8); + g = ((g * a16) / 0xFFFF) >> 8; + uint32_t b = 0xFF & (argb_nonpremul >> 0); + b = ((b * a16) / 0xFFFF) >> 8; + + return (a << 24) | (r << 16) | (g << 8) | (b << 0); +} + +// wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul converts +// from premultiplied alpha to non-premultiplied alpha. +static inline uint32_t // +wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + wuffs_base__color_u32_argb_premul c) { + uint32_t a = 0xFF & (c >> 24); + if (a == 0xFF) { + return c; + } else if (a == 0) { + return 0; + } + uint32_t a16 = a * 0x101; + + uint32_t r = 0xFF & (c >> 16); + r = ((r * (0x101 * 0xFFFF)) / a16) >> 8; + uint32_t g = 0xFF & (c >> 8); + g = ((g * (0x101 * 0xFFFF)) / a16) >> 8; + uint32_t b = 0xFF & (c >> 0); + b = ((b * (0x101 * 0xFFFF)) / a16) >> 8; + + return (a << 24) | (r << 16) | (g << 8) | (b << 0); +} + +// wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul converts +// from 4x16LE non-premultiplied alpha to 4x8 premultiplied alpha. +static inline wuffs_base__color_u32_argb_premul // +wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + uint64_t argb_nonpremul) { + uint32_t a16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 48))); + + uint32_t r16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 32))); + r16 = (r16 * a16) / 0xFFFF; + uint32_t g16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 16))); + g16 = (g16 * a16) / 0xFFFF; + uint32_t b16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 0))); + b16 = (b16 * a16) / 0xFFFF; + + return ((a16 >> 8) << 24) | ((r16 >> 8) << 16) | ((g16 >> 8) << 8) | + ((b16 >> 8) << 0); +} + +// wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul converts +// from 4x8 premultiplied alpha to 4x16LE non-premultiplied alpha. +static inline uint64_t // +wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( + wuffs_base__color_u32_argb_premul c) { + uint32_t a = 0xFF & (c >> 24); + if (a == 0xFF) { + uint64_t r16 = 0x101 * (0xFF & (c >> 16)); + uint64_t g16 = 0x101 * (0xFF & (c >> 8)); + uint64_t b16 = 0x101 * (0xFF & (c >> 0)); + return 0xFFFF000000000000u | (r16 << 32) | (g16 << 16) | (b16 << 0); + } else if (a == 0) { + return 0; + } + uint64_t a16 = a * 0x101; + + uint64_t r = 0xFF & (c >> 16); + uint64_t r16 = (r * (0x101 * 0xFFFF)) / a16; + uint64_t g = 0xFF & (c >> 8); + uint64_t g16 = (g * (0x101 * 0xFFFF)) / a16; + uint64_t b = 0xFF & (c >> 0); + uint64_t b16 = (b * (0x101 * 0xFFFF)) / a16; + + return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0); +} + +static inline uint64_t // +wuffs_base__color_u32__as__color_u64(uint32_t c) { + uint64_t a16 = 0x101 * (0xFF & (c >> 24)); + uint64_t r16 = 0x101 * (0xFF & (c >> 16)); + uint64_t g16 = 0x101 * (0xFF & (c >> 8)); + uint64_t b16 = 0x101 * (0xFF & (c >> 0)); + return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0); +} + +static inline uint32_t // +wuffs_base__color_u64__as__color_u32(uint64_t c) { + uint32_t a = ((uint32_t)(0xFF & (c >> 56))); + uint32_t r = ((uint32_t)(0xFF & (c >> 40))); + uint32_t g = ((uint32_t)(0xFF & (c >> 24))); + uint32_t b = ((uint32_t)(0xFF & (c >> 8))); + return (a << 24) | (r << 16) | (g << 8) | (b << 0); +} + +// wuffs_base__color_ycc__as__color_u32 converts from YCbCr to 0xAARRGGBB. The +// alpha bits are always 0xFF. +static inline wuffs_base__color_u32_argb_premul // +wuffs_base__color_ycc__as__color_u32(uint8_t yy, uint8_t cb, uint8_t cr) { + // Work in 16.16 fixed point arithmetic (so that 'one half' is (1 << 15)) and + // bias the chroma values by 0x80. + uint32_t yy32 = (((uint32_t)yy) << 16) | (1 << 15); + uint32_t cb32 = (((uint32_t)cb) - 0x80); + uint32_t cr32 = (((uint32_t)cr) - 0x80); + + // The formulae: + // + // R = Y + 1.40200 * Cr + // G = Y - 0.34414 * Cb - 0.71414 * Cr + // B = Y + 1.77200 * Cb + // + // When scaled by 1<<16: + // + // 0.34414 becomes 0x0581A = 22554. + // 0.71414 becomes 0x0B6D2 = 46802. + // 1.40200 becomes 0x166E9 = 91881. + // 1.77200 becomes 0x1C5A2 = 116130. + // + // Since we're working in 16.16 fixed point arithmetic, masking by 0x00FF0000 + // (possibly followed by a shift) gives the relevant 8 bits per channel. + // + // However, we need to saturate for overflow (above 0x00FFFFFF, but not so + // high that the MSB Most Significant Bit is set) or for underflow (below + // 0x00000000 as int32_t, which means that the MSB is set as uint32_t). In + // both cases, some of the high 8 bits (bits 24 ..= 31) will be set. + // + // "((uint32_t)(((int32_t)x) >> 31))" just replicates x's MSB across all 32 + // bits. Prepending that with "~" inverts those bits. Thus, "~(etc)" is + // either 0xFFFFFFFF (for overflow) or 0x00000000 (for underflow). + uint32_t rr32 = yy32 + (0x166E9 * cr32); + uint32_t gg32 = yy32 - (0x0581A * cb32) - (0x0B6D2 * cr32); + uint32_t bb32 = yy32 + (0x1C5A2 * cb32); + if (rr32 >> 24) { + rr32 = ~((uint32_t)(((int32_t)rr32) >> 31)); + } + if (gg32 >> 24) { + gg32 = ~((uint32_t)(((int32_t)gg32) >> 31)); + } + if (bb32 >> 24) { + bb32 = ~((uint32_t)(((int32_t)bb32) >> 31)); + } + return 0xFF000000 | // + ((0x00FF0000 & rr32) >> 0) | // + ((0x00FF0000 & gg32) >> 8) | // + ((0x00FF0000 & bb32) >> 16); +} + +// wuffs_base__color_ycc__as__color_u32_abgr is like +// wuffs_base__color_ycc__as__color_u32 but the uint32_t returned is in +// 0xAABBGGRR order, not 0xAARRGGBB. +static inline uint32_t // +wuffs_base__color_ycc__as__color_u32_abgr(uint8_t yy, uint8_t cb, uint8_t cr) { + uint32_t yy32 = (((uint32_t)yy) << 16) | (1 << 15); + uint32_t cb32 = (((uint32_t)cb) - 0x80); + uint32_t cr32 = (((uint32_t)cr) - 0x80); + uint32_t rr32 = yy32 + (0x166E9 * cr32); + uint32_t gg32 = yy32 - (0x0581A * cb32) - (0x0B6D2 * cr32); + uint32_t bb32 = yy32 + (0x1C5A2 * cb32); + if (rr32 >> 24) { + rr32 = ~((uint32_t)(((int32_t)rr32) >> 31)); + } + if (gg32 >> 24) { + gg32 = ~((uint32_t)(((int32_t)gg32) >> 31)); + } + if (bb32 >> 24) { + bb32 = ~((uint32_t)(((int32_t)bb32) >> 31)); + } + return 0xFF000000 | // + ((0x00FF0000 & bb32) >> 0) | // + ((0x00FF0000 & gg32) >> 8) | // + ((0x00FF0000 & rr32) >> 16); +} + +// -------- + +typedef uint8_t wuffs_base__pixel_blend; + +// wuffs_base__pixel_blend encodes how to blend source and destination pixels, +// accounting for transparency. It encompasses the Porter-Duff compositing +// operators as well as the other blending modes defined by PDF. +// +// TODO: implement the other modes. +#define WUFFS_BASE__PIXEL_BLEND__SRC ((wuffs_base__pixel_blend)0) +#define WUFFS_BASE__PIXEL_BLEND__SRC_OVER ((wuffs_base__pixel_blend)1) + +// -------- + +// wuffs_base__pixel_alpha_transparency is a pixel format's alpha channel +// model. It is a property of the pixel format in general, not of a specific +// pixel. An RGBA pixel format (with alpha) can still have fully opaque pixels. +typedef uint32_t wuffs_base__pixel_alpha_transparency; + +#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__OPAQUE 0 +#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__NONPREMULTIPLIED_ALPHA 1 +#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__PREMULTIPLIED_ALPHA 2 +#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__BINARY_ALPHA 3 + +// -------- + +// Deprecated: use WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL. +#define WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX 4 + +#define WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL 4 + +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__INDEX_PLANE 0 +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE 3 + +// A palette is 256 entries × 4 bytes per entry (e.g. BGRA). +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH 1024 + +// wuffs_base__pixel_format encodes the format of the bytes that constitute an +// image frame's pixel data. +// +// See https://github.com/google/wuffs/blob/main/doc/note/pixel-formats.md +// +// Do not manipulate its bits directly; they are private implementation +// details. Use methods such as wuffs_base__pixel_format__num_planes instead. +typedef struct wuffs_base__pixel_format__struct { + uint32_t repr; + +#ifdef __cplusplus + inline bool is_valid() const; + inline uint32_t bits_per_pixel() const; + inline bool is_direct() const; + inline bool is_indexed() const; + inline bool is_interleaved() const; + inline bool is_planar() const; + inline uint32_t num_planes() const; + inline wuffs_base__pixel_alpha_transparency transparency() const; +#endif // __cplusplus + +} wuffs_base__pixel_format; + +static inline wuffs_base__pixel_format // +wuffs_base__make_pixel_format(uint32_t repr) { + wuffs_base__pixel_format f; + f.repr = repr; + return f; +} + +// Common 8-bit-depth pixel formats. This list is not exhaustive; not all valid +// wuffs_base__pixel_format values are present. + +#define WUFFS_BASE__PIXEL_FORMAT__INVALID 0x00000000 + +#define WUFFS_BASE__PIXEL_FORMAT__A 0x02000008 + +#define WUFFS_BASE__PIXEL_FORMAT__Y 0x20000008 +#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE 0x2000000B +#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE 0x2010000B +#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL 0x21000008 +#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL 0x22000008 + +#define WUFFS_BASE__PIXEL_FORMAT__YCBCR 0x40020888 +#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL 0x41038888 +#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK 0x50038888 + +#define WUFFS_BASE__PIXEL_FORMAT__YCOCG 0x60020888 +#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL 0x61038888 +#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK 0x70038888 + +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL 0x81040008 +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL 0x82040008 +#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY 0x83040008 + +#define WUFFS_BASE__PIXEL_FORMAT__BGR_565 0x80000565 +#define WUFFS_BASE__PIXEL_FORMAT__BGR 0x80000888 +#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL 0x81008888 +#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE 0x8100BBBB +#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL 0x82008888 +#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE 0x8200BBBB +#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY 0x83008888 +#define WUFFS_BASE__PIXEL_FORMAT__BGRX 0x90008888 + +#define WUFFS_BASE__PIXEL_FORMAT__RGB 0xA0000888 +#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL 0xA1008888 +#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE 0xA100BBBB +#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL 0xA2008888 +#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE 0xA200BBBB +#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY 0xA3008888 +#define WUFFS_BASE__PIXEL_FORMAT__RGBX 0xB0008888 + +#define WUFFS_BASE__PIXEL_FORMAT__CMY 0xC0020888 +#define WUFFS_BASE__PIXEL_FORMAT__CMYK 0xD0038888 + +extern const uint32_t wuffs_base__pixel_format__bits_per_channel[16]; + +static inline bool // +wuffs_base__pixel_format__is_valid(const wuffs_base__pixel_format* f) { + return f->repr != 0; +} + +// wuffs_base__pixel_format__bits_per_pixel returns the number of bits per +// pixel for interleaved pixel formats, and returns 0 for planar pixel formats. +static inline uint32_t // +wuffs_base__pixel_format__bits_per_pixel(const wuffs_base__pixel_format* f) { + if (((f->repr >> 16) & 0x03) != 0) { + return 0; + } + return wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 0)] + + wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 4)] + + wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 8)] + + wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 12)]; +} + +static inline bool // +wuffs_base__pixel_format__is_direct(const wuffs_base__pixel_format* f) { + return ((f->repr >> 18) & 0x01) == 0; +} + +static inline bool // +wuffs_base__pixel_format__is_indexed(const wuffs_base__pixel_format* f) { + return ((f->repr >> 18) & 0x01) != 0; +} + +static inline bool // +wuffs_base__pixel_format__is_interleaved(const wuffs_base__pixel_format* f) { + return ((f->repr >> 16) & 0x03) == 0; +} + +static inline bool // +wuffs_base__pixel_format__is_planar(const wuffs_base__pixel_format* f) { + return ((f->repr >> 16) & 0x03) != 0; +} + +static inline uint32_t // +wuffs_base__pixel_format__num_planes(const wuffs_base__pixel_format* f) { + return ((f->repr >> 16) & 0x03) + 1; +} + +static inline wuffs_base__pixel_alpha_transparency // +wuffs_base__pixel_format__transparency(const wuffs_base__pixel_format* f) { + return (wuffs_base__pixel_alpha_transparency)((f->repr >> 24) & 0x03); +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__pixel_format::is_valid() const { + return wuffs_base__pixel_format__is_valid(this); +} + +inline uint32_t // +wuffs_base__pixel_format::bits_per_pixel() const { + return wuffs_base__pixel_format__bits_per_pixel(this); +} + +inline bool // +wuffs_base__pixel_format::is_direct() const { + return wuffs_base__pixel_format__is_direct(this); +} + +inline bool // +wuffs_base__pixel_format::is_indexed() const { + return wuffs_base__pixel_format__is_indexed(this); +} + +inline bool // +wuffs_base__pixel_format::is_interleaved() const { + return wuffs_base__pixel_format__is_interleaved(this); +} + +inline bool // +wuffs_base__pixel_format::is_planar() const { + return wuffs_base__pixel_format__is_planar(this); +} + +inline uint32_t // +wuffs_base__pixel_format::num_planes() const { + return wuffs_base__pixel_format__num_planes(this); +} + +inline wuffs_base__pixel_alpha_transparency // +wuffs_base__pixel_format::transparency() const { + return wuffs_base__pixel_format__transparency(this); +} + +#endif // __cplusplus + +// -------- + +// wuffs_base__pixel_subsampling encodes whether sample values cover one pixel +// or cover multiple pixels. +// +// See https://github.com/google/wuffs/blob/main/doc/note/pixel-subsampling.md +// +// Do not manipulate its bits directly; they are private implementation +// details. Use methods such as wuffs_base__pixel_subsampling__bias_x instead. +typedef struct wuffs_base__pixel_subsampling__struct { + uint32_t repr; + +#ifdef __cplusplus + inline uint32_t bias_x(uint32_t plane) const; + inline uint32_t denominator_x(uint32_t plane) const; + inline uint32_t bias_y(uint32_t plane) const; + inline uint32_t denominator_y(uint32_t plane) const; +#endif // __cplusplus + +} wuffs_base__pixel_subsampling; + +static inline wuffs_base__pixel_subsampling // +wuffs_base__make_pixel_subsampling(uint32_t repr) { + wuffs_base__pixel_subsampling s; + s.repr = repr; + return s; +} + +#define WUFFS_BASE__PIXEL_SUBSAMPLING__NONE 0x00000000 + +#define WUFFS_BASE__PIXEL_SUBSAMPLING__444 0x000000 +#define WUFFS_BASE__PIXEL_SUBSAMPLING__440 0x010100 +#define WUFFS_BASE__PIXEL_SUBSAMPLING__422 0x101000 +#define WUFFS_BASE__PIXEL_SUBSAMPLING__420 0x111100 +#define WUFFS_BASE__PIXEL_SUBSAMPLING__411 0x303000 +#define WUFFS_BASE__PIXEL_SUBSAMPLING__410 0x313100 + +static inline uint32_t // +wuffs_base__pixel_subsampling__bias_x(const wuffs_base__pixel_subsampling* s, + uint32_t plane) { + uint32_t shift = ((plane & 0x03) * 8) + 6; + return (s->repr >> shift) & 0x03; +} + +static inline uint32_t // +wuffs_base__pixel_subsampling__denominator_x( + const wuffs_base__pixel_subsampling* s, + uint32_t plane) { + uint32_t shift = ((plane & 0x03) * 8) + 4; + return ((s->repr >> shift) & 0x03) + 1; +} + +static inline uint32_t // +wuffs_base__pixel_subsampling__bias_y(const wuffs_base__pixel_subsampling* s, + uint32_t plane) { + uint32_t shift = ((plane & 0x03) * 8) + 2; + return (s->repr >> shift) & 0x03; +} + +static inline uint32_t // +wuffs_base__pixel_subsampling__denominator_y( + const wuffs_base__pixel_subsampling* s, + uint32_t plane) { + uint32_t shift = ((plane & 0x03) * 8) + 0; + return ((s->repr >> shift) & 0x03) + 1; +} + +#ifdef __cplusplus + +inline uint32_t // +wuffs_base__pixel_subsampling::bias_x(uint32_t plane) const { + return wuffs_base__pixel_subsampling__bias_x(this, plane); +} + +inline uint32_t // +wuffs_base__pixel_subsampling::denominator_x(uint32_t plane) const { + return wuffs_base__pixel_subsampling__denominator_x(this, plane); +} + +inline uint32_t // +wuffs_base__pixel_subsampling::bias_y(uint32_t plane) const { + return wuffs_base__pixel_subsampling__bias_y(this, plane); +} + +inline uint32_t // +wuffs_base__pixel_subsampling::denominator_y(uint32_t plane) const { + return wuffs_base__pixel_subsampling__denominator_y(this, plane); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__pixel_config__struct { + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + wuffs_base__pixel_format pixfmt; + wuffs_base__pixel_subsampling pixsub; + uint32_t width; + uint32_t height; + } private_impl; + +#ifdef __cplusplus + inline void set(uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height); + inline void invalidate(); + inline bool is_valid() const; + inline wuffs_base__pixel_format pixel_format() const; + inline wuffs_base__pixel_subsampling pixel_subsampling() const; + inline wuffs_base__rect_ie_u32 bounds() const; + inline uint32_t width() const; + inline uint32_t height() const; + inline uint64_t pixbuf_len() const; +#endif // __cplusplus + +} wuffs_base__pixel_config; + +static inline wuffs_base__pixel_config // +wuffs_base__null_pixel_config(void) { + wuffs_base__pixel_config ret; + ret.private_impl.pixfmt.repr = 0; + ret.private_impl.pixsub.repr = 0; + ret.private_impl.width = 0; + ret.private_impl.height = 0; + return ret; +} + +// TODO: Should this function return bool? An error type? +static inline void // +wuffs_base__pixel_config__set(wuffs_base__pixel_config* c, + uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height) { + if (!c) { + return; + } + if (pixfmt_repr) { + uint64_t wh = ((uint64_t)width) * ((uint64_t)height); + // TODO: handle things other than 1 byte per pixel. + if (wh <= ((uint64_t)SIZE_MAX)) { + c->private_impl.pixfmt.repr = pixfmt_repr; + c->private_impl.pixsub.repr = pixsub_repr; + c->private_impl.width = width; + c->private_impl.height = height; + return; + } + } + + c->private_impl.pixfmt.repr = 0; + c->private_impl.pixsub.repr = 0; + c->private_impl.width = 0; + c->private_impl.height = 0; +} + +static inline void // +wuffs_base__pixel_config__invalidate(wuffs_base__pixel_config* c) { + if (c) { + c->private_impl.pixfmt.repr = 0; + c->private_impl.pixsub.repr = 0; + c->private_impl.width = 0; + c->private_impl.height = 0; + } +} + +static inline bool // +wuffs_base__pixel_config__is_valid(const wuffs_base__pixel_config* c) { + return c && c->private_impl.pixfmt.repr; +} + +static inline wuffs_base__pixel_format // +wuffs_base__pixel_config__pixel_format(const wuffs_base__pixel_config* c) { + return c ? c->private_impl.pixfmt : wuffs_base__make_pixel_format(0); +} + +static inline wuffs_base__pixel_subsampling // +wuffs_base__pixel_config__pixel_subsampling(const wuffs_base__pixel_config* c) { + return c ? c->private_impl.pixsub : wuffs_base__make_pixel_subsampling(0); +} + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__pixel_config__bounds(const wuffs_base__pixel_config* c) { + if (c) { + wuffs_base__rect_ie_u32 ret; + ret.min_incl_x = 0; + ret.min_incl_y = 0; + ret.max_excl_x = c->private_impl.width; + ret.max_excl_y = c->private_impl.height; + return ret; + } + + wuffs_base__rect_ie_u32 ret; + ret.min_incl_x = 0; + ret.min_incl_y = 0; + ret.max_excl_x = 0; + ret.max_excl_y = 0; + return ret; +} + +static inline uint32_t // +wuffs_base__pixel_config__width(const wuffs_base__pixel_config* c) { + return c ? c->private_impl.width : 0; +} + +static inline uint32_t // +wuffs_base__pixel_config__height(const wuffs_base__pixel_config* c) { + return c ? c->private_impl.height : 0; +} + +// TODO: this is the right API for planar (not interleaved) pixbufs? Should it +// allow decoding into a color model different from the format's intrinsic one? +// For example, decoding a JPEG image straight to RGBA instead of to YCbCr? +static inline uint64_t // +wuffs_base__pixel_config__pixbuf_len(const wuffs_base__pixel_config* c) { + if (!c) { + return 0; + } + if (wuffs_base__pixel_format__is_planar(&c->private_impl.pixfmt)) { + // TODO: support planar pixel formats, concious of pixel subsampling. + return 0; + } + uint32_t bits_per_pixel = + wuffs_base__pixel_format__bits_per_pixel(&c->private_impl.pixfmt); + if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { + // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? + return 0; + } + uint64_t bytes_per_pixel = bits_per_pixel / 8; + + uint64_t n = + ((uint64_t)c->private_impl.width) * ((uint64_t)c->private_impl.height); + if (n > (UINT64_MAX / bytes_per_pixel)) { + return 0; + } + n *= bytes_per_pixel; + + if (wuffs_base__pixel_format__is_indexed(&c->private_impl.pixfmt)) { + if (n > + (UINT64_MAX - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) { + return 0; + } + n += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + } + + return n; +} + +#ifdef __cplusplus + +inline void // +wuffs_base__pixel_config::set(uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height) { + wuffs_base__pixel_config__set(this, pixfmt_repr, pixsub_repr, width, height); +} + +inline void // +wuffs_base__pixel_config::invalidate() { + wuffs_base__pixel_config__invalidate(this); +} + +inline bool // +wuffs_base__pixel_config::is_valid() const { + return wuffs_base__pixel_config__is_valid(this); +} + +inline wuffs_base__pixel_format // +wuffs_base__pixel_config::pixel_format() const { + return wuffs_base__pixel_config__pixel_format(this); +} + +inline wuffs_base__pixel_subsampling // +wuffs_base__pixel_config::pixel_subsampling() const { + return wuffs_base__pixel_config__pixel_subsampling(this); +} + +inline wuffs_base__rect_ie_u32 // +wuffs_base__pixel_config::bounds() const { + return wuffs_base__pixel_config__bounds(this); +} + +inline uint32_t // +wuffs_base__pixel_config::width() const { + return wuffs_base__pixel_config__width(this); +} + +inline uint32_t // +wuffs_base__pixel_config::height() const { + return wuffs_base__pixel_config__height(this); +} + +inline uint64_t // +wuffs_base__pixel_config::pixbuf_len() const { + return wuffs_base__pixel_config__pixbuf_len(this); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__image_config__struct { + wuffs_base__pixel_config pixcfg; + + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + uint64_t first_frame_io_position; + bool first_frame_is_opaque; + } private_impl; + +#ifdef __cplusplus + inline void set(uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height, + uint64_t first_frame_io_position, + bool first_frame_is_opaque); + inline void invalidate(); + inline bool is_valid() const; + inline uint64_t first_frame_io_position() const; + inline bool first_frame_is_opaque() const; +#endif // __cplusplus + +} wuffs_base__image_config; + +static inline wuffs_base__image_config // +wuffs_base__null_image_config(void) { + wuffs_base__image_config ret; + ret.pixcfg = wuffs_base__null_pixel_config(); + ret.private_impl.first_frame_io_position = 0; + ret.private_impl.first_frame_is_opaque = false; + return ret; +} + +// TODO: Should this function return bool? An error type? +static inline void // +wuffs_base__image_config__set(wuffs_base__image_config* c, + uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height, + uint64_t first_frame_io_position, + bool first_frame_is_opaque) { + if (!c) { + return; + } + if (pixfmt_repr) { + c->pixcfg.private_impl.pixfmt.repr = pixfmt_repr; + c->pixcfg.private_impl.pixsub.repr = pixsub_repr; + c->pixcfg.private_impl.width = width; + c->pixcfg.private_impl.height = height; + c->private_impl.first_frame_io_position = first_frame_io_position; + c->private_impl.first_frame_is_opaque = first_frame_is_opaque; + return; + } + + c->pixcfg.private_impl.pixfmt.repr = 0; + c->pixcfg.private_impl.pixsub.repr = 0; + c->pixcfg.private_impl.width = 0; + c->pixcfg.private_impl.height = 0; + c->private_impl.first_frame_io_position = 0; + c->private_impl.first_frame_is_opaque = 0; +} + +static inline void // +wuffs_base__image_config__invalidate(wuffs_base__image_config* c) { + if (c) { + c->pixcfg.private_impl.pixfmt.repr = 0; + c->pixcfg.private_impl.pixsub.repr = 0; + c->pixcfg.private_impl.width = 0; + c->pixcfg.private_impl.height = 0; + c->private_impl.first_frame_io_position = 0; + c->private_impl.first_frame_is_opaque = 0; + } +} + +static inline bool // +wuffs_base__image_config__is_valid(const wuffs_base__image_config* c) { + return c && wuffs_base__pixel_config__is_valid(&(c->pixcfg)); +} + +static inline uint64_t // +wuffs_base__image_config__first_frame_io_position( + const wuffs_base__image_config* c) { + return c ? c->private_impl.first_frame_io_position : 0; +} + +static inline bool // +wuffs_base__image_config__first_frame_is_opaque( + const wuffs_base__image_config* c) { + return c ? c->private_impl.first_frame_is_opaque : false; +} + +#ifdef __cplusplus + +inline void // +wuffs_base__image_config::set(uint32_t pixfmt_repr, + uint32_t pixsub_repr, + uint32_t width, + uint32_t height, + uint64_t first_frame_io_position, + bool first_frame_is_opaque) { + wuffs_base__image_config__set(this, pixfmt_repr, pixsub_repr, width, height, + first_frame_io_position, first_frame_is_opaque); +} + +inline void // +wuffs_base__image_config::invalidate() { + wuffs_base__image_config__invalidate(this); +} + +inline bool // +wuffs_base__image_config::is_valid() const { + return wuffs_base__image_config__is_valid(this); +} + +inline uint64_t // +wuffs_base__image_config::first_frame_io_position() const { + return wuffs_base__image_config__first_frame_io_position(this); +} + +inline bool // +wuffs_base__image_config::first_frame_is_opaque() const { + return wuffs_base__image_config__first_frame_is_opaque(this); +} + +#endif // __cplusplus + +// -------- + +// wuffs_base__animation_disposal encodes, for an animated image, how to +// dispose of a frame after displaying it: +// - None means to draw the next frame on top of this one. +// - Restore Background means to clear the frame's dirty rectangle to "the +// background color" (in practice, this means transparent black) before +// drawing the next frame. +// - Restore Previous means to undo the current frame, so that the next frame +// is drawn on top of the previous one. +typedef uint8_t wuffs_base__animation_disposal; + +#define WUFFS_BASE__ANIMATION_DISPOSAL__NONE ((wuffs_base__animation_disposal)0) +#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_BACKGROUND \ + ((wuffs_base__animation_disposal)1) +#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_PREVIOUS \ + ((wuffs_base__animation_disposal)2) + +// -------- + +typedef struct wuffs_base__frame_config__struct { + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + wuffs_base__rect_ie_u32 bounds; + wuffs_base__flicks duration; + uint64_t index; + uint64_t io_position; + wuffs_base__animation_disposal disposal; + bool opaque_within_bounds; + bool overwrite_instead_of_blend; + wuffs_base__color_u32_argb_premul background_color; + } private_impl; + +#ifdef __cplusplus + inline void set(wuffs_base__rect_ie_u32 bounds, + wuffs_base__flicks duration, + uint64_t index, + uint64_t io_position, + wuffs_base__animation_disposal disposal, + bool opaque_within_bounds, + bool overwrite_instead_of_blend, + wuffs_base__color_u32_argb_premul background_color); + inline wuffs_base__rect_ie_u32 bounds() const; + inline uint32_t width() const; + inline uint32_t height() const; + inline wuffs_base__flicks duration() const; + inline uint64_t index() const; + inline uint64_t io_position() const; + inline wuffs_base__animation_disposal disposal() const; + inline bool opaque_within_bounds() const; + inline bool overwrite_instead_of_blend() const; + inline wuffs_base__color_u32_argb_premul background_color() const; +#endif // __cplusplus + +} wuffs_base__frame_config; + +static inline wuffs_base__frame_config // +wuffs_base__null_frame_config(void) { + wuffs_base__frame_config ret; + ret.private_impl.bounds = wuffs_base__make_rect_ie_u32(0, 0, 0, 0); + ret.private_impl.duration = 0; + ret.private_impl.index = 0; + ret.private_impl.io_position = 0; + ret.private_impl.disposal = 0; + ret.private_impl.opaque_within_bounds = false; + ret.private_impl.overwrite_instead_of_blend = false; + return ret; +} + +static inline void // +wuffs_base__frame_config__set( + wuffs_base__frame_config* c, + wuffs_base__rect_ie_u32 bounds, + wuffs_base__flicks duration, + uint64_t index, + uint64_t io_position, + wuffs_base__animation_disposal disposal, + bool opaque_within_bounds, + bool overwrite_instead_of_blend, + wuffs_base__color_u32_argb_premul background_color) { + if (!c) { + return; + } + + c->private_impl.bounds = bounds; + c->private_impl.duration = duration; + c->private_impl.index = index; + c->private_impl.io_position = io_position; + c->private_impl.disposal = disposal; + c->private_impl.opaque_within_bounds = opaque_within_bounds; + c->private_impl.overwrite_instead_of_blend = overwrite_instead_of_blend; + c->private_impl.background_color = background_color; +} + +static inline wuffs_base__rect_ie_u32 // +wuffs_base__frame_config__bounds(const wuffs_base__frame_config* c) { + if (c) { + return c->private_impl.bounds; + } + + wuffs_base__rect_ie_u32 ret; + ret.min_incl_x = 0; + ret.min_incl_y = 0; + ret.max_excl_x = 0; + ret.max_excl_y = 0; + return ret; +} + +static inline uint32_t // +wuffs_base__frame_config__width(const wuffs_base__frame_config* c) { + return c ? wuffs_base__rect_ie_u32__width(&c->private_impl.bounds) : 0; +} + +static inline uint32_t // +wuffs_base__frame_config__height(const wuffs_base__frame_config* c) { + return c ? wuffs_base__rect_ie_u32__height(&c->private_impl.bounds) : 0; +} + +// wuffs_base__frame_config__duration returns the amount of time to display +// this frame. Zero means to display forever - a still (non-animated) image. +static inline wuffs_base__flicks // +wuffs_base__frame_config__duration(const wuffs_base__frame_config* c) { + return c ? c->private_impl.duration : 0; +} + +// wuffs_base__frame_config__index returns the index of this frame. The first +// frame in an image has index 0, the second frame has index 1, and so on. +static inline uint64_t // +wuffs_base__frame_config__index(const wuffs_base__frame_config* c) { + return c ? c->private_impl.index : 0; +} + +// wuffs_base__frame_config__io_position returns the I/O stream position before +// the frame config. +static inline uint64_t // +wuffs_base__frame_config__io_position(const wuffs_base__frame_config* c) { + return c ? c->private_impl.io_position : 0; +} + +// wuffs_base__frame_config__disposal returns, for an animated image, how to +// dispose of this frame after displaying it. +static inline wuffs_base__animation_disposal // +wuffs_base__frame_config__disposal(const wuffs_base__frame_config* c) { + return c ? c->private_impl.disposal : 0; +} + +// wuffs_base__frame_config__opaque_within_bounds returns whether all pixels +// within the frame's bounds are fully opaque. It makes no claim about pixels +// outside the frame bounds but still inside the overall image. The two +// bounding rectangles can differ for animated images. +// +// Its semantics are conservative. It is valid for a fully opaque frame to have +// this value be false: a false negative. +// +// If true, drawing the frame with WUFFS_BASE__PIXEL_BLEND__SRC and +// WUFFS_BASE__PIXEL_BLEND__SRC_OVER should be equivalent, in terms of +// resultant pixels, but the former may be faster. +static inline bool // +wuffs_base__frame_config__opaque_within_bounds( + const wuffs_base__frame_config* c) { + return c && c->private_impl.opaque_within_bounds; +} + +// wuffs_base__frame_config__overwrite_instead_of_blend returns, for an +// animated image, whether to ignore the previous image state (within the frame +// bounds) when drawing this incremental frame. Equivalently, whether to use +// WUFFS_BASE__PIXEL_BLEND__SRC instead of WUFFS_BASE__PIXEL_BLEND__SRC_OVER. +// +// The WebP spec (https://developers.google.com/speed/webp/docs/riff_container) +// calls this the "Blending method" bit. WebP's "Do not blend" corresponds to +// Wuffs' "overwrite_instead_of_blend". +static inline bool // +wuffs_base__frame_config__overwrite_instead_of_blend( + const wuffs_base__frame_config* c) { + return c && c->private_impl.overwrite_instead_of_blend; +} + +static inline wuffs_base__color_u32_argb_premul // +wuffs_base__frame_config__background_color(const wuffs_base__frame_config* c) { + return c ? c->private_impl.background_color : 0; +} + +#ifdef __cplusplus + +inline void // +wuffs_base__frame_config::set( + wuffs_base__rect_ie_u32 bounds, + wuffs_base__flicks duration, + uint64_t index, + uint64_t io_position, + wuffs_base__animation_disposal disposal, + bool opaque_within_bounds, + bool overwrite_instead_of_blend, + wuffs_base__color_u32_argb_premul background_color) { + wuffs_base__frame_config__set(this, bounds, duration, index, io_position, + disposal, opaque_within_bounds, + overwrite_instead_of_blend, background_color); +} + +inline wuffs_base__rect_ie_u32 // +wuffs_base__frame_config::bounds() const { + return wuffs_base__frame_config__bounds(this); +} + +inline uint32_t // +wuffs_base__frame_config::width() const { + return wuffs_base__frame_config__width(this); +} + +inline uint32_t // +wuffs_base__frame_config::height() const { + return wuffs_base__frame_config__height(this); +} + +inline wuffs_base__flicks // +wuffs_base__frame_config::duration() const { + return wuffs_base__frame_config__duration(this); +} + +inline uint64_t // +wuffs_base__frame_config::index() const { + return wuffs_base__frame_config__index(this); +} + +inline uint64_t // +wuffs_base__frame_config::io_position() const { + return wuffs_base__frame_config__io_position(this); +} + +inline wuffs_base__animation_disposal // +wuffs_base__frame_config::disposal() const { + return wuffs_base__frame_config__disposal(this); +} + +inline bool // +wuffs_base__frame_config::opaque_within_bounds() const { + return wuffs_base__frame_config__opaque_within_bounds(this); +} + +inline bool // +wuffs_base__frame_config::overwrite_instead_of_blend() const { + return wuffs_base__frame_config__overwrite_instead_of_blend(this); +} + +inline wuffs_base__color_u32_argb_premul // +wuffs_base__frame_config::background_color() const { + return wuffs_base__frame_config__background_color(this); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__pixel_buffer__struct { + wuffs_base__pixel_config pixcfg; + + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + wuffs_base__table_u8 planes[WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL]; + // TODO: color spaces. + } private_impl; + +#ifdef __cplusplus + inline wuffs_base__status set_interleaved( + const wuffs_base__pixel_config* pixcfg, + wuffs_base__table_u8 primary_memory, + wuffs_base__slice_u8 palette_memory); + inline wuffs_base__status set_from_slice( + const wuffs_base__pixel_config* pixcfg, + wuffs_base__slice_u8 pixbuf_memory); + inline wuffs_base__slice_u8 palette(); + inline wuffs_base__slice_u8 palette_or_else(wuffs_base__slice_u8 fallback); + inline wuffs_base__pixel_format pixel_format() const; + inline wuffs_base__table_u8 plane(uint32_t p); + inline wuffs_base__color_u32_argb_premul color_u32_at(uint32_t x, + uint32_t y) const; + inline wuffs_base__status set_color_u32_at( + uint32_t x, + uint32_t y, + wuffs_base__color_u32_argb_premul color); + inline wuffs_base__status set_color_u32_fill_rect( + wuffs_base__rect_ie_u32 rect, + wuffs_base__color_u32_argb_premul color); +#endif // __cplusplus + +} wuffs_base__pixel_buffer; + +static inline wuffs_base__pixel_buffer // +wuffs_base__null_pixel_buffer(void) { + wuffs_base__pixel_buffer ret; + ret.pixcfg = wuffs_base__null_pixel_config(); + ret.private_impl.planes[0] = wuffs_base__empty_table_u8(); + ret.private_impl.planes[1] = wuffs_base__empty_table_u8(); + ret.private_impl.planes[2] = wuffs_base__empty_table_u8(); + ret.private_impl.planes[3] = wuffs_base__empty_table_u8(); + return ret; +} + +static inline wuffs_base__status // +wuffs_base__pixel_buffer__set_interleaved( + wuffs_base__pixel_buffer* pb, + const wuffs_base__pixel_config* pixcfg, + wuffs_base__table_u8 primary_memory, + wuffs_base__slice_u8 palette_memory) { + if (!pb) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + memset(pb, 0, sizeof(*pb)); + if (!pixcfg || + wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt) && + (palette_memory.len < + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) { + return wuffs_base__make_status( + wuffs_base__error__bad_argument_length_too_short); + } + uint32_t bits_per_pixel = + wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt); + if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { + // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + uint64_t bytes_per_pixel = bits_per_pixel / 8; + + uint64_t width_in_bytes = + ((uint64_t)pixcfg->private_impl.width) * bytes_per_pixel; + if ((width_in_bytes > primary_memory.width) || + (pixcfg->private_impl.height > primary_memory.height)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + + pb->pixcfg = *pixcfg; + pb->private_impl.planes[0] = primary_memory; + if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) { + wuffs_base__table_u8* tab = + &pb->private_impl + .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; + tab->ptr = palette_memory.ptr; + tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + tab->height = 1; + tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + } + return wuffs_base__make_status(NULL); +} + +static inline wuffs_base__status // +wuffs_base__pixel_buffer__set_from_slice(wuffs_base__pixel_buffer* pb, + const wuffs_base__pixel_config* pixcfg, + wuffs_base__slice_u8 pixbuf_memory) { + if (!pb) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + memset(pb, 0, sizeof(*pb)); + if (!pixcfg) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if (wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) { + // TODO: support planar pixel formats, concious of pixel subsampling. + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + uint32_t bits_per_pixel = + wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt); + if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { + // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + uint64_t bytes_per_pixel = bits_per_pixel / 8; + + uint8_t* ptr = pixbuf_memory.ptr; + uint64_t len = pixbuf_memory.len; + if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) { + // Split a WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH byte + // chunk (1024 bytes = 256 palette entries × 4 bytes per entry) from the + // start of pixbuf_memory. We split from the start, not the end, so that + // the both chunks' pointers have the same alignment as the original + // pointer, up to an alignment of 1024. + if (len < WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return wuffs_base__make_status( + wuffs_base__error__bad_argument_length_too_short); + } + wuffs_base__table_u8* tab = + &pb->private_impl + .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; + tab->ptr = ptr; + tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + tab->height = 1; + tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + ptr += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + len -= WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; + } + + uint64_t wh = ((uint64_t)pixcfg->private_impl.width) * + ((uint64_t)pixcfg->private_impl.height); + size_t width = (size_t)(pixcfg->private_impl.width); + if ((wh > (UINT64_MAX / bytes_per_pixel)) || + (width > (SIZE_MAX / bytes_per_pixel))) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + wh *= bytes_per_pixel; + width = ((size_t)(width * bytes_per_pixel)); + if (wh > len) { + return wuffs_base__make_status( + wuffs_base__error__bad_argument_length_too_short); + } + + pb->pixcfg = *pixcfg; + wuffs_base__table_u8* tab = &pb->private_impl.planes[0]; + tab->ptr = ptr; + tab->width = width; + tab->height = pixcfg->private_impl.height; + tab->stride = width; + return wuffs_base__make_status(NULL); +} + +// wuffs_base__pixel_buffer__palette returns the palette color data. If +// non-empty, it will have length +// WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH. +static inline wuffs_base__slice_u8 // +wuffs_base__pixel_buffer__palette(wuffs_base__pixel_buffer* pb) { + if (pb && + wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) { + wuffs_base__table_u8* tab = + &pb->private_impl + .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; + if ((tab->width == + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) && + (tab->height == 1)) { + return wuffs_base__make_slice_u8( + tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH); + } + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +static inline wuffs_base__slice_u8 // +wuffs_base__pixel_buffer__palette_or_else(wuffs_base__pixel_buffer* pb, + wuffs_base__slice_u8 fallback) { + if (pb && + wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) { + wuffs_base__table_u8* tab = + &pb->private_impl + .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; + if ((tab->width == + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) && + (tab->height == 1)) { + return wuffs_base__make_slice_u8( + tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH); + } + } + return fallback; +} + +static inline wuffs_base__pixel_format // +wuffs_base__pixel_buffer__pixel_format(const wuffs_base__pixel_buffer* pb) { + if (pb) { + return pb->pixcfg.private_impl.pixfmt; + } + return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__INVALID); +} + +static inline wuffs_base__table_u8 // +wuffs_base__pixel_buffer__plane(wuffs_base__pixel_buffer* pb, uint32_t p) { + if (pb && (p < WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL)) { + return pb->private_impl.planes[p]; + } + + wuffs_base__table_u8 ret; + ret.ptr = NULL; + ret.width = 0; + ret.height = 0; + ret.stride = 0; + return ret; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul // +wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb, + uint32_t x, + uint32_t y); + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_buffer__set_color_u32_at( + wuffs_base__pixel_buffer* pb, + uint32_t x, + uint32_t y, + wuffs_base__color_u32_argb_premul color); + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_buffer__set_color_u32_fill_rect( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + wuffs_base__color_u32_argb_premul color); + +#ifdef __cplusplus + +inline wuffs_base__status // +wuffs_base__pixel_buffer::set_interleaved( + const wuffs_base__pixel_config* pixcfg_arg, + wuffs_base__table_u8 primary_memory, + wuffs_base__slice_u8 palette_memory) { + return wuffs_base__pixel_buffer__set_interleaved( + this, pixcfg_arg, primary_memory, palette_memory); +} + +inline wuffs_base__status // +wuffs_base__pixel_buffer::set_from_slice( + const wuffs_base__pixel_config* pixcfg_arg, + wuffs_base__slice_u8 pixbuf_memory) { + return wuffs_base__pixel_buffer__set_from_slice(this, pixcfg_arg, + pixbuf_memory); +} + +inline wuffs_base__slice_u8 // +wuffs_base__pixel_buffer::palette() { + return wuffs_base__pixel_buffer__palette(this); +} + +inline wuffs_base__slice_u8 // +wuffs_base__pixel_buffer::palette_or_else(wuffs_base__slice_u8 fallback) { + return wuffs_base__pixel_buffer__palette_or_else(this, fallback); +} + +inline wuffs_base__pixel_format // +wuffs_base__pixel_buffer::pixel_format() const { + return wuffs_base__pixel_buffer__pixel_format(this); +} + +inline wuffs_base__table_u8 // +wuffs_base__pixel_buffer::plane(uint32_t p) { + return wuffs_base__pixel_buffer__plane(this, p); +} + +inline wuffs_base__color_u32_argb_premul // +wuffs_base__pixel_buffer::color_u32_at(uint32_t x, uint32_t y) const { + return wuffs_base__pixel_buffer__color_u32_at(this, x, y); +} + +inline wuffs_base__status // +wuffs_base__pixel_buffer::set_color_u32_at( + uint32_t x, + uint32_t y, + wuffs_base__color_u32_argb_premul color) { + return wuffs_base__pixel_buffer__set_color_u32_at(this, x, y, color); +} + +inline wuffs_base__status // +wuffs_base__pixel_buffer::set_color_u32_fill_rect( + wuffs_base__rect_ie_u32 rect, + wuffs_base__color_u32_argb_premul color) { + return wuffs_base__pixel_buffer__set_color_u32_fill_rect(this, rect, color); +} + +#endif // __cplusplus + +// -------- + +typedef struct wuffs_base__decode_frame_options__struct { + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + uint8_t TODO; + } private_impl; + +#ifdef __cplusplus +#endif // __cplusplus + +} wuffs_base__decode_frame_options; + +#ifdef __cplusplus + +#endif // __cplusplus + +// -------- + +// wuffs_base__pixel_palette__closest_element returns the index of the palette +// element that minimizes the sum of squared differences of the four ARGB +// channels, working in premultiplied alpha. Ties favor the smaller index. +// +// The palette_slice.len may equal (N*4), for N less than 256, which means that +// only the first N palette elements are considered. It returns 0 when N is 0. +// +// Applying this function on a per-pixel basis will not produce whole-of-image +// dithering. +WUFFS_BASE__MAYBE_STATIC uint8_t // +wuffs_base__pixel_palette__closest_element( + wuffs_base__slice_u8 palette_slice, + wuffs_base__pixel_format palette_format, + wuffs_base__color_u32_argb_premul c); + +// -------- + +// TODO: should the func type take restrict pointers? +typedef uint64_t (*wuffs_base__pixel_swizzler__func)(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len); + +typedef uint64_t (*wuffs_base__pixel_swizzler__transparent_black_func)( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + uint64_t num_pixels, + uint32_t dst_pixfmt_bytes_per_pixel); + +typedef struct wuffs_base__pixel_swizzler__struct { + // Do not access the private_impl's fields directly. There is no API/ABI + // compatibility or safety guarantee if you do so. + struct { + wuffs_base__pixel_swizzler__func func; + wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func; + uint32_t dst_pixfmt_bytes_per_pixel; + uint32_t src_pixfmt_bytes_per_pixel; + } private_impl; + +#ifdef __cplusplus + inline wuffs_base__status prepare(wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__pixel_format src_pixfmt, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend); + inline uint64_t swizzle_interleaved_from_slice( + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src) const; +#endif // __cplusplus + +} wuffs_base__pixel_swizzler; + +// wuffs_base__pixel_swizzler__prepare readies the pixel swizzler so that its +// other methods may be called. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__pixel_format src_pixfmt, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend); + +// wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice converts pixels +// from a source format to a destination format. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src); + +#ifdef __cplusplus + +inline wuffs_base__status // +wuffs_base__pixel_swizzler::prepare(wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__pixel_format src_pixfmt, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + return wuffs_base__pixel_swizzler__prepare(this, dst_pixfmt, dst_palette, + src_pixfmt, src_palette, blend); +} + +uint64_t // +wuffs_base__pixel_swizzler::swizzle_interleaved_from_slice( + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src) const { + return wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( + this, dst, dst_palette, src); +} + +#endif // __cplusplus + +// ---------------- String Conversions + +// Options (bitwise or'ed together) for wuffs_base__parse_number_xxx +// functions. The XXX options apply to both integer and floating point. The FXX +// options apply only to floating point. + +#define WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000) + +// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES means to accept +// inputs like "00", "0644" and "00.7". By default, they are rejected. +#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES \ + ((uint32_t)0x00000001) + +// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES means to accept inputs like +// "1__2" and "_3.141_592". By default, they are rejected. +#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES ((uint32_t)0x00000002) + +// WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to accept +// "1,5" and not "1.5" as one-and-a-half. +// +// If the caller wants to accept either, it is responsible for canonicalizing +// the input before calling wuffs_base__parse_number_fxx. The caller also has +// more context on e.g. exactly how to treat something like "$1,234". +#define WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \ + ((uint32_t)0x00000010) + +// WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN means to reject inputs that +// would lead to infinite or Not-a-Number floating point values. By default, +// they are accepted. +// +// This affects the literal "inf" as input, but also affects inputs like +// "1e999" that would overflow double-precision floating point. +#define WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN ((uint32_t)0x00000020) + +// -------- + +// Options (bitwise or'ed together) for wuffs_base__render_number_xxx +// functions. The XXX options apply to both integer and floating point. The FXX +// options apply only to floating point. + +#define WUFFS_BASE__RENDER_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000) + +// WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT means to render to the right side +// (higher indexes) of the destination slice, leaving any untouched bytes on +// the left side (lower indexes). The default is vice versa: rendering on the +// left with slack on the right. +#define WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT ((uint32_t)0x00000100) + +// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN means to render the leading +// "+" for non-negative numbers: "+0" and "+12.3" instead of "0" and "12.3". +#define WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN ((uint32_t)0x00000200) + +// WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to render +// one-and-a-half as "1,5" instead of "1.5". +#define WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \ + ((uint32_t)0x00001000) + +// WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ETC means whether to never +// (EXPONENT_ABSENT, equivalent to printf's "%f") or to always +// (EXPONENT_PRESENT, equivalent to printf's "%e") render a floating point +// number as "1.23e+05" instead of "123000". +// +// Having both bits set is the same has having neither bit set, where the +// notation used depends on whether the exponent is sufficiently large: "0.5" +// is preferred over "5e-01" but "5e-09" is preferred over "0.000000005". +#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT ((uint32_t)0x00002000) +#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT ((uint32_t)0x00004000) + +// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION means to render the +// smallest number of digits so that parsing the resultant string will recover +// the same double-precision floating point number. +// +// For example, double-precision cannot distinguish between 0.3 and +// 0.299999999999999988897769753748434595763683319091796875, so when this bit +// is set, rendering the latter will produce "0.3" but rendering +// 0.3000000000000000444089209850062616169452667236328125 will produce +// "0.30000000000000004". +#define WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION \ + ((uint32_t)0x00008000) + +// ---------------- IEEE 754 Floating Point + +// wuffs_base__ieee_754_bit_representation__etc converts between a double +// precision numerical value and its IEEE 754 representations: +// - 16-bit: 1 sign bit, 5 exponent bits, 10 explicit significand bits. +// - 32-bit: 1 sign bit, 8 exponent bits, 23 explicit significand bits. +// - 64-bit: 1 sign bit, 11 exponent bits, 52 explicit significand bits. +// +// For example, it converts between: +// - +1.0 and 0x3C00, 0x3F80_0000 or 0x3FF0_0000_0000_0000. +// - +5.5 and 0x4580, 0x40B0_0000 or 0x4016_0000_0000_0000. +// - -inf and 0xFC00, 0xFF80_0000 or 0xFFF0_0000_0000_0000. +// +// Converting from f64 to shorter formats (f16 or f32, represented in C as +// uint16_t and uint32_t) may be lossy. Such functions have names that look +// like etc_truncate, as converting finite numbers produce equal or smaller +// (closer-to-zero) finite numbers. For example, 1048576.0 is a perfectly valid +// f64 number, but converting it to a f16 (with truncation) produces 65504.0, +// the largest finite f16 number. Truncating a f64-typed value d to f32 does +// not always produce the same result as the C-style cast ((float)d), as +// casting can convert from finite numbers to infinite ones. +// +// Converting infinities or NaNs produces infinities or NaNs and always report +// no loss, even though there a multiple NaN representations so that round- +// tripping a f64-typed NaN may produce a different 64 bits. Nonetheless, the +// etc_truncate functions preserve a NaN's "quiet vs signaling" bit. +// +// See https://en.wikipedia.org/wiki/Double-precision_floating-point_format + +typedef struct wuffs_base__lossy_value_u16__struct { + uint16_t value; + bool lossy; +} wuffs_base__lossy_value_u16; + +typedef struct wuffs_base__lossy_value_u32__struct { + uint32_t value; + bool lossy; +} wuffs_base__lossy_value_u32; + +WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 // +wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f); + +WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 // +wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f); + +static inline uint64_t // +wuffs_base__ieee_754_bit_representation__from_f64_to_u64(double f) { + uint64_t u = 0; + if (sizeof(uint64_t) == sizeof(double)) { + memcpy(&u, &f, sizeof(uint64_t)); + } + return u; +} + +static inline double // +wuffs_base__ieee_754_bit_representation__from_u16_to_f64(uint16_t u) { + uint64_t v = ((uint64_t)(u & 0x8000)) << 48; + + do { + uint64_t exp = (u >> 10) & 0x1F; + uint64_t man = u & 0x3FF; + if (exp == 0x1F) { // Infinity or NaN. + exp = 2047; + } else if (exp != 0) { // Normal. + exp += 1008; // 1008 = 1023 - 15, the difference in biases. + } else if (man != 0) { // Subnormal but non-zero. + uint32_t clz = wuffs_base__count_leading_zeroes_u64(man); + exp = 1062 - clz; // 1062 = 1008 + 64 - 10. + man = 0x3FF & (man << (clz - 53)); + } else { // Zero. + break; + } + v |= (exp << 52) | (man << 42); + } while (0); + + double f = 0; + if (sizeof(uint64_t) == sizeof(double)) { + memcpy(&f, &v, sizeof(uint64_t)); + } + return f; +} + +static inline double // +wuffs_base__ieee_754_bit_representation__from_u32_to_f64(uint32_t u) { + float f = 0; + if (sizeof(uint32_t) == sizeof(float)) { + memcpy(&f, &u, sizeof(uint32_t)); + } + return (double)f; +} + +static inline double // +wuffs_base__ieee_754_bit_representation__from_u64_to_f64(uint64_t u) { + double f = 0; + if (sizeof(uint64_t) == sizeof(double)) { + memcpy(&f, &u, sizeof(uint64_t)); + } + return f; +} + +// ---------------- Parsing and Rendering Numbers + +// wuffs_base__parse_number_f64 parses the floating point number in s. For +// example, if s contains the bytes "1.5" then it will return the double 1.5. +// +// It returns an error if s does not contain a floating point number. +// +// It does not necessarily return an error if the conversion is lossy, e.g. if +// s is "0.3", which double-precision floating point cannot represent exactly. +// +// Similarly, the returned value may be infinite (and no error returned) even +// if s was not "inf", when the input is nominally finite but sufficiently +// larger than DBL_MAX, about 1.8e+308. +// +// It is similar to the C standard library's strtod function, but: +// - Errors are returned in-band (in a result type), not out-of-band (errno). +// - It takes a slice (a pointer and length), not a NUL-terminated C string. +// - It does not take an optional endptr argument. It does not allow a partial +// parse: it returns an error unless all of s is consumed. +// - It does not allow whitespace, leading or otherwise. +// - It does not allow hexadecimal floating point numbers. +// - It is not affected by i18n / l10n settings such as environment variables. +// +// The options argument can change these, but by default, it: +// - Allows "inf", "+Infinity" and "-NAN", case insensitive. Similarly, +// without an explicit opt-out, it would successfully parse "1e999" as +// infinity, even though it overflows double-precision floating point. +// - Rejects underscores. With an explicit opt-in, "_3.141_592" would +// successfully parse as an approximation to π. +// - Rejects unnecessary leading zeroes: "00", "0644" and "00.7". +// - Uses a dot '1.5' instead of a comma '1,5' for the decimal separator. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // +wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options); + +// wuffs_base__parse_number_i64 parses the ASCII integer in s. For example, if +// s contains the bytes "-123" then it will return the int64_t -123. +// +// It returns an error if s does not contain an integer or if the integer +// within would overflow an int64_t. +// +// It is similar to wuffs_base__parse_number_u64 but it returns a signed +// integer, not an unsigned integer. It also allows a leading '+' or '-'. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 // +wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options); + +// wuffs_base__parse_number_u64 parses the ASCII integer in s. For example, if +// s contains the bytes "123" then it will return the uint64_t 123. +// +// It returns an error if s does not contain an integer or if the integer +// within would overflow a uint64_t. +// +// It is similar to the C standard library's strtoull function, but: +// - Errors are returned in-band (in a result type), not out-of-band (errno). +// - It takes a slice (a pointer and length), not a NUL-terminated C string. +// - It does not take an optional endptr argument. It does not allow a partial +// parse: it returns an error unless all of s is consumed. +// - It does not allow whitespace, leading or otherwise. +// - It does not allow a leading '+' or '-'. +// - It does not take a base argument (e.g. base 10 vs base 16). Instead, it +// always accepts both decimal (e.g "1234", "0d5678") and hexadecimal (e.g. +// "0x9aBC"). The caller is responsible for prior filtering of e.g. hex +// numbers if they are unwanted. For example, Wuffs' JSON decoder will only +// produce a wuffs_base__token for decimal numbers, not hexadecimal. +// - It is not affected by i18n / l10n settings such as environment variables. +// +// The options argument can change these, but by default, it: +// - Rejects underscores. With an explicit opt-in, "__0D_1_002" would +// successfully parse as "one thousand and two". Underscores are still +// rejected inside the optional 2-byte opening "0d" or "0X" that denotes +// base-10 or base-16. +// - Rejects unnecessary leading zeroes: "00" and "0644". +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 // +wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options); + +// -------- + +// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL is the string length of +// "-9223372036854775808" and "+9223372036854775807", INT64_MIN and INT64_MAX. +#define WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL 20 + +// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL is the string length of +// "+18446744073709551615", UINT64_MAX. +#define WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL 21 + +// wuffs_base__render_number_f64 writes the decimal encoding of x to dst and +// returns the number of bytes written. If dst is shorter than the entire +// encoding, it returns 0 (and no bytes are written). +// +// For those familiar with C's printf or Go's fmt.Printf functions: +// - "%e" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT option. +// - "%f" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT option. +// - "%g" means neither or both bits are set. +// +// The precision argument controls the number of digits rendered, excluding the +// exponent (the "e+05" in "1.23e+05"): +// - for "%e" and "%f" it is the number of digits after the decimal separator, +// - for "%g" it is the number of significant digits (and trailing zeroes are +// removed). +// +// A precision of 6 gives similar output to printf's defaults. +// +// A precision greater than 4095 is equivalent to 4095. +// +// The precision argument is ignored when the +// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION option is set. This is +// similar to Go's strconv.FormatFloat with a negative (i.e. non-sensical) +// precision, but there is no corresponding feature in C's printf. +// +// Extreme values of x will be rendered as "NaN", "Inf" (or "+Inf" if the +// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN option is set) or "-Inf". +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_f64(wuffs_base__slice_u8 dst, + double x, + uint32_t precision, + uint32_t options); + +// wuffs_base__render_number_i64 writes the decimal encoding of x to dst and +// returns the number of bytes written. If dst is shorter than the entire +// encoding, it returns 0 (and no bytes are written). +// +// dst will never be too short if its length is at least 20, also known as +// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_i64(wuffs_base__slice_u8 dst, + int64_t x, + uint32_t options); + +// wuffs_base__render_number_u64 writes the decimal encoding of x to dst and +// returns the number of bytes written. If dst is shorter than the entire +// encoding, it returns 0 (and no bytes are written). +// +// dst will never be too short if its length is at least 21, also known as +// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_u64(wuffs_base__slice_u8 dst, + uint64_t x, + uint32_t options); + +// ---------------- Base-16 + +// Options (bitwise or'ed together) for wuffs_base__base_16__xxx functions. + +#define WUFFS_BASE__BASE_16__DEFAULT_OPTIONS ((uint32_t)0x00000000) + +// wuffs_base__base_16__decode2 converts "6A6b" to "jk", where e.g. 'j' is +// U+006A. There are 2 src bytes for every dst byte. +// +// It assumes that the src bytes are two hexadecimal digits (0-9, A-F, a-f), +// repeated. It may write nonsense bytes if not, although it will not read or +// write out of bounds. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// wuffs_base__base_16__decode4 converts both "\\x6A\\x6b" and "??6a??6B" to +// "jk", where e.g. 'j' is U+006A. There are 4 src bytes for every dst byte. +// +// It assumes that the src bytes are two ignored bytes and then two hexadecimal +// digits (0-9, A-F, a-f), repeated. It may write nonsense bytes if not, +// although it will not read or write out of bounds. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// wuffs_base__base_16__encode2 converts "jk" to "6A6B", where e.g. 'j' is +// U+006A. There are 2 dst bytes for every src byte. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// wuffs_base__base_16__encode4 converts "jk" to "\\x6A\\x6B", where e.g. 'j' +// is U+006A. There are 4 dst bytes for every src byte. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// ---------------- Base-64 + +// Options (bitwise or'ed together) for wuffs_base__base_64__xxx functions. + +#define WUFFS_BASE__BASE_64__DEFAULT_OPTIONS ((uint32_t)0x00000000) + +// WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING means that, when decoding base-64, +// the input may (but does not need to) be padded with '=' bytes so that the +// overall encoded length in bytes is a multiple of 4. A successful decoding +// will return a num_src that includes those padding bytes. +// +// Excess padding (e.g. three final '='s) will be rejected as bad data. +#define WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING ((uint32_t)0x00000001) + +// WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING means that, when encoding base-64, +// the output will be padded with '=' bytes so that the overall encoded length +// in bytes is a multiple of 4. +#define WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING ((uint32_t)0x00000002) + +// WUFFS_BASE__BASE_64__URL_ALPHABET means that, for base-64, the URL-friendly +// and file-name-friendly alphabet be used, as per RFC 4648 section 5. When +// this option bit is off, the standard alphabet from section 4 is used. +#define WUFFS_BASE__BASE_64__URL_ALPHABET ((uint32_t)0x00000100) + +// wuffs_base__base_64__decode transforms base-64 encoded bytes from src to +// arbitrary bytes in dst. +// +// It will not permit line breaks or other whitespace in src. Filtering those +// out is the responsibility of the caller. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_64__decode(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// wuffs_base__base_64__encode transforms arbitrary bytes from src to base-64 +// encoded bytes in dst. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_64__encode(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options); + +// ---------------- Unicode and UTF-8 + +#define WUFFS_BASE__UNICODE_CODE_POINT__MIN_INCL 0x00000000 +#define WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL 0x0010FFFF + +#define WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER 0x0000FFFD + +#define WUFFS_BASE__UNICODE_SURROGATE__MIN_INCL 0x0000D800 +#define WUFFS_BASE__UNICODE_SURROGATE__MAX_INCL 0x0000DFFF + +#define WUFFS_BASE__ASCII__MIN_INCL 0x00 +#define WUFFS_BASE__ASCII__MAX_INCL 0x7F + +#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MIN_INCL 1 +#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL 4 + +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MIN_INCL 0x00000000 +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MAX_INCL 0x0000007F +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MIN_INCL 0x00000080 +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MAX_INCL 0x000007FF +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MIN_INCL 0x00000800 +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MAX_INCL 0x0000FFFF +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MIN_INCL 0x00010000 +#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MAX_INCL 0x0010FFFF + +// -------- + +// wuffs_base__utf_8__next__output is the type returned by +// wuffs_base__utf_8__next. +typedef struct wuffs_base__utf_8__next__output__struct { + uint32_t code_point; + uint32_t byte_length; + +#ifdef __cplusplus + inline bool is_valid() const; +#endif // __cplusplus + +} wuffs_base__utf_8__next__output; + +static inline wuffs_base__utf_8__next__output // +wuffs_base__make_utf_8__next__output(uint32_t code_point, + uint32_t byte_length) { + wuffs_base__utf_8__next__output ret; + ret.code_point = code_point; + ret.byte_length = byte_length; + return ret; +} + +static inline bool // +wuffs_base__utf_8__next__output__is_valid( + const wuffs_base__utf_8__next__output* o) { + if (o) { + uint32_t cp = o->code_point; + switch (o->byte_length) { + case 1: + return (cp <= 0x7F); + case 2: + return (0x080 <= cp) && (cp <= 0x7FF); + case 3: + // Avoid the 0xD800 ..= 0xDFFF surrogate range. + return ((0x0800 <= cp) && (cp <= 0xD7FF)) || + ((0xE000 <= cp) && (cp <= 0xFFFF)); + case 4: + return (0x00010000 <= cp) && (cp <= 0x0010FFFF); + } + } + return false; +} + +#ifdef __cplusplus + +inline bool // +wuffs_base__utf_8__next__output::is_valid() const { + return wuffs_base__utf_8__next__output__is_valid(this); +} + +#endif // __cplusplus + +// -------- + +// wuffs_base__utf_8__encode writes the UTF-8 encoding of code_point to s and +// returns the number of bytes written. If code_point is invalid, or if s is +// shorter than the entire encoding, it returns 0 (and no bytes are written). +// +// s will never be too short if its length is at least 4, also known as +// WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point); + +// wuffs_base__utf_8__next returns the next UTF-8 code point (and that code +// point's byte length) at the start of the read-only slice (s_ptr, s_len). +// +// There are exactly two cases in which this function returns something where +// wuffs_base__utf_8__next__output__is_valid is false: +// - If s is empty then it returns {.code_point=0, .byte_length=0}. +// - If s is non-empty and starts with invalid UTF-8 then it returns +// {.code_point=WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, .byte_length=1}. +// +// Otherwise, it returns something where +// wuffs_base__utf_8__next__output__is_valid is true. +// +// In any case, it always returns an output that satisfies both of: +// - (output.code_point <= WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL). +// - (output.byte_length <= s_len). +// +// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice +// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single +// code point, then this function may return something invalid. It is the +// caller's responsibility to split on or otherwise manage UTF-8 boundaries. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // +wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len); + +// wuffs_base__utf_8__next_from_end is like wuffs_base__utf_8__next except that +// it looks at the end of (s_ptr, s_len) instead of the start. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // +wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len); + +// wuffs_base__utf_8__longest_valid_prefix returns the largest n such that the +// sub-slice s[..n] is valid UTF-8, where s is the read-only slice (s_ptr, +// s_len). +// +// In particular, it returns s_len if and only if all of s is valid UTF-8. +// +// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice +// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single +// code point, then this function will return less than s_len. It is the +// caller's responsibility to split on or otherwise manage UTF-8 boundaries. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len); + +// wuffs_base__ascii__longest_valid_prefix returns the largest n such that the +// sub-slice s[..n] is valid ASCII, where s is the read-only slice (s_ptr, +// s_len). +// +// In particular, it returns s_len if and only if all of s is valid ASCII. +// Equivalently, when none of the bytes in s have the 0x80 high bit set. +// +// For modular builds that divide the base module into sub-modules, using this +// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just +// WUFFS_CONFIG__MODULE__BASE__CORE. +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len); + +// ---------------- Interface Declarations. + +// For modular builds that divide the base module into sub-modules, using these +// functions require the WUFFS_CONFIG__MODULE__BASE__INTERFACES sub-module, not +// just WUFFS_CONFIG__MODULE__BASE__CORE. + +// -------- + +extern const char wuffs_base__hasher_u32__vtable_name[]; + +typedef struct wuffs_base__hasher_u32__func_ptrs__struct { + uint32_t (*checksum_u32)( + const void* self); + uint64_t (*get_quirk)( + const void* self, + uint32_t a_key); + wuffs_base__status (*set_quirk)( + void* self, + uint32_t a_key, + uint64_t a_value); + wuffs_base__empty_struct (*update)( + void* self, + wuffs_base__slice_u8 a_x); + uint32_t (*update_u32)( + void* self, + wuffs_base__slice_u8 a_x); +} wuffs_base__hasher_u32__func_ptrs; + +typedef struct wuffs_base__hasher_u32__struct wuffs_base__hasher_u32; + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__hasher_u32__checksum_u32( + const wuffs_base__hasher_u32* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u32__get_quirk( + const wuffs_base__hasher_u32* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__hasher_u32__set_quirk( + wuffs_base__hasher_u32* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__hasher_u32__update( + wuffs_base__hasher_u32* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__hasher_u32__update_u32( + wuffs_base__hasher_u32* self, + wuffs_base__slice_u8 a_x); + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_base__hasher_u32__struct { + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable first_vtable; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_base__hasher_u32, wuffs_unique_ptr_deleter>; +#endif + + inline uint32_t + checksum_u32() const { + return wuffs_base__hasher_u32__checksum_u32(this); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_base__hasher_u32__get_quirk( + this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_base__hasher_u32__set_quirk( + this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_base__hasher_u32__update( + this, a_x); + } + + inline uint32_t + update_u32( + wuffs_base__slice_u8 a_x) { + return wuffs_base__hasher_u32__update_u32( + this, a_x); + } + +#endif // __cplusplus +}; // struct wuffs_base__hasher_u32__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +// -------- + +extern const char wuffs_base__hasher_u64__vtable_name[]; + +typedef struct wuffs_base__hasher_u64__func_ptrs__struct { + uint64_t (*checksum_u64)( + const void* self); + uint64_t (*get_quirk)( + const void* self, + uint32_t a_key); + wuffs_base__status (*set_quirk)( + void* self, + uint32_t a_key, + uint64_t a_value); + wuffs_base__empty_struct (*update)( + void* self, + wuffs_base__slice_u8 a_x); + uint64_t (*update_u64)( + void* self, + wuffs_base__slice_u8 a_x); +} wuffs_base__hasher_u64__func_ptrs; + +typedef struct wuffs_base__hasher_u64__struct wuffs_base__hasher_u64; + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__checksum_u64( + const wuffs_base__hasher_u64* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__get_quirk( + const wuffs_base__hasher_u64* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__hasher_u64__set_quirk( + wuffs_base__hasher_u64* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__hasher_u64__update( + wuffs_base__hasher_u64* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__update_u64( + wuffs_base__hasher_u64* self, + wuffs_base__slice_u8 a_x); + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_base__hasher_u64__struct { + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable first_vtable; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_base__hasher_u64, wuffs_unique_ptr_deleter>; +#endif + + inline uint64_t + checksum_u64() const { + return wuffs_base__hasher_u64__checksum_u64(this); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_base__hasher_u64__get_quirk( + this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_base__hasher_u64__set_quirk( + this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_base__hasher_u64__update( + this, a_x); + } + + inline uint64_t + update_u64( + wuffs_base__slice_u8 a_x) { + return wuffs_base__hasher_u64__update_u64( + this, a_x); + } + +#endif // __cplusplus +}; // struct wuffs_base__hasher_u64__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +// -------- + +extern const char wuffs_base__image_decoder__vtable_name[]; + +typedef struct wuffs_base__image_decoder__func_ptrs__struct { + wuffs_base__status (*decode_frame)( + void* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + wuffs_base__status (*decode_frame_config)( + void* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + wuffs_base__status (*decode_image_config)( + void* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + wuffs_base__rect_ie_u32 (*frame_dirty_rect)( + const void* self); + uint64_t (*get_quirk)( + const void* self, + uint32_t a_key); + uint64_t (*history_retain_length)( + const void* self); + uint32_t (*num_animation_loops)( + const void* self); + uint64_t (*num_decoded_frame_configs)( + const void* self); + uint64_t (*num_decoded_frames)( + const void* self); + wuffs_base__status (*restart_frame)( + void* self, + uint64_t a_index, + uint64_t a_io_position); + wuffs_base__status (*set_quirk)( + void* self, + uint32_t a_key, + uint64_t a_value); + wuffs_base__empty_struct (*set_report_metadata)( + void* self, + uint32_t a_fourcc, + bool a_report); + wuffs_base__status (*tell_me_more)( + void* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + wuffs_base__range_ii_u64 (*workbuf_len)( + const void* self); +} wuffs_base__image_decoder__func_ptrs; + +typedef struct wuffs_base__image_decoder__struct wuffs_base__image_decoder; + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_frame( + wuffs_base__image_decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_frame_config( + wuffs_base__image_decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_image_config( + wuffs_base__image_decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_base__image_decoder__frame_dirty_rect( + const wuffs_base__image_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__get_quirk( + const wuffs_base__image_decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__history_retain_length( + const wuffs_base__image_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__image_decoder__num_animation_loops( + const wuffs_base__image_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__num_decoded_frame_configs( + const wuffs_base__image_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__num_decoded_frames( + const wuffs_base__image_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__restart_frame( + wuffs_base__image_decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__set_quirk( + wuffs_base__image_decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__image_decoder__set_report_metadata( + wuffs_base__image_decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__tell_me_more( + wuffs_base__image_decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__image_decoder__workbuf_len( + const wuffs_base__image_decoder* self); + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_base__image_decoder__struct { + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable first_vtable; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_base__image_decoder, wuffs_unique_ptr_deleter>; +#endif + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_base__image_decoder__decode_frame( + this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_base__image_decoder__decode_frame_config( + this, a_dst, a_src); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_base__image_decoder__decode_image_config( + this, a_dst, a_src); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_base__image_decoder__frame_dirty_rect(this); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_base__image_decoder__get_quirk( + this, a_key); + } + + inline uint64_t + history_retain_length() const { + return wuffs_base__image_decoder__history_retain_length(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_base__image_decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_base__image_decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_base__image_decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_base__image_decoder__restart_frame( + this, a_index, a_io_position); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_base__image_decoder__set_quirk( + this, a_key, a_value); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__image_decoder__set_report_metadata( + this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_base__image_decoder__tell_me_more( + this, a_dst, a_minfo, a_src); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_base__image_decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_base__image_decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +// -------- + +extern const char wuffs_base__io_transformer__vtable_name[]; + +typedef struct wuffs_base__io_transformer__func_ptrs__struct { + uint64_t (*get_quirk)( + const void* self, + uint32_t a_key); + uint64_t (*history_retain_length)( + const void* self); + wuffs_base__status (*set_quirk)( + void* self, + uint32_t a_key, + uint64_t a_value); + wuffs_base__status (*transform_io)( + void* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + wuffs_base__range_ii_u64 (*workbuf_len)( + const void* self); +} wuffs_base__io_transformer__func_ptrs; + +typedef struct wuffs_base__io_transformer__struct wuffs_base__io_transformer; + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__io_transformer__get_quirk( + const wuffs_base__io_transformer* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__io_transformer__history_retain_length( + const wuffs_base__io_transformer* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__io_transformer__set_quirk( + wuffs_base__io_transformer* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__io_transformer__transform_io( + wuffs_base__io_transformer* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__io_transformer__workbuf_len( + const wuffs_base__io_transformer* self); + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_base__io_transformer__struct { + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable first_vtable; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_base__io_transformer, wuffs_unique_ptr_deleter>; +#endif + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_base__io_transformer__get_quirk( + this, a_key); + } + + inline uint64_t + history_retain_length() const { + return wuffs_base__io_transformer__history_retain_length(this); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_base__io_transformer__set_quirk( + this, a_key, a_value); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_base__io_transformer__transform_io( + this, a_dst, a_src, a_workbuf); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_base__io_transformer__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_base__io_transformer__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +// -------- + +extern const char wuffs_base__token_decoder__vtable_name[]; + +typedef struct wuffs_base__token_decoder__func_ptrs__struct { + wuffs_base__status (*decode_tokens)( + void* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + uint64_t (*get_quirk)( + const void* self, + uint32_t a_key); + uint64_t (*history_retain_length)( + const void* self); + wuffs_base__status (*set_quirk)( + void* self, + uint32_t a_key, + uint64_t a_value); + wuffs_base__range_ii_u64 (*workbuf_len)( + const void* self); +} wuffs_base__token_decoder__func_ptrs; + +typedef struct wuffs_base__token_decoder__struct wuffs_base__token_decoder; + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__token_decoder__decode_tokens( + wuffs_base__token_decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__token_decoder__get_quirk( + const wuffs_base__token_decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__token_decoder__history_retain_length( + const wuffs_base__token_decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__token_decoder__set_quirk( + wuffs_base__token_decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__token_decoder__workbuf_len( + const wuffs_base__token_decoder* self); + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_base__token_decoder__struct { + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable first_vtable; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_base__token_decoder, wuffs_unique_ptr_deleter>; +#endif + + inline wuffs_base__status + decode_tokens( + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_base__token_decoder__decode_tokens( + this, a_dst, a_src, a_workbuf); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_base__token_decoder__get_quirk( + this, a_key); + } + + inline uint64_t + history_retain_length() const { + return wuffs_base__token_decoder__history_retain_length(this); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_base__token_decoder__set_quirk( + this, a_key, a_value); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_base__token_decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_base__token_decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +// ---------------- + +#ifdef __cplusplus +} // extern "C" +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +// ---------------- Public Consts + +// ---------------- Struct Declarations + +typedef struct wuffs_adler32__hasher__struct wuffs_adler32__hasher; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_adler32__hasher__initialize( + wuffs_adler32__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_adler32__hasher(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_adler32__hasher* +wuffs_adler32__hasher__alloc(void); + +static inline wuffs_base__hasher_u32* +wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32(void) { + return (wuffs_base__hasher_u32*)(wuffs_adler32__hasher__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__hasher_u32* +wuffs_adler32__hasher__upcast_as__wuffs_base__hasher_u32( + wuffs_adler32__hasher* p) { + return (wuffs_base__hasher_u32*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_adler32__hasher__get_quirk( + const wuffs_adler32__hasher* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_adler32__hasher__set_quirk( + wuffs_adler32__hasher* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_adler32__hasher__update( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_adler32__hasher__update_u32( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_adler32__hasher__checksum_u32( + const wuffs_adler32__hasher* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_adler32__hasher__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__hasher_u32; + wuffs_base__vtable null_vtable; + + uint32_t f_state; + bool f_started; + + wuffs_base__empty_struct (*choosy_up)( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_adler32__hasher, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_adler32__hasher__alloc()); + } + + static inline wuffs_base__hasher_u32::unique_ptr + alloc_as__wuffs_base__hasher_u32() { + return wuffs_base__hasher_u32::unique_ptr( + wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_adler32__hasher__struct() = delete; + wuffs_adler32__hasher__struct(const wuffs_adler32__hasher__struct&) = delete; + wuffs_adler32__hasher__struct& operator=( + const wuffs_adler32__hasher__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_adler32__hasher__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__hasher_u32* + upcast_as__wuffs_base__hasher_u32() { + return (wuffs_base__hasher_u32*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_adler32__hasher__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_adler32__hasher__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_adler32__hasher__update(this, a_x); + } + + inline uint32_t + update_u32( + wuffs_base__slice_u8 a_x) { + return wuffs_adler32__hasher__update_u32(this, a_x); + } + + inline uint32_t + checksum_u32() const { + return wuffs_adler32__hasher__checksum_u32(this); + } + +#endif // __cplusplus +}; // struct wuffs_adler32__hasher__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_bmp__error__bad_header[]; +extern const char wuffs_bmp__error__bad_rle_compression[]; +extern const char wuffs_bmp__error__truncated_input[]; +extern const char wuffs_bmp__error__unsupported_bmp_file[]; + +// ---------------- Public Consts + +#define WUFFS_BMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_bmp__decoder__struct wuffs_bmp__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_bmp__decoder__initialize( + wuffs_bmp__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_bmp__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_bmp__decoder* +wuffs_bmp__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_bmp__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_bmp__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_bmp__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__get_quirk( + const wuffs_bmp__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__set_quirk( + wuffs_bmp__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_image_config( + wuffs_bmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_frame_config( + wuffs_bmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_frame( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_bmp__decoder__frame_dirty_rect( + const wuffs_bmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_bmp__decoder__num_animation_loops( + const wuffs_bmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__num_decoded_frame_configs( + const wuffs_bmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__num_decoded_frames( + const wuffs_bmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__restart_frame( + wuffs_bmp__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_bmp__decoder__set_report_metadata( + wuffs_bmp__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__tell_me_more( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__history_retain_length( + const wuffs_bmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_bmp__decoder__workbuf_len( + const wuffs_bmp__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_bmp__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint8_t f_call_sequence; + bool f_top_down; + uint32_t f_pad_per_row; + uint32_t f_src_pixfmt; + uint32_t f_io_redirect_fourcc; + uint64_t f_io_redirect_pos; + uint64_t f_frame_config_io_position; + uint32_t f_bitmap_info_len; + uint32_t f_padding; + uint32_t f_bits_per_pixel; + uint32_t f_compression; + uint32_t f_channel_masks[4]; + uint8_t f_channel_shifts[4]; + uint8_t f_channel_num_bits[4]; + uint32_t f_dst_x; + uint32_t f_dst_y; + uint32_t f_dst_y_inc; + uint32_t f_pending_pad; + uint32_t f_rle_state; + uint32_t f_rle_length; + uint8_t f_rle_delta_x; + bool f_rle_padded; + wuffs_base__pixel_swizzler f_swizzler; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + uint32_t p_tell_me_more[1]; + uint32_t p_read_palette[1]; + } private_impl; + + struct { + uint8_t f_scratch[2048]; + uint8_t f_src_palette[1024]; + + struct { + uint64_t scratch; + } s_do_decode_image_config[1]; + struct { + uint64_t scratch; + } s_do_decode_frame[1]; + struct { + uint32_t v_i; + uint64_t scratch; + } s_read_palette[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_bmp__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_bmp__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_bmp__decoder__struct() = delete; + wuffs_bmp__decoder__struct(const wuffs_bmp__decoder__struct&) = delete; + wuffs_bmp__decoder__struct& operator=( + const wuffs_bmp__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_bmp__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_bmp__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_bmp__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_bmp__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_bmp__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_bmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_bmp__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_bmp__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_bmp__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_bmp__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_bmp__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_bmp__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_bmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_bmp__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_bmp__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_bmp__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[]; +extern const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[]; +extern const char wuffs_bzip2__error__bad_block_header[]; +extern const char wuffs_bzip2__error__bad_block_length[]; +extern const char wuffs_bzip2__error__bad_checksum[]; +extern const char wuffs_bzip2__error__bad_header[]; +extern const char wuffs_bzip2__error__bad_number_of_sections[]; +extern const char wuffs_bzip2__error__truncated_input[]; +extern const char wuffs_bzip2__error__unsupported_block_randomization[]; + +// ---------------- Public Consts + +#define WUFFS_BZIP2__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_bzip2__decoder__struct wuffs_bzip2__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_bzip2__decoder__initialize( + wuffs_bzip2__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_bzip2__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_bzip2__decoder* +wuffs_bzip2__decoder__alloc(void); + +static inline wuffs_base__io_transformer* +wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer(void) { + return (wuffs_base__io_transformer*)(wuffs_bzip2__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__io_transformer* +wuffs_bzip2__decoder__upcast_as__wuffs_base__io_transformer( + wuffs_bzip2__decoder* p) { + return (wuffs_base__io_transformer*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bzip2__decoder__get_quirk( + const wuffs_bzip2__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bzip2__decoder__set_quirk( + wuffs_bzip2__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bzip2__decoder__history_retain_length( + const wuffs_bzip2__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_bzip2__decoder__workbuf_len( + const wuffs_bzip2__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bzip2__decoder__transform_io( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_bzip2__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__io_transformer; + wuffs_base__vtable null_vtable; + + uint32_t f_bits; + uint32_t f_n_bits; + uint32_t f_max_incl_block_size; + uint32_t f_block_size; + bool f_decode_huffman_finished; + uint8_t f_decode_huffman_which; + uint32_t f_decode_huffman_ticks; + uint32_t f_decode_huffman_section; + uint32_t f_decode_huffman_run_shift; + uint32_t f_flush_pointer; + uint32_t f_flush_repeat_count; + uint8_t f_flush_prev; + bool f_ignore_checksum; + uint32_t f_final_checksum_have; + uint32_t f_block_checksum_have; + uint32_t f_block_checksum_want; + uint32_t f_original_pointer; + uint32_t f_num_symbols; + uint32_t f_num_huffman_codes; + uint32_t f_num_sections; + uint32_t f_code_lengths_bitmask; + + uint32_t p_transform_io[1]; + uint32_t p_do_transform_io[1]; + uint32_t p_prepare_block[1]; + uint32_t p_read_code_lengths[1]; + uint32_t p_flush_slow[1]; + uint32_t p_decode_huffman_slow[1]; + } private_impl; + + struct { + uint32_t f_scratch; + uint32_t f_letter_counts[256]; + uint8_t f_presence[256]; + uint8_t f_mtft[256]; + uint8_t f_huffman_selectors[32768]; + uint16_t f_huffman_trees[6][257][2]; + uint16_t f_huffman_tables[6][256]; + uint32_t f_bwt[1048576]; + + struct { + uint32_t v_i; + uint64_t v_tag; + uint32_t v_final_checksum_want; + } s_do_transform_io[1]; + struct { + uint32_t v_i; + uint32_t v_selector; + } s_prepare_block[1]; + struct { + uint32_t v_i; + uint32_t v_code_length; + } s_read_code_lengths[1]; + struct { + uint32_t v_flush_pointer; + uint32_t v_flush_repeat_count; + uint8_t v_flush_prev; + uint32_t v_block_checksum_have; + uint32_t v_block_size; + uint8_t v_curr; + uint64_t scratch; + } s_flush_slow[1]; + struct { + uint32_t v_node_index; + } s_decode_huffman_slow[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_bzip2__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_bzip2__decoder__alloc()); + } + + static inline wuffs_base__io_transformer::unique_ptr + alloc_as__wuffs_base__io_transformer() { + return wuffs_base__io_transformer::unique_ptr( + wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_bzip2__decoder__struct() = delete; + wuffs_bzip2__decoder__struct(const wuffs_bzip2__decoder__struct&) = delete; + wuffs_bzip2__decoder__struct& operator=( + const wuffs_bzip2__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_bzip2__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__io_transformer* + upcast_as__wuffs_base__io_transformer() { + return (wuffs_base__io_transformer*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_bzip2__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_bzip2__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_bzip2__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_bzip2__decoder__workbuf_len(this); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_bzip2__decoder__transform_io(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_bzip2__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_cbor__error__bad_input[]; +extern const char wuffs_cbor__error__unsupported_recursion_depth[]; + +// ---------------- Public Consts + +#define WUFFS_CBOR__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024 + +#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2 + +#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9 + +#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997 + +#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143 + +#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216 + +#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608 + +#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304 + +// ---------------- Struct Declarations + +typedef struct wuffs_cbor__decoder__struct wuffs_cbor__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_cbor__decoder__initialize( + wuffs_cbor__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_cbor__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_cbor__decoder* +wuffs_cbor__decoder__alloc(void); + +static inline wuffs_base__token_decoder* +wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder(void) { + return (wuffs_base__token_decoder*)(wuffs_cbor__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__token_decoder* +wuffs_cbor__decoder__upcast_as__wuffs_base__token_decoder( + wuffs_cbor__decoder* p) { + return (wuffs_base__token_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_cbor__decoder__get_quirk( + const wuffs_cbor__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_cbor__decoder__set_quirk( + wuffs_cbor__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_cbor__decoder__history_retain_length( + const wuffs_cbor__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_cbor__decoder__workbuf_len( + const wuffs_cbor__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_cbor__decoder__decode_tokens( + wuffs_cbor__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_cbor__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__token_decoder; + wuffs_base__vtable null_vtable; + + bool f_end_of_data; + + uint32_t p_decode_tokens[1]; + } private_impl; + + struct { + uint32_t f_stack[64]; + uint64_t f_container_num_remaining[1024]; + + struct { + uint64_t v_string_length; + uint32_t v_depth; + bool v_tagged; + uint8_t v_indefinite_string_major_type; + } s_decode_tokens[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_cbor__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_cbor__decoder__alloc()); + } + + static inline wuffs_base__token_decoder::unique_ptr + alloc_as__wuffs_base__token_decoder() { + return wuffs_base__token_decoder::unique_ptr( + wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_cbor__decoder__struct() = delete; + wuffs_cbor__decoder__struct(const wuffs_cbor__decoder__struct&) = delete; + wuffs_cbor__decoder__struct& operator=( + const wuffs_cbor__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_cbor__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__token_decoder* + upcast_as__wuffs_base__token_decoder() { + return (wuffs_base__token_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_cbor__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_cbor__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_cbor__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_cbor__decoder__workbuf_len(this); + } + + inline wuffs_base__status + decode_tokens( + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_cbor__decoder__decode_tokens(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_cbor__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +// ---------------- Public Consts + +// ---------------- Struct Declarations + +typedef struct wuffs_crc32__ieee_hasher__struct wuffs_crc32__ieee_hasher; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_crc32__ieee_hasher__initialize( + wuffs_crc32__ieee_hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_crc32__ieee_hasher(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_crc32__ieee_hasher* +wuffs_crc32__ieee_hasher__alloc(void); + +static inline wuffs_base__hasher_u32* +wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32(void) { + return (wuffs_base__hasher_u32*)(wuffs_crc32__ieee_hasher__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__hasher_u32* +wuffs_crc32__ieee_hasher__upcast_as__wuffs_base__hasher_u32( + wuffs_crc32__ieee_hasher* p) { + return (wuffs_base__hasher_u32*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_crc32__ieee_hasher__get_quirk( + const wuffs_crc32__ieee_hasher* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_crc32__ieee_hasher__set_quirk( + wuffs_crc32__ieee_hasher* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__update( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_crc32__ieee_hasher__update_u32( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_crc32__ieee_hasher__checksum_u32( + const wuffs_crc32__ieee_hasher* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_crc32__ieee_hasher__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__hasher_u32; + wuffs_base__vtable null_vtable; + + uint32_t f_state; + + wuffs_base__empty_struct (*choosy_up)( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_crc32__ieee_hasher, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_crc32__ieee_hasher__alloc()); + } + + static inline wuffs_base__hasher_u32::unique_ptr + alloc_as__wuffs_base__hasher_u32() { + return wuffs_base__hasher_u32::unique_ptr( + wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_crc32__ieee_hasher__struct() = delete; + wuffs_crc32__ieee_hasher__struct(const wuffs_crc32__ieee_hasher__struct&) = delete; + wuffs_crc32__ieee_hasher__struct& operator=( + const wuffs_crc32__ieee_hasher__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_crc32__ieee_hasher__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__hasher_u32* + upcast_as__wuffs_base__hasher_u32() { + return (wuffs_base__hasher_u32*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_crc32__ieee_hasher__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_crc32__ieee_hasher__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_crc32__ieee_hasher__update(this, a_x); + } + + inline uint32_t + update_u32( + wuffs_base__slice_u8 a_x) { + return wuffs_crc32__ieee_hasher__update_u32(this, a_x); + } + + inline uint32_t + checksum_u32() const { + return wuffs_crc32__ieee_hasher__checksum_u32(this); + } + +#endif // __cplusplus +}; // struct wuffs_crc32__ieee_hasher__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_deflate__error__bad_huffman_code_over_subscribed[]; +extern const char wuffs_deflate__error__bad_huffman_code_under_subscribed[]; +extern const char wuffs_deflate__error__bad_huffman_code_length_count[]; +extern const char wuffs_deflate__error__bad_huffman_code_length_repetition[]; +extern const char wuffs_deflate__error__bad_huffman_code[]; +extern const char wuffs_deflate__error__bad_huffman_minimum_code_length[]; +extern const char wuffs_deflate__error__bad_block[]; +extern const char wuffs_deflate__error__bad_distance[]; +extern const char wuffs_deflate__error__bad_distance_code_count[]; +extern const char wuffs_deflate__error__bad_literal_length_code_count[]; +extern const char wuffs_deflate__error__inconsistent_stored_block_length[]; +extern const char wuffs_deflate__error__missing_end_of_block_code[]; +extern const char wuffs_deflate__error__no_huffman_codes[]; +extern const char wuffs_deflate__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_DEFLATE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 + +// ---------------- Struct Declarations + +typedef struct wuffs_deflate__decoder__struct wuffs_deflate__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_deflate__decoder__initialize( + wuffs_deflate__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_deflate__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_deflate__decoder* +wuffs_deflate__decoder__alloc(void); + +static inline wuffs_base__io_transformer* +wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer(void) { + return (wuffs_base__io_transformer*)(wuffs_deflate__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__io_transformer* +wuffs_deflate__decoder__upcast_as__wuffs_base__io_transformer( + wuffs_deflate__decoder* p) { + return (wuffs_base__io_transformer*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_deflate__decoder__add_history( + wuffs_deflate__decoder* self, + wuffs_base__slice_u8 a_hist); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_deflate__decoder__get_quirk( + const wuffs_deflate__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_deflate__decoder__set_quirk( + wuffs_deflate__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_deflate__decoder__history_retain_length( + const wuffs_deflate__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_deflate__decoder__workbuf_len( + const wuffs_deflate__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_deflate__decoder__transform_io( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_deflate__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__io_transformer; + wuffs_base__vtable null_vtable; + + uint32_t f_bits; + uint32_t f_n_bits; + uint64_t f_transformed_history_count; + uint32_t f_history_index; + uint32_t f_n_huffs_bits[2]; + bool f_end_of_block; + + uint32_t p_transform_io[1]; + uint32_t p_do_transform_io[1]; + uint32_t p_decode_blocks[1]; + uint32_t p_decode_uncompressed[1]; + uint32_t p_init_dynamic_huffman[1]; + wuffs_base__status (*choosy_decode_huffman_fast64)( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + uint32_t p_decode_huffman_slow[1]; + } private_impl; + + struct { + uint32_t f_huffs[2][1024]; + uint8_t f_history[33025]; + uint8_t f_code_lengths[320]; + + struct { + uint32_t v_final; + } s_decode_blocks[1]; + struct { + uint32_t v_length; + uint64_t scratch; + } s_decode_uncompressed[1]; + struct { + uint32_t v_bits; + uint32_t v_n_bits; + uint32_t v_n_lit; + uint32_t v_n_dist; + uint32_t v_n_clen; + uint32_t v_i; + uint32_t v_mask; + uint32_t v_n_extra_bits; + uint8_t v_rep_symbol; + uint32_t v_rep_count; + } s_init_dynamic_huffman[1]; + struct { + uint32_t v_bits; + uint32_t v_n_bits; + uint32_t v_table_entry_n_bits; + uint32_t v_lmask; + uint32_t v_dmask; + uint32_t v_redir_top; + uint32_t v_redir_mask; + uint32_t v_length; + uint32_t v_dist_minus_1; + uint64_t scratch; + } s_decode_huffman_slow[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_deflate__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_deflate__decoder__alloc()); + } + + static inline wuffs_base__io_transformer::unique_ptr + alloc_as__wuffs_base__io_transformer() { + return wuffs_base__io_transformer::unique_ptr( + wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_deflate__decoder__struct() = delete; + wuffs_deflate__decoder__struct(const wuffs_deflate__decoder__struct&) = delete; + wuffs_deflate__decoder__struct& operator=( + const wuffs_deflate__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_deflate__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__io_transformer* + upcast_as__wuffs_base__io_transformer() { + return (wuffs_base__io_transformer*)this; + } + + inline wuffs_base__empty_struct + add_history( + wuffs_base__slice_u8 a_hist) { + return wuffs_deflate__decoder__add_history(this, a_hist); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_deflate__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_deflate__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_deflate__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_deflate__decoder__workbuf_len(this); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_deflate__decoder__transform_io(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_deflate__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_gif__error__bad_lzw_code[]; +extern const char wuffs_gif__error__bad_extension_label[]; +extern const char wuffs_gif__error__bad_frame_size[]; +extern const char wuffs_gif__error__bad_graphic_control[]; +extern const char wuffs_gif__error__bad_header[]; +extern const char wuffs_gif__error__bad_literal_width[]; +extern const char wuffs_gif__error__bad_palette[]; +extern const char wuffs_gif__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_GIF__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328 + +#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329 + +#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330 + +#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331 + +#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332 + +#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333 + +#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334 + +// ---------------- Struct Declarations + +typedef struct wuffs_gif__decoder__struct wuffs_gif__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_gif__decoder__initialize( + wuffs_gif__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_gif__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_gif__decoder* +wuffs_gif__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_gif__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_gif__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_gif__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__get_quirk( + const wuffs_gif__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__set_quirk( + wuffs_gif__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_image_config( + wuffs_gif__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_gif__decoder__set_report_metadata( + wuffs_gif__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__tell_me_more( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_gif__decoder__num_animation_loops( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__num_decoded_frame_configs( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__num_decoded_frames( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_gif__decoder__frame_dirty_rect( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__history_retain_length( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_gif__decoder__workbuf_len( + const wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__restart_frame( + wuffs_gif__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_frame_config( + wuffs_gif__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_frame( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_gif__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint8_t f_call_sequence; + bool f_report_metadata_iccp; + bool f_report_metadata_xmp; + uint32_t f_metadata_fourcc; + uint64_t f_metadata_io_position; + bool f_quirks[7]; + bool f_delayed_num_decoded_frames; + bool f_seen_header; + bool f_ignored_but_affects_benchmarks; + bool f_has_global_palette; + uint8_t f_interlace; + bool f_seen_num_animation_loops_value; + uint32_t f_num_animation_loops_value; + uint32_t f_background_color_u32_argb_premul; + uint32_t f_black_color_u32_argb_premul; + bool f_gc_has_transparent_index; + uint8_t f_gc_transparent_index; + uint8_t f_gc_disposal; + uint64_t f_gc_duration; + uint64_t f_frame_config_io_position; + uint64_t f_num_decoded_frame_configs_value; + uint64_t f_num_decoded_frames_value; + uint32_t f_frame_rect_x0; + uint32_t f_frame_rect_y0; + uint32_t f_frame_rect_x1; + uint32_t f_frame_rect_y1; + uint32_t f_dst_x; + uint32_t f_dst_y; + uint32_t f_dirty_max_excl_y; + uint64_t f_compressed_ri; + uint64_t f_compressed_wi; + wuffs_base__pixel_swizzler f_swizzler; + uint32_t f_lzw_pending_literal_width_plus_one; + uint32_t f_lzw_literal_width; + uint32_t f_lzw_clear_code; + uint32_t f_lzw_end_code; + uint32_t f_lzw_save_code; + uint32_t f_lzw_prev_code; + uint32_t f_lzw_width; + uint32_t f_lzw_bits; + uint32_t f_lzw_n_bits; + uint32_t f_lzw_output_ri; + uint32_t f_lzw_output_wi; + uint32_t f_lzw_read_from_return_value; + uint16_t f_lzw_prefixes[4096]; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_tell_me_more[1]; + uint32_t p_do_tell_me_more[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_skip_frame[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + uint32_t p_decode_up_to_id_part1[1]; + uint32_t p_decode_header[1]; + uint32_t p_decode_lsd[1]; + uint32_t p_decode_extension[1]; + uint32_t p_skip_blocks[1]; + uint32_t p_decode_ae[1]; + uint32_t p_decode_gc[1]; + uint32_t p_decode_id_part0[1]; + uint32_t p_decode_id_part1[1]; + uint32_t p_decode_id_part2[1]; + } private_impl; + + struct { + uint8_t f_compressed[4096]; + uint8_t f_palettes[2][1024]; + uint8_t f_dst_palette[1024]; + uint8_t f_lzw_suffixes[4096][8]; + uint16_t f_lzw_lm1s[4096]; + uint8_t f_lzw_output[8199]; + + struct { + uint32_t v_background_color; + } s_do_decode_frame_config[1]; + struct { + uint64_t scratch; + } s_skip_frame[1]; + struct { + uint8_t v_c[6]; + uint32_t v_i; + } s_decode_header[1]; + struct { + uint8_t v_flags; + uint8_t v_background_color_index; + uint32_t v_num_palette_entries; + uint32_t v_i; + uint64_t scratch; + } s_decode_lsd[1]; + struct { + uint64_t scratch; + } s_skip_blocks[1]; + struct { + uint8_t v_block_size; + bool v_is_animexts; + bool v_is_netscape; + bool v_is_iccp; + bool v_is_xmp; + uint64_t scratch; + } s_decode_ae[1]; + struct { + uint64_t scratch; + } s_decode_gc[1]; + struct { + uint64_t scratch; + } s_decode_id_part0[1]; + struct { + uint8_t v_which_palette; + uint32_t v_num_palette_entries; + uint32_t v_i; + uint64_t scratch; + } s_decode_id_part1[1]; + struct { + uint64_t v_block_size; + bool v_need_block_size; + uint64_t scratch; + } s_decode_id_part2[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_gif__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_gif__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_gif__decoder__struct() = delete; + wuffs_gif__decoder__struct(const wuffs_gif__decoder__struct&) = delete; + wuffs_gif__decoder__struct& operator=( + const wuffs_gif__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_gif__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_gif__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_gif__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_gif__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_gif__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_gif__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_gif__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_gif__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_gif__decoder__num_decoded_frames(this); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_gif__decoder__frame_dirty_rect(this); + } + + inline uint64_t + history_retain_length() const { + return wuffs_gif__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_gif__decoder__workbuf_len(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_gif__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_gif__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_gif__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + +#endif // __cplusplus +}; // struct wuffs_gif__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_gzip__error__bad_checksum[]; +extern const char wuffs_gzip__error__bad_compression_method[]; +extern const char wuffs_gzip__error__bad_encoding_flags[]; +extern const char wuffs_gzip__error__bad_header[]; +extern const char wuffs_gzip__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_GZIP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 + +// ---------------- Struct Declarations + +typedef struct wuffs_gzip__decoder__struct wuffs_gzip__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_gzip__decoder__initialize( + wuffs_gzip__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_gzip__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_gzip__decoder* +wuffs_gzip__decoder__alloc(void); + +static inline wuffs_base__io_transformer* +wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer(void) { + return (wuffs_base__io_transformer*)(wuffs_gzip__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__io_transformer* +wuffs_gzip__decoder__upcast_as__wuffs_base__io_transformer( + wuffs_gzip__decoder* p) { + return (wuffs_base__io_transformer*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gzip__decoder__get_quirk( + const wuffs_gzip__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gzip__decoder__set_quirk( + wuffs_gzip__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gzip__decoder__history_retain_length( + const wuffs_gzip__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_gzip__decoder__workbuf_len( + const wuffs_gzip__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gzip__decoder__transform_io( + wuffs_gzip__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_gzip__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__io_transformer; + wuffs_base__vtable null_vtable; + + bool f_ignore_checksum; + + uint32_t p_transform_io[1]; + uint32_t p_do_transform_io[1]; + } private_impl; + + struct { + wuffs_crc32__ieee_hasher f_checksum; + wuffs_deflate__decoder f_flate; + + struct { + uint8_t v_flags; + uint32_t v_checksum_got; + uint32_t v_decoded_length_got; + uint32_t v_checksum_want; + uint64_t scratch; + } s_do_transform_io[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_gzip__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_gzip__decoder__alloc()); + } + + static inline wuffs_base__io_transformer::unique_ptr + alloc_as__wuffs_base__io_transformer() { + return wuffs_base__io_transformer::unique_ptr( + wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_gzip__decoder__struct() = delete; + wuffs_gzip__decoder__struct(const wuffs_gzip__decoder__struct&) = delete; + wuffs_gzip__decoder__struct& operator=( + const wuffs_gzip__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_gzip__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__io_transformer* + upcast_as__wuffs_base__io_transformer() { + return (wuffs_base__io_transformer*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_gzip__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_gzip__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_gzip__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_gzip__decoder__workbuf_len(this); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_gzip__decoder__transform_io(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_gzip__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_jpeg__error__bad_dht_marker[]; +extern const char wuffs_jpeg__error__bad_dqt_marker[]; +extern const char wuffs_jpeg__error__bad_dri_marker[]; +extern const char wuffs_jpeg__error__bad_sof_marker[]; +extern const char wuffs_jpeg__error__bad_sos_marker[]; +extern const char wuffs_jpeg__error__bad_header[]; +extern const char wuffs_jpeg__error__bad_marker[]; +extern const char wuffs_jpeg__error__missing_huffman_table[]; +extern const char wuffs_jpeg__error__missing_quantization_table[]; +extern const char wuffs_jpeg__error__truncated_input[]; +extern const char wuffs_jpeg__error__unsupported_arithmetic_coding[]; +extern const char wuffs_jpeg__error__unsupported_color_model[]; +extern const char wuffs_jpeg__error__unsupported_fractional_sampling[]; +extern const char wuffs_jpeg__error__unsupported_hierarchical_coding[]; +extern const char wuffs_jpeg__error__unsupported_implicit_height[]; +extern const char wuffs_jpeg__error__unsupported_lossless_coding[]; +extern const char wuffs_jpeg__error__unsupported_marker[]; +extern const char wuffs_jpeg__error__unsupported_precision_12_bits[]; +extern const char wuffs_jpeg__error__unsupported_precision_16_bits[]; +extern const char wuffs_jpeg__error__unsupported_precision[]; +extern const char wuffs_jpeg__error__unsupported_scan_count[]; + +// ---------------- Public Consts + +#define WUFFS_JPEG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 51552191232 + +// ---------------- Struct Declarations + +typedef struct wuffs_jpeg__decoder__struct wuffs_jpeg__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_jpeg__decoder__initialize( + wuffs_jpeg__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_jpeg__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_jpeg__decoder* +wuffs_jpeg__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_jpeg__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_jpeg__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_jpeg__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_jpeg__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__get_quirk( + const wuffs_jpeg__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__set_quirk( + wuffs_jpeg__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_image_config( + wuffs_jpeg__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_frame_config( + wuffs_jpeg__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_frame( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_jpeg__decoder__frame_dirty_rect( + const wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_jpeg__decoder__num_animation_loops( + const wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__num_decoded_frame_configs( + const wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__num_decoded_frames( + const wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__restart_frame( + wuffs_jpeg__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_jpeg__decoder__set_report_metadata( + wuffs_jpeg__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__tell_me_more( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__history_retain_length( + const wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_jpeg__decoder__workbuf_len( + const wuffs_jpeg__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_jpeg__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint32_t f_width_in_mcus; + uint32_t f_height_in_mcus; + uint8_t f_call_sequence; + bool f_test_only_interrupt_decode_mcu; + bool f_is_jfif; + uint8_t f_is_adobe; + bool f_is_rgb_or_cmyk; + uint8_t f_sof_marker; + uint8_t f_next_restart_marker; + uint8_t f_max_incl_components_h; + uint8_t f_max_incl_components_v; + uint32_t f_num_components; + uint8_t f_components_c[4]; + uint8_t f_components_h[4]; + uint8_t f_components_v[4]; + uint8_t f_components_tq[4]; + uint32_t f_components_workbuf_widths[4]; + uint32_t f_components_workbuf_heights[4]; + uint64_t f_components_workbuf_offsets[9]; + uint32_t f_scan_count; + uint32_t f_scan_num_components; + uint8_t f_scan_comps_cselector[4]; + uint8_t f_scan_comps_td[4]; + uint8_t f_scan_comps_ta[4]; + uint8_t f_scan_ss; + uint8_t f_scan_se; + uint8_t f_scan_ah; + uint8_t f_scan_al; + uint32_t f_scan_width_in_mcus; + uint32_t f_scan_height_in_mcus; + uint8_t f_scan_comps_bx_offset[16]; + uint8_t f_scan_comps_by_offset[16]; + uint32_t f_mcu_num_blocks; + uint32_t f_mcu_current_block; + uint32_t f_mcu_zig_index; + uint8_t f_mcu_blocks_sselector[16]; + uint64_t f_mcu_blocks_offset[10]; + uint32_t f_mcu_blocks_mx_mul[10]; + uint32_t f_mcu_blocks_my_mul[10]; + uint8_t f_mcu_blocks_dc_hselector[10]; + uint8_t f_mcu_blocks_ac_hselector[10]; + uint16_t f_mcu_previous_dc_values[4]; + uint8_t f_block_smoothing_lowest_scan_al[4][10]; + uint16_t f_block_smoothing_dc_values[5][5]; + uint32_t f_block_smoothing_mx_max_incl; + uint32_t f_block_smoothing_my_max_incl; + uint16_t f_restart_interval; + uint16_t f_saved_restart_interval; + uint16_t f_restarts_remaining; + uint16_t f_eob_run; + uint64_t f_frame_config_io_position; + uint32_t f_payload_length; + bool f_seen_dqt[4]; + bool f_saved_seen_dqt[4]; + bool f_seen_dht[8]; + uint64_t f_bitstream_bits; + uint32_t f_bitstream_n_bits; + uint32_t f_bitstream_ri; + uint32_t f_bitstream_wi; + bool f_bitstream_is_closed; + uint32_t f_bitstream_padding; + uint16_t f_quant_tables[4][64]; + uint16_t f_saved_quant_tables[4][64]; + uint8_t f_huff_tables_symbols[8][256]; + uint32_t f_huff_tables_slow[8][16]; + uint16_t f_huff_tables_fast[8][256]; + wuffs_base__pixel_swizzler f_swizzler; + + wuffs_base__empty_struct (*choosy_decode_idct)( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q); + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_dqt[1]; + uint32_t p_decode_dri[1]; + uint32_t p_decode_appn[1]; + uint32_t p_decode_sof[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + uint32_t p_decode_dht[1]; + uint32_t p_decode_sos[1]; + uint32_t p_prepare_scan[1]; + wuffs_base__empty_struct (*choosy_load_mcu_blocks_for_single_component)( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel); + uint32_t p_skip_past_the_next_restart_marker[1]; + uint32_t (*choosy_decode_mcu)( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + } private_impl; + + struct { + uint8_t f_bitstream_buffer[2048]; + uint16_t f_mcu_blocks[10][64]; + uint8_t f_swizzle_ycck_scratch_buffer_2k[2048]; + uint8_t f_dht_temp_counts[16]; + uint8_t f_dht_temp_bit_lengths[256]; + uint16_t f_dht_temp_bit_strings[256]; + uint8_t f_dst_palette[1024]; + + struct { + uint8_t v_marker; + uint64_t scratch; + } s_do_decode_image_config[1]; + struct { + uint8_t v_q; + uint32_t v_i; + } s_decode_dqt[1]; + struct { + uint64_t scratch; + } s_decode_dri[1]; + struct { + uint64_t scratch; + } s_decode_appn[1]; + struct { + uint32_t v_i; + uint64_t scratch; + } s_decode_sof[1]; + struct { + uint8_t v_marker; + uint64_t scratch; + } s_do_decode_frame[1]; + struct { + uint8_t v_tc4_th; + uint32_t v_total_count; + uint32_t v_i; + } s_decode_dht[1]; + struct { + uint32_t v_my; + uint32_t v_mx; + } s_decode_sos[1]; + struct { + uint32_t v_i; + uint64_t scratch; + } s_prepare_scan[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_jpeg__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_jpeg__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_jpeg__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_jpeg__decoder__struct() = delete; + wuffs_jpeg__decoder__struct(const wuffs_jpeg__decoder__struct&) = delete; + wuffs_jpeg__decoder__struct& operator=( + const wuffs_jpeg__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_jpeg__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_jpeg__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_jpeg__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_jpeg__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_jpeg__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_jpeg__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_jpeg__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_jpeg__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_jpeg__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_jpeg__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_jpeg__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_jpeg__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_jpeg__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_jpeg__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_jpeg__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_jpeg__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_json__error__bad_c0_control_code[]; +extern const char wuffs_json__error__bad_utf_8[]; +extern const char wuffs_json__error__bad_backslash_escape[]; +extern const char wuffs_json__error__bad_input[]; +extern const char wuffs_json__error__bad_new_line_in_a_string[]; +extern const char wuffs_json__error__bad_quirk_combination[]; +extern const char wuffs_json__error__unsupported_number_length[]; +extern const char wuffs_json__error__unsupported_recursion_depth[]; + +// ---------------- Public Consts + +#define WUFFS_JSON__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024 + +#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1 + +#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100 + +#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489 + +#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490 + +#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491 + +#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492 + +#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493 + +#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494 + +#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495 + +#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496 + +#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497 + +#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498 + +#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499 + +#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500 + +// ---------------- Struct Declarations + +typedef struct wuffs_json__decoder__struct wuffs_json__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_json__decoder__initialize( + wuffs_json__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_json__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_json__decoder* +wuffs_json__decoder__alloc(void); + +static inline wuffs_base__token_decoder* +wuffs_json__decoder__alloc_as__wuffs_base__token_decoder(void) { + return (wuffs_base__token_decoder*)(wuffs_json__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__token_decoder* +wuffs_json__decoder__upcast_as__wuffs_base__token_decoder( + wuffs_json__decoder* p) { + return (wuffs_base__token_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_json__decoder__get_quirk( + const wuffs_json__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_json__decoder__set_quirk( + wuffs_json__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_json__decoder__history_retain_length( + const wuffs_json__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_json__decoder__workbuf_len( + const wuffs_json__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_json__decoder__decode_tokens( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_json__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__token_decoder; + wuffs_base__vtable null_vtable; + + bool f_quirks[21]; + bool f_allow_leading_ars; + bool f_allow_leading_ubom; + bool f_end_of_data; + uint8_t f_trailer_stop; + uint8_t f_comment_type; + + uint32_t p_decode_tokens[1]; + uint32_t p_decode_leading[1]; + uint32_t p_decode_comment[1]; + uint32_t p_decode_inf_nan[1]; + uint32_t p_decode_trailer[1]; + } private_impl; + + struct { + uint32_t f_stack[32]; + + struct { + uint32_t v_depth; + uint32_t v_expect; + uint32_t v_expect_after_value; + } s_decode_tokens[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_json__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_json__decoder__alloc()); + } + + static inline wuffs_base__token_decoder::unique_ptr + alloc_as__wuffs_base__token_decoder() { + return wuffs_base__token_decoder::unique_ptr( + wuffs_json__decoder__alloc_as__wuffs_base__token_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_json__decoder__struct() = delete; + wuffs_json__decoder__struct(const wuffs_json__decoder__struct&) = delete; + wuffs_json__decoder__struct& operator=( + const wuffs_json__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_json__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__token_decoder* + upcast_as__wuffs_base__token_decoder() { + return (wuffs_base__token_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_json__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_json__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_json__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_json__decoder__workbuf_len(this); + } + + inline wuffs_base__status + decode_tokens( + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_json__decoder__decode_tokens(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_json__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_lzw__error__bad_code[]; +extern const char wuffs_lzw__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_LZW__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624 + +// ---------------- Struct Declarations + +typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_lzw__decoder__initialize( + wuffs_lzw__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_lzw__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_lzw__decoder* +wuffs_lzw__decoder__alloc(void); + +static inline wuffs_base__io_transformer* +wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(void) { + return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__io_transformer* +wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer( + wuffs_lzw__decoder* p) { + return (wuffs_base__io_transformer*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_lzw__decoder__get_quirk( + const wuffs_lzw__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_lzw__decoder__set_quirk( + wuffs_lzw__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_lzw__decoder__history_retain_length( + const wuffs_lzw__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_lzw__decoder__workbuf_len( + const wuffs_lzw__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_lzw__decoder__transform_io( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8 +wuffs_lzw__decoder__flush( + wuffs_lzw__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_lzw__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__io_transformer; + wuffs_base__vtable null_vtable; + + uint32_t f_pending_literal_width_plus_one; + uint32_t f_literal_width; + uint32_t f_clear_code; + uint32_t f_end_code; + uint32_t f_save_code; + uint32_t f_prev_code; + uint32_t f_width; + uint32_t f_bits; + uint32_t f_n_bits; + uint32_t f_output_ri; + uint32_t f_output_wi; + uint32_t f_read_from_return_value; + uint16_t f_prefixes[4096]; + + uint32_t p_transform_io[1]; + uint32_t p_write_to[1]; + } private_impl; + + struct { + uint8_t f_suffixes[4096][8]; + uint16_t f_lm1s[4096]; + uint8_t f_output[8199]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_lzw__decoder__alloc()); + } + + static inline wuffs_base__io_transformer::unique_ptr + alloc_as__wuffs_base__io_transformer() { + return wuffs_base__io_transformer::unique_ptr( + wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_lzw__decoder__struct() = delete; + wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete; + wuffs_lzw__decoder__struct& operator=( + const wuffs_lzw__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_lzw__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__io_transformer* + upcast_as__wuffs_base__io_transformer() { + return (wuffs_base__io_transformer*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_lzw__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_lzw__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_lzw__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_lzw__decoder__workbuf_len(this); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf); + } + + inline wuffs_base__slice_u8 + flush() { + return wuffs_lzw__decoder__flush(this); + } + +#endif // __cplusplus +}; // struct wuffs_lzw__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_netpbm__error__bad_header[]; +extern const char wuffs_netpbm__error__truncated_input[]; +extern const char wuffs_netpbm__error__unsupported_netpbm_file[]; + +// ---------------- Public Consts + +#define WUFFS_NETPBM__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_netpbm__decoder__initialize( + wuffs_netpbm__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_netpbm__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_netpbm__decoder* +wuffs_netpbm__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_netpbm__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__get_quirk( + const wuffs_netpbm__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__set_quirk( + wuffs_netpbm__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_image_config( + wuffs_netpbm__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_frame_config( + wuffs_netpbm__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_frame( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_netpbm__decoder__frame_dirty_rect( + const wuffs_netpbm__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_netpbm__decoder__num_animation_loops( + const wuffs_netpbm__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__num_decoded_frame_configs( + const wuffs_netpbm__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__num_decoded_frames( + const wuffs_netpbm__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__restart_frame( + wuffs_netpbm__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_netpbm__decoder__set_report_metadata( + wuffs_netpbm__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__tell_me_more( + wuffs_netpbm__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__history_retain_length( + const wuffs_netpbm__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_netpbm__decoder__workbuf_len( + const wuffs_netpbm__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_netpbm__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_pixfmt; + uint32_t f_width; + uint32_t f_height; + uint32_t f_max_value; + uint8_t f_call_sequence; + uint64_t f_frame_config_io_position; + uint32_t f_dst_x; + uint32_t f_dst_y; + wuffs_base__pixel_swizzler f_swizzler; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_netpbm__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_netpbm__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_netpbm__decoder__struct() = delete; + wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete; + wuffs_netpbm__decoder__struct& operator=( + const wuffs_netpbm__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_netpbm__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_netpbm__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_netpbm__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_netpbm__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_netpbm__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_netpbm__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_netpbm__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_netpbm__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_netpbm__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_nie__error__bad_header[]; +extern const char wuffs_nie__error__truncated_input[]; +extern const char wuffs_nie__error__unsupported_nie_file[]; + +// ---------------- Public Consts + +#define WUFFS_NIE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_nie__decoder__initialize( + wuffs_nie__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_nie__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_nie__decoder* +wuffs_nie__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_nie__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__get_quirk( + const wuffs_nie__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__set_quirk( + wuffs_nie__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_image_config( + wuffs_nie__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_frame_config( + wuffs_nie__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_frame( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_nie__decoder__frame_dirty_rect( + const wuffs_nie__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_nie__decoder__num_animation_loops( + const wuffs_nie__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__num_decoded_frame_configs( + const wuffs_nie__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__num_decoded_frames( + const wuffs_nie__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__restart_frame( + wuffs_nie__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_nie__decoder__set_report_metadata( + wuffs_nie__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__tell_me_more( + wuffs_nie__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__history_retain_length( + const wuffs_nie__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_nie__decoder__workbuf_len( + const wuffs_nie__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_nie__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_pixfmt; + uint32_t f_width; + uint32_t f_height; + uint8_t f_call_sequence; + uint32_t f_dst_x; + uint32_t f_dst_y; + wuffs_base__pixel_swizzler f_swizzler; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + } private_impl; + + struct { + struct { + uint64_t scratch; + } s_do_decode_image_config[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_nie__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_nie__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_nie__decoder__struct() = delete; + wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete; + wuffs_nie__decoder__struct& operator=( + const wuffs_nie__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_nie__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_nie__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_nie__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_nie__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_nie__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_nie__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_nie__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_nie__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_nie__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_nie__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_zlib__note__dictionary_required[]; +extern const char wuffs_zlib__error__bad_checksum[]; +extern const char wuffs_zlib__error__bad_compression_method[]; +extern const char wuffs_zlib__error__bad_compression_window_size[]; +extern const char wuffs_zlib__error__bad_parity_check[]; +extern const char wuffs_zlib__error__incorrect_dictionary[]; +extern const char wuffs_zlib__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976 + +#define WUFFS_ZLIB__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 + +// ---------------- Struct Declarations + +typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_zlib__decoder__initialize( + wuffs_zlib__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_zlib__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_zlib__decoder* +wuffs_zlib__decoder__alloc(void); + +static inline wuffs_base__io_transformer* +wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(void) { + return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__io_transformer* +wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer( + wuffs_zlib__decoder* p) { + return (wuffs_base__io_transformer*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_zlib__decoder__dictionary_id( + const wuffs_zlib__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_zlib__decoder__add_dictionary( + wuffs_zlib__decoder* self, + wuffs_base__slice_u8 a_dict); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_zlib__decoder__get_quirk( + const wuffs_zlib__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_zlib__decoder__set_quirk( + wuffs_zlib__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_zlib__decoder__history_retain_length( + const wuffs_zlib__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_zlib__decoder__workbuf_len( + const wuffs_zlib__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_zlib__decoder__transform_io( + wuffs_zlib__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_zlib__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__io_transformer; + wuffs_base__vtable null_vtable; + + bool f_bad_call_sequence; + bool f_header_complete; + bool f_got_dictionary; + bool f_want_dictionary; + bool f_quirks[1]; + bool f_ignore_checksum; + uint32_t f_dict_id_got; + uint32_t f_dict_id_want; + + uint32_t p_transform_io[1]; + uint32_t p_do_transform_io[1]; + } private_impl; + + struct { + wuffs_adler32__hasher f_checksum; + wuffs_adler32__hasher f_dict_id_hasher; + wuffs_deflate__decoder f_flate; + + struct { + uint32_t v_checksum_got; + uint64_t scratch; + } s_do_transform_io[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_zlib__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_zlib__decoder__alloc()); + } + + static inline wuffs_base__io_transformer::unique_ptr + alloc_as__wuffs_base__io_transformer() { + return wuffs_base__io_transformer::unique_ptr( + wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_zlib__decoder__struct() = delete; + wuffs_zlib__decoder__struct(const wuffs_zlib__decoder__struct&) = delete; + wuffs_zlib__decoder__struct& operator=( + const wuffs_zlib__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_zlib__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__io_transformer* + upcast_as__wuffs_base__io_transformer() { + return (wuffs_base__io_transformer*)this; + } + + inline uint32_t + dictionary_id() const { + return wuffs_zlib__decoder__dictionary_id(this); + } + + inline wuffs_base__empty_struct + add_dictionary( + wuffs_base__slice_u8 a_dict) { + return wuffs_zlib__decoder__add_dictionary(this, a_dict); + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_zlib__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_zlib__decoder__set_quirk(this, a_key, a_value); + } + + inline uint64_t + history_retain_length() const { + return wuffs_zlib__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_zlib__decoder__workbuf_len(this); + } + + inline wuffs_base__status + transform_io( + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + return wuffs_zlib__decoder__transform_io(this, a_dst, a_src, a_workbuf); + } + +#endif // __cplusplus +}; // struct wuffs_zlib__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_png__error__bad_animation_sequence_number[]; +extern const char wuffs_png__error__bad_checksum[]; +extern const char wuffs_png__error__bad_chunk[]; +extern const char wuffs_png__error__bad_filter[]; +extern const char wuffs_png__error__bad_header[]; +extern const char wuffs_png__error__bad_text_chunk_not_latin_1[]; +extern const char wuffs_png__error__missing_palette[]; +extern const char wuffs_png__error__truncated_input[]; +extern const char wuffs_png__error__unsupported_cgbi_extension[]; +extern const char wuffs_png__error__unsupported_png_compression_method[]; +extern const char wuffs_png__error__unsupported_png_file[]; + +// ---------------- Public Consts + +#define WUFFS_PNG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015 + +#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8 + +// ---------------- Struct Declarations + +typedef struct wuffs_png__decoder__struct wuffs_png__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_png__decoder__initialize( + wuffs_png__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_png__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_png__decoder* +wuffs_png__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_png__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_png__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_png__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_png__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__get_quirk( + const wuffs_png__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__set_quirk( + wuffs_png__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_image_config( + wuffs_png__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_frame_config( + wuffs_png__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_frame( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_png__decoder__frame_dirty_rect( + const wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_png__decoder__num_animation_loops( + const wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__num_decoded_frame_configs( + const wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__num_decoded_frames( + const wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__restart_frame( + wuffs_png__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_png__decoder__set_report_metadata( + wuffs_png__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__tell_me_more( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__history_retain_length( + const wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_png__decoder__workbuf_len( + const wuffs_png__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_png__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint64_t f_pass_bytes_per_row; + uint64_t f_workbuf_wi; + uint64_t f_workbuf_hist_pos_base; + uint64_t f_overall_workbuf_length; + uint64_t f_pass_workbuf_length; + uint8_t f_call_sequence; + bool f_report_metadata_chrm; + bool f_report_metadata_exif; + bool f_report_metadata_gama; + bool f_report_metadata_iccp; + bool f_report_metadata_kvp; + bool f_report_metadata_srgb; + bool f_ignore_checksum; + uint8_t f_depth; + uint8_t f_color_type; + uint8_t f_filter_distance; + uint8_t f_interlace_pass; + bool f_seen_actl; + bool f_seen_chrm; + bool f_seen_fctl; + bool f_seen_exif; + bool f_seen_gama; + bool f_seen_iccp; + bool f_seen_idat; + bool f_seen_ihdr; + bool f_seen_plte; + bool f_seen_srgb; + bool f_seen_trns; + bool f_metadata_is_zlib_compressed; + bool f_zlib_is_dirty; + uint32_t f_chunk_type; + uint8_t f_chunk_type_array[4]; + uint32_t f_chunk_length; + uint64_t f_remap_transparency; + uint32_t f_dst_pixfmt; + uint32_t f_src_pixfmt; + uint32_t f_num_animation_frames_value; + uint32_t f_num_animation_loops_value; + uint32_t f_num_decoded_frame_configs_value; + uint32_t f_num_decoded_frames_value; + uint32_t f_frame_rect_x0; + uint32_t f_frame_rect_y0; + uint32_t f_frame_rect_x1; + uint32_t f_frame_rect_y1; + uint32_t f_first_rect_x0; + uint32_t f_first_rect_y0; + uint32_t f_first_rect_x1; + uint32_t f_first_rect_y1; + uint64_t f_frame_config_io_position; + uint64_t f_first_config_io_position; + uint64_t f_frame_duration; + uint64_t f_first_duration; + uint8_t f_frame_disposal; + uint8_t f_first_disposal; + bool f_frame_overwrite_instead_of_blend; + bool f_first_overwrite_instead_of_blend; + uint32_t f_next_animation_seq_num; + uint32_t f_metadata_flavor; + uint32_t f_metadata_fourcc; + uint64_t f_metadata_x; + uint64_t f_metadata_y; + uint64_t f_metadata_z; + uint32_t f_ztxt_ri; + uint32_t f_ztxt_wi; + uint64_t f_ztxt_hist_pos; + wuffs_base__pixel_swizzler f_swizzler; + + wuffs_base__empty_struct (*choosy_filter_1)( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); + wuffs_base__empty_struct (*choosy_filter_3)( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + wuffs_base__empty_struct (*choosy_filter_4)( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_ihdr[1]; + uint32_t p_decode_other_chunk[1]; + uint32_t p_decode_actl[1]; + uint32_t p_decode_chrm[1]; + uint32_t p_decode_fctl[1]; + uint32_t p_decode_gama[1]; + uint32_t p_decode_iccp[1]; + uint32_t p_decode_plte[1]; + uint32_t p_decode_srgb[1]; + uint32_t p_decode_trns[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_skip_frame[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + uint32_t p_decode_pass[1]; + uint32_t p_tell_me_more[1]; + uint32_t p_do_tell_me_more[1]; + wuffs_base__status (*choosy_filter_and_swizzle)( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + } private_impl; + + struct { + wuffs_crc32__ieee_hasher f_crc32; + wuffs_zlib__decoder f_zlib; + uint8_t f_dst_palette[1024]; + uint8_t f_src_palette[1024]; + + struct { + uint32_t v_checksum_have; + uint64_t scratch; + } s_do_decode_image_config[1]; + struct { + uint64_t scratch; + } s_decode_ihdr[1]; + struct { + uint64_t scratch; + } s_decode_other_chunk[1]; + struct { + uint64_t scratch; + } s_decode_actl[1]; + struct { + uint64_t scratch; + } s_decode_chrm[1]; + struct { + uint32_t v_x0; + uint32_t v_x1; + uint32_t v_y1; + uint64_t scratch; + } s_decode_fctl[1]; + struct { + uint64_t scratch; + } s_decode_gama[1]; + struct { + uint32_t v_num_entries; + uint32_t v_i; + uint64_t scratch; + } s_decode_plte[1]; + struct { + uint32_t v_i; + uint32_t v_n; + uint64_t scratch; + } s_decode_trns[1]; + struct { + uint64_t scratch; + } s_do_decode_frame_config[1]; + struct { + uint64_t scratch; + } s_skip_frame[1]; + struct { + uint64_t scratch; + } s_do_decode_frame[1]; + struct { + uint64_t scratch; + } s_decode_pass[1]; + struct { + wuffs_base__status v_zlib_status; + uint64_t scratch; + } s_do_tell_me_more[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_png__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_png__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_png__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_png__decoder__struct() = delete; + wuffs_png__decoder__struct(const wuffs_png__decoder__struct&) = delete; + wuffs_png__decoder__struct& operator=( + const wuffs_png__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_png__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_png__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_png__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_png__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_png__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_png__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_png__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_png__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_png__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_png__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_png__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_png__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_png__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_png__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_png__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_png__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_tga__error__bad_header[]; +extern const char wuffs_tga__error__bad_run_length_encoding[]; +extern const char wuffs_tga__error__truncated_input[]; +extern const char wuffs_tga__error__unsupported_tga_file[]; + +// ---------------- Public Consts + +#define WUFFS_TGA__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_tga__decoder__initialize( + wuffs_tga__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_tga__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_tga__decoder* +wuffs_tga__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_tga__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__get_quirk( + const wuffs_tga__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__set_quirk( + wuffs_tga__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_image_config( + wuffs_tga__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_frame_config( + wuffs_tga__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_frame( + wuffs_tga__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_tga__decoder__frame_dirty_rect( + const wuffs_tga__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_tga__decoder__num_animation_loops( + const wuffs_tga__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__num_decoded_frame_configs( + const wuffs_tga__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__num_decoded_frames( + const wuffs_tga__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__restart_frame( + wuffs_tga__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_tga__decoder__set_report_metadata( + wuffs_tga__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__tell_me_more( + wuffs_tga__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__history_retain_length( + const wuffs_tga__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_tga__decoder__workbuf_len( + const wuffs_tga__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_tga__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint8_t f_call_sequence; + uint8_t f_header_id_length; + uint8_t f_header_color_map_type; + uint8_t f_header_image_type; + uint16_t f_header_color_map_first_entry_index; + uint16_t f_header_color_map_length; + uint8_t f_header_color_map_entry_size; + uint8_t f_header_pixel_depth; + uint8_t f_header_image_descriptor; + bool f_opaque; + uint32_t f_scratch_bytes_per_pixel; + uint32_t f_src_bytes_per_pixel; + uint32_t f_src_pixfmt; + uint64_t f_frame_config_io_position; + wuffs_base__pixel_swizzler f_swizzler; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + } private_impl; + + struct { + uint8_t f_dst_palette[1024]; + uint8_t f_src_palette[1024]; + uint8_t f_scratch[4]; + + struct { + uint32_t v_i; + uint64_t scratch; + } s_do_decode_image_config[1]; + struct { + uint64_t v_dst_bytes_per_pixel; + uint32_t v_dst_x; + uint32_t v_dst_y; + uint64_t v_mark; + uint32_t v_num_pixels32; + uint32_t v_lit_length; + uint32_t v_run_length; + uint64_t v_num_dst_bytes; + uint64_t scratch; + } s_do_decode_frame[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_tga__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_tga__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_tga__decoder__struct() = delete; + wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete; + wuffs_tga__decoder__struct& operator=( + const wuffs_tga__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_tga__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_tga__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_tga__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_tga__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_tga__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_tga__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_tga__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_tga__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_tga__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_tga__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +extern const char wuffs_wbmp__error__bad_header[]; +extern const char wuffs_wbmp__error__truncated_input[]; + +// ---------------- Public Consts + +#define WUFFS_WBMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0 + +#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 + +// ---------------- Struct Declarations + +typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_wbmp__decoder__initialize( + wuffs_wbmp__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_wbmp__decoder(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_wbmp__decoder* +wuffs_wbmp__decoder__alloc(void); + +static inline wuffs_base__image_decoder* +wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(void) { + return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__image_decoder* +wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder( + wuffs_wbmp__decoder* p) { + return (wuffs_base__image_decoder*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__get_quirk( + const wuffs_wbmp__decoder* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__set_quirk( + wuffs_wbmp__decoder* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_image_config( + wuffs_wbmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_frame_config( + wuffs_wbmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_frame( + wuffs_wbmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_wbmp__decoder__frame_dirty_rect( + const wuffs_wbmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_wbmp__decoder__num_animation_loops( + const wuffs_wbmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__num_decoded_frame_configs( + const wuffs_wbmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__num_decoded_frames( + const wuffs_wbmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__restart_frame( + wuffs_wbmp__decoder* self, + uint64_t a_index, + uint64_t a_io_position); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_wbmp__decoder__set_report_metadata( + wuffs_wbmp__decoder* self, + uint32_t a_fourcc, + bool a_report); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__tell_me_more( + wuffs_wbmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__history_retain_length( + const wuffs_wbmp__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_wbmp__decoder__workbuf_len( + const wuffs_wbmp__decoder* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_wbmp__decoder__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__image_decoder; + wuffs_base__vtable null_vtable; + + uint32_t f_width; + uint32_t f_height; + uint8_t f_call_sequence; + uint64_t f_frame_config_io_position; + wuffs_base__pixel_swizzler f_swizzler; + + uint32_t p_decode_image_config[1]; + uint32_t p_do_decode_image_config[1]; + uint32_t p_decode_frame_config[1]; + uint32_t p_do_decode_frame_config[1]; + uint32_t p_decode_frame[1]; + uint32_t p_do_decode_frame[1]; + } private_impl; + + struct { + struct { + uint32_t v_i; + uint32_t v_p; + } s_do_decode_image_config[1]; + struct { + uint64_t v_dst_bytes_per_pixel; + uint32_t v_dst_x; + uint32_t v_dst_y; + uint8_t v_src[1]; + uint8_t v_c; + } s_do_decode_frame[1]; + } private_data; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_wbmp__decoder__alloc()); + } + + static inline wuffs_base__image_decoder::unique_ptr + alloc_as__wuffs_base__image_decoder() { + return wuffs_base__image_decoder::unique_ptr( + wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_wbmp__decoder__struct() = delete; + wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete; + wuffs_wbmp__decoder__struct& operator=( + const wuffs_wbmp__decoder__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_wbmp__decoder__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__image_decoder* + upcast_as__wuffs_base__image_decoder() { + return (wuffs_base__image_decoder*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_wbmp__decoder__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__status + decode_image_config( + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame_config( + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src); + } + + inline wuffs_base__status + decode_frame( + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); + } + + inline wuffs_base__rect_ie_u32 + frame_dirty_rect() const { + return wuffs_wbmp__decoder__frame_dirty_rect(this); + } + + inline uint32_t + num_animation_loops() const { + return wuffs_wbmp__decoder__num_animation_loops(this); + } + + inline uint64_t + num_decoded_frame_configs() const { + return wuffs_wbmp__decoder__num_decoded_frame_configs(this); + } + + inline uint64_t + num_decoded_frames() const { + return wuffs_wbmp__decoder__num_decoded_frames(this); + } + + inline wuffs_base__status + restart_frame( + uint64_t a_index, + uint64_t a_io_position) { + return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position); + } + + inline wuffs_base__empty_struct + set_report_metadata( + uint32_t a_fourcc, + bool a_report) { + return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report); + } + + inline wuffs_base__status + tell_me_more( + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src); + } + + inline uint64_t + history_retain_length() const { + return wuffs_wbmp__decoder__history_retain_length(this); + } + + inline wuffs_base__range_ii_u64 + workbuf_len() const { + return wuffs_wbmp__decoder__workbuf_len(this); + } + +#endif // __cplusplus +}; // struct wuffs_wbmp__decoder__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +// ---------------- Public Consts + +// ---------------- Struct Declarations + +typedef struct wuffs_xxhash32__hasher__struct wuffs_xxhash32__hasher; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_xxhash32__hasher__initialize( + wuffs_xxhash32__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_xxhash32__hasher(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_xxhash32__hasher* +wuffs_xxhash32__hasher__alloc(void); + +static inline wuffs_base__hasher_u32* +wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32(void) { + return (wuffs_base__hasher_u32*)(wuffs_xxhash32__hasher__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__hasher_u32* +wuffs_xxhash32__hasher__upcast_as__wuffs_base__hasher_u32( + wuffs_xxhash32__hasher* p) { + return (wuffs_base__hasher_u32*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash32__hasher__get_quirk( + const wuffs_xxhash32__hasher* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_xxhash32__hasher__set_quirk( + wuffs_xxhash32__hasher* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_xxhash32__hasher__update( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_xxhash32__hasher__update_u32( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_xxhash32__hasher__checksum_u32( + const wuffs_xxhash32__hasher* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_xxhash32__hasher__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__hasher_u32; + wuffs_base__vtable null_vtable; + + uint32_t f_length_modulo_u32; + bool f_length_overflows_u32; + uint8_t f_padding0; + uint8_t f_padding1; + uint8_t f_buf_len; + uint8_t f_buf_data[16]; + uint32_t f_v0; + uint32_t f_v1; + uint32_t f_v2; + uint32_t f_v3; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_xxhash32__hasher, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_xxhash32__hasher__alloc()); + } + + static inline wuffs_base__hasher_u32::unique_ptr + alloc_as__wuffs_base__hasher_u32() { + return wuffs_base__hasher_u32::unique_ptr( + wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_xxhash32__hasher__struct() = delete; + wuffs_xxhash32__hasher__struct(const wuffs_xxhash32__hasher__struct&) = delete; + wuffs_xxhash32__hasher__struct& operator=( + const wuffs_xxhash32__hasher__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_xxhash32__hasher__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__hasher_u32* + upcast_as__wuffs_base__hasher_u32() { + return (wuffs_base__hasher_u32*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_xxhash32__hasher__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_xxhash32__hasher__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_xxhash32__hasher__update(this, a_x); + } + + inline uint32_t + update_u32( + wuffs_base__slice_u8 a_x) { + return wuffs_xxhash32__hasher__update_u32(this, a_x); + } + + inline uint32_t + checksum_u32() const { + return wuffs_xxhash32__hasher__checksum_u32(this); + } + +#endif // __cplusplus +}; // struct wuffs_xxhash32__hasher__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC) + +// ---------------- Status Codes + +// ---------------- Public Consts + +// ---------------- Struct Declarations + +typedef struct wuffs_xxhash64__hasher__struct wuffs_xxhash64__hasher; + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Public Initializer Prototypes + +// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, +// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". +// +// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. +// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_xxhash64__hasher__initialize( + wuffs_xxhash64__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options); + +size_t +sizeof__wuffs_xxhash64__hasher(void); + +// ---------------- Allocs + +// These functions allocate and initialize Wuffs structs. They return NULL if +// memory allocation fails. If they return non-NULL, there is no need to call +// wuffs_foo__bar__initialize, but the caller is responsible for eventually +// calling free on the returned pointer. That pointer is effectively a C++ +// std::unique_ptr<T, wuffs_unique_ptr_deleter>. + +wuffs_xxhash64__hasher* +wuffs_xxhash64__hasher__alloc(void); + +static inline wuffs_base__hasher_u64* +wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64(void) { + return (wuffs_base__hasher_u64*)(wuffs_xxhash64__hasher__alloc()); +} + +// ---------------- Upcasts + +static inline wuffs_base__hasher_u64* +wuffs_xxhash64__hasher__upcast_as__wuffs_base__hasher_u64( + wuffs_xxhash64__hasher* p) { + return (wuffs_base__hasher_u64*)p; +} + +// ---------------- Public Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__get_quirk( + const wuffs_xxhash64__hasher* self, + uint32_t a_key); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_xxhash64__hasher__set_quirk( + wuffs_xxhash64__hasher* self, + uint32_t a_key, + uint64_t a_value); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_xxhash64__hasher__update( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__update_u64( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__checksum_u64( + const wuffs_xxhash64__hasher* self); + +#ifdef __cplusplus +} // extern "C" +#endif + +// ---------------- Struct Definitions + +// These structs' fields, and the sizeof them, are private implementation +// details that aren't guaranteed to be stable across Wuffs versions. +// +// See https://en.wikipedia.org/wiki/Opaque_pointer#C + +#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +struct wuffs_xxhash64__hasher__struct { + // Do not access the private_impl's or private_data's fields directly. There + // is no API/ABI compatibility or safety guarantee if you do so. Instead, use + // the wuffs_foo__bar__baz functions. + // + // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct + // can be stack allocated when WUFFS_IMPLEMENTATION is defined. + + struct { + uint32_t magic; + uint32_t active_coroutine; + wuffs_base__vtable vtable_for__wuffs_base__hasher_u64; + wuffs_base__vtable null_vtable; + + uint64_t f_length_modulo_u64; + bool f_length_overflows_u64; + uint8_t f_padding0; + uint8_t f_padding1; + uint8_t f_padding2; + uint32_t f_buf_len; + uint8_t f_buf_data[32]; + uint64_t f_v0; + uint64_t f_v1; + uint64_t f_v2; + uint64_t f_v3; + } private_impl; + +#ifdef __cplusplus +#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + using unique_ptr = std::unique_ptr<wuffs_xxhash64__hasher, wuffs_unique_ptr_deleter>; + + // On failure, the alloc_etc functions return nullptr. They don't throw. + + static inline unique_ptr + alloc() { + return unique_ptr(wuffs_xxhash64__hasher__alloc()); + } + + static inline wuffs_base__hasher_u64::unique_ptr + alloc_as__wuffs_base__hasher_u64() { + return wuffs_base__hasher_u64::unique_ptr( + wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64()); + } +#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + // Disallow constructing or copying an object via standard C++ mechanisms, + // e.g. the "new" operator, as this struct is intentionally opaque. Its total + // size and field layout is not part of the public, stable, memory-safe API. + // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and + // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as + // their first argument) rather than tweaking bar.private_impl.qux fields. + // + // In C, we can just leave wuffs_foo__bar as an incomplete type (unless + // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in + // order to provide convenience methods. These forward on "this", so that you + // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". + wuffs_xxhash64__hasher__struct() = delete; + wuffs_xxhash64__hasher__struct(const wuffs_xxhash64__hasher__struct&) = delete; + wuffs_xxhash64__hasher__struct& operator=( + const wuffs_xxhash64__hasher__struct&) = delete; +#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) + +#if !defined(WUFFS_IMPLEMENTATION) + // As above, the size of the struct is not part of the public API, and unless + // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap + // allocated, not stack allocated. Its size is not intended to be known at + // compile time, but it is unfortunately divulged as a side effect of + // defining C++ convenience methods. Use "sizeof__T()", calling the function, + // instead of "sizeof T", invoking the operator. To make the two values + // different, so that passing the latter will be rejected by the initialize + // function, we add an arbitrary amount of dead weight. + uint8_t dead_weight[123000000]; // 123 MB. +#endif // !defined(WUFFS_IMPLEMENTATION) + + inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT + initialize( + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options) { + return wuffs_xxhash64__hasher__initialize( + this, sizeof_star_self, wuffs_version, options); + } + + inline wuffs_base__hasher_u64* + upcast_as__wuffs_base__hasher_u64() { + return (wuffs_base__hasher_u64*)this; + } + + inline uint64_t + get_quirk( + uint32_t a_key) const { + return wuffs_xxhash64__hasher__get_quirk(this, a_key); + } + + inline wuffs_base__status + set_quirk( + uint32_t a_key, + uint64_t a_value) { + return wuffs_xxhash64__hasher__set_quirk(this, a_key, a_value); + } + + inline wuffs_base__empty_struct + update( + wuffs_base__slice_u8 a_x) { + return wuffs_xxhash64__hasher__update(this, a_x); + } + + inline uint64_t + update_u64( + wuffs_base__slice_u8 a_x) { + return wuffs_xxhash64__hasher__update_u64(this, a_x); + } + + inline uint64_t + checksum_u64() const { + return wuffs_xxhash64__hasher__checksum_u64(this); + } + +#endif // __cplusplus +}; // struct wuffs_xxhash64__hasher__struct + +#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC) + +#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +// ---------------- Auxiliary - Base + +// Auxiliary code is discussed at +// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md + +#include <stdio.h> + +#include <string> + +namespace wuffs_aux { + +using IOBuffer = wuffs_base__io_buffer; + +// MemOwner represents ownership of some memory. Dynamically allocated memory +// (e.g. from malloc or new) is typically paired with free or delete, invoked +// when the std::unique_ptr is destroyed. Statically allocated memory might use +// MemOwner(nullptr, &free), even if that statically allocated memory is not +// nullptr, since calling free(nullptr) is a no-op. +using MemOwner = std::unique_ptr<void, decltype(&free)>; + +namespace sync_io { + +// -------- + +// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array. +// It owns that backing array and will free it in its destructor. +// +// The array size can be explicitly extended (by calling the grow method) but, +// unlike a C++ std::vector, there is no implicit extension (e.g. by calling +// std::vector::insert) and its maximum size is capped by the max_incl +// constructor argument. +// +// It contains an IOBuffer-typed field whose reader side provides access to +// previously written bytes and whose writer side provides access to the +// allocated but not-yet-written-to slack space. For Go programmers, this slack +// space is roughly analogous to the s[len(s):cap(s)] space of a slice s. +class DynIOBuffer { + public: + enum GrowResult { + OK = 0, + FailedMaxInclExceeded = 1, + FailedOutOfMemory = 2, + }; + + // m_buf holds the dynamically sized byte array and its read/write indexes: + // - m_buf.meta.wi is roughly analogous to a Go slice's length. + // - m_buf.data.len is roughly analogous to a Go slice's capacity. It is + // also equal to the m_buf.data.ptr malloc/realloc size. + // + // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as + // they are conceptually private to this class), but they can modify the + // bytes referenced by that pointer-length pair (e.g. compactions). + IOBuffer m_buf; + + // m_max_incl is an inclusive upper bound on the backing array size. + const uint64_t m_max_incl; + + // Constructor and destructor. + explicit DynIOBuffer(uint64_t max_incl); + ~DynIOBuffer(); + + // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be + // used after a drop call. It just restarts from zero. + void drop(); + + // grow ensures that the byte array size is at least min_incl and at most + // max_incl. It returns FailedMaxInclExceeded if that would require + // allocating more than max_incl bytes, including the case where (min_incl > + // max_incl). It returns FailedOutOfMemory if memory allocation failed. + GrowResult grow(uint64_t min_incl); + + private: + // Delete the copy and assign constructors. + DynIOBuffer(const DynIOBuffer&) = delete; + DynIOBuffer& operator=(const DynIOBuffer&) = delete; + + static uint64_t round_up(uint64_t min_incl, uint64_t max_incl); +}; + +// -------- + +class Input { + public: + virtual ~Input(); + + virtual IOBuffer* BringsItsOwnIOBuffer(); + virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length) = 0; +}; + +// -------- + +// FileInput is an Input that reads from a file source. +// +// It does not take responsibility for closing the file when done. +class FileInput : public Input { + public: + FileInput(FILE* f); + + virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length); + + private: + FILE* m_f; + + // Delete the copy and assign constructors. + FileInput(const FileInput&) = delete; + FileInput& operator=(const FileInput&) = delete; +}; + +// -------- + +// MemoryInput is an Input that reads from an in-memory source. +// +// It does not take responsibility for freeing the memory when done. +class MemoryInput : public Input { + public: + MemoryInput(const char* ptr, size_t len); + MemoryInput(const uint8_t* ptr, size_t len); + + virtual IOBuffer* BringsItsOwnIOBuffer(); + virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length); + + private: + IOBuffer m_io; + + // Delete the copy and assign constructors. + MemoryInput(const MemoryInput&) = delete; + MemoryInput& operator=(const MemoryInput&) = delete; +}; + +// -------- + +} // namespace sync_io + +} // namespace wuffs_aux + +// ---------------- Auxiliary - CBOR + +namespace wuffs_aux { + +struct DecodeCborResult { + DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0); + + std::string error_message; + uint64_t cursor_position; +}; + +class DecodeCborCallbacks { + public: + virtual ~DecodeCborCallbacks(); + + // AppendXxx are called for leaf nodes: literals, numbers, strings, etc. + + virtual std::string AppendNull() = 0; + virtual std::string AppendUndefined() = 0; + virtual std::string AppendBool(bool val) = 0; + virtual std::string AppendF64(double val) = 0; + virtual std::string AppendI64(int64_t val) = 0; + virtual std::string AppendU64(uint64_t val) = 0; + virtual std::string AppendByteString(std::string&& val) = 0; + virtual std::string AppendTextString(std::string&& val) = 0; + virtual std::string AppendMinus1MinusX(uint64_t val) = 0; + virtual std::string AppendCborSimpleValue(uint8_t val) = 0; + virtual std::string AppendCborTag(uint64_t val) = 0; + + // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR + // maps (dictionaries). + // + // The flags bits combine exactly one of: + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT + // and exactly one of: + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT + + virtual std::string Push(uint32_t flags) = 0; + virtual std::string Pop(uint32_t flags) = 0; + + // Done is always the last Callback method called by DecodeCbor, whether or + // not parsing the input as CBOR encountered an error. Even when successful, + // trailing data may remain in input and buffer. + // + // Do not keep a reference to buffer or buffer.data.ptr after Done returns, + // as DecodeCbor may then de-allocate the backing array. + // + // The default Done implementation is a no-op. + virtual void // + Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer); +}; + +// The FooArgBar types add structure to Foo's optional arguments. They wrap +// inner representations for several reasons: +// - It provides a home for the DefaultValue static method, for Foo callers +// that want to override some but not all optional arguments. +// - It provides the "Bar" name at Foo call sites, which can help self- +// document Foo calls with many arguemnts. +// - It provides some type safety against accidentally transposing or omitting +// adjacent fundamentally-numeric-typed optional arguments. + +// DecodeCborArgQuirks wraps an optional argument to DecodeCbor. +struct DecodeCborArgQuirks { + explicit DecodeCborArgQuirks(wuffs_base__slice_u32 repr0); + explicit DecodeCborArgQuirks(uint32_t* ptr, size_t len); + + // DefaultValue returns an empty slice. + static DecodeCborArgQuirks DefaultValue(); + + wuffs_base__slice_u32 repr; +}; + +// DecodeCbor calls callbacks based on the CBOR-formatted data in input. +// +// On success, the returned error_message is empty and cursor_position counts +// the number of bytes consumed. On failure, error_message is non-empty and +// cursor_position is the location of the error. That error may be a content +// error (invalid CBOR) or an input error (e.g. network failure). +DecodeCborResult // +DecodeCbor(DecodeCborCallbacks& callbacks, + sync_io::Input& input, + DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue()); + +} // namespace wuffs_aux + +// ---------------- Auxiliary - Image + +namespace wuffs_aux { + +struct DecodeImageResult { + DecodeImageResult(MemOwner&& pixbuf_mem_owner0, + wuffs_base__pixel_buffer pixbuf0, + std::string&& error_message0); + DecodeImageResult(std::string&& error_message0); + + MemOwner pixbuf_mem_owner; + wuffs_base__pixel_buffer pixbuf; + std::string error_message; +}; + +// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always +// called in this order: +// 1. SelectDecoder +// 2. HandleMetadata +// 3. SelectPixfmt +// 4. AllocPixbuf +// 5. AllocWorkbuf +// 6. Done +// +// It may return early - the third callback might not be invoked if the second +// one fails - but the final callback (Done) is always invoked. +class DecodeImageCallbacks { + public: + // AllocPixbufResult holds a memory allocation (the result of malloc or new, + // a statically allocated pointer, etc), or an error message. The memory is + // de-allocated when mem_owner goes out of scope and is destroyed. + struct AllocPixbufResult { + AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0); + AllocPixbufResult(std::string&& error_message0); + + MemOwner mem_owner; + wuffs_base__pixel_buffer pixbuf; + std::string error_message; + }; + + // AllocWorkbufResult holds a memory allocation (the result of malloc or new, + // a statically allocated pointer, etc), or an error message. The memory is + // de-allocated when mem_owner goes out of scope and is destroyed. + struct AllocWorkbufResult { + AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0); + AllocWorkbufResult(std::string&& error_message0); + + MemOwner mem_owner; + wuffs_base__slice_u8 workbuf; + std::string error_message; + }; + + virtual ~DecodeImageCallbacks(); + + // SelectDecoder returns the image decoder for the input data's file format. + // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat). + // + // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF], + // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs' + // standard library did not recognize the image format but if SelectDecoder + // was overridden, it may examine the input data's starting bytes and still + // provide its own image decoder, e.g. for an exotic image file format that's + // not in Wuffs' standard library. The prefix_etc fields have the same + // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder + // implementations should not modify prefix_data's contents. + // + // SelectDecoder might be called more than once, since some image file + // formats can wrap others. For example, a nominal BMP file can actually + // contain a JPEG or a PNG. + // + // The default SelectDecoder accepts the FOURCC codes listed below. For + // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance + // of the ETC file format is optional (for each value of ETC) and depends on + // the corresponding module to be enabled at compile time (i.e. #define'ing + // WUFFS_CONFIG__MODULE__ETC). + // - WUFFS_BASE__FOURCC__BMP + // - WUFFS_BASE__FOURCC__GIF + // - WUFFS_BASE__FOURCC__JPEG + // - WUFFS_BASE__FOURCC__NIE + // - WUFFS_BASE__FOURCC__NPBM + // - WUFFS_BASE__FOURCC__PNG + // - WUFFS_BASE__FOURCC__TGA + // - WUFFS_BASE__FOURCC__WBMP + virtual wuffs_base__image_decoder::unique_ptr // + SelectDecoder(uint32_t fourcc, + wuffs_base__slice_u8 prefix_data, + bool prefix_closed); + + // HandleMetadata acknowledges image metadata. minfo.flavor will be one of: + // - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH + // - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED + // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those + // bytes should not be retained beyond the the HandleMetadata call. + // + // minfo.metadata__fourcc() will typically match one of the + // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM | + // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC + // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA. + // + // It returns an error message, or an empty string on success. + virtual std::string // + HandleMetadata(const wuffs_base__more_information& minfo, + wuffs_base__slice_u8 raw); + + // SelectPixfmt returns the destination pixel format for AllocPixbuf. It + // should return wuffs_base__make_pixel_format(etc) called with one of: + // - WUFFS_BASE__PIXEL_FORMAT__BGR_565 + // - WUFFS_BASE__PIXEL_FORMAT__BGR + // - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL + // - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE + // - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL + // - WUFFS_BASE__PIXEL_FORMAT__RGB + // - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL + // - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL + // or return image_config.pixcfg.pixel_format(). The latter means to use the + // image file's natural pixel format. For example, GIF images' natural pixel + // format is an indexed one. + // + // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat). + // + // The default SelectPixfmt implementation returns + // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which + // is 4 bytes per pixel (8 bits per channel × 4 channels). + virtual wuffs_base__pixel_format // + SelectPixfmt(const wuffs_base__image_config& image_config); + + // AllocPixbuf allocates the pixel buffer. + // + // allow_uninitialized_memory will be true if a valid background_color was + // passed to DecodeImage, since the pixel buffer's contents will be + // overwritten with that color after AllocPixbuf returns. + // + // The default AllocPixbuf implementation allocates either uninitialized or + // zeroed memory. Zeroed memory typically corresponds to filling with opaque + // black or transparent black, depending on the pixel format. + virtual AllocPixbufResult // + AllocPixbuf(const wuffs_base__image_config& image_config, + bool allow_uninitialized_memory); + + // AllocWorkbuf allocates the work buffer. The allocated buffer's length + // should be at least len_range.min_incl, but larger allocations (up to + // len_range.max_incl) may have better performance (by using more memory). + // + // The default AllocWorkbuf implementation allocates len_range.max_incl bytes + // of either uninitialized or zeroed memory. + virtual AllocWorkbufResult // + AllocWorkbuf(wuffs_base__range_ii_u64 len_range, + bool allow_uninitialized_memory); + + // Done is always the last Callback method called by DecodeImage, whether or + // not parsing the input encountered an error. Even when successful, trailing + // data may remain in input and buffer. + // + // The image_decoder is the one returned by SelectDecoder (if SelectDecoder + // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr, + // ownership moves to the Done implementation. + // + // Do not keep a reference to buffer or buffer.data.ptr after Done returns, + // as DecodeImage may then de-allocate the backing array. + // + // The default Done implementation is a no-op, other than running the + // image_decoder unique_ptr destructor. + virtual void // + Done(DecodeImageResult& result, + sync_io::Input& input, + IOBuffer& buffer, + wuffs_base__image_decoder::unique_ptr image_decoder); +}; + +extern const char DecodeImage_BufferIsTooShort[]; +extern const char DecodeImage_MaxInclDimensionExceeded[]; +extern const char DecodeImage_MaxInclMetadataLengthExceeded[]; +extern const char DecodeImage_OutOfMemory[]; +extern const char DecodeImage_UnexpectedEndOfFile[]; +extern const char DecodeImage_UnsupportedImageFormat[]; +extern const char DecodeImage_UnsupportedMetadata[]; +extern const char DecodeImage_UnsupportedPixelBlend[]; +extern const char DecodeImage_UnsupportedPixelConfiguration[]; +extern const char DecodeImage_UnsupportedPixelFormat[]; + +// The FooArgBar types add structure to Foo's optional arguments. They wrap +// inner representations for several reasons: +// - It provides a home for the DefaultValue static method, for Foo callers +// that want to override some but not all optional arguments. +// - It provides the "Bar" name at Foo call sites, which can help self- +// document Foo calls with many arguemnts. +// - It provides some type safety against accidentally transposing or omitting +// adjacent fundamentally-numeric-typed optional arguments. + +// DecodeImageArgQuirks wraps an optional argument to DecodeImage. +struct DecodeImageArgQuirks { + explicit DecodeImageArgQuirks(wuffs_base__slice_u32 repr0); + explicit DecodeImageArgQuirks(uint32_t* ptr, size_t len); + + // DefaultValue returns an empty slice. + static DecodeImageArgQuirks DefaultValue(); + + wuffs_base__slice_u32 repr; +}; + +// DecodeImageArgFlags wraps an optional argument to DecodeImage. +struct DecodeImageArgFlags { + explicit DecodeImageArgFlags(uint64_t repr0); + + // DefaultValue returns 0. + static DecodeImageArgFlags DefaultValue(); + + // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF, + // GAMA, ICCP, KVP, SRGB and XMP. + + // Background Color. + static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001; + // Primary Chromaticities and White Point. + static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002; + // Exchangeable Image File Format. + static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004; + // Gamma Correction. + static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008; + // International Color Consortium Profile. + static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010; + // Key-Value Pair. + // + // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the + // HandleMetadata callback, the raw argument contains UTF-8 strings. + static constexpr uint64_t REPORT_METADATA_KVP = 0x0020; + // Modification Time. + static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040; + // Offset (2-Dimensional). + static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080; + // Physical Dimensions. + static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100; + // Standard Red Green Blue (Rendering Intent). + static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200; + // Extensible Metadata Platform. + static constexpr uint64_t REPORT_METADATA_XMP = 0x0400; + + uint64_t repr; +}; + +// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage. +struct DecodeImageArgPixelBlend { + explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0); + + // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC. + static DecodeImageArgPixelBlend DefaultValue(); + + wuffs_base__pixel_blend repr; +}; + +// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage. +struct DecodeImageArgBackgroundColor { + explicit DecodeImageArgBackgroundColor( + wuffs_base__color_u32_argb_premul repr0); + + // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul. + static DecodeImageArgBackgroundColor DefaultValue(); + + wuffs_base__color_u32_argb_premul repr; +}; + +// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage. +struct DecodeImageArgMaxInclDimension { + explicit DecodeImageArgMaxInclDimension(uint32_t repr0); + + // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels. + static DecodeImageArgMaxInclDimension DefaultValue(); + + uint32_t repr; +}; + +// DecodeImageArgMaxInclMetadataLength wraps an optional argument to +// DecodeImage. +struct DecodeImageArgMaxInclMetadataLength { + explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0); + + // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB. + static DecodeImageArgMaxInclMetadataLength DefaultValue(); + + uint64_t repr; +}; + +// DecodeImage decodes the image data in input. A variety of image file formats +// can be decoded, depending on what callbacks.SelectDecoder returns. +// +// For animated formats, only the first frame is returned, since the API is +// simpler for synchronous I/O and having DecodeImage only return when +// completely done, but rendering animation often involves handling other +// events in between animation frames. To decode multiple frames of animated +// images, or for asynchronous I/O (e.g. when decoding an image streamed over +// the network), use Wuffs' lower level C API instead of its higher level, +// simplified C++ API (the wuffs_aux API). +// +// The DecodeImageResult's fields depend on whether decoding succeeded: +// - On total success, the error_message is empty and pixbuf.pixcfg.is_valid() +// is true. +// - On partial success (e.g. the input file was truncated but we are still +// able to decode some of the pixels), error_message is non-empty but +// pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to +// accept or reject partial success. +// - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid() +// is false. +// +// The callbacks allocate the pixel buffer memory and work buffer memory. On +// success, pixel buffer memory ownership is passed to the DecodeImage caller +// as the returned pixbuf_mem_owner. Regardless of success or failure, the work +// buffer memory is deleted. +// +// The pixel_blend (one of the constants listed below) determines how to +// composite the decoded image over the pixel buffer's original pixels (as +// returned by callbacks.AllocPixbuf): +// - WUFFS_BASE__PIXEL_BLEND__SRC +// - WUFFS_BASE__PIXEL_BLEND__SRC_OVER +// +// The background_color is used to fill the pixel buffer after +// callbacks.AllocPixbuf returns, if it is valid in the +// wuffs_base__color_u32_argb_premul__is_valid sense. The default value, +// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater +// than its Alpha channel value (0x00). A valid background_color will typically +// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might +// still be visible on partial (not total) success or when pixel_blend is +// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque. +// +// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's +// width or height is greater than max_incl_dimension or if any opted-in (via +// flags bits) metadata is longer than max_incl_metadata_length. +DecodeImageResult // +DecodeImage(DecodeImageCallbacks& callbacks, + sync_io::Input& input, + DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(), + DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(), + DecodeImageArgPixelBlend pixel_blend = + DecodeImageArgPixelBlend::DefaultValue(), + DecodeImageArgBackgroundColor background_color = + DecodeImageArgBackgroundColor::DefaultValue(), + DecodeImageArgMaxInclDimension max_incl_dimension = + DecodeImageArgMaxInclDimension::DefaultValue(), + DecodeImageArgMaxInclMetadataLength max_incl_metadata_length = + DecodeImageArgMaxInclMetadataLength::DefaultValue()); + +} // namespace wuffs_aux + +// ---------------- Auxiliary - JSON + +namespace wuffs_aux { + +struct DecodeJsonResult { + DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0); + + std::string error_message; + uint64_t cursor_position; +}; + +class DecodeJsonCallbacks { + public: + virtual ~DecodeJsonCallbacks(); + + // AppendXxx are called for leaf nodes: literals, numbers and strings. For + // strings, the Callbacks implementation is responsible for tracking map keys + // versus other values. + + virtual std::string AppendNull() = 0; + virtual std::string AppendBool(bool val) = 0; + virtual std::string AppendF64(double val) = 0; + virtual std::string AppendI64(int64_t val) = 0; + virtual std::string AppendTextString(std::string&& val) = 0; + + // Push and Pop are called for container nodes: JSON arrays (lists) and JSON + // objects (dictionaries). + // + // The flags bits combine exactly one of: + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT + // and exactly one of: + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST + // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT + + virtual std::string Push(uint32_t flags) = 0; + virtual std::string Pop(uint32_t flags) = 0; + + // Done is always the last Callback method called by DecodeJson, whether or + // not parsing the input as JSON encountered an error. Even when successful, + // trailing data may remain in input and buffer. See "Unintuitive JSON + // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON + // parsing and when it stops. + // + // Do not keep a reference to buffer or buffer.data.ptr after Done returns, + // as DecodeJson may then de-allocate the backing array. + // + // The default Done implementation is a no-op. + virtual void // + Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer); +}; + +extern const char DecodeJson_BadJsonPointer[]; +extern const char DecodeJson_NoMatch[]; + +// The FooArgBar types add structure to Foo's optional arguments. They wrap +// inner representations for several reasons: +// - It provides a home for the DefaultValue static method, for Foo callers +// that want to override some but not all optional arguments. +// - It provides the "Bar" name at Foo call sites, which can help self- +// document Foo calls with many arguemnts. +// - It provides some type safety against accidentally transposing or omitting +// adjacent fundamentally-numeric-typed optional arguments. + +// DecodeJsonArgQuirks wraps an optional argument to DecodeJson. +struct DecodeJsonArgQuirks { + explicit DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0); + explicit DecodeJsonArgQuirks(uint32_t* ptr, size_t len); + + // DefaultValue returns an empty slice. + static DecodeJsonArgQuirks DefaultValue(); + + wuffs_base__slice_u32 repr; +}; + +// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson. +struct DecodeJsonArgJsonPointer { + explicit DecodeJsonArgJsonPointer(std::string repr0); + + // DefaultValue returns an empty string. + static DecodeJsonArgJsonPointer DefaultValue(); + + std::string repr; +}; + +// DecodeJson calls callbacks based on the JSON-formatted data in input. +// +// On success, the returned error_message is empty and cursor_position counts +// the number of bytes consumed. On failure, error_message is non-empty and +// cursor_position is the location of the error. That error may be a content +// error (invalid JSON) or an input error (e.g. network failure). +// +// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks +// run for the input's sub-node that matches the query. DecodeJson_NoMatch is +// returned if no matching sub-node was found. The empty query matches the +// input's root node, consistent with JSON Pointer semantics. +// +// The JSON Pointer implementation is greedy: duplicate keys are not rejected +// but only the first match for each '/'-separated fragment is followed. +DecodeJsonResult // +DecodeJson(DecodeJsonCallbacks& callbacks, + sync_io::Input& input, + DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(), + DecodeJsonArgJsonPointer json_pointer = + DecodeJsonArgJsonPointer::DefaultValue()); + +} // namespace wuffs_aux + +#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +// ‼ WUFFS C HEADER ENDS HERE. +#ifdef WUFFS_IMPLEMENTATION + +#ifdef __cplusplus +extern "C" { +#endif + +// ---------------- Fundamentals + +// WUFFS_BASE__MAGIC is a magic number to check that initializers are called. +// It's not foolproof, given C doesn't automatically zero memory before use, +// but it should catch 99.99% of cases. +// +// Its (non-zero) value is arbitrary, based on md5sum("wuffs"). +#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71) + +// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable +// error was previously encountered. +// +// Its (non-zero) value is arbitrary, based on md5sum("disabled"). +#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2) + +// Use switch cases for coroutine suspension points, similar to the technique +// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html +// +// The implicit fallthrough is intentional. +// +// We use trivial macros instead of an explicit assignment and case statement +// so that clang-format doesn't get confused by the unusual "case"s. +#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:; +#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \ + coro_susp_point = n; \ + case n:; + +#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \ + if (!status.repr) { \ + goto ok; \ + } else if (*status.repr != '$') { \ + goto exit; \ + } \ + coro_susp_point = n; \ + goto suspend; \ + case n:; + +// The "defined(__clang__)" isn't redundant. While vanilla clang defines +// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. +#if defined(__GNUC__) || defined(__clang__) +#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1)) +#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0)) +#else +#define WUFFS_BASE__LIKELY(expr) (expr) +#define WUFFS_BASE__UNLIKELY(expr) (expr) +#endif + +// -------- + +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif +static inline uint8_t* // +wuffs_base__strip_const_from_u8_ptr(const uint8_t* ptr) { + return (uint8_t*)ptr; +} +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + +// -------- + +static inline wuffs_base__empty_struct // +wuffs_base__ignore_status(wuffs_base__status z) { + return wuffs_base__make_empty_struct(); +} + +static inline wuffs_base__status // +wuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) { + if (z.repr && (*z.repr == '$')) { + z.repr = wuffs_base__error__cannot_return_a_suspension; + } + return z; +} + +// -------- + +// wuffs_base__iterate_total_advance returns the exclusive pointer-offset at +// which iteration should stop. The overall slice has length total_len, each +// iteration's sub-slice has length iter_len and are placed iter_advance apart. +// +// The iter_advance may not be larger than iter_len. The iter_advance may be +// smaller than iter_len, in which case the sub-slices will overlap. +// +// The return value r satisfies ((0 <= r) && (r <= total_len)). +// +// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are +// four iterations at offsets 0, 3, 6 and 9. This function returns 12. +// +// 0123456789012345 +// [....] +// [....] +// [....] +// [....] +// $ +// 0123456789012345 +// +// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are +// three iterations at offsets 0, 5 and 10. This function returns 15. +// +// 0123456789012345 +// [....] +// [....] +// [....] +// $ +// 0123456789012345 +static inline size_t // +wuffs_base__iterate_total_advance(size_t total_len, + size_t iter_len, + size_t iter_advance) { + if (total_len >= iter_len) { + size_t n = total_len - iter_len; + return ((n / iter_advance) * iter_advance) + iter_advance; + } + return 0; +} + +// ---------------- Numeric Types + +extern const uint8_t wuffs_base__low_bits_mask__u8[8]; +extern const uint16_t wuffs_base__low_bits_mask__u16[16]; +extern const uint32_t wuffs_base__low_bits_mask__u32[32]; +extern const uint64_t wuffs_base__low_bits_mask__u64[64]; + +#define WUFFS_BASE__LOW_BITS_MASK__U8(n) (wuffs_base__low_bits_mask__u8[n]) +#define WUFFS_BASE__LOW_BITS_MASK__U16(n) (wuffs_base__low_bits_mask__u16[n]) +#define WUFFS_BASE__LOW_BITS_MASK__U32(n) (wuffs_base__low_bits_mask__u32[n]) +#define WUFFS_BASE__LOW_BITS_MASK__U64(n) (wuffs_base__low_bits_mask__u64[n]) + +// -------- + +static inline void // +wuffs_base__u8__sat_add_indirect(uint8_t* x, uint8_t y) { + *x = wuffs_base__u8__sat_add(*x, y); +} + +static inline void // +wuffs_base__u8__sat_sub_indirect(uint8_t* x, uint8_t y) { + *x = wuffs_base__u8__sat_sub(*x, y); +} + +static inline void // +wuffs_base__u16__sat_add_indirect(uint16_t* x, uint16_t y) { + *x = wuffs_base__u16__sat_add(*x, y); +} + +static inline void // +wuffs_base__u16__sat_sub_indirect(uint16_t* x, uint16_t y) { + *x = wuffs_base__u16__sat_sub(*x, y); +} + +static inline void // +wuffs_base__u32__sat_add_indirect(uint32_t* x, uint32_t y) { + *x = wuffs_base__u32__sat_add(*x, y); +} + +static inline void // +wuffs_base__u32__sat_sub_indirect(uint32_t* x, uint32_t y) { + *x = wuffs_base__u32__sat_sub(*x, y); +} + +static inline void // +wuffs_base__u64__sat_add_indirect(uint64_t* x, uint64_t y) { + *x = wuffs_base__u64__sat_add(*x, y); +} + +static inline void // +wuffs_base__u64__sat_sub_indirect(uint64_t* x, uint64_t y) { + *x = wuffs_base__u64__sat_sub(*x, y); +} + +// ---------------- Numeric Types (Utility) + +#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \ + ((uint32_t)(int32_t)(int16_t)(a)) + +#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \ + ((uint32_t)(((int32_t)(a)) >> (n))) + +#define wuffs_base__utility__sign_extend_rshift_u64(a, n) \ + ((uint64_t)(((int64_t)(a)) >> (n))) + +// ---------------- Slices and Tables + +// wuffs_base__slice_u8__prefix returns up to the first up_to bytes of s. +static inline wuffs_base__slice_u8 // +wuffs_base__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) { + if (((uint64_t)(s.len)) > up_to) { + s.len = ((size_t)up_to); + } + return s; +} + +// wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s. +static inline wuffs_base__slice_u8 // +wuffs_base__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) { + if (((uint64_t)(s.len)) > up_to) { + s.ptr += ((uint64_t)(s.len)) - up_to; + s.len = ((size_t)up_to); + } + return s; +} + +// wuffs_base__slice_u8__copy_from_slice calls memmove(dst.ptr, src.ptr, len) +// where len is the minimum of dst.len and src.len. +// +// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty +// slice) is valid and results in a no-op. +static inline uint64_t // +wuffs_base__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src) { + size_t len = dst.len < src.len ? dst.len : src.len; + if (len > 0) { + memmove(dst.ptr, src.ptr, len); + } + return len; +} + +static inline wuffs_base__empty_struct // +wuffs_base__bulk_load_host_endian(void* ptr, + size_t len, + wuffs_base__slice_u8 src) { + if (len && (len <= src.len)) { + memmove(ptr, src.ptr, len); + } + return wuffs_base__make_empty_struct(); +} + +static inline wuffs_base__empty_struct // +wuffs_base__bulk_memset(void* ptr, size_t len, uint8_t byte_value) { + if (len) { + memset(ptr, byte_value, len); + } + return wuffs_base__make_empty_struct(); +} + +static inline wuffs_base__empty_struct // +wuffs_base__bulk_save_host_endian(void* ptr, + size_t len, + wuffs_base__slice_u8 dst) { + if (len && (len <= dst.len)) { + memmove(dst.ptr, ptr, len); + } + return wuffs_base__make_empty_struct(); +} + +// -------- + +static inline wuffs_base__slice_u8 // +wuffs_base__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) { + if (y < t.height) { + return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width); + } + return wuffs_base__make_slice_u8(NULL, 0); +} + +// ---------------- Slices and Tables (Utility) + +#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8 + +// ---------------- Ranges and Rects + +static inline uint32_t // +wuffs_base__range_ii_u32__get_min_incl(const wuffs_base__range_ii_u32* r) { + return r->min_incl; +} + +static inline uint32_t // +wuffs_base__range_ii_u32__get_max_incl(const wuffs_base__range_ii_u32* r) { + return r->max_incl; +} + +static inline uint32_t // +wuffs_base__range_ie_u32__get_min_incl(const wuffs_base__range_ie_u32* r) { + return r->min_incl; +} + +static inline uint32_t // +wuffs_base__range_ie_u32__get_max_excl(const wuffs_base__range_ie_u32* r) { + return r->max_excl; +} + +static inline uint64_t // +wuffs_base__range_ii_u64__get_min_incl(const wuffs_base__range_ii_u64* r) { + return r->min_incl; +} + +static inline uint64_t // +wuffs_base__range_ii_u64__get_max_incl(const wuffs_base__range_ii_u64* r) { + return r->max_incl; +} + +static inline uint64_t // +wuffs_base__range_ie_u64__get_min_incl(const wuffs_base__range_ie_u64* r) { + return r->min_incl; +} + +static inline uint64_t // +wuffs_base__range_ie_u64__get_max_excl(const wuffs_base__range_ie_u64* r) { + return r->max_excl; +} + +// ---------------- Ranges and Rects (Utility) + +#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32 +#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32 +#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64 +#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64 +#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32 +#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32 +#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32 +#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32 +#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64 +#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64 +#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32 +#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32 + +// ---------------- I/O + +static inline uint64_t // +wuffs_base__io__count_since(uint64_t mark, uint64_t index) { + if (index >= mark) { + return index - mark; + } + return 0; +} + +// TODO: drop the "const" in "const uint8_t* ptr". Some though required about +// the base.io_reader.since method returning a mutable "slice base.u8". +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif +static inline wuffs_base__slice_u8 // +wuffs_base__io__since(uint64_t mark, uint64_t index, const uint8_t* ptr) { + if (index >= mark) { + return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark, + ((size_t)(index - mark))); + } + return wuffs_base__make_slice_u8(NULL, 0); +} +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + +// -------- + +static inline void // +wuffs_base__io_reader__limit(const uint8_t** ptr_io2_r, + const uint8_t* iop_r, + uint64_t limit) { + if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) { + *ptr_io2_r = iop_r + limit; + } +} + +static inline uint32_t // +wuffs_base__io_reader__limited_copy_u32_to_slice(const uint8_t** ptr_iop_r, + const uint8_t* io2_r, + uint32_t length, + wuffs_base__slice_u8 dst) { + const uint8_t* iop_r = *ptr_iop_r; + size_t n = dst.len; + if (n > length) { + n = length; + } + if (n > ((size_t)(io2_r - iop_r))) { + n = (size_t)(io2_r - iop_r); + } + if (n > 0) { + memmove(dst.ptr, iop_r, n); + *ptr_iop_r += n; + } + return (uint32_t)(n); +} + +// wuffs_base__io_reader__match7 returns whether the io_reader's upcoming bytes +// start with the given prefix (up to 7 bytes long). It is peek-like, not +// read-like, in that there are no side-effects. +// +// The low 3 bits of a hold the prefix length, n. +// +// The high 56 bits of a hold the prefix itself, in little-endian order. The +// first prefix byte is in bits 8..=15, the second prefix byte is in bits +// 16..=23, etc. The high (8 * (7 - n)) bits are ignored. +// +// There are three possible return values: +// - 0 means success. +// - 1 means inconclusive, equivalent to "$short read". +// - 2 means failure. +static inline uint32_t // +wuffs_base__io_reader__match7(const uint8_t* iop_r, + const uint8_t* io2_r, + wuffs_base__io_buffer* r, + uint64_t a) { + uint32_t n = a & 7; + a >>= 8; + if ((io2_r - iop_r) >= 8) { + uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r); + uint32_t shift = 8 * (8 - n); + return ((a << shift) == (x << shift)) ? 0 : 2; + } + for (; n > 0; n--) { + if (iop_r >= io2_r) { + return (r && r->meta.closed) ? 2 : 1; + } else if (*iop_r != ((uint8_t)(a))) { + return 2; + } + iop_r++; + a >>= 8; + } + return 0; +} + +static inline wuffs_base__io_buffer* // +wuffs_base__io_reader__set(wuffs_base__io_buffer* b, + const uint8_t** ptr_iop_r, + const uint8_t** ptr_io0_r, + const uint8_t** ptr_io1_r, + const uint8_t** ptr_io2_r, + wuffs_base__slice_u8 data, + uint64_t history_position) { + b->data = data; + b->meta.wi = data.len; + b->meta.ri = 0; + b->meta.pos = history_position; + b->meta.closed = false; + + *ptr_iop_r = data.ptr; + *ptr_io0_r = data.ptr; + *ptr_io1_r = data.ptr; + *ptr_io2_r = data.ptr + data.len; + + return b; +} + +// -------- + +static inline uint64_t // +wuffs_base__io_writer__copy_from_slice(uint8_t** ptr_iop_w, + uint8_t* io2_w, + wuffs_base__slice_u8 src) { + uint8_t* iop_w = *ptr_iop_w; + size_t n = src.len; + if (n > ((size_t)(io2_w - iop_w))) { + n = (size_t)(io2_w - iop_w); + } + if (n > 0) { + memmove(iop_w, src.ptr, n); + *ptr_iop_w += n; + } + return (uint64_t)(n); +} + +static inline void // +wuffs_base__io_writer__limit(uint8_t** ptr_io2_w, + uint8_t* iop_w, + uint64_t limit) { + if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) { + *ptr_io2_w = iop_w + limit; + } +} + +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_history(uint8_t** ptr_iop_w, + uint8_t* io0_w, + uint8_t* io2_w, + uint32_t length, + uint32_t distance) { + if (!distance) { + return 0; + } + uint8_t* p = *ptr_iop_w; + if ((size_t)(p - io0_w) < (size_t)(distance)) { + return 0; + } + uint8_t* q = p - distance; + size_t n = (size_t)(io2_w - p); + if ((size_t)(length) > n) { + length = (uint32_t)(n); + } else { + n = (size_t)(length); + } + // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that + // is mostly because 3 is the minimum length for the deflate format. This + // function implementation shouldn't overfit to that one format. Perhaps the + // limited_copy_u32_from_history Wuffs method should also take an unroll hint + // argument, and the cgen can look if that argument is the constant + // expression '3'. + // + // See also wuffs_base__io_writer__limited_copy_u32_from_history_fast below. + for (; n >= 3; n -= 3) { + *p++ = *q++; + *p++ = *q++; + *p++ = *q++; + } + for (; n; n--) { + *p++ = *q++; + } + *ptr_iop_w = p; + return length; +} + +// wuffs_base__io_writer__limited_copy_u32_from_history_fast is like the +// wuffs_base__io_writer__limited_copy_u32_from_history function above, but has +// stronger pre-conditions. +// +// The caller needs to prove that: +// - length <= (io2_w - *ptr_iop_w) +// - distance >= 1 +// - distance <= (*ptr_iop_w - io0_w) +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_history_fast(uint8_t** ptr_iop_w, + uint8_t* io0_w, + uint8_t* io2_w, + uint32_t length, + uint32_t distance) { + uint8_t* p = *ptr_iop_w; + uint8_t* q = p - distance; + uint32_t n = length; + for (; n >= 3; n -= 3) { + *p++ = *q++; + *p++ = *q++; + *p++ = *q++; + } + for (; n; n--) { + *p++ = *q++; + } + *ptr_iop_w = p; + return length; +} + +// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast +// copies the previous byte (the one immediately before *ptr_iop_w), copying 8 +// byte chunks at a time. Each chunk contains 8 repetitions of the same byte. +// +// In terms of number of bytes copied, length is rounded up to a multiple of 8. +// As a special case, a zero length rounds up to 8 (even though 0 is already a +// multiple of 8), since there is always at least one 8 byte chunk copied. +// +// In terms of advancing *ptr_iop_w, length is not rounded up. +// +// The caller needs to prove that: +// - (length + 8) <= (io2_w - *ptr_iop_w) +// - distance == 1 +// - distance <= (*ptr_iop_w - io0_w) +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( + uint8_t** ptr_iop_w, + uint8_t* io0_w, + uint8_t* io2_w, + uint32_t length, + uint32_t distance) { + uint8_t* p = *ptr_iop_w; + uint64_t x = p[-1]; + x |= x << 8; + x |= x << 16; + x |= x << 32; + uint32_t n = length; + while (1) { + wuffs_base__poke_u64le__no_bounds_check(p, x); + if (n <= 8) { + p += n; + break; + } + p += 8; + n -= 8; + } + *ptr_iop_w = p; + return length; +} + +// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast is +// like the wuffs_base__io_writer__limited_copy_u32_from_history_fast function +// above, but copies 8 byte chunks at a time. +// +// In terms of number of bytes copied, length is rounded up to a multiple of 8. +// As a special case, a zero length rounds up to 8 (even though 0 is already a +// multiple of 8), since there is always at least one 8 byte chunk copied. +// +// In terms of advancing *ptr_iop_w, length is not rounded up. +// +// The caller needs to prove that: +// - (length + 8) <= (io2_w - *ptr_iop_w) +// - distance >= 8 +// - distance <= (*ptr_iop_w - io0_w) +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( + uint8_t** ptr_iop_w, + uint8_t* io0_w, + uint8_t* io2_w, + uint32_t length, + uint32_t distance) { + uint8_t* p = *ptr_iop_w; + uint8_t* q = p - distance; + uint32_t n = length; + while (1) { + memcpy(p, q, 8); + if (n <= 8) { + p += n; + break; + } + p += 8; + q += 8; + n -= 8; + } + *ptr_iop_w = p; + return length; +} + +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_reader(uint8_t** ptr_iop_w, + uint8_t* io2_w, + uint32_t length, + const uint8_t** ptr_iop_r, + const uint8_t* io2_r) { + uint8_t* iop_w = *ptr_iop_w; + size_t n = length; + if (n > ((size_t)(io2_w - iop_w))) { + n = (size_t)(io2_w - iop_w); + } + const uint8_t* iop_r = *ptr_iop_r; + if (n > ((size_t)(io2_r - iop_r))) { + n = (size_t)(io2_r - iop_r); + } + if (n > 0) { + memmove(iop_w, iop_r, n); + *ptr_iop_w += n; + *ptr_iop_r += n; + } + return (uint32_t)(n); +} + +static inline uint32_t // +wuffs_base__io_writer__limited_copy_u32_from_slice(uint8_t** ptr_iop_w, + uint8_t* io2_w, + uint32_t length, + wuffs_base__slice_u8 src) { + uint8_t* iop_w = *ptr_iop_w; + size_t n = src.len; + if (n > length) { + n = length; + } + if (n > ((size_t)(io2_w - iop_w))) { + n = (size_t)(io2_w - iop_w); + } + if (n > 0) { + memmove(iop_w, src.ptr, n); + *ptr_iop_w += n; + } + return (uint32_t)(n); +} + +static inline wuffs_base__io_buffer* // +wuffs_base__io_writer__set(wuffs_base__io_buffer* b, + uint8_t** ptr_iop_w, + uint8_t** ptr_io0_w, + uint8_t** ptr_io1_w, + uint8_t** ptr_io2_w, + wuffs_base__slice_u8 data, + uint64_t history_position) { + b->data = data; + b->meta.wi = 0; + b->meta.ri = 0; + b->meta.pos = history_position; + b->meta.closed = false; + + *ptr_iop_w = data.ptr; + *ptr_io0_w = data.ptr; + *ptr_io1_w = data.ptr; + *ptr_io2_w = data.ptr + data.len; + + return b; +} + +// ---------------- I/O (Utility) + +#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader +#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer + +// ---------------- Tokens + +// ---------------- Tokens (Utility) + +// ---------------- Memory Allocation + +// ---------------- Images + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( + const wuffs_base__pixel_swizzler* p, + uint32_t up_to_num_pixels, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + const uint8_t** ptr_iop_r, + const uint8_t* io2_r); + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + const uint8_t** ptr_iop_r, + const uint8_t* io2_r); + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + uint64_t num_pixels); + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_swizzler__swizzle_ycck( + const wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_buffer* dst, + wuffs_base__slice_u8 dst_palette, + uint32_t width, + uint32_t height, + wuffs_base__slice_u8 src0, + wuffs_base__slice_u8 src1, + wuffs_base__slice_u8 src2, + wuffs_base__slice_u8 src3, + uint32_t width0, + uint32_t width1, + uint32_t width2, + uint32_t width3, + uint32_t height0, + uint32_t height1, + uint32_t height2, + uint32_t height3, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t stride3, + uint8_t h0, + uint8_t h1, + uint8_t h2, + uint8_t h3, + uint8_t v0, + uint8_t v1, + uint8_t v2, + uint8_t v3, + bool is_rgb_or_cmyk, + bool triangle_filter_for_2to1, + wuffs_base__slice_u8 scratch_buffer_2k); + +// ---------------- Images (Utility) + +#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format + +// ---------------- String Conversions + +// ---------------- Unicode and UTF-8 + +// ---------------- + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__CORE) + +const uint8_t wuffs_base__low_bits_mask__u8[8] = { + 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, +}; + +const uint16_t wuffs_base__low_bits_mask__u16[16] = { + 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, + 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, +}; + +const uint32_t wuffs_base__low_bits_mask__u32[32] = { + 0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F, + 0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF, + 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF, + 0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF, + 0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF, + 0x3FFFFFFF, 0x7FFFFFFF, +}; + +const uint64_t wuffs_base__low_bits_mask__u64[64] = { + 0x0000000000000000, 0x0000000000000001, 0x0000000000000003, + 0x0000000000000007, 0x000000000000000F, 0x000000000000001F, + 0x000000000000003F, 0x000000000000007F, 0x00000000000000FF, + 0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF, + 0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF, + 0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF, + 0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF, + 0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF, + 0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF, + 0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF, + 0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF, + 0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF, + 0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF, + 0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF, + 0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF, + 0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF, + 0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF, + 0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF, + 0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF, + 0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF, + 0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF, + 0x7FFFFFFFFFFFFFFF, +}; + +const uint32_t wuffs_base__pixel_format__bits_per_channel[16] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40, +}; + +const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect"; +const char wuffs_base__note__end_of_data[] = "@base: end of data"; +const char wuffs_base__note__metadata_reported[] = "@base: metadata reported"; +const char wuffs_base__suspension__even_more_information[] = "$base: even more information"; +const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read"; +const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write"; +const char wuffs_base__suspension__short_read[] = "$base: short read"; +const char wuffs_base__suspension__short_write[] = "$base: short write"; +const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position"; +const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)"; +const char wuffs_base__error__bad_argument[] = "#base: bad argument"; +const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence"; +const char wuffs_base__error__bad_data[] = "#base: bad data"; +const char wuffs_base__error__bad_receiver[] = "#base: bad receiver"; +const char wuffs_base__error__bad_restart[] = "#base: bad restart"; +const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver"; +const char wuffs_base__error__bad_vtable[] = "#base: bad vtable"; +const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length"; +const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version"; +const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension"; +const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error"; +const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed"; +const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called"; +const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls"; +const char wuffs_base__error__no_more_information[] = "#base: no more information"; +const char wuffs_base__error__not_enough_data[] = "#base: not enough data"; +const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds"; +const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension"; +const char wuffs_base__error__unsupported_method[] = "#base: unsupported method"; +const char wuffs_base__error__unsupported_option[] = "#base: unsupported option"; +const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option"; +const char wuffs_base__error__too_much_data[] = "#base: too much data"; + +const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32"; +const char wuffs_base__hasher_u64__vtable_name[] = "{vtable}wuffs_base__hasher_u64"; +const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder"; +const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer"; +const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder"; + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__CORE) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES) + +// ---------------- Interface Definitions. + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__hasher_u32__checksum_u32( + const wuffs_base__hasher_u32* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { + const wuffs_base__hasher_u32__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); + return (*func_ptrs->checksum_u32)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u32__get_quirk( + const wuffs_base__hasher_u32* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { + const wuffs_base__hasher_u32__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); + return (*func_ptrs->get_quirk)(self, a_key); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__hasher_u32__set_quirk( + wuffs_base__hasher_u32* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { + const wuffs_base__hasher_u32__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_quirk)(self, a_key, a_value); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__hasher_u32__update( + wuffs_base__hasher_u32* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { + const wuffs_base__hasher_u32__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); + return (*func_ptrs->update)(self, a_x); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_empty_struct(); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__hasher_u32__update_u32( + wuffs_base__hasher_u32* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { + const wuffs_base__hasher_u32__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); + return (*func_ptrs->update_u32)(self, a_x); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +// -------- + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__checksum_u64( + const wuffs_base__hasher_u64* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) { + const wuffs_base__hasher_u64__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers); + return (*func_ptrs->checksum_u64)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__get_quirk( + const wuffs_base__hasher_u64* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) { + const wuffs_base__hasher_u64__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers); + return (*func_ptrs->get_quirk)(self, a_key); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__hasher_u64__set_quirk( + wuffs_base__hasher_u64* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) { + const wuffs_base__hasher_u64__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_quirk)(self, a_key, a_value); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__hasher_u64__update( + wuffs_base__hasher_u64* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) { + const wuffs_base__hasher_u64__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers); + return (*func_ptrs->update)(self, a_x); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_empty_struct(); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__hasher_u64__update_u64( + wuffs_base__hasher_u64* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) { + const wuffs_base__hasher_u64__func_ptrs* func_ptrs = + (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers); + return (*func_ptrs->update_u64)(self, a_x); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +// -------- + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_frame( + wuffs_base__image_decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_frame_config( + wuffs_base__image_decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->decode_frame_config)(self, a_dst, a_src); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__decode_image_config( + wuffs_base__image_decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->decode_image_config)(self, a_dst, a_src); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_base__image_decoder__frame_dirty_rect( + const wuffs_base__image_decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->frame_dirty_rect)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__utility__empty_rect_ie_u32(); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__get_quirk( + const wuffs_base__image_decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->get_quirk)(self, a_key); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__history_retain_length( + const wuffs_base__image_decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->history_retain_length)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_base__image_decoder__num_animation_loops( + const wuffs_base__image_decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->num_animation_loops)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__num_decoded_frame_configs( + const wuffs_base__image_decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->num_decoded_frame_configs)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__image_decoder__num_decoded_frames( + const wuffs_base__image_decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->num_decoded_frames)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__restart_frame( + wuffs_base__image_decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->restart_frame)(self, a_index, a_io_position); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__set_quirk( + wuffs_base__image_decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_quirk)(self, a_key, a_value); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_base__image_decoder__set_report_metadata( + wuffs_base__image_decoder* self, + uint32_t a_fourcc, + bool a_report) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_empty_struct(); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__image_decoder__tell_me_more( + wuffs_base__image_decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__image_decoder__workbuf_len( + const wuffs_base__image_decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { + const wuffs_base__image_decoder__func_ptrs* func_ptrs = + (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->workbuf_len)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__utility__empty_range_ii_u64(); +} + +// -------- + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__io_transformer__get_quirk( + const wuffs_base__io_transformer* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { + const wuffs_base__io_transformer__func_ptrs* func_ptrs = + (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); + return (*func_ptrs->get_quirk)(self, a_key); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__io_transformer__history_retain_length( + const wuffs_base__io_transformer* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { + const wuffs_base__io_transformer__func_ptrs* func_ptrs = + (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); + return (*func_ptrs->history_retain_length)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__io_transformer__set_quirk( + wuffs_base__io_transformer* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { + const wuffs_base__io_transformer__func_ptrs* func_ptrs = + (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_quirk)(self, a_key, a_value); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__io_transformer__transform_io( + wuffs_base__io_transformer* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { + const wuffs_base__io_transformer__func_ptrs* func_ptrs = + (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); + return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__io_transformer__workbuf_len( + const wuffs_base__io_transformer* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { + const wuffs_base__io_transformer__func_ptrs* func_ptrs = + (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); + return (*func_ptrs->workbuf_len)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__utility__empty_range_ii_u64(); +} + +// -------- + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__token_decoder__decode_tokens( + wuffs_base__token_decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { + const wuffs_base__token_decoder__func_ptrs* func_ptrs = + (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__token_decoder__get_quirk( + const wuffs_base__token_decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { + const wuffs_base__token_decoder__func_ptrs* func_ptrs = + (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->get_quirk)(self, a_key); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_base__token_decoder__history_retain_length( + const wuffs_base__token_decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { + const wuffs_base__token_decoder__func_ptrs* func_ptrs = + (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->history_retain_length)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return 0; +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_base__token_decoder__set_quirk( + wuffs_base__token_decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { + const wuffs_base__token_decoder__func_ptrs* func_ptrs = + (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->set_quirk)(self, a_key, a_value); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__make_status(wuffs_base__error__bad_vtable); +} + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_base__token_decoder__workbuf_len( + const wuffs_base__token_decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + const wuffs_base__vtable* v = &self->private_impl.first_vtable; + int i; + for (i = 0; i < 63; i++) { + if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { + const wuffs_base__token_decoder__func_ptrs* func_ptrs = + (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); + return (*func_ptrs->workbuf_len)(self); + } else if (v->vtable_name == NULL) { + break; + } + v++; + } + + return wuffs_base__utility__empty_range_ii_u64(); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV) + +// ---------------- IEEE 754 Floating Point + +// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by +// script/print-hpd-left-shift.go. That script has an optional -comments flag, +// whose output is not copied here, which prints further detail. +// +// These tables are used in +// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits. + +// wuffs_base__private_implementation__hpd_left_shift[i] encodes the number of +// new digits created after multiplying a positive integer by (1 << i): the +// additional length in the decimal representation. For example, shifting "234" +// by 3 (equivalent to multiplying by 8) will produce "1872". Going from a +// 3-length string to a 4-length string means that 1 new digit was added (and +// existing digits may have changed). +// +// Shifting by i can add either N or N-1 new digits, depending on whether the +// original positive integer compares >= or < to the i'th power of 5 (as 10 +// equals 2 * 5). Comparison is lexicographic, not numerical. +// +// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new +// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625": +// - ("1" << 4) is "16", which adds 1 new digit. +// - ("5678" << 4) is "90848", which adds 1 new digit. +// - ("624" << 4) is "9984", which adds 1 new digit. +// - ("62498" << 4) is "999968", which adds 1 new digit. +// - ("625" << 4) is "10000", which adds 2 new digits. +// - ("625001" << 4) is "10000016", which adds 2 new digits. +// - ("7008" << 4) is "112128", which adds 2 new digits. +// - ("99" << 4) is "1584", which adds 2 new digits. +// +// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift +// array encodes this as: +// - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006. +// - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009. +// where the ? isn't relevant for i == 4. +// +// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two +// possible number of new digits. The low 11 bits are an offset into the +// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i +// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9] +// is the string "\x06\x02\x05", so the relevant power of 5 is "625". +// +// Thanks to Ken Thompson for the original idea. +static const uint16_t wuffs_base__private_implementation__hpd_left_shift[65] = { + 0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817, + 0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067, + 0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF, + 0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0, + 0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA, + 0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC, + 0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C, + 0x051C, 0x051C, +}; + +// wuffs_base__private_implementation__powers_of_5 contains the powers of 5, +// concatenated together: "5", "25", "125", "625", "3125", etc. +static const uint8_t wuffs_base__private_implementation__powers_of_5[0x051C] = { + 5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9, + 0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2, + 5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5, + 1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0, + 6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5, + 6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1, + 6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4, + 1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7, + 8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0, + 2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3, + 8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1, + 2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6, + 2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5, + 7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0, + 7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6, + 9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8, + 1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7, + 2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6, + 1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8, + 0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9, + 0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2, + 9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8, + 5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7, + 2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5, + 0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3, + 7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2, + 5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9, + 8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8, + 6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4, + 0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0, + 8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5, + 6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1, + 2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5, + 0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3, + 5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4, + 5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3, + 8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8, + 5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2, + 5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6, + 3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2, + 5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2, + 5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5, + 8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5, + 6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8, + 1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9, + 5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3, + 9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6, + 2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1, + 8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1, + 7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4, + 8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7, + 9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3, + 6, 9, 1, 4, 0, 6, 2, 5, +}; + +// -------- + +// wuffs_base__private_implementation__powers_of_10 contains truncated +// approximations to the powers of 10, ranging from 1e-307 to 1e+288 inclusive, +// as 596 pairs of uint64_t values (a 128-bit mantissa). +// +// There's also an implicit third column (implied by a linear formula involving +// the base-10 exponent) that is the base-2 exponent, biased by a magic +// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias +// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and +// wuffs_base__private_implementation__parse_number_f64_eisel_lemire works with +// multiples-of-64-bit mantissas. +// +// For example, the third row holds the approximation to 1e-305: +// 0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE)) +// +// Similarly, 1e+4 is approximated by: +// 0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE)) +// +// Similarly, 1e+68 is approximated by: +// 0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE)) +// +// This table was generated by by script/print-mpb-powers-of-10.go +static const uint64_t wuffs_base__private_implementation__powers_of_10[596][2] = + { + {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB}, // 1e-307 + {0x8F48A4899877186C, 0xB3C4F1BA87BC8696}, // 1e-306 + {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C}, // 1e-305 + {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925}, // 1e-304 + {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F}, // 1e-303 + {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A}, // 1e-302 + {0xBE311C083A225CD2, 0x892731AC9FAF056E}, // 1e-301 + {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA}, // 1e-300 + {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D}, // 1e-299 + {0x25BBF56008C58EA5, 0x85F0468293F0EB4E}, // 1e-298 + {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621}, // 1e-297 + {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA}, // 1e-296 + {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA}, // 1e-295 + {0xE50FF107BAB528A0, 0xA37FCE126597973C}, // 1e-294 + {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C}, // 1e-293 + {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F}, // 1e-292 + {0x77B191618C54E9AC, 0x9FAACF3DF73609B1}, // 1e-291 + {0xD59DF5B9EF6A2417, 0xC795830D75038C1D}, // 1e-290 + {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25}, // 1e-289 + {0x4EE367F9430AEC32, 0x9BECCE62836AC577}, // 1e-288 + {0x229C41F793CDA73F, 0xC2E801FB244576D5}, // 1e-287 + {0x6B43527578C1110F, 0xF3A20279ED56D48A}, // 1e-286 + {0x830A13896B78AAA9, 0x9845418C345644D6}, // 1e-285 + {0x23CC986BC656D553, 0xBE5691EF416BD60C}, // 1e-284 + {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F}, // 1e-283 + {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39}, // 1e-282 + {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07}, // 1e-281 + {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9}, // 1e-280 + {0x23100809B9C21FA1, 0x91376C36D99995BE}, // 1e-279 + {0xABD40A0C2832A78A, 0xB58547448FFFFB2D}, // 1e-278 + {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9}, // 1e-277 + {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B}, // 1e-276 + {0x99CD11CFDF41779C, 0xB1442798F49FFB4A}, // 1e-275 + {0x40405643D711D583, 0xDD95317F31C7FA1D}, // 1e-274 + {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52}, // 1e-273 + {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66}, // 1e-272 + {0x90BED43E40076A82, 0xD863B256369D4A40}, // 1e-271 + {0x5A7744A6E804A291, 0x873E4F75E2224E68}, // 1e-270 + {0x711515D0A205CB36, 0xA90DE3535AAAE202}, // 1e-269 + {0x0D5A5B44CA873E03, 0xD3515C2831559A83}, // 1e-268 + {0xE858790AFE9486C2, 0x8412D9991ED58091}, // 1e-267 + {0x626E974DBE39A872, 0xA5178FFF668AE0B6}, // 1e-266 + {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3}, // 1e-265 + {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E}, // 1e-264 + {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72}, // 1e-263 + {0xA327FFB266B56220, 0xC987434744AC874E}, // 1e-262 + {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922}, // 1e-261 + {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5}, // 1e-260 + {0xCB550FB4384D21D3, 0xC4CE17B399107C22}, // 1e-259 + {0x7E2A53A146606A48, 0xF6019DA07F549B2B}, // 1e-258 + {0x2EDA7444CBFC426D, 0x99C102844F94E0FB}, // 1e-257 + {0xFA911155FEFB5308, 0xC0314325637A1939}, // 1e-256 + {0x793555AB7EBA27CA, 0xF03D93EEBC589F88}, // 1e-255 + {0x4BC1558B2F3458DE, 0x96267C7535B763B5}, // 1e-254 + {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2}, // 1e-253 + {0x465E15A979C1CADC, 0xEA9C227723EE8BCB}, // 1e-252 + {0x0BFACD89EC191EC9, 0x92A1958A7675175F}, // 1e-251 + {0xCEF980EC671F667B, 0xB749FAED14125D36}, // 1e-250 + {0x82B7E12780E7401A, 0xE51C79A85916F484}, // 1e-249 + {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2}, // 1e-248 + {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07}, // 1e-247 + {0x67A791E093E1D49A, 0xDFBDCECE67006AC9}, // 1e-246 + {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD}, // 1e-245 + {0x58FAE9F773886E18, 0xAECC49914078536D}, // 1e-244 + {0xAF39A475506A899E, 0xDA7F5BF590966848}, // 1e-243 + {0x6D8406C952429603, 0x888F99797A5E012D}, // 1e-242 + {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178}, // 1e-241 + {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6}, // 1e-240 + {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26}, // 1e-239 + {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F}, // 1e-238 + {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B}, // 1e-237 + {0x76C53D08D6B70858, 0x823C12795DB6CE57}, // 1e-236 + {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED}, // 1e-235 + {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268}, // 1e-234 + {0xD3F93B35435D7C4C, 0xFE5D54150B090B02}, // 1e-233 + {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1}, // 1e-232 + {0x359AB6419CA1091B, 0xC6B8E9B0709F109A}, // 1e-231 + {0xC30163D203C94B62, 0xF867241C8CC6D4C0}, // 1e-230 + {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8}, // 1e-229 + {0x985915FC12F542E4, 0xC21094364DFB5636}, // 1e-228 + {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4}, // 1e-227 + {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A}, // 1e-226 + {0x50C6FF782A838353, 0xBD8430BD08277231}, // 1e-225 + {0xA4F8BF5635246428, 0xECE53CEC4A314EBD}, // 1e-224 + {0x871B7795E136BE99, 0x940F4613AE5ED136}, // 1e-223 + {0x28E2557B59846E3F, 0xB913179899F68584}, // 1e-222 + {0x331AEADA2FE589CF, 0xE757DD7EC07426E5}, // 1e-221 + {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F}, // 1e-220 + {0x0FED077A756B53A9, 0xB4BCA50B065ABE63}, // 1e-219 + {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB}, // 1e-218 + {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD}, // 1e-217 + {0xBD8D794D96AACFB3, 0xB080392CC4349DEC}, // 1e-216 + {0xECF0D7A0FC5583A0, 0xDCA04777F541C567}, // 1e-215 + {0xF41686C49DB57244, 0x89E42CAAF9491B60}, // 1e-214 + {0x311C2875C522CED5, 0xAC5D37D5B79B6239}, // 1e-213 + {0x7D633293366B828B, 0xD77485CB25823AC7}, // 1e-212 + {0xAE5DFF9C02033197, 0x86A8D39EF77164BC}, // 1e-211 + {0xD9F57F830283FDFC, 0xA8530886B54DBDEB}, // 1e-210 + {0xD072DF63C324FD7B, 0xD267CAA862A12D66}, // 1e-209 + {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60}, // 1e-208 + {0x52D9BE85F074E608, 0xA46116538D0DEB78}, // 1e-207 + {0x67902E276C921F8B, 0xCD795BE870516656}, // 1e-206 + {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6}, // 1e-205 + {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3}, // 1e-204 + {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0}, // 1e-203 + {0x796B805720085F81, 0xFAD2A4B13D1B5D6C}, // 1e-202 + {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63}, // 1e-201 + {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC}, // 1e-200 + {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B}, // 1e-199 + {0x751BDD152D4D1C4A, 0x991711052D8BF3C5}, // 1e-198 + {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6}, // 1e-197 + {0x86FB897116C87C34, 0xEF340A98172AACE4}, // 1e-196 + {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E}, // 1e-195 + {0x8974836059CCA109, 0xBAE0A846D2195712}, // 1e-194 + {0x2BD1A438703FC94B, 0xE998D258869FACD7}, // 1e-193 + {0x7B6306A34627DDCF, 0x91FF83775423CC06}, // 1e-192 + {0x1A3BC84C17B1D542, 0xB67F6455292CBF08}, // 1e-191 + {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA}, // 1e-190 + {0x547EB47B7282EE9C, 0x8E938662882AF53E}, // 1e-189 + {0xE99E619A4F23AA43, 0xB23867FB2A35B28D}, // 1e-188 + {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31}, // 1e-187 + {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E}, // 1e-186 + {0x9624AB50B148D445, 0xAE0B158B4738705E}, // 1e-185 + {0x3BADD624DD9B0957, 0xD98DDAEE19068C76}, // 1e-184 + {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9}, // 1e-183 + {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC}, // 1e-182 + {0x7647C3200069671F, 0xD47487CC8470652B}, // 1e-181 + {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B}, // 1e-180 + {0xF468107100525890, 0xA5FB0A17C777CF09}, // 1e-179 + {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC}, // 1e-178 + {0xC6F14CD848405530, 0x81AC1FE293D599BF}, // 1e-177 + {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F}, // 1e-176 + {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B}, // 1e-175 + {0x908F4A166D1DA663, 0xFD442E4688BD304A}, // 1e-174 + {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E}, // 1e-173 + {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA}, // 1e-172 + {0xD12BEE59E68EF47C, 0xF7549530E188C128}, // 1e-171 + {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9}, // 1e-170 + {0xE36A52363C1FAF01, 0xC13A148E3032D6E7}, // 1e-169 + {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1}, // 1e-168 + {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5}, // 1e-167 + {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE}, // 1e-166 + {0x111B495B3464AD21, 0xEBDF661791D60F56}, // 1e-165 + {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995}, // 1e-164 + {0x3D5D514F40EEA742, 0xB84687C269EF3BFB}, // 1e-163 + {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA}, // 1e-162 + {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC}, // 1e-161 + {0x59ED216765690F56, 0xB3F4E093DB73A093}, // 1e-160 + {0x306869C13EC3532C, 0xE0F218B8D25088B8}, // 1e-159 + {0x1E414218C73A13FB, 0x8C974F7383725573}, // 1e-158 + {0xE5D1929EF90898FA, 0xAFBD2350644EEACF}, // 1e-157 + {0xDF45F746B74ABF39, 0xDBAC6C247D62A583}, // 1e-156 + {0x6B8BBA8C328EB783, 0x894BC396CE5DA772}, // 1e-155 + {0x066EA92F3F326564, 0xAB9EB47C81F5114F}, // 1e-154 + {0xC80A537B0EFEFEBD, 0xD686619BA27255A2}, // 1e-153 + {0xBD06742CE95F5F36, 0x8613FD0145877585}, // 1e-152 + {0x2C48113823B73704, 0xA798FC4196E952E7}, // 1e-151 + {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0}, // 1e-150 + {0x9A984D73DBE722FB, 0x82EF85133DE648C4}, // 1e-149 + {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5}, // 1e-148 + {0x318DF905079926A8, 0xCC963FEE10B7D1B3}, // 1e-147 + {0xFDF17746497F7052, 0xFFBBCFE994E5C61F}, // 1e-146 + {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3}, // 1e-145 + {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8}, // 1e-144 + {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B}, // 1e-143 + {0x06BEA10CA65C084E, 0x9C1661A651213E2D}, // 1e-142 + {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8}, // 1e-141 + {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126}, // 1e-140 + {0xF89629465A75E01C, 0x986DDB5C6B3A76B7}, // 1e-139 + {0xF6BBB397F1135823, 0xBE89523386091465}, // 1e-138 + {0x746AA07DED582E2C, 0xEE2BA6C0678B597F}, // 1e-137 + {0xA8C2A44EB4571CDC, 0x94DB483840B717EF}, // 1e-136 + {0x92F34D62616CE413, 0xBA121A4650E4DDEB}, // 1e-135 + {0x77B020BAF9C81D17, 0xE896A0D7E51E1566}, // 1e-134 + {0x0ACE1474DC1D122E, 0x915E2486EF32CD60}, // 1e-133 + {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8}, // 1e-132 + {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6}, // 1e-131 + {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F}, // 1e-130 + {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3}, // 1e-129 + {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0}, // 1e-128 + {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4}, // 1e-127 + {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D}, // 1e-126 + {0xE871C7BF077BA8B7, 0xD89D64D57A607744}, // 1e-125 + {0x11471CD764AD4972, 0x87625F056C7C4A8B}, // 1e-124 + {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D}, // 1e-123 + {0x4AFF1D108D4EC2C3, 0xD389B47879823479}, // 1e-122 + {0xCEDF722A585139BA, 0x843610CB4BF160CB}, // 1e-121 + {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE}, // 1e-120 + {0x733D226229FEEA32, 0xCE947A3DA6A9273E}, // 1e-119 + {0x0806357D5A3F525F, 0x811CCC668829B887}, // 1e-118 + {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8}, // 1e-117 + {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052}, // 1e-116 + {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67}, // 1e-115 + {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0}, // 1e-114 + {0x0A9E795E65D4DF11, 0xC5029163F384A931}, // 1e-113 + {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D}, // 1e-112 + {0x504BCED1BF8E4E45, 0x99EA0196163FA42E}, // 1e-111 + {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39}, // 1e-110 + {0x5D767327BB4E5A4C, 0xF07DA27A82C37088}, // 1e-109 + {0x3A6A07F8D510F86F, 0x964E858C91BA2655}, // 1e-108 + {0x890489F70A55368B, 0xBBE226EFB628AFEA}, // 1e-107 + {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5}, // 1e-106 + {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F}, // 1e-105 + {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB}, // 1e-104 + {0xCC420A6A101D0515, 0xE55990879DDCAABD}, // 1e-103 + {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6}, // 1e-102 + {0x47939822DC96ABF9, 0xB32DF8E9F3546564}, // 1e-101 + {0x59787E2B93BC56F7, 0xDFF9772470297EBD}, // 1e-100 + {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36}, // 1e-99 + {0xEDE622920B6B23F1, 0xAEFAE51477A06B03}, // 1e-98 + {0xE95FAB368E45ECED, 0xDAB99E59958885C4}, // 1e-97 + {0x11DBCB0218EBB414, 0x88B402F7FD75539B}, // 1e-96 + {0xD652BDC29F26A119, 0xAAE103B5FCD2A881}, // 1e-95 + {0x4BE76D3346F0495F, 0xD59944A37C0752A2}, // 1e-94 + {0x6F70A4400C562DDB, 0x857FCAE62D8493A5}, // 1e-93 + {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E}, // 1e-92 + {0x7E2000A41346A7A7, 0xD097AD07A71F26B2}, // 1e-91 + {0x8ED400668C0C28C8, 0x825ECC24C873782F}, // 1e-90 + {0x728900802F0F32FA, 0xA2F67F2DFA90563B}, // 1e-89 + {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA}, // 1e-88 + {0xE2F610C84987BFA8, 0xFEA126B7D78186BC}, // 1e-87 + {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436}, // 1e-86 + {0x91503D1C79720DBB, 0xC6EDE63FA05D3143}, // 1e-85 + {0x75A44C6397CE912A, 0xF8A95FCF88747D94}, // 1e-84 + {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C}, // 1e-83 + {0xFBE85BADCE996168, 0xC24452DA229B021B}, // 1e-82 + {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2}, // 1e-81 + {0xDCCD879FC967D41A, 0x97C560BA6B0919A5}, // 1e-80 + {0x5400E987BBC1C920, 0xBDB6B8E905CB600F}, // 1e-79 + {0x290123E9AAB23B68, 0xED246723473E3813}, // 1e-78 + {0xF9A0B6720AAF6521, 0x9436C0760C86E30B}, // 1e-77 + {0xF808E40E8D5B3E69, 0xB94470938FA89BCE}, // 1e-76 + {0xB60B1D1230B20E04, 0xE7958CB87392C2C2}, // 1e-75 + {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9}, // 1e-74 + {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828}, // 1e-73 + {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232}, // 1e-72 + {0x579C487E5A38AD0E, 0x8D590723948A535F}, // 1e-71 + {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837}, // 1e-70 + {0xF8E431456CF88E65, 0xDCDB1B2798182244}, // 1e-69 + {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B}, // 1e-68 + {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5}, // 1e-67 + {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177}, // 1e-66 + {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA}, // 1e-65 + {0x3F2398D747B36224, 0xA87FEA27A539E9A5}, // 1e-64 + {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E}, // 1e-63 + {0x1953CF68300424AC, 0x83A3EEEEF9153E89}, // 1e-62 + {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B}, // 1e-61 + {0x3792F412CB06794D, 0xCDB02555653131B6}, // 1e-60 + {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11}, // 1e-59 + {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6}, // 1e-58 + {0xF245825A5A445275, 0xC8DE047564D20A8B}, // 1e-57 + {0xEED6E2F0F0D56712, 0xFB158592BE068D2E}, // 1e-56 + {0x55464DD69685606B, 0x9CED737BB6C4183D}, // 1e-55 + {0xAA97E14C3C26B886, 0xC428D05AA4751E4C}, // 1e-54 + {0xD53DD99F4B3066A8, 0xF53304714D9265DF}, // 1e-53 + {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB}, // 1e-52 + {0xDE98520472BDD033, 0xBF8FDB78849A5F96}, // 1e-51 + {0x963E66858F6D4440, 0xEF73D256A5C0F77C}, // 1e-50 + {0xDDE7001379A44AA8, 0x95A8637627989AAD}, // 1e-49 + {0x5560C018580D5D52, 0xBB127C53B17EC159}, // 1e-48 + {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF}, // 1e-47 + {0xCAB3961304CA70E8, 0x9226712162AB070D}, // 1e-46 + {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1}, // 1e-45 + {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05}, // 1e-44 + {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3}, // 1e-43 + {0x55F038B237591ED3, 0xB267ED1940F1C61C}, // 1e-42 + {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3}, // 1e-41 + {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6}, // 1e-40 + {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77}, // 1e-39 + {0x96E7BD358C904A21, 0xD9C7DCED53C72255}, // 1e-38 + {0x7E50D64177DA2E54, 0x881CEA14545C7575}, // 1e-37 + {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2}, // 1e-36 + {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787}, // 1e-35 + {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4}, // 1e-34 + {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61}, // 1e-33 + {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA}, // 1e-32 + {0x80EACF948770CED7, 0x81CEB32C4B43FCF4}, // 1e-31 + {0xA1258379A94D028D, 0xA2425FF75E14FC31}, // 1e-30 + {0x096EE45813A04330, 0xCAD2F7F5359A3B3E}, // 1e-29 + {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D}, // 1e-28 + {0x775EA264CF55347D, 0x9E74D1B791E07E48}, // 1e-27 + {0x95364AFE032A819D, 0xC612062576589DDA}, // 1e-26 + {0x3A83DDBD83F52204, 0xF79687AED3EEC551}, // 1e-25 + {0xC4926A9672793542, 0x9ABE14CD44753B52}, // 1e-24 + {0x75B7053C0F178293, 0xC16D9A0095928A27}, // 1e-23 + {0x5324C68B12DD6338, 0xF1C90080BAF72CB1}, // 1e-22 + {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE}, // 1e-21 + {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA}, // 1e-20 + {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5}, // 1e-19 + {0x3AFF322E62439FCF, 0x9392EE8E921D5D07}, // 1e-18 + {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449}, // 1e-17 + {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B}, // 1e-16 + {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9}, // 1e-15 + {0x538484C19EF38C94, 0xB424DC35095CD80F}, // 1e-14 + {0x2865A5F206B06FB9, 0xE12E13424BB40E13}, // 1e-13 + {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB}, // 1e-12 + {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE}, // 1e-11 + {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE}, // 1e-10 + {0x31680A88F8953030, 0x89705F4136B4A597}, // 1e-9 + {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC}, // 1e-8 + {0x3D32907604691B4C, 0xD6BF94D5E57A42BC}, // 1e-7 + {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5}, // 1e-6 + {0x0FCF80DC33721D53, 0xA7C5AC471B478423}, // 1e-5 + {0xD3C36113404EA4A8, 0xD1B71758E219652B}, // 1e-4 + {0x645A1CAC083126E9, 0x83126E978D4FDF3B}, // 1e-3 + {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A}, // 1e-2 + {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC}, // 1e-1 + {0x0000000000000000, 0x8000000000000000}, // 1e0 + {0x0000000000000000, 0xA000000000000000}, // 1e1 + {0x0000000000000000, 0xC800000000000000}, // 1e2 + {0x0000000000000000, 0xFA00000000000000}, // 1e3 + {0x0000000000000000, 0x9C40000000000000}, // 1e4 + {0x0000000000000000, 0xC350000000000000}, // 1e5 + {0x0000000000000000, 0xF424000000000000}, // 1e6 + {0x0000000000000000, 0x9896800000000000}, // 1e7 + {0x0000000000000000, 0xBEBC200000000000}, // 1e8 + {0x0000000000000000, 0xEE6B280000000000}, // 1e9 + {0x0000000000000000, 0x9502F90000000000}, // 1e10 + {0x0000000000000000, 0xBA43B74000000000}, // 1e11 + {0x0000000000000000, 0xE8D4A51000000000}, // 1e12 + {0x0000000000000000, 0x9184E72A00000000}, // 1e13 + {0x0000000000000000, 0xB5E620F480000000}, // 1e14 + {0x0000000000000000, 0xE35FA931A0000000}, // 1e15 + {0x0000000000000000, 0x8E1BC9BF04000000}, // 1e16 + {0x0000000000000000, 0xB1A2BC2EC5000000}, // 1e17 + {0x0000000000000000, 0xDE0B6B3A76400000}, // 1e18 + {0x0000000000000000, 0x8AC7230489E80000}, // 1e19 + {0x0000000000000000, 0xAD78EBC5AC620000}, // 1e20 + {0x0000000000000000, 0xD8D726B7177A8000}, // 1e21 + {0x0000000000000000, 0x878678326EAC9000}, // 1e22 + {0x0000000000000000, 0xA968163F0A57B400}, // 1e23 + {0x0000000000000000, 0xD3C21BCECCEDA100}, // 1e24 + {0x0000000000000000, 0x84595161401484A0}, // 1e25 + {0x0000000000000000, 0xA56FA5B99019A5C8}, // 1e26 + {0x0000000000000000, 0xCECB8F27F4200F3A}, // 1e27 + {0x4000000000000000, 0x813F3978F8940984}, // 1e28 + {0x5000000000000000, 0xA18F07D736B90BE5}, // 1e29 + {0xA400000000000000, 0xC9F2C9CD04674EDE}, // 1e30 + {0x4D00000000000000, 0xFC6F7C4045812296}, // 1e31 + {0xF020000000000000, 0x9DC5ADA82B70B59D}, // 1e32 + {0x6C28000000000000, 0xC5371912364CE305}, // 1e33 + {0xC732000000000000, 0xF684DF56C3E01BC6}, // 1e34 + {0x3C7F400000000000, 0x9A130B963A6C115C}, // 1e35 + {0x4B9F100000000000, 0xC097CE7BC90715B3}, // 1e36 + {0x1E86D40000000000, 0xF0BDC21ABB48DB20}, // 1e37 + {0x1314448000000000, 0x96769950B50D88F4}, // 1e38 + {0x17D955A000000000, 0xBC143FA4E250EB31}, // 1e39 + {0x5DCFAB0800000000, 0xEB194F8E1AE525FD}, // 1e40 + {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE}, // 1e41 + {0xF14A3D9E40000000, 0xB7ABC627050305AD}, // 1e42 + {0x6D9CCD05D0000000, 0xE596B7B0C643C719}, // 1e43 + {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F}, // 1e44 + {0xDDA2802C8A800000, 0xB35DBF821AE4F38B}, // 1e45 + {0xD50B2037AD200000, 0xE0352F62A19E306E}, // 1e46 + {0x4526F422CC340000, 0x8C213D9DA502DE45}, // 1e47 + {0x9670B12B7F410000, 0xAF298D050E4395D6}, // 1e48 + {0x3C0CDD765F114000, 0xDAF3F04651D47B4C}, // 1e49 + {0xA5880A69FB6AC800, 0x88D8762BF324CD0F}, // 1e50 + {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053}, // 1e51 + {0x72A4904598D6D880, 0xD5D238A4ABE98068}, // 1e52 + {0x47A6DA2B7F864750, 0x85A36366EB71F041}, // 1e53 + {0x999090B65F67D924, 0xA70C3C40A64E6C51}, // 1e54 + {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765}, // 1e55 + {0xBFF8F10E7A8921A4, 0x82818F1281ED449F}, // 1e56 + {0xAFF72D52192B6A0D, 0xA321F2D7226895C7}, // 1e57 + {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39}, // 1e58 + {0x02F236D04753D5B4, 0xFEE50B7025C36A08}, // 1e59 + {0x01D762422C946590, 0x9F4F2726179A2245}, // 1e60 + {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6}, // 1e61 + {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B}, // 1e62 + {0x63CC55F49F88EB2F, 0x9B934C3B330C8577}, // 1e63 + {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5}, // 1e64 + {0x8BEF464E3945EF7A, 0xF316271C7FC3908A}, // 1e65 + {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56}, // 1e66 + {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC}, // 1e67 + {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27}, // 1e68 + {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8}, // 1e69 + {0xB3E2FD538E122B44, 0xB975D6B6EE39E436}, // 1e70 + {0x60DBBCA87196B616, 0xE7D34C64A9C85D44}, // 1e71 + {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A}, // 1e72 + {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD}, // 1e73 + {0xC696963C7EED2DD1, 0xE264589A4DCDAB14}, // 1e74 + {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC}, // 1e75 + {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8}, // 1e76 + {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912}, // 1e77 + {0x6E3569326C784337, 0x8A2DBF142DFCC7AB}, // 1e78 + {0x49C2C37F07965404, 0xACB92ED9397BF996}, // 1e79 + {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB}, // 1e80 + {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD}, // 1e81 + {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC}, // 1e82 + {0xF50A3FA490C30190, 0xD2D80DB02AABD62B}, // 1e83 + {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB}, // 1e84 + {0x577001B891185938, 0xA4B8CAB1A1563F52}, // 1e85 + {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26}, // 1e86 + {0x544F8158315B05B4, 0x80B05E5AC60B6178}, // 1e87 + {0x696361AE3DB1C721, 0xA0DC75F1778E39D6}, // 1e88 + {0x03BC3A19CD1E38E9, 0xC913936DD571C84C}, // 1e89 + {0x04AB48A04065C723, 0xFB5878494ACE3A5F}, // 1e90 + {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B}, // 1e91 + {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A}, // 1e92 + {0xCA8F44EC7EE36479, 0xF5746577930D6500}, // 1e93 + {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20}, // 1e94 + {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8}, // 1e95 + {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2}, // 1e96 + {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5}, // 1e97 + {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F}, // 1e98 + {0xF52D09D71A3293BD, 0xEA1575143CF97226}, // 1e99 + {0x593C2626705F9C56, 0x924D692CA61BE758}, // 1e100 + {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E}, // 1e101 + {0x0B6DFB9C0F956447, 0xE498F455C38B997A}, // 1e102 + {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC}, // 1e103 + {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7}, // 1e104 + {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1}, // 1e105 + {0xBD79E0D20082EE74, 0x8B865B215899F46C}, // 1e106 + {0xECD8590680A3AA11, 0xAE67F1E9AEC07187}, // 1e107 + {0xE80E6F4820CC9495, 0xDA01EE641A708DE9}, // 1e108 + {0x3109058D147FDCDD, 0x884134FE908658B2}, // 1e109 + {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE}, // 1e110 + {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96}, // 1e111 + {0x03E2CF6BC604DDB0, 0x850FADC09923329E}, // 1e112 + {0x84DB8346B786151C, 0xA6539930BF6BFF45}, // 1e113 + {0xE612641865679A63, 0xCFE87F7CEF46FF16}, // 1e114 + {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E}, // 1e115 + {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749}, // 1e116 + {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C}, // 1e117 + {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63}, // 1e118 + {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E}, // 1e119 + {0xB281E1FD541501B8, 0xC646D63501A1511D}, // 1e120 + {0x1F225A7CA91A4226, 0xF7D88BC24209A565}, // 1e121 + {0x3375788DE9B06958, 0x9AE757596946075F}, // 1e122 + {0x0052D6B1641C83AE, 0xC1A12D2FC3978937}, // 1e123 + {0xC0678C5DBD23A49A, 0xF209787BB47D6B84}, // 1e124 + {0xF840B7BA963646E0, 0x9745EB4D50CE6332}, // 1e125 + {0xB650E5A93BC3D898, 0xBD176620A501FBFF}, // 1e126 + {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF}, // 1e127 + {0xC66F336C36B10137, 0x93BA47C980E98CDF}, // 1e128 + {0xB80B0047445D4184, 0xB8A8D9BBE123F017}, // 1e129 + {0xA60DC059157491E5, 0xE6D3102AD96CEC1D}, // 1e130 + {0x87C89837AD68DB2F, 0x9043EA1AC7E41392}, // 1e131 + {0x29BABE4598C311FB, 0xB454E4A179DD1877}, // 1e132 + {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94}, // 1e133 + {0x1899E4A65F58660C, 0x8CE2529E2734BB1D}, // 1e134 + {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4}, // 1e135 + {0x76707543F4FA1F73, 0xDC21A1171D42645D}, // 1e136 + {0x6A06494A791C53A8, 0x899504AE72497EBA}, // 1e137 + {0x0487DB9D17636892, 0xABFA45DA0EDBDE69}, // 1e138 + {0x45A9D2845D3C42B6, 0xD6F8D7509292D603}, // 1e139 + {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2}, // 1e140 + {0x8E6CAC7768D7141E, 0xA7F26836F282B732}, // 1e141 + {0x3207D795430CD926, 0xD1EF0244AF2364FF}, // 1e142 + {0x7F44E6BD49E807B8, 0x8335616AED761F1F}, // 1e143 + {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7}, // 1e144 + {0x36DBA887C37A8C0F, 0xCD036837130890A1}, // 1e145 + {0xC2494954DA2C9789, 0x802221226BE55A64}, // 1e146 + {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD}, // 1e147 + {0x6F92829494E5ACC7, 0xC83553C5C8965D3D}, // 1e148 + {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C}, // 1e149 + {0xFF2A760414536EFB, 0x9C69A97284B578D7}, // 1e150 + {0xFEF5138519684ABA, 0xC38413CF25E2D70D}, // 1e151 + {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1}, // 1e152 + {0xEF2F773FFBD97A61, 0x98BF2F79D5993802}, // 1e153 + {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603}, // 1e154 + {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784}, // 1e155 + {0xDD945A747BF26183, 0x952AB45CFA97A0B2}, // 1e156 + {0x94F971119AEEF9E4, 0xBA756174393D88DF}, // 1e157 + {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17}, // 1e158 + {0xAC62E055C10AB33A, 0x91ABB422CCB812EE}, // 1e159 + {0x577B986B314D6009, 0xB616A12B7FE617AA}, // 1e160 + {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94}, // 1e161 + {0x14588F13BE847307, 0x8E41ADE9FBEBC27D}, // 1e162 + {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C}, // 1e163 + {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3}, // 1e164 + {0x25DE7BB9480D5854, 0x8AEC23D680043BEE}, // 1e165 + {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9}, // 1e166 + {0x1B2BA1518094DA04, 0xD910F7FF28069DA4}, // 1e167 + {0x90FB44D2F05D0842, 0x87AA9AFF79042286}, // 1e168 + {0x353A1607AC744A53, 0xA99541BF57452B28}, // 1e169 + {0x42889B8997915CE8, 0xD3FA922F2D1675F2}, // 1e170 + {0x69956135FEBADA11, 0x847C9B5D7C2E09B7}, // 1e171 + {0x43FAB9837E699095, 0xA59BC234DB398C25}, // 1e172 + {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E}, // 1e173 + {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D}, // 1e174 + {0x6462D92A69731732, 0xA1BA1BA79E1632DC}, // 1e175 + {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93}, // 1e176 + {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78}, // 1e177 + {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB}, // 1e178 + {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916}, // 1e179 + {0x8AAD549E57273D45, 0xF6C69A72A3989F5B}, // 1e180 + {0x36AC54E2F678864B, 0x9A3C2087A63F6399}, // 1e181 + {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F}, // 1e182 + {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F}, // 1e183 + {0x9F644AE5A4B1B325, 0x969EB7C47859E743}, // 1e184 + {0x873D5D9F0DDE1FEE, 0xBC4665B596706114}, // 1e185 + {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959}, // 1e186 + {0x09A7F12442D588F2, 0x9316FF75DD87CBD8}, // 1e187 + {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE}, // 1e188 + {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81}, // 1e189 + {0xF96E017D694487BC, 0x8FA475791A569D10}, // 1e190 + {0x37C981DCC395A9AC, 0xB38D92D760EC4455}, // 1e191 + {0x85BBE253F47B1417, 0xE070F78D3927556A}, // 1e192 + {0x93956D7478CCEC8E, 0x8C469AB843B89562}, // 1e193 + {0x387AC8D1970027B2, 0xAF58416654A6BABB}, // 1e194 + {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A}, // 1e195 + {0x441FECE3BDF81F03, 0x88FCF317F22241E2}, // 1e196 + {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A}, // 1e197 + {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1}, // 1e198 + {0xF6872D5667844E49, 0x85C7056562757456}, // 1e199 + {0xB428F8AC016561DB, 0xA738C6BEBB12D16C}, // 1e200 + {0xE13336D701BEBA52, 0xD106F86E69D785C7}, // 1e201 + {0xECC0024661173473, 0x82A45B450226B39C}, // 1e202 + {0x27F002D7F95D0190, 0xA34D721642B06084}, // 1e203 + {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5}, // 1e204 + {0x7E67047175A15271, 0xFF290242C83396CE}, // 1e205 + {0x0F0062C6E984D386, 0x9F79A169BD203E41}, // 1e206 + {0x52C07B78A3E60868, 0xC75809C42C684DD1}, // 1e207 + {0xA7709A56CCDF8A82, 0xF92E0C3537826145}, // 1e208 + {0x88A66076400BB691, 0x9BBCC7A142B17CCB}, // 1e209 + {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE}, // 1e210 + {0x0583F6B8C4124D43, 0xF356F7EBF83552FE}, // 1e211 + {0xC3727A337A8B704A, 0x98165AF37B2153DE}, // 1e212 + {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6}, // 1e213 + {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C}, // 1e214 + {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7}, // 1e215 + {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1}, // 1e216 + {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99}, // 1e217 + {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0}, // 1e218 + {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8}, // 1e219 + {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A}, // 1e220 + {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24}, // 1e221 + {0x7425A83E872C5F47, 0xB10D8E1456105DAD}, // 1e222 + {0xD12F124E28F77719, 0xDD50F1996B947518}, // 1e223 + {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F}, // 1e224 + {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B}, // 1e225 + {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A}, // 1e226 + {0x65ACFAEC34810A71, 0x8714A775E3E95C78}, // 1e227 + {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396}, // 1e228 + {0x1EDE48111209A050, 0xD31045A8341CA07C}, // 1e229 + {0x934AED0AAB460432, 0x83EA2B892091E44D}, // 1e230 + {0xF81DA84D5617853F, 0xA4E4B66B68B65D60}, // 1e231 + {0x36251260AB9D668E, 0xCE1DE40642E3F4B9}, // 1e232 + {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3}, // 1e233 + {0xB24CF65B8612F81F, 0xA1075A24E4421730}, // 1e234 + {0xDEE033F26797B627, 0xC94930AE1D529CFC}, // 1e235 + {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C}, // 1e236 + {0x8E1F289560EE864E, 0x9D412E0806E88AA5}, // 1e237 + {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E}, // 1e238 + {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2}, // 1e239 + {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765}, // 1e240 + {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F}, // 1e241 + {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E}, // 1e242 + {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9}, // 1e243 + {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F}, // 1e244 + {0x84C86189216DC5ED, 0xEA53DF5FD18D5513}, // 1e245 + {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C}, // 1e246 + {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77}, // 1e247 + {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515}, // 1e248 + {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D}, // 1e249 + {0x743E20E9EF511012, 0xB2C71D5BCA9023F8}, // 1e250 + {0x914DA9246B255416, 0xDF78E4B2BD342CF6}, // 1e251 + {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A}, // 1e252 + {0xA184AC2473B529B1, 0xAE9672ABA3D0C320}, // 1e253 + {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8}, // 1e254 + {0x7E2FA67C7A658892, 0x8865899617FB1871}, // 1e255 + {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D}, // 1e256 + {0x552A74227F3EA565, 0xD51EA6FA85785631}, // 1e257 + {0xD53A88958F87275F, 0x8533285C936B35DE}, // 1e258 + {0x8A892ABAF368F137, 0xA67FF273B8460356}, // 1e259 + {0x2D2B7569B0432D85, 0xD01FEF10A657842C}, // 1e260 + {0x9C3B29620E29FC73, 0x8213F56A67F6B29B}, // 1e261 + {0x8349F3BA91B47B8F, 0xA298F2C501F45F42}, // 1e262 + {0x241C70A936219A73, 0xCB3F2F7642717713}, // 1e263 + {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7}, // 1e264 + {0xF4363804324A40AA, 0x9EC95D1463E8A506}, // 1e265 + {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48}, // 1e266 + {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA}, // 1e267 + {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128}, // 1e268 + {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72}, // 1e269 + {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF}, // 1e270 + {0xD5BE0503E085D813, 0x976E41088617CA01}, // 1e271 + {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82}, // 1e272 + {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2}, // 1e273 + {0xCABB90E5C942B503, 0x93E1AB8252F33B45}, // 1e274 + {0x3D6A751F3B936243, 0xB8DA1662E7B00A17}, // 1e275 + {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D}, // 1e276 + {0x27FB2B80668B24C5, 0x906A617D450187E2}, // 1e277 + {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA}, // 1e278 + {0x5E7873F8A0396973, 0xE1A63853BBD26451}, // 1e279 + {0xDB0B487B6423E1E8, 0x8D07E33455637EB2}, // 1e280 + {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F}, // 1e281 + {0x7641A140CC7810FB, 0xDC5C5301C56B75F7}, // 1e282 + {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA}, // 1e283 + {0x546345FA9FBDCD44, 0xAC2820D9623BF429}, // 1e284 + {0xA97C177947AD4095, 0xD732290FBACAF133}, // 1e285 + {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0}, // 1e286 + {0x5C68F256BFFF5A74, 0xA81F301449EE8C70}, // 1e287 + {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C}, // 1e288 +}; + +// wuffs_base__private_implementation__f64_powers_of_10 holds powers of 10 that +// can be exactly represented by a float64 (what C calls a double). +static const double wuffs_base__private_implementation__f64_powers_of_10[23] = { + 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11, + 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22, +}; + +// ---------------- IEEE 754 Floating Point + +WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 // +wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) { + uint64_t u = 0; + if (sizeof(uint64_t) == sizeof(double)) { + memcpy(&u, &f, sizeof(uint64_t)); + } + uint16_t neg = ((uint16_t)((u >> 63) << 15)); + u &= 0x7FFFFFFFFFFFFFFF; + uint64_t exp = u >> 52; + uint64_t man = u & 0x000FFFFFFFFFFFFF; + + if (exp == 0x7FF) { + if (man == 0) { // Infinity. + wuffs_base__lossy_value_u16 ret; + ret.value = neg | 0x7C00; + ret.lossy = false; + return ret; + } + // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most + // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9 + // bits of ret.value so that the 10-bit mantissa is non-zero. + wuffs_base__lossy_value_u16 ret; + ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42)); + ret.lossy = false; + return ret; + + } else if (exp > 0x40E) { // Truncate to the largest finite f16. + wuffs_base__lossy_value_u16 ret; + ret.value = neg | 0x7BFF; + ret.lossy = true; + return ret; + + } else if (exp <= 0x3E6) { // Truncate to zero. + wuffs_base__lossy_value_u16 ret; + ret.value = neg; + ret.lossy = (u != 0); + return ret; + + } else if (exp <= 0x3F0) { // Normal f64, subnormal f16. + // Convert from a 53-bit mantissa (after realizing the implicit bit) to a + // 10-bit mantissa and then adjust for the exponent. + man |= 0x0010000000000000; + uint32_t shift = ((uint32_t)(1051 - exp)); // 1051 = 0x3F0 + 53 - 10. + uint64_t shifted_man = man >> shift; + wuffs_base__lossy_value_u16 ret; + ret.value = neg | ((uint16_t)shifted_man); + ret.lossy = (shifted_man << shift) != man; + return ret; + } + + // Normal f64, normal f16. + + // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits. + exp = (exp - 1008) << 10; // 1008 = 1023 - 15 = 0x3FF - 0xF. + + // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit + // mantissa (again excluding the implicit bit). We lose some information if + // any of the bottom 42 bits are non-zero. + wuffs_base__lossy_value_u16 ret; + ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42)); + ret.lossy = (man << 22) != 0; + return ret; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 // +wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) { + uint64_t u = 0; + if (sizeof(uint64_t) == sizeof(double)) { + memcpy(&u, &f, sizeof(uint64_t)); + } + uint32_t neg = ((uint32_t)(u >> 63)) << 31; + u &= 0x7FFFFFFFFFFFFFFF; + uint64_t exp = u >> 52; + uint64_t man = u & 0x000FFFFFFFFFFFFF; + + if (exp == 0x7FF) { + if (man == 0) { // Infinity. + wuffs_base__lossy_value_u32 ret; + ret.value = neg | 0x7F800000; + ret.lossy = false; + return ret; + } + // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most + // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22 + // bits of ret.value so that the 23-bit mantissa is non-zero. + wuffs_base__lossy_value_u32 ret; + ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29)); + ret.lossy = false; + return ret; + + } else if (exp > 0x47E) { // Truncate to the largest finite f32. + wuffs_base__lossy_value_u32 ret; + ret.value = neg | 0x7F7FFFFF; + ret.lossy = true; + return ret; + + } else if (exp <= 0x369) { // Truncate to zero. + wuffs_base__lossy_value_u32 ret; + ret.value = neg; + ret.lossy = (u != 0); + return ret; + + } else if (exp <= 0x380) { // Normal f64, subnormal f32. + // Convert from a 53-bit mantissa (after realizing the implicit bit) to a + // 23-bit mantissa and then adjust for the exponent. + man |= 0x0010000000000000; + uint32_t shift = ((uint32_t)(926 - exp)); // 926 = 0x380 + 53 - 23. + uint64_t shifted_man = man >> shift; + wuffs_base__lossy_value_u32 ret; + ret.value = neg | ((uint32_t)shifted_man); + ret.lossy = (shifted_man << shift) != man; + return ret; + } + + // Normal f64, normal f32. + + // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits. + exp = (exp - 896) << 23; // 896 = 1023 - 127 = 0x3FF - 0x7F. + + // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit + // mantissa (again excluding the implicit bit). We lose some information if + // any of the bottom 29 bits are non-zero. + wuffs_base__lossy_value_u32 ret; + ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29)); + ret.lossy = (man << 35) != 0; + return ret; +} + +// -------- + +#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE 2047 +#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION 800 + +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL is the largest N +// such that ((10 << N) < (1 << 64)). +#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL 60 + +// wuffs_base__private_implementation__high_prec_dec (abbreviated as HPD) is a +// fixed precision floating point decimal number, augmented with ±infinity +// values, but it cannot represent NaN (Not a Number). +// +// "High precision" means that the mantissa holds 800 decimal digits. 800 is +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION. +// +// An HPD isn't for general purpose arithmetic, only for conversions to and +// from IEEE 754 double-precision floating point, where the largest and +// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324. +// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047 +// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION and +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. +// +// digits[.. num_digits] are the number's digits in big-endian order. The +// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7' +// is the ASCII value 0x37. +// +// decimal_point is the index (within digits) of the decimal point. It may be +// negative or be larger than num_digits, in which case the explicit digits are +// padded with implicit zeroes. +// +// For example, if num_digits is 3 and digits is "\x07\x08\x09": +// - A decimal_point of -2 means ".00789" +// - A decimal_point of -1 means ".0789" +// - A decimal_point of +0 means ".789" +// - A decimal_point of +1 means "7.89" +// - A decimal_point of +2 means "78.9" +// - A decimal_point of +3 means "789." +// - A decimal_point of +4 means "7890." +// - A decimal_point of +5 means "78900." +// +// As above, a decimal_point higher than +2047 means that the overall value is +// infinity, lower than -2047 means zero. +// +// negative is a sign bit. An HPD can distinguish positive and negative zero. +// +// truncated is whether there are more than +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION digits, and at +// least one of those extra digits are non-zero. The existence of long-tail +// digits can affect rounding. +// +// The "all fields are zero" value is valid, and represents the number +0. +typedef struct wuffs_base__private_implementation__high_prec_dec__struct { + uint32_t num_digits; + int32_t decimal_point; + bool negative; + bool truncated; + uint8_t digits[WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION]; +} wuffs_base__private_implementation__high_prec_dec; + +// wuffs_base__private_implementation__high_prec_dec__trim trims trailing +// zeroes from the h->digits[.. h->num_digits] slice. They have no benefit, +// since we explicitly track h->decimal_point. +// +// Preconditions: +// - h is non-NULL. +static inline void // +wuffs_base__private_implementation__high_prec_dec__trim( + wuffs_base__private_implementation__high_prec_dec* h) { + while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) { + h->num_digits--; + } +} + +// wuffs_base__private_implementation__high_prec_dec__assign sets h to +// represent the number x. +// +// Preconditions: +// - h is non-NULL. +static void // +wuffs_base__private_implementation__high_prec_dec__assign( + wuffs_base__private_implementation__high_prec_dec* h, + uint64_t x, + bool negative) { + uint32_t n = 0; + + // Set h->digits. + if (x > 0) { + // Calculate the digits, working right-to-left. After we determine n (how + // many digits there are), copy from buf to h->digits. + // + // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to + // copy a constant number of bytes than a variable number (20 instead of + // n). Make buf large enough (and start writing to it from the middle) so + // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)]. + uint8_t buf[40] = {0}; + uint8_t* ptr = &buf[20]; + do { + uint64_t remaining = x / 10; + x -= remaining * 10; + ptr--; + *ptr = (uint8_t)x; + n++; + x = remaining; + } while (x > 0); + memcpy(h->digits, ptr, 20); + } + + // Set h's other fields. + h->num_digits = n; + h->decimal_point = (int32_t)n; + h->negative = negative; + h->truncated = false; + wuffs_base__private_implementation__high_prec_dec__trim(h); +} + +static wuffs_base__status // +wuffs_base__private_implementation__high_prec_dec__parse( + wuffs_base__private_implementation__high_prec_dec* h, + wuffs_base__slice_u8 s, + uint32_t options) { + if (!h) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + h->num_digits = 0; + h->decimal_point = 0; + h->negative = false; + h->truncated = false; + + uint8_t* p = s.ptr; + uint8_t* q = s.ptr + s.len; + + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (;; p++) { + if (p >= q) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } else if (*p != '_') { + break; + } + } + } + + // Parse sign. + do { + if (*p == '+') { + p++; + } else if (*p == '-') { + h->negative = true; + p++; + } else { + break; + } + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (;; p++) { + if (p >= q) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } else if (*p != '_') { + break; + } + } + } + } while (0); + + // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each + // limb in this if-else chain: + // - "0.789" + // - "1002.789" + // - ".789" + // - Other (invalid input). + uint32_t nd = 0; + int32_t dp = 0; + bool no_digits_before_separator = false; + if (('0' == *p) && + !(options & + WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) { + p++; + for (;; p++) { + if (p >= q) { + goto after_all; + } else if (*p == + ((options & + WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.')) { + p++; + goto after_sep; + } else if ((*p == 'E') || (*p == 'e')) { + p++; + goto after_exp; + } else if ((*p != '_') || + !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + } + + } else if (('0' <= *p) && (*p <= '9')) { + if (*p == '0') { + for (; (p < q) && (*p == '0'); p++) { + } + } else { + h->digits[nd++] = (uint8_t)(*p - '0'); + dp = (int32_t)nd; + p++; + } + + for (;; p++) { + if (p >= q) { + goto after_all; + } else if (('0' <= *p) && (*p <= '9')) { + if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[nd++] = (uint8_t)(*p - '0'); + dp = (int32_t)nd; + } else if ('0' != *p) { + // Long-tail non-zeroes set the truncated bit. + h->truncated = true; + } + } else if (*p == + ((options & + WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.')) { + p++; + goto after_sep; + } else if ((*p == 'E') || (*p == 'e')) { + p++; + goto after_exp; + } else if ((*p != '_') || + !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + } + + } else if (*p == ((options & + WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.')) { + p++; + no_digits_before_separator = true; + + } else { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + +after_sep: + for (;; p++) { + if (p >= q) { + goto after_all; + } else if ('0' == *p) { + if (nd == 0) { + // Track leading zeroes implicitly. + dp--; + } else if (nd < + WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[nd++] = (uint8_t)(*p - '0'); + } + } else if (('0' < *p) && (*p <= '9')) { + if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[nd++] = (uint8_t)(*p - '0'); + } else { + // Long-tail non-zeroes set the truncated bit. + h->truncated = true; + } + } else if ((*p == 'E') || (*p == 'e')) { + p++; + goto after_exp; + } else if ((*p != '_') || + !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + } + +after_exp: + do { + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (;; p++) { + if (p >= q) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } else if (*p != '_') { + break; + } + } + } + + int32_t exp_sign = +1; + if (*p == '+') { + p++; + } else if (*p == '-') { + exp_sign = -1; + p++; + } + + int32_t exp = 0; + const int32_t exp_large = + WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + + WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION; + bool saw_exp_digits = false; + for (; p < q; p++) { + if ((*p == '_') && + (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + // No-op. + } else if (('0' <= *p) && (*p <= '9')) { + saw_exp_digits = true; + if (exp < exp_large) { + exp = (10 * exp) + ((int32_t)(*p - '0')); + } + } else { + break; + } + } + if (!saw_exp_digits) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + dp += exp_sign * exp; + } while (0); + +after_all: + if (p != q) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + h->num_digits = nd; + if (nd == 0) { + if (no_digits_before_separator) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + h->decimal_point = 0; + } else if (dp < + -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { + h->decimal_point = + -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE - 1; + } else if (dp > + +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { + h->decimal_point = + +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + 1; + } else { + h->decimal_point = dp; + } + wuffs_base__private_implementation__high_prec_dec__trim(h); + return wuffs_base__make_status(NULL); +} + +// -------- + +// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits +// returns the number of additional decimal digits when left-shifting by shift. +// +// See below for preconditions. +static uint32_t // +wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits( + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t shift) { + // Masking with 0x3F should be unnecessary (assuming the preconditions) but + // it's cheap and ensures that we don't overflow the + // wuffs_base__private_implementation__hpd_left_shift array. + shift &= 63; + + uint32_t x_a = wuffs_base__private_implementation__hpd_left_shift[shift]; + uint32_t x_b = wuffs_base__private_implementation__hpd_left_shift[shift + 1]; + uint32_t num_new_digits = x_a >> 11; + uint32_t pow5_a = 0x7FF & x_a; + uint32_t pow5_b = 0x7FF & x_b; + + const uint8_t* pow5 = + &wuffs_base__private_implementation__powers_of_5[pow5_a]; + uint32_t i = 0; + uint32_t n = pow5_b - pow5_a; + for (; i < n; i++) { + if (i >= h->num_digits) { + return num_new_digits - 1; + } else if (h->digits[i] == pow5[i]) { + continue; + } else if (h->digits[i] < pow5[i]) { + return num_new_digits - 1; + } else { + return num_new_digits; + } + } + return num_new_digits; +} + +// -------- + +// wuffs_base__private_implementation__high_prec_dec__rounded_integer returns +// the integral (non-fractional) part of h, provided that it is 18 or fewer +// decimal digits. For 19 or more digits, it returns UINT64_MAX. Note that: +// - (1 << 53) is 9007199254740992, which has 16 decimal digits. +// - (1 << 56) is 72057594037927936, which has 17 decimal digits. +// - (1 << 59) is 576460752303423488, which has 18 decimal digits. +// - (1 << 63) is 9223372036854775808, which has 19 decimal digits. +// and that IEEE 754 double precision has 52 mantissa bits. +// +// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8. +// +// h's negative bit is ignored: rounding -8.6 returns 9. +// +// See below for preconditions. +static uint64_t // +wuffs_base__private_implementation__high_prec_dec__rounded_integer( + wuffs_base__private_implementation__high_prec_dec* h) { + if ((h->num_digits == 0) || (h->decimal_point < 0)) { + return 0; + } else if (h->decimal_point > 18) { + return UINT64_MAX; + } + + uint32_t dp = (uint32_t)(h->decimal_point); + uint64_t n = 0; + uint32_t i = 0; + for (; i < dp; i++) { + n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0); + } + + bool round_up = false; + if (dp < h->num_digits) { + round_up = h->digits[dp] >= 5; + if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) { + // We are exactly halfway. If we're truncated, round up, otherwise round + // to even. + round_up = h->truncated || // + ((dp > 0) && (1 & h->digits[dp - 1])); + } + } + if (round_up) { + n++; + } + + return n; +} + +// wuffs_base__private_implementation__high_prec_dec__small_xshift shifts h's +// number (where 'x' is 'l' or 'r' for left or right) by a small shift value. +// +// Preconditions: +// - h is non-NULL. +// - h->decimal_point is "not extreme". +// - shift is non-zero. +// - shift is "a small shift". +// +// "Not extreme" means within +// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. +// +// "A small shift" means not more than +// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. +// +// wuffs_base__private_implementation__high_prec_dec__rounded_integer and +// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits +// have the same preconditions. +// +// wuffs_base__private_implementation__high_prec_dec__lshift keeps the first +// two preconditions but not the last two. Its shift argument is signed and +// does not need to be "small": zero is a no-op, positive means left shift and +// negative means right shift. + +static void // +wuffs_base__private_implementation__high_prec_dec__small_lshift( + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t shift) { + if (h->num_digits == 0) { + return; + } + uint32_t num_new_digits = + wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits( + h, shift); + uint32_t rx = h->num_digits - 1; // Read index. + uint32_t wx = h->num_digits - 1 + num_new_digits; // Write index. + uint64_t n = 0; + + // Repeat: pick up a digit, put down a digit, right to left. + while (((int32_t)rx) >= 0) { + n += ((uint64_t)(h->digits[rx])) << shift; + uint64_t quo = n / 10; + uint64_t rem = n - (10 * quo); + if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[wx] = (uint8_t)rem; + } else if (rem > 0) { + h->truncated = true; + } + n = quo; + wx--; + rx--; + } + + // Put down leading digits, right to left. + while (n > 0) { + uint64_t quo = n / 10; + uint64_t rem = n - (10 * quo); + if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[wx] = (uint8_t)rem; + } else if (rem > 0) { + h->truncated = true; + } + n = quo; + wx--; + } + + // Finish. + h->num_digits += num_new_digits; + if (h->num_digits > + WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->num_digits = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION; + } + h->decimal_point += (int32_t)num_new_digits; + wuffs_base__private_implementation__high_prec_dec__trim(h); +} + +static void // +wuffs_base__private_implementation__high_prec_dec__small_rshift( + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t shift) { + uint32_t rx = 0; // Read index. + uint32_t wx = 0; // Write index. + uint64_t n = 0; + + // Pick up enough leading digits to cover the first shift. + while ((n >> shift) == 0) { + if (rx < h->num_digits) { + // Read a digit. + n = (10 * n) + h->digits[rx++]; + } else if (n == 0) { + // h's number used to be zero and remains zero. + return; + } else { + // Read sufficient implicit trailing zeroes. + while ((n >> shift) == 0) { + n = 10 * n; + rx++; + } + break; + } + } + h->decimal_point -= ((int32_t)(rx - 1)); + if (h->decimal_point < + -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { + // After the shift, h's number is effectively zero. + h->num_digits = 0; + h->decimal_point = 0; + h->truncated = false; + return; + } + + // Repeat: pick up a digit, put down a digit, left to right. + uint64_t mask = (((uint64_t)(1)) << shift) - 1; + while (rx < h->num_digits) { + uint8_t new_digit = ((uint8_t)(n >> shift)); + n = (10 * (n & mask)) + h->digits[rx++]; + h->digits[wx++] = new_digit; + } + + // Put down trailing digits, left to right. + while (n > 0) { + uint8_t new_digit = ((uint8_t)(n >> shift)); + n = 10 * (n & mask); + if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { + h->digits[wx++] = new_digit; + } else if (new_digit > 0) { + h->truncated = true; + } + } + + // Finish. + h->num_digits = wx; + wuffs_base__private_implementation__high_prec_dec__trim(h); +} + +static void // +wuffs_base__private_implementation__high_prec_dec__lshift( + wuffs_base__private_implementation__high_prec_dec* h, + int32_t shift) { + if (shift > 0) { + while (shift > +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { + wuffs_base__private_implementation__high_prec_dec__small_lshift( + h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL); + shift -= WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; + } + wuffs_base__private_implementation__high_prec_dec__small_lshift( + h, ((uint32_t)(+shift))); + } else if (shift < 0) { + while (shift < -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { + wuffs_base__private_implementation__high_prec_dec__small_rshift( + h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL); + shift += WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; + } + wuffs_base__private_implementation__high_prec_dec__small_rshift( + h, ((uint32_t)(-shift))); + } +} + +// -------- + +// wuffs_base__private_implementation__high_prec_dec__round_etc rounds h's +// number. For those functions that take an n argument, rounding produces at +// most n digits (which is not necessarily at most n decimal places). Negative +// n values are ignored, as well as any n greater than or equal to h's number +// of digits. The etc__round_just_enough function implicitly chooses an n to +// implement WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION. +// +// Preconditions: +// - h is non-NULL. +// - h->decimal_point is "not extreme". +// +// "Not extreme" means within +// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. + +static void // +wuffs_base__private_implementation__high_prec_dec__round_down( + wuffs_base__private_implementation__high_prec_dec* h, + int32_t n) { + if ((n < 0) || (h->num_digits <= (uint32_t)n)) { + return; + } + h->num_digits = (uint32_t)(n); + wuffs_base__private_implementation__high_prec_dec__trim(h); +} + +static void // +wuffs_base__private_implementation__high_prec_dec__round_up( + wuffs_base__private_implementation__high_prec_dec* h, + int32_t n) { + if ((n < 0) || (h->num_digits <= (uint32_t)n)) { + return; + } + + for (n--; n >= 0; n--) { + if (h->digits[n] < 9) { + h->digits[n]++; + h->num_digits = (uint32_t)(n + 1); + return; + } + } + + // The number is all 9s. Change to a single 1 and adjust the decimal point. + h->digits[0] = 1; + h->num_digits = 1; + h->decimal_point++; +} + +static void // +wuffs_base__private_implementation__high_prec_dec__round_nearest( + wuffs_base__private_implementation__high_prec_dec* h, + int32_t n) { + if ((n < 0) || (h->num_digits <= (uint32_t)n)) { + return; + } + bool up = h->digits[n] >= 5; + if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) { + up = h->truncated || // + ((n > 0) && ((h->digits[n - 1] & 1) != 0)); + } + + if (up) { + wuffs_base__private_implementation__high_prec_dec__round_up(h, n); + } else { + wuffs_base__private_implementation__high_prec_dec__round_down(h, n); + } +} + +static void // +wuffs_base__private_implementation__high_prec_dec__round_just_enough( + wuffs_base__private_implementation__high_prec_dec* h, + int32_t exp2, + uint64_t mantissa) { + // The magic numbers 52 and 53 in this function are because IEEE 754 double + // precision has 52 mantissa bits. + // + // Let f be the floating point number represented by exp2 and mantissa (and + // also the number in h): the number (mantissa * (2 ** (exp2 - 52))). + // + // If f is zero or a small integer, we can return early. + if ((mantissa == 0) || + ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) { + return; + } + + // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52). + // Subnormal numbers have the same exp2 but a smaller mantissa. + static const int32_t min_incl_normal_exp2 = -1022; + static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul; + + // Compute lower and upper bounds such that any number between them (possibly + // inclusive) will round to f. First, the lower bound. Our number f is: + // ((mantissa + 0) * (2 ** ( exp2 - 52))) + // + // The next lowest floating point number is: + // ((mantissa - 1) * (2 ** ( exp2 - 52))) + // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the + // min_incl_normal_exp2. Either way, call it: + // ((l_mantissa) * (2 ** (l_exp2 - 52))) + // + // The lower bound is halfway between them (noting that 52 became 53): + // (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53))) + int32_t l_exp2 = exp2; + uint64_t l_mantissa = mantissa - 1; + if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) { + l_exp2 = exp2 - 1; + l_mantissa = (2 * mantissa) - 1; + } + wuffs_base__private_implementation__high_prec_dec lower; + wuffs_base__private_implementation__high_prec_dec__assign( + &lower, (2 * l_mantissa) + 1, false); + wuffs_base__private_implementation__high_prec_dec__lshift(&lower, + l_exp2 - 53); + + // Next, the upper bound. Our number f is: + // ((mantissa + 0) * (2 ** (exp2 - 52))) + // + // The next highest floating point number is: + // ((mantissa + 1) * (2 ** (exp2 - 52))) + // + // The upper bound is halfway between them (noting that 52 became 53): + // (((2 * mantissa) + 1) * (2 ** (exp2 - 53))) + wuffs_base__private_implementation__high_prec_dec upper; + wuffs_base__private_implementation__high_prec_dec__assign( + &upper, (2 * mantissa) + 1, false); + wuffs_base__private_implementation__high_prec_dec__lshift(&upper, exp2 - 53); + + // The lower and upper bounds are possible outputs only if the original + // mantissa is even, so that IEEE round-to-even would round to the original + // mantissa and not its neighbors. + bool inclusive = (mantissa & 1) == 0; + + // As we walk the digits, we want to know whether rounding up would fall + // within the upper bound. This is tracked by upper_delta: + // - When -1, the digits of h and upper are the same so far. + // - When +0, we saw a difference of 1 between h and upper on a previous + // digit and subsequently only 9s for h and 0s for upper. Thus, rounding + // up may fall outside of the bound if !inclusive. + // - When +1, the difference is greater than 1 and we know that rounding up + // falls within the bound. + // + // This is a state machine with three states. The numerical value for each + // state (-1, +0 or +1) isn't important, other than their order. + int upper_delta = -1; + + // We can now figure out the shortest number of digits required. Walk the + // digits until h has distinguished itself from lower or upper. + // + // The zi and zd variables are indexes and digits, for z in l (lower), h (the + // number) and u (upper). + // + // The lower, h and upper numbers may have their decimal points at different + // places. In this case, upper is the longest, so we iterate ui starting from + // 0 and iterate li and hi starting from either 0 or -1. + int32_t ui = 0; + for (;; ui++) { + // Calculate hd, the middle number's digit. + int32_t hi = ui - upper.decimal_point + h->decimal_point; + if (hi >= ((int32_t)(h->num_digits))) { + break; + } + uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0; + + // Calculate ld, the lower bound's digit. + int32_t li = ui - upper.decimal_point + lower.decimal_point; + uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0; + + // We can round down (truncate) if lower has a different digit than h or if + // lower is inclusive and is exactly the result of rounding down (i.e. we + // have reached the final digit of lower). + bool can_round_down = + (ld != hd) || // + (inclusive && ((li + 1) == ((int32_t)(lower.num_digits)))); + + // Calculate ud, the upper bound's digit, and update upper_delta. + uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0; + if (upper_delta < 0) { + if ((hd + 1) < ud) { + // For example: + // h = 12345??? + // upper = 12347??? + upper_delta = +1; + } else if (hd != ud) { + // For example: + // h = 12345??? + // upper = 12346??? + upper_delta = +0; + } + } else if (upper_delta == 0) { + if ((hd != 9) || (ud != 0)) { + // For example: + // h = 1234598? + // upper = 1234600? + upper_delta = +1; + } + } + + // We can round up if upper has a different digit than h and either upper + // is inclusive or upper is bigger than the result of rounding up. + bool can_round_up = + (upper_delta > 0) || // + ((upper_delta == 0) && // + (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits))))); + + // If we can round either way, round to nearest. If we can round only one + // way, do it. If we can't round, continue the loop. + if (can_round_down) { + if (can_round_up) { + wuffs_base__private_implementation__high_prec_dec__round_nearest( + h, hi + 1); + return; + } else { + wuffs_base__private_implementation__high_prec_dec__round_down(h, + hi + 1); + return; + } + } else { + if (can_round_up) { + wuffs_base__private_implementation__high_prec_dec__round_up(h, hi + 1); + return; + } + } + } +} + +// -------- + +// wuffs_base__private_implementation__parse_number_f64_eisel_lemire produces +// the IEEE 754 double-precision value for an exact mantissa and base-10 +// exponent. For example: +// - when parsing "12345.678e+02", man is 12345678 and exp10 is -1. +// - when parsing "-12", man is 12 and exp10 is 0. Processing the leading +// minus sign is the responsibility of the caller, not this function. +// +// On success, it returns a non-negative int64_t such that the low 63 bits hold +// the 11-bit exponent and 52-bit mantissa. +// +// On failure, it returns a negative value. +// +// The algorithm is based on an original idea by Michael Eisel that was refined +// by Daniel Lemire. See +// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/ +// and +// https://nigeltao.github.io/blog/2020/eisel-lemire.html +// +// Preconditions: +// - man is non-zero. +// - exp10 is in the range [-307 ..= 288], the same range of the +// wuffs_base__private_implementation__powers_of_10 array. +// +// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX], +// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the +// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal +// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are +// approximately 2.23e–308 and 1.80e+308. +static int64_t // +wuffs_base__private_implementation__parse_number_f64_eisel_lemire( + uint64_t man, + int32_t exp10) { + // Look up the (possibly truncated) base-2 representation of (10 ** exp10). + // The look-up table was constructed so that it is already normalized: the + // table entry's mantissa's MSB (most significant bit) is on. + const uint64_t* po10 = + &wuffs_base__private_implementation__powers_of_10[exp10 + 307][0]; + + // Normalize the man argument. The (man != 0) precondition means that a + // non-zero bit exists. + uint32_t clz = wuffs_base__count_leading_zeroes_u64(man); + man <<= clz; + + // Calculate the return value's base-2 exponent. We might tweak it by ±1 + // later, but its initial value comes from a linear scaling of exp10, + // converting from power-of-10 to power-of-2, and adjusting by clz. + // + // The magic constants are: + // - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because + // the look-up table uses 64-bit mantissas. + // - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough + // (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928. + // - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift. + // + // Equality of the linearly-scaled value and the actual power-of-2, over the + // range of exp10 arguments that this function accepts, is confirmed by + // script/print-mpb-powers-of-10.go + uint64_t ret_exp2 = + ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz); + + // Multiply the two mantissas. Normalization means that both mantissas are at + // least (1<<63), so the 128-bit product must be at least (1<<126). The high + // 64 bits of the product, x_hi, must therefore be at least (1<<62). + // + // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi + // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore + // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. + wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]); + uint64_t x_hi = x.hi; + uint64_t x_lo = x.lo; + + // Before we shift right by at least 9 bits, recall that the look-up table + // entry was possibly truncated. We have so far only calculated a lower bound + // for the product (man * e), where e is (10 ** exp10). The upper bound would + // add a further (man * 1) to the 128-bit product, which overflows the lower + // 64-bit limb if ((x_lo + man) < man). + // + // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right + // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit + // limb's low 9 bits are all on. + // + // For example, parsing "9999999999999999999" will take the if-true branch + // here, since: + // - x_hi = 0x4563918244F3FFFF + // - x_lo = 0x8000000000000000 + // - man = 0x8AC7230489E7FFFF + if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) { + // Refine our calculation of (man * e). Before, our approximation of e used + // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit + // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e). + // Now calculate y = (man * bits_64_to_127_incl_of_e). + wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]); + uint64_t y_hi = y.hi; + uint64_t y_lo = y.lo; + + // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to + // calculate the 192-bit product of the 64-bit man by the 128-bit e. + // As we exit this if-block, we only care about the high 128 bits + // (merged_hi and merged_lo) of that 192-bit product. + // + // For example, parsing "1.234e-45" will take the if-true branch here, + // since: + // - x_hi = 0x70B7E3696DB29FFF + // - x_lo = 0xE040000000000000 + // - y_hi = 0x33718BBEAB0E0D7A + // - y_lo = 0xA880000000000000 + uint64_t merged_hi = x_hi; + uint64_t merged_lo = x_lo + y_hi; + if (merged_lo < x_lo) { + merged_hi++; // Carry the overflow bit. + } + + // The "high resolution" approximation of e is still a lower bound. Once + // again, see if the upper bound is large enough to produce a different + // result. This time, if it does, give up instead of reaching for an even + // more precise approximation to e. + // + // This three-part check is similar to the two-part check that guarded the + // if block that we're now in, but it has an extra term for the middle 64 + // bits (checking that adding 1 to merged_lo would overflow). + // + // For example, parsing "5.9604644775390625e-8" will take the if-true + // branch here, since: + // - merged_hi = 0x7FFFFFFFFFFFFFFF + // - merged_lo = 0xFFFFFFFFFFFFFFFF + // - y_lo = 0x4DB3FFC120988200 + // - man = 0xD3C21BCECCEDA100 + if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) && + (y_lo + man < man)) { + return -1; + } + + // Replace the 128-bit x with merged. + x_hi = merged_hi; + x_lo = merged_lo; + } + + // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave + // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the + // MSB (before shifting) was on, adjust ret_exp2 for the larger shift. + // + // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit + // number. + uint64_t msb = x_hi >> 63; + uint64_t ret_mantissa = x_hi >> (msb + 9); + ret_exp2 -= 1 ^ msb; + + // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can + // be tricky. If we're half-way between two exactly representable numbers + // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give + // up instead of trying to pick the winner. + // + // Technically, we could tighten the condition by changing "73" to "73 or 74, + // depending on msb", but a flat "73" is simpler. + // + // For example, parsing "1e+23" will take the if-true branch here, since: + // - x_hi = 0x54B40B1F852BDA00 + // - ret_mantissa = 0x002A5A058FC295ED + if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) { + return -1; + } + + // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit + // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether + // it was on or off, shifting right by one then produces a 53-bit number. If + // carrying up overflowed, shift again. + ret_mantissa += ret_mantissa & 1; + ret_mantissa >>= 1; + // This if block is equivalent to (but benchmarks slightly faster than) the + // following branchless form: + // uint64_t overflow_adjustment = ret_mantissa >> 53; + // ret_mantissa >>= overflow_adjustment; + // ret_exp2 += overflow_adjustment; + // + // For example, parsing "7.2057594037927933e+16" will take the if-true + // branch here, since: + // - x_hi = 0x7FFFFFFFFFFFFE80 + // - ret_mantissa = 0x0020000000000000 + if ((ret_mantissa >> 53) > 0) { + ret_mantissa >>= 1; + ret_exp2++; + } + + // Starting with a 53-bit number, IEEE 754 double-precision normal numbers + // have an implicit mantissa bit. Mask that away and keep the low 52 bits. + ret_mantissa &= 0x000FFFFFFFFFFFFF; + + // Pack the bits and return. + return ((int64_t)(ret_mantissa | (ret_exp2 << 52))); +} + +// -------- + +static wuffs_base__result_f64 // +wuffs_base__private_implementation__parse_number_f64_special( + wuffs_base__slice_u8 s, + uint32_t options) { + do { + if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) { + goto fail; + } + + uint8_t* p = s.ptr; + uint8_t* q = s.ptr + s.len; + + for (; (p < q) && (*p == '_'); p++) { + } + if (p >= q) { + goto fail; + } + + // Parse sign. + bool negative = false; + do { + if (*p == '+') { + p++; + } else if (*p == '-') { + negative = true; + p++; + } else { + break; + } + for (; (p < q) && (*p == '_'); p++) { + } + } while (0); + if (p >= q) { + goto fail; + } + + bool nan = false; + switch (p[0]) { + case 'I': + case 'i': + if (((q - p) < 3) || // + ((p[1] != 'N') && (p[1] != 'n')) || // + ((p[2] != 'F') && (p[2] != 'f'))) { + goto fail; + } + p += 3; + + if ((p >= q) || (*p == '_')) { + break; + } else if (((q - p) < 5) || // + ((p[0] != 'I') && (p[0] != 'i')) || // + ((p[1] != 'N') && (p[1] != 'n')) || // + ((p[2] != 'I') && (p[2] != 'i')) || // + ((p[3] != 'T') && (p[3] != 't')) || // + ((p[4] != 'Y') && (p[4] != 'y'))) { + goto fail; + } + p += 5; + + if ((p >= q) || (*p == '_')) { + break; + } + goto fail; + + case 'N': + case 'n': + if (((q - p) < 3) || // + ((p[1] != 'A') && (p[1] != 'a')) || // + ((p[2] != 'N') && (p[2] != 'n'))) { + goto fail; + } + p += 3; + + if ((p >= q) || (*p == '_')) { + nan = true; + break; + } + goto fail; + + default: + goto fail; + } + + // Finish. + for (; (p < q) && (*p == '_'); p++) { + } + if (p != q) { + goto fail; + } + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) | + (negative ? 0x8000000000000000 : 0)); + return ret; + } while (0); + +fail: + do { + wuffs_base__result_f64 ret; + ret.status.repr = wuffs_base__error__bad_argument; + ret.value = 0; + return ret; + } while (0); +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // +wuffs_base__private_implementation__high_prec_dec__to_f64( + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t options) { + do { + // powers converts decimal powers of 10 to binary powers of 2. For example, + // (10000 >> 13) is 1. It stops before the elements exceed 60, also known + // as WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. + // + // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array + // element value rounds up (1<<14 is an upper bound for 1e4) while staying + // at or below WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. + // + // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2), + // powers[2] == 6 and so: + // - Right shifting by 6+0 produces the range [10/64 .. 100/64] = + // [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1. + // - Right shifting by 6+1 produces the range [10/128 .. 100/128] = + // [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0. + // + // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2), + // powers[2] == 6 and so: + // - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] = + // [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0. + // - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] = + // [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1. + // + // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0) + // when right shifting but (powers[n]+1) when left shifting. + static const uint32_t num_powers = 19; + static const uint8_t powers[19] = { + 0, 3, 6, 9, 13, 16, 19, 23, 26, 29, // + 33, 36, 39, 43, 46, 49, 53, 56, 59, // + }; + + // Handle zero and obvious extremes. The largest and smallest positive + // finite f64 values are approximately 1.8e+308 and 4.9e-324. + if ((h->num_digits == 0) || (h->decimal_point < -326)) { + goto zero; + } else if (h->decimal_point > 310) { + goto infinity; + } + + // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10) + // pair from the high_prec_dec h is more correct but slower than the + // approach taken in wuffs_base__parse_number_f64. The latter is optimized + // for the common cases (e.g. assuming no underscores or a leading '+' + // sign) rather than the full set of cases allowed by the Wuffs API. + // + // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying + // for an exact result). When we have more than 19 mantissa digits, run it + // twice to get a lower and upper bound. We still have an exact result + // (within f64's rounding margin) if both bounds are equal (and valid). + uint32_t i_max = h->num_digits; + if (i_max > 19) { + i_max = 19; + } + int32_t exp10 = h->decimal_point - ((int32_t)i_max); + if ((-307 <= exp10) && (exp10 <= 288)) { + uint64_t man = 0; + uint32_t i; + for (i = 0; i < i_max; i++) { + man = (10 * man) + h->digits[i]; + } + while (man != 0) { // The 'while' is just an 'if' that we can 'break'. + int64_t r0 = + wuffs_base__private_implementation__parse_number_f64_eisel_lemire( + man + 0, exp10); + if (r0 < 0) { + break; + } else if (h->num_digits > 19) { + int64_t r1 = + wuffs_base__private_implementation__parse_number_f64_eisel_lemire( + man + 1, exp10); + if (r1 != r0) { + break; + } + } + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63)); + return ret; + } + } + + // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See + // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html + // + // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently, + // that h->decimal_point is +0 or +1. + // + // First we shift right while at or above 10... + const int32_t f64_bias = -1023; + int32_t exp2 = 0; + while (h->decimal_point > 1) { + uint32_t n = (uint32_t)(+h->decimal_point); + uint32_t shift = + (n < num_powers) + ? powers[n] + : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; + + wuffs_base__private_implementation__high_prec_dec__small_rshift(h, shift); + if (h->decimal_point < + -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { + goto zero; + } + exp2 += (int32_t)shift; + } + // ...then we shift left while below 0.1. + while (h->decimal_point < 0) { + uint32_t shift; + uint32_t n = (uint32_t)(-h->decimal_point); + shift = (n < num_powers) + // The +1 is per "when targeting h->decimal_point being +0 or + // +1... when left shifting" in the powers comment above. + ? (powers[n] + 1) + : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; + + wuffs_base__private_implementation__high_prec_dec__small_lshift(h, shift); + if (h->decimal_point > + +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { + goto infinity; + } + exp2 -= (int32_t)shift; + } + + // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which + // will give us our exponent in base-2), the mantissa's first 3 digits will + // determine the final left shift, equal to 52 (the number of explicit f64 + // bits) plus an additional adjustment. + int man3 = (100 * h->digits[0]) + + ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) + + ((h->num_digits > 2) ? h->digits[2] : 0); + int32_t additional_lshift = 0; + if (h->decimal_point == 0) { // The value is in [0.1 .. 1]. + if (man3 < 125) { + additional_lshift = +4; + } else if (man3 < 250) { + additional_lshift = +3; + } else if (man3 < 500) { + additional_lshift = +2; + } else { + additional_lshift = +1; + } + } else { // The value is in [1 .. 10]. + if (man3 < 200) { + additional_lshift = -0; + } else if (man3 < 400) { + additional_lshift = -1; + } else if (man3 < 800) { + additional_lshift = -2; + } else { + additional_lshift = -3; + } + } + exp2 -= additional_lshift; + uint32_t final_lshift = (uint32_t)(52 + additional_lshift); + + // The minimum normal exponent is (f64_bias + 1). + while ((f64_bias + 1) > exp2) { + uint32_t n = (uint32_t)((f64_bias + 1) - exp2); + if (n > WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { + n = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; + } + wuffs_base__private_implementation__high_prec_dec__small_rshift(h, n); + exp2 += (int32_t)n; + } + + // Check for overflow. + if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1. + goto infinity; + } + + // Extract 53 bits for the mantissa (in base-2). + wuffs_base__private_implementation__high_prec_dec__small_lshift( + h, final_lshift); + uint64_t man2 = + wuffs_base__private_implementation__high_prec_dec__rounded_integer(h); + + // Rounding might have added one bit. If so, shift and re-check overflow. + if ((man2 >> 53) != 0) { + man2 >>= 1; + exp2++; + if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1. + goto infinity; + } + } + + // Handle subnormal numbers. + if ((man2 >> 52) == 0) { + exp2 = f64_bias; + } + + // Pack the bits and return. + uint64_t exp2_bits = + (uint64_t)((exp2 - f64_bias) & 0x07FF); // (1 << 11) - 1. + uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) | // (1 << 52) - 1. + (exp2_bits << 52) | // + (h->negative ? 0x8000000000000000 : 0); // (1 << 63). + + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); + return ret; + } while (0); + +zero: + do { + uint64_t bits = h->negative ? 0x8000000000000000 : 0; + + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); + return ret; + } while (0); + +infinity: + do { + if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) { + wuffs_base__result_f64 ret; + ret.status.repr = wuffs_base__error__bad_argument; + ret.value = 0; + return ret; + } + + uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000; + + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); + return ret; + } while (0); +} + +static inline bool // +wuffs_base__private_implementation__is_decimal_digit(uint8_t c) { + return ('0' <= c) && (c <= '9'); +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // +wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) { + // In practice, almost all "dd.ddddE±xxx" numbers can be represented + // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10 + // exponent, adjusting "xxx" for the position (if present) of the decimal + // separator '.' or ','. + // + // This (u64 man, i32 exp10) data structure is superficially similar to the + // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent + // here is base-10, not base-2. + // + // If s's number fits in a (man, exp10), parse that pair with the + // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with + // the fallback algorithm is slower but comprehensive. + // + // †"Printing Floating-Point Numbers Quickly and Accurately with Integers" + // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf). + // Florian Loitsch is also the primary contributor to + // https://github.com/google/double-conversion + do { + // Calculating that (man, exp10) pair needs to stay within s's bounds. + // Provided that s isn't extremely long, work on a NUL-terminated copy of + // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx". + // + // As the pointer p walks the contents, it's faster to repeatedly check "is + // *p a valid digit" than "is p within bounds and *p a valid digit". + if (s.len >= 256) { + goto fallback; + } + uint8_t z[256]; + memcpy(&z[0], s.ptr, s.len); + z[s.len] = 0; + const uint8_t* p = &z[0]; + + // Look for a leading minus sign. Technically, we could also look for an + // optional plus sign, but the "script/process-json-numbers.c with -p" + // benchmark is noticably slower if we do. It's optional and, in practice, + // usually absent. Let the fallback catch it. + bool negative = (*p == '-'); + if (negative) { + p++; + } + + // After walking "dd.dddd", comparing p later with p now will produce the + // number of "d"s and "."s. + const uint8_t* const start_of_digits_ptr = p; + + // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0', + // it must be a single '0'. If it starts with a non-zero decimal digit, it + // can be a sequence of decimal digits. + // + // Update the man variable during the walk. It's OK if man overflows now. + // We'll detect that later. + uint64_t man; + if (*p == '0') { + man = 0; + p++; + if (wuffs_base__private_implementation__is_decimal_digit(*p)) { + goto fallback; + } + } else if (wuffs_base__private_implementation__is_decimal_digit(*p)) { + man = ((uint8_t)(*p - '0')); + p++; + for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) { + man = (10 * man) + ((uint8_t)(*p - '0')); + } + } else { + goto fallback; + } + + // Walk the "d"s after the optional decimal separator ('.' or ','), + // updating the man and exp10 variables. + int32_t exp10 = 0; + if (*p == + ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.')) { + p++; + const uint8_t* first_after_separator_ptr = p; + if (!wuffs_base__private_implementation__is_decimal_digit(*p)) { + goto fallback; + } + man = (10 * man) + ((uint8_t)(*p - '0')); + p++; + for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) { + man = (10 * man) + ((uint8_t)(*p - '0')); + } + exp10 = ((int32_t)(first_after_separator_ptr - p)); + } + + // Count the number of digits: + // - for an input of "314159", digit_count is 6. + // - for an input of "3.14159", digit_count is 7. + // + // This is off-by-one if there is a decimal separator. That's OK for now. + // We'll correct for that later. The "script/process-json-numbers.c with + // -p" benchmark is noticably slower if we try to correct for that now. + uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr); + + // Update exp10 for the optional exponent, starting with 'E' or 'e'. + if ((*p | 0x20) == 'e') { + p++; + int32_t exp_sign = +1; + if (*p == '-') { + p++; + exp_sign = -1; + } else if (*p == '+') { + p++; + } + if (!wuffs_base__private_implementation__is_decimal_digit(*p)) { + goto fallback; + } + int32_t exp_num = ((uint8_t)(*p - '0')); + p++; + // The rest of the exp_num walking has a peculiar control flow but, once + // again, the "script/process-json-numbers.c with -p" benchmark is + // sensitive to alternative formulations. + if (wuffs_base__private_implementation__is_decimal_digit(*p)) { + exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); + p++; + } + if (wuffs_base__private_implementation__is_decimal_digit(*p)) { + exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); + p++; + } + while (wuffs_base__private_implementation__is_decimal_digit(*p)) { + if (exp_num > 0x1000000) { + goto fallback; + } + exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); + p++; + } + exp10 += exp_sign * exp_num; + } + + // The Wuffs API is that the original slice has no trailing data. It also + // allows underscores, which we don't catch here but the fallback should. + if (p != &z[s.len]) { + goto fallback; + } + + // Check that the uint64_t typed man variable has not overflowed, based on + // digit_count. + // + // For reference: + // - (1 << 63) is 9223372036854775808, which has 19 decimal digits. + // - (1 << 64) is 18446744073709551616, which has 20 decimal digits. + // - 19 nines, 9999999999999999999, is 0x8AC7230489E7FFFF, which has 64 + // bits and 16 hexadecimal digits. + // - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67 + // bits and 17 hexadecimal digits. + if (digit_count > 19) { + // Even if we have more than 19 pseudo-digits, it's not yet definitely an + // overflow. Recall that digit_count might be off-by-one (too large) if + // there's a decimal separator. It will also over-report the number of + // meaningful digits if the input looks something like "0.000dddExxx". + // + // We adjust by the number of leading '0's and '.'s and re-compare to 19. + // Once again, technically, we could skip ','s too, but that perturbs the + // "script/process-json-numbers.c with -p" benchmark. + const uint8_t* q = start_of_digits_ptr; + for (; (*q == '0') || (*q == '.'); q++) { + } + digit_count -= (uint32_t)(q - start_of_digits_ptr); + if (digit_count > 19) { + goto fallback; + } + } + + // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire + // preconditions include that exp10 is in the range [-307 ..= 288]. + if ((exp10 < -307) || (288 < exp10)) { + goto fallback; + } + + // If both man and (10 ** exp10) are exactly representable by a double, we + // don't need to run the Eisel-Lemire algorithm. + if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) { + double d = (double)man; + if (exp10 >= 0) { + d *= wuffs_base__private_implementation__f64_powers_of_10[+exp10]; + } else { + d /= wuffs_base__private_implementation__f64_powers_of_10[-exp10]; + } + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = negative ? -d : +d; + return ret; + } + + // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire + // preconditions include that man is non-zero. Parsing "0" should be caught + // by the "If both man and (10 ** exp10)" above, but "0e99" might not. + if (man == 0) { + goto fallback; + } + + // Our man and exp10 are in range. Run the Eisel-Lemire algorithm. + int64_t r = + wuffs_base__private_implementation__parse_number_f64_eisel_lemire( + man, exp10); + if (r < 0) { + goto fallback; + } + wuffs_base__result_f64 ret; + ret.status.repr = NULL; + ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + ((uint64_t)r) | (((uint64_t)negative) << 63)); + return ret; + } while (0); + +fallback: + do { + wuffs_base__private_implementation__high_prec_dec h; + wuffs_base__status status = + wuffs_base__private_implementation__high_prec_dec__parse(&h, s, + options); + if (status.repr) { + return wuffs_base__private_implementation__parse_number_f64_special( + s, options); + } + return wuffs_base__private_implementation__high_prec_dec__to_f64(&h, + options); + } while (0); +} + +// -------- + +static inline size_t // +wuffs_base__private_implementation__render_inf(wuffs_base__slice_u8 dst, + bool neg, + uint32_t options) { + if (neg) { + if (dst.len < 4) { + return 0; + } + wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D); // '-Inf'le. + return 4; + } + + if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { + if (dst.len < 4) { + return 0; + } + wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B); // '+Inf'le. + return 4; + } + + if (dst.len < 3) { + return 0; + } + wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49); // 'Inf'le. + return 3; +} + +static inline size_t // +wuffs_base__private_implementation__render_nan(wuffs_base__slice_u8 dst) { + if (dst.len < 3) { + return 0; + } + wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E); // 'NaN'le. + return 3; +} + +static size_t // +wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( + wuffs_base__slice_u8 dst, + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t precision, + uint32_t options) { + size_t n = (h->negative || + (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN)) + ? 1 + : 0; + if (h->decimal_point <= 0) { + n += 1; + } else { + n += (size_t)(h->decimal_point); + } + if (precision > 0) { + n += precision + 1; // +1 for the '.'. + } + + // Don't modify dst if the formatted number won't fit. + if (n > dst.len) { + return 0; + } + + // Align-left or align-right. + uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) + ? &dst.ptr[dst.len - n] + : &dst.ptr[0]; + + // Leading "±". + if (h->negative) { + *ptr++ = '-'; + } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { + *ptr++ = '+'; + } + + // Integral digits. + if (h->decimal_point <= 0) { + *ptr++ = '0'; + } else { + uint32_t m = + wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point)); + uint32_t i = 0; + for (; i < m; i++) { + *ptr++ = (uint8_t)('0' | h->digits[i]); + } + for (; i < (uint32_t)(h->decimal_point); i++) { + *ptr++ = '0'; + } + } + + // Separator and then fractional digits. + if (precision > 0) { + *ptr++ = + (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.'; + uint32_t i = 0; + for (; i < precision; i++) { + uint32_t j = ((uint32_t)(h->decimal_point)) + i; + *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0)); + } + } + + return n; +} + +static size_t // +wuffs_base__private_implementation__high_prec_dec__render_exponent_present( + wuffs_base__slice_u8 dst, + wuffs_base__private_implementation__high_prec_dec* h, + uint32_t precision, + uint32_t options) { + int32_t exp = 0; + if (h->num_digits > 0) { + exp = h->decimal_point - 1; + } + bool negative_exp = exp < 0; + if (negative_exp) { + exp = -exp; + } + + size_t n = (h->negative || + (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN)) + ? 4 + : 3; // Mininum 3 bytes: first digit and then "e±". + if (precision > 0) { + n += precision + 1; // +1 for the '.'. + } + n += (exp < 100) ? 2 : 3; + + // Don't modify dst if the formatted number won't fit. + if (n > dst.len) { + return 0; + } + + // Align-left or align-right. + uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) + ? &dst.ptr[dst.len - n] + : &dst.ptr[0]; + + // Leading "±". + if (h->negative) { + *ptr++ = '-'; + } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { + *ptr++ = '+'; + } + + // Integral digit. + if (h->num_digits > 0) { + *ptr++ = (uint8_t)('0' | h->digits[0]); + } else { + *ptr++ = '0'; + } + + // Separator and then fractional digits. + if (precision > 0) { + *ptr++ = + (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) + ? ',' + : '.'; + uint32_t i = 1; + uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1); + for (; i < j; i++) { + *ptr++ = (uint8_t)('0' | h->digits[i]); + } + for (; i <= precision; i++) { + *ptr++ = '0'; + } + } + + // Exponent: "e±" and then 2 or 3 digits. + *ptr++ = 'e'; + *ptr++ = negative_exp ? '-' : '+'; + if (exp < 10) { + *ptr++ = '0'; + *ptr++ = (uint8_t)('0' | exp); + } else if (exp < 100) { + *ptr++ = (uint8_t)('0' | (exp / 10)); + *ptr++ = (uint8_t)('0' | (exp % 10)); + } else { + int32_t e = exp / 100; + exp -= e * 100; + *ptr++ = (uint8_t)('0' | e); + *ptr++ = (uint8_t)('0' | (exp / 10)); + *ptr++ = (uint8_t)('0' | (exp % 10)); + } + + return n; +} + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_f64(wuffs_base__slice_u8 dst, + double x, + uint32_t precision, + uint32_t options) { + // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits + // with a -1023 bias) and mantissa (52 bits). + uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x); + bool neg = (bits >> 63) != 0; + int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF; + uint64_t man = bits & 0x000FFFFFFFFFFFFFul; + + // Apply the exponent bias and set the implicit top bit of the mantissa, + // unless x is subnormal. Also take care of Inf and NaN. + if (exp2 == 0x7FF) { + if (man != 0) { + return wuffs_base__private_implementation__render_nan(dst); + } + return wuffs_base__private_implementation__render_inf(dst, neg, options); + } else if (exp2 == 0) { + exp2 = -1022; + } else { + exp2 -= 1023; + man |= 0x0010000000000000ul; + } + + // Ensure that precision isn't too large. + if (precision > 4095) { + precision = 4095; + } + + // Convert from the (neg, exp2, man) tuple to an HPD. + wuffs_base__private_implementation__high_prec_dec h; + wuffs_base__private_implementation__high_prec_dec__assign(&h, man, neg); + if (h.num_digits > 0) { + wuffs_base__private_implementation__high_prec_dec__lshift( + &h, exp2 - 52); // 52 mantissa bits. + } + + // Handle the "%e" and "%f" formats. + switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT | + WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) { + case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT: // The "%"f" format. + if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { + wuffs_base__private_implementation__high_prec_dec__round_just_enough( + &h, exp2, man); + int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point; + precision = ((uint32_t)(wuffs_base__i32__max(0, p))); + } else { + wuffs_base__private_implementation__high_prec_dec__round_nearest( + &h, ((int32_t)precision) + h.decimal_point); + } + return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( + dst, &h, precision, options); + + case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT: // The "%e" format. + if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { + wuffs_base__private_implementation__high_prec_dec__round_just_enough( + &h, exp2, man); + precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0; + } else { + wuffs_base__private_implementation__high_prec_dec__round_nearest( + &h, ((int32_t)precision) + 1); + } + return wuffs_base__private_implementation__high_prec_dec__render_exponent_present( + dst, &h, precision, options); + } + + // We have the "%g" format and so precision means the number of significant + // digits, not the number of digits after the decimal separator. Perform + // rounding and determine whether to use "%e" or "%f". + int32_t e_threshold = 0; + if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { + wuffs_base__private_implementation__high_prec_dec__round_just_enough( + &h, exp2, man); + precision = h.num_digits; + e_threshold = 6; + } else { + if (precision == 0) { + precision = 1; + } + wuffs_base__private_implementation__high_prec_dec__round_nearest( + &h, ((int32_t)precision)); + e_threshold = ((int32_t)precision); + int32_t nd = ((int32_t)(h.num_digits)); + if ((e_threshold > nd) && (nd >= h.decimal_point)) { + e_threshold = nd; + } + } + + // Use the "%e" format if the exponent is large. + int32_t e = h.decimal_point - 1; + if ((e < -4) || (e_threshold <= e)) { + uint32_t p = wuffs_base__u32__min(precision, h.num_digits); + return wuffs_base__private_implementation__high_prec_dec__render_exponent_present( + dst, &h, (p > 0) ? (p - 1) : 0, options); + } + + // Use the "%f" format otherwise. + int32_t p = ((int32_t)precision); + if (p > h.decimal_point) { + p = ((int32_t)(h.num_digits)); + } + precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point))); + return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( + dst, &h, precision, options); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__INTCONV) + +// ---------------- Integer + +// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits, +// and (0x80 | v) for valid digits, where v is the 4 bit value. + +static const uint8_t wuffs_base__parse_number__decimal_digits[256] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. + 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F +}; + +static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. + 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. + + 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x40 ..= 0x47. 'A'-'F'. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. + 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x60 ..= 0x67. 'a'-'f'. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F +}; + +static const uint8_t wuffs_base__private_implementation__encode_base16[16] = { + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // 0x00 ..= 0x07. + 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, // 0x08 ..= 0x0F. +}; + +// -------- + +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 // +wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) { + uint8_t* p = s.ptr; + uint8_t* q = s.ptr + s.len; + + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (; (p < q) && (*p == '_'); p++) { + } + } + + bool negative = false; + if (p >= q) { + goto fail_bad_argument; + } else if (*p == '-') { + p++; + negative = true; + } else if (*p == '+') { + p++; + } + + do { + wuffs_base__result_u64 r = wuffs_base__parse_number_u64( + wuffs_base__make_slice_u8(p, (size_t)(q - p)), options); + if (r.status.repr != NULL) { + wuffs_base__result_i64 ret; + ret.status.repr = r.status.repr; + ret.value = 0; + return ret; + } else if (negative) { + if (r.value < 0x8000000000000000) { + wuffs_base__result_i64 ret; + ret.status.repr = NULL; + ret.value = -(int64_t)(r.value); + return ret; + } else if (r.value == 0x8000000000000000) { + wuffs_base__result_i64 ret; + ret.status.repr = NULL; + ret.value = INT64_MIN; + return ret; + } + goto fail_out_of_bounds; + } else if (r.value > 0x7FFFFFFFFFFFFFFF) { + goto fail_out_of_bounds; + } else { + wuffs_base__result_i64 ret; + ret.status.repr = NULL; + ret.value = +(int64_t)(r.value); + return ret; + } + } while (0); + +fail_bad_argument: + do { + wuffs_base__result_i64 ret; + ret.status.repr = wuffs_base__error__bad_argument; + ret.value = 0; + return ret; + } while (0); + +fail_out_of_bounds: + do { + wuffs_base__result_i64 ret; + ret.status.repr = wuffs_base__error__out_of_bounds; + ret.value = 0; + return ret; + } while (0); +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 // +wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) { + uint8_t* p = s.ptr; + uint8_t* q = s.ptr + s.len; + + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (; (p < q) && (*p == '_'); p++) { + } + } + + if (p >= q) { + goto fail_bad_argument; + + } else if (*p == '0') { + p++; + if (p >= q) { + goto ok_zero; + } + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + if (*p == '_') { + p++; + for (; p < q; p++) { + if (*p != '_') { + if (options & + WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) { + goto decimal; + } + goto fail_bad_argument; + } + } + goto ok_zero; + } + } + + if ((*p == 'x') || (*p == 'X')) { + p++; + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (; (p < q) && (*p == '_'); p++) { + } + } + if (p < q) { + goto hexadecimal; + } + + } else if ((*p == 'd') || (*p == 'D')) { + p++; + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { + for (; (p < q) && (*p == '_'); p++) { + } + } + if (p < q) { + goto decimal; + } + } + + if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) { + goto decimal; + } + goto fail_bad_argument; + } + +decimal: + do { + uint64_t v = wuffs_base__parse_number__decimal_digits[*p++]; + if (v == 0) { + goto fail_bad_argument; + } + v &= 0x0F; + + // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1). + const uint64_t max10 = 1844674407370955161u; + const uint8_t max1 = 5; + + for (; p < q; p++) { + if ((*p == '_') && + (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + continue; + } + uint8_t digit = wuffs_base__parse_number__decimal_digits[*p]; + if (digit == 0) { + goto fail_bad_argument; + } + digit &= 0x0F; + if ((v > max10) || ((v == max10) && (digit > max1))) { + goto fail_out_of_bounds; + } + v = (10 * v) + ((uint64_t)(digit)); + } + + wuffs_base__result_u64 ret; + ret.status.repr = NULL; + ret.value = v; + return ret; + } while (0); + +hexadecimal: + do { + uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++]; + if (v == 0) { + goto fail_bad_argument; + } + v &= 0x0F; + + for (; p < q; p++) { + if ((*p == '_') && + (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { + continue; + } + uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p]; + if (digit == 0) { + goto fail_bad_argument; + } + digit &= 0x0F; + if ((v >> 60) != 0) { + goto fail_out_of_bounds; + } + v = (v << 4) | ((uint64_t)(digit)); + } + + wuffs_base__result_u64 ret; + ret.status.repr = NULL; + ret.value = v; + return ret; + } while (0); + +ok_zero: + do { + wuffs_base__result_u64 ret; + ret.status.repr = NULL; + ret.value = 0; + return ret; + } while (0); + +fail_bad_argument: + do { + wuffs_base__result_u64 ret; + ret.status.repr = wuffs_base__error__bad_argument; + ret.value = 0; + return ret; + } while (0); + +fail_out_of_bounds: + do { + wuffs_base__result_u64 ret; + ret.status.repr = wuffs_base__error__out_of_bounds; + ret.value = 0; + return ret; + } while (0); +} + +// -------- + +// wuffs_base__render_number__first_hundred contains the decimal encodings of +// the first one hundred numbers [0 ..= 99]. +static const uint8_t wuffs_base__render_number__first_hundred[200] = { + '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', // + '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', // + '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', // + '1', '5', '1', '6', '1', '7', '1', '8', '1', '9', // + '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', // + '2', '5', '2', '6', '2', '7', '2', '8', '2', '9', // + '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', // + '3', '5', '3', '6', '3', '7', '3', '8', '3', '9', // + '4', '0', '4', '1', '4', '2', '4', '3', '4', '4', // + '4', '5', '4', '6', '4', '7', '4', '8', '4', '9', // + '5', '0', '5', '1', '5', '2', '5', '3', '5', '4', // + '5', '5', '5', '6', '5', '7', '5', '8', '5', '9', // + '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', // + '6', '5', '6', '6', '6', '7', '6', '8', '6', '9', // + '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', // + '7', '5', '7', '6', '7', '7', '7', '8', '7', '9', // + '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', // + '8', '5', '8', '6', '8', '7', '8', '8', '8', '9', // + '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', // + '9', '5', '9', '6', '9', '7', '9', '8', '9', '9', // +}; + +static size_t // +wuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst, + uint64_t x, + uint32_t options, + bool neg) { + uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL]; + uint8_t* ptr = &buf[0] + sizeof(buf); + + while (x >= 100) { + size_t index = ((size_t)((x % 100) * 2)); + x /= 100; + uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0]; + uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1]; + ptr -= 2; + ptr[0] = s0; + ptr[1] = s1; + } + + if (x < 10) { + ptr -= 1; + ptr[0] = (uint8_t)('0' + x); + } else { + size_t index = ((size_t)(x * 2)); + uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0]; + uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1]; + ptr -= 2; + ptr[0] = s0; + ptr[1] = s1; + } + + if (neg) { + ptr -= 1; + ptr[0] = '-'; + } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { + ptr -= 1; + ptr[0] = '+'; + } + + size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0])); + if (n > dst.len) { + return 0; + } + memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) + ? (dst.len - n) + : 0), + ptr, n); + return n; +} + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_i64(wuffs_base__slice_u8 dst, + int64_t x, + uint32_t options) { + uint64_t u = (uint64_t)x; + bool neg = x < 0; + if (neg) { + u = 1 + ~u; + } + return wuffs_base__private_implementation__render_number_u64(dst, u, options, + neg); +} + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__render_number_u64(wuffs_base__slice_u8 dst, + uint64_t x, + uint32_t options) { + return wuffs_base__private_implementation__render_number_u64(dst, x, options, + false); +} + +// ---------------- Base-16 + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + wuffs_base__transform__output o; + size_t src_len2 = src.len / 2; + size_t len; + if (dst.len < src_len2) { + len = dst.len; + o.status.repr = wuffs_base__suspension__short_write; + } else { + len = src_len2; + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + } else if (src.len & 1) { + o.status.repr = wuffs_base__error__bad_data; + } else { + o.status.repr = NULL; + } + } + + uint8_t* d = dst.ptr; + uint8_t* s = src.ptr; + size_t n = len; + + while (n--) { + *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) | + (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F)); + d += 1; + s += 2; + } + + o.num_dst = len; + o.num_src = len * 2; + return o; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + wuffs_base__transform__output o; + size_t src_len4 = src.len / 4; + size_t len = dst.len < src_len4 ? dst.len : src_len4; + if (dst.len < src_len4) { + len = dst.len; + o.status.repr = wuffs_base__suspension__short_write; + } else { + len = src_len4; + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + } else if (src.len & 1) { + o.status.repr = wuffs_base__error__bad_data; + } else { + o.status.repr = NULL; + } + } + + uint8_t* d = dst.ptr; + uint8_t* s = src.ptr; + size_t n = len; + + while (n--) { + *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) | + (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F)); + d += 1; + s += 4; + } + + o.num_dst = len; + o.num_src = len * 4; + return o; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + wuffs_base__transform__output o; + size_t dst_len2 = dst.len / 2; + size_t len; + if (dst_len2 < src.len) { + len = dst_len2; + o.status.repr = wuffs_base__suspension__short_write; + } else { + len = src.len; + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + } else { + o.status.repr = NULL; + } + } + + uint8_t* d = dst.ptr; + uint8_t* s = src.ptr; + size_t n = len; + + while (n--) { + uint8_t c = *s; + d[0] = wuffs_base__private_implementation__encode_base16[c >> 4]; + d[1] = wuffs_base__private_implementation__encode_base16[c & 0x0F]; + d += 2; + s += 1; + } + + o.num_dst = len * 2; + o.num_src = len; + return o; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + wuffs_base__transform__output o; + size_t dst_len4 = dst.len / 4; + size_t len; + if (dst_len4 < src.len) { + len = dst_len4; + o.status.repr = wuffs_base__suspension__short_write; + } else { + len = src.len; + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + } else { + o.status.repr = NULL; + } + } + + uint8_t* d = dst.ptr; + uint8_t* s = src.ptr; + size_t n = len; + + while (n--) { + uint8_t c = *s; + d[0] = '\\'; + d[1] = 'x'; + d[2] = wuffs_base__private_implementation__encode_base16[c >> 4]; + d[3] = wuffs_base__private_implementation__encode_base16[c & 0x0F]; + d += 4; + s += 1; + } + + o.num_dst = len * 4; + o.num_src = len; + return o; +} + +// ---------------- Base-64 + +// The two base-64 alphabets, std and url, differ only in the last two codes. +// - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" +// - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_" + +static const uint8_t wuffs_base__base_64__decode_std[256] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27. + 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F, // 0x28 ..= 0x2F. + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37. + 0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F. + + 0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47. + 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F. + 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57. + 0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x58 ..= 0x5F. + 0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67. + 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F. + 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77. + 0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F. + + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF. + + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F +}; + +static const uint8_t wuffs_base__base_64__decode_url[256] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, // 0x28 ..= 0x2F. + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37. + 0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F. + + 0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47. + 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F. + 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57. + 0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F, // 0x58 ..= 0x5F. + 0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67. + 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F. + 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77. + 0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F. + + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF. + + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F +}; + +static const uint8_t wuffs_base__base_64__encode_std[64] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07. + 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F. + 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17. + 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F. + 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27. + 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F. + 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37. + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F, // 0x38 ..= 0x3F. +}; + +static const uint8_t wuffs_base__base_64__encode_url[64] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07. + 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F. + 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17. + 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F. + 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27. + 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F. + 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37. + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F, // 0x38 ..= 0x3F. +}; + +// -------- + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_64__decode(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET) + ? wuffs_base__base_64__decode_url + : wuffs_base__base_64__decode_std; + wuffs_base__transform__output o; + uint8_t* d_ptr = dst.ptr; + size_t d_len = dst.len; + const uint8_t* s_ptr = src.ptr; + size_t s_len = src.len; + bool pad = false; + + while (s_len >= 4) { + uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr); + uint32_t s0 = alphabet[0xFF & (s >> 0)]; + uint32_t s1 = alphabet[0xFF & (s >> 8)]; + uint32_t s2 = alphabet[0xFF & (s >> 16)]; + uint32_t s3 = alphabet[0xFF & (s >> 24)]; + + if (((s0 | s1 | s2 | s3) & 0xC0) != 0) { + if (s_len > 4) { + o.status.repr = wuffs_base__error__bad_data; + goto done; + } else if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + goto done; + } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) && + (s_ptr[3] == '=')) { + pad = true; + if (s_ptr[2] == '=') { + goto src2; + } + goto src3; + } + o.status.repr = wuffs_base__error__bad_data; + goto done; + } + + if (d_len < 3) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + + s_ptr += 4; + s_len -= 4; + s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0); + *d_ptr++ = (uint8_t)(s >> 16); + *d_ptr++ = (uint8_t)(s >> 8); + *d_ptr++ = (uint8_t)(s >> 0); + d_len -= 3; + } + + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + goto done; + } + + if (s_len == 0) { + o.status.repr = NULL; + goto done; + } else if (s_len == 1) { + o.status.repr = wuffs_base__error__bad_data; + goto done; + } else if (s_len == 2) { + goto src2; + } + +src3: + do { + uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr); + uint32_t s0 = alphabet[0xFF & (s >> 0)]; + uint32_t s1 = alphabet[0xFF & (s >> 8)]; + uint32_t s2 = alphabet[0xFF & (s >> 16)]; + if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) { + o.status.repr = wuffs_base__error__bad_data; + goto done; + } + if (d_len < 2) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + s_ptr += pad ? 4 : 3; + s = (s0 << 18) | (s1 << 12) | (s2 << 6); + *d_ptr++ = (uint8_t)(s >> 16); + *d_ptr++ = (uint8_t)(s >> 8); + o.status.repr = NULL; + goto done; + } while (0); + +src2: + do { + uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr); + uint32_t s0 = alphabet[0xFF & (s >> 0)]; + uint32_t s1 = alphabet[0xFF & (s >> 8)]; + if ((s0 & 0xC0) || (s1 & 0xCF)) { + o.status.repr = wuffs_base__error__bad_data; + goto done; + } + if (d_len < 1) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + s_ptr += pad ? 4 : 2; + s = (s0 << 18) | (s1 << 12); + *d_ptr++ = (uint8_t)(s >> 16); + o.status.repr = NULL; + goto done; + } while (0); + +done: + o.num_dst = (size_t)(d_ptr - dst.ptr); + o.num_src = (size_t)(s_ptr - src.ptr); + return o; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // +wuffs_base__base_64__encode(wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 src, + bool src_closed, + uint32_t options) { + const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET) + ? wuffs_base__base_64__encode_url + : wuffs_base__base_64__encode_std; + wuffs_base__transform__output o; + uint8_t* d_ptr = dst.ptr; + size_t d_len = dst.len; + const uint8_t* s_ptr = src.ptr; + size_t s_len = src.len; + + do { + while (s_len >= 3) { + if (d_len < 4) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr); + s_ptr += 3; + s_len -= 3; + *d_ptr++ = alphabet[0x3F & (s >> 18)]; + *d_ptr++ = alphabet[0x3F & (s >> 12)]; + *d_ptr++ = alphabet[0x3F & (s >> 6)]; + *d_ptr++ = alphabet[0x3F & (s >> 0)]; + d_len -= 4; + } + + if (!src_closed) { + o.status.repr = wuffs_base__suspension__short_read; + goto done; + } + + if (s_len == 2) { + if (d_len < + ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr))) + << 8; + s_ptr += 2; + *d_ptr++ = alphabet[0x3F & (s >> 18)]; + *d_ptr++ = alphabet[0x3F & (s >> 12)]; + *d_ptr++ = alphabet[0x3F & (s >> 6)]; + if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) { + *d_ptr++ = '='; + } + o.status.repr = NULL; + goto done; + + } else if (s_len == 1) { + if (d_len < + ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) { + o.status.repr = wuffs_base__suspension__short_write; + goto done; + } + uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr))) + << 16; + s_ptr += 1; + *d_ptr++ = alphabet[0x3F & (s >> 18)]; + *d_ptr++ = alphabet[0x3F & (s >> 12)]; + if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) { + *d_ptr++ = '='; + *d_ptr++ = '='; + } + o.status.repr = NULL; + goto done; + + } else { + o.status.repr = NULL; + goto done; + } + } while (0); + +done: + o.num_dst = (size_t)(d_ptr - dst.ptr); + o.num_src = (size_t)(s_ptr - src.ptr); + return o; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__MAGIC) + +// ---------------- Magic Numbers + +// ICO doesn't start with a magic identifier. Instead, see if the opening bytes +// are plausibly ICO. +// +// Callers should have already verified that (prefix_data.len >= 2) and the +// first two bytes are 0x00. +// +// See: +// - https://docs.fileformat.com/image/ico/ +static int32_t // +wuffs_base__magic_number_guess_fourcc__maybe_ico( + wuffs_base__slice_u8 prefix_data, + bool prefix_closed) { + // Allow-list for the Image Type field. + if (prefix_data.len < 4) { + return prefix_closed ? 0 : -1; + } else if (prefix_data.ptr[3] != 0) { + return 0; + } + switch (prefix_data.ptr[2]) { + case 0x01: // ICO + case 0x02: // CUR + break; + default: + return 0; + } + + // The Number Of Images should be positive. + if (prefix_data.len < 6) { + return prefix_closed ? 0 : -1; + } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) { + return 0; + } + + // The first ICONDIRENTRY's fourth byte should be zero. + if (prefix_data.len < 10) { + return prefix_closed ? 0 : -1; + } else if (prefix_data.ptr[9] != 0) { + return 0; + } + + // TODO: have a separate FourCC for CUR? + return 0x49434F20; // 'ICO 'be +} + +// TGA doesn't start with a magic identifier. Instead, see if the opening bytes +// are plausibly TGA. +// +// Callers should have already verified that (prefix_data.len >= 2) and the +// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or +// 0x01. +// +// See: +// - https://docs.fileformat.com/image/tga/ +// - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf +static int32_t // +wuffs_base__magic_number_guess_fourcc__maybe_tga( + wuffs_base__slice_u8 prefix_data, + bool prefix_closed) { + // Allow-list for the Image Type field. + if (prefix_data.len < 3) { + return prefix_closed ? 0 : -1; + } + switch (prefix_data.ptr[2]) { + case 0x01: + case 0x02: + case 0x03: + case 0x09: + case 0x0A: + case 0x0B: + break; + default: + // TODO: 0x20 and 0x21 are invalid, according to the spec, but are + // apparently unofficial extensions. + return 0; + } + + // Allow-list for the Color Map Entry Size field (if the Color Map Type field + // is non-zero) or else all the Color Map fields should be zero. + if (prefix_data.len < 8) { + return prefix_closed ? 0 : -1; + } else if (prefix_data.ptr[1] != 0x00) { + switch (prefix_data.ptr[7]) { + case 0x0F: + case 0x10: + case 0x18: + case 0x20: + break; + default: + return 0; + } + } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] | + prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) { + return 0; + } + + // Allow-list for the Pixel Depth field. + if (prefix_data.len < 17) { + return prefix_closed ? 0 : -1; + } + switch (prefix_data.ptr[16]) { + case 0x01: + case 0x08: + case 0x0F: + case 0x10: + case 0x18: + case 0x20: + break; + default: + return 0; + } + + return 0x54474120; // 'TGA 'be +} + +WUFFS_BASE__MAYBE_STATIC int32_t // +wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data, + bool prefix_closed) { + // This is similar to (but different from): + // - the magic/Magdir tables under https://github.com/file/file + // - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/ + + // table holds the 'magic numbers' (which are actually variable length + // strings). The strings may contain NUL bytes, so the "const char* magic" + // value starts with the length-minus-1 of the 'magic number'. + // + // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer + // matches) and finally by magic[2:]. When multiple entries match, the + // longest one wins. + // + // The fourcc field might be negated, in which case there's further + // specialization (see § below). + static struct { + int32_t fourcc; + const char* magic; + } table[] = { + {-0x30302020, "\x01\x00\x00"}, // '00 'be + {+0x475A2020, "\x02\x1F\x8B\x08"}, // GZ + {+0x5A535444, "\x03\x28\xB5\x2F\xFD"}, // ZSTD + {+0x425A3220, "\x02\x42\x5A\x68"}, // BZ2 + {+0x424D5020, "\x01\x42\x4D"}, // BMP + {+0x47494620, "\x03\x47\x49\x46\x38"}, // GIF + {+0x54494646, "\x03\x49\x49\x2A\x00"}, // TIFF (little-endian) + {+0x54494646, "\x03\x4D\x4D\x00\x2A"}, // TIFF (big-endian) + {+0x4E50424D, "\x02\x50\x35\x0A"}, // NPBM (P5; *.pgm) + {+0x4E50424D, "\x02\x50\x36\x0A"}, // NPBM (P6; *.ppm) + {-0x52494646, "\x03\x52\x49\x46\x46"}, // RIFF + {+0x4C5A4D41, "\x04\x5D\x00\x10\x00\x00"}, // LZMA + {+0x4C5A4D41, "\x02\x5D\x00\x00"}, // LZMA + {+0x4E494520, "\x02\x6E\xC3\xAF"}, // NIE + {+0x514F4920, "\x03\x71\x6F\x69\x66"}, // QOI + {+0x5A4C4942, "\x01\x78\x9C"}, // ZLIB + {+0x504E4720, "\x03\x89\x50\x4E\x47"}, // PNG + {+0x585A2020, "\x04\xFD\x37\x7A\x58\x5A"}, // XZ + {+0x4A504547, "\x01\xFF\xD8"}, // JPEG + }; + static const size_t table_len = sizeof(table) / sizeof(table[0]); + + if (prefix_data.len == 0) { + return prefix_closed ? 0 : -1; + } + uint8_t pre_first_byte = prefix_data.ptr[0]; + + int32_t fourcc = 0; + size_t i; + for (i = 0; i < table_len; i++) { + uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1])); + if (pre_first_byte < mag_first_byte) { + break; + } else if (pre_first_byte > mag_first_byte) { + continue; + } + fourcc = table[i].fourcc; + + uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0])); + if (mag_remaining_len == 0) { + goto match; + } + + const char* mag_remaining_ptr = table[i].magic + 2; + uint8_t* pre_remaining_ptr = prefix_data.ptr + 1; + size_t pre_remaining_len = prefix_data.len - 1; + if (pre_remaining_len < mag_remaining_len) { + if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) { + return prefix_closed ? 0 : -1; + } + } else { + if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) { + goto match; + } + } + } + + if (prefix_data.len < 2) { + return prefix_closed ? 0 : -1; + } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) { + return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data, + prefix_closed); + } + + return 0; + +match: + // Negative FourCC values (see § above) are further specialized. + if (fourcc < 0) { + fourcc = -fourcc; + + if (fourcc == 0x52494646) { // 'RIFF'be + if (prefix_data.len < 12) { + return prefix_closed ? 0 : -1; + } + uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8); + if (x == 0x57454250) { // 'WEBP'be + return 0x57454250; // 'WEBP'be + } + + } else if (fourcc == 0x30302020) { // '00 'be + // Binary data starting with multiple 0x00 NUL bytes is quite common. + // Unfortunately, some file formats also don't start with a magic + // identifier, so we have to use heuristics (where the order matters, the + // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe + // it's TGA, ICO/CUR, etc. Maybe it's something else. + int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga( + prefix_data, prefix_closed); + if (tga != 0) { + return tga; + } + int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico( + prefix_data, prefix_closed); + if (ico != 0) { + return ico; + } + if (prefix_data.len < 4) { + return prefix_closed ? 0 : -1; + } else if ((prefix_data.ptr[2] != 0x00) && + ((prefix_data.ptr[2] >= 0x80) || + (prefix_data.ptr[3] != 0x00))) { + // Roughly speaking, this could be a non-degenerate (non-0-width and + // non-0-height) WBMP image. + return 0x57424D50; // 'WBMP'be + } + return 0; + } + } + return fourcc; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV) + +// ---------------- Pixel Swizzler + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len); + +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len); + +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +// -------- + +static inline uint32_t // +wuffs_base__swap_u32_argb_abgr(uint32_t u) { + uint32_t o = u & 0xFF00FF00ul; + uint32_t r = u & 0x00FF0000ul; + uint32_t b = u & 0x000000FFul; + return o | (r >> 16) | (b << 16); +} + +static inline uint64_t // +wuffs_base__swap_u64_argb_abgr(uint64_t u) { + uint64_t o = u & 0xFFFF0000FFFF0000ull; + uint64_t r = u & 0x0000FFFF00000000ull; + uint64_t b = u & 0x000000000000FFFFull; + return o | (r >> 32) | (b << 32); +} + +static inline uint32_t // +wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) { + uint32_t a = ((uint32_t)(0xFF & (c >> 56))); + uint32_t r = ((uint32_t)(0xFF & (c >> 40))); + uint32_t g = ((uint32_t)(0xFF & (c >> 24))); + uint32_t b = ((uint32_t)(0xFF & (c >> 8))); + return (a << 24) | (b << 16) | (g << 8) | (r << 0); +} + +// -------- + +WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul // +wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb, + uint32_t x, + uint32_t y) { + if (!pb || (x >= pb->pixcfg.private_impl.width) || + (y >= pb->pixcfg.private_impl.height)) { + return 0; + } + + if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { + // TODO: support planar formats. + return 0; + } + + size_t stride = pb->private_impl.planes[0].stride; + const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)); + + switch (pb->pixcfg.private_impl.pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))); + + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: { + uint8_t* palette = pb->private_impl.planes[3].ptr; + return wuffs_base__peek_u32le__no_bounds_check(palette + + (4 * ((size_t)row[x]))); + } + + // Common formats above. Rarer formats below. + + case WUFFS_BASE__PIXEL_FORMAT__Y: + return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x]))); + case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: + return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1]))); + case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: + return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0]))); + + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: { + uint8_t* palette = pb->private_impl.planes[3].ptr; + return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(palette + + (4 * ((size_t)row[x])))); + } + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x)))); + case WUFFS_BASE__PIXEL_FORMAT__BGR: + return 0xFF000000 | + wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))); + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x)))); + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + return 0xFF000000 | + wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))); + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__swap_u32_argb_abgr( + 0xFF000000 | + wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)))); + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + return wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(row + + (4 * ((size_t)x))))); + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + return wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + return wuffs_base__swap_u32_argb_abgr( + 0xFF000000 | + wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); + + default: + // TODO: support more formats. + break; + } + + return 0; +} + +// -------- + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_buffer__set_color_u32_at( + wuffs_base__pixel_buffer* pb, + uint32_t x, + uint32_t y, + wuffs_base__color_u32_argb_premul color) { + if (!pb) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if ((x >= pb->pixcfg.private_impl.width) || + (y >= pb->pixcfg.private_impl.height)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + + if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { + // TODO: support planar formats. + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + + size_t stride = pb->private_impl.planes[0].stride; + uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)); + + switch (pb->pixcfg.private_impl.pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color); + break; + + // Common formats above. Rarer formats below. + + case WUFFS_BASE__PIXEL_FORMAT__Y: + wuffs_base__poke_u8__no_bounds_check( + row + ((size_t)x), + wuffs_base__color_u32_argb_premul__as__color_u8_gray(color)); + break; + case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: + wuffs_base__poke_u16le__no_bounds_check( + row + (2 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u16_gray(color)); + break; + case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: + wuffs_base__poke_u16be__no_bounds_check( + row + (2 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u16_gray(color)); + break; + + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: + wuffs_base__poke_u8__no_bounds_check( + row + ((size_t)x), wuffs_base__pixel_palette__closest_element( + wuffs_base__pixel_buffer__palette(pb), + pb->pixcfg.private_impl.pixfmt, color)); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + wuffs_base__poke_u16le__no_bounds_check( + row + (2 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color)); + break; + case WUFFS_BASE__PIXEL_FORMAT__BGR: + wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color); + break; + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + wuffs_base__poke_u32le__no_bounds_check( + row + (4 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + color)); + break; + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + wuffs_base__poke_u64le__no_bounds_check( + row + (8 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( + color)); + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + wuffs_base__poke_u24le__no_bounds_check( + row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color)); + break; + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + wuffs_base__poke_u32le__no_bounds_check( + row + (4 * ((size_t)x)), + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + wuffs_base__swap_u32_argb_abgr(color))); + break; + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + wuffs_base__poke_u32le__no_bounds_check( + row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color)); + break; + + default: + // TODO: support more formats. + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + + return wuffs_base__make_status(NULL); +} + +// -------- + +static inline void // +wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + uint16_t color) { + size_t stride = pb->private_impl.planes[0].stride; + uint32_t width = wuffs_base__rect_ie_u32__width(&rect); + if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { + uint8_t* ptr = + pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); + uint32_t height = wuffs_base__rect_ie_u32__height(&rect); + size_t n; + for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { + wuffs_base__poke_u16le__no_bounds_check(ptr, color); + ptr += 2; + } + return; + } + + uint32_t y; + for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { + uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + + (2 * ((size_t)rect.min_incl_x)); + uint32_t n; + for (n = width; n > 0; n--) { + wuffs_base__poke_u16le__no_bounds_check(ptr, color); + ptr += 2; + } + } +} + +static inline void // +wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + uint32_t color) { + size_t stride = pb->private_impl.planes[0].stride; + uint32_t width = wuffs_base__rect_ie_u32__width(&rect); + if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { + uint8_t* ptr = + pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); + uint32_t height = wuffs_base__rect_ie_u32__height(&rect); + size_t n; + for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { + wuffs_base__poke_u24le__no_bounds_check(ptr, color); + ptr += 3; + } + return; + } + + uint32_t y; + for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { + uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + + (3 * ((size_t)rect.min_incl_x)); + uint32_t n; + for (n = width; n > 0; n--) { + wuffs_base__poke_u24le__no_bounds_check(ptr, color); + ptr += 3; + } + } +} + +static inline void // +wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + uint32_t color) { + size_t stride = pb->private_impl.planes[0].stride; + uint32_t width = wuffs_base__rect_ie_u32__width(&rect); + if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { + uint8_t* ptr = + pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); + uint32_t height = wuffs_base__rect_ie_u32__height(&rect); + size_t n; + for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { + wuffs_base__poke_u32le__no_bounds_check(ptr, color); + ptr += 4; + } + return; + } + + uint32_t y; + for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { + uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + + (4 * ((size_t)rect.min_incl_x)); + uint32_t n; + for (n = width; n > 0; n--) { + wuffs_base__poke_u32le__no_bounds_check(ptr, color); + ptr += 4; + } + } +} + +static inline void // +wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + uint64_t color) { + size_t stride = pb->private_impl.planes[0].stride; + uint32_t width = wuffs_base__rect_ie_u32__width(&rect); + if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { + uint8_t* ptr = + pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); + uint32_t height = wuffs_base__rect_ie_u32__height(&rect); + size_t n; + for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { + wuffs_base__poke_u64le__no_bounds_check(ptr, color); + ptr += 8; + } + return; + } + + uint32_t y; + for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { + uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + + (8 * ((size_t)rect.min_incl_x)); + uint32_t n; + for (n = width; n > 0; n--) { + wuffs_base__poke_u64le__no_bounds_check(ptr, color); + ptr += 8; + } + } +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_buffer__set_color_u32_fill_rect( + wuffs_base__pixel_buffer* pb, + wuffs_base__rect_ie_u32 rect, + wuffs_base__color_u32_argb_premul color) { + if (!pb) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) { + return wuffs_base__make_status(NULL); + } + wuffs_base__rect_ie_u32 bounds = + wuffs_base__pixel_config__bounds(&pb->pixcfg); + if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + + if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { + // TODO: support planar formats. + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + + switch (pb->pixcfg.private_impl.pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect, color); + return wuffs_base__make_status(NULL); + + // Common formats above. Rarer formats below. + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx( + pb, rect, + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color)); + return wuffs_base__make_status(NULL); + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect, color); + return wuffs_base__make_status(NULL); + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( + pb, rect, + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + color)); + return wuffs_base__make_status(NULL); + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx( + pb, rect, + wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( + color)); + return wuffs_base__make_status(NULL); + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( + pb, rect, + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + wuffs_base__swap_u32_argb_abgr(color))); + return wuffs_base__make_status(NULL); + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( + pb, rect, wuffs_base__swap_u32_argb_abgr(color)); + return wuffs_base__make_status(NULL); + } + + uint32_t y; + for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { + uint32_t x; + for (x = rect.min_incl_x; x < rect.max_excl_x; x++) { + wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color); + } + } + return wuffs_base__make_status(NULL); +} + +// -------- + +WUFFS_BASE__MAYBE_STATIC uint8_t // +wuffs_base__pixel_palette__closest_element( + wuffs_base__slice_u8 palette_slice, + wuffs_base__pixel_format palette_format, + wuffs_base__color_u32_argb_premul c) { + size_t n = palette_slice.len / 4; + if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4); + } + size_t best_index = 0; + uint64_t best_score = 0xFFFFFFFFFFFFFFFF; + + // Work in 16-bit color. + uint32_t ca = 0x101 * (0xFF & (c >> 24)); + uint32_t cr = 0x101 * (0xFF & (c >> 16)); + uint32_t cg = 0x101 * (0xFF & (c >> 8)); + uint32_t cb = 0x101 * (0xFF & (c >> 0)); + + switch (palette_format.repr) { + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: { + bool nonpremul = palette_format.repr == + WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL; + + size_t i; + for (i = 0; i < n; i++) { + // Work in 16-bit color. + uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0])); + uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1])); + uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2])); + uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3])); + + // Convert to premultiplied alpha. + if (nonpremul && (pa != 0xFFFF)) { + pb = (pb * pa) / 0xFFFF; + pg = (pg * pa) / 0xFFFF; + pr = (pr * pa) / 0xFFFF; + } + + // These deltas are conceptually int32_t (signed) but after squaring, + // it's equivalent to work in uint32_t (unsigned). + pb -= cb; + pg -= cg; + pr -= cr; + pa -= ca; + uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) + + ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa)); + if (best_score > score) { + best_score = score; + best_index = i; + } + } + break; + } + } + + return (uint8_t)best_index; +} + +// -------- + +static inline uint32_t // +wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul, + uint32_t src_nonpremul) { + // Extract 16-bit color components. + // + // If the destination is transparent then SRC_OVER is equivalent to SRC: just + // return src_nonpremul. This isn't just an optimization (skipping the rest + // of the function's computation). It also preserves the nonpremul + // distinction between e.g. transparent red and transparent blue that would + // otherwise be lost by converting from nonpremul to premul and back. + uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24)); + if (da == 0) { + return src_nonpremul; + } + uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16)); + uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8)); + uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0)); + uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24)); + uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16)); + uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8)); + uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0)); + + // Convert dst from nonpremul to premul. + dr = (dr * da) / 0xFFFF; + dg = (dg * da) / 0xFFFF; + db = (db * da) / 0xFFFF; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert dst from premul to nonpremul. + if (da != 0) { + dr = (dr * 0xFFFF) / da; + dg = (dg * 0xFFFF) / da; + db = (db * 0xFFFF) / da; + } + + // Convert from 16-bit color to 8-bit color. + da >>= 8; + dr >>= 8; + dg >>= 8; + db >>= 8; + + // Combine components. + return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); +} + +static inline uint64_t // +wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul, + uint64_t src_nonpremul) { + // Extract components. + // + // If the destination is transparent then SRC_OVER is equivalent to SRC: just + // return src_nonpremul. This isn't just an optimization (skipping the rest + // of the function's computation). It also preserves the nonpremul + // distinction between e.g. transparent red and transparent blue that would + // otherwise be lost by converting from nonpremul to premul and back. + uint64_t da = 0xFFFF & (dst_nonpremul >> 48); + if (da == 0) { + return src_nonpremul; + } + uint64_t dr = 0xFFFF & (dst_nonpremul >> 32); + uint64_t dg = 0xFFFF & (dst_nonpremul >> 16); + uint64_t db = 0xFFFF & (dst_nonpremul >> 0); + uint64_t sa = 0xFFFF & (src_nonpremul >> 48); + uint64_t sr = 0xFFFF & (src_nonpremul >> 32); + uint64_t sg = 0xFFFF & (src_nonpremul >> 16); + uint64_t sb = 0xFFFF & (src_nonpremul >> 0); + + // Convert dst from nonpremul to premul. + dr = (dr * da) / 0xFFFF; + dg = (dg * da) / 0xFFFF; + db = (db * da) / 0xFFFF; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint64_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert dst from premul to nonpremul. + if (da != 0) { + dr = (dr * 0xFFFF) / da; + dg = (dg * 0xFFFF) / da; + db = (db * 0xFFFF) / da; + } + + // Combine components. + return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); +} + +static inline uint32_t // +wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul, + uint32_t src_premul) { + // Extract 16-bit color components. + uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24)); + uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16)); + uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8)); + uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0)); + uint32_t sa = 0x101 * (0xFF & (src_premul >> 24)); + uint32_t sr = 0x101 * (0xFF & (src_premul >> 16)); + uint32_t sg = 0x101 * (0xFF & (src_premul >> 8)); + uint32_t sb = 0x101 * (0xFF & (src_premul >> 0)); + + // Convert dst from nonpremul to premul. + dr = (dr * da) / 0xFFFF; + dg = (dg * da) / 0xFFFF; + db = (db * da) / 0xFFFF; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert dst from premul to nonpremul. + if (da != 0) { + dr = (dr * 0xFFFF) / da; + dg = (dg * 0xFFFF) / da; + db = (db * 0xFFFF) / da; + } + + // Convert from 16-bit color to 8-bit color. + da >>= 8; + dr >>= 8; + dg >>= 8; + db >>= 8; + + // Combine components. + return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); +} + +static inline uint64_t // +wuffs_base__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul, + uint64_t src_premul) { + // Extract components. + uint64_t da = 0xFFFF & (dst_nonpremul >> 48); + uint64_t dr = 0xFFFF & (dst_nonpremul >> 32); + uint64_t dg = 0xFFFF & (dst_nonpremul >> 16); + uint64_t db = 0xFFFF & (dst_nonpremul >> 0); + uint64_t sa = 0xFFFF & (src_premul >> 48); + uint64_t sr = 0xFFFF & (src_premul >> 32); + uint64_t sg = 0xFFFF & (src_premul >> 16); + uint64_t sb = 0xFFFF & (src_premul >> 0); + + // Convert dst from nonpremul to premul. + dr = (dr * da) / 0xFFFF; + dg = (dg * da) / 0xFFFF; + db = (db * da) / 0xFFFF; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint64_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert dst from premul to nonpremul. + if (da != 0) { + dr = (dr * 0xFFFF) / da; + dg = (dg * 0xFFFF) / da; + db = (db * 0xFFFF) / da; + } + + // Combine components. + return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); +} + +static inline uint32_t // +wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul, + uint32_t src_nonpremul) { + // Extract 16-bit color components. + uint32_t da = 0x101 * (0xFF & (dst_premul >> 24)); + uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16)); + uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8)); + uint32_t db = 0x101 * (0xFF & (dst_premul >> 0)); + uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24)); + uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16)); + uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8)); + uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0)); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 8-bit color. + da >>= 8; + dr >>= 8; + dg >>= 8; + db >>= 8; + + // Combine components. + return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); +} + +static inline uint64_t // +wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul, + uint64_t src_nonpremul) { + // Extract components. + uint64_t da = 0xFFFF & (dst_premul >> 48); + uint64_t dr = 0xFFFF & (dst_premul >> 32); + uint64_t dg = 0xFFFF & (dst_premul >> 16); + uint64_t db = 0xFFFF & (dst_premul >> 0); + uint64_t sa = 0xFFFF & (src_nonpremul >> 48); + uint64_t sr = 0xFFFF & (src_nonpremul >> 32); + uint64_t sg = 0xFFFF & (src_nonpremul >> 16); + uint64_t sb = 0xFFFF & (src_nonpremul >> 0); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint64_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Combine components. + return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); +} + +static inline uint32_t // +wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul, + uint32_t src_premul) { + // Extract 16-bit color components. + uint32_t da = 0x101 * (0xFF & (dst_premul >> 24)); + uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16)); + uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8)); + uint32_t db = 0x101 * (0xFF & (dst_premul >> 0)); + uint32_t sa = 0x101 * (0xFF & (src_premul >> 24)); + uint32_t sr = 0x101 * (0xFF & (src_premul >> 16)); + uint32_t sg = 0x101 * (0xFF & (src_premul >> 8)); + uint32_t sb = 0x101 * (0xFF & (src_premul >> 0)); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + da = sa + ((da * ia) / 0xFFFF); + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert from 16-bit color to 8-bit color. + da >>= 8; + dr >>= 8; + dg >>= 8; + db >>= 8; + + // Combine components. + return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(uint8_t* dst_ptr, + size_t dst_len, + const uint8_t* src_ptr, + size_t src_len, + bool nonpremul) { + size_t len = (dst_len < src_len ? dst_len : src_len) / 4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n--) { + uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s); + if (nonpremul) { + argb = + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb); + } + uint32_t b5 = 0x1F & (argb >> (8 - 5)); + uint32_t g6 = 0x3F & (argb >> (16 - 6)); + uint32_t r5 = 0x1F & (argb >> (24 - 5)); + uint32_t alpha = argb & 0xFF000000; + wuffs_base__poke_u32le__no_bounds_check( + d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0)); + s += 4; + d += 4; + } + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t len = (dst_len < src_len ? dst_len : src_len) / 3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n--) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s2; + d[1] = s1; + d[2] = s0; + s += 3; + d += 3; + } + return len; +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t len = (dst_len < src_len ? dst_len : src_len) / 4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E, // + +0x0B, +0x08, +0x09, +0x0A, // + +0x07, +0x04, +0x05, +0x06, // + +0x03, +0x00, +0x01, +0x02); + + while (n >= 4) { + __m128i x; + x = _mm_lddqu_si128((const __m128i*)(const void*)s); + x = _mm_shuffle_epi8(x, shuffle); + _mm_storeu_si128((__m128i*)(void*)d, x); + + s += 4 * 4; + d += 4 * 4; + n -= 4; + } + + while (n--) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + uint8_t s3 = s[3]; + d[0] = s2; + d[1] = s1; + d[2] = s0; + d[3] = s3; + s += 4; + d += 4; + } + return len; +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +static uint64_t // +wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t len = (dst_len < src_len ? dst_len : src_len) / 4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n--) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + uint8_t s3 = s[3]; + d[0] = s2; + d[1] = s1; + d[2] = s0; + d[3] = s3; + s += 4; + d += 4; + } + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t len = (dst_len < src_len) ? dst_len : src_len; + if (len > 0) { + memmove(dst_ptr, src_ptr, len); + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__copy_2_2(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len2 = src_len / 2; + size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; + if (len > 0) { + memmove(dst_ptr, src_ptr, len * 2); + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len3 = src_len / 3; + size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3; + if (len > 0) { + memmove(dst_ptr, src_ptr, len * 3); + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + if (len > 0) { + memmove(dst_ptr, src_ptr, len * 4); + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__copy_8_8(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len8 = src_len / 8; + size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8; + if (len > 0) { + memmove(dst_ptr, src_ptr, len * 8); + } + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len3 = src_len / 3; + size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t b5 = s[0] >> 3; + uint32_t g6 = s[1] >> 2; + uint32_t r5 = s[2] >> 3; + uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); + + s += 1 * 3; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t b5 = s[0] >> 3; + uint32_t g6 = s[1] >> 2; + uint32_t r5 = s[2] >> 3; + uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len8 = src_len / 8; + size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))))); + + s += 1 * 8; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sr = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sb = 0x101 * ((uint32_t)s[0]); + + // Convert from 565 color to 16-bit color. + uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); + uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); + uint32_t dr = (0x8421 * old_r5) >> 4; + uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); + uint32_t dg = (0x1041 * old_g6) >> 2; + uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); + uint32_t db = (0x8421 * old_b5) >> 4; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 565 color and combine the components. + uint32_t new_r5 = 0x1F & (dr >> 11); + uint32_t new_g6 = 0x3F & (dg >> 10); + uint32_t new_b5 = 0x1F & (db >> 11); + uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len8 = src_len / 8; + size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6)); + uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4)); + uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2)); + uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0)); + + // Convert from 565 color to 16-bit color. + uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); + uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); + uint32_t dr = (0x8421 * old_r5) >> 4; + uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); + uint32_t dg = (0x1041 * old_g6) >> 2; + uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); + uint32_t db = (0x8421 * old_b5) >> 4; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 565 color and combine the components. + uint32_t new_r5 = 0x1F & (dr >> 11); + uint32_t new_g6 = 0x3F & (dg >> 10); + uint32_t new_b5 = 0x1F & (db >> 11); + uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); + + s += 1 * 8; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sr = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sb = 0x101 * ((uint32_t)s[0]); + + // Convert from 565 color to 16-bit color. + uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); + uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); + uint32_t dr = (0x8421 * old_r5) >> 4; + uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); + uint32_t dg = (0x1041 * old_g6) >> 2; + uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); + uint32_t db = (0x8421 * old_b5) >> 4; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert from 16-bit color to 565 color and combine the components. + uint32_t new_r5 = 0x1F & (dr >> 11); + uint32_t new_g6 = 0x3F & (dg >> 10); + uint32_t new_b5 = 0x1F & (db >> 11); + uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len3 = src_len / 3; + size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t r5 = s[0] >> 3; + uint32_t g6 = s[1] >> 2; + uint32_t b5 = s[2] >> 3; + uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); + + s += 1 * 3; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))))); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sb = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sr = 0x101 * ((uint32_t)s[0]); + + // Convert from 565 color to 16-bit color. + uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); + uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); + uint32_t dr = (0x8421 * old_r5) >> 4; + uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); + uint32_t dg = (0x1041 * old_g6) >> 2; + uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); + uint32_t db = (0x8421 * old_b5) >> 4; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 565 color and combine the components. + uint32_t new_r5 = 0x1F & (dr >> 11); + uint32_t new_g6 = 0x3F & (dg >> 10); + uint32_t new_b5 = 0x1F & (db >> 11); + uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len4 = src_len / 4; + size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sb = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sr = 0x101 * ((uint32_t)s[0]); + + // Convert from 565 color to 16-bit color. + uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); + uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); + uint32_t dr = (0x8421 * old_r5) >> 4; + uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); + uint32_t dg = (0x1041 * old_g6) >> 2; + uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); + uint32_t db = (0x8421 * old_b5) >> 4; + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert from 16-bit color to 565 color and combine the components. + uint32_t new_r5 = 0x1F & (dr >> 11); + uint32_t new_g6 = 0x3F & (dg >> 10); + uint32_t new_b5 = 0x1F & (db >> 11); + uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); + + s += 1 * 4; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t y5 = s[0] >> 3; + uint32_t y6 = s[0] >> 2; + uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); + + s += 1 * 1; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len2 = src_len / 2; + size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t y5 = s[0] >> 3; + uint32_t y6 = s[0] >> 2; + uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0); + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); + + s += 1 * 2; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len2 = dst_len / 2; + size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + const size_t loop_unroll_count = 4; + + while (n >= loop_unroll_count) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4))); + wuffs_base__poke_u16le__no_bounds_check( + d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check( + dst_palette_ptr + ((size_t)s[1] * 4))); + wuffs_base__poke_u16le__no_bounds_check( + d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check( + dst_palette_ptr + ((size_t)s[2] * 4))); + wuffs_base__poke_u16le__no_bounds_check( + d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check( + dst_palette_ptr + ((size_t)s[3] * 4))); + + s += loop_unroll_count * 1; + d += loop_unroll_count * 2; + n -= loop_unroll_count; + } + + while (n >= 1) { + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4))); + + s += 1 * 1; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len2 = dst_len / 2; + size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2))); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + wuffs_base__poke_u16le__no_bounds_check( + d + (0 * 2), + wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( + wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0))); + + s += 1 * 1; + d += 1 * 2; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len2 = dst_len / 2; + size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0); + } + + s += 1 * 1; + d += 1 * 2; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgr_565(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len2 = src_len / 2; + size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 2; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len8 = src_len / 8; + size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = + wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 8; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sr = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sb = 0x101 * ((uint32_t)s[0]); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len8 = src_len / 8; + size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6)); + uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4)); + uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2)); + uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0)); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 8; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_premul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s0; + d[1] = s1; + d[2] = s2; + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sr = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sb = 0x101 * ((uint32_t)s[0]); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len8 = src_len / 8; + size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 8; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sb = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sr = 0x101 * ((uint32_t)s[0]); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len8 = src_len / 8; + size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6)); + uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4)); + uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2)); + uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0)); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (nonpremul) over dst (premul). + dr = ((sr * sa) + (dr * ia)) / 0xFFFF; + dg = ((sg * sa) + (dg * ia)) / 0xFFFF; + db = ((sb * sa) + (db * ia)) / 0xFFFF; + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 8; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_premul__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s2; + d[1] = s1; + d[2] = s0; + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + // Extract 16-bit color components. + uint32_t dr = 0x101 * ((uint32_t)d[2]); + uint32_t dg = 0x101 * ((uint32_t)d[1]); + uint32_t db = 0x101 * ((uint32_t)d[0]); + uint32_t sa = 0x101 * ((uint32_t)s[3]); + uint32_t sb = 0x101 * ((uint32_t)s[2]); + uint32_t sg = 0x101 * ((uint32_t)s[1]); + uint32_t sr = 0x101 * ((uint32_t)s[0]); + + // Calculate the inverse of the src-alpha: how much of the dst to keep. + uint32_t ia = 0xFFFF - sa; + + // Composite src (premul) over dst (premul). + dr = sr + ((dr * ia) / 0xFFFF); + dg = sg + ((dg * ia) / 0xFFFF); + db = sb + ((db * ia) / 0xFFFF); + + // Convert from 16-bit color to 8-bit color. + d[0] = (uint8_t)(db >> 8); + d[1] = (uint8_t)(dg >> 8); + d[2] = (uint8_t)(dr >> 8); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgr__rgbx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint8_t b0 = s[0]; + uint8_t b1 = s[1]; + uint8_t b2 = s[2]; + d[0] = b2; + d[1] = b1; + d[2] = b0; + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__color_u64__as__color_u32( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint64_t d0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); + uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u64__as__color_u32( + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + uint8_t s3 = s[3]; + d[0] = s0; + d[1] = s0; + d[2] = s1; + d[3] = s1; + d[4] = s2; + d[5] = s2; + d[6] = s3; + d[7] = s3; + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len8 = src_len / 8; + size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); + + s += 1 * 8; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t s0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); + wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len8 = dst_len / 8; + size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); + + s += 1 * 1; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + uint8_t s3 = s[3]; + d[0] = s2; + d[1] = s2; + d[2] = s1; + d[3] = s1; + d[4] = s0; + d[5] = s0; + d[6] = s3; + d[7] = s3; + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = + wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t s0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( + wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); + wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); + uint64_t s0 = + wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0)); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint64_t d0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); + uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u64__as__color_u32( + wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( + s0))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint64_t d0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); + uint64_t s0 = wuffs_base__swap_u64_argb_abgr( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u64__as__color_u32( + wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); + uint32_t s0 = wuffs_base__swap_u32_argb_abgr( + wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0)); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len3 = src_len / 3; + size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + 0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3))); + + s += 1 * 3; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len2 = src_len / 2; + size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))); + + s += 1 * 2; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + 0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len3 = src_len / 3; + size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B, // + +0x00, +0x06, +0x07, +0x08, // + +0x00, +0x03, +0x04, +0x05, // + +0x00, +0x00, +0x01, +0x02); + __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00); + + while (n >= 6) { + __m128i x; + x = _mm_lddqu_si128((const __m128i*)(const void*)s); + x = _mm_shuffle_epi8(x, shuffle); + x = _mm_or_si128(x, or_ff); + _mm_storeu_si128((__m128i*)(void*)d, x); + + s += 4 * 3; + d += 4 * 4; + n -= 4; + } + + while (n >= 1) { + uint8_t b0 = s[0]; + uint8_t b1 = s[1]; + uint8_t b2 = s[2]; + d[0] = b2; + d[1] = b1; + d[2] = b0; + d[3] = 0xFF; + + s += 1 * 3; + d += 1 * 4; + n -= 1; + } + + return len; +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len3 = src_len / 3; + size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t b0 = s[0]; + uint8_t b1 = s[1]; + uint8_t b2 = s[2]; + d[0] = b2; + d[1] = b1; + d[2] = b0; + d[3] = 0xFF; + + s += 1 * 3; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len4 = src_len / 4; + size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint8_t b0 = s[0]; + uint8_t b1 = s[1]; + uint8_t b2 = s[2]; + d[0] = b2; + d[1] = b1; + d[2] = b0; + d[3] = 0xFF; + + s += 1 * 4; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw_4x16le__bgr(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len3 = src_len / 3; + size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s0; + d[1] = s0; + d[2] = s1; + d[3] = s1; + d[4] = s2; + d[5] = s2; + d[6] = 0xFF; + d[7] = 0xFF; + + s += 1 * 3; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len2 = src_len / 2; + size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), + wuffs_base__color_u32__as__color_u64( + wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))))); + + s += 1 * 2; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len4 = src_len / 4; + size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s0; + d[1] = s0; + d[2] = s1; + d[3] = s1; + d[4] = s2; + d[5] = s2; + d[6] = 0xFF; + d[7] = 0xFF; + + s += 1 * 4; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__bgrw_4x16le__rgb(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len3 = src_len / 3; + size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + uint8_t s2 = s[2]; + d[0] = s2; + d[1] = s2; + d[2] = s1; + d[3] = s1; + d[4] = s0; + d[5] = s0; + d[6] = 0xFF; + d[7] = 0xFF; + + s += 1 * 3; + d += 1 * 8; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len2 = src_len / 2; + size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u24le__no_bounds_check( + d + (0 * 3), + wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))))); + + s += 1 * 2; + d += 1 * 3; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + + size_t n = len; + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len8 = src_len / 8; + size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint64_t d0 = wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); + uint64_t s0 = wuffs_base__swap_u64_argb_abgr( + wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__color_u64__as__color_u32( + wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0))); + + s += 1 * 8; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__rgbw__bgr_565(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len2 = src_len / 2; + size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), + wuffs_base__swap_u32_argb_abgr( + wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( + wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))))); + + s += 1 * 2; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len3 = dst_len / 3; + size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + const size_t loop_unroll_count = 4; + + // The comparison in the while condition is ">", not ">=", because with + // ">=", the last 4-byte store could write past the end of the dst slice. + // + // Each 4-byte store writes one too many bytes, but a subsequent store + // will overwrite that with the correct byte. There is always another + // store, whether a 4-byte store in this loop or a 1-byte store in the + // next loop. + while (n > loop_unroll_count) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[1] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[2] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[3] * 4))); + + s += loop_unroll_count * 1; + d += loop_unroll_count * 3; + n -= loop_unroll_count; + } + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + + s += 1 * 1; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len3 = dst_len / 3; + size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint32_t d0 = + wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000; + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + wuffs_base__poke_u24le__no_bounds_check( + d + (0 * 3), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); + + s += 1 * 1; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len3 = dst_len / 3; + size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + const size_t loop_unroll_count = 4; + + while (n >= loop_unroll_count) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + } + uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[1] * 4)); + if (s1) { + wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1); + } + uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[2] * 4)); + if (s2) { + wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2); + } + uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[3] * 4)); + if (s3) { + wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3); + } + + s += loop_unroll_count * 1; + d += loop_unroll_count * 3; + n -= loop_unroll_count; + } + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); + } + + s += 1 * 1; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len4 = src_len / 4; + size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + wuffs_base__poke_u24le__no_bounds_check( + d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); + + s += 1 * 4; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint8_t s0 = s[0]; + d[0] = s0; + d[1] = s0; + d[2] = s0; + + s += 1 * 1; + d += 1 * 3; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len3 = dst_len / 3; + size_t src_len2 = src_len / 2; + size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + // TODO: unroll. + + while (n >= 1) { + uint8_t s0 = s[0]; + d[0] = s0; + d[1] = s0; + d[2] = s0; + + s += 1 * 2; + d += 1 * 3; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + const size_t loop_unroll_count = 4; + + while (n >= loop_unroll_count) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[1] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[2] * 4))); + wuffs_base__poke_u32le__no_bounds_check( + d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[3] * 4))); + + s += loop_unroll_count * 1; + d += loop_unroll_count * 4; + n -= loop_unroll_count; + } + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4))); + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + const size_t loop_unroll_count = 4; + + while (n >= loop_unroll_count) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0); + } + uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[1] * 4)); + if (s1) { + wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1); + } + uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[2] * 4)); + if (s2) { + wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2); + } + uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[3] * 4)); + if (s3) { + wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3); + } + + s += loop_unroll_count * 1; + d += loop_unroll_count * 4; + n -= loop_unroll_count; + } + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0); + } + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03, // + +0x02, +0x02, +0x02, +0x02, // + +0x01, +0x01, +0x01, +0x01, // + +0x00, +0x00, +0x00, +0x00); + __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00, // + -0x01, +0x00, +0x00, +0x00); + + while (n >= 4) { + __m128i x; + x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s))); + x = _mm_shuffle_epi8(x, shuffle); + x = _mm_or_si128(x, or_ff); + _mm_storeu_si128((__m128i*)(void*)d, x); + + s += 4 * 1; + d += 4 * 4; + n -= 4; + } + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); + + s += 1 * 1; + d += 1 * 4; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len4 = dst_len / 4; + size_t src_len2 = src_len / 2; + size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + wuffs_base__poke_u32le__no_bounds_check( + d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); + + s += 1 * 2; + d += 1 * 4; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len8 = dst_len / 8; + size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), wuffs_base__color_u32__as__color_u64( + wuffs_base__peek_u32le__no_bounds_check( + dst_palette_ptr + ((size_t)s[0] * 4)))); + + s += 1 * 1; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + if (dst_palette_len != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return 0; + } + size_t dst_len8 = dst_len / 8; + size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + + ((size_t)s[0] * 4)); + if (s0) { + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0)); + } + + s += 1 * 1; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0])); + + s += 1 * 1; + d += 1 * 8; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__xxxxxxxx__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len8 = dst_len / 8; + size_t src_len2 = src_len / 2; + size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint64_t s0 = + ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2)))); + wuffs_base__poke_u64le__no_bounds_check( + d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0)); + + s += 1 * 2; + d += 1 * 8; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t src_len2 = src_len / 2; + size_t len = (dst_len < src_len2) ? dst_len : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + d[0] = s[0]; + + s += 1 * 2; + d += 1 * 1; + n -= 1; + } + + return len; +} + +static uint64_t // +wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + const uint8_t* src_ptr, + size_t src_len) { + size_t dst_len2 = dst_len / 2; + size_t src_len2 = src_len / 2; + size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; + uint8_t* d = dst_ptr; + const uint8_t* s = src_ptr; + size_t n = len; + + while (n >= 1) { + uint8_t s0 = s[0]; + uint8_t s1 = s[1]; + d[0] = s1; + d[1] = s0; + + s += 1 * 2; + d += 1 * 2; + n -= 1; + } + + return len; +} + +// -------- + +static uint64_t // +wuffs_base__pixel_swizzler__transparent_black_src( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + uint64_t num_pixels, + uint32_t dst_pixfmt_bytes_per_pixel) { + uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel; + if (n > num_pixels) { + n = num_pixels; + } + memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel))); + return n; +} + +static uint64_t // +wuffs_base__pixel_swizzler__transparent_black_src_over( + uint8_t* dst_ptr, + size_t dst_len, + uint8_t* dst_palette_ptr, + size_t dst_palette_len, + uint64_t num_pixels, + uint32_t dst_pixfmt_bytes_per_pixel) { + uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel; + if (n > num_pixels) { + n = num_pixels; + } + return n; +} + +// -------- + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__Y: + return wuffs_base__pixel_swizzler__copy_1_1; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__bgr_565__y; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__xxx__y; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__xxxx__y__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__xxxx__y; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE: + return wuffs_base__pixel_swizzler__xxxxxxxx__y; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__Y: + return wuffs_base__pixel_swizzler__y__y_16be; + + case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: + return wuffs_base__pixel_swizzler__y_16le__y_16be; + + case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: + return wuffs_base__pixel_swizzler__copy_2_2; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__bgr_565__y_16be; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__xxx__y_16be; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + return wuffs_base__pixel_swizzler__xxxx__y_16be; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE: + return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_1_1; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888( + dst_palette.ptr, dst_palette.len, src_palette.ptr, + src_palette.len, true) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__bgr_565__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxxxxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + // TODO. + break; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_1_1; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888( + dst_palette.ptr, dst_palette.len, src_palette.ptr, + src_palette.len, false) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: + if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != + WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxxxxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( + dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, + src_palette.len) != + (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { + return NULL; + } + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__xxxx__index__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over; + } + return NULL; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgr_565( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__copy_2_2; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + return wuffs_base__pixel_swizzler__bgr__bgr_565; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + return wuffs_base__pixel_swizzler__bgrw__bgr_565; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: + return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__rgb__bgr_565; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + return wuffs_base__pixel_swizzler__rgbw__bgr_565; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__bgr_565__bgr; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + return wuffs_base__pixel_swizzler__copy_3_3; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + return wuffs_base__pixel_swizzler__bgrw__bgr; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: + return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__swap_rgb_bgr; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__bgrw__rgb; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgra_nonpremul( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_4_4; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + // TODO. + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + // TODO. + break; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_8_8; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + // TODO. + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over; + } + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + // TODO. + break; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgra_premul( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_4_4; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over; + } + return NULL; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__bgr_565__bgrx; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + return wuffs_base__pixel_swizzler__xxx__xxxx; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + return wuffs_base__pixel_swizzler__bgrw__bgrx; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx; + + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + return wuffs_base__pixel_swizzler__copy_4_4; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__bgr__rgbx; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + return wuffs_base__pixel_swizzler__bgrw__rgbx; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + return wuffs_base__pixel_swizzler__bgr_565__rgb; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + return wuffs_base__pixel_swizzler__swap_rgb_bgr; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__bgrw__rgb; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + return wuffs_base__pixel_swizzler__copy_3_3; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + return wuffs_base__pixel_swizzler__bgrw__bgr; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__rgba_nonpremul( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + // TODO. + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_4_4; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + // TODO. + break; + } + return NULL; +} + +static wuffs_base__pixel_swizzler__func // +wuffs_base__pixel_swizzler__prepare__rgba_premul( + wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + switch (dst_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + if (wuffs_base__cpu_arch__have_x86_sse42()) { + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42; + } +#endif + return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgr__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over; + } + return NULL; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + return wuffs_base__pixel_swizzler__copy_4_4; + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over; + } + return NULL; + } + return NULL; +} + +// -------- + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_format dst_pixfmt, + wuffs_base__slice_u8 dst_palette, + wuffs_base__pixel_format src_pixfmt, + wuffs_base__slice_u8 src_palette, + wuffs_base__pixel_blend blend) { + if (!p) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + p->private_impl.func = NULL; + p->private_impl.transparent_black_func = NULL; + p->private_impl.dst_pixfmt_bytes_per_pixel = 0; + p->private_impl.src_pixfmt_bytes_per_pixel = 0; + + wuffs_base__pixel_swizzler__func func = NULL; + wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func = + NULL; + + uint32_t dst_pixfmt_bits_per_pixel = + wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt); + if ((dst_pixfmt_bits_per_pixel == 0) || + ((dst_pixfmt_bits_per_pixel & 7) != 0)) { + return wuffs_base__make_status( + wuffs_base__error__unsupported_pixel_swizzler_option); + } + + uint32_t src_pixfmt_bits_per_pixel = + wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt); + if ((src_pixfmt_bits_per_pixel == 0) || + ((src_pixfmt_bits_per_pixel & 7) != 0)) { + return wuffs_base__make_status( + wuffs_base__error__unsupported_pixel_swizzler_option); + } + + // TODO: support many more formats. + + switch (blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + transparent_black_func = + wuffs_base__pixel_swizzler__transparent_black_src; + break; + + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + transparent_black_func = + wuffs_base__pixel_swizzler__transparent_black_src_over; + break; + } + + switch (src_pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__Y: + func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette, + src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: + func = wuffs_base__pixel_swizzler__prepare__y_16be( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: + func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + func = wuffs_base__pixel_swizzler__prepare__bgr_565( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGR: + func = wuffs_base__pixel_swizzler__prepare__bgr( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + func = wuffs_base__pixel_swizzler__prepare__bgra_premul( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + func = wuffs_base__pixel_swizzler__prepare__bgrx( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGB: + func = wuffs_base__pixel_swizzler__prepare__rgb( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + func = wuffs_base__pixel_swizzler__prepare__rgba_premul( + p, dst_pixfmt, dst_palette, src_palette, blend); + break; + } + + p->private_impl.func = func; + p->private_impl.transparent_black_func = transparent_black_func; + p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8; + p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8; + return wuffs_base__make_status( + func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option); +} + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( + const wuffs_base__pixel_swizzler* p, + uint32_t up_to_num_pixels, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + const uint8_t** ptr_iop_r, + const uint8_t* io2_r) { + if (p && p->private_impl.func) { + const uint8_t* iop_r = *ptr_iop_r; + uint64_t src_len = wuffs_base__u64__min( + ((uint64_t)up_to_num_pixels) * + ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel), + ((uint64_t)(io2_r - iop_r))); + uint64_t n = + (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, + dst_palette.len, iop_r, (size_t)src_len); + *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel; + return n; + } + return 0; +} + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + const uint8_t** ptr_iop_r, + const uint8_t* io2_r) { + if (p && p->private_impl.func) { + const uint8_t* iop_r = *ptr_iop_r; + uint64_t src_len = ((uint64_t)(io2_r - iop_r)); + uint64_t n = + (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, + dst_palette.len, iop_r, (size_t)src_len); + *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel; + return n; + } + return 0; +} + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + wuffs_base__slice_u8 src) { + if (p && p->private_impl.func) { + return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, + dst_palette.len, src.ptr, src.len); + } + return 0; +} + +WUFFS_BASE__MAYBE_STATIC uint64_t // +wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black( + const wuffs_base__pixel_swizzler* p, + wuffs_base__slice_u8 dst, + wuffs_base__slice_u8 dst_palette, + uint64_t num_pixels) { + if (p && p->private_impl.transparent_black_func) { + return (*p->private_impl.transparent_black_func)( + dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels, + p->private_impl.dst_pixfmt_bytes_per_pixel); + } + return 0; +} + +// -------- + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2); + +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2); + +#if defined(__GNUC__) && !defined(__clang__) +// No-op. +#else +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column, + bool last_column); +#endif +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) + +// -------- + +static inline uint32_t // +wuffs_base__u32__max_of_4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) { + return wuffs_base__u32__max( // + wuffs_base__u32__max(a, b), // + wuffs_base__u32__max(c, d)); +} + +static inline uint32_t // +wuffs_base__u32__min_of_5(uint32_t a, + uint32_t b, + uint32_t c, + uint32_t d, + uint32_t e) { + return wuffs_base__u32__min( // + wuffs_base__u32__min( // + wuffs_base__u32__min(a, b), // + wuffs_base__u32__min(c, d)), // + e); +} + +// -------- + +typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func)( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2, + const uint8_t* up3); + +static void // +wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2, + const uint8_t* up3) { + for (; x < x_end; x++) { + // It's called CMYK but, but for Adobe CMYK JPEG images in practice, it's + // RGBW: 0xFFu means no ink instead of full ink. Note that a double + // inversion is a no-op, so inversions might be implicit in the code below. + uint32_t r = ((uint32_t)(*up0++)); + uint32_t g = ((uint32_t)(*up1++)); + uint32_t b = ((uint32_t)(*up2++)); + uint32_t w = ((uint32_t)(*up3++)); + r = ((r * w) + 0x7Fu) / 0xFFu; + g = ((g * w) + 0x7Fu) / 0xFFu; + b = ((b * w) + 0x7Fu) / 0xFFu; + wuffs_base__pixel_buffer__set_color_u32_at( + dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u)); + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2, + const uint8_t* up3) { + for (; x < x_end; x++) { + // We invert once again: 0xFFu means no ink instead of full ink. + uint32_t color = // + wuffs_base__color_ycc__as__color_u32( // + *up0++, *up1++, *up2++); + uint32_t r = 0xFFu - (0xFFu & (color >> 16u)); + uint32_t g = 0xFFu - (0xFFu & (color >> 8u)); + uint32_t b = 0xFFu - (0xFFu & (color >> 0u)); + uint32_t w = ((uint32_t)(*up3++)); + r = ((r * w) + 0x7Fu) / 0xFFu; + g = ((g * w) + 0x7Fu) / 0xFFu; + b = ((b * w) + 0x7Fu) / 0xFFu; + wuffs_base__pixel_buffer__set_color_u32_at( + dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u)); + } +} + +// -------- + +typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func)( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2); + +static void // +wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + for (; x < x_end; x++) { + uint32_t color = 0xFF000000u | // + (((uint32_t)(*up0++)) << 16u) | // + (((uint32_t)(*up1++)) << 8u) | // + (((uint32_t)(*up2++)) << 0u); + wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color); + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + for (; x < x_end; x++) { + uint32_t color = // + wuffs_base__color_ycc__as__color_u32( // + *up0++, *up1++, *up2++); + wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color); + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + size_t dst_stride = dst->private_impl.planes[0].stride; + uint8_t* dst_iter = dst->private_impl.planes[0].ptr + + (dst_stride * ((size_t)y)) + (4u * ((size_t)x)); + + for (; x < x_end; x++) { + uint32_t color = // + wuffs_base__color_ycc__as__color_u32( // + *up0++, *up1++, *up2++); + wuffs_base__poke_u32le__no_bounds_check(dst_iter, color); + dst_iter += 4u; + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + size_t dst_stride = dst->private_impl.planes[0].stride; + uint8_t* dst_iter = dst->private_impl.planes[0].ptr + + (dst_stride * ((size_t)y)) + (4u * ((size_t)x)); + + for (; x < x_end; x++) { + uint32_t color = // + wuffs_base__color_ycc__as__color_u32_abgr( // + *up0++, *up1++, *up2++); + wuffs_base__poke_u32le__no_bounds_check(dst_iter, color); + dst_iter += 4u; + } +} + +// -------- + +// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upsamples to a +// destination slice at least 480 (YCCK) or 672 (YCC) bytes long and whose +// src_len (multiplied by 1, 2, 3 or 4) is positive but no more than that. This +// 480 or 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice +// length. Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048. +// +// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks +// wide and each block is 8 pixels wide. We have: +// 480 = 1 * 8 * 60, 672 = 1 * 8 * 84 +// 480 = 2 * 8 * 30, 672 = 2 * 8 * 42 +// 480 = 3 * 8 * 20, 672 = 3 * 8 * 28 +// 480 = 4 * 8 * 15, 672 = 4 * 8 * 21 +// +// Box filters are equivalent to nearest neighbor upsampling. These ignore the +// src_ptr_minor, h1v2_bias, first_column and last_column arguments. +// +// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2 +// dimensions), which is higher quality (less blocky) but also higher +// computational effort. +// +// In theory, we could use triangle filters for any (inv_h, inv_v) combination. +// In practice, matching libjpeg-turbo, we only implement it for the common +// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an +// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2). +typedef const uint8_t* ( + *wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func)( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, // Nearest row. + const uint8_t* src_ptr_minor, // Adjacent row, alternating above or below. + size_t src_len, + uint32_t h1v2_bias, + bool first_column, + bool last_column); + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor_ignored, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column_ignored, + bool last_column_ignored) { + return src_ptr_major; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor_ignored, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column_ignored, + bool last_column_ignored) { + uint8_t* dp = dst_ptr; + const uint8_t* sp = src_ptr_major; + while (src_len--) { + uint8_t sv = *sp++; + *dp++ = sv; + *dp++ = sv; + } + return dst_ptr; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor_ignored, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column_ignored, + bool last_column_ignored) { + uint8_t* dp = dst_ptr; + const uint8_t* sp = src_ptr_major; + while (src_len--) { + uint8_t sv = *sp++; + *dp++ = sv; + *dp++ = sv; + *dp++ = sv; + } + return dst_ptr; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor_ignored, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column_ignored, + bool last_column_ignored) { + uint8_t* dp = dst_ptr; + const uint8_t* sp = src_ptr_major; + while (src_len--) { + uint8_t sv = *sp++; + *dp++ = sv; + *dp++ = sv; + *dp++ = sv; + *dp++ = sv; + } + return dst_ptr; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor, + size_t src_len, + uint32_t h1v2_bias, + bool first_column, + bool last_column) { + uint8_t* dp = dst_ptr; + const uint8_t* sp_major = src_ptr_major; + const uint8_t* sp_minor = src_ptr_minor; + while (src_len--) { + *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) + // + (1u * ((uint32_t)(*sp_minor++))) + // + h1v2_bias) >> + 2u); + } + return dst_ptr; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column, + bool last_column) { + uint8_t* dp = dst_ptr; + const uint8_t* sp = src_ptr_major; + + if (first_column) { + src_len--; + if ((src_len <= 0u) && last_column) { + uint8_t sv = *sp++; + *dp++ = sv; + *dp++ = sv; + return dst_ptr; + } + uint32_t svp1 = sp[+1]; + uint8_t sv = *sp++; + *dp++ = sv; + *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u); + if (src_len <= 0u) { + return dst_ptr; + } + } + + if (last_column) { + src_len--; + } + + for (; src_len > 0u; src_len--) { + uint32_t svm1 = sp[-1]; + uint32_t svp1 = sp[+1]; + uint32_t sv3 = 3u * (uint32_t)(*sp++); + *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u); + *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u); + } + + if (last_column) { + uint32_t svm1 = sp[-1]; + uint8_t sv = *sp++; + *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u); + *dp++ = sv; + } + + return dst_ptr; +} + +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column, + bool last_column) { + uint8_t* dp = dst_ptr; + const uint8_t* sp_major = src_ptr_major; + const uint8_t* sp_minor = src_ptr_minor; + + if (first_column) { + src_len--; + if ((src_len <= 0u) && last_column) { + uint32_t sv = (12u * ((uint32_t)(*sp_major++))) + // + (4u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + 8u) >> 4u); + *dp++ = (uint8_t)((sv + 7u) >> 4u); + return dst_ptr; + } + + uint32_t sv_major_m1 = sp_major[-0]; // Clamp offset to zero. + uint32_t sv_minor_m1 = sp_minor[-0]; // Clamp offset to zero. + uint32_t sv_major_p1 = sp_major[+1]; + uint32_t sv_minor_p1 = sp_minor[+1]; + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + if (src_len <= 0u) { + return dst_ptr; + } + } + + if (last_column) { + src_len--; + } + + for (; src_len > 0u; src_len--) { + uint32_t sv_major_m1 = sp_major[-1]; + uint32_t sv_minor_m1 = sp_minor[-1]; + uint32_t sv_major_p1 = sp_major[+1]; + uint32_t sv_minor_p1 = sp_minor[+1]; + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + } + + if (last_column) { + uint32_t sv_major_m1 = sp_major[-1]; + uint32_t sv_minor_m1 = sp_minor[-1]; + uint32_t sv_major_p1 = sp_major[+0]; // Clamp offset to zero. + uint32_t sv_minor_p1 = sp_minor[+0]; // Clamp offset to zero. + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + } + + return dst_ptr; +} + +// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs is indexed by inv_h +// and then inv_v. +static const wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs[4][4] = { + { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, + }, + { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, + }, + { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, + }, + { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, + }, +}; + +static inline uint32_t // +wuffs_base__pixel_swizzler__has_triangle_upsampler(uint32_t inv_h, + uint32_t inv_v) { + if (inv_h == 1u) { + return inv_v == 2u; + } else if (inv_h == 2u) { + return (inv_v == 1u) || (inv_v == 2u); + } + return false; +} + +// -------- + +// All of the wuffs_base__pixel_swizzler__swizzle_ycc__etc functions have +// preconditions. See all of the checks made in +// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For +// example, (width > 0) is a precondition, but there are many more. + +static void // +wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row( + wuffs_base__pixel_buffer* dst, + uint32_t width, + uint32_t y, + const uint8_t* src_ptr0, + const uint8_t* src_ptr1, + const uint8_t* src_ptr2, + const uint8_t* src_ptr3, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t stride3, + uint32_t inv_h0, + uint32_t inv_h1, + uint32_t inv_h2, + uint32_t inv_h3, + uint32_t inv_v0, + uint32_t inv_v1, + uint32_t inv_v2, + uint32_t inv_v3, + uint32_t half_width_for_2to1, + uint32_t h1v2_bias, + uint8_t* scratch_buffer_2k_ptr, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3, + wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) { + const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0); + const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1); + const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2); + const uint8_t* src3 = src_ptr3 + ((y / inv_v3) * (size_t)stride3); + uint32_t total_src_len0 = 0u; + uint32_t total_src_len1 = 0u; + uint32_t total_src_len2 = 0u; + uint32_t total_src_len3 = 0u; + + uint32_t x = 0u; + while (x < width) { + bool first_column = x == 0u; + uint32_t end = x + 480u; + if (end > width) { + end = width; + } + + uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; + uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; + uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; + uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3; + total_src_len0 += src_len0; + total_src_len1 += src_len1; + total_src_len2 += src_len2; + total_src_len3 += src_len3; + + const uint8_t* src_ptr_x0 = src0 + (x / inv_h0); + const uint8_t* up0 = (*upfunc0)( // + scratch_buffer_2k_ptr + (0u * 480u), // + src_ptr_x0, // + src_ptr_x0, // + src_len0, // + h1v2_bias, // + first_column, // + (total_src_len0 >= half_width_for_2to1)); + + const uint8_t* src_ptr_x1 = src1 + (x / inv_h1); + const uint8_t* up1 = (*upfunc1)( // + scratch_buffer_2k_ptr + (1u * 480u), // + src_ptr_x1, // + src_ptr_x1, // + src_len1, // + h1v2_bias, // + first_column, // + (total_src_len1 >= half_width_for_2to1)); + + const uint8_t* src_ptr_x2 = src2 + (x / inv_h2); + const uint8_t* up2 = (*upfunc2)( // + scratch_buffer_2k_ptr + (2u * 480u), // + src_ptr_x2, // + src_ptr_x2, // + src_len2, // + h1v2_bias, // + first_column, // + (total_src_len2 >= half_width_for_2to1)); + + const uint8_t* src_ptr_x3 = src3 + (x / inv_h3); + const uint8_t* up3 = (*upfunc3)( // + scratch_buffer_2k_ptr + (3u * 480u), // + src_ptr_x3, // + src_ptr_x3, // + src_len3, // + h1v2_bias, // + first_column, // + (total_src_len3 >= half_width_for_2to1)); + + (*conv4func)(dst, x, end, y, up0, up1, up2, up3); + x = end; + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter( + wuffs_base__pixel_buffer* dst, + uint32_t width, + uint32_t height, + const uint8_t* src_ptr0, + const uint8_t* src_ptr1, + const uint8_t* src_ptr2, + const uint8_t* src_ptr3, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t stride3, + uint32_t inv_h0, + uint32_t inv_h1, + uint32_t inv_h2, + uint32_t inv_h3, + uint32_t inv_v0, + uint32_t inv_v1, + uint32_t inv_v2, + uint32_t inv_v3, + uint32_t half_width_for_2to1, + uint32_t half_height_for_2to1, + uint8_t* scratch_buffer_2k_ptr, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4], + wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 = + (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 = + (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 = + (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3 = + (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u]; + + // First row. + uint32_t h1v2_bias = 1u; + wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row( + dst, width, 0u, // + src_ptr0, src_ptr1, src_ptr2, src_ptr3, // + stride0, stride1, stride2, stride3, // + inv_h0, inv_h1, inv_h2, inv_h3, // + inv_v0, inv_v1, inv_v2, inv_v3, // + half_width_for_2to1, // + h1v2_bias, // + scratch_buffer_2k_ptr, // + upfunc0, upfunc1, upfunc2, upfunc3, conv4func); + h1v2_bias = 2u; + + // Middle rows. + bool last_row = height == 2u * half_height_for_2to1; + uint32_t y_max_excl = last_row ? (height - 1u) : height; + uint32_t y; + for (y = 1u; y < y_max_excl; y++) { + const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0); + const uint8_t* src0_minor = + (inv_v0 != 2u) + ? src0_major + : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0)); + const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1); + const uint8_t* src1_minor = + (inv_v1 != 2u) + ? src1_major + : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1)); + const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2); + const uint8_t* src2_minor = + (inv_v2 != 2u) + ? src2_major + : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2)); + const uint8_t* src3_major = src_ptr3 + ((y / inv_v3) * (size_t)stride3); + const uint8_t* src3_minor = + (inv_v3 != 2u) + ? src3_major + : ((y & 1u) ? (src3_major + stride3) : (src3_major - stride3)); + uint32_t total_src_len0 = 0u; + uint32_t total_src_len1 = 0u; + uint32_t total_src_len2 = 0u; + uint32_t total_src_len3 = 0u; + + uint32_t x = 0u; + while (x < width) { + bool first_column = x == 0u; + uint32_t end = x + 480u; + if (end > width) { + end = width; + } + + uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; + uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; + uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; + uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3; + total_src_len0 += src_len0; + total_src_len1 += src_len1; + total_src_len2 += src_len2; + total_src_len3 += src_len3; + + const uint8_t* up0 = (*upfunc0)( // + scratch_buffer_2k_ptr + (0u * 480u), // + src0_major + (x / inv_h0), // + src0_minor + (x / inv_h0), // + src_len0, // + h1v2_bias, // + first_column, // + (total_src_len0 >= half_width_for_2to1)); + + const uint8_t* up1 = (*upfunc1)( // + scratch_buffer_2k_ptr + (1u * 480u), // + src1_major + (x / inv_h1), // + src1_minor + (x / inv_h1), // + src_len1, // + h1v2_bias, // + first_column, // + (total_src_len1 >= half_width_for_2to1)); + + const uint8_t* up2 = (*upfunc2)( // + scratch_buffer_2k_ptr + (2u * 480u), // + src2_major + (x / inv_h2), // + src2_minor + (x / inv_h2), // + src_len2, // + h1v2_bias, // + first_column, // + (total_src_len2 >= half_width_for_2to1)); + + const uint8_t* up3 = (*upfunc3)( // + scratch_buffer_2k_ptr + (3u * 480u), // + src3_major + (x / inv_h3), // + src3_minor + (x / inv_h3), // + src_len3, // + h1v2_bias, // + first_column, // + (total_src_len3 >= half_width_for_2to1)); + + (*conv4func)(dst, x, end, y, up0, up1, up2, up3); + x = end; + } + + h1v2_bias ^= 3u; + } + + // Last row. + if (y_max_excl != height) { + wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row( + dst, width, height - 1u, // + src_ptr0, src_ptr1, src_ptr2, src_ptr3, // + stride0, stride1, stride2, stride3, // + inv_h0, inv_h1, inv_h2, inv_h3, // + inv_v0, inv_v1, inv_v2, inv_v3, // + half_width_for_2to1, // + h1v2_bias, // + scratch_buffer_2k_ptr, // + upfunc0, upfunc1, upfunc2, upfunc3, conv4func); + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( + wuffs_base__pixel_buffer* dst, + uint32_t width, + uint32_t y, + const uint8_t* src_ptr0, + const uint8_t* src_ptr1, + const uint8_t* src_ptr2, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t inv_h0, + uint32_t inv_h1, + uint32_t inv_h2, + uint32_t inv_v0, + uint32_t inv_v1, + uint32_t inv_v2, + uint32_t half_width_for_2to1, + uint32_t h1v2_bias, + uint8_t* scratch_buffer_2k_ptr, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2, + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) { + const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0); + const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1); + const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2); + uint32_t total_src_len0 = 0u; + uint32_t total_src_len1 = 0u; + uint32_t total_src_len2 = 0u; + + uint32_t x = 0u; + while (x < width) { + bool first_column = x == 0u; + uint32_t end = x + 672u; + if (end > width) { + end = width; + } + + uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; + uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; + uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; + total_src_len0 += src_len0; + total_src_len1 += src_len1; + total_src_len2 += src_len2; + + const uint8_t* src_ptr_x0 = src0 + (x / inv_h0); + const uint8_t* up0 = (*upfunc0)( // + scratch_buffer_2k_ptr + (0u * 672u), // + src_ptr_x0, // + src_ptr_x0, // + src_len0, // + h1v2_bias, // + first_column, // + (total_src_len0 >= half_width_for_2to1)); + + const uint8_t* src_ptr_x1 = src1 + (x / inv_h1); + const uint8_t* up1 = (*upfunc1)( // + scratch_buffer_2k_ptr + (1u * 672u), // + src_ptr_x1, // + src_ptr_x1, // + src_len1, // + h1v2_bias, // + first_column, // + (total_src_len1 >= half_width_for_2to1)); + + const uint8_t* src_ptr_x2 = src2 + (x / inv_h2); + const uint8_t* up2 = (*upfunc2)( // + scratch_buffer_2k_ptr + (2u * 672u), // + src_ptr_x2, // + src_ptr_x2, // + src_len2, // + h1v2_bias, // + first_column, // + (total_src_len2 >= half_width_for_2to1)); + + (*conv3func)(dst, x, end, y, up0, up1, up2); + x = end; + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter( + wuffs_base__pixel_buffer* dst, + uint32_t width, + uint32_t height, + const uint8_t* src_ptr0, + const uint8_t* src_ptr1, + const uint8_t* src_ptr2, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t inv_h0, + uint32_t inv_h1, + uint32_t inv_h2, + uint32_t inv_v0, + uint32_t inv_v1, + uint32_t inv_v2, + uint32_t half_width_for_2to1, + uint32_t half_height_for_2to1, + uint8_t* scratch_buffer_2k_ptr, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4], + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 = + (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 = + (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 = + (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u]; + + // First row. + uint32_t h1v2_bias = 1u; + wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( + dst, width, 0u, // + src_ptr0, src_ptr1, src_ptr2, // + stride0, stride1, stride2, // + inv_h0, inv_h1, inv_h2, // + inv_v0, inv_v1, inv_v2, // + half_width_for_2to1, // + h1v2_bias, // + scratch_buffer_2k_ptr, // + upfunc0, upfunc1, upfunc2, conv3func); + h1v2_bias = 2u; + + // Middle rows. + bool last_row = height == 2u * half_height_for_2to1; + uint32_t y_max_excl = last_row ? (height - 1u) : height; + uint32_t y; + for (y = 1u; y < y_max_excl; y++) { + const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0); + const uint8_t* src0_minor = + (inv_v0 != 2u) + ? src0_major + : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0)); + const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1); + const uint8_t* src1_minor = + (inv_v1 != 2u) + ? src1_major + : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1)); + const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2); + const uint8_t* src2_minor = + (inv_v2 != 2u) + ? src2_major + : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2)); + uint32_t total_src_len0 = 0u; + uint32_t total_src_len1 = 0u; + uint32_t total_src_len2 = 0u; + + uint32_t x = 0u; + while (x < width) { + bool first_column = x == 0u; + uint32_t end = x + 672u; + if (end > width) { + end = width; + } + + uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; + uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; + uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; + total_src_len0 += src_len0; + total_src_len1 += src_len1; + total_src_len2 += src_len2; + + const uint8_t* up0 = (*upfunc0)( // + scratch_buffer_2k_ptr + (0u * 672u), // + src0_major + (x / inv_h0), // + src0_minor + (x / inv_h0), // + src_len0, // + h1v2_bias, // + first_column, // + (total_src_len0 >= half_width_for_2to1)); + + const uint8_t* up1 = (*upfunc1)( // + scratch_buffer_2k_ptr + (1u * 672u), // + src1_major + (x / inv_h1), // + src1_minor + (x / inv_h1), // + src_len1, // + h1v2_bias, // + first_column, // + (total_src_len1 >= half_width_for_2to1)); + + const uint8_t* up2 = (*upfunc2)( // + scratch_buffer_2k_ptr + (2u * 672u), // + src2_major + (x / inv_h2), // + src2_minor + (x / inv_h2), // + src_len2, // + h1v2_bias, // + first_column, // + (total_src_len2 >= half_width_for_2to1)); + + (*conv3func)(dst, x, end, y, up0, up1, up2); + x = end; + } + + h1v2_bias ^= 3u; + } + + // Last row. + if (y_max_excl != height) { + wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( + dst, width, height - 1u, // + src_ptr0, src_ptr1, src_ptr2, // + stride0, stride1, stride2, // + inv_h0, inv_h1, inv_h2, // + inv_v0, inv_v1, inv_v2, // + half_width_for_2to1, // + h1v2_bias, // + scratch_buffer_2k_ptr, // + upfunc0, upfunc1, upfunc2, conv3func); + } +} + +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter( + wuffs_base__pixel_buffer* dst, + uint32_t width, + uint32_t height, + const uint8_t* src_ptr0, + const uint8_t* src_ptr1, + const uint8_t* src_ptr2, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t inv_h0, + uint32_t inv_h1, + uint32_t inv_h2, + uint32_t inv_v0, + uint32_t inv_v1, + uint32_t inv_v2, + uint32_t half_width_for_2to1, + uint32_t half_height_for_2to1, + uint8_t* scratch_buffer_2k_ptr, + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4], + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) { + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 = + (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 = + (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u]; + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 = + (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u]; + + uint32_t y; + for (y = 0u; y < height; y++) { + const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0); + const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1); + const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2); + + uint32_t x = 0u; + while (x < width) { + uint32_t end = x + 672u; + if (end > width) { + end = width; + } + + uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; + uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; + uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; + + const uint8_t* up0 = (*upfunc0)( // + scratch_buffer_2k_ptr + (0u * 672u), // + src0_major + (x / inv_h0), // + src0_major + (x / inv_h0), // + src_len0, // + 0u, false, false); + + const uint8_t* up1 = (*upfunc1)( // + scratch_buffer_2k_ptr + (1u * 672u), // + src1_major + (x / inv_h1), // + src1_major + (x / inv_h1), // + src_len1, // + 0u, false, false); + + const uint8_t* up2 = (*upfunc2)( // + scratch_buffer_2k_ptr + (2u * 672u), // + src2_major + (x / inv_h2), // + src2_major + (x / inv_h2), // + src_len2, // + 0u, false, false); + + (*conv3func)(dst, x, end, y, up0, up1, up2); + x = end; + } + } +} + +// -------- + +// wuffs_base__pixel_swizzler__flattened_length is like +// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and +// also accounts for subsampling. +static uint64_t // +wuffs_base__pixel_swizzler__flattened_length(uint32_t width, + uint32_t height, + uint32_t stride, + uint32_t inv_h, + uint32_t inv_v) { + uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h; + uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v; + if (scaled_height <= 0u) { + return 0u; + } + return ((scaled_height - 1u) * stride) + scaled_width; +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__status // +wuffs_base__pixel_swizzler__swizzle_ycck( + const wuffs_base__pixel_swizzler* p, + wuffs_base__pixel_buffer* dst, + wuffs_base__slice_u8 dst_palette, + uint32_t width, + uint32_t height, + wuffs_base__slice_u8 src0, + wuffs_base__slice_u8 src1, + wuffs_base__slice_u8 src2, + wuffs_base__slice_u8 src3, + uint32_t width0, + uint32_t width1, + uint32_t width2, + uint32_t width3, + uint32_t height0, + uint32_t height1, + uint32_t height2, + uint32_t height3, + uint32_t stride0, + uint32_t stride1, + uint32_t stride2, + uint32_t stride3, + uint8_t h0, + uint8_t h1, + uint8_t h2, + uint8_t h3, + uint8_t v0, + uint8_t v1, + uint8_t v2, + uint8_t v3, + bool is_rgb_or_cmyk, + bool triangle_filter_for_2to1, + wuffs_base__slice_u8 scratch_buffer_2k) { + if (!p) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } else if (!dst || (width > 0xFFFFu) || (height > 0xFFFFu) || // + (4u <= ((unsigned int)h0 - 1u)) || // + (4u <= ((unsigned int)h1 - 1u)) || // + (4u <= ((unsigned int)h2 - 1u)) || // + (4u <= ((unsigned int)v0 - 1u)) || // + (4u <= ((unsigned int)v1 - 1u)) || // + (4u <= ((unsigned int)v2 - 1u)) || // + (scratch_buffer_2k.len < 2048u)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((h3 != 0u) || (v3 != 0u)) { + if ((4u <= ((unsigned int)h3 - 1u)) || // + (4u <= ((unsigned int)v3 - 1u))) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + } + + uint32_t max_incl_h = wuffs_base__u32__max_of_4(h0, h1, h2, h3); + uint32_t max_incl_v = wuffs_base__u32__max_of_4(v0, v1, v2, v3); + + // Calculate the inverse h and v ratios. + // + // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and + // max_incl_h=2). In both cases, the inv_h value is 2. + uint32_t inv_h0 = max_incl_h / h0; + uint32_t inv_h1 = max_incl_h / h1; + uint32_t inv_h2 = max_incl_h / h2; + uint32_t inv_h3 = h3 ? (max_incl_h / h3) : 0u; + uint32_t inv_v0 = max_incl_v / v0; + uint32_t inv_v1 = max_incl_v / v1; + uint32_t inv_v2 = max_incl_v / v2; + uint32_t inv_v3 = v3 ? (max_incl_v / v3) : 0u; + + uint32_t half_width_for_2to1 = (width + 1u) / 2u; + uint32_t half_height_for_2to1 = (height + 1u) / 2u; + + width = wuffs_base__u32__min_of_5( // + width, // + width0 * inv_h0, // + width1 * inv_h1, // + width2 * inv_h2, // + wuffs_base__pixel_config__width(&dst->pixcfg)); + height = wuffs_base__u32__min_of_5( // + height, // + height0 * inv_v0, // + height1 * inv_v1, // + height2 * inv_v2, // + wuffs_base__pixel_config__height(&dst->pixcfg)); + + if (((h0 * inv_h0) != max_incl_h) || // + ((h1 * inv_h1) != max_incl_h) || // + ((h2 * inv_h2) != max_incl_h) || // + ((v0 * inv_v0) != max_incl_v) || // + ((v1 * inv_v1) != max_incl_v) || // + ((v2 * inv_v2) != max_incl_v) || // + (src0.len < wuffs_base__pixel_swizzler__flattened_length( + width, height, stride0, inv_h0, inv_v0)) || + (src1.len < wuffs_base__pixel_swizzler__flattened_length( + width, height, stride1, inv_h1, inv_v1)) || + (src2.len < wuffs_base__pixel_swizzler__flattened_length( + width, height, stride2, inv_h2, inv_v2))) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((h3 != 0u) || (v3 != 0u)) { + if (((h3 * inv_h3) != max_incl_h) || // + ((v3 * inv_v3) != max_incl_v) || // + (src3.len < wuffs_base__pixel_swizzler__flattened_length( + width, height, stride3, inv_h3, inv_v3))) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + } + + if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) { + // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO. + return wuffs_base__make_status( + wuffs_base__error__unsupported_pixel_swizzler_option); + } + + switch (dst->pixcfg.private_impl.pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__Y: + case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: + case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + case WUFFS_BASE__PIXEL_FORMAT__BGR: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: + case WUFFS_BASE__PIXEL_FORMAT__RGB: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: + break; + + default: + // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO. + return wuffs_base__make_status( + wuffs_base__error__unsupported_pixel_swizzler_option); + } + + if ((width <= 0u) || (height <= 0u)) { + return wuffs_base__make_status(NULL); + } + + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func = NULL; + + if (is_rgb_or_cmyk) { + conv3func = &wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general; + } else { + switch (dst->pixcfg.private_impl.pixfmt.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRX: +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) + if (wuffs_base__cpu_arch__have_x86_avx2()) { + conv3func = + &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2; + break; + } +#endif + conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx; + break; + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBX: +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) + if (wuffs_base__cpu_arch__have_x86_avx2()) { + conv3func = + &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2; + break; + } +#endif + conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx; + break; + default: + conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general; + break; + } + } + + void (*func)( + wuffs_base__pixel_buffer * dst, // + uint32_t width, // + uint32_t height, // + const uint8_t* src_ptr0, // + const uint8_t* src_ptr1, // + const uint8_t* src_ptr2, // + uint32_t stride0, // + uint32_t stride1, // + uint32_t stride2, // + uint32_t inv_h0, // + uint32_t inv_h1, // + uint32_t inv_h2, // + uint32_t inv_v0, // + uint32_t inv_v1, // + uint32_t inv_v2, // + uint32_t half_width_for_2to1, // + uint32_t half_height_for_2to1, // + uint8_t* scratch_buffer_2k_ptr, // + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func(*upfuncs)[4][4], + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) = + &wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter; + + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfuncs[4][4]; + memcpy(&upfuncs, &wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs, + sizeof upfuncs); + + if (triangle_filter_for_2to1 && + (wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h0, inv_v0) || + wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h1, inv_v1) || + wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h2, inv_v2))) { + func = &wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter; + + upfuncs[0][1] = + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle; + upfuncs[1][0] = + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle; + upfuncs[1][1] = + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle; + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +#if defined(__GNUC__) && !defined(__clang__) + // Don't use our AVX2 implementation for GCC (but do use it for clang). For + // some unknown reason, GCC performs noticably better on the non-SIMD + // version. Possibly because GCC's auto-vectorizer is smarter (just with + // SSE2, not AVX2) than our hand-written code, but that's just a guess. + // + // See commits 51bc60ef9298cb2efc1b29a9681191f66d49820d and + // cd769a0cdf1b5affee13f6089b995f3d39569cb4 for benchmark numbers. + // + // See also https://godbolt.org/z/MbhbPGEz4 for Debian Bullseye's clang 11 + // versus gcc 10, where only gcc auto-vectorizes, although later clang + // versions will also auto-vectorize. +#else + if (wuffs_base__cpu_arch__have_x86_avx2()) { + upfuncs[1][1] = + wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2; + } +#endif +#endif + } + + if ((h3 != 0u) || (v3 != 0u)) { + wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func = + is_rgb_or_cmyk + ? &wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general + : &wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general; + wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter( // + dst, width, height, // + src0.ptr, src1.ptr, src2.ptr, src3.ptr, // + stride0, stride1, stride2, stride3, // + inv_h0, inv_h1, inv_h2, inv_h3, // + inv_v0, inv_v1, inv_v2, inv_v3, // + half_width_for_2to1, half_height_for_2to1, // + scratch_buffer_2k.ptr, &upfuncs, conv4func); + + } else { + (*func)( // + dst, width, height, // + src0.ptr, src1.ptr, src2.ptr, // + stride0, stride1, stride2, // + inv_h0, inv_h1, inv_h2, // + inv_v0, inv_v1, inv_v2, // + half_width_for_2to1, half_height_for_2to1, // + scratch_buffer_2k.ptr, &upfuncs, conv3func); + } + + return wuffs_base__make_status(NULL); +} + +// -------- + +// ‼ WUFFS MULTI-FILE SECTION +x86_avx2 +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + if ((x + 32u) > x_end) { + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx( // + dst, x, x_end, y, up0, up1, up2); + return; + } + + size_t dst_stride = dst->private_impl.planes[0].stride; + uint8_t* dst_iter = dst->private_impl.planes[0].ptr + + (dst_stride * ((size_t)y)) + (4u * ((size_t)x)); + + // u0001 = u16x16 [0x0001 .. 0x0001] + // u00FF = u16x16 [0x00FF .. 0x00FF] + // uFF80 = u16x16 [0xFF80 .. 0xFF80] + // uFFFF = u16x16 [0xFFFF .. 0xFFFF] + const __m256i u0001 = _mm256_set1_epi16(+0x0001); + const __m256i u00FF = _mm256_set1_epi16(+0x00FF); + const __m256i uFF80 = _mm256_set1_epi16(-0x0080); + const __m256i uFFFF = _mm256_set1_epi16(-0x0001); + + // p8000_p0000 = u16x16 [0x8000 0x0000 .. 0x8000 0x0000] + const __m256i p8000_p0000 = _mm256_set_epi16( // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000); + + // Per wuffs_base__color_ycc__as__color_u32, the formulae: + // + // R = Y + 1.40200 * Cr + // G = Y - 0.34414 * Cb - 0.71414 * Cr + // B = Y + 1.77200 * Cb + // + // When scaled by 1<<16: + // + // 0.34414 becomes 0x0581A = 22554. + // 0.71414 becomes 0x0B6D2 = 46802. + // 1.40200 becomes 0x166E9 = 91881. + // 1.77200 becomes 0x1C5A2 = 116130. + // + // Separate the integer and fractional parts, since we work with signed + // 16-bit SIMD lanes. The fractional parts range from -0.5 .. +0.5 (as + // floating-point) which is from -0x8000 .. +0x8000 (as fixed-point). + // + // -0x3A5E = -0x20000 + 0x1C5A2 The B:Cb factor. + // +0x66E9 = -0x10000 + 0x166E9 The R:Cr factor. + // -0x581A = +0x00000 - 0x0581A The G:Cb factor. + // +0x492E = +0x10000 - 0x0B6D2 The G:Cr factor. + const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E); + const __m256i p66E9 = _mm256_set1_epi16(+0x66E9); + const __m256i m581A_p492E = _mm256_set_epi16( // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A); + + while (x < x_end) { + // Load chroma values in even and odd columns (the high 8 bits of each + // u16x16 element are zero) and then subtract 0x0080. + // + // cb_all = u8x32 [cb.00 cb.01 cb.02 cb.03 .. cb.1C cb.1D cb.1E cb.1F] + // cb_eve = i16x16 [cb.00-0x80 cb.02-0x80 .. cb.1C-0x80 cb.1E-0x80 ] + // cb_odd = i16x16 [cb.01-0x80 cb.03-0x80 .. cb.1D-0x80 cb.1F-0x80 ] + // + // Ditto for the cr_xxx Chroma-Red values. + __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1); + __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2); + __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF)); + __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF)); + __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8)); + __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8)); + + // ---- + + // Calculate: + // + // B-Y = (+1.77200 * Cb) as floating-point + // R-Y = (+1.40200 * Cr) as floating-point + // + // B-Y = ((0x2_0000 - 0x3A5E) * Cb) as fixed-point + // R-Y = ((0x1_0000 + 0x66E9) * Cr) as fixed-point + // + // B-Y = ((-0x3A5E * Cb) + ("2.0" * Cb)) + // R-Y = ((+0x66E9 * Cr) + ("1.0" * Cr)) + + // Multiply by m3A5E or p66E9, taking the high 16 bits. There's also a + // doubling (add x to itself), adding-of-1 and halving (shift right by 1). + // That makes multiply-and-take-high round to nearest (instead of down). + __m256i tmp_by_eve = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001), + 1); + __m256i tmp_by_odd = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001), + 1); + __m256i tmp_ry_eve = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001), + 1); + __m256i tmp_ry_odd = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001), + 1); + + // Add (2 * Cb) and (1 * Cr). + __m256i by_eve = + _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve)); + __m256i by_odd = + _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd)); + __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve); + __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd); + + // ---- + + // Calculate: + // + // G-Y = (-0.34414 * Cb) + + // (-0.71414 * Cr) as floating-point + // + // G-Y = ((+0x0_0000 - 0x581A) * Cb) + + // ((-0x1_0000 + 0x492E) * Cr) as fixed-point + // + // G-Y = (-0x581A * Cb) + + // (+0x492E * Cr) - ("1.0" * Cr) + + // Multiply-add to get ((-0x581A * Cb) + (+0x492E * Cr)). + __m256i tmp0_gy_eve_lo = _mm256_madd_epi16( // + _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E); + __m256i tmp0_gy_eve_hi = _mm256_madd_epi16( // + _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E); + __m256i tmp0_gy_odd_lo = _mm256_madd_epi16( // + _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E); + __m256i tmp0_gy_odd_hi = _mm256_madd_epi16( // + _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E); + + // Divide the i32x8 vectors by (1 << 16), rounding to nearest. + __m256i tmp1_gy_eve_lo = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16); + __m256i tmp1_gy_eve_hi = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16); + __m256i tmp1_gy_odd_lo = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16); + __m256i tmp1_gy_odd_hi = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16); + + // Pack the ((-0x581A * Cb) + (+0x492E * Cr)) as i16x16 and subtract Cr. + __m256i gy_eve = _mm256_sub_epi16( + _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve); + __m256i gy_odd = _mm256_sub_epi16( + _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd); + + // ---- + + // Add Y to (B-Y), (G-Y) and (R-Y) to produce B, G and R. + // + // For the resultant packed_x_xxx vectors, only elements 0 ..= 7 and 16 ..= + // 23 of the 32-element vectors matter (since we'll unpacklo but not + // unpackhi them). Let … denote 8 ignored consecutive u8 values and let % + // denote 0xFF. We'll end this section with: + // + // packed_b_eve = u8x32 [b00 b02 .. b0C b0E … b10 b12 .. b1C b1E …] + // packed_b_odd = u8x32 [b01 b03 .. b0D b0F … b11 b13 .. b1D b1F …] + // packed_g_eve = u8x32 [g00 g02 .. g0C g0E … g10 g12 .. g1C g1E …] + // packed_g_odd = u8x32 [g01 g03 .. g0D g0F … g11 g13 .. g1D g1F …] + // packed_r_eve = u8x32 [r00 r02 .. r0C r0E … r10 r12 .. r1C r1E …] + // packed_r_odd = u8x32 [r01 r03 .. r0D r0F … r11 r13 .. r1D r1F …] + // uFFFF = u8x32 [ % % .. % % … % % .. % % …] + + __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0); + __m256i yy_eve = _mm256_and_si256(yy_all, u00FF); + __m256i yy_odd = _mm256_srli_epi16(yy_all, 8); + + __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve); + __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd); + __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve); + __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd); + + __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve); + __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd); + __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve); + __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd); + + __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve); + __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd); + __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve); + __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd); + + // ---- + + // Mix those values (unpacking in 8, 16 and then 32 bit units) to get the + // desired BGRX/RGBX order. + // + // From here onwards, all of our __m256i registers are u8x32. + + // mix00 = [b00 g00 b02 g02 .. b0E g0E b10 g10 .. b1C g1C b1E g1E] + // mix01 = [b01 g01 b03 g03 .. b0F g0F b11 g11 .. b1D g1D b1F g1F] + // mix02 = [r00 % r02 % .. r0E % r10 % .. r1C % r1E %] + // mix03 = [r01 % r03 % .. r0F % r11 % .. r1D % r1F %] + // + // See also § below. + __m256i mix00 = _mm256_unpacklo_epi8(packed_b_eve, packed_g_eve); + __m256i mix01 = _mm256_unpacklo_epi8(packed_b_odd, packed_g_odd); + __m256i mix02 = _mm256_unpacklo_epi8(packed_r_eve, uFFFF); + __m256i mix03 = _mm256_unpacklo_epi8(packed_r_odd, uFFFF); + + // mix10 = [b00 g00 r00 % b02 g02 r02 % b04 g04 r04 % b06 g06 r06 % + // b10 g10 r10 % b12 g12 r12 % b14 g14 r14 % b16 g16 r16 %] + // mix11 = [b01 g01 r01 % b03 g03 r03 % b05 g05 r05 % b07 g07 r07 % + // b11 g11 r11 % b13 g13 r13 % b15 g15 r15 % b17 g17 r17 %] + // mix12 = [b08 g08 r08 % b0A g0A r0A % b0C g0C r0C % b0E g0E r0E % + // b18 g18 r18 % b1A g1A r1A % b1C g1C r1C % b1E g1E r1E %] + // mix13 = [b09 g09 r09 % b0B g0B r0B % b0D g0D r0D % b0F g0F r0F % + // b19 g19 r19 % b1B g1B r1B % b1D g1D r1D % b1F g1F r1F %] + __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02); + __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03); + __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02); + __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03); + + // mix20 = [b00 g00 r00 % b01 g01 r01 % b02 g02 r02 % b03 g03 r03 % + // b10 g10 r10 % b11 g11 r11 % b12 g12 r12 % b13 g13 r13 %] + // mix21 = [b04 g04 r04 % b05 g05 r05 % b06 g06 r06 % b07 g07 r07 % + // b14 g14 r14 % b15 g15 r15 % b16 g16 r16 % b17 g17 r17 %] + // mix22 = [b08 g08 r08 % b09 g09 r09 % b0A g0A r0A % b0B g0B r0B % + // b18 g18 r18 % b19 g19 r19 % b1A g1A r1A % b1B g1B r1B %] + // mix23 = [b0C g0C r0C % b0D g0D r0D % b0E g0E r0E % b0F g0F r0F % + // b1C g1C r1C % b1D g1D r1D % b1E g1E r1E % b1F g1F r1F %] + __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11); + __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11); + __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13); + __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13); + + // mix30 = [b00 g00 r00 % b01 g01 r01 % b02 g02 r02 % b03 g03 r03 % + // b04 g04 r04 % b05 g05 r05 % b06 g06 r06 % b07 g07 r07 %] + // mix31 = [b08 g08 r08 % b09 g09 r09 % b0A g0A r0A % b0B g0B r0B % + // b0C g0C r0C % b0D g0D r0D % b0E g0E r0E % b0F g0F r0F %] + // mix32 = [b10 g10 r10 % b11 g11 r11 % b12 g12 r12 % b13 g13 r13 % + // b14 g14 r14 % b15 g15 r15 % b16 g16 r16 % b17 g17 r17 %] + // mix33 = [b18 g18 r18 % b19 g19 r19 % b1A g1A r1A % b1B g1B r1B % + // b1C g1C r1C % b1D g1D r1D % b1E g1E r1E % b1F g1F r1F %] + __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20); + __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20); + __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31); + __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31); + + // Write out four u8x32 SIMD registers (128 bytes, 32 BGRX/RGBX pixels). + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33); + + // Advance by up to 32 pixels. The first iteration might be smaller than 32 + // so that all of the remaining steps are exactly 32. + uint32_t n = 32u - (31u & (x - x_end)); + dst_iter += 4u * n; + up0 += n; + up1 += n; + up2 += n; + x += n; + } +} + +// The rgbx flavor (below) is exactly the same as the bgrx flavor (above) +// except for the lines marked with a § and that comments were stripped. +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static void // +wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2( + wuffs_base__pixel_buffer* dst, + uint32_t x, + uint32_t x_end, + uint32_t y, + const uint8_t* up0, + const uint8_t* up1, + const uint8_t* up2) { + if ((x + 32u) > x_end) { + wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx( // + dst, x, x_end, y, up0, up1, up2); + return; + } + + size_t dst_stride = dst->private_impl.planes[0].stride; + uint8_t* dst_iter = dst->private_impl.planes[0].ptr + + (dst_stride * ((size_t)y)) + (4u * ((size_t)x)); + + const __m256i u0001 = _mm256_set1_epi16(+0x0001); + const __m256i u00FF = _mm256_set1_epi16(+0x00FF); + const __m256i uFF80 = _mm256_set1_epi16(-0x0080); + const __m256i uFFFF = _mm256_set1_epi16(-0x0001); + + const __m256i p8000_p0000 = _mm256_set_epi16( // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000, // + +0x0000, -0x8000, +0x0000, -0x8000); + + const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E); + const __m256i p66E9 = _mm256_set1_epi16(+0x66E9); + const __m256i m581A_p492E = _mm256_set_epi16( // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A, // + +0x492E, -0x581A, +0x492E, -0x581A); + + while (x < x_end) { + __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1); + __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2); + __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF)); + __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF)); + __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8)); + __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8)); + + __m256i tmp_by_eve = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001), + 1); + __m256i tmp_by_odd = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001), + 1); + __m256i tmp_ry_eve = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001), + 1); + __m256i tmp_ry_odd = _mm256_srai_epi16( + _mm256_add_epi16( + _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001), + 1); + + __m256i by_eve = + _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve)); + __m256i by_odd = + _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd)); + __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve); + __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd); + + __m256i tmp0_gy_eve_lo = _mm256_madd_epi16( // + _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E); + __m256i tmp0_gy_eve_hi = _mm256_madd_epi16( // + _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E); + __m256i tmp0_gy_odd_lo = _mm256_madd_epi16( // + _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E); + __m256i tmp0_gy_odd_hi = _mm256_madd_epi16( // + _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E); + + __m256i tmp1_gy_eve_lo = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16); + __m256i tmp1_gy_eve_hi = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16); + __m256i tmp1_gy_odd_lo = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16); + __m256i tmp1_gy_odd_hi = + _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16); + + __m256i gy_eve = _mm256_sub_epi16( + _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve); + __m256i gy_odd = _mm256_sub_epi16( + _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd); + + __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0); + __m256i yy_eve = _mm256_and_si256(yy_all, u00FF); + __m256i yy_odd = _mm256_srli_epi16(yy_all, 8); + + __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve); + __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd); + __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve); + __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd); + + __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve); + __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd); + __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve); + __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd); + + __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve); + __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd); + __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve); + __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd); + + // § Note the swapped B and R channels. + __m256i mix00 = _mm256_unpacklo_epi8(packed_r_eve, packed_g_eve); + __m256i mix01 = _mm256_unpacklo_epi8(packed_r_odd, packed_g_odd); + __m256i mix02 = _mm256_unpacklo_epi8(packed_b_eve, uFFFF); + __m256i mix03 = _mm256_unpacklo_epi8(packed_b_odd, uFFFF); + + __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02); + __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03); + __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02); + __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03); + + __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11); + __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11); + __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13); + __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13); + + __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20); + __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20); + __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31); + __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31); + + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32); + _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33); + + uint32_t n = 32u - (31u & (x - x_end)); + dst_iter += 4u * n; + up0 += n; + up1 += n; + up2 += n; + x += n; + } +} + +#if defined(__GNUC__) && !defined(__clang__) +// No-op. +#else +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +static const uint8_t* // +wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2( + uint8_t* dst_ptr, + const uint8_t* src_ptr_major, + const uint8_t* src_ptr_minor, + size_t src_len, + uint32_t h1v2_bias_ignored, + bool first_column, + bool last_column) { + uint8_t* dp = dst_ptr; + const uint8_t* sp_major = src_ptr_major; + const uint8_t* sp_minor = src_ptr_minor; + + if (first_column) { + src_len--; + if ((src_len <= 0u) && last_column) { + uint32_t sv = (12u * ((uint32_t)(*sp_major++))) + // + (4u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + 8u) >> 4u); + *dp++ = (uint8_t)((sv + 7u) >> 4u); + return dst_ptr; + } + + uint32_t sv_major_m1 = sp_major[-0]; // Clamp offset to zero. + uint32_t sv_minor_m1 = sp_minor[-0]; // Clamp offset to zero. + uint32_t sv_major_p1 = sp_major[+1]; + uint32_t sv_minor_p1 = sp_minor[+1]; + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + if (src_len <= 0u) { + return dst_ptr; + } + } + + if (last_column) { + src_len--; + } + + if (src_len < 32) { + // This fallback is the same as the non-SIMD-capable code path. + for (; src_len > 0u; src_len--) { + uint32_t sv_major_m1 = sp_major[-1]; + uint32_t sv_minor_m1 = sp_minor[-1]; + uint32_t sv_major_p1 = sp_major[+1]; + uint32_t sv_minor_p1 = sp_minor[+1]; + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + } + + } else { + while (src_len > 0u) { + // Load 1+32+1 samples (six u8x32 vectors) from the major (jxx) and minor + // (nxx) rows. + // + // major_p0 = [j00 j01 j02 j03 .. j28 j29 j30 j31] // p0 = "plus 0" + // minor_p0 = [n00 n01 n02 n03 .. n28 n29 n30 n31] // p0 = "plus 0" + // major_m1 = [jm1 j00 j01 j02 .. j27 j28 j29 j30] // m1 = "minus 1" + // minor_m1 = [nm1 n00 n01 n02 .. n27 n28 n29 n30] // m1 = "minus 1" + // major_p1 = [j01 j02 j03 j04 .. j29 j30 j31 j32] // p1 = "plus 1" + // minor_p1 = [n01 n02 n03 n04 .. n29 n30 n31 n32] // p1 = "plus 1" + __m256i major_p0 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 0)); + __m256i minor_p0 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 0)); + __m256i major_m1 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major - 1)); + __m256i minor_m1 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor - 1)); + __m256i major_p1 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 1)); + __m256i minor_p1 = + _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 1)); + + // Unpack, staying with u8x32 vectors. + // + // step1_p0_lo = [j00 n00 j01 n01 .. j07 n07 j16 n16 j17 n17 .. j23 n23] + // step1_p0_hi = [j08 n08 j09 n09 .. j15 n15 j24 n24 j25 n25 .. j31 n31] + // step1_m1_lo = [jm1 nm1 j00 n00 .. j06 n06 j15 n15 j16 n16 .. j22 n22] + // step1_m1_hi = [j07 n07 j08 n08 .. j14 n14 j23 n23 j24 n24 .. j30 n30] + // step1_p1_lo = [j01 n01 j02 n02 .. j08 n08 j17 n17 j18 n18 .. j24 n24] + // step1_p1_hi = [j09 n09 j10 n10 .. j16 n16 j25 n25 j26 n26 .. j32 n32] + __m256i step1_p0_lo = _mm256_unpacklo_epi8(major_p0, minor_p0); + __m256i step1_p0_hi = _mm256_unpackhi_epi8(major_p0, minor_p0); + __m256i step1_m1_lo = _mm256_unpacklo_epi8(major_m1, minor_m1); + __m256i step1_m1_hi = _mm256_unpackhi_epi8(major_m1, minor_m1); + __m256i step1_p1_lo = _mm256_unpacklo_epi8(major_p1, minor_p1); + __m256i step1_p1_hi = _mm256_unpackhi_epi8(major_p1, minor_p1); + + // Multiply-add to get u16x16 vectors. + // + // step2_p0_lo = [9*j00+3*n00 9*j01+3*n01 .. 9*j23+3*n23] + // step2_p0_hi = [9*j08+3*n08 9*j09+3*n09 .. 9*j31+3*n31] + // step2_m1_lo = [3*jm1+1*nm1 3*j00+1*n00 .. 3*j22+1*n22] + // step2_m1_hi = [3*j07+1*n07 3*j08+1*n08 .. 3*j30+1*n30] + // step2_p1_lo = [3*j01+1*n01 3*j02+1*n02 .. 3*j24+1*n24] + // step2_p1_hi = [3*j09+1*n09 3*j10+1*n10 .. 3*j32+1*n32] + const __m256i k0309 = _mm256_set1_epi16(0x0309); + const __m256i k0103 = _mm256_set1_epi16(0x0103); + __m256i step2_p0_lo = _mm256_maddubs_epi16(step1_p0_lo, k0309); + __m256i step2_p0_hi = _mm256_maddubs_epi16(step1_p0_hi, k0309); + __m256i step2_m1_lo = _mm256_maddubs_epi16(step1_m1_lo, k0103); + __m256i step2_m1_hi = _mm256_maddubs_epi16(step1_m1_hi, k0103); + __m256i step2_p1_lo = _mm256_maddubs_epi16(step1_p1_lo, k0103); + __m256i step2_p1_hi = _mm256_maddubs_epi16(step1_p1_hi, k0103); + + // Compute the weighted sums of (p0, m1) and (p0, p1). For example: + // + // step3_m1_lo[00] = ((9*j00) + (3*n00) + (3*jm1) + (1*nm1)) as u16 + // step3_p1_hi[15] = ((9*j31) + (3*n31) + (3*j32) + (1*n32)) as u16 + __m256i step3_m1_lo = _mm256_add_epi16(step2_p0_lo, step2_m1_lo); + __m256i step3_m1_hi = _mm256_add_epi16(step2_p0_hi, step2_m1_hi); + __m256i step3_p1_lo = _mm256_add_epi16(step2_p0_lo, step2_p1_lo); + __m256i step3_p1_hi = _mm256_add_epi16(step2_p0_hi, step2_p1_hi); + + // Bias by 8 (on the left) or 7 (on the right) and then divide by 16 + // (which is 9+3+3+1) to get a weighted average. On the left (m1), shift + // the u16 right value by 4. On the right (p1), shift right by 4 and then + // shift left by 8 so that, when still in the u16x16 little-endian + // interpretation, we have: + // - m1_element = (etcetera + 8) >> 4 + // - p1_element = ((etcetera + 7) >> 4) << 8 + // + // step4_m1_lo = [0x00?? 0x00?? ... 0x00?? 0x00??] + // step4_p1_lo = [0x??00 0x??00 ... 0x??00 0x??00] + // step4_m1_hi = [0x00?? 0x00?? ... 0x00?? 0x00??] + // step4_p1_hi = [0x??00 0x??00 ... 0x??00 0x??00] + __m256i step4_m1_lo = _mm256_srli_epi16( + _mm256_add_epi16(step3_m1_lo, _mm256_set1_epi16(8)), 4); + __m256i step4_p1_lo = _mm256_slli_epi16( + _mm256_srli_epi16(_mm256_add_epi16(step3_p1_lo, _mm256_set1_epi16(7)), + 4), + 8); + __m256i step4_m1_hi = _mm256_srli_epi16( + _mm256_add_epi16(step3_m1_hi, _mm256_set1_epi16(8)), 4); + __m256i step4_p1_hi = _mm256_slli_epi16( + _mm256_srli_epi16(_mm256_add_epi16(step3_p1_hi, _mm256_set1_epi16(7)), + 4), + 8); + + // Bitwise-or two "0x00"-rich u16x16 vectors to get a u8x32 vector. Do + // that twice. Once for the low columns and once for the high columns. + // + // In terms of jxx (major row) or nxx (minor row) source samples: + // - low columns means ( 0 .. 8; 16 .. 24). + // - high columns means ( 8 .. 16; 24 .. 32). + // + // In terms of dxx destination samples (there are twice as many): + // - low columns means ( 0 .. 16; 32 .. 48). + // - high columns means (16 .. 32; 48 .. 64). + // + // step5_lo = [d00 d01 .. d14 d15 d32 d33 .. d46 d47] + // step5_hi = [d16 d17 .. d30 d31 d48 d49 .. d62 d63] + // + // The d00, d02 ... d62 even elements come from (p0, m1) weighted sums. + // The d01, d03 ... d63 odd elements come from (p0, p1) weighted sums. + __m256i step5_lo = _mm256_or_si256(step4_m1_lo, step4_p1_lo); + __m256i step5_hi = _mm256_or_si256(step4_m1_hi, step4_p1_hi); + + // Permute and store. + // + // step6_00_31 = [d00 d01 .. d14 d15 d16 d17 .. d30 d31] + // step6_32_63 = [d32 d33 .. d46 d47 d48 d49 .. d62 d63] + __m256i step6_00_31 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x20); + __m256i step6_32_63 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x31); + _mm256_storeu_si256((__m256i*)(void*)(dp + 0x00), step6_00_31); + _mm256_storeu_si256((__m256i*)(void*)(dp + 0x20), step6_32_63); + + // Advance by up to 32 source samples (64 destination samples). The first + // iteration might be smaller than 32 so that all of the remaining steps + // are exactly 32. + size_t n = 32u - (31u & (0u - src_len)); + dp += 2u * n; + sp_major += n; + sp_minor += n; + src_len -= n; + } + } + + if (last_column) { + uint32_t sv_major_m1 = sp_major[-1]; + uint32_t sv_minor_m1 = sp_minor[-1]; + uint32_t sv_major_p1 = sp_major[+0]; // Clamp offset to zero. + uint32_t sv_minor_p1 = sp_minor[+0]; // Clamp offset to zero. + + uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // + (3u * ((uint32_t)(*sp_minor++))); + *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); + *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); + } + + return dst_ptr; +} +#endif +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) +// ‼ WUFFS MULTI-FILE SECTION -x86_avx2 + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ + defined(WUFFS_CONFIG__MODULE__BASE__UTF8) + +// ---------------- Unicode and UTF-8 + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) { + if (code_point <= 0x7F) { + if (dst.len >= 1) { + dst.ptr[0] = (uint8_t)(code_point); + return 1; + } + + } else if (code_point <= 0x07FF) { + if (dst.len >= 2) { + dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6))); + dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); + return 2; + } + + } else if (code_point <= 0xFFFF) { + if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) { + dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12))); + dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F)); + dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); + return 3; + } + + } else if (code_point <= 0x10FFFF) { + if (dst.len >= 4) { + dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18))); + dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F)); + dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F)); + dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); + return 4; + } + } + + return 0; +} + +// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a +// UTF-8 encoded code point, based on the encoding's initial byte. +// - 0x00 is 1-byte UTF-8 (ASCII). +// - 0x01 is the start of 2-byte UTF-8. +// - 0x02 is the start of 3-byte UTF-8. +// - 0x03 is the start of 4-byte UTF-8. +// - 0x40 is a UTF-8 tail byte. +// - 0x80 is invalid UTF-8. +// +// RFC 3629 (UTF-8) gives this grammar for valid UTF-8: +// UTF8-1 = %x00-7F +// UTF8-2 = %xC2-DF UTF8-tail +// UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) / +// %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail ) +// UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) / +// %xF4 %x80-8F 2( UTF8-tail ) +// UTF8-tail = %x80-BF +static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = { + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x30 ..= 0x37. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. + + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. + + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x80 ..= 0x87. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x88 ..= 0x8F. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x90 ..= 0x97. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x98 ..= 0x9F. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA0 ..= 0xA7. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA8 ..= 0xAF. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB0 ..= 0xB7. + 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB8 ..= 0xBF. + + 0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC0 ..= 0xC7. + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC8 ..= 0xCF. + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD0 ..= 0xD7. + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD8 ..= 0xDF. + 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE0 ..= 0xE7. + 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE8 ..= 0xEF. + 0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. + // 0 1 2 3 4 5 6 7 + // 8 9 A B C D E F +}; + +WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // +wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) { + if (s_len == 0) { + return wuffs_base__make_utf_8__next__output(0, 0); + } + uint32_t c = s_ptr[0]; + switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) { + case 0: + return wuffs_base__make_utf_8__next__output(c, 1); + + case 1: + if (s_len < 2) { + break; + } + c = wuffs_base__peek_u16le__no_bounds_check(s_ptr); + if ((c & 0xC000) != 0x8000) { + break; + } + c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8)); + return wuffs_base__make_utf_8__next__output(c, 2); + + case 2: + if (s_len < 3) { + break; + } + c = wuffs_base__peek_u24le__no_bounds_check(s_ptr); + if ((c & 0xC0C000) != 0x808000) { + break; + } + c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) | + (0x00003F & (c >> 16)); + if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) { + break; + } + return wuffs_base__make_utf_8__next__output(c, 3); + + case 3: + if (s_len < 4) { + break; + } + c = wuffs_base__peek_u32le__no_bounds_check(s_ptr); + if ((c & 0xC0C0C000) != 0x80808000) { + break; + } + c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) | + (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24)); + if ((c <= 0xFFFF) || (0x110000 <= c)) { + break; + } + return wuffs_base__make_utf_8__next__output(c, 4); + } + + return wuffs_base__make_utf_8__next__output( + WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1); +} + +WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // +wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) { + if (s_len == 0) { + return wuffs_base__make_utf_8__next__output(0, 0); + } + const uint8_t* ptr = &s_ptr[s_len - 1]; + if (*ptr < 0x80) { + return wuffs_base__make_utf_8__next__output(*ptr, 1); + + } else if (*ptr < 0xC0) { + const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0]; + uint32_t n = 1; + while (ptr != too_far) { + ptr--; + n++; + if (*ptr < 0x80) { + break; + } else if (*ptr < 0xC0) { + continue; + } + wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n); + if (o.byte_length != n) { + break; + } + return o; + } + } + + return wuffs_base__make_utf_8__next__output( + WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1); +} + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) { + // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time). + // + // TODO: possibly optimize this by manually inlining the + // wuffs_base__utf_8__next calls. + size_t original_len = s_len; + while (s_len > 0) { + wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len); + if ((o.code_point > 0x7F) && (o.byte_length == 1)) { + break; + } + s_ptr += o.byte_length; + s_len -= o.byte_length; + } + return original_len - s_len; +} + +WUFFS_BASE__MAYBE_STATIC size_t // +wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) { + // TODO: possibly optimize this by checking 4 or 8 bytes at a time. + const uint8_t* original_ptr = s_ptr; + const uint8_t* p = s_ptr; + const uint8_t* q = s_ptr + s_len; + for (; (p != q) && ((*p & 0x80) == 0); p++) { + } + return (size_t)(p - original_ptr); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__BASE) || + // defined(WUFFS_CONFIG__MODULE__BASE__UTF8) + +#ifdef __cplusplus +} // extern "C" +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) + +// ---------------- Status Codes Implementations + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up__choosy_default( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up_arm_neon( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up_x86_sse42( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +// ---------------- VTables + +const wuffs_base__hasher_u32__func_ptrs +wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = { + (uint32_t(*)(const void*))(&wuffs_adler32__hasher__checksum_u32), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_adler32__hasher__get_quirk), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_adler32__hasher__set_quirk), + (wuffs_base__empty_struct(*)(void*, + wuffs_base__slice_u8))(&wuffs_adler32__hasher__update), + (uint32_t(*)(void*, + wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_adler32__hasher__initialize( + wuffs_adler32__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default; + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name = + wuffs_base__hasher_u32__vtable_name; + self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers = + (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32); + return wuffs_base__make_status(NULL); +} + +wuffs_adler32__hasher* +wuffs_adler32__hasher__alloc(void) { + wuffs_adler32__hasher* x = + (wuffs_adler32__hasher*)(calloc(sizeof(wuffs_adler32__hasher), 1)); + if (!x) { + return NULL; + } + if (wuffs_adler32__hasher__initialize( + x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_adler32__hasher(void) { + return sizeof(wuffs_adler32__hasher); +} + +// ---------------- Function Implementations + +// -------- func adler32.hasher.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_adler32__hasher__get_quirk( + const wuffs_adler32__hasher* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func adler32.hasher.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_adler32__hasher__set_quirk( + wuffs_adler32__hasher* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func adler32.hasher.update + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_adler32__hasher__update( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if ( ! self->private_impl.f_started) { + self->private_impl.f_started = true; + self->private_impl.f_state = 1u; + self->private_impl.choosy_up = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 : +#endif + self->private_impl.choosy_up); + } + wuffs_adler32__hasher__up(self, a_x); + return wuffs_base__make_empty_struct(); +} + +// -------- func adler32.hasher.update_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_adler32__hasher__update_u32( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + wuffs_adler32__hasher__update(self, a_x); + return self->private_impl.f_state; +} + +// -------- func adler32.hasher.up + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + return (*self->private_impl.choosy_up)(self, a_x); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up__choosy_default( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s1 = 0; + uint32_t v_s2 = 0; + wuffs_base__slice_u8 v_remaining = {0}; + wuffs_base__slice_u8 v_p = {0}; + + v_s1 = ((self->private_impl.f_state) & 0xFFFFu); + v_s2 = ((self->private_impl.f_state) >> (32u - 16u)); + while (((uint64_t)(a_x.len)) > 0u) { + v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u); + if (((uint64_t)(a_x.len)) > 5552u) { + v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552u); + a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552u); + } + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8); + while (v_p.ptr < i_end0_p) { + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + } + v_p.len = 1; + uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end1_p) { + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + } + v_p.len = 0; + } + v_s1 %= 65521u; + v_s2 %= 65521u; + a_x = v_remaining; + } + self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u)); + return wuffs_base__make_empty_struct(); +} + +// -------- func adler32.hasher.checksum_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_adler32__hasher__checksum_u32( + const wuffs_adler32__hasher* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_state; +} + +// ‼ WUFFS MULTI-FILE SECTION +arm_neon +// -------- func adler32.hasher.up_arm_neon + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up_arm_neon( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s1 = 0; + uint32_t v_s2 = 0; + wuffs_base__slice_u8 v_remaining = {0}; + wuffs_base__slice_u8 v_p = {0}; + uint8x16_t v_p__left = {0}; + uint8x16_t v_p_right = {0}; + uint32x4_t v_v1 = {0}; + uint32x4_t v_v2 = {0}; + uint16x8_t v_col0 = {0}; + uint16x8_t v_col1 = {0}; + uint16x8_t v_col2 = {0}; + uint16x8_t v_col3 = {0}; + uint32x2_t v_sum1 = {0}; + uint32x2_t v_sum2 = {0}; + uint32x2_t v_sum12 = {0}; + uint32_t v_num_iterate_bytes = 0; + uint64_t v_tail_index = 0; + + v_s1 = ((self->private_impl.f_state) & 0xFFFFu); + v_s2 = ((self->private_impl.f_state) >> (32u - 16u)); + while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) { + v_s1 += ((uint32_t)(a_x.ptr[0u])); + v_s2 += v_s1; + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + v_s1 %= 65521u; + v_s2 %= 65521u; + while (((uint64_t)(a_x.len)) > 0u) { + v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u); + if (((uint64_t)(a_x.len)) > 5536u) { + v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u); + a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u); + } + v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u))); + v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes)); + v_v1 = vdupq_n_u32(0u); + v_v2 = vdupq_n_u32(0u); + v_col0 = vdupq_n_u16(0u); + v_col1 = vdupq_n_u16(0u); + v_col2 = vdupq_n_u16(0u); + v_col3 = vdupq_n_u16(0u); + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 32; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); + while (v_p.ptr < i_end0_p) { + v_p__left = vld1q_u8(v_p.ptr); + v_p_right = vld1q_u8(v_p.ptr + 16u); + v_v2 = vaddq_u32(v_v2, v_v1); + v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right)); + v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left)); + v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left)); + v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right)); + v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right)); + v_p.ptr += 32; + } + v_p.len = 0; + } + v_v2 = vshlq_n_u32(v_v2, 5u); + v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32u, 31u, 30u, 29u})); + v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28u, 27u, 26u, 25u})); + v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24u, 23u, 22u, 21u})); + v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20u, 19u, 18u, 17u})); + v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16u, 15u, 14u, 13u})); + v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12u, 11u, 10u, 9u})); + v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8u, 7u, 6u, 5u})); + v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4u, 3u, 2u, 1u})); + v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1)); + v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2)); + v_sum12 = vpadd_u32(v_sum1, v_sum2); + v_s1 += vget_lane_u32(v_sum12, 0u); + v_s2 += vget_lane_u32(v_sum12, 1u); + v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u); + if (v_tail_index < ((uint64_t)(a_x.len))) { + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + } + v_p.len = 0; + } + } + v_s1 %= 65521u; + v_s2 %= 65521u; + a_x = v_remaining; + } + self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u)); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +// ‼ WUFFS MULTI-FILE SECTION -arm_neon + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func adler32.hasher.up_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_adler32__hasher__up_x86_sse42( + wuffs_adler32__hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s1 = 0; + uint32_t v_s2 = 0; + wuffs_base__slice_u8 v_remaining = {0}; + wuffs_base__slice_u8 v_p = {0}; + __m128i v_zeroes = {0}; + __m128i v_ones = {0}; + __m128i v_weights__left = {0}; + __m128i v_weights_right = {0}; + __m128i v_q__left = {0}; + __m128i v_q_right = {0}; + __m128i v_v1 = {0}; + __m128i v_v2 = {0}; + __m128i v_v2j = {0}; + __m128i v_v2k = {0}; + uint32_t v_num_iterate_bytes = 0; + uint64_t v_tail_index = 0; + + v_zeroes = _mm_set1_epi16((int16_t)(0u)); + v_ones = _mm_set1_epi16((int16_t)(1u)); + v_weights__left = _mm_set_epi8((int8_t)(17u), (int8_t)(18u), (int8_t)(19u), (int8_t)(20u), (int8_t)(21u), (int8_t)(22u), (int8_t)(23u), (int8_t)(24u), (int8_t)(25u), (int8_t)(26u), (int8_t)(27u), (int8_t)(28u), (int8_t)(29u), (int8_t)(30u), (int8_t)(31u), (int8_t)(32u)); + v_weights_right = _mm_set_epi8((int8_t)(1u), (int8_t)(2u), (int8_t)(3u), (int8_t)(4u), (int8_t)(5u), (int8_t)(6u), (int8_t)(7u), (int8_t)(8u), (int8_t)(9u), (int8_t)(10u), (int8_t)(11u), (int8_t)(12u), (int8_t)(13u), (int8_t)(14u), (int8_t)(15u), (int8_t)(16u)); + v_s1 = ((self->private_impl.f_state) & 0xFFFFu); + v_s2 = ((self->private_impl.f_state) >> (32u - 16u)); + while (((uint64_t)(a_x.len)) > 0u) { + v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u); + if (((uint64_t)(a_x.len)) > 5536u) { + v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u); + a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u); + } + v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u))); + v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes)); + v_v1 = _mm_setzero_si128(); + v_v2j = _mm_setzero_si128(); + v_v2k = _mm_setzero_si128(); + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 32; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); + while (v_p.ptr < i_end0_p) { + v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr)); + v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u)); + v_v2j = _mm_add_epi32(v_v2j, v_v1); + v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes)); + v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes)); + v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left))); + v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right))); + v_p.ptr += 32; + } + v_p.len = 0; + } + v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177u))); + v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78u))); + v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1))); + v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5u))); + v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177u))); + v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78u))); + v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2))); + v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u); + if (v_tail_index < ((uint64_t)(a_x.len))) { + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s1 += ((uint32_t)(v_p.ptr[0u])); + v_s2 += v_s1; + v_p.ptr += 1; + } + v_p.len = 0; + } + } + v_s1 %= 65521u; + v_s2 %= 65521u; + a_x = v_remaining; + } + self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u)); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) + +// ---------------- Status Codes Implementations + +const char wuffs_bmp__error__bad_header[] = "#bmp: bad header"; +const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression"; +const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input"; +const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file"; +const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read"; + +// ---------------- Private Consts + +#define WUFFS_BMP__COMPRESSION_NONE 0 + +#define WUFFS_BMP__COMPRESSION_RLE8 1 + +#define WUFFS_BMP__COMPRESSION_RLE4 2 + +#define WUFFS_BMP__COMPRESSION_BITFIELDS 3 + +#define WUFFS_BMP__COMPRESSION_JPEG 4 + +#define WUFFS_BMP__COMPRESSION_PNG 5 + +#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6 + +#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256 + +#define WUFFS_BMP__RLE_STATE_NEUTRAL 0 + +#define WUFFS_BMP__RLE_STATE_RUN 1 + +#define WUFFS_BMP__RLE_STATE_ESCAPE 2 + +#define WUFFS_BMP__RLE_STATE_LITERAL 3 + +#define WUFFS_BMP__RLE_STATE_DELTA_X 4 + +#define WUFFS_BMP__RLE_STATE_DELTA_Y 5 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_image_config( + wuffs_bmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_frame_config( + wuffs_bmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_frame( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_none( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_rle( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_bitfields( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_low_bit_depth( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_tell_me_more( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__read_palette( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__process_masks( + wuffs_bmp__decoder* self); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_bmp__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_bmp__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_bmp__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_bmp__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_bmp__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_bmp__decoder__initialize( + wuffs_bmp__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_bmp__decoder* +wuffs_bmp__decoder__alloc(void) { + wuffs_bmp__decoder* x = + (wuffs_bmp__decoder*)(calloc(sizeof(wuffs_bmp__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_bmp__decoder__initialize( + x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_bmp__decoder(void) { + return sizeof(wuffs_bmp__decoder); +} + +// ---------------- Function Implementations + +// -------- func bmp.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__get_quirk( + const wuffs_bmp__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func bmp.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__set_quirk( + wuffs_bmp__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func bmp.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_image_config( + wuffs_bmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func bmp.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_image_config( + wuffs_bmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_magic = 0; + uint32_t v_width = 0; + uint32_t v_height = 0; + uint32_t v_planes = 0; + uint32_t v_dst_pixfmt = 0; + uint32_t v_byte_width = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_call_sequence != 0u) || (self->private_impl.f_io_redirect_fourcc == 1u)) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if (self->private_impl.f_io_redirect_fourcc != 0u) { + status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); + goto ok; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 8) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_magic = t_0; + } + if (v_magic != 19778u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + self->private_data.s_do_decode_image_config[0].scratch = 8u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + self->private_impl.f_padding = t_1; + } + if (self->private_impl.f_padding < 14u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + self->private_impl.f_padding -= 14u; + self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + self->private_impl.f_bitmap_info_len = t_2; + } + if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len; + if (self->private_impl.f_bitmap_info_len == 12u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; + if (num_bits_3 == 8) { + t_3 = ((uint32_t)(*scratch)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)) << 56; + } + } + self->private_impl.f_width = t_3; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 8) { + t_4 = ((uint32_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + self->private_impl.f_height = t_4; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + uint32_t t_5; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5; + if (num_bits_5 == 8) { + t_5 = ((uint32_t)(*scratch)); + break; + } + num_bits_5 += 8u; + *scratch |= ((uint64_t)(num_bits_5)) << 56; + } + } + v_planes = t_5; + } + if (v_planes != 1u) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + uint32_t t_6; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6; + if (num_bits_6 == 8) { + t_6 = ((uint32_t)(*scratch)); + break; + } + num_bits_6 += 8u; + *scratch |= ((uint64_t)(num_bits_6)) << 56; + } + } + self->private_impl.f_bits_per_pixel = t_6; + } + } else if (self->private_impl.f_bitmap_info_len == 16u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + uint32_t t_7; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7; + if (num_bits_7 == 24) { + t_7 = ((uint32_t)(*scratch)); + break; + } + num_bits_7 += 8u; + *scratch |= ((uint64_t)(num_bits_7)) << 56; + } + } + v_width = t_7; + } + if (v_width > 2147483647u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } else if (v_width > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_width = v_width; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18); + uint32_t t_8; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8; + if (num_bits_8 == 24) { + t_8 = ((uint32_t)(*scratch)); + break; + } + num_bits_8 += 8u; + *scratch |= ((uint64_t)(num_bits_8)) << 56; + } + } + v_height = t_8; + } + if (v_height > 2147483647u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } else if (v_height > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_height = v_height; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20); + uint32_t t_9; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9; + if (num_bits_9 == 8) { + t_9 = ((uint32_t)(*scratch)); + break; + } + num_bits_9 += 8u; + *scratch |= ((uint64_t)(num_bits_9)) << 56; + } + } + v_planes = t_9; + } + if (v_planes != 1u) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); + uint32_t t_10; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10; + if (num_bits_10 == 8) { + t_10 = ((uint32_t)(*scratch)); + break; + } + num_bits_10 += 8u; + *scratch |= ((uint64_t)(num_bits_10)) << 56; + } + } + self->private_impl.f_bits_per_pixel = t_10; + } + } else { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24); + uint32_t t_11; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11; + if (num_bits_11 == 24) { + t_11 = ((uint32_t)(*scratch)); + break; + } + num_bits_11 += 8u; + *scratch |= ((uint64_t)(num_bits_11)) << 56; + } + } + v_width = t_11; + } + if (v_width > 2147483647u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } else if (v_width > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_width = v_width; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26); + uint32_t t_12; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12; + if (num_bits_12 == 24) { + t_12 = ((uint32_t)(*scratch)); + break; + } + num_bits_12 += 8u; + *scratch |= ((uint64_t)(num_bits_12)) << 56; + } + } + v_height = t_12; + } + if (v_height == 2147483648u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } else if (v_height > 2147483648u) { + v_height = ((uint32_t)(0u - v_height)); + if (v_height > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_height = v_height; + self->private_impl.f_top_down = true; + } else if (v_height > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } else { + self->private_impl.f_height = v_height; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28); + uint32_t t_13; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13; + if (num_bits_13 == 8) { + t_13 = ((uint32_t)(*scratch)); + break; + } + num_bits_13 += 8u; + *scratch |= ((uint64_t)(num_bits_13)) << 56; + } + } + v_planes = t_13; + } + if (v_planes != 1u) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30); + uint32_t t_14; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14; + if (num_bits_14 == 8) { + t_14 = ((uint32_t)(*scratch)); + break; + } + num_bits_14 += 8u; + *scratch |= ((uint64_t)(num_bits_14)) << 56; + } + } + self->private_impl.f_bits_per_pixel = t_14; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32); + uint32_t t_15; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15; + if (num_bits_15 == 24) { + t_15 = ((uint32_t)(*scratch)); + break; + } + num_bits_15 += 8u; + *scratch |= ((uint64_t)(num_bits_15)) << 56; + } + } + self->private_impl.f_compression = t_15; + } + if (self->private_impl.f_bits_per_pixel == 0u) { + if (self->private_impl.f_compression == 4u) { + self->private_impl.f_io_redirect_fourcc = 1246774599u; + status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); + goto ok; + } else if (self->private_impl.f_compression == 5u) { + self->private_impl.f_io_redirect_fourcc = 1347307296u; + status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); + goto ok; + } + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + self->private_data.s_do_decode_image_config[0].scratch = 20u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + if (self->private_impl.f_bitmap_info_len == 40u) { + if (self->private_impl.f_bits_per_pixel >= 16u) { + if (self->private_impl.f_padding >= 16u) { + self->private_impl.f_bitmap_info_len = 56u; + self->private_impl.f_padding -= 16u; + } else if (self->private_impl.f_padding >= 12u) { + self->private_impl.f_bitmap_info_len = 52u; + self->private_impl.f_padding -= 12u; + } + } + } else if ((self->private_impl.f_bitmap_info_len != 52u) && + (self->private_impl.f_bitmap_info_len != 56u) && + (self->private_impl.f_bitmap_info_len != 64u) && + (self->private_impl.f_bitmap_info_len != 108u) && + (self->private_impl.f_bitmap_info_len != 124u)) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + if (self->private_impl.f_compression == 6u) { + self->private_impl.f_compression = 3u; + } + if (self->private_impl.f_compression == 3u) { + if (self->private_impl.f_bitmap_info_len >= 52u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35); + uint32_t t_16; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16; + if (num_bits_16 == 24) { + t_16 = ((uint32_t)(*scratch)); + break; + } + num_bits_16 += 8u; + *scratch |= ((uint64_t)(num_bits_16)) << 56; + } + } + self->private_impl.f_channel_masks[2u] = t_16; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37); + uint32_t t_17; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17; + if (num_bits_17 == 24) { + t_17 = ((uint32_t)(*scratch)); + break; + } + num_bits_17 += 8u; + *scratch |= ((uint64_t)(num_bits_17)) << 56; + } + } + self->private_impl.f_channel_masks[1u] = t_17; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39); + uint32_t t_18; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18; + if (num_bits_18 == 24) { + t_18 = ((uint32_t)(*scratch)); + break; + } + num_bits_18 += 8u; + *scratch |= ((uint64_t)(num_bits_18)) << 56; + } + } + self->private_impl.f_channel_masks[0u] = t_18; + } + if (self->private_impl.f_bitmap_info_len >= 56u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41); + uint32_t t_19; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19; + if (num_bits_19 == 24) { + t_19 = ((uint32_t)(*scratch)); + break; + } + num_bits_19 += 8u; + *scratch |= ((uint64_t)(num_bits_19)) << 56; + } + } + self->private_impl.f_channel_masks[3u] = t_19; + } + self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56u)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + } + if ((self->private_impl.f_channel_masks[0u] == 255u) && (self->private_impl.f_channel_masks[1u] == 65280u) && (self->private_impl.f_channel_masks[2u] == 16711680u)) { + if (self->private_impl.f_bits_per_pixel == 24u) { + self->private_impl.f_compression = 0u; + } else if (self->private_impl.f_bits_per_pixel == 32u) { + if ((self->private_impl.f_channel_masks[3u] == 0u) || (self->private_impl.f_channel_masks[3u] == 4278190080u)) { + self->private_impl.f_compression = 0u; + } + } + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44); + status = wuffs_bmp__decoder__process_masks(self); + if (status.repr) { + goto suspend; + } + } + } else if (self->private_impl.f_bitmap_info_len >= 40u) { + self->private_data.s_do_decode_image_config[0].scratch = (self->private_impl.f_bitmap_info_len - 40u); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + } + if (self->private_impl.f_compression != 3u) { + if (self->private_impl.f_bits_per_pixel < 16u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46); + status = wuffs_bmp__decoder__read_palette(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + } + if (self->private_impl.f_compression == 0u) { + if ((self->private_impl.f_bits_per_pixel == 1u) || (self->private_impl.f_bits_per_pixel == 2u) || (self->private_impl.f_bits_per_pixel == 4u)) { + self->private_impl.f_src_pixfmt = 2198077448u; + self->private_impl.f_compression = 256u; + } else if (self->private_impl.f_bits_per_pixel == 8u) { + self->private_impl.f_src_pixfmt = 2198077448u; + } else if (self->private_impl.f_bits_per_pixel == 16u) { + self->private_impl.f_compression = 3u; + self->private_impl.f_channel_masks[0u] = 31u; + self->private_impl.f_channel_masks[1u] = 992u; + self->private_impl.f_channel_masks[2u] = 31744u; + self->private_impl.f_channel_masks[3u] = 0u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47); + status = wuffs_bmp__decoder__process_masks(self); + if (status.repr) { + goto suspend; + } + self->private_impl.f_src_pixfmt = 2164308923u; + } else if (self->private_impl.f_bits_per_pixel == 24u) { + self->private_impl.f_src_pixfmt = 2147485832u; + } else if (self->private_impl.f_bits_per_pixel == 32u) { + if (self->private_impl.f_channel_masks[3u] == 0u) { + self->private_impl.f_src_pixfmt = 2415954056u; + } else { + self->private_impl.f_src_pixfmt = 2164295816u; + } + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + } else if (self->private_impl.f_compression == 1u) { + if (self->private_impl.f_bits_per_pixel == 8u) { + self->private_impl.f_src_pixfmt = 2198077448u; + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + } else if (self->private_impl.f_compression == 2u) { + if (self->private_impl.f_bits_per_pixel == 4u) { + self->private_impl.f_src_pixfmt = 2198077448u; + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + } else if (self->private_impl.f_compression == 3u) { + if ((self->private_impl.f_bits_per_pixel == 16u) || (self->private_impl.f_bits_per_pixel == 32u)) { + self->private_impl.f_src_pixfmt = 2164308923u; + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + } else { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + if (((self->private_impl.f_bitmap_info_len < 40u) || (self->private_impl.f_bitmap_info_len == 64u)) && + (self->private_impl.f_bits_per_pixel != 1u) && + (self->private_impl.f_bits_per_pixel != 4u) && + (self->private_impl.f_bits_per_pixel != 8u) && + (self->private_impl.f_bits_per_pixel != 24u)) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + if (self->private_impl.f_bits_per_pixel == 1u) { + v_byte_width = ((self->private_impl.f_width >> 3u) + (((self->private_impl.f_width & 7u) + 7u) >> 3u)); + self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u); + } else if (self->private_impl.f_bits_per_pixel == 2u) { + v_byte_width = ((self->private_impl.f_width >> 2u) + (((self->private_impl.f_width & 3u) + 3u) >> 2u)); + self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u); + } else if (self->private_impl.f_bits_per_pixel == 4u) { + v_byte_width = ((self->private_impl.f_width >> 1u) + (self->private_impl.f_width & 1u)); + self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u); + } else if (self->private_impl.f_bits_per_pixel == 8u) { + self->private_impl.f_pad_per_row = ((4u - (self->private_impl.f_width & 3u)) & 3u); + } else if (self->private_impl.f_bits_per_pixel == 16u) { + self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1u) * 2u); + } else if (self->private_impl.f_bits_per_pixel == 24u) { + self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3u); + } else if (self->private_impl.f_bits_per_pixel == 32u) { + self->private_impl.f_pad_per_row = 0u; + } + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + if (a_dst != NULL) { + v_dst_pixfmt = 2164295816u; + if ((self->private_impl.f_channel_num_bits[0u] > 8u) || + (self->private_impl.f_channel_num_bits[1u] > 8u) || + (self->private_impl.f_channel_num_bits[2u] > 8u) || + (self->private_impl.f_channel_num_bits[3u] > 8u)) { + v_dst_pixfmt = 2164308923u; + } + wuffs_base__image_config__set( + a_dst, + v_dst_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + (self->private_impl.f_channel_masks[3u] == 0u)); + } + self->private_impl.f_call_sequence = 32u; + + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_frame_config( + wuffs_bmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func bmp.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_frame_config( + wuffs_bmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + self->private_impl.f_frame_config_io_position, + 0u, + true, + false, + 4278190080u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__decode_frame( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func bmp.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_decode_frame( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_padding; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame[0].scratch; + if ((self->private_impl.f_width > 0u) && (self->private_impl.f_height > 0u)) { + self->private_impl.f_dst_x = 0u; + if (self->private_impl.f_top_down) { + self->private_impl.f_dst_y = 0u; + self->private_impl.f_dst_y_inc = 1u; + } else { + self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1u)); + self->private_impl.f_dst_y_inc = 4294967295u; + } + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)), + wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), + wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + while (true) { + if (self->private_impl.f_compression == 0u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } else if (self->private_impl.f_compression < 3u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } else if (self->private_impl.f_compression == 3u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } else { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + } + self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_pending_pad; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame[0].scratch; + self->private_impl.f_pending_pad = 0u; + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.swizzle_none + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_none( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + uint32_t v_src_bytes_per_pixel = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_j = 0; + uint64_t v_n = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + label__outer__continue:; + while (true) { + while (self->private_impl.f_pending_pad > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + self->private_impl.f_pending_pad -= 1u; + iop_a_src += 1u; + } + while (true) { + if (self->private_impl.f_dst_x == self->private_impl.f_width) { + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + if (self->private_impl.f_height > 0u) { + self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; + } + goto label__outer__break; + } else if (self->private_impl.f_pad_per_row != 0u) { + self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; + goto label__outer__continue; + } + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i >= ((uint64_t)(v_dst.len))) { + if (self->private_impl.f_bits_per_pixel > 32u) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8u); + if (v_src_bytes_per_pixel == 0u) { + status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); + goto exit; + } + v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); + v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); + v_j = v_n; + while (v_j >= 8u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) { + iop_a_src += (v_src_bytes_per_pixel * 8u); + } + v_j -= 8u; + } + while (v_j > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) { + iop_a_src += (v_src_bytes_per_pixel * 1u); + } + v_j -= 1u; + } + } else { + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( + &self->private_impl.f_swizzler, + wuffs_base__slice_u8__subslice_i(v_dst, v_i), + v_dst_palette, + &iop_a_src, + io2_a_src); + } + if (v_n == 0u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + } + } + label__outer__break:; + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.swizzle_rle + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_rle( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_row = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_n = 0; + uint32_t v_p0 = 0; + uint8_t v_code = 0; + uint8_t v_indexes[2] = {0}; + uint32_t v_rle_state = 0; + uint32_t v_chunk_bits = 0; + uint32_t v_chunk_count = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + v_rle_state = self->private_impl.f_rle_state; + label__outer__continue:; + while (true) { + v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { + v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); + } + label__middle__continue:; + while (true) { + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i <= ((uint64_t)(v_row.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i); + } else { + v_dst = wuffs_base__utility__empty_slice_u8(); + } + while (true) { + while (true) { + if (v_rle_state == 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + if (v_code == 0u) { + v_rle_state = 2u; + continue; + } + self->private_impl.f_rle_length = ((uint32_t)(v_code)); + v_rle_state = 1u; + continue; + } else if (v_rle_state == 1u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + if (self->private_impl.f_bits_per_pixel == 8u) { + v_p0 = 0u; + while (v_p0 < self->private_impl.f_rle_length) { + self->private_data.f_scratch[v_p0] = v_code; + v_p0 += 1u; + } + } else { + v_indexes[0u] = ((uint8_t)((v_code >> 4u))); + v_indexes[1u] = (v_code & 15u); + v_p0 = 0u; + while (v_p0 < self->private_impl.f_rle_length) { + self->private_data.f_scratch[(v_p0 + 0u)] = v_indexes[0u]; + self->private_data.f_scratch[(v_p0 + 1u)] = v_indexes[1u]; + v_p0 += 2u; + } + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length)); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length); + v_rle_state = 0u; + goto label__middle__continue; + } else if (v_rle_state == 2u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + if (v_code < 2u) { + if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0u)) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); + goto exit; + } + wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u); + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + if (v_code > 0u) { + goto label__outer__break; + } + v_rle_state = 0u; + goto label__outer__continue; + } else if (v_code == 2u) { + v_rle_state = 4u; + continue; + } + self->private_impl.f_rle_length = ((uint32_t)(v_code)); + self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8u) && ((v_code & 1u) != 0u)); + v_rle_state = 3u; + continue; + } else if (v_rle_state == 3u) { + if (self->private_impl.f_bits_per_pixel == 8u) { + v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( + &self->private_impl.f_swizzler, + self->private_impl.f_rle_length, + v_dst, + v_dst_palette, + &iop_a_src, + io2_a_src); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)(v_n))); + } else { + v_chunk_count = ((self->private_impl.f_rle_length + 3u) / 4u); + v_p0 = 0u; + while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2u)) { + v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2u; + self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u)))); + self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u)))); + self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u)))); + self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u)))); + v_p0 = ((v_p0 & 255u) + 4u); + v_chunk_count -= 1u; + } + v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length); + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0)); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0); + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0); + } + if (self->private_impl.f_rle_length > 0u) { + goto label__goto_suspend__break; + } + if (self->private_impl.f_rle_padded) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + iop_a_src += 1u; + self->private_impl.f_rle_padded = false; + } + v_rle_state = 0u; + goto label__middle__continue; + } else if (v_rle_state == 4u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + v_rle_state = 5u; + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) { + goto label__goto_suspend__break; + } + v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + if (self->private_impl.f_rle_delta_x > 0u) { + wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x))); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x))); + self->private_impl.f_rle_delta_x = 0u; + if (self->private_impl.f_dst_x > self->private_impl.f_width) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); + goto exit; + } + } + if (v_code > 0u) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_code -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + while (true) { + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); + goto exit; + } + v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { + v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); + } + if (v_code <= 0u) { + wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x))); + break; + } + wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u); +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_code -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + } + v_rle_state = 0u; + goto label__middle__continue; + } + } + label__goto_suspend__break:; + self->private_impl.f_rle_state = v_rle_state; + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + } + label__outer__break:; + while (self->private_impl.f_dst_y < self->private_impl.f_height) { + v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { + v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); + } + wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u); + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + } + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.swizzle_bitfields + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_bitfields( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_n = 0; + uint32_t v_p0 = 0; + uint32_t v_p1 = 0; + uint32_t v_p1_temp = 0; + uint32_t v_num_bits = 0; + uint32_t v_c = 0; + uint32_t v_c32 = 0; + uint32_t v_channel = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + label__outer__continue:; + while (true) { + while (self->private_impl.f_pending_pad > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + self->private_impl.f_pending_pad -= 1u; + iop_a_src += 1u; + } + while (true) { + if (self->private_impl.f_dst_x == self->private_impl.f_width) { + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + if (self->private_impl.f_height > 0u) { + self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; + } + goto label__outer__break; + } else if (self->private_impl.f_pad_per_row != 0u) { + self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; + goto label__outer__continue; + } + } + v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)); + v_p1 = wuffs_base__u32__min(v_p1_temp, 256u); + v_p0 = 0u; + while (v_p0 < v_p1) { + if (self->private_impl.f_bits_per_pixel == 16u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + break; + } + v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2u; + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + break; + } + v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4u; + } + v_channel = 0u; + while (v_channel < 4u) { + if (self->private_impl.f_channel_num_bits[v_channel] == 0u) { + self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = 255u; + self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = 255u; + } else { + v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]); + v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel])); + while (v_num_bits < 16u) { + v_c |= ((uint32_t)(v_c << v_num_bits)); + v_num_bits *= 2u; + } + v_c >>= (v_num_bits - 16u); + self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = ((uint8_t)((v_c >> 0u))); + self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = ((uint8_t)((v_c >> 8u))); + } + v_channel += 1u; + } + v_p0 += 1u; + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i >= ((uint64_t)(v_dst.len))) { + v_n = ((uint64_t)(v_p0)); + } else { + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8u * v_p0))); + } + if (v_n == 0u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + } + } + label__outer__break:; + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.swizzle_low_bit_depth + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__swizzle_low_bit_depth( + wuffs_bmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_n = 0; + uint32_t v_p0 = 0; + uint32_t v_chunk_bits = 0; + uint32_t v_chunk_count = 0; + uint32_t v_pixels_per_chunk = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + while (true) { + if (self->private_impl.f_dst_x == self->private_impl.f_width) { + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + break; + } + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i >= ((uint64_t)(v_dst.len))) { + if (self->private_impl.f_bits_per_pixel == 1u) { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u); + v_pixels_per_chunk = 32u; + } else if (self->private_impl.f_bits_per_pixel == 2u) { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u); + v_pixels_per_chunk = 16u; + } else { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u); + v_pixels_per_chunk = 8u; + } + while ((v_chunk_count >= 64u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256u)) { + iop_a_src += 256u; + self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64u)))); + v_chunk_count -= 64u; + } + while ((v_chunk_count >= 8u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32u)) { + iop_a_src += 32u; + self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8u)))); + v_chunk_count -= 8u; + } + while (v_chunk_count > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + iop_a_src += 4u; + self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1u)))); + v_chunk_count -= 1u; + } + continue; + } + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i); + v_p0 = 0u; + if (self->private_impl.f_bits_per_pixel == 1u) { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u); + v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16u); + while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) { + v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4u; + self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((1u & (v_chunk_bits >> 31u)))); + self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((1u & (v_chunk_bits >> 30u)))); + self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((1u & (v_chunk_bits >> 29u)))); + self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((1u & (v_chunk_bits >> 28u)))); + self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((1u & (v_chunk_bits >> 27u)))); + self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((1u & (v_chunk_bits >> 26u)))); + self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((1u & (v_chunk_bits >> 25u)))); + self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((1u & (v_chunk_bits >> 24u)))); + self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((1u & (v_chunk_bits >> 23u)))); + self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((1u & (v_chunk_bits >> 22u)))); + self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((1u & (v_chunk_bits >> 21u)))); + self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((1u & (v_chunk_bits >> 20u)))); + self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((1u & (v_chunk_bits >> 19u)))); + self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((1u & (v_chunk_bits >> 18u)))); + self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((1u & (v_chunk_bits >> 17u)))); + self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((1u & (v_chunk_bits >> 16u)))); + self->private_data.f_scratch[(v_p0 + 16u)] = ((uint8_t)((1u & (v_chunk_bits >> 15u)))); + self->private_data.f_scratch[(v_p0 + 17u)] = ((uint8_t)((1u & (v_chunk_bits >> 14u)))); + self->private_data.f_scratch[(v_p0 + 18u)] = ((uint8_t)((1u & (v_chunk_bits >> 13u)))); + self->private_data.f_scratch[(v_p0 + 19u)] = ((uint8_t)((1u & (v_chunk_bits >> 12u)))); + self->private_data.f_scratch[(v_p0 + 20u)] = ((uint8_t)((1u & (v_chunk_bits >> 11u)))); + self->private_data.f_scratch[(v_p0 + 21u)] = ((uint8_t)((1u & (v_chunk_bits >> 10u)))); + self->private_data.f_scratch[(v_p0 + 22u)] = ((uint8_t)((1u & (v_chunk_bits >> 9u)))); + self->private_data.f_scratch[(v_p0 + 23u)] = ((uint8_t)((1u & (v_chunk_bits >> 8u)))); + self->private_data.f_scratch[(v_p0 + 24u)] = ((uint8_t)((1u & (v_chunk_bits >> 7u)))); + self->private_data.f_scratch[(v_p0 + 25u)] = ((uint8_t)((1u & (v_chunk_bits >> 6u)))); + self->private_data.f_scratch[(v_p0 + 26u)] = ((uint8_t)((1u & (v_chunk_bits >> 5u)))); + self->private_data.f_scratch[(v_p0 + 27u)] = ((uint8_t)((1u & (v_chunk_bits >> 4u)))); + self->private_data.f_scratch[(v_p0 + 28u)] = ((uint8_t)((1u & (v_chunk_bits >> 3u)))); + self->private_data.f_scratch[(v_p0 + 29u)] = ((uint8_t)((1u & (v_chunk_bits >> 2u)))); + self->private_data.f_scratch[(v_p0 + 30u)] = ((uint8_t)((1u & (v_chunk_bits >> 1u)))); + self->private_data.f_scratch[(v_p0 + 31u)] = ((uint8_t)((1u & (v_chunk_bits >> 0u)))); + v_p0 = ((v_p0 & 511u) + 32u); + v_chunk_count -= 1u; + } + } else if (self->private_impl.f_bits_per_pixel == 2u) { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u); + v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32u); + while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) { + v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4u; + self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((3u & (v_chunk_bits >> 30u)))); + self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((3u & (v_chunk_bits >> 28u)))); + self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((3u & (v_chunk_bits >> 26u)))); + self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((3u & (v_chunk_bits >> 24u)))); + self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((3u & (v_chunk_bits >> 22u)))); + self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((3u & (v_chunk_bits >> 20u)))); + self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((3u & (v_chunk_bits >> 18u)))); + self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((3u & (v_chunk_bits >> 16u)))); + self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((3u & (v_chunk_bits >> 14u)))); + self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((3u & (v_chunk_bits >> 12u)))); + self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((3u & (v_chunk_bits >> 10u)))); + self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((3u & (v_chunk_bits >> 8u)))); + self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((3u & (v_chunk_bits >> 6u)))); + self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((3u & (v_chunk_bits >> 4u)))); + self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((3u & (v_chunk_bits >> 2u)))); + self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((3u & (v_chunk_bits >> 0u)))); + v_p0 = ((v_p0 & 511u) + 16u); + v_chunk_count -= 1u; + } + } else { + v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u); + v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64u); + while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) { + v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4u; + self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 28u)))); + self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 24u)))); + self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 20u)))); + self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 16u)))); + self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u)))); + self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u)))); + self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u)))); + self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u)))); + v_p0 = ((v_p0 & 511u) + 8u); + v_chunk_count -= 1u; + } + } + v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x)); + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0)); + if (v_n == 0u) { + status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); + goto ok; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + } + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_bmp__decoder__frame_dirty_rect( + const wuffs_bmp__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func bmp.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_bmp__decoder__num_animation_loops( + const wuffs_bmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func bmp.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__num_decoded_frame_configs( + const wuffs_bmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func bmp.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__num_decoded_frames( + const wuffs_bmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func bmp.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__restart_frame( + wuffs_bmp__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if (a_index != 0u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + self->private_impl.f_frame_config_io_position = a_io_position; + return wuffs_base__make_status(NULL); +} + +// -------- func bmp.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_bmp__decoder__set_report_metadata( + wuffs_bmp__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func bmp.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bmp__decoder__tell_me_more( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_tell_me_more[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func bmp.decoder.do_tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__do_tell_me_more( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + if (self->private_impl.f_io_redirect_fourcc <= 1u) { + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + } + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + 1u, + self->private_impl.f_io_redirect_fourcc, + 0u, + self->private_impl.f_io_redirect_pos, + 18446744073709551615u); + } + self->private_impl.f_io_redirect_fourcc = 1u; + + goto ok; + ok: + goto exit; + exit: + return status; +} + +// -------- func bmp.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bmp__decoder__history_retain_length( + const wuffs_bmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func bmp.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_bmp__decoder__workbuf_len( + const wuffs_bmp__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +// -------- func bmp.decoder.read_palette + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__read_palette( + wuffs_bmp__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_i = 0; + uint32_t v_argb = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_read_palette[0]; + if (coro_susp_point) { + v_i = self->private_data.s_read_palette[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_bitmap_info_len == 12u) { + while ((v_i < 256u) && (self->private_impl.f_padding >= 3u)) { + self->private_impl.f_padding -= 3u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { + t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); + iop_a_src += 3; + } else { + self->private_data.s_read_palette[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_read_palette[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 16) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_argb = t_0; + } + v_argb |= 4278190080u; + self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u))); + self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u))); + self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u))); + self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u))); + v_i += 1u; + } + } else { + while ((v_i < 256u) && (self->private_impl.f_padding >= 4u)) { + self->private_impl.f_padding -= 4u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_read_palette[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_read_palette[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + v_argb = t_1; + } + v_argb |= 4278190080u; + self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u))); + self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u))); + self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u))); + self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u))); + v_i += 1u; + } + } + while (v_i < 256u) { + self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u; + v_i += 1u; + } + + goto ok; + ok: + self->private_impl.p_read_palette[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_read_palette[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_read_palette[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bmp.decoder.process_masks + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bmp__decoder__process_masks( + wuffs_bmp__decoder* self) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_i = 0; + uint32_t v_mask = 0; + uint32_t v_n = 0; + + while (v_i < 4u) { + v_mask = self->private_impl.f_channel_masks[v_i]; + if (v_mask != 0u) { + v_n = 0u; + while ((v_mask & 1u) == 0u) { + v_n += 1u; + v_mask >>= 1u; + } + self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31u))); + v_n = 0u; + while ((v_mask & 1u) == 1u) { + v_n += 1u; + v_mask >>= 1u; + } + if ((v_mask != 0u) || (v_n > 32u)) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n)); + } else if (v_i != 3u) { + status = wuffs_base__make_status(wuffs_bmp__error__bad_header); + goto exit; + } + v_i += 1u; + } + + goto ok; + ok: + goto exit; + exit: + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) + +// ---------------- Status Codes Implementations + +const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)"; +const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)"; +const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header"; +const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length"; +const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum"; +const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header"; +const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections"; +const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input"; +const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization"; +const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state"; + +// ---------------- Private Consts + +static const uint8_t +WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 1, 2, 3, 4, 5, 5, 5, +}; + +static const uint32_t +WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021, + 638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013, + 1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509, + 1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757, + 2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653, + 3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357, + 3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109, + 4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269, + 881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826, + 311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010, + 2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778, + 1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418, + 2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130, + 2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922, + 3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050, + 3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242, + 1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195, + 1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299, + 622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531, + 51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555, + 4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915, + 3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211, + 3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763, + 2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779, + 1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660, + 2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964, + 295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308, + 932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548, + 3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204, + 3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804, + 2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596, + 2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188, +}; + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__do_transform_io( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__prepare_block( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__read_code_lengths( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__build_huffman_tree( + wuffs_bzip2__decoder* self, + uint32_t a_which); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__build_huffman_table( + wuffs_bzip2__decoder* self, + uint32_t a_which); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__invert_bwt( + wuffs_bzip2__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__flush_fast( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__flush_slow( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__decode_huffman_fast( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__decode_huffman_slow( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__io_transformer__func_ptrs +wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = { + (uint64_t(*)(const void*, + uint32_t))(&wuffs_bzip2__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_bzip2__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_bzip2__decoder__set_quirk), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_bzip2__decoder__initialize( + wuffs_bzip2__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = + wuffs_base__io_transformer__vtable_name; + self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = + (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer); + return wuffs_base__make_status(NULL); +} + +wuffs_bzip2__decoder* +wuffs_bzip2__decoder__alloc(void) { + wuffs_bzip2__decoder* x = + (wuffs_bzip2__decoder*)(calloc(sizeof(wuffs_bzip2__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_bzip2__decoder__initialize( + x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_bzip2__decoder(void) { + return sizeof(wuffs_bzip2__decoder); +} + +// ---------------- Function Implementations + +// -------- func bzip2.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bzip2__decoder__get_quirk( + const wuffs_bzip2__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func bzip2.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bzip2__decoder__set_quirk( + wuffs_bzip2__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (a_key == 1u) { + self->private_impl.f_ignore_checksum = (a_value > 0u); + return wuffs_base__make_status(NULL); + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func bzip2.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_bzip2__decoder__history_retain_length( + const wuffs_bzip2__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func bzip2.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_bzip2__decoder__workbuf_len( + const wuffs_bzip2__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +// -------- func bzip2.decoder.transform_io + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_bzip2__decoder__transform_io( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func bzip2.decoder.do_transform_io + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__do_transform_io( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_i = 0; + uint64_t v_tag = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint32_t v_final_checksum_want = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; + if (coro_susp_point) { + v_i = self->private_data.s_do_transform_io[0].v_i; + v_tag = self->private_data.s_do_transform_io[0].v_tag; + v_final_checksum_want = self->private_data.s_do_transform_io[0].v_final_checksum_want; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 66u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if (v_c != 90u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + if (v_c != 104u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if ((v_c < 49u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); + goto exit; + } + self->private_impl.f_max_incl_block_size = (((uint32_t)((v_c - 48u))) * 100000u); + while (true) { + v_tag = 0u; + v_i = 0u; + while (v_i < 48u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + v_tag <<= 1u; + v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31u))); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + if (v_tag == 25779555029136u) { + break; + } else if (v_tag != 54156738319193u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + status = wuffs_bzip2__decoder__prepare_block(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_block_size = 0u; + self->private_impl.f_decode_huffman_finished = false; + self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[0u] & 7u)]; + self->private_impl.f_decode_huffman_ticks = 50u; + self->private_impl.f_decode_huffman_section = 0u; + self->private_impl.f_decode_huffman_run_shift = 0u; + while ( ! self->private_impl.f_decode_huffman_finished) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } else if (self->private_impl.f_decode_huffman_finished) { + break; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + wuffs_bzip2__decoder__invert_bwt(self); + self->private_impl.f_block_checksum_have = 4294967295u; + if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12u); + self->private_impl.f_flush_repeat_count = 0u; + self->private_impl.f_flush_prev = 0u; + while (self->private_impl.f_block_size > 0u) { + wuffs_bzip2__decoder__flush_fast(self, a_dst); + if (self->private_impl.f_block_size <= 0u) { + break; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + status = wuffs_bzip2__decoder__flush_slow(self, a_dst); + if (status.repr) { + goto suspend; + } + } + self->private_impl.f_block_checksum_have ^= 4294967295u; + if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum); + goto exit; + } + self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31u) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1u)))); + } + v_final_checksum_want = 0u; + v_i = 0u; + while (v_i < 32u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + v_final_checksum_want <<= 1u; + v_final_checksum_want |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum); + goto exit; + } + + goto ok; + ok: + self->private_impl.p_do_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_transform_io[0].v_i = v_i; + self->private_data.s_do_transform_io[0].v_tag = v_tag; + self->private_data.s_do_transform_io[0].v_final_checksum_want = v_final_checksum_want; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bzip2.decoder.prepare_block + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__prepare_block( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + uint32_t v_selector = 0; + uint32_t v_sel_ff = 0; + uint8_t v_movee = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_prepare_block[0]; + if (coro_susp_point) { + v_i = self->private_data.s_prepare_block[0].v_i; + v_selector = self->private_data.s_prepare_block[0].v_selector; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_block_checksum_want = 0u; + v_i = 0u; + while (v_i < 32u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + self->private_impl.f_block_checksum_want <<= 1u; + self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + if ((self->private_impl.f_bits >> 31u) != 0u) { + status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization); + goto exit; + } + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + self->private_impl.f_original_pointer = 0u; + v_i = 0u; + while (v_i < 24u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + self->private_impl.f_original_pointer <<= 1u; + self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + v_i = 0u; + while (v_i < 256u) { + self->private_data.f_presence[v_i] = 0u; + v_i += 1u; + } + v_i = 0u; + while (v_i < 256u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + if ((self->private_impl.f_bits >> 31u) != 0u) { + self->private_data.f_presence[v_i] = 1u; + } + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 16u; + } + self->private_data.f_scratch = 0u; + v_i = 0u; + while (v_i < 256u) { + if (self->private_data.f_presence[v_i] == 0u) { + v_i += 16u; + continue; + } + while (true) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + self->private_data.f_scratch += (self->private_impl.f_bits >> 31u); + self->private_data.f_presence[(v_i & 255u)] = ((uint8_t)((self->private_impl.f_bits >> 31u))); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + if ((v_i & 15u) == 0u) { + break; + } + } + } + if ((self->private_data.f_scratch < 1u) || (256u < self->private_data.f_scratch)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2u); + self->private_data.f_scratch = 0u; + v_i = 0u; + while (v_i < 3u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + self->private_data.f_scratch <<= 1u; + self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + if ((self->private_data.f_scratch < 2u) || (6u < self->private_data.f_scratch)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + self->private_impl.f_num_huffman_codes = self->private_data.f_scratch; + self->private_data.f_scratch = 0u; + v_i = 0u; + while (v_i < 15u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_c = t_6; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + self->private_data.f_scratch <<= 1u; + self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + if ((self->private_data.f_scratch < 1u) || (18001u < self->private_data.f_scratch)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + self->private_impl.f_num_sections = self->private_data.f_scratch; + v_i = 0u; + while (v_i < self->private_impl.f_num_huffman_codes) { + self->private_data.f_mtft[v_i] = ((uint8_t)(v_i)); + v_i += 1u; + } + v_i = 0u; + while (v_i < self->private_impl.f_num_sections) { + v_selector = 0u; + while (true) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_7 = *iop_a_src++; + v_c = t_7; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + if ((self->private_impl.f_bits >> 31u) == 0u) { + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + break; + } + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_selector += 1u; + if (v_selector >= self->private_impl.f_num_huffman_codes) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + } + if (v_selector == 0u) { + self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0u]; + } else { + v_sel_ff = (v_selector & 255u); + v_movee = self->private_data.f_mtft[v_sel_ff]; + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff)); + self->private_data.f_mtft[0u] = v_movee; + self->private_data.f_huffman_selectors[v_i] = v_movee; + } + v_i += 1u; + } + v_i = 0u; + while (v_i < self->private_impl.f_num_huffman_codes) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_bzip2__decoder__read_code_lengths(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i); + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } + wuffs_bzip2__decoder__build_huffman_table(self, v_i); + v_i += 1u; + } + v_i = 0u; + v_j = 0u; + while (v_i < 256u) { + if (self->private_data.f_presence[v_i] != 0u) { + self->private_data.f_mtft[(v_j & 255u)] = ((uint8_t)(v_i)); + v_j += 1u; + } + v_i += 1u; + } + v_i = 0u; + while (v_i < 256u) { + self->private_data.f_letter_counts[v_i] = 0u; + v_i += 1u; + } + + goto ok; + ok: + self->private_impl.p_prepare_block[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_prepare_block[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_prepare_block[0].v_i = v_i; + self->private_data.s_prepare_block[0].v_selector = v_selector; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bzip2.decoder.read_code_lengths + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__read_code_lengths( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_i = 0; + uint32_t v_code_length = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_read_code_lengths[0]; + if (coro_susp_point) { + v_i = self->private_data.s_read_code_lengths[0].v_i; + v_code_length = self->private_data.s_read_code_lengths[0].v_code_length; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_code_lengths_bitmask = 0u; + v_i = 0u; + while (v_i < 5u) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + v_code_length <<= 1u; + v_code_length |= (self->private_impl.f_bits >> 31u); + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + v_i += 1u; + } + v_i = 0u; + while (v_i < self->private_impl.f_num_symbols) { + while (true) { + if ((v_code_length < 1u) || (20u < v_code_length)) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); + goto exit; + } + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + if ((self->private_impl.f_bits >> 31u) == 0u) { + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + break; + } + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + if ((self->private_impl.f_bits >> 31u) == 0u) { + v_code_length += 1u; + } else { + v_code_length -= 1u; + } + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + } + self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1u)) << (v_code_length & 31u)); + self->private_data.f_bwt[v_i] = v_code_length; + v_i += 1u; + } + + goto ok; + ok: + self->private_impl.p_read_code_lengths[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_read_code_lengths[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_read_code_lengths[0].v_i = v_i; + self->private_data.s_read_code_lengths[0].v_code_length = v_code_length; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bzip2.decoder.build_huffman_tree + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__build_huffman_tree( + wuffs_bzip2__decoder* self, + uint32_t a_which) { + uint32_t v_code_length = 0; + uint32_t v_symbol_index = 0; + uint32_t v_num_branch_nodes = 0; + uint32_t v_stack_height = 0; + uint32_t v_stack_values[21] = {0}; + uint32_t v_node_index = 0; + uint16_t v_leaf_value = 0; + + self->private_data.f_huffman_trees[a_which][0u][0u] = 0u; + self->private_data.f_huffman_trees[a_which][0u][1u] = 0u; + v_num_branch_nodes = 1u; + v_stack_height = 1u; + v_stack_values[0u] = 0u; + v_code_length = 1u; + while (v_code_length <= 20u) { + if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1u)) << v_code_length)) == 0u) { + v_code_length += 1u; + continue; + } + v_symbol_index = 0u; + while (v_symbol_index < self->private_impl.f_num_symbols) { + if (self->private_data.f_bwt[v_symbol_index] != v_code_length) { + v_symbol_index += 1u; + continue; + } + while (true) { + if (v_stack_height <= 0u) { + return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed); + } else if (v_stack_height >= v_code_length) { + break; + } + v_node_index = v_stack_values[(v_stack_height - 1u)]; + if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) { + self->private_data.f_huffman_trees[a_which][v_node_index][0u] = ((uint16_t)(v_num_branch_nodes)); + } else { + self->private_data.f_huffman_trees[a_which][v_node_index][1u] = ((uint16_t)(v_num_branch_nodes)); + } + if (v_num_branch_nodes >= 257u) { + return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed); + } + v_stack_values[v_stack_height] = v_num_branch_nodes; + self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0u] = 0u; + self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1u] = 0u; + v_num_branch_nodes += 1u; + v_stack_height += 1u; + } + v_node_index = v_stack_values[(v_stack_height - 1u)]; + if (v_symbol_index < 2u) { + v_leaf_value = ((uint16_t)((769u + v_symbol_index))); + } else if ((v_symbol_index + 1u) < self->private_impl.f_num_symbols) { + v_leaf_value = ((uint16_t)((511u + v_symbol_index))); + } else { + v_leaf_value = 768u; + } + if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) { + self->private_data.f_huffman_trees[a_which][v_node_index][0u] = v_leaf_value; + } else { + self->private_data.f_huffman_trees[a_which][v_node_index][1u] = v_leaf_value; + v_stack_height -= 1u; + while (v_stack_height > 0u) { + v_node_index = v_stack_values[(v_stack_height - 1u)]; + if (self->private_data.f_huffman_trees[a_which][v_node_index][1u] == 0u) { + break; + } + v_stack_height -= 1u; + } + } + v_symbol_index += 1u; + } + v_code_length += 1u; + } + if (v_stack_height != 0u) { + return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed); + } + return wuffs_base__make_status(NULL); +} + +// -------- func bzip2.decoder.build_huffman_table + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__build_huffman_table( + wuffs_bzip2__decoder* self, + uint32_t a_which) { + uint32_t v_i = 0; + uint32_t v_bits = 0; + uint16_t v_n_bits = 0; + uint16_t v_child = 0; + + while (v_i < 256u) { + v_bits = (v_i << 24u); + v_n_bits = 0u; + v_child = 0u; + while ((v_child < 257u) && (v_n_bits < 8u)) { + v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31u)]; + v_bits <<= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_n_bits += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)((v_child | (v_n_bits << 12u)))); + v_i += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func bzip2.decoder.invert_bwt + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__invert_bwt( + wuffs_bzip2__decoder* self) { + uint32_t v_i = 0; + uint32_t v_letter = 0; + uint32_t v_sum = 0; + uint32_t v_old_sum = 0; + + v_sum = 0u; + v_i = 0u; + while (v_i < 256u) { + v_old_sum = v_sum; + v_sum += self->private_data.f_letter_counts[v_i]; + self->private_data.f_letter_counts[v_i] = v_old_sum; + v_i += 1u; + } + v_i = 0u; + while (v_i < self->private_impl.f_block_size) { + v_letter = (self->private_data.f_bwt[v_i] & 255u); + self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575u)] |= (v_i << 12u); + self->private_data.f_letter_counts[v_letter] += 1u; + v_i += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func bzip2.decoder.flush_fast + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_bzip2__decoder__flush_fast( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst) { + uint32_t v_flush_pointer = 0; + uint32_t v_flush_repeat_count = 0; + uint8_t v_flush_prev = 0; + uint32_t v_block_checksum_have = 0; + uint32_t v_block_size = 0; + uint32_t v_entry = 0; + uint8_t v_curr = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + + v_flush_pointer = self->private_impl.f_flush_pointer; + v_flush_repeat_count = self->private_impl.f_flush_repeat_count; + v_flush_prev = self->private_impl.f_flush_prev; + v_block_checksum_have = self->private_impl.f_block_checksum_have; + v_block_size = self->private_impl.f_block_size; + while ((v_block_size > 0u) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255u)) { + if (v_flush_repeat_count < 4u) { + v_entry = self->private_data.f_bwt[v_flush_pointer]; + v_curr = ((uint8_t)(v_entry)); + v_flush_pointer = (v_entry >> 12u); + if (v_curr == v_flush_prev) { + v_flush_repeat_count += 1u; + } else { + v_flush_repeat_count = 1u; + } + v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u))); + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1); + v_flush_prev = v_curr; + v_block_size -= 1u; + } else { + v_entry = self->private_data.f_bwt[v_flush_pointer]; + v_curr = ((uint8_t)(v_entry)); + v_flush_pointer = (v_entry >> 12u); + v_flush_repeat_count = ((uint32_t)(v_curr)); + while (v_flush_repeat_count > 0u) { + v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u))); + if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1); + } + v_flush_repeat_count -= 1u; + } + v_flush_repeat_count = 0u; + v_flush_prev = v_curr; + v_block_size -= 1u; + } + } + self->private_impl.f_flush_pointer = v_flush_pointer; + self->private_impl.f_flush_repeat_count = v_flush_repeat_count; + self->private_impl.f_flush_prev = v_flush_prev; + self->private_impl.f_block_checksum_have = v_block_checksum_have; + if (v_block_size <= 900000u) { + self->private_impl.f_block_size = v_block_size; + } + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + + return wuffs_base__make_empty_struct(); +} + +// -------- func bzip2.decoder.flush_slow + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__flush_slow( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_dst) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_flush_pointer = 0; + uint32_t v_flush_repeat_count = 0; + uint8_t v_flush_prev = 0; + uint32_t v_block_checksum_have = 0; + uint32_t v_block_size = 0; + uint32_t v_entry = 0; + uint8_t v_curr = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + + uint32_t coro_susp_point = self->private_impl.p_flush_slow[0]; + if (coro_susp_point) { + v_flush_pointer = self->private_data.s_flush_slow[0].v_flush_pointer; + v_flush_repeat_count = self->private_data.s_flush_slow[0].v_flush_repeat_count; + v_flush_prev = self->private_data.s_flush_slow[0].v_flush_prev; + v_block_checksum_have = self->private_data.s_flush_slow[0].v_block_checksum_have; + v_block_size = self->private_data.s_flush_slow[0].v_block_size; + v_curr = self->private_data.s_flush_slow[0].v_curr; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + v_flush_pointer = self->private_impl.f_flush_pointer; + v_flush_repeat_count = self->private_impl.f_flush_repeat_count; + v_flush_prev = self->private_impl.f_flush_prev; + v_block_checksum_have = self->private_impl.f_block_checksum_have; + v_block_size = self->private_impl.f_block_size; + while ((v_block_size > 0u) && ! (self->private_impl.p_flush_slow[0] != 0)) { + if (v_flush_repeat_count < 4u) { + v_entry = self->private_data.f_bwt[v_flush_pointer]; + v_curr = ((uint8_t)(v_entry)); + v_flush_pointer = (v_entry >> 12u); + if (v_curr == v_flush_prev) { + v_flush_repeat_count += 1u; + } else { + v_flush_repeat_count = 1u; + } + v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u))); + self->private_data.s_flush_slow[0].scratch = v_curr; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (iop_a_dst == io2_a_dst) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + goto suspend; + } + *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch)); + v_flush_prev = v_curr; + v_block_size -= 1u; + } else { + v_entry = self->private_data.f_bwt[v_flush_pointer]; + v_curr = ((uint8_t)(v_entry)); + v_flush_pointer = (v_entry >> 12u); + v_flush_repeat_count = ((uint32_t)(v_curr)); + while (v_flush_repeat_count > 0u) { + v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u))); + self->private_data.s_flush_slow[0].scratch = v_flush_prev; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (iop_a_dst == io2_a_dst) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + goto suspend; + } + *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch)); + v_flush_repeat_count -= 1u; + } + v_flush_repeat_count = 0u; + v_flush_prev = v_curr; + v_block_size -= 1u; + } + } + self->private_impl.f_flush_pointer = v_flush_pointer; + self->private_impl.f_flush_repeat_count = v_flush_repeat_count; + self->private_impl.f_flush_prev = v_flush_prev; + self->private_impl.f_block_checksum_have = v_block_checksum_have; + if (v_block_size <= 900000u) { + self->private_impl.f_block_size = v_block_size; + } + + goto ok; + ok: + self->private_impl.p_flush_slow[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_flush_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_flush_slow[0].v_flush_pointer = v_flush_pointer; + self->private_data.s_flush_slow[0].v_flush_repeat_count = v_flush_repeat_count; + self->private_data.s_flush_slow[0].v_flush_prev = v_flush_prev; + self->private_data.s_flush_slow[0].v_block_checksum_have = v_block_checksum_have; + self->private_data.s_flush_slow[0].v_block_size = v_block_size; + self->private_data.s_flush_slow[0].v_curr = v_curr; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + + return status; +} + +// -------- func bzip2.decoder.decode_huffman_fast + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__decode_huffman_fast( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_block_size = 0; + uint8_t v_which = 0; + uint32_t v_ticks = 0; + uint32_t v_section = 0; + uint32_t v_run_shift = 0; + uint16_t v_table_entry = 0; + uint16_t v_child = 0; + uint32_t v_child_ff = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + uint32_t v_output = 0; + uint32_t v_run = 0; + uint32_t v_mtft0 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_bits = self->private_impl.f_bits; + v_n_bits = self->private_impl.f_n_bits; + v_block_size = self->private_impl.f_block_size; + v_which = self->private_impl.f_decode_huffman_which; + v_ticks = self->private_impl.f_decode_huffman_ticks; + v_section = self->private_impl.f_decode_huffman_section; + v_run_shift = self->private_impl.f_decode_huffman_run_shift; + while (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) { + if (v_ticks > 0u) { + v_ticks -= 1u; + } else { + v_ticks = 49u; + v_section += 1u; + if (v_section >= self->private_impl.f_num_sections) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections); + goto exit; + } + v_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(v_section & 32767u)] & 7u)]; + } + v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits); + iop_a_src += ((31u - v_n_bits) >> 3u); + v_n_bits |= 24u; + v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24u)]; + v_bits <<= (v_table_entry >> 12u); + v_n_bits -= ((uint32_t)((v_table_entry >> 12u))); + v_child = (v_table_entry & 1023u); + while (v_child < 257u) { + v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31u)]; + v_bits <<= 1u; + if (v_n_bits <= 0u) { + status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_n_bits -= 1u; + } + if (v_child < 768u) { + v_child_ff = ((uint32_t)((v_child & 255u))); + v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff])); + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff)); + self->private_data.f_mtft[0u] = ((uint8_t)(v_output)); + self->private_data.f_letter_counts[v_output] += 1u; + self->private_data.f_bwt[v_block_size] = v_output; + if (v_block_size >= self->private_impl.f_max_incl_block_size) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + v_block_size += 1u; + v_run_shift = 0u; + continue; + } else if (v_child == 768u) { + self->private_impl.f_decode_huffman_finished = true; + break; + } + if (v_run_shift >= 23u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + v_run = ((((uint32_t)(v_child)) & 3u) << v_run_shift); + v_run_shift += 1u; + v_i = v_block_size; + v_j = (v_run + v_block_size); + if (v_j > self->private_impl.f_max_incl_block_size) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + v_block_size = v_j; + v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u])); + self->private_data.f_letter_counts[v_mtft0] += v_run; + while (v_i < v_j) { + self->private_data.f_bwt[v_i] = v_mtft0; + v_i += 1u; + } + } + self->private_impl.f_bits = v_bits; + self->private_impl.f_n_bits = v_n_bits; + self->private_impl.f_block_size = v_block_size; + self->private_impl.f_decode_huffman_which = v_which; + self->private_impl.f_decode_huffman_ticks = v_ticks; + self->private_impl.f_decode_huffman_section = v_section; + self->private_impl.f_decode_huffman_run_shift = v_run_shift; + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func bzip2.decoder.decode_huffman_slow + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_bzip2__decoder__decode_huffman_slow( + wuffs_bzip2__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_node_index = 0; + uint16_t v_child = 0; + uint32_t v_child_ff = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + uint32_t v_output = 0; + uint32_t v_run = 0; + uint32_t v_mtft0 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0]; + if (coro_susp_point) { + v_node_index = self->private_data.s_decode_huffman_slow[0].v_node_index; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) { + if (self->private_impl.f_decode_huffman_ticks > 0u) { + self->private_impl.f_decode_huffman_ticks -= 1u; + } else { + self->private_impl.f_decode_huffman_ticks = 49u; + self->private_impl.f_decode_huffman_section += 1u; + if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections); + goto exit; + } + self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767u)] & 7u)]; + } + v_node_index = 0u; + while (true) { + if (self->private_impl.f_n_bits <= 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u); + self->private_impl.f_n_bits = 8u; + } + v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31u)]; + self->private_impl.f_bits <<= 1u; + self->private_impl.f_n_bits -= 1u; + if (v_child < 257u) { + v_node_index = ((uint32_t)(v_child)); + continue; + } else if (v_child < 768u) { + v_child_ff = ((uint32_t)((v_child & 255u))); + v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff])); + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff)); + self->private_data.f_mtft[0u] = ((uint8_t)(v_output)); + self->private_data.f_letter_counts[v_output] += 1u; + self->private_data.f_bwt[self->private_impl.f_block_size] = v_output; + if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + self->private_impl.f_block_size += 1u; + self->private_impl.f_decode_huffman_run_shift = 0u; + break; + } else if (v_child == 768u) { + self->private_impl.f_decode_huffman_finished = true; + goto label__outer__break; + } + if (self->private_impl.f_decode_huffman_run_shift >= 23u) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + v_run = ((((uint32_t)(v_child)) & 3u) << self->private_impl.f_decode_huffman_run_shift); + self->private_impl.f_decode_huffman_run_shift += 1u; + v_i = self->private_impl.f_block_size; + v_j = (v_run + self->private_impl.f_block_size); + if (v_j > self->private_impl.f_max_incl_block_size) { + status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); + goto exit; + } + self->private_impl.f_block_size = v_j; + v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u])); + self->private_data.f_letter_counts[v_mtft0] += v_run; + while (v_i < v_j) { + self->private_data.f_bwt[v_i] = v_mtft0; + v_i += 1u; + } + break; + } + } + label__outer__break:; + + goto ok; + ok: + self->private_impl.p_decode_huffman_slow[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_huffman_slow[0].v_node_index = v_node_index; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) + +// ---------------- Status Codes Implementations + +const char wuffs_cbor__error__bad_input[] = "#cbor: bad input"; +const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth"; +const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O"; +const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length"; + +// ---------------- Private Consts + +static const uint32_t +WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = { + 8388612, 8388616, 8388610, 8388609, +}; + +static const uint8_t +WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 2, 3, 5, 9, 0, 0, 0, 1, +}; + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +// ---------------- VTables + +const wuffs_base__token_decoder__func_ptrs +wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__token_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_cbor__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_cbor__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_cbor__decoder__set_quirk), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_cbor__decoder__initialize( + wuffs_cbor__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name = + wuffs_base__token_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers = + (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_cbor__decoder* +wuffs_cbor__decoder__alloc(void) { + wuffs_cbor__decoder* x = + (wuffs_cbor__decoder*)(calloc(sizeof(wuffs_cbor__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_cbor__decoder__initialize( + x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_cbor__decoder(void) { + return sizeof(wuffs_cbor__decoder); +} + +// ---------------- Function Implementations + +// -------- func cbor.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_cbor__decoder__get_quirk( + const wuffs_cbor__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func cbor.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_cbor__decoder__set_quirk( + wuffs_cbor__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func cbor.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_cbor__decoder__history_retain_length( + const wuffs_cbor__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func cbor.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_cbor__decoder__workbuf_len( + const wuffs_cbor__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__empty_range_ii_u64(); +} + +// -------- func cbor.decoder.decode_tokens + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_cbor__decoder__decode_tokens( + wuffs_cbor__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_string_length = 0; + uint64_t v_n64 = 0; + uint32_t v_depth = 0; + uint32_t v_stack_byte = 0; + uint32_t v_stack_bit = 0; + uint32_t v_stack_val = 0; + uint32_t v_token_length = 0; + uint32_t v_vminor = 0; + uint32_t v_vminor_alt = 0; + uint32_t v_continued = 0; + uint8_t v_c = 0; + uint8_t v_c_major = 0; + uint8_t v_c_minor = 0; + bool v_tagged = false; + uint8_t v_indefinite_string_major_type = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0]; + if (coro_susp_point) { + v_string_length = self->private_data.s_decode_tokens[0].v_string_length; + v_depth = self->private_data.s_decode_tokens[0].v_depth; + v_tagged = self->private_data.s_decode_tokens[0].v_tagged; + v_indefinite_string_major_type = self->private_data.s_decode_tokens[0].v_indefinite_string_major_type; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_end_of_data) { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + label__outer__continue:; + while (true) { + while (true) { + do { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + goto label__outer__continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + goto label__outer__continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if ((v_indefinite_string_major_type != 0u) && (v_indefinite_string_major_type != (v_c >> 5u))) { + if (v_c != 255u) { + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + v_vminor = 4194560u; + if (v_indefinite_string_major_type == 3u) { + v_vminor |= 19u; + } + v_indefinite_string_major_type = 0u; + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + iop_a_src += 1u; + v_c_major = ((uint8_t)((v_c >> 5u))); + v_c_minor = (v_c & 31u); + if (v_c_minor < 24u) { + v_string_length = ((uint64_t)(v_c_minor)); + } else { + while (true) { + if (v_c_minor == 24u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 1u) { + v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); + iop_a_src += 1u; + break; + } + } else if (v_c_minor == 25u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 2u) { + v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2u; + break; + } + } else if (v_c_minor == 26u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) { + v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4u; + break; + } + } else if (v_c_minor == 27u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 8u) { + v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src); + iop_a_src += 8u; + break; + } + } else { + v_string_length = 0u; + break; + } + if (iop_a_src > io1_a_src) { + iop_a_src--; + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + goto label__outer__continue; + } + status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); + goto exit; + } + } + if (v_c_major == 0u) { + if (v_c_minor < 26u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((14680064u | ((uint32_t)((v_string_length & 65535u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor < 28u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((14680064u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + *iop_a_dst++ = wuffs_base__make_token( + (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + } else if (v_c_major == 1u) { + if (v_c_minor < 26u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length & 65535u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor < 28u) { + if (v_string_length < 9223372036854775808u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length >> 46u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + *iop_a_dst++ = wuffs_base__make_token( + (~((18446744073709551615u - v_string_length) & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } else { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | + (((uint64_t)(16777216u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + goto label__goto_parsed_a_leaf_value__break; + } + } else if (v_c_major == 2u) { + if (v_c_minor < 28u) { + if (v_string_length == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } else if (v_c_minor == 31u) { + if (v_indefinite_string_major_type != 0u) { + break; + } + v_indefinite_string_major_type = 2u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__outer__continue; + } else { + break; + } + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + continue; + } + v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src))); + v_token_length = ((uint32_t)((v_n64 & 65535u))); + if (v_n64 > 65535u) { + v_token_length = 65535u; + } else if (v_token_length <= 0u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) { + status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length); + goto exit; + } + v_string_length -= ((uint64_t)(v_token_length)); + v_continued = 0u; + if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) { + v_continued = 1u; + } + iop_a_src += v_token_length; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194816u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (v_string_length > 0u) { + continue; + } else if (v_indefinite_string_major_type > 0u) { + goto label__outer__continue; + } + goto label__goto_parsed_a_leaf_value__break; + } + } else if (v_c_major == 3u) { + if (v_c_minor < 28u) { + if (v_string_length == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } else if (v_c_minor == 31u) { + if (v_indefinite_string_major_type != 0u) { + break; + } + v_indefinite_string_major_type = 3u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__outer__continue; + } else { + break; + } + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + continue; + } + v_n64 = wuffs_base__u64__min(v_string_length, 65535u); + v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src, + ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64)))))); + v_token_length = ((uint32_t)((v_n64 & 65535u))); + if (v_token_length <= 0u) { + if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) { + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) { + status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length); + goto exit; + } + v_string_length -= ((uint64_t)(v_token_length)); + v_continued = 0u; + if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) { + v_continued = 1u; + } + iop_a_src += v_token_length; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (v_string_length > 0u) { + continue; + } else if (v_indefinite_string_major_type > 0u) { + goto label__outer__continue; + } + goto label__goto_parsed_a_leaf_value__break; + } + } else if (v_c_major == 4u) { + if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) { + break; + } else if (v_depth >= 1024u) { + v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])); + while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) { + iop_a_src--; + v_token_length -= 1u; + } + status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth); + goto exit; + } + v_vminor = 2105361u; + v_vminor_alt = 2101282u; + if (v_depth > 0u) { + v_stack_byte = ((v_depth - 1u) / 16u); + v_stack_bit = (((v_depth - 1u) & 15u) * 2u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + v_vminor = 2105377u; + v_vminor_alt = 2105378u; + } else { + v_vminor = 2105409u; + v_vminor_alt = 2113570u; + } + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (v_c_minor == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + v_stack_byte = (v_depth / 16u); + v_stack_bit = ((v_depth & 15u) * 2u); + self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(3u)) << v_stack_bit)); + self->private_data.f_container_num_remaining[v_depth] = v_string_length; + v_depth += 1u; + v_tagged = false; + goto label__outer__continue; + } else if (v_c_major == 5u) { + if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) { + break; + } else if (v_depth >= 1024u) { + v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])); + while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) { + iop_a_src--; + v_token_length -= 1u; + } + status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth); + goto exit; + } + v_vminor = 2113553u; + v_vminor_alt = 2101314u; + if (v_depth > 0u) { + v_stack_byte = ((v_depth - 1u) / 16u); + v_stack_bit = (((v_depth - 1u) & 15u) * 2u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + v_vminor = 2113569u; + v_vminor_alt = 2105410u; + } else { + v_vminor = 2113601u; + v_vminor_alt = 2113602u; + } + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (v_c_minor == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + v_stack_byte = (v_depth / 16u); + v_stack_bit = ((v_depth & 15u) * 2u); + self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3u)) << v_stack_bit); + self->private_data.f_container_num_remaining[v_depth] = v_string_length; + v_depth += 1u; + v_tagged = false; + goto label__outer__continue; + } else if (v_c_major == 6u) { + if (v_c_minor >= 28u) { + break; + } + if (v_string_length < 262144u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | + (((uint64_t)((4194304u | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } else { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | + (((uint64_t)((4194304u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + *iop_a_dst++ = wuffs_base__make_token( + (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + v_tagged = true; + goto label__outer__continue; + } else if (v_c_major == 7u) { + if (v_c_minor < 20u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | + (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor < 24u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(WUFFS_CBOR__LITERALS[(v_c_minor & 3u)])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor == 24u) { + if (v_string_length < 24u) { + if ( ! (iop_a_src > io1_a_src)) { + status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); + goto exit; + } + iop_a_src--; + break; + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | + (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor < 28u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(10490113u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } else if (v_c_minor == 31u) { + if (v_tagged || (v_depth <= 0u)) { + break; + } + v_depth -= 1u; + if (self->private_data.f_container_num_remaining[v_depth] != 0u) { + break; + } + v_stack_byte = (v_depth / 16u); + v_stack_bit = ((v_depth & 15u) * 2u); + v_stack_val = (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit)); + if (v_stack_val == 1u) { + break; + } + if (v_stack_val != 3u) { + v_vminor_alt = 2097186u; + } else { + v_vminor_alt = 2097218u; + } + if (v_depth <= 0u) { + v_vminor_alt |= 4096u; + } else { + v_stack_byte = ((v_depth - 1u) / 16u); + v_stack_bit = (((v_depth - 1u) & 15u) * 2u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + v_vminor_alt |= 8192u; + } else { + v_vminor_alt |= 16384u; + } + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__goto_parsed_a_leaf_value__break; + } + } + } while (0); + if (iop_a_src > io1_a_src) { + iop_a_src--; + status = wuffs_base__make_status(wuffs_cbor__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); + goto exit; + } + label__goto_parsed_a_leaf_value__break:; + v_tagged = false; + while (v_depth > 0u) { + v_stack_byte = ((v_depth - 1u) / 16u); + v_stack_bit = (((v_depth - 1u) & 15u) * 2u); + self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1u)) << (v_stack_bit + 1u)); + if (1u == (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) { + goto label__outer__continue; + } + if (self->private_data.f_container_num_remaining[(v_depth - 1u)] <= 0u) { + goto label__outer__continue; + } + self->private_data.f_container_num_remaining[(v_depth - 1u)] -= 1u; + if (self->private_data.f_container_num_remaining[(v_depth - 1u)] > 0u) { + goto label__outer__continue; + } + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + continue; + } + v_depth -= 1u; + v_stack_byte = (v_depth / 16u); + v_stack_bit = ((v_depth & 15u) * 2u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + v_vminor_alt = 2097186u; + } else { + v_vminor_alt = 2097218u; + } + if (v_depth <= 0u) { + v_vminor_alt |= 4096u; + } else { + v_stack_byte = ((v_depth - 1u) / 16u); + v_stack_bit = (((v_depth - 1u) & 15u) * 2u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + v_vminor_alt |= 8192u; + } else { + v_vminor_alt |= 16384u; + } + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + break; + } + self->private_impl.f_end_of_data = true; + + ok: + self->private_impl.p_decode_tokens[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + self->private_data.s_decode_tokens[0].v_string_length = v_string_length; + self->private_data.s_decode_tokens[0].v_depth = v_depth; + self->private_data.s_decode_tokens[0].v_tagged = v_tagged; + self->private_data.s_decode_tokens[0].v_indefinite_string_major_type = v_indefinite_string_major_type; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) + +// ---------------- Status Codes Implementations + +// ---------------- Private Consts + +static const uint32_t +WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = { + { + 0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035, + 249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049, + 498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639, + 325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317, + 997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443, + 901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665, + 651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303, + 671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565, + 1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059, + 2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297, + 1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223, + 1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405, + 1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995, + 1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649, + 1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015, + 1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989, + 3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523, + 3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377, + 4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879, + 4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637, + 3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859, + 3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161, + 3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815, + 3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221, + 2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371, + 2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881, + 2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567, + 2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701, + 2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035, + 2932959818, 3654703836, 1088359270, 936918000, 2847714899, 3736837829, 1202900863, 817233897, + 3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431, + 3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117, + }, { + 0, 421212481, 842424962, 724390851, 1684849924, 2105013317, 1448781702, 1329698503, + 3369699848, 3519200073, 4210026634, 3824474571, 2897563404, 3048111693, 2659397006, 2274893007, + 1254232657, 1406739216, 2029285587, 1643069842, 783210325, 934667796, 479770071, 92505238, + 2182846553, 2600511768, 2955803355, 2838940570, 3866582365, 4285295644, 3561045983, 3445231262, + 2508465314, 2359236067, 2813478432, 3198777185, 4058571174, 3908292839, 3286139684, 3670389349, + 1566420650, 1145479147, 1869335592, 1987116393, 959540142, 539646703, 185010476, 303839341, + 3745920755, 3327985586, 3983561841, 4100678960, 3140154359, 2721170102, 2300350837, 2416418868, + 396344571, 243568058, 631889529, 1018359608, 1945336319, 1793607870, 1103436669, 1490954812, + 4034481925, 3915546180, 3259968903, 3679722694, 2484439553, 2366552896, 2787371139, 3208174018, + 950060301, 565965900, 177645455, 328046286, 1556873225, 1171730760, 1861902987, 2011255754, + 3132841300, 2745199637, 2290958294, 2442530455, 3738671184, 3352078609, 3974232786, 4126854035, + 1919080284, 1803150877, 1079293406, 1498383519, 370020952, 253043481, 607678682, 1025720731, + 1711106983, 2095471334, 1472923941, 1322268772, 26324643, 411738082, 866634785, 717028704, + 2904875439, 3024081134, 2668790573, 2248782444, 3376948395, 3495106026, 4219356713, 3798300520, + 792689142, 908347575, 487136116, 68299317, 1263779058, 1380486579, 2036719216, 1618931505, + 3890672638, 4278043327, 3587215740, 3435896893, 2206873338, 2593195963, 2981909624, 2829542713, + 998479947, 580430090, 162921161, 279890824, 1609522511, 1190423566, 1842954189, 1958874764, + 4082766403, 3930137346, 3245109441, 3631694208, 2536953671, 2385372678, 2768287173, 3155920004, + 1900120602, 1750776667, 1131931800, 1517083097, 355290910, 204897887, 656092572, 1040194781, + 3113746450, 2692952403, 2343461520, 2461357009, 3723805974, 3304059991, 4022511508, 4141455061, + 2919742697, 3072101800, 2620513899, 2234183466, 3396041197, 3547351212, 4166851439, 3779471918, + 1725839073, 2143618976, 1424512099, 1307796770, 45282277, 464110244, 813994343, 698327078, + 3838160568, 4259225593, 3606301754, 3488152955, 2158586812, 2578602749, 2996767038, 2877569151, + 740041904, 889656817, 506086962, 120682355, 1215357364, 1366020341, 2051441462, 1667084919, + 3422213966, 3538019855, 4190942668, 3772220557, 2945847882, 3062702859, 2644537544, 2226864521, + 52649286, 439905287, 823476164, 672009861, 1733269570, 2119477507, 1434057408, 1281543041, + 2167981343, 2552493150, 3004082077, 2853541596, 3847487515, 4233048410, 3613549209, 3464057816, + 1239502615, 1358593622, 2077699477, 1657543892, 764250643, 882293586, 532408465, 111204816, + 1585378284, 1197851309, 1816695150, 1968414767, 974272232, 587794345, 136598634, 289367339, + 2527558116, 2411481253, 2760973158, 3179948583, 4073438432, 3956313505, 3237863010, 3655790371, + 347922877, 229101820, 646611775, 1066513022, 1892689081, 1774917112, 1122387515, 1543337850, + 3697634229, 3313392372, 3998419255, 4148705398, 3087642289, 2702352368, 2319436851, 2468674930, + }, { + 0, 29518391, 59036782, 38190681, 118073564, 114017003, 76381362, 89069189, + 236147128, 265370511, 228034006, 206958561, 152762724, 148411219, 178138378, 190596925, + 472294256, 501532999, 530741022, 509615401, 456068012, 451764635, 413917122, 426358261, + 305525448, 334993663, 296822438, 275991697, 356276756, 352202787, 381193850, 393929805, + 944588512, 965684439, 1003065998, 973863097, 1061482044, 1049003019, 1019230802, 1023561829, + 912136024, 933002607, 903529270, 874031361, 827834244, 815125939, 852716522, 856752605, + 611050896, 631869351, 669987326, 640506825, 593644876, 580921211, 551983394, 556069653, + 712553512, 733666847, 704405574, 675154545, 762387700, 749958851, 787859610, 792175277, + 1889177024, 1901651959, 1931368878, 1927033753, 2006131996, 1985040171, 1947726194, 1976933189, + 2122964088, 2135668303, 2098006038, 2093965857, 2038461604, 2017599123, 2047123658, 2076625661, + 1824272048, 1836991623, 1866005214, 1861914857, 1807058540, 1786244187, 1748062722, 1777547317, + 1655668488, 1668093247, 1630251878, 1625932113, 1705433044, 1684323811, 1713505210, 1742760333, + 1222101792, 1226154263, 1263738702, 1251046777, 1339974652, 1310460363, 1281013650, 1301863845, + 1187289752, 1191637167, 1161842422, 1149379777, 1103966788, 1074747507, 1112139306, 1133218845, + 1425107024, 1429406311, 1467333694, 1454888457, 1408811148, 1379576507, 1350309090, 1371438805, + 1524775400, 1528845279, 1499917702, 1487177649, 1575719220, 1546255107, 1584350554, 1605185389, + 3778354048, 3774312887, 3803303918, 3816007129, 3862737756, 3892238699, 3854067506, 3833203973, + 4012263992, 4007927823, 3970080342, 3982554209, 3895452388, 3924658387, 3953866378, 3932773565, + 4245928176, 4241609415, 4271336606, 4283762345, 4196012076, 4225268251, 4187931714, 4166823541, + 4076923208, 4072833919, 4035198246, 4047918865, 4094247316, 4123732899, 4153251322, 4132437965, + 3648544096, 3636082519, 3673983246, 3678331705, 3732010428, 3753090955, 3723829714, 3694611429, + 3614117080, 3601426159, 3572488374, 3576541825, 3496125444, 3516976691, 3555094634, 3525581405, + 3311336976, 3298595879, 3336186494, 3340255305, 3260503756, 3281337595, 3251864226, 3222399125, + 3410866088, 3398419871, 3368647622, 3372945905, 3427010420, 3448139075, 3485520666, 3456284973, + 2444203584, 2423127159, 2452308526, 2481530905, 2527477404, 2539934891, 2502093554, 2497740997, + 2679949304, 2659102159, 2620920726, 2650438049, 2562027300, 2574714131, 2603727690, 2599670141, + 2374579504, 2353749767, 2383274334, 2412743529, 2323684844, 2336421851, 2298759554, 2294686645, + 2207933576, 2186809023, 2149495014, 2178734801, 2224278612, 2236720739, 2266437690, 2262135309, + 2850214048, 2820717207, 2858812622, 2879680249, 2934667388, 2938704459, 2909776914, 2897069605, + 2817622296, 2788420399, 2759153014, 2780249921, 2700618180, 2704950259, 2742877610, 2730399645, + 3049550800, 3020298727, 3057690558, 3078802825, 2999835404, 3004150075, 2974355298, 2961925461, + 3151438440, 3121956959, 3092510214, 3113327665, 3168701108, 3172786307, 3210370778, 3197646061, + }, { + 0, 3099354981, 2852767883, 313896942, 2405603159, 937357362, 627793884, 2648127673, + 3316918511, 2097696650, 1874714724, 3607201537, 1255587768, 4067088605, 3772741427, 1482887254, + 1343838111, 3903140090, 4195393300, 1118632049, 3749429448, 1741137837, 1970407491, 3452858150, + 2511175536, 756094997, 1067759611, 2266550430, 449832999, 2725482306, 2965774508, 142231497, + 2687676222, 412010587, 171665333, 2995192016, 793786473, 2548850444, 2237264098, 1038456711, + 1703315409, 3711623348, 3482275674, 1999841343, 3940814982, 1381529571, 1089329165, 4166106984, + 4029413537, 1217896388, 1512189994, 3802027855, 2135519222, 3354724499, 3577784189, 1845280792, + 899665998, 2367928107, 2677414085, 657096608, 3137160985, 37822588, 284462994, 2823350519, + 2601801789, 598228824, 824021174, 2309093331, 343330666, 2898962447, 3195996129, 113467524, + 1587572946, 3860600759, 4104763481, 1276501820, 3519211397, 1769898208, 2076913422, 3279374443, + 3406630818, 1941006535, 1627703081, 3652755532, 1148164341, 4241751952, 3999682686, 1457141531, + 247015245, 3053797416, 2763059142, 470583459, 2178658330, 963106687, 735213713, 2473467892, + 992409347, 2207944806, 2435792776, 697522413, 3024379988, 217581361, 508405983, 2800865210, + 4271038444, 1177467017, 1419450215, 3962007554, 1911572667, 3377213406, 3690561584, 1665525589, + 1799331996, 3548628985, 3241568279, 2039091058, 3831314379, 1558270126, 1314193216, 4142438437, + 2928380019, 372764438, 75645176, 3158189981, 568925988, 2572515393, 2346768303, 861712586, + 3982079547, 1441124702, 1196457648, 4293663189, 1648042348, 3666298377, 3358779879, 1888390786, + 686661332, 2421291441, 2196002399, 978858298, 2811169155, 523464422, 226935048, 3040519789, + 3175145892, 100435649, 390670639, 2952089162, 841119475, 2325614998, 2553003640, 546822429, + 2029308235, 3225988654, 3539796416, 1782671013, 4153826844, 1328167289, 1570739863, 3844338162, + 1298864389, 4124540512, 3882013070, 1608431339, 3255406162, 2058742071, 1744848601, 3501990332, + 2296328682, 811816591, 584513889, 2590678532, 129869501, 3204563416, 2914283062, 352848211, + 494030490, 2781751807, 3078325777, 264757620, 2450577869, 715964072, 941166918, 2158327331, + 3636881013, 1618608400, 1926213374, 3396585883, 1470427426, 4011365959, 4255988137, 1158766284, + 1984818694, 3471935843, 3695453837, 1693991400, 4180638033, 1100160564, 1395044826, 3952793279, + 3019491049, 189112716, 435162722, 2706139399, 1016811966, 2217162459, 2526189877, 774831696, + 643086745, 2666061564, 2354934034, 887166583, 2838900430, 294275499, 54519365, 3145957664, + 3823145334, 1532818963, 1240029693, 4048895640, 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1061030867, 776167850, 2545465922, + 3274734047, 2060165687, 1807140942, 3528266662, 1229724860, 4038575956, 3788156205, 1479636677, + 1222322711, 4045468159, 3764231046, 1504067694, 3265744756, 2069664924, 1780612837, 3554288909, + 2270357136, 1051278712, 802445057, 2519698665, 221152243, 3033880603, 2779263586, 475261322, + }, { + 0, 2926088593, 2275419491, 701019378, 3560000647, 2052709654, 1402038756, 4261017717, + 1930665807, 3715829470, 4105419308, 1524313021, 2804077512, 155861593, 545453739, 2397726522, + 3861331614, 1213181711, 1636244477, 3488582252, 840331801, 2625561480, 3048626042, 467584747, + 2503254481, 995897408, 311723186, 3170637091, 1090907478, 4016929991, 3332753461, 1758288292, + 390036349, 3109546732, 2426363422, 1056427919, 3272488954, 1835443819, 1152258713, 3938878216, + 1680663602, 3393484195, 3817652561, 1306808512, 2954733749, 510998820, 935169494, 2580880455, + 4044899811, 1601229938, 1991794816, 3637571857, 623446372, 2336332021, 2726898695, 216120726, + 2181814956, 744704829, 95158223, 2881711710, 1446680107, 4166125498, 3516576584, 2146575065, + 780072698, 2148951915, 2849952665, 129384968, 4199529085, 1411853292, 2112855838, 3548843663, + 1567451573, 4077254692, 3670887638, 1957027143, 2304517426, 657765539, 251396177, 2694091200, + 3361327204, 1714510325, 1341779207, 3784408214, 476611811, 2986349938, 2613617024, 899690513, + 3142211371, 354600634, 1021997640, 2458051545, 1870338988, 3239283261, 3906682575, 1186180958, + 960597383, 2536053782, 3202459876, 277428597, 3983589632, 1125666961, 1792074851, 3300423154, + 1246892744, 3829039961, 3455203243, 1671079482, 2657312335, 806080478, 432241452, 3081497277, + 3748049689, 1896751752, 1489409658, 4138600427, 190316446, 2772397583, 2365053693, 580864876, + 2893360214, 35503559, 735381813, 2243795108, 2017747153, 3593269568, 4293150130, 1368183843, + 1560145396, 4069882981, 3680356503, 1966430470, 2295112051, 648294626, 258769936, 2701399425, + 804156091, 2173100842, 2823706584, 103204425, 4225711676, 1438101421, 2088704863, 3524758222, + 3134903146, 347226875, 1031468553, 2467456920, 1860935661, 3229814396, 3914054286, 1193487135, + 3385412645, 1738661300, 1315531078, 3758225623, 502792354, 3012596019, 2589468097, 875607120, + 1271043721, 3853125400, 3429020650, 1644831355, 2683558414, 832261023, 408158061, 3057348348, + 953223622, 2528745559, 3211865253, 286899508, 3974120769, 1116263632, 1799381026, 3307794867, + 2917509143, 59586950, 709201268, 2217549029, 2043995280, 3619452161, 4269064691, 1344032866, + 3740677976, 1889445577, 1498812987, 4148069290, 180845535, 2762992206, 2372361916, 588238637, + 1921194766, 3706423967, 4112727661, 1531686908, 2796705673, 148555288, 554857194, 2407195515, + 26248257, 2952271312, 2251333922, 676868275, 3584149702, 2076793175, 1375858085, 4234771508, + 2493785488, 986493953, 319029491, 3178008930, 1083533591, 4009621638, 3342158964, 1767759333, + 3887577823, 1239362382, 1612160956, 3464433197, 864482904, 2649647049, 3022443323, 441336490, + 1706844275, 3419730402, 3793503504, 1282724993, 2978819316, 535149925, 908921239, 2554697734, + 380632892, 3100077741, 2433735263, 1063734222, 3265180603, 1828069930, 1161729752, 3948283721, + 2207997677, 770953084, 71007118, 2857626143, 1470763626, 4190274555, 3490330377, 2120394392, + 4035494306, 1591758899, 1999168705, 3644880208, 616140069, 2328960180, 2736367686, 225524183, + }, +}; + +static const uint8_t +WUFFS_CRC32__IEEE_X86_SSE42_K1K2[16] WUFFS_BASE__POTENTIALLY_UNUSED = { + 212, 43, 68, 84, 1, 0, 0, 0, + 150, 21, 228, 198, 1, 0, 0, 0, +}; + +static const uint8_t +WUFFS_CRC32__IEEE_X86_SSE42_K3K4[16] WUFFS_BASE__POTENTIALLY_UNUSED = { + 208, 151, 25, 117, 1, 0, 0, 0, + 158, 0, 170, 204, 0, 0, 0, 0, +}; + +static const uint8_t +WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ[16] WUFFS_BASE__POTENTIALLY_UNUSED = { + 36, 97, 205, 99, 1, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, +}; + +static const uint8_t +WUFFS_CRC32__IEEE_X86_SSE42_PXMU[16] WUFFS_BASE__POTENTIALLY_UNUSED = { + 65, 6, 113, 219, 1, 0, 0, 0, + 65, 22, 1, 247, 1, 0, 0, 0, +}; + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up__choosy_default( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_arm_crc32( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_x86_avx2( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_x86_sse42( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +// ---------------- VTables + +const wuffs_base__hasher_u32__func_ptrs +wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = { + (uint32_t(*)(const void*))(&wuffs_crc32__ieee_hasher__checksum_u32), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_crc32__ieee_hasher__get_quirk), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk), + (wuffs_base__empty_struct(*)(void*, + wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update), + (uint32_t(*)(void*, + wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_crc32__ieee_hasher__initialize( + wuffs_crc32__ieee_hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default; + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name = + wuffs_base__hasher_u32__vtable_name; + self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers = + (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32); + return wuffs_base__make_status(NULL); +} + +wuffs_crc32__ieee_hasher* +wuffs_crc32__ieee_hasher__alloc(void) { + wuffs_crc32__ieee_hasher* x = + (wuffs_crc32__ieee_hasher*)(calloc(sizeof(wuffs_crc32__ieee_hasher), 1)); + if (!x) { + return NULL; + } + if (wuffs_crc32__ieee_hasher__initialize( + x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_crc32__ieee_hasher(void) { + return sizeof(wuffs_crc32__ieee_hasher); +} + +// ---------------- Function Implementations + +// -------- func crc32.ieee_hasher.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_crc32__ieee_hasher__get_quirk( + const wuffs_crc32__ieee_hasher* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func crc32.ieee_hasher.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_crc32__ieee_hasher__set_quirk( + wuffs_crc32__ieee_hasher* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func crc32.ieee_hasher.update + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__update( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if (self->private_impl.f_state == 0u) { + self->private_impl.choosy_up = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) + wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) + wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_crc32__ieee_hasher__up_x86_avx2 : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 : +#endif + self->private_impl.choosy_up); + } + wuffs_crc32__ieee_hasher__up(self, a_x); + return wuffs_base__make_empty_struct(); +} + +// -------- func crc32.ieee_hasher.update_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_crc32__ieee_hasher__update_u32( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + wuffs_crc32__ieee_hasher__update(self, a_x); + return self->private_impl.f_state; +} + +// -------- func crc32.ieee_hasher.up + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + return (*self->private_impl.choosy_up)(self, a_x); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up__choosy_default( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s = 0; + wuffs_base__slice_u8 v_p = {0}; + + v_s = (4294967295u ^ self->private_impl.f_state); + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 16; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); + while (v_p.ptr < i_end0_p) { + v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) | + (((uint32_t)(v_p.ptr[1u])) << 8u) | + (((uint32_t)(v_p.ptr[2u])) << 16u) | + (((uint32_t)(v_p.ptr[3u])) << 24u)); + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^ + WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^ + WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^ + WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^ + WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^ + WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^ + WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^ + WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^ + WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^ + WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^ + WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^ + WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^ + WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^ + WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^ + WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^ + WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]); + v_p.ptr += 16; + v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) | + (((uint32_t)(v_p.ptr[1u])) << 8u) | + (((uint32_t)(v_p.ptr[2u])) << 16u) | + (((uint32_t)(v_p.ptr[3u])) << 24u)); + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^ + WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^ + WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^ + WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^ + WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^ + WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^ + WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^ + WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^ + WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^ + WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^ + WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^ + WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^ + WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^ + WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^ + WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^ + WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]); + v_p.ptr += 16; + } + v_p.len = 16; + uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16); + while (v_p.ptr < i_end1_p) { + v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) | + (((uint32_t)(v_p.ptr[1u])) << 8u) | + (((uint32_t)(v_p.ptr[2u])) << 16u) | + (((uint32_t)(v_p.ptr[3u])) << 24u)); + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^ + WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^ + WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^ + WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^ + WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^ + WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^ + WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^ + WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^ + WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^ + WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^ + WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^ + WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^ + WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^ + WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^ + WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^ + WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]); + v_p.ptr += 16; + } + v_p.len = 1; + uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end2_p) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u)); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); +} + +// -------- func crc32.ieee_hasher.checksum_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_crc32__ieee_hasher__checksum_u32( + const wuffs_crc32__ieee_hasher* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_state; +} + +// ‼ WUFFS MULTI-FILE SECTION +arm_crc32 +// -------- func crc32.ieee_hasher.up_arm_crc32 + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_arm_crc32( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + wuffs_base__slice_u8 v_p = {0}; + uint32_t v_s = 0; + + v_s = (4294967295u ^ self->private_impl.f_state); + while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) { + v_s = __crc32b(v_s, a_x.ptr[0u]); + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 8; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128); + while (v_p.ptr < i_end0_p) { + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + } + v_p.len = 8; + uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8); + while (v_p.ptr < i_end1_p) { + v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); + v_p.ptr += 8; + } + v_p.len = 1; + uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end2_p) { + v_s = __crc32b(v_s, v_p.ptr[0u]); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) +// ‼ WUFFS MULTI-FILE SECTION -arm_crc32 + +// ‼ WUFFS MULTI-FILE SECTION +x86_avx2 +// -------- func crc32.ieee_hasher.up_x86_avx2 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_x86_avx2( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s = 0; + wuffs_base__slice_u8 v_p = {0}; + __m128i v_k = {0}; + __m128i v_x0 = {0}; + __m128i v_x1 = {0}; + __m128i v_x2 = {0}; + __m128i v_x3 = {0}; + __m128i v_y0 = {0}; + __m128i v_y1 = {0}; + __m128i v_y2 = {0}; + __m128i v_y3 = {0}; + uint64_t v_tail_index = 0; + + v_s = (4294967295u ^ self->private_impl.f_state); + while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u)); + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + if (((uint64_t)(a_x.len)) < 64u) { + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u)); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); + } + v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)); + v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)); + v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)); + v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)); + v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s))); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2)); + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u); + v_p.ptr = i_slice_p.ptr; + v_p.len = 64; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64); + while (v_p.ptr < i_end0_p) { + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u)); + v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u)); + v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u)); + v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u)); + v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u))); + v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u))); + v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u))); + v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u))); + v_p.ptr += 64; + } + v_p.len = 0; + } + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4)); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x2); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x3); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u)); + v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u)); + v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ)); + v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u)); + v_x0 = _mm_and_si128(v_x0, v_x2); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU)); + v_x1 = _mm_and_si128(v_x0, v_x2); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u)); + v_x1 = _mm_and_si128(v_x1, v_x2); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u)))); + v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u); + if (v_tail_index < ((uint64_t)(a_x.len))) { + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u)); + v_p.ptr += 1; + } + v_p.len = 0; + } + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) +// ‼ WUFFS MULTI-FILE SECTION -x86_avx2 + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func crc32.ieee_hasher.up_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_crc32__ieee_hasher__up_x86_sse42( + wuffs_crc32__ieee_hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_s = 0; + wuffs_base__slice_u8 v_p = {0}; + __m128i v_k = {0}; + __m128i v_x0 = {0}; + __m128i v_x1 = {0}; + __m128i v_x2 = {0}; + __m128i v_x3 = {0}; + __m128i v_y0 = {0}; + __m128i v_y1 = {0}; + __m128i v_y2 = {0}; + __m128i v_y3 = {0}; + uint64_t v_tail_index = 0; + + v_s = (4294967295u ^ self->private_impl.f_state); + while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u)); + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + if (((uint64_t)(a_x.len)) < 64u) { + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u)); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); + } + v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)); + v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)); + v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)); + v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)); + v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s))); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2)); + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u); + v_p.ptr = i_slice_p.ptr; + v_p.len = 64; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64); + while (v_p.ptr < i_end0_p) { + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u)); + v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u)); + v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u)); + v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u)); + v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u))); + v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u))); + v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u))); + v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u))); + v_p.ptr += 64; + } + v_p.len = 0; + } + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4)); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x2); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u)); + v_x0 = _mm_xor_si128(v_x0, v_x3); + v_x0 = _mm_xor_si128(v_x0, v_y0); + v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u)); + v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u)); + v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ)); + v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u)); + v_x0 = _mm_and_si128(v_x0, v_x2); + v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU)); + v_x1 = _mm_and_si128(v_x0, v_x2); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u)); + v_x1 = _mm_and_si128(v_x1, v_x2); + v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u)); + v_x0 = _mm_xor_si128(v_x0, v_x1); + v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u)))); + v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u); + if (v_tail_index < ((uint64_t)(a_x.len))) { + { + wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); + v_p.ptr = i_slice_p.ptr; + v_p.len = 1; + uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end0_p) { + v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u)); + v_p.ptr += 1; + } + v_p.len = 0; + } + } + self->private_impl.f_state = (4294967295u ^ v_s); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) + +// ---------------- Status Codes Implementations + +const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)"; +const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)"; +const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count"; +const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition"; +const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code"; +const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length"; +const char wuffs_deflate__error__bad_block[] = "#deflate: bad block"; +const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance"; +const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count"; +const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count"; +const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length"; +const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code"; +const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes"; +const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input"; +const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state"; +const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O"; +const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance"; +const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits"; + +// ---------------- Private Consts + +static const uint8_t +WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = { + 16, 17, 18, 0, 8, 7, 9, 6, + 10, 5, 11, 4, 12, 3, 13, 2, + 14, 1, 15, +}; + +static const uint8_t +WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 128, 64, 192, 32, 160, 96, 224, + 16, 144, 80, 208, 48, 176, 112, 240, + 8, 136, 72, 200, 40, 168, 104, 232, + 24, 152, 88, 216, 56, 184, 120, 248, + 4, 132, 68, 196, 36, 164, 100, 228, + 20, 148, 84, 212, 52, 180, 116, 244, + 12, 140, 76, 204, 44, 172, 108, 236, + 28, 156, 92, 220, 60, 188, 124, 252, + 2, 130, 66, 194, 34, 162, 98, 226, + 18, 146, 82, 210, 50, 178, 114, 242, + 10, 138, 74, 202, 42, 170, 106, 234, + 26, 154, 90, 218, 58, 186, 122, 250, + 6, 134, 70, 198, 38, 166, 102, 230, + 22, 150, 86, 214, 54, 182, 118, 246, + 14, 142, 78, 206, 46, 174, 110, 238, + 30, 158, 94, 222, 62, 190, 126, 254, + 1, 129, 65, 193, 33, 161, 97, 225, + 17, 145, 81, 209, 49, 177, 113, 241, + 9, 137, 73, 201, 41, 169, 105, 233, + 25, 153, 89, 217, 57, 185, 121, 249, + 5, 133, 69, 197, 37, 165, 101, 229, + 21, 149, 85, 213, 53, 181, 117, 245, + 13, 141, 77, 205, 45, 173, 109, 237, + 29, 157, 93, 221, 61, 189, 125, 253, + 3, 131, 67, 195, 35, 163, 99, 227, + 19, 147, 83, 211, 51, 179, 115, 243, + 11, 139, 75, 203, 43, 171, 107, 235, + 27, 155, 91, 219, 59, 187, 123, 251, + 7, 135, 71, 199, 39, 167, 103, 231, + 23, 151, 87, 215, 55, 183, 119, 247, + 15, 143, 79, 207, 47, 175, 111, 239, + 31, 159, 95, 223, 63, 191, 127, 255, +}; + +static const uint32_t +WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1073741824, 1073742080, 1073742336, 1073742592, 1073742848, 1073743104, 1073743360, 1073743616, + 1073743888, 1073744400, 1073744912, 1073745424, 1073745952, 1073746976, 1073748000, 1073749024, + 1073750064, 1073752112, 1073754160, 1073756208, 1073758272, 1073762368, 1073766464, 1073770560, + 1073774672, 1073782864, 1073791056, 1073799248, 1073807104, 134217728, 134217728, 134217728, +}; + +static const uint32_t +WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1073741824, 1073742080, 1073742336, 1073742592, 1073742864, 1073743376, 1073743904, 1073744928, + 1073745968, 1073748016, 1073750080, 1073754176, 1073758288, 1073766480, 1073774688, 1073791072, + 1073807472, 1073840240, 1073873024, 1073938560, 1074004112, 1074135184, 1074266272, 1074528416, + 1074790576, 1075314864, 1075839168, 1076887744, 1077936336, 1080033488, 134217728, 134217728, +}; + +#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024 + +#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__do_transform_io( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_blocks( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_uncompressed( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_fixed_huffman( + wuffs_deflate__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_dynamic_huffman( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_huff( + wuffs_deflate__decoder* self, + uint32_t a_which, + uint32_t a_n_codes0, + uint32_t a_n_codes1, + uint32_t a_base_symbol); + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_bmi2( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast32( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast64( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast64__choosy_default( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_slow( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__io_transformer__func_ptrs +wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = { + (uint64_t(*)(const void*, + uint32_t))(&wuffs_deflate__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_deflate__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_deflate__decoder__set_quirk), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_deflate__decoder__initialize( + wuffs_deflate__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default; + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = + wuffs_base__io_transformer__vtable_name; + self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = + (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer); + return wuffs_base__make_status(NULL); +} + +wuffs_deflate__decoder* +wuffs_deflate__decoder__alloc(void) { + wuffs_deflate__decoder* x = + (wuffs_deflate__decoder*)(calloc(sizeof(wuffs_deflate__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_deflate__decoder__initialize( + x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_deflate__decoder(void) { + return sizeof(wuffs_deflate__decoder); +} + +// ---------------- Function Implementations + +// -------- func deflate.decoder.add_history + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_deflate__decoder__add_history( + wuffs_deflate__decoder* self, + wuffs_base__slice_u8 a_hist) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + wuffs_base__slice_u8 v_s = {0}; + uint64_t v_n_copied = 0; + uint32_t v_already_full = 0; + + v_s = a_hist; + if (((uint64_t)(v_s.len)) >= 32768u) { + v_s = wuffs_base__slice_u8__suffix(v_s, 32768u); + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s); + self->private_impl.f_history_index = 32768u; + } else { + v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767u), 32768), v_s); + if (v_n_copied < ((uint64_t)(v_s.len))) { + v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied); + v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s); + self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767u))) + 32768u); + } else { + v_already_full = 0u; + if (self->private_impl.f_history_index >= 32768u) { + v_already_full = 32768u; + } + self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767u) + ((uint32_t)((v_n_copied & 32767u))) + v_already_full); + } + } + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025)); + return wuffs_base__make_empty_struct(); +} + +// -------- func deflate.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_deflate__decoder__get_quirk( + const wuffs_deflate__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func deflate.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_deflate__decoder__set_quirk( + wuffs_deflate__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func deflate.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_deflate__decoder__history_retain_length( + const wuffs_deflate__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func deflate.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_deflate__decoder__workbuf_len( + const wuffs_deflate__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(1u, 1u); +} + +// -------- func deflate.decoder.transform_io + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_deflate__decoder__transform_io( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_deflate__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func deflate.decoder.do_transform_io + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__do_transform_io( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_mark = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + + uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.choosy_decode_huffman_fast64 = ( +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 : +#endif + self->private_impl.choosy_decode_huffman_fast64); + while (true) { + v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); + { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src); + v_status = t_0; + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + } + if ( ! wuffs_base__status__is_suspension(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))); + wuffs_deflate__decoder__add_history(self, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_do_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.decode_blocks + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_blocks( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_final = 0; + uint32_t v_b0 = 0; + uint32_t v_type = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_blocks[0]; + if (coro_susp_point) { + v_final = self->private_data.s_decode_blocks[0].v_final; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + label__outer__continue:; + while (v_final == 0u) { + while (self->private_impl.f_n_bits < 3u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_0 = *iop_a_src++; + v_b0 = t_0; + } + self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3u)); + self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3u) + 8u); + } + v_final = (self->private_impl.f_bits & 1u); + v_type = ((self->private_impl.f_bits >> 1u) & 3u); + self->private_impl.f_bits >>= 3u; + self->private_impl.f_n_bits -= 3u; + if (v_type == 0u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else if (v_type == 1u) { + v_status = wuffs_deflate__decoder__init_fixed_huffman(self); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + } else if (v_type == 2u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_deflate__error__bad_block); + goto exit; + } + self->private_impl.f_end_of_block = false; + while (true) { + if (sizeof(void*) == 4u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } else { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } + if (self->private_impl.f_end_of_block) { + goto label__outer__continue; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_end_of_block) { + goto label__outer__continue; + } + } + } + + ok: + self->private_impl.p_decode_blocks[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_blocks[0].v_final = v_final; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.decode_uncompressed + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_uncompressed( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_length = 0; + uint32_t v_n_copied = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed[0]; + if (coro_susp_point) { + v_length = self->private_data.s_decode_uncompressed[0].v_length; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + self->private_impl.f_n_bits = 0u; + self->private_impl.f_bits = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_uncompressed[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_uncompressed[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_length = t_0; + } + if ((((v_length) & 0xFFFFu) + ((v_length) >> (32u - 16u))) != 65535u) { + status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length); + goto exit; + } + v_length = ((v_length) & 0xFFFFu); + while (true) { + v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_reader( + &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src); + if (v_length <= v_n_copied) { + status = wuffs_base__make_status(NULL); + goto ok; + } + v_length -= v_n_copied; + if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + } else { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + } + } + + ok: + self->private_impl.p_decode_uncompressed[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_uncompressed[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_uncompressed[0].v_length = v_length; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.init_fixed_huffman + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_fixed_huffman( + wuffs_deflate__decoder* self) { + uint32_t v_i = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + while (v_i < 144u) { + self->private_data.f_code_lengths[v_i] = 8u; + v_i += 1u; + } + while (v_i < 256u) { + self->private_data.f_code_lengths[v_i] = 9u; + v_i += 1u; + } + while (v_i < 280u) { + self->private_data.f_code_lengths[v_i] = 7u; + v_i += 1u; + } + while (v_i < 288u) { + self->private_data.f_code_lengths[v_i] = 8u; + v_i += 1u; + } + while (v_i < 320u) { + self->private_data.f_code_lengths[v_i] = 5u; + v_i += 1u; + } + v_status = wuffs_deflate__decoder__init_huff(self, + 0u, + 0u, + 288u, + 257u); + if (wuffs_base__status__is_error(&v_status)) { + return v_status; + } + v_status = wuffs_deflate__decoder__init_huff(self, + 1u, + 288u, + 320u, + 0u); + if (wuffs_base__status__is_error(&v_status)) { + return v_status; + } + return wuffs_base__make_status(NULL); +} + +// -------- func deflate.decoder.init_dynamic_huffman + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_dynamic_huffman( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_b0 = 0; + uint32_t v_n_lit = 0; + uint32_t v_n_dist = 0; + uint32_t v_n_clen = 0; + uint32_t v_i = 0; + uint32_t v_b1 = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint32_t v_mask = 0; + uint32_t v_table_entry = 0; + uint32_t v_table_entry_n_bits = 0; + uint32_t v_b2 = 0; + uint32_t v_n_extra_bits = 0; + uint8_t v_rep_symbol = 0; + uint32_t v_rep_count = 0; + uint32_t v_b3 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman[0]; + if (coro_susp_point) { + v_bits = self->private_data.s_init_dynamic_huffman[0].v_bits; + v_n_bits = self->private_data.s_init_dynamic_huffman[0].v_n_bits; + v_n_lit = self->private_data.s_init_dynamic_huffman[0].v_n_lit; + v_n_dist = self->private_data.s_init_dynamic_huffman[0].v_n_dist; + v_n_clen = self->private_data.s_init_dynamic_huffman[0].v_n_clen; + v_i = self->private_data.s_init_dynamic_huffman[0].v_i; + v_mask = self->private_data.s_init_dynamic_huffman[0].v_mask; + v_n_extra_bits = self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits; + v_rep_symbol = self->private_data.s_init_dynamic_huffman[0].v_rep_symbol; + v_rep_count = self->private_data.s_init_dynamic_huffman[0].v_rep_count; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + v_bits = self->private_impl.f_bits; + v_n_bits = self->private_impl.f_n_bits; + while (v_n_bits < 14u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_0 = *iop_a_src++; + v_b0 = t_0; + } + v_bits |= (v_b0 << v_n_bits); + v_n_bits += 8u; + } + v_n_lit = (((v_bits) & 0x1Fu) + 257u); + if (v_n_lit > 286u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count); + goto exit; + } + v_bits >>= 5u; + v_n_dist = (((v_bits) & 0x1Fu) + 1u); + if (v_n_dist > 30u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count); + goto exit; + } + v_bits >>= 5u; + v_n_clen = (((v_bits) & 0xFu) + 4u); + v_bits >>= 4u; + v_n_bits -= 14u; + v_i = 0u; + while (v_i < v_n_clen) { + while (v_n_bits < 3u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_1 = *iop_a_src++; + v_b1 = t_1; + } + v_bits |= (v_b1 << v_n_bits); + v_n_bits += 8u; + } + self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7u))); + v_bits >>= 3u; + v_n_bits -= 3u; + v_i += 1u; + } + while (v_i < 19u) { + self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0u; + v_i += 1u; + } + v_status = wuffs_deflate__decoder__init_huff(self, + 0u, + 0u, + 19u, + 4095u); + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } + v_mask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u); + v_i = 0u; + while (v_i < (v_n_lit + v_n_dist)) { + while (true) { + v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_mask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + if (v_n_bits >= v_table_entry_n_bits) { + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_2 = *iop_a_src++; + v_b2 = t_2; + } + v_bits |= (v_b2 << v_n_bits); + v_n_bits += 8u; + } + if ((v_table_entry >> 24u) != 128u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_table_entry = ((v_table_entry >> 8u) & 255u); + if (v_table_entry < 16u) { + self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry)); + v_i += 1u; + continue; + } + v_n_extra_bits = 0u; + v_rep_symbol = 0u; + v_rep_count = 0u; + if (v_table_entry == 16u) { + v_n_extra_bits = 2u; + if (v_i <= 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition); + goto exit; + } + v_rep_symbol = (self->private_data.f_code_lengths[(v_i - 1u)] & 15u); + v_rep_count = 3u; + } else if (v_table_entry == 17u) { + v_n_extra_bits = 3u; + v_rep_symbol = 0u; + v_rep_count = 3u; + } else if (v_table_entry == 18u) { + v_n_extra_bits = 7u; + v_rep_symbol = 0u; + v_rep_count = 11u; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + while (v_n_bits < v_n_extra_bits) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_3 = *iop_a_src++; + v_b3 = t_3; + } + v_bits |= (v_b3 << v_n_bits); + v_n_bits += 8u; + } + v_rep_count += ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_n_extra_bits)); + v_bits >>= v_n_extra_bits; + v_n_bits -= v_n_extra_bits; + while (v_rep_count > 0u) { + if (v_i >= (v_n_lit + v_n_dist)) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count); + goto exit; + } + self->private_data.f_code_lengths[v_i] = v_rep_symbol; + v_i += 1u; + v_rep_count -= 1u; + } + } + if (v_i != (v_n_lit + v_n_dist)) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count); + goto exit; + } + if (self->private_data.f_code_lengths[256u] == 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code); + goto exit; + } + v_status = wuffs_deflate__decoder__init_huff(self, + 0u, + 0u, + v_n_lit, + 257u); + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } + v_status = wuffs_deflate__decoder__init_huff(self, + 1u, + v_n_lit, + (v_n_lit + v_n_dist), + 0u); + if (wuffs_base__status__is_error(&v_status)) { + status = v_status; + goto exit; + } + self->private_impl.f_bits = v_bits; + self->private_impl.f_n_bits = v_n_bits; + + goto ok; + ok: + self->private_impl.p_init_dynamic_huffman[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_init_dynamic_huffman[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_init_dynamic_huffman[0].v_bits = v_bits; + self->private_data.s_init_dynamic_huffman[0].v_n_bits = v_n_bits; + self->private_data.s_init_dynamic_huffman[0].v_n_lit = v_n_lit; + self->private_data.s_init_dynamic_huffman[0].v_n_dist = v_n_dist; + self->private_data.s_init_dynamic_huffman[0].v_n_clen = v_n_clen; + self->private_data.s_init_dynamic_huffman[0].v_i = v_i; + self->private_data.s_init_dynamic_huffman[0].v_mask = v_mask; + self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits = v_n_extra_bits; + self->private_data.s_init_dynamic_huffman[0].v_rep_symbol = v_rep_symbol; + self->private_data.s_init_dynamic_huffman[0].v_rep_count = v_rep_count; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.init_huff + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__init_huff( + wuffs_deflate__decoder* self, + uint32_t a_which, + uint32_t a_n_codes0, + uint32_t a_n_codes1, + uint32_t a_base_symbol) { + uint16_t v_counts[16] = {0}; + uint32_t v_i = 0; + uint32_t v_remaining = 0; + uint16_t v_offsets[16] = {0}; + uint32_t v_n_symbols = 0; + uint32_t v_count = 0; + uint16_t v_symbols[320] = {0}; + uint32_t v_min_cl = 0; + uint32_t v_max_cl = 0; + uint32_t v_initial_high_bits = 0; + uint32_t v_prev_cl = 0; + uint32_t v_prev_redirect_key = 0; + uint32_t v_top = 0; + uint32_t v_next_top = 0; + uint32_t v_code = 0; + uint32_t v_key = 0; + uint32_t v_value = 0; + uint32_t v_cl = 0; + uint32_t v_redirect_key = 0; + uint32_t v_j = 0; + uint32_t v_reversed_key = 0; + uint32_t v_symbol = 0; + uint32_t v_high_bits = 0; + uint32_t v_delta = 0; + + v_i = a_n_codes0; + while (v_i < a_n_codes1) { + if (v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + v_i += 1u; + } + if ((((uint32_t)(v_counts[0u])) + a_n_codes0) == a_n_codes1) { + return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes); + } + v_remaining = 1u; + v_i = 1u; + while (v_i <= 15u) { + if (v_remaining > 1073741824u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_remaining <<= 1u; + if (v_remaining < ((uint32_t)(v_counts[v_i]))) { + return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed); + } + v_remaining -= ((uint32_t)(v_counts[v_i])); + v_i += 1u; + } + if (v_remaining != 0u) { + if ((a_which == 1u) && (v_counts[1u] == 1u) && ((((uint32_t)(v_counts[0u])) + a_n_codes0 + 1u) == a_n_codes1)) { + v_i = 0u; + while (v_i <= 29u) { + if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1u) { + self->private_impl.f_n_huffs_bits[1u] = 1u; + self->private_data.f_huffs[1u][0u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1u); + self->private_data.f_huffs[1u][1u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31u] | 1u); + return wuffs_base__make_status(NULL); + } + v_i += 1u; + } + } + return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed); + } + v_i = 1u; + while (v_i <= 15u) { + v_offsets[v_i] = ((uint16_t)(v_n_symbols)); + v_count = ((uint32_t)(v_counts[v_i])); + if (v_n_symbols > (320u - v_count)) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_n_symbols = (v_n_symbols + v_count); + v_i += 1u; + } + if (v_n_symbols > 288u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_i = a_n_codes0; + while (v_i < a_n_codes1) { + if (v_i < a_n_codes0) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + if (self->private_data.f_code_lengths[v_i] != 0u) { + if (v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_symbols[v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)]] = ((uint16_t)((v_i - a_n_codes0))); +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + v_i += 1u; + } + v_min_cl = 1u; + while (true) { + if (v_counts[v_min_cl] != 0u) { + break; + } + if (v_min_cl >= 9u) { + return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length); + } + v_min_cl += 1u; + } + v_max_cl = 15u; + while (true) { + if (v_counts[v_max_cl] != 0u) { + break; + } + if (v_max_cl <= 1u) { + return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes); + } + v_max_cl -= 1u; + } + if (v_max_cl <= 9u) { + self->private_impl.f_n_huffs_bits[a_which] = v_max_cl; + } else { + self->private_impl.f_n_huffs_bits[a_which] = 9u; + } + v_i = 0u; + if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15u])))) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + if ((a_n_codes0 + ((uint32_t)(v_symbols[0u]))) >= 320u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_initial_high_bits = 512u; + if (v_max_cl < 9u) { + v_initial_high_bits = (((uint32_t)(1u)) << v_max_cl); + } + v_prev_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0u])))] & 15u))); + v_prev_redirect_key = 4294967295u; + v_top = 0u; + v_next_top = 512u; + v_code = 0u; + v_key = 0u; + v_value = 0u; + while (true) { + if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15u))); + if (v_cl > v_prev_cl) { + v_code <<= (v_cl - v_prev_cl); + if (v_code >= 32768u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + } + v_prev_cl = v_cl; + v_key = v_code; + if (v_cl > 9u) { + v_cl -= 9u; + v_redirect_key = ((v_key >> v_cl) & 511u); + v_key = ((v_key) & WUFFS_BASE__LOW_BITS_MASK__U32(v_cl)); + if (v_prev_redirect_key != v_redirect_key) { + v_prev_redirect_key = v_redirect_key; + v_remaining = (((uint32_t)(1u)) << v_cl); + v_j = v_prev_cl; + while (v_j <= 15u) { + if (v_remaining <= ((uint32_t)(v_counts[v_j]))) { + break; + } + v_remaining -= ((uint32_t)(v_counts[v_j])); + if (v_remaining > 1073741824u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_remaining <<= 1u; + v_j += 1u; + } + if ((v_j <= 9u) || (15u < v_j)) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_j -= 9u; + v_initial_high_bits = (((uint32_t)(1u)) << v_j); + v_top = v_next_top; + if ((v_top + (((uint32_t)(1u)) << v_j)) > 1024u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_next_top = (v_top + (((uint32_t)(1u)) << v_j)); + v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1u)])) | ((v_redirect_key & 1u) << 8u)); + self->private_data.f_huffs[a_which][v_redirect_key] = (268435465u | (v_top << 8u) | (v_j << 4u)); + } + } + if ((v_key >= 512u) || (v_counts[v_prev_cl] <= 0u)) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_counts[v_prev_cl] -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1u)])) | ((v_key & 1u) << 8u)); + v_reversed_key >>= (9u - v_cl); + v_symbol = ((uint32_t)(v_symbols[v_i])); + if (v_symbol == 256u) { + v_value = (536870912u | v_cl); + } else if ((v_symbol < 256u) && (a_which == 0u)) { + v_value = (2147483648u | (v_symbol << 8u) | v_cl); + } else if (v_symbol >= a_base_symbol) { + v_symbol -= a_base_symbol; + if (a_which == 0u) { + v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl); + } else { + v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl); + } + } else { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + v_high_bits = v_initial_high_bits; + v_delta = (((uint32_t)(1u)) << v_cl); + while (v_high_bits >= v_delta) { + v_high_bits -= v_delta; + if ((v_top + ((v_high_bits | v_reversed_key) & 511u)) >= 1024u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511u))] = v_value; + } + v_i += 1u; + if (v_i >= v_n_symbols) { + break; + } + v_code += 1u; + if (v_code >= 32768u) { + return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + } + } + return wuffs_base__make_status(NULL); +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2 +// -------- func deflate.decoder.decode_huffman_bmi2 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_bmi2( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_table_entry = 0; + uint32_t v_table_entry_n_bits = 0; + uint64_t v_lmask = 0; + uint64_t v_dmask = 0; + uint32_t v_redir_top = 0; + uint32_t v_redir_mask = 0; + uint32_t v_length = 0; + uint32_t v_dist_minus_1 = 0; + uint32_t v_hlen = 0; + uint32_t v_hdist = 0; + uint32_t v_hdist_adjustment = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + v_bits = ((uint64_t)(self->private_impl.f_bits)); + v_n_bits = self->private_impl.f_n_bits; + v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u); + v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u); + if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) { + status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); + goto exit; + } + v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))); + label__loop__continue:; + while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) { + v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u))); + iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_length = (((v_table_entry >> 8u) & 255u) + 3u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_table_entry_n_bits > 0u) { + v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 28u) == 1u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + if ((v_table_entry >> 24u) != 64u) { + if ((v_table_entry >> 24u) == 8u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + do { + if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { + v_hlen = 0u; + v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); + if (v_length > v_hdist) { + v_length -= v_hdist; + v_hlen = v_hdist; + } else { + v_hlen = v_length; + v_length = 0u; + } + v_hdist += v_hdist_adjustment; + if (self->private_impl.f_history_index < v_hdist) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); + goto exit; + } + wuffs_base__io_writer__limited_copy_u32_from_slice( + &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025)); + if (v_length == 0u) { + goto label__loop__continue; + } + if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); + goto exit; + } + } + if ((v_dist_minus_1 + 1u) >= 8u) { + wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } else if ((v_dist_minus_1 + 1u) == 1u) { + wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } else { + wuffs_base__io_writer__limited_copy_u32_from_history_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } + } while (0); + } + if (v_n_bits > 63u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + while (v_n_bits >= 8u) { + v_n_bits -= 8u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); + goto exit; + } + } + self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u)))); + self->private_impl.f_n_bits = v_n_bits; + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2 + +// -------- func deflate.decoder.decode_huffman_fast32 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast32( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_table_entry = 0; + uint32_t v_table_entry_n_bits = 0; + uint32_t v_lmask = 0; + uint32_t v_dmask = 0; + uint32_t v_redir_top = 0; + uint32_t v_redir_mask = 0; + uint32_t v_length = 0; + uint32_t v_dist_minus_1 = 0; + uint32_t v_hlen = 0; + uint32_t v_hdist = 0; + uint32_t v_hdist_adjustment = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + v_bits = self->private_impl.f_bits; + v_n_bits = self->private_impl.f_n_bits; + v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u); + v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u); + if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) { + status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); + goto exit; + } + v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))); + label__loop__continue:; + while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12u)) { + if (v_n_bits < 15u) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } else { + } + v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + if (v_n_bits < 15u) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } else { + } + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_length = (((v_table_entry >> 8u) & 255u) + 3u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_table_entry_n_bits > 0u) { + if (v_n_bits < 15u) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } else { + } + v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } else { + } + if (v_n_bits < 15u) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } else { + } + v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 28u) == 1u) { + if (v_n_bits < 15u) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } else { + } + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } else { + } + if ((v_table_entry >> 24u) != 64u) { + if ((v_table_entry >> 24u) == 8u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_n_bits < v_table_entry_n_bits) { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + } + v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + do { + if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { + v_hlen = 0u; + v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); + if (v_length > v_hdist) { + v_length -= v_hdist; + v_hlen = v_hdist; + } else { + v_hlen = v_length; + v_length = 0u; + } + v_hdist += v_hdist_adjustment; + if (self->private_impl.f_history_index < v_hdist) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); + goto exit; + } + wuffs_base__io_writer__limited_copy_u32_from_slice( + &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025)); + if (v_length == 0u) { + goto label__loop__continue; + } + if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); + goto exit; + } + } + if ((v_dist_minus_1 + 1u) >= 8u) { + wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } else { + wuffs_base__io_writer__limited_copy_u32_from_history_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } + } while (0); + } + while (v_n_bits >= 8u) { + v_n_bits -= 8u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); + goto exit; + } + } + self->private_impl.f_bits = (v_bits & ((((uint32_t)(1u)) << v_n_bits) - 1u)); + self->private_impl.f_n_bits = v_n_bits; + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.decode_huffman_fast64 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast64( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_fast64__choosy_default( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_table_entry = 0; + uint32_t v_table_entry_n_bits = 0; + uint64_t v_lmask = 0; + uint64_t v_dmask = 0; + uint32_t v_redir_top = 0; + uint32_t v_redir_mask = 0; + uint32_t v_length = 0; + uint32_t v_dist_minus_1 = 0; + uint32_t v_hlen = 0; + uint32_t v_hdist = 0; + uint32_t v_hdist_adjustment = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + v_bits = ((uint64_t)(self->private_impl.f_bits)); + v_n_bits = self->private_impl.f_n_bits; + v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u); + v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u); + if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) { + status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); + goto exit; + } + v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))); + label__loop__continue:; + while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) { + v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u))); + iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 31u) != 0u) { + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_length = (((v_table_entry >> 8u) & 255u) + 3u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_table_entry_n_bits > 0u) { + v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + if ((v_table_entry >> 28u) == 1u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + if ((v_table_entry >> 24u) != 64u) { + if ((v_table_entry >> 24u) == 8u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + do { + if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { + v_hlen = 0u; + v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); + if (v_length > v_hdist) { + v_length -= v_hdist; + v_hlen = v_hdist; + } else { + v_hlen = v_length; + v_length = 0u; + } + v_hdist += v_hdist_adjustment; + if (self->private_impl.f_history_index < v_hdist) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); + goto exit; + } + wuffs_base__io_writer__limited_copy_u32_from_slice( + &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025)); + if (v_length == 0u) { + goto label__loop__continue; + } + if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); + goto exit; + } + } + if ((v_dist_minus_1 + 1u) >= 8u) { + wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } else if ((v_dist_minus_1 + 1u) == 1u) { + wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } else { + wuffs_base__io_writer__limited_copy_u32_from_history_fast( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + } + } while (0); + } + if (v_n_bits > 63u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + while (v_n_bits >= 8u) { + v_n_bits -= 8u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); + goto exit; + } + } + self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u)))); + self->private_impl.f_n_bits = v_n_bits; + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func deflate.decoder.decode_huffman_slow + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_deflate__decoder__decode_huffman_slow( + wuffs_deflate__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_table_entry = 0; + uint32_t v_table_entry_n_bits = 0; + uint32_t v_lmask = 0; + uint32_t v_dmask = 0; + uint32_t v_b0 = 0; + uint32_t v_redir_top = 0; + uint32_t v_redir_mask = 0; + uint32_t v_b1 = 0; + uint32_t v_length = 0; + uint32_t v_b2 = 0; + uint32_t v_b3 = 0; + uint32_t v_b4 = 0; + uint32_t v_dist_minus_1 = 0; + uint32_t v_b5 = 0; + uint32_t v_n_copied = 0; + uint32_t v_hlen = 0; + uint32_t v_hdist = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0]; + if (coro_susp_point) { + v_bits = self->private_data.s_decode_huffman_slow[0].v_bits; + v_n_bits = self->private_data.s_decode_huffman_slow[0].v_n_bits; + v_table_entry_n_bits = self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits; + v_lmask = self->private_data.s_decode_huffman_slow[0].v_lmask; + v_dmask = self->private_data.s_decode_huffman_slow[0].v_dmask; + v_redir_top = self->private_data.s_decode_huffman_slow[0].v_redir_top; + v_redir_mask = self->private_data.s_decode_huffman_slow[0].v_redir_mask; + v_length = self->private_data.s_decode_huffman_slow[0].v_length; + v_dist_minus_1 = self->private_data.s_decode_huffman_slow[0].v_dist_minus_1; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + v_bits = self->private_impl.f_bits; + v_n_bits = self->private_impl.f_n_bits; + v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u); + v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u); + label__loop__continue:; + while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) { + while (true) { + v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + if (v_n_bits >= v_table_entry_n_bits) { + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_0 = *iop_a_src++; + v_b0 = t_0; + } + v_bits |= (v_b0 << v_n_bits); + v_n_bits += 8u; + } + if ((v_table_entry >> 31u) != 0u) { + self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u))); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (iop_a_dst == io2_a_dst) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + goto suspend; + } + *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch)); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + while (true) { + v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + if (v_n_bits >= v_table_entry_n_bits) { + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_1 = *iop_a_src++; + v_b1 = t_1; + } + v_bits |= (v_b1 << v_n_bits); + v_n_bits += 8u; + } + if ((v_table_entry >> 31u) != 0u) { + self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u))); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (iop_a_dst == io2_a_dst) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + goto suspend; + } + *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch)); + continue; + } else if ((v_table_entry >> 30u) != 0u) { + } else if ((v_table_entry >> 29u) != 0u) { + self->private_impl.f_end_of_block = true; + break; + } else if ((v_table_entry >> 28u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + } else if ((v_table_entry >> 27u) != 0u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_length = (((v_table_entry >> 8u) & 255u) + 3u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_table_entry_n_bits > 0u) { + while (v_n_bits < v_table_entry_n_bits) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_2 = *iop_a_src++; + v_b2 = t_2; + } + v_bits |= (v_b2 << v_n_bits); + v_n_bits += 8u; + } + v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + while (true) { + v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)]; + v_table_entry_n_bits = (v_table_entry & 15u); + if (v_n_bits >= v_table_entry_n_bits) { + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_3 = *iop_a_src++; + v_b3 = t_3; + } + v_bits |= (v_b3 << v_n_bits); + v_n_bits += 8u; + } + if ((v_table_entry >> 28u) == 1u) { + v_redir_top = ((v_table_entry >> 8u) & 65535u); + v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u); + while (true) { + v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)]; + v_table_entry_n_bits = (v_table_entry & 15u); + if (v_n_bits >= v_table_entry_n_bits) { + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_4 = *iop_a_src++; + v_b4 = t_4; + } + v_bits |= (v_b4 << v_n_bits); + v_n_bits += 8u; + } + } + if ((v_table_entry >> 24u) != 64u) { + if ((v_table_entry >> 24u) == 8u) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); + goto exit; + } + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); + goto exit; + } + v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u); + v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u); + if (v_table_entry_n_bits > 0u) { + while (v_n_bits < v_table_entry_n_bits) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_5 = *iop_a_src++; + v_b5 = t_5; + } + v_bits |= (v_b5 << v_n_bits); + v_n_bits += 8u; + } + v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u); + v_bits >>= v_table_entry_n_bits; + v_n_bits -= v_table_entry_n_bits; + } + while (true) { + if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { + v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); + if (v_hdist < v_length) { + v_hlen = v_hdist; + } else { + v_hlen = v_length; + } + v_hdist += ((uint32_t)(((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))))); + if (self->private_impl.f_history_index < v_hdist) { + status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); + goto exit; + } + v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_slice( + &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025)); + if (v_n_copied < v_hlen) { + v_length -= v_n_copied; + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); + continue; + } + v_length -= v_hlen; + if (v_length == 0u) { + goto label__loop__continue; + } + } + v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_history( + &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u)); + if (v_length <= v_n_copied) { + goto label__loop__continue; + } + v_length -= v_n_copied; + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); + } + } + self->private_impl.f_bits = v_bits; + self->private_impl.f_n_bits = v_n_bits; + if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) { + status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); + goto exit; + } + + ok: + self->private_impl.p_decode_huffman_slow[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_huffman_slow[0].v_bits = v_bits; + self->private_data.s_decode_huffman_slow[0].v_n_bits = v_n_bits; + self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits = v_table_entry_n_bits; + self->private_data.s_decode_huffman_slow[0].v_lmask = v_lmask; + self->private_data.s_decode_huffman_slow[0].v_dmask = v_dmask; + self->private_data.s_decode_huffman_slow[0].v_redir_top = v_redir_top; + self->private_data.s_decode_huffman_slow[0].v_redir_mask = v_redir_mask; + self->private_data.s_decode_huffman_slow[0].v_length = v_length; + self->private_data.s_decode_huffman_slow[0].v_dist_minus_1 = v_dist_minus_1; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) + +// ---------------- Status Codes Implementations + +const char wuffs_gif__error__bad_lzw_code[] = "#gif: bad LZW code"; +const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label"; +const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size"; +const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control"; +const char wuffs_gif__error__bad_header[] = "#gif: bad header"; +const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width"; +const char wuffs_gif__error__bad_palette[] = "#gif: bad palette"; +const char wuffs_gif__error__truncated_input[] = "#gif: truncated input"; +const char wuffs_gif__error__internal_error_inconsistent_i_o[] = "#gif: internal error: inconsistent I/O"; + +// ---------------- Private Consts + +static const uint32_t +WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = { + 4294967295, 1, 2, 4, 0, +}; + +static const uint8_t +WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1, 2, 4, 8, 8, +}; + +static const uint8_t +WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 1, 2, 4, 8, +}; + +static const uint8_t +WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = { + 65, 78, 73, 77, 69, 88, 84, 83, + 49, 46, 48, +}; + +static const uint8_t +WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = { + 78, 69, 84, 83, 67, 65, 80, 69, + 50, 46, 48, +}; + +static const uint8_t +WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = { + 73, 67, 67, 82, 71, 66, 71, 49, + 48, 49, 50, +}; + +static const uint8_t +WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = { + 88, 77, 80, 32, 68, 97, 116, 97, + 88, 77, 80, +}; + +#define WUFFS_GIF__QUIRKS_BASE 1041635328 + +#define WUFFS_GIF__QUIRKS_COUNT 7 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_image_config( + wuffs_gif__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_tell_me_more( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_frame_config( + wuffs_gif__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__skip_frame( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_frame( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__reset_gc( + wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_up_to_id_part1( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_header( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_lsd( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_extension( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__skip_blocks( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_ae( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_gc( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part0( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part1( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part2( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__copy_to_image_buffer( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_pb, + wuffs_base__slice_u8 a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__lzw_init( + wuffs_gif__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__lzw_read_from( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_gif__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_gif__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_gif__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_gif__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_gif__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_gif__decoder__initialize( + wuffs_gif__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_gif__decoder* +wuffs_gif__decoder__alloc(void) { + wuffs_gif__decoder* x = + (wuffs_gif__decoder*)(calloc(sizeof(wuffs_gif__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_gif__decoder__initialize( + x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_gif__decoder(void) { + return sizeof(wuffs_gif__decoder); +} + +// ---------------- Function Implementations + +// -------- func gif.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__get_quirk( + const wuffs_gif__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + uint32_t v_key = 0; + + if (a_key >= 1041635328u) { + v_key = (a_key - 1041635328u); + if (v_key < 7u) { + if (self->private_impl.f_quirks[v_key]) { + return 1u; + } + } + } + return 0u; +} + +// -------- func gif.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__set_quirk( + wuffs_gif__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if ((self->private_impl.f_call_sequence == 0u) && (a_key >= 1041635328u)) { + a_key -= 1041635328u; + if (a_key < 7u) { + self->private_impl.f_quirks[a_key] = (a_value > 0u); + return wuffs_base__make_status(NULL); + } + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func gif.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_image_config( + wuffs_gif__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_gif__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func gif.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_image_config( + wuffs_gif__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + bool v_ffio = false; + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if ( ! self->private_impl.f_seen_header) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_gif__decoder__decode_header(self, a_src); + if (status.repr) { + goto suspend; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_gif__decoder__decode_lsd(self, a_src); + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_header = true; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src); + if (status.repr) { + goto suspend; + } + v_ffio = ! self->private_impl.f_gc_has_transparent_index; + if ( ! self->private_impl.f_quirks[2u]) { + v_ffio = (v_ffio && + (self->private_impl.f_frame_rect_x0 == 0u) && + (self->private_impl.f_frame_rect_y0 == 0u) && + (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) && + (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height)); + } else if (v_ffio) { + self->private_impl.f_black_color_u32_argb_premul = 4278190080u; + } + if (self->private_impl.f_background_color_u32_argb_premul == 77u) { + self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul; + } + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + 2198077448u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + v_ffio); + } + if (self->private_impl.f_call_sequence == 0u) { + self->private_impl.f_call_sequence = 32u; + } + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + return status; +} + +// -------- func gif.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_gif__decoder__set_report_metadata( + wuffs_gif__decoder* self, + uint32_t a_fourcc, + bool a_report) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if (a_fourcc == 1229144912u) { + self->private_impl.f_report_metadata_iccp = a_report; + } else if (a_fourcc == 1481461792u) { + self->private_impl.f_report_metadata_xmp = a_report; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func gif.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__tell_me_more( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_gif__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_tell_me_more[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func gif.decoder.do_tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_tell_me_more( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_chunk_length = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_call_sequence & 16u) == 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + if (self->private_impl.f_metadata_fourcc == 0u) { + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + } + while (true) { + while (true) { + if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) { + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + 2u, + 0u, + self->private_impl.f_metadata_io_position, + 0u, + 0u); + } + status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + 0u, + 0u, + 0u, + 0u, + 0u); + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + continue; + } + break; + } + v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); + if (v_chunk_length <= 0u) { + iop_a_src += 1u; + break; + } + if (self->private_impl.f_metadata_fourcc == 1481461792u) { + v_chunk_length += 1u; + } else { + iop_a_src += 1u; + } + self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length); + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + 3u, + self->private_impl.f_metadata_fourcc, + 0u, + wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), + self->private_impl.f_metadata_io_position); + } + status = wuffs_base__make_status(wuffs_base__suspension__even_more_information); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + } + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + 3u, + self->private_impl.f_metadata_fourcc, + 0u, + self->private_impl.f_metadata_io_position, + self->private_impl.f_metadata_io_position); + } + self->private_impl.f_call_sequence &= 239u; + self->private_impl.f_metadata_fourcc = 0u; + self->private_impl.f_metadata_io_position = 0u; + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + self->private_impl.p_do_tell_me_more[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_gif__decoder__num_animation_loops( + const wuffs_gif__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_seen_num_animation_loops_value) { + return self->private_impl.f_num_animation_loops_value; + } + if (self->private_impl.f_num_decoded_frame_configs_value > 1u) { + return 1u; + } + return 0u; +} + +// -------- func gif.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__num_decoded_frame_configs( + const wuffs_gif__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_num_decoded_frame_configs_value; +} + +// -------- func gif.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__num_decoded_frames( + const wuffs_gif__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_num_decoded_frames_value; +} + +// -------- func gif.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_gif__decoder__frame_dirty_rect( + const wuffs_gif__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width), + wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height), + wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width), + wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height)); +} + +// -------- func gif.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gif__decoder__history_retain_length( + const wuffs_gif__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func gif.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_gif__decoder__workbuf_len( + const wuffs_gif__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +// -------- func gif.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__restart_frame( + wuffs_gif__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } else if (a_io_position == 0u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_delayed_num_decoded_frames = false; + self->private_impl.f_frame_config_io_position = a_io_position; + self->private_impl.f_num_decoded_frame_configs_value = a_index; + self->private_impl.f_num_decoded_frames_value = a_index; + wuffs_gif__decoder__reset_gc(self); + self->private_impl.f_call_sequence = 40u; + return wuffs_base__make_status(NULL); +} + +// -------- func gif.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_frame_config( + wuffs_gif__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_gif__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func gif.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_frame_config( + wuffs_gif__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_background_color = 0; + uint8_t v_flags = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + if (coro_susp_point) { + v_background_color = self->private_data.s_do_decode_frame_config[0].v_background_color; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_dirty_max_excl_y = 0u; + if ((self->private_impl.f_call_sequence & 16u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_gif__decoder__skip_frame(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_call_sequence >= 96u) { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if ((self->private_impl.f_num_decoded_frame_configs_value > 0u) || (self->private_impl.f_call_sequence == 40u)) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_call_sequence >= 96u) { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + } + v_background_color = self->private_impl.f_black_color_u32_argb_premul; + if ( ! self->private_impl.f_gc_has_transparent_index) { + v_background_color = self->private_impl.f_background_color_u32_argb_premul; + if (self->private_impl.f_quirks[1u] && (self->private_impl.f_num_decoded_frame_configs_value == 0u)) { + while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + } + v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if ((v_flags & 128u) != 0u) { + v_background_color = self->private_impl.f_black_color_u32_argb_premul; + } + } + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width), + wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height), + wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width), + wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)), + ((wuffs_base__flicks)(self->private_impl.f_gc_duration)), + self->private_impl.f_num_decoded_frame_configs_value, + self->private_impl.f_frame_config_io_position, + self->private_impl.f_gc_disposal, + ! self->private_impl.f_gc_has_transparent_index, + false, + v_background_color); + } + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u); + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_frame_config[0].v_background_color = v_background_color; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.skip_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__skip_frame( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_flags = 0; + uint8_t v_lw = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_skip_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_flags = t_0; + } + if ((v_flags & 128u) != 0u) { + self->private_data.s_skip_frame[0].scratch = (((uint32_t)(3u)) << (1u + (v_flags & 7u))); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_skip_frame[0].scratch; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_lw = t_1; + } + if (v_lw > 8u) { + status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + status = wuffs_gif__decoder__skip_blocks(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_quirks[0u]) { + self->private_impl.f_delayed_num_decoded_frames = true; + } else { + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + } + wuffs_gif__decoder__reset_gc(self); + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_skip_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gif__decoder__decode_frame( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_gif__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func gif.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__do_decode_frame( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src); + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (self->private_impl.f_quirks[5u] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) { + status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size); + goto exit; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend); + if (status.repr) { + goto suspend; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf); + if (status.repr) { + goto suspend; + } + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + wuffs_gif__decoder__reset_gc(self); + self->private_impl.f_call_sequence = 32u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + return status; +} + +// -------- func gif.decoder.reset_gc + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__reset_gc( + wuffs_gif__decoder* self) { + self->private_impl.f_gc_has_transparent_index = false; + self->private_impl.f_gc_transparent_index = 0u; + self->private_impl.f_gc_disposal = 0u; + self->private_impl.f_gc_duration = 0u; + return wuffs_base__make_empty_struct(); +} + +// -------- func gif.decoder.decode_up_to_id_part1 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_up_to_id_part1( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_block_type = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_frame_config_io_position == 0u) || (self->private_impl.f_num_decoded_frame_configs_value > 0u)) { + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_block_type = t_0; + } + if (v_block_type == 33u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_gif__decoder__decode_extension(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (v_block_type == 44u) { + if (self->private_impl.f_delayed_num_decoded_frames) { + self->private_impl.f_delayed_num_decoded_frames = false; + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_gif__decoder__decode_id_part0(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + break; + } else { + if (self->private_impl.f_delayed_num_decoded_frames) { + self->private_impl.f_delayed_num_decoded_frames = false; + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + } + self->private_impl.f_call_sequence = 96u; + break; + } + } + + goto ok; + ok: + self->private_impl.p_decode_up_to_id_part1[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_up_to_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_header + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_header( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c[6] = {0}; + uint32_t v_i = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_header[0]; + if (coro_susp_point) { + memcpy(v_c, self->private_data.s_decode_header[0].v_c, sizeof(v_c)); + v_i = self->private_data.s_decode_header[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (v_i < 6u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c[v_i] = t_0; + } + v_i += 1u; + } + if ((v_c[0u] != 71u) || + (v_c[1u] != 73u) || + (v_c[2u] != 70u) || + (v_c[3u] != 56u) || + ((v_c[4u] != 55u) && (v_c[4u] != 57u)) || + (v_c[5u] != 97u)) { + status = wuffs_base__make_status(wuffs_gif__error__bad_header); + goto exit; + } + + goto ok; + ok: + self->private_impl.p_decode_header[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_header[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + memcpy(self->private_data.s_decode_header[0].v_c, v_c, sizeof(v_c)); + self->private_data.s_decode_header[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_lsd + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_lsd( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_flags = 0; + uint8_t v_background_color_index = 0; + uint32_t v_num_palette_entries = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + uint32_t v_argb = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_lsd[0]; + if (coro_susp_point) { + v_flags = self->private_data.s_decode_lsd[0].v_flags; + v_background_color_index = self->private_data.s_decode_lsd[0].v_background_color_index; + v_num_palette_entries = self->private_data.s_decode_lsd[0].v_num_palette_entries; + v_i = self->private_data.s_decode_lsd[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_lsd[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 8) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + self->private_impl.f_width = t_0; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_lsd[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 8) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + self->private_impl.f_height = t_1; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_flags = t_2; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_background_color_index = t_3; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src++; + v_i = 0u; + self->private_impl.f_has_global_palette = ((v_flags & 128u) != 0u); + if (self->private_impl.f_has_global_palette) { + v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u))); + while (v_i < v_num_palette_entries) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { + t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); + iop_a_src += 3; + } else { + self->private_data.s_decode_lsd[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); + if (num_bits_4 == 16) { + t_4 = ((uint32_t)(*scratch >> 40)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)); + } + } + v_argb = t_4; + } + v_argb |= 4278190080u; + self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u))); + self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u))); + self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u))); + self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u))); + v_i += 1u; + } + if (self->private_impl.f_quirks[2u]) { + if ((v_background_color_index != 0u) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) { + v_j = (4u * ((uint32_t)(v_background_color_index))); + self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0u][(v_j + 0u)])) << 0u) | + (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 1u)])) << 8u) | + (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 2u)])) << 16u) | + (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 3u)])) << 24u)); + } else { + self->private_impl.f_background_color_u32_argb_premul = 77u; + } + } + } + while (v_i < 256u) { + self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = 0u; + self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = 0u; + self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = 0u; + self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = 255u; + v_i += 1u; + } + + goto ok; + ok: + self->private_impl.p_decode_lsd[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_lsd[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_lsd[0].v_flags = v_flags; + self->private_data.s_decode_lsd[0].v_background_color_index = v_background_color_index; + self->private_data.s_decode_lsd[0].v_num_palette_entries = v_num_palette_entries; + self->private_data.s_decode_lsd[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_extension + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_extension( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_label = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_extension[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_label = t_0; + } + if (v_label == 249u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_gif__decoder__decode_gc(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + status = wuffs_base__make_status(NULL); + goto ok; + } else if (v_label == 255u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_gif__decoder__decode_ae(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + status = wuffs_base__make_status(NULL); + goto ok; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + status = wuffs_gif__decoder__skip_blocks(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + + ok: + self->private_impl.p_decode_extension[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_extension[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.skip_blocks + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__skip_blocks( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_block_size = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_skip_blocks[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_block_size = t_0; + } + if (v_block_size == 0u) { + status = wuffs_base__make_status(NULL); + goto ok; + } + self->private_data.s_skip_blocks[0].scratch = ((uint32_t)(v_block_size)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (self->private_data.s_skip_blocks[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_skip_blocks[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_skip_blocks[0].scratch; + } + + ok: + self->private_impl.p_skip_blocks[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_skip_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_ae + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_ae( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_block_size = 0; + bool v_is_animexts = false; + bool v_is_netscape = false; + bool v_is_iccp = false; + bool v_is_xmp = false; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_ae[0]; + if (coro_susp_point) { + v_block_size = self->private_data.s_decode_ae[0].v_block_size; + v_is_animexts = self->private_data.s_decode_ae[0].v_is_animexts; + v_is_netscape = self->private_data.s_decode_ae[0].v_is_netscape; + v_is_iccp = self->private_data.s_decode_ae[0].v_is_iccp; + v_is_xmp = self->private_data.s_decode_ae[0].v_is_xmp; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + do { + if (self->private_impl.f_metadata_fourcc != 0u) { + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_block_size = t_0; + } + if (v_block_size == 0u) { + status = wuffs_base__make_status(NULL); + goto ok; + } + if (v_block_size != 11u) { + self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_ae[0].scratch; + break; + } + v_is_animexts = true; + v_is_netscape = true; + v_is_iccp = true; + v_is_xmp = true; + v_block_size = 0u; + while (v_block_size < 11u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + v_is_animexts = (v_is_animexts && (v_c == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size])); + v_is_netscape = (v_is_netscape && (v_c == WUFFS_GIF__NETSCAPE2DOT0[v_block_size])); + v_is_iccp = (v_is_iccp && (v_c == WUFFS_GIF__ICCRGBG1012[v_block_size])); + v_is_xmp = (v_is_xmp && (v_c == WUFFS_GIF__XMPDATAXMP[v_block_size])); +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_block_size += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + if (v_is_animexts || v_is_netscape) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_block_size = t_2; + } + if (v_block_size != 3u) { + self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_ae[0].scratch; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if (v_c != 1u) { + self->private_data.s_decode_ae[0].scratch = 2u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_ae[0].scratch; + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_ae[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_ae[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 8) { + t_4 = ((uint32_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + self->private_impl.f_num_animation_loops_value = t_4; + } + self->private_impl.f_seen_num_animation_loops_value = true; + if ((0u < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535u)) { + self->private_impl.f_num_animation_loops_value += 1u; + } + } else if (self->private_impl.f_call_sequence >= 32u) { + } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) { + self->private_impl.f_metadata_fourcc = 1229144912u; + self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + self->private_impl.f_call_sequence = 16u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) { + self->private_impl.f_metadata_fourcc = 1481461792u; + self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + self->private_impl.f_call_sequence = 16u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + } while (0); + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + status = wuffs_gif__decoder__skip_blocks(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + + ok: + self->private_impl.p_decode_ae[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_ae[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_ae[0].v_block_size = v_block_size; + self->private_data.s_decode_ae[0].v_is_animexts = v_is_animexts; + self->private_data.s_decode_ae[0].v_is_netscape = v_is_netscape; + self->private_data.s_decode_ae[0].v_is_iccp = v_is_iccp; + self->private_data.s_decode_ae[0].v_is_xmp = v_is_xmp; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_gc + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_gc( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_flags = 0; + uint16_t v_gc_duration_centiseconds = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_gc[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 4u) { + status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_flags = t_1; + } + self->private_impl.f_gc_has_transparent_index = ((v_flags & 1u) != 0u); + v_flags = ((v_flags >> 2u) & 7u); + if (v_flags == 2u) { + self->private_impl.f_gc_disposal = 1u; + } else if ((v_flags == 3u) || (v_flags == 4u)) { + self->private_impl.f_gc_disposal = 2u; + } else { + self->private_impl.f_gc_disposal = 0u; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint16_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_decode_gc[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_gc[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 8) { + t_2 = ((uint16_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + v_gc_duration_centiseconds = t_2; + } + self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + self->private_impl.f_gc_transparent_index = t_3; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + if (v_c != 0u) { + status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control); + goto exit; + } + + goto ok; + ok: + self->private_impl.p_decode_gc[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_gc[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_id_part0 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part0( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_id_part0[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_id_part0[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 8) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + self->private_impl.f_frame_rect_x0 = t_0; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_id_part0[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 8) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + self->private_impl.f_frame_rect_y0 = t_1; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_id_part0[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 8) { + t_2 = ((uint32_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + self->private_impl.f_frame_rect_x1 = t_2; + } + self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_id_part0[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; + if (num_bits_3 == 8) { + t_3 = ((uint32_t)(*scratch)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)) << 56; + } + } + self->private_impl.f_frame_rect_y1 = t_3; + } + self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0; + self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; + self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0; + if ((self->private_impl.f_num_decoded_frame_configs_value == 0u) && ! self->private_impl.f_quirks[4u]) { + self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1); + self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1); + } + + goto ok; + ok: + self->private_impl.p_decode_id_part0[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_id_part0[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_id_part1 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part1( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_flags = 0; + uint8_t v_which_palette = 0; + uint32_t v_num_palette_entries = 0; + uint32_t v_i = 0; + uint32_t v_argb = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint8_t v_lw = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_id_part1[0]; + if (coro_susp_point) { + v_which_palette = self->private_data.s_decode_id_part1[0].v_which_palette; + v_num_palette_entries = self->private_data.s_decode_id_part1[0].v_num_palette_entries; + v_i = self->private_data.s_decode_id_part1[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_flags = t_0; + } + if ((v_flags & 64u) != 0u) { + self->private_impl.f_interlace = 4u; + } else { + self->private_impl.f_interlace = 0u; + } + v_which_palette = 1u; + if ((v_flags & 128u) != 0u) { + v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u))); + v_i = 0u; + while (v_i < v_num_palette_entries) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { + t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); + iop_a_src += 3; + } else { + self->private_data.s_decode_id_part1[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_id_part1[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 16) { + t_1 = ((uint32_t)(*scratch >> 40)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_argb = t_1; + } + v_argb |= 4278190080u; + self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u))); + self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u))); + self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u))); + self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u))); + v_i += 1u; + } + while (v_i < 256u) { + self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = 0u; + self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = 0u; + self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = 0u; + self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = 255u; + v_i += 1u; + } + } else if (self->private_impl.f_quirks[6u] && ! self->private_impl.f_has_global_palette) { + status = wuffs_base__make_status(wuffs_gif__error__bad_palette); + goto exit; + } else if (self->private_impl.f_gc_has_transparent_index) { + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1u], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0u], 1024)); + } else { + v_which_palette = 0u; + } + if (self->private_impl.f_gc_has_transparent_index) { + self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0u)] = 0u; + self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1u)] = 0u; + self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2u)] = 0u; + self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3u)] = 0u; + } + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), + wuffs_base__utility__make_pixel_format(2198077448u), + wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + if (self->private_impl.f_ignored_but_affects_benchmarks) { + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_lw = t_2; + } + if (v_lw > 8u) { + status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width); + goto exit; + } + self->private_impl.f_lzw_pending_literal_width_plus_one = ((uint32_t)((1u + v_lw))); + self->private_impl.f_ignored_but_affects_benchmarks = true; + + ok: + self->private_impl.p_decode_id_part1[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_id_part1[0].v_which_palette = v_which_palette; + self->private_data.s_decode_id_part1[0].v_num_palette_entries = v_num_palette_entries; + self->private_data.s_decode_id_part1[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.decode_id_part2 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__decode_id_part2( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_block_size = 0; + bool v_need_block_size = false; + uint32_t v_n_copied = 0; + uint64_t v_n_compressed = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint64_t v_mark = 0; + wuffs_base__status v_copy_status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_id_part2[0]; + if (coro_susp_point) { + v_block_size = self->private_data.s_decode_id_part2[0].v_block_size; + v_need_block_size = self->private_data.s_decode_id_part2[0].v_need_block_size; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + wuffs_gif__decoder__lzw_init(self); + v_need_block_size = true; + label__outer__continue:; + while (true) { + if (v_need_block_size) { + v_need_block_size = false; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t t_0 = *iop_a_src++; + v_block_size = t_0; + } + } + if (v_block_size == 0u) { + break; + } + while (((uint64_t)(io2_a_src - iop_a_src)) == 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } + if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) { + self->private_impl.f_compressed_ri = 0u; + self->private_impl.f_compressed_wi = 0u; + } + while (self->private_impl.f_compressed_wi <= 3841u) { + v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src))); + if (v_n_compressed <= 0u) { + break; + } + v_n_copied = wuffs_base__io_reader__limited_copy_u32_to_slice( + &iop_a_src, io2_a_src,((uint32_t)(v_n_compressed)), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096)); + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied))); + wuffs_base__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied))); + if (v_block_size > 0u) { + break; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + v_need_block_size = true; + break; + } + v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); + iop_a_src += 1u; + } + while (true) { + if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096u)) { + status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o); + goto exit; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, + self->private_impl.f_compressed_ri, + self->private_impl.f_compressed_wi), + 0u); + v_mark = ((uint64_t)(iop_v_r - io0_v_r)); + u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr)); + wuffs_gif__decoder__lzw_read_from(self, v_r); + iop_v_r = u_r.data.ptr + u_r.meta.ri; + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r)))); + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + if (self->private_impl.f_lzw_output_ri < self->private_impl.f_lzw_output_wi) { + v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_lzw_output, + self->private_impl.f_lzw_output_ri, + self->private_impl.f_lzw_output_wi)); + if (wuffs_base__status__is_error(&v_copy_status)) { + status = v_copy_status; + goto exit; + } + self->private_impl.f_lzw_output_ri = 0u; + self->private_impl.f_lzw_output_wi = 0u; + } + if (self->private_impl.f_lzw_read_from_return_value == 0u) { + self->private_impl.f_ignored_but_affects_benchmarks = false; + if (v_need_block_size || (v_block_size > 0u)) { + self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_id_part2[0].scratch; + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + status = wuffs_gif__decoder__skip_blocks(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + goto label__outer__break; + } else if (self->private_impl.f_lzw_read_from_return_value == 1u) { + continue; + } else if (self->private_impl.f_lzw_read_from_return_value == 2u) { + goto label__outer__continue; + } else if (self->private_impl.f_quirks[3u] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0u)) { + if (v_need_block_size || (v_block_size > 0u)) { + self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_id_part2[0].scratch; + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + status = wuffs_gif__decoder__skip_blocks(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + goto label__outer__break; + } else if (self->private_impl.f_lzw_read_from_return_value == 3u) { + status = wuffs_base__make_status(wuffs_gif__error__truncated_input); + goto exit; + } else if (self->private_impl.f_lzw_read_from_return_value == 4u) { + status = wuffs_base__make_status(wuffs_gif__error__bad_lzw_code); + goto exit; + } + status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o); + goto exit; + } + } + label__outer__break:; + self->private_impl.f_compressed_ri = 0u; + self->private_impl.f_compressed_wi = 0u; + if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) { + status = wuffs_base__make_status(wuffs_base__error__not_enough_data); + goto exit; + } + + ok: + self->private_impl.p_decode_id_part2[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_id_part2[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_id_part2[0].v_block_size = v_block_size; + self->private_data.s_decode_id_part2[0].v_need_block_size = v_need_block_size; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func gif.decoder.copy_to_image_buffer + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gif__decoder__copy_to_image_buffer( + wuffs_gif__decoder* self, + wuffs_base__pixel_buffer* a_pb, + wuffs_base__slice_u8 a_src) { + wuffs_base__slice_u8 v_dst = {0}; + wuffs_base__slice_u8 v_src = {0}; + uint64_t v_width_in_bytes = 0; + uint64_t v_n = 0; + uint64_t v_src_ri = 0; + wuffs_base__pixel_format v_pixfmt = {0}; + uint32_t v_bytes_per_pixel = 0; + uint32_t v_bits_per_pixel = 0; + wuffs_base__table_u8 v_tab = {0}; + uint64_t v_i = 0; + uint64_t v_j = 0; + uint32_t v_replicate_y0 = 0; + uint32_t v_replicate_y1 = 0; + wuffs_base__slice_u8 v_replicate_dst = {0}; + wuffs_base__slice_u8 v_replicate_src = {0}; + + v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb); + v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt); + if ((v_bits_per_pixel & 7u) != 0u) { + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + v_bytes_per_pixel = (v_bits_per_pixel >> 3u); + v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel))); + v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0u); + while (v_src_ri < ((uint64_t)(a_src.len))) { + v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri); + if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) { + if (self->private_impl.f_quirks[3u]) { + return wuffs_base__make_status(NULL); + } + return wuffs_base__make_status(wuffs_base__error__too_much_data); + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0u); + } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel))); + if (v_i < ((uint64_t)(v_dst.len))) { + v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel))); + if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) { + v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j); + } else { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i); + } + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src); + wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u)); + } + if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) { + self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; + if (self->private_impl.f_interlace == 0u) { + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1u); + continue; + } + if ((self->private_impl.f_num_decoded_frames_value == 0u) && ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1u)) { + v_replicate_src = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u); + v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace]))); + v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1); + while (v_replicate_y0 < v_replicate_y1) { + v_replicate_dst = wuffs_base__table_u8__row_u32(v_tab, v_replicate_y0); + wuffs_base__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src); + v_replicate_y0 += 1u; + } + self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1); + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace]))); + while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_interlace -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]); + } + continue; + } + if (((uint64_t)(a_src.len)) == v_src_ri) { + break; + } else if (((uint64_t)(a_src.len)) < v_src_ri) { + return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o); + } + v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x))); + v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri)); + wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n); + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) { + self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace]))); + while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_interlace -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]); + } + continue; + } + if (v_src_ri != ((uint64_t)(a_src.len))) { + return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o); + } + break; + } + return wuffs_base__make_status(NULL); +} + +// -------- func gif.decoder.lzw_init + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__lzw_init( + wuffs_gif__decoder* self) { + uint32_t v_i = 0; + + self->private_impl.f_lzw_literal_width = 8u; + if (self->private_impl.f_lzw_pending_literal_width_plus_one > 0u) { + self->private_impl.f_lzw_literal_width = (self->private_impl.f_lzw_pending_literal_width_plus_one - 1u); + } + self->private_impl.f_lzw_clear_code = (((uint32_t)(1u)) << self->private_impl.f_lzw_literal_width); + self->private_impl.f_lzw_end_code = (self->private_impl.f_lzw_clear_code + 1u); + self->private_impl.f_lzw_save_code = self->private_impl.f_lzw_end_code; + self->private_impl.f_lzw_prev_code = self->private_impl.f_lzw_end_code; + self->private_impl.f_lzw_width = (self->private_impl.f_lzw_literal_width + 1u); + self->private_impl.f_lzw_bits = 0u; + self->private_impl.f_lzw_n_bits = 0u; + self->private_impl.f_lzw_output_ri = 0u; + self->private_impl.f_lzw_output_wi = 0u; + v_i = 0u; + while (v_i < self->private_impl.f_lzw_clear_code) { + self->private_data.f_lzw_lm1s[v_i] = 0u; + self->private_data.f_lzw_suffixes[v_i][0u] = ((uint8_t)(v_i)); + v_i += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func gif.decoder.lzw_read_from + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_gif__decoder__lzw_read_from( + wuffs_gif__decoder* self, + wuffs_base__io_buffer* a_src) { + uint32_t v_clear_code = 0; + uint32_t v_end_code = 0; + uint32_t v_save_code = 0; + uint32_t v_prev_code = 0; + uint32_t v_width = 0; + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_output_wi = 0; + uint32_t v_code = 0; + uint32_t v_c = 0; + uint32_t v_o = 0; + uint32_t v_steps = 0; + uint8_t v_first_byte = 0; + uint16_t v_lm1_b = 0; + uint16_t v_lm1_a = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_clear_code = self->private_impl.f_lzw_clear_code; + v_end_code = self->private_impl.f_lzw_end_code; + v_save_code = self->private_impl.f_lzw_save_code; + v_prev_code = self->private_impl.f_lzw_prev_code; + v_width = self->private_impl.f_lzw_width; + v_bits = self->private_impl.f_lzw_bits; + v_n_bits = self->private_impl.f_lzw_n_bits; + v_output_wi = self->private_impl.f_lzw_output_wi; + while (true) { + if (v_n_bits < v_width) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) { + v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits)); + iop_a_src += ((31u - v_n_bits) >> 3u); + v_n_bits |= 24u; + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + self->private_impl.f_lzw_read_from_return_value = 3u; + } else { + self->private_impl.f_lzw_read_from_return_value = 2u; + } + break; + } else { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + if (v_n_bits >= v_width) { + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + self->private_impl.f_lzw_read_from_return_value = 3u; + } else { + self->private_impl.f_lzw_read_from_return_value = 2u; + } + break; + } else { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + if (v_n_bits < v_width) { + self->private_impl.f_lzw_read_from_return_value = 5u; + break; + } + } + } + } + v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width)); + v_bits >>= v_width; + v_n_bits -= v_width; + if (v_code < v_clear_code) { + self->private_data.f_lzw_output[v_output_wi] = ((uint8_t)(v_code)); + v_output_wi = ((v_output_wi + 1u) & 8191u); + if (v_save_code <= 4095u) { + v_lm1_a = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u); + self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_a; + if ((v_lm1_a % 8u) != 0u) { + self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code]; + memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code])); + self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code)); + } else { + self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); + self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_code)); + } + v_save_code += 1u; + if (v_width < 12u) { + v_width += (1u & (v_save_code >> v_width)); + } + v_prev_code = v_code; + } + } else if (v_code <= v_end_code) { + if (v_code == v_end_code) { + self->private_impl.f_lzw_read_from_return_value = 0u; + break; + } + v_save_code = v_end_code; + v_prev_code = v_end_code; + v_width = (self->private_impl.f_lzw_literal_width + 1u); + } else if (v_code <= v_save_code) { + v_c = v_code; + if (v_code == v_save_code) { + v_c = v_prev_code; + } + v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) & 4294967288u)) & 8191u); + v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lzw_lm1s[v_c]))) & 8191u); + v_steps = (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) >> 3u); + while (true) { + memcpy((self->private_data.f_lzw_output)+(v_o), (self->private_data.f_lzw_suffixes[v_c]), 8u); + if (v_steps <= 0u) { + break; + } + v_steps -= 1u; + v_o = (((uint32_t)(v_o - 8u)) & 8191u); + v_c = ((uint32_t)(self->private_impl.f_lzw_prefixes[v_c])); + } + v_first_byte = self->private_data.f_lzw_suffixes[v_c][0u]; + if (v_code == v_save_code) { + self->private_data.f_lzw_output[v_output_wi] = v_first_byte; + v_output_wi = ((v_output_wi + 1u) & 8191u); + } + if (v_save_code <= 4095u) { + v_lm1_b = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u); + self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_b; + if ((v_lm1_b % 8u) != 0u) { + self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code]; + memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code])); + self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte; + } else { + self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); + self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte)); + } + v_save_code += 1u; + if (v_width < 12u) { + v_width += (1u & (v_save_code >> v_width)); + } + v_prev_code = v_code; + } + } else { + self->private_impl.f_lzw_read_from_return_value = 4u; + break; + } + if (v_output_wi > 4095u) { + self->private_impl.f_lzw_read_from_return_value = 1u; + break; + } + } + if (self->private_impl.f_lzw_read_from_return_value != 2u) { + while (v_n_bits >= 8u) { + v_n_bits -= 8u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + self->private_impl.f_lzw_read_from_return_value = 5u; + break; + } + } + } + self->private_impl.f_lzw_save_code = v_save_code; + self->private_impl.f_lzw_prev_code = v_prev_code; + self->private_impl.f_lzw_width = v_width; + self->private_impl.f_lzw_bits = v_bits; + self->private_impl.f_lzw_n_bits = v_n_bits; + self->private_impl.f_lzw_output_wi = v_output_wi; + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return wuffs_base__make_empty_struct(); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) + +// ---------------- Status Codes Implementations + +const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum"; +const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method"; +const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags"; +const char wuffs_gzip__error__bad_header[] = "#gzip: bad header"; +const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input"; + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gzip__decoder__do_transform_io( + wuffs_gzip__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +// ---------------- VTables + +const wuffs_base__io_transformer__func_ptrs +wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = { + (uint64_t(*)(const void*, + uint32_t))(&wuffs_gzip__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_gzip__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_gzip__decoder__set_quirk), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_gzip__decoder__initialize( + wuffs_gzip__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + { + wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize( + &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + { + wuffs_base__status z = wuffs_deflate__decoder__initialize( + &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = + wuffs_base__io_transformer__vtable_name; + self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = + (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer); + return wuffs_base__make_status(NULL); +} + +wuffs_gzip__decoder* +wuffs_gzip__decoder__alloc(void) { + wuffs_gzip__decoder* x = + (wuffs_gzip__decoder*)(calloc(sizeof(wuffs_gzip__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_gzip__decoder__initialize( + x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_gzip__decoder(void) { + return sizeof(wuffs_gzip__decoder); +} + +// ---------------- Function Implementations + +// -------- func gzip.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gzip__decoder__get_quirk( + const wuffs_gzip__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if ((a_key == 1u) && self->private_impl.f_ignore_checksum) { + return 1u; + } + return 0u; +} + +// -------- func gzip.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gzip__decoder__set_quirk( + wuffs_gzip__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (a_key == 1u) { + self->private_impl.f_ignore_checksum = (a_value > 0u); + return wuffs_base__make_status(NULL); + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func gzip.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_gzip__decoder__history_retain_length( + const wuffs_gzip__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func gzip.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_gzip__decoder__workbuf_len( + const wuffs_gzip__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(1u, 1u); +} + +// -------- func gzip.decoder.transform_io + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_gzip__decoder__transform_io( + wuffs_gzip__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_gzip__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func gzip.decoder.do_transform_io + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_gzip__decoder__do_transform_io( + wuffs_gzip__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_flags = 0; + uint16_t v_xlen = 0; + uint64_t v_mark = 0; + uint32_t v_checksum_got = 0; + uint32_t v_decoded_length_got = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint32_t v_checksum_want = 0; + uint32_t v_decoded_length_want = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; + if (coro_susp_point) { + v_flags = self->private_data.s_do_transform_io[0].v_flags; + v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got; + v_decoded_length_got = self->private_data.s_do_transform_io[0].v_decoded_length_got; + v_checksum_want = self->private_data.s_do_transform_io[0].v_checksum_want; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 31u) { + status = wuffs_base__make_status(wuffs_gzip__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if (v_c != 139u) { + status = wuffs_base__make_status(wuffs_gzip__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + if (v_c != 8u) { + status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_flags = t_3; + } + self->private_data.s_do_transform_io[0].scratch = 6u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_transform_io[0].scratch; + if ((v_flags & 4u) != 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint16_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 8) { + t_4 = ((uint16_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + v_xlen = t_4; + } + self->private_data.s_do_transform_io[0].scratch = ((uint32_t)(v_xlen)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_transform_io[0].scratch; + } + if ((v_flags & 8u) != 0u) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + if (v_c == 0u) { + break; + } + } + } + if ((v_flags & 16u) != 0u) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_c = t_6; + } + if (v_c == 0u) { + break; + } + } + } + if ((v_flags & 2u) != 0u) { + self->private_data.s_do_transform_io[0].scratch = 2u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_transform_io[0].scratch; + } + if ((v_flags & 224u) != 0u) { + status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags); + goto exit; + } + while (true) { + v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); + { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf); + v_status = t_7; + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if ( ! self->private_impl.f_ignore_checksum) { + v_checksum_got = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); + v_decoded_length_got += ((uint32_t)(wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))))); + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12); + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + uint32_t t_8; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8; + if (num_bits_8 == 24) { + t_8 = ((uint32_t)(*scratch)); + break; + } + num_bits_8 += 8u; + *scratch |= ((uint64_t)(num_bits_8)) << 56; + } + } + v_checksum_want = t_8; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + uint32_t t_9; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9; + if (num_bits_9 == 24) { + t_9 = ((uint32_t)(*scratch)); + break; + } + num_bits_9 += 8u; + *scratch |= ((uint64_t)(num_bits_9)) << 56; + } + } + v_decoded_length_want = t_9; + } + if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_got != v_checksum_want) || (v_decoded_length_got != v_decoded_length_want))) { + status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum); + goto exit; + } + + ok: + self->private_impl.p_do_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_transform_io[0].v_flags = v_flags; + self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got; + self->private_data.s_do_transform_io[0].v_decoded_length_got = v_decoded_length_got; + self->private_data.s_do_transform_io[0].v_checksum_want = v_checksum_want; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) + +// ---------------- Status Codes Implementations + +const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker"; +const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker"; +const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker"; +const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker"; +const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker"; +const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header"; +const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker"; +const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table"; +const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table"; +const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input"; +const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding"; +const char wuffs_jpeg__error__unsupported_color_model[] = "#jpeg: unsupported color model"; +const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling"; +const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding"; +const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height"; +const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding"; +const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker"; +const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)"; +const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)"; +const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision"; +const char wuffs_jpeg__error__unsupported_scan_count[] = "#jpeg: unsupported scan count"; +const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state"; + +// ---------------- Private Consts + +static const uint8_t +WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 1, 8, 16, 9, 2, 3, + 10, 17, 24, 32, 25, 18, 11, 4, + 5, 12, 19, 26, 33, 40, 48, 41, + 34, 27, 20, 13, 6, 7, 14, 21, + 28, 35, 42, 49, 56, 57, 50, 43, + 36, 29, 22, 15, 23, 30, 37, 44, + 51, 58, 59, 52, 45, 38, 31, 39, + 46, 53, 60, 61, 54, 47, 55, 62, + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63, 63, +}; + +static const uint8_t +WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = { + 128, 129, 130, 131, 132, 133, 134, 135, + 136, 137, 138, 139, 140, 141, 142, 143, + 144, 145, 146, 147, 148, 149, 150, 151, + 152, 153, 154, 155, 156, 157, 158, 159, + 160, 161, 162, 163, 164, 165, 166, 167, + 168, 169, 170, 171, 172, 173, 174, 175, + 176, 177, 178, 179, 180, 181, 182, 183, + 184, 185, 186, 187, 188, 189, 190, 191, + 192, 193, 194, 195, 196, 197, 198, 199, + 200, 201, 202, 203, 204, 205, 206, 207, + 208, 209, 210, 211, 212, 213, 214, 215, + 216, 217, 218, 219, 220, 221, 222, 223, + 224, 225, 226, 227, 228, 229, 230, 231, + 232, 233, 234, 235, 236, 237, 238, 239, + 240, 241, 242, 243, 244, 245, 246, 247, + 248, 249, 250, 251, 252, 253, 254, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 1, 2, 3, 4, 5, 6, 7, + 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, + 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 67, 68, 69, 70, 71, + 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 84, 85, 86, 87, + 88, 89, 90, 91, 92, 93, 94, 95, + 96, 97, 98, 99, 100, 101, 102, 103, + 104, 105, 106, 107, 108, 109, 110, 111, + 112, 113, 114, 115, 116, 117, 118, 119, + 120, 121, 122, 123, 124, 125, 126, 127, +}; + +static const uint16_t +WUFFS_JPEG__EXTEND[16] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 65535, 65533, 65529, 65521, 65505, 65473, 65409, + 65281, 65025, 64513, 63489, 61441, 57345, 49153, 32769, +}; + +static const uint8_t +WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 1, 5, 1, 1, 1, 1, + 1, 1, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 2, 3, 4, 5, 6, + 7, 8, 9, 10, 11, +}; + +static const uint8_t +WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1, 0, 3, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 0, 0, 0, 0, + 0, 0, 1, 2, 3, 4, 5, 6, + 7, 8, 9, 10, 11, +}; + +static const uint8_t +WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = { + 16, 0, 2, 1, 3, 3, 2, 4, + 3, 5, 5, 4, 4, 0, 0, 1, + 125, 1, 2, 3, 0, 4, 17, 5, + 18, 33, 49, 65, 6, 19, 81, 97, + 7, 34, 113, 20, 50, 129, 145, 161, + 8, 35, 66, 177, 193, 21, 82, 209, + 240, 36, 51, 98, 114, 130, 9, 10, + 22, 23, 24, 25, 26, 37, 38, 39, + 40, 41, 42, 52, 53, 54, 55, 56, + 57, 58, 67, 68, 69, 70, 71, 72, + 73, 74, 83, 84, 85, 86, 87, 88, + 89, 90, 99, 100, 101, 102, 103, 104, + 105, 106, 115, 116, 117, 118, 119, 120, + 121, 122, 131, 132, 133, 134, 135, 136, + 137, 138, 146, 147, 148, 149, 150, 151, + 152, 153, 154, 162, 163, 164, 165, 166, + 167, 168, 169, 170, 178, 179, 180, 181, + 182, 183, 184, 185, 186, 194, 195, 196, + 197, 198, 199, 200, 201, 202, 210, 211, + 212, 213, 214, 215, 216, 217, 218, 225, + 226, 227, 228, 229, 230, 231, 232, 233, + 234, 241, 242, 243, 244, 245, 246, 247, + 248, 249, 250, +}; + +static const uint8_t +WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = { + 17, 0, 2, 1, 2, 4, 4, 3, + 4, 7, 5, 4, 4, 0, 1, 2, + 119, 0, 1, 2, 3, 17, 4, 5, + 33, 49, 6, 18, 65, 81, 7, 97, + 113, 19, 34, 50, 129, 8, 20, 66, + 145, 161, 177, 193, 9, 35, 51, 82, + 240, 21, 98, 114, 209, 10, 22, 36, + 52, 225, 37, 241, 23, 24, 25, 26, + 38, 39, 40, 41, 42, 53, 54, 55, + 56, 57, 58, 67, 68, 69, 70, 71, + 72, 73, 74, 83, 84, 85, 86, 87, + 88, 89, 90, 99, 100, 101, 102, 103, + 104, 105, 106, 115, 116, 117, 118, 119, + 120, 121, 122, 130, 131, 132, 133, 134, + 135, 136, 137, 138, 146, 147, 148, 149, + 150, 151, 152, 153, 154, 162, 163, 164, + 165, 166, 167, 168, 169, 170, 178, 179, + 180, 181, 182, 183, 184, 185, 186, 194, + 195, 196, 197, 198, 199, 200, 201, 202, + 210, 211, 212, 213, 214, 215, 216, 217, + 218, 226, 227, 228, 229, 230, 231, 232, + 233, 234, 242, 243, 244, 245, 246, 247, + 248, 249, 250, +}; + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct__choosy_default( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q); + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct_x86_avx2( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_image_config( + wuffs_jpeg__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dqt( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dri( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_appn( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src, + uint8_t a_marker); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_sof( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__quantize_dimension( + const wuffs_jpeg__decoder* self, + uint32_t a_width, + uint8_t a_h, + uint8_t a_max_incl_h); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_frame_config( + wuffs_jpeg__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_frame( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dht( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__calculate_huff_tables( + wuffs_jpeg__decoder* self, + uint8_t a_tc4_th, + uint32_t a_total_count); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_sos( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__prepare_scan( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__use_default_huffman_table( + wuffs_jpeg__decoder* self, + uint8_t a_tc4_th); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__calculate_single_component_scan_fields( + wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__calculate_multiple_component_scan_fields( + wuffs_jpeg__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__fill_bitstream( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__save_mcu_blocks( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__skip_past_the_next_restart_marker( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__apply_progressive_idct( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__swizzle_gray( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__swizzle_colorful( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__top_left_quants_has_zero( + const wuffs_jpeg__decoder* self, + uint32_t a_q); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu__choosy_default( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_jpeg__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_jpeg__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_jpeg__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_jpeg__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_jpeg__decoder__initialize( + wuffs_jpeg__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.choosy_decode_idct = &wuffs_jpeg__decoder__decode_idct__choosy_default; + self->private_impl.choosy_load_mcu_blocks_for_single_component = &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default; + self->private_impl.choosy_decode_mcu = &wuffs_jpeg__decoder__decode_mcu__choosy_default; + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_jpeg__decoder* +wuffs_jpeg__decoder__alloc(void) { + wuffs_jpeg__decoder* x = + (wuffs_jpeg__decoder*)(calloc(sizeof(wuffs_jpeg__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_jpeg__decoder__initialize( + x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_jpeg__decoder(void) { + return sizeof(wuffs_jpeg__decoder); +} + +// ---------------- Function Implementations + +// -------- func jpeg.decoder.decode_idct + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q) { + return (*self->private_impl.choosy_decode_idct)(self, a_dst_buffer, a_dst_stride, a_q); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct__choosy_default( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q) { + uint32_t v_bq0 = 0; + uint32_t v_bq2 = 0; + uint32_t v_bq4 = 0; + uint32_t v_bq6 = 0; + uint32_t v_ca = 0; + uint32_t v_cb2 = 0; + uint32_t v_cb6 = 0; + uint32_t v_ccp = 0; + uint32_t v_ccm = 0; + uint32_t v_cd0 = 0; + uint32_t v_cd1 = 0; + uint32_t v_cd2 = 0; + uint32_t v_cd3 = 0; + uint32_t v_bq1 = 0; + uint32_t v_bq3 = 0; + uint32_t v_bq5 = 0; + uint32_t v_bq7 = 0; + uint32_t v_ci51 = 0; + uint32_t v_ci53 = 0; + uint32_t v_ci71 = 0; + uint32_t v_ci73 = 0; + uint32_t v_cj = 0; + uint32_t v_ck1 = 0; + uint32_t v_ck3 = 0; + uint32_t v_ck5 = 0; + uint32_t v_ck7 = 0; + uint32_t v_cl51 = 0; + uint32_t v_cl73 = 0; + uint32_t v_in0 = 0; + uint32_t v_in2 = 0; + uint32_t v_in4 = 0; + uint32_t v_in6 = 0; + uint32_t v_ra = 0; + uint32_t v_rb2 = 0; + uint32_t v_rb6 = 0; + uint32_t v_rcp = 0; + uint32_t v_rcm = 0; + uint32_t v_rd0 = 0; + uint32_t v_rd1 = 0; + uint32_t v_rd2 = 0; + uint32_t v_rd3 = 0; + uint32_t v_in1 = 0; + uint32_t v_in3 = 0; + uint32_t v_in5 = 0; + uint32_t v_in7 = 0; + uint32_t v_ri51 = 0; + uint32_t v_ri53 = 0; + uint32_t v_ri71 = 0; + uint32_t v_ri73 = 0; + uint32_t v_rj = 0; + uint32_t v_rk1 = 0; + uint32_t v_rk3 = 0; + uint32_t v_rk5 = 0; + uint32_t v_rk7 = 0; + uint32_t v_rl51 = 0; + uint32_t v_rl73 = 0; + uint32_t v_intermediate[64] = {0}; + + if (8u > a_dst_stride) { + return wuffs_base__make_empty_struct(); + } + if (0u == (self->private_data.f_mcu_blocks[0u][8u] | + self->private_data.f_mcu_blocks[0u][16u] | + self->private_data.f_mcu_blocks[0u][24u] | + self->private_data.f_mcu_blocks[0u][32u] | + self->private_data.f_mcu_blocks[0u][40u] | + self->private_data.f_mcu_blocks[0u][48u] | + self->private_data.f_mcu_blocks[0u][56u])) { + v_intermediate[0u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))) << 2u)); + v_intermediate[8u] = v_intermediate[0u]; + v_intermediate[16u] = v_intermediate[0u]; + v_intermediate[24u] = v_intermediate[0u]; + v_intermediate[32u] = v_intermediate[0u]; + v_intermediate[40u] = v_intermediate[0u]; + v_intermediate[48u] = v_intermediate[0u]; + v_intermediate[56u] = v_intermediate[0u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][16u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][48u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][32u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][8u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][24u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][40u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][56u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[0u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[56u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[8u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[48u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[16u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[40u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[24u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[32u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][9u] | + self->private_data.f_mcu_blocks[0u][17u] | + self->private_data.f_mcu_blocks[0u][25u] | + self->private_data.f_mcu_blocks[0u][33u] | + self->private_data.f_mcu_blocks[0u][41u] | + self->private_data.f_mcu_blocks[0u][49u] | + self->private_data.f_mcu_blocks[0u][57u])) { + v_intermediate[1u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))) << 2u)); + v_intermediate[9u] = v_intermediate[1u]; + v_intermediate[17u] = v_intermediate[1u]; + v_intermediate[25u] = v_intermediate[1u]; + v_intermediate[33u] = v_intermediate[1u]; + v_intermediate[41u] = v_intermediate[1u]; + v_intermediate[49u] = v_intermediate[1u]; + v_intermediate[57u] = v_intermediate[1u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][17u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][49u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][33u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][9u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][25u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][41u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][57u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[1u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[57u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[9u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[49u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[17u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[41u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[25u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[33u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][10u] | + self->private_data.f_mcu_blocks[0u][18u] | + self->private_data.f_mcu_blocks[0u][26u] | + self->private_data.f_mcu_blocks[0u][34u] | + self->private_data.f_mcu_blocks[0u][42u] | + self->private_data.f_mcu_blocks[0u][50u] | + self->private_data.f_mcu_blocks[0u][58u])) { + v_intermediate[2u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))) << 2u)); + v_intermediate[10u] = v_intermediate[2u]; + v_intermediate[18u] = v_intermediate[2u]; + v_intermediate[26u] = v_intermediate[2u]; + v_intermediate[34u] = v_intermediate[2u]; + v_intermediate[42u] = v_intermediate[2u]; + v_intermediate[50u] = v_intermediate[2u]; + v_intermediate[58u] = v_intermediate[2u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][18u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][50u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][34u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][10u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][26u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][42u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][58u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[2u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[58u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[10u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[50u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[18u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[42u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[26u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[34u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][11u] | + self->private_data.f_mcu_blocks[0u][19u] | + self->private_data.f_mcu_blocks[0u][27u] | + self->private_data.f_mcu_blocks[0u][35u] | + self->private_data.f_mcu_blocks[0u][43u] | + self->private_data.f_mcu_blocks[0u][51u] | + self->private_data.f_mcu_blocks[0u][59u])) { + v_intermediate[3u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))) << 2u)); + v_intermediate[11u] = v_intermediate[3u]; + v_intermediate[19u] = v_intermediate[3u]; + v_intermediate[27u] = v_intermediate[3u]; + v_intermediate[35u] = v_intermediate[3u]; + v_intermediate[43u] = v_intermediate[3u]; + v_intermediate[51u] = v_intermediate[3u]; + v_intermediate[59u] = v_intermediate[3u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][19u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][51u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][35u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][11u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][27u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][43u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][59u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[3u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[59u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[11u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[51u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[19u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[43u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[27u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[35u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][12u] | + self->private_data.f_mcu_blocks[0u][20u] | + self->private_data.f_mcu_blocks[0u][28u] | + self->private_data.f_mcu_blocks[0u][36u] | + self->private_data.f_mcu_blocks[0u][44u] | + self->private_data.f_mcu_blocks[0u][52u] | + self->private_data.f_mcu_blocks[0u][60u])) { + v_intermediate[4u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))) << 2u)); + v_intermediate[12u] = v_intermediate[4u]; + v_intermediate[20u] = v_intermediate[4u]; + v_intermediate[28u] = v_intermediate[4u]; + v_intermediate[36u] = v_intermediate[4u]; + v_intermediate[44u] = v_intermediate[4u]; + v_intermediate[52u] = v_intermediate[4u]; + v_intermediate[60u] = v_intermediate[4u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][20u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][52u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][36u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][12u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][28u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][44u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][60u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[4u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[60u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[12u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[52u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[20u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[44u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[28u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[36u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][13u] | + self->private_data.f_mcu_blocks[0u][21u] | + self->private_data.f_mcu_blocks[0u][29u] | + self->private_data.f_mcu_blocks[0u][37u] | + self->private_data.f_mcu_blocks[0u][45u] | + self->private_data.f_mcu_blocks[0u][53u] | + self->private_data.f_mcu_blocks[0u][61u])) { + v_intermediate[5u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))) << 2u)); + v_intermediate[13u] = v_intermediate[5u]; + v_intermediate[21u] = v_intermediate[5u]; + v_intermediate[29u] = v_intermediate[5u]; + v_intermediate[37u] = v_intermediate[5u]; + v_intermediate[45u] = v_intermediate[5u]; + v_intermediate[53u] = v_intermediate[5u]; + v_intermediate[61u] = v_intermediate[5u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][21u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][53u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][37u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][13u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][29u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][45u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][61u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[5u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[61u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[13u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[53u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[21u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[45u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[29u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[37u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][14u] | + self->private_data.f_mcu_blocks[0u][22u] | + self->private_data.f_mcu_blocks[0u][30u] | + self->private_data.f_mcu_blocks[0u][38u] | + self->private_data.f_mcu_blocks[0u][46u] | + self->private_data.f_mcu_blocks[0u][54u] | + self->private_data.f_mcu_blocks[0u][62u])) { + v_intermediate[6u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))) << 2u)); + v_intermediate[14u] = v_intermediate[6u]; + v_intermediate[22u] = v_intermediate[6u]; + v_intermediate[30u] = v_intermediate[6u]; + v_intermediate[38u] = v_intermediate[6u]; + v_intermediate[46u] = v_intermediate[6u]; + v_intermediate[54u] = v_intermediate[6u]; + v_intermediate[62u] = v_intermediate[6u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][22u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][54u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][38u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][14u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][30u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][46u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][62u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[6u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[62u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[14u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[54u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[22u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[46u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[30u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[38u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (self->private_data.f_mcu_blocks[0u][15u] | + self->private_data.f_mcu_blocks[0u][23u] | + self->private_data.f_mcu_blocks[0u][31u] | + self->private_data.f_mcu_blocks[0u][39u] | + self->private_data.f_mcu_blocks[0u][47u] | + self->private_data.f_mcu_blocks[0u][55u] | + self->private_data.f_mcu_blocks[0u][63u])) { + v_intermediate[7u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))) << 2u)); + v_intermediate[15u] = v_intermediate[7u]; + v_intermediate[23u] = v_intermediate[7u]; + v_intermediate[31u] = v_intermediate[7u]; + v_intermediate[39u] = v_intermediate[7u]; + v_intermediate[47u] = v_intermediate[7u]; + v_intermediate[55u] = v_intermediate[7u]; + v_intermediate[63u] = v_intermediate[7u]; + } else { + v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][23u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23u])))); + v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][55u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55u])))); + v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u)); + v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u)))); + v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u)))); + v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))); + v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][39u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39u])))); + v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u)); + v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u)); + v_cd0 = ((uint32_t)(v_ccp + v_cb2)); + v_cd1 = ((uint32_t)(v_ccm + v_cb6)); + v_cd2 = ((uint32_t)(v_ccm - v_cb6)); + v_cd3 = ((uint32_t)(v_ccp - v_cb2)); + v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][15u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15u])))); + v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][31u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31u])))); + v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][47u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47u])))); + v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][63u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63u])))); + v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); + v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); + v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); + v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); + v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u)); + v_ck1 = ((uint32_t)(v_bq1 * 12299u)); + v_ck3 = ((uint32_t)(v_bq3 * 25172u)); + v_ck5 = ((uint32_t)(v_bq5 * 16819u)); + v_ck7 = ((uint32_t)(v_bq7 * 2446u)); + v_ci51 *= 4294964100u; + v_ci53 *= 4294946301u; + v_ci71 *= 4294959923u; + v_ci73 *= 4294951227u; + v_cl51 = ((uint32_t)(v_ci51 + v_cj)); + v_cl73 = ((uint32_t)(v_ci73 + v_cj)); + v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); + v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); + v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); + v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); + v_intermediate[7u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u); + v_intermediate[63u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u); + v_intermediate[15u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u); + v_intermediate[55u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u); + v_intermediate[23u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u); + v_intermediate[47u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u); + v_intermediate[31u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u); + v_intermediate[39u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u); + } + if (0u == (v_intermediate[1u] | + v_intermediate[2u] | + v_intermediate[3u] | + v_intermediate[4u] | + v_intermediate[5u] | + v_intermediate[6u] | + v_intermediate[7u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[0u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[2u]; + v_in6 = v_intermediate[6u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[0u]; + v_in4 = v_intermediate[4u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[1u]; + v_in3 = v_intermediate[3u]; + v_in5 = v_intermediate[5u]; + v_in7 = v_intermediate[7u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[9u] | + v_intermediate[10u] | + v_intermediate[11u] | + v_intermediate[12u] | + v_intermediate[13u] | + v_intermediate[14u] | + v_intermediate[15u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[8u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[10u]; + v_in6 = v_intermediate[14u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[8u]; + v_in4 = v_intermediate[12u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[9u]; + v_in3 = v_intermediate[11u]; + v_in5 = v_intermediate[13u]; + v_in7 = v_intermediate[15u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[17u] | + v_intermediate[18u] | + v_intermediate[19u] | + v_intermediate[20u] | + v_intermediate[21u] | + v_intermediate[22u] | + v_intermediate[23u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[16u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[18u]; + v_in6 = v_intermediate[22u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[16u]; + v_in4 = v_intermediate[20u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[17u]; + v_in3 = v_intermediate[19u]; + v_in5 = v_intermediate[21u]; + v_in7 = v_intermediate[23u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[25u] | + v_intermediate[26u] | + v_intermediate[27u] | + v_intermediate[28u] | + v_intermediate[29u] | + v_intermediate[30u] | + v_intermediate[31u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[24u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[26u]; + v_in6 = v_intermediate[30u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[24u]; + v_in4 = v_intermediate[28u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[25u]; + v_in3 = v_intermediate[27u]; + v_in5 = v_intermediate[29u]; + v_in7 = v_intermediate[31u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[33u] | + v_intermediate[34u] | + v_intermediate[35u] | + v_intermediate[36u] | + v_intermediate[37u] | + v_intermediate[38u] | + v_intermediate[39u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[32u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[34u]; + v_in6 = v_intermediate[38u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[32u]; + v_in4 = v_intermediate[36u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[33u]; + v_in3 = v_intermediate[35u]; + v_in5 = v_intermediate[37u]; + v_in7 = v_intermediate[39u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[41u] | + v_intermediate[42u] | + v_intermediate[43u] | + v_intermediate[44u] | + v_intermediate[45u] | + v_intermediate[46u] | + v_intermediate[47u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[40u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[42u]; + v_in6 = v_intermediate[46u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[40u]; + v_in4 = v_intermediate[44u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[41u]; + v_in3 = v_intermediate[43u]; + v_in5 = v_intermediate[45u]; + v_in7 = v_intermediate[47u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[49u] | + v_intermediate[50u] | + v_intermediate[51u] | + v_intermediate[52u] | + v_intermediate[53u] | + v_intermediate[54u] | + v_intermediate[55u])) { + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[48u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } else { + v_in2 = v_intermediate[50u]; + v_in6 = v_intermediate[54u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[48u]; + v_in4 = v_intermediate[52u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[49u]; + v_in3 = v_intermediate[51u]; + v_in5 = v_intermediate[53u]; + v_in7 = v_intermediate[55u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + } + if (0u == (v_intermediate[57u] | + v_intermediate[58u] | + v_intermediate[59u] | + v_intermediate[60u] | + v_intermediate[61u] | + v_intermediate[62u] | + v_intermediate[63u])) { + if (8u > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[56u] + 16u)) >> 5u) & 1023u)]; + a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u]; + a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u]; + } else { + v_in2 = v_intermediate[58u]; + v_in6 = v_intermediate[62u]; + v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u)); + v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u)))); + v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u)))); + v_in0 = v_intermediate[56u]; + v_in4 = v_intermediate[60u]; + v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u)); + v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u)); + v_rd0 = ((uint32_t)(v_rcp + v_rb2)); + v_rd1 = ((uint32_t)(v_rcm + v_rb6)); + v_rd2 = ((uint32_t)(v_rcm - v_rb6)); + v_rd3 = ((uint32_t)(v_rcp - v_rb2)); + v_in1 = v_intermediate[57u]; + v_in3 = v_intermediate[59u]; + v_in5 = v_intermediate[61u]; + v_in7 = v_intermediate[63u]; + v_ri51 = ((uint32_t)(v_in5 + v_in1)); + v_ri53 = ((uint32_t)(v_in5 + v_in3)); + v_ri71 = ((uint32_t)(v_in7 + v_in1)); + v_ri73 = ((uint32_t)(v_in7 + v_in3)); + v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u)); + v_rk1 = ((uint32_t)(v_in1 * 12299u)); + v_rk3 = ((uint32_t)(v_in3 * 25172u)); + v_rk5 = ((uint32_t)(v_in5 * 16819u)); + v_rk7 = ((uint32_t)(v_in7 * 2446u)); + v_ri51 *= 4294964100u; + v_ri53 *= 4294946301u; + v_ri71 *= 4294959923u; + v_ri73 *= 4294951227u; + v_rl51 = ((uint32_t)(v_ri51 + v_rj)); + v_rl73 = ((uint32_t)(v_ri73 + v_rj)); + v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); + v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); + v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); + v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); + if (8u > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)]; + a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)]; + } + return wuffs_base__make_empty_struct(); +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_avx2 +// -------- func jpeg.decoder.decode_idct_x86_avx2 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__decode_idct_x86_avx2( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_dst_buffer, + uint64_t a_dst_stride, + uint32_t a_q) { + __m256i v_k_0000 = {0}; + __m256i v_k_8080 = {0}; + __m256i v_k_0000_0002 = {0}; + __m256i v_k_0001_FFFF = {0}; + __m256i v_k_0400_0000 = {0}; + __m256i v_k_29CF_1151_D630_1151 = {0}; + __m256i v_k_E333_133E_ADFD_1051 = {0}; + __m256i v_k_E6DC_25A1_1925_25A1 = {0}; + __m256i v_k_ECC1_E333_EFB0_ADFD = {0}; + __m128i v_az_coeffs = {0}; + __m256i v_az_ah00 = {0}; + __m256i v_az_ad00 = {0}; + __m256i v_az_eh00 = {0}; + __m256i v_az_adeh = {0}; + __m256i v_rows01 = {0}; + __m256i v_rows23 = {0}; + __m256i v_rows45 = {0}; + __m256i v_rows67 = {0}; + __m256i v_quants01 = {0}; + __m256i v_quants23 = {0}; + __m256i v_quants45 = {0}; + __m256i v_quants67 = {0}; + __m256i v_rows04 = {0}; + __m256i v_rows31 = {0}; + __m256i v_rows26 = {0}; + __m256i v_rows75 = {0}; + __m256i v_fp_rows62 = {0}; + __m256i v_fp_bq2662ad = {0}; + __m256i v_fp_bq2662eh = {0}; + __m256i v_fp_cb26ad = {0}; + __m256i v_fp_cb26eh = {0}; + __m256i v_fp_rows40pos = {0}; + __m256i v_fp_rows04neg = {0}; + __m256i v_fp_rows0pm4 = {0}; + __m256i v_fp_ccpmad = {0}; + __m256i v_fp_ccpmeh = {0}; + __m256i v_fp_cd01ad = {0}; + __m256i v_fp_cd01eh = {0}; + __m256i v_fp_cd32ad = {0}; + __m256i v_fp_cd32eh = {0}; + __m256i v_fp_sums7351 = {0}; + __m256i v_fp_sums5173 = {0}; + __m256i v_fp_ci73515173ad = {0}; + __m256i v_fp_ci73515173eh = {0}; + __m256i v_fp_cl7351ad = {0}; + __m256i v_fp_cl7351eh = {0}; + __m256i v_fp_rows13 = {0}; + __m256i v_fp_bq7153ad = {0}; + __m256i v_fp_bq7153eh = {0}; + __m256i v_fp_ck75ad = {0}; + __m256i v_fp_ck75eh = {0}; + __m256i v_fp_cl5173ad = {0}; + __m256i v_fp_cl5173eh = {0}; + __m256i v_fp_ck13ad = {0}; + __m256i v_fp_ck13eh = {0}; + __m256i v_intermediate01ad = {0}; + __m256i v_intermediate01eh = {0}; + __m256i v_intermediate01 = {0}; + __m256i v_intermediate32ad = {0}; + __m256i v_intermediate32eh = {0}; + __m256i v_intermediate32 = {0}; + __m256i v_intermediate45ad = {0}; + __m256i v_intermediate45eh = {0}; + __m256i v_intermediate45 = {0}; + __m256i v_intermediate76ad = {0}; + __m256i v_intermediate76eh = {0}; + __m256i v_intermediate76 = {0}; + __m256i v_ita0a1e0e1 = {0}; + __m256i v_ita2a3e2e3 = {0}; + __m256i v_ita4a5e4e5 = {0}; + __m256i v_ita6a7e6e7 = {0}; + __m256i v_ita0c0e0g0 = {0}; + __m256i v_ita1c1e1g1 = {0}; + __m256i v_ita4c4e4g4 = {0}; + __m256i v_ita5c5e5g5 = {0}; + __m256i v_ita0b0e0f0 = {0}; + __m256i v_ita4b4e4f4 = {0}; + __m256i v_itc0d0g0h0 = {0}; + __m256i v_itc4d4g4h4 = {0}; + __m256i v_intermediateae = {0}; + __m256i v_intermediatebf = {0}; + __m256i v_intermediatecg = {0}; + __m256i v_intermediatedh = {0}; + __m256i v_intermediatedb = {0}; + __m256i v_intermediatehf = {0}; + __m256i v_sp_cols62 = {0}; + __m256i v_sp_bq2662ad = {0}; + __m256i v_sp_bq2662eh = {0}; + __m256i v_sp_rb26ad = {0}; + __m256i v_sp_rb26eh = {0}; + __m256i v_sp_cols40pos = {0}; + __m256i v_sp_cols04neg = {0}; + __m256i v_sp_cols0pm4 = {0}; + __m256i v_sp_rcpmad = {0}; + __m256i v_sp_rcpmeh = {0}; + __m256i v_sp_rd01ad = {0}; + __m256i v_sp_rd01eh = {0}; + __m256i v_sp_rd32ad = {0}; + __m256i v_sp_rd32eh = {0}; + __m256i v_sp_sums7351 = {0}; + __m256i v_sp_sums5173 = {0}; + __m256i v_sp_ri73515173ad = {0}; + __m256i v_sp_ri73515173eh = {0}; + __m256i v_sp_rl7351ad = {0}; + __m256i v_sp_rl7351eh = {0}; + __m256i v_sp_cols13 = {0}; + __m256i v_sp_bq7153ad = {0}; + __m256i v_sp_bq7153eh = {0}; + __m256i v_sp_rk75ad = {0}; + __m256i v_sp_rk75eh = {0}; + __m256i v_sp_rl5173ad = {0}; + __m256i v_sp_rl5173eh = {0}; + __m256i v_sp_rk13ad = {0}; + __m256i v_sp_rk13eh = {0}; + __m256i v_final01ad = {0}; + __m256i v_final01eh = {0}; + __m256i v_final01 = {0}; + __m256i v_final32ad = {0}; + __m256i v_final32eh = {0}; + __m256i v_final32 = {0}; + __m256i v_final45ad = {0}; + __m256i v_final45eh = {0}; + __m256i v_final45 = {0}; + __m256i v_final76ad = {0}; + __m256i v_final76eh = {0}; + __m256i v_final76 = {0}; + __m256i v_fta0a1e0e1 = {0}; + __m256i v_fta2a3e2e3 = {0}; + __m256i v_fta4a5e4e5 = {0}; + __m256i v_fta6a7e6e7 = {0}; + __m256i v_fta0c0e0g0 = {0}; + __m256i v_fta1c1e1g1 = {0}; + __m256i v_fta4c4e4g4 = {0}; + __m256i v_fta5c5e5g5 = {0}; + __m256i v_fta0b0e0f0 = {0}; + __m256i v_ftc0d0g0h0 = {0}; + __m256i v_fta4b4e4f4 = {0}; + __m256i v_ftc4d4g4h4 = {0}; + __m256i v_finalae = {0}; + __m256i v_finalbf = {0}; + __m256i v_finalcg = {0}; + __m256i v_finaldh = {0}; + __m256i v_final0145 = {0}; + __m256i v_final2367 = {0}; + uint64_t v_final0 = 0; + uint64_t v_final1 = 0; + uint64_t v_final2 = 0; + uint64_t v_final3 = 0; + uint64_t v_final4 = 0; + uint64_t v_final5 = 0; + uint64_t v_final6 = 0; + uint64_t v_final7 = 0; + wuffs_base__slice_u8 v_remaining = {0}; + + if (8u > a_dst_stride) { + return wuffs_base__make_empty_struct(); + } + v_k_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u)); + v_k_8080 = _mm256_set_epi16((int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u)); + v_k_0000_0002 = _mm256_set_epi16((int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u)); + v_k_0001_FFFF = _mm256_set_epi16((int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u)); + v_k_0400_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u)); + v_k_29CF_1151_D630_1151 = _mm256_set_epi16((int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u)); + v_k_E333_133E_ADFD_1051 = _mm256_set_epi16((int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u)); + v_k_E6DC_25A1_1925_25A1 = _mm256_set_epi16((int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u)); + v_k_ECC1_E333_EFB0_ADFD = _mm256_set_epi16((int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u)); + do { + if (0u == (wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)) | wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)))) { + v_az_coeffs = _mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 24u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 40u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 56u))); + if (0u == ((uint64_t)(_mm_cvtsi128_si64(_mm_packs_epi16(v_az_coeffs, v_az_coeffs))))) { + v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u)); + v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u)); + v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01); + v_az_ah00 = _mm256_slli_epi16(v_rows01, (int32_t)(2u)); + v_az_ad00 = _mm256_unpacklo_epi16(v_az_ah00, v_az_ah00); + v_az_eh00 = _mm256_unpackhi_epi16(v_az_ah00, v_az_ah00); + v_az_adeh = _mm256_inserti128_si256(v_az_ad00, _mm256_castsi256_si128(v_az_eh00), (int32_t)(1u)); + v_intermediateae = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(0u)); + v_intermediatebf = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(85u)); + v_intermediatecg = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(170u)); + v_intermediatedh = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(255u)); + break; + } + } + v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u)); + v_rows23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)); + v_rows45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u)); + v_rows67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u)); + v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u)); + v_quants23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 16u)); + v_quants45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 32u)); + v_quants67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 48u)); + v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01); + v_rows23 = _mm256_mullo_epi16(v_rows23, v_quants23); + v_rows45 = _mm256_mullo_epi16(v_rows45, v_quants45); + v_rows67 = _mm256_mullo_epi16(v_rows67, v_quants67); + v_rows04 = _mm256_permute2x128_si256(v_rows01, v_rows45, (int32_t)(32u)); + v_rows31 = _mm256_permute2x128_si256(v_rows23, v_rows01, (int32_t)(49u)); + v_rows26 = _mm256_permute2x128_si256(v_rows23, v_rows67, (int32_t)(32u)); + v_rows75 = _mm256_permute2x128_si256(v_rows67, v_rows45, (int32_t)(49u)); + v_fp_rows62 = _mm256_permute2x128_si256(v_rows26, v_rows26, (int32_t)(1u)); + v_fp_bq2662ad = _mm256_unpacklo_epi16(v_rows26, v_fp_rows62); + v_fp_bq2662eh = _mm256_unpackhi_epi16(v_rows26, v_fp_rows62); + v_fp_cb26ad = _mm256_madd_epi16(v_fp_bq2662ad, v_k_29CF_1151_D630_1151); + v_fp_cb26eh = _mm256_madd_epi16(v_fp_bq2662eh, v_k_29CF_1151_D630_1151); + v_fp_rows40pos = _mm256_permute2x128_si256(v_rows04, v_rows04, (int32_t)(1u)); + v_fp_rows04neg = _mm256_sign_epi16(v_rows04, v_k_0001_FFFF); + v_fp_rows0pm4 = _mm256_add_epi16(v_fp_rows40pos, v_fp_rows04neg); + v_fp_ccpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u)); + v_fp_ccpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u)); + v_fp_cd01ad = _mm256_add_epi32(v_fp_ccpmad, v_fp_cb26ad); + v_fp_cd01eh = _mm256_add_epi32(v_fp_ccpmeh, v_fp_cb26eh); + v_fp_cd32ad = _mm256_sub_epi32(v_fp_ccpmad, v_fp_cb26ad); + v_fp_cd32eh = _mm256_sub_epi32(v_fp_ccpmeh, v_fp_cb26eh); + v_fp_sums7351 = _mm256_add_epi16(v_rows75, v_rows31); + v_fp_sums5173 = _mm256_permute2x128_si256(v_fp_sums7351, v_fp_sums7351, (int32_t)(1u)); + v_fp_ci73515173ad = _mm256_unpacklo_epi16(v_fp_sums7351, v_fp_sums5173); + v_fp_ci73515173eh = _mm256_unpackhi_epi16(v_fp_sums7351, v_fp_sums5173); + v_fp_cl7351ad = _mm256_madd_epi16(v_fp_ci73515173ad, v_k_E6DC_25A1_1925_25A1); + v_fp_cl7351eh = _mm256_madd_epi16(v_fp_ci73515173eh, v_k_E6DC_25A1_1925_25A1); + v_fp_rows13 = _mm256_permute2x128_si256(v_rows31, v_rows31, (int32_t)(1u)); + v_fp_bq7153ad = _mm256_unpacklo_epi16(v_rows75, v_fp_rows13); + v_fp_bq7153eh = _mm256_unpackhi_epi16(v_rows75, v_fp_rows13); + v_fp_ck75ad = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351ad); + v_fp_ck75eh = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351eh); + v_fp_cl5173ad = _mm256_permute2x128_si256(v_fp_cl7351ad, v_fp_cl7351ad, (int32_t)(1u)); + v_fp_cl5173eh = _mm256_permute2x128_si256(v_fp_cl7351eh, v_fp_cl7351eh, (int32_t)(1u)); + v_fp_ck13ad = _mm256_add_epi32(v_fp_cl5173ad, _mm256_madd_epi16(v_fp_bq7153ad, v_k_E333_133E_ADFD_1051)); + v_fp_ck13eh = _mm256_add_epi32(v_fp_cl5173eh, _mm256_madd_epi16(v_fp_bq7153eh, v_k_E333_133E_ADFD_1051)); + v_intermediate01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u)); + v_intermediate01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u)); + v_intermediate01 = _mm256_packs_epi32(v_intermediate01ad, v_intermediate01eh); + v_intermediate32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u)); + v_intermediate32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u)); + v_intermediate32 = _mm256_packs_epi32(v_intermediate32ad, v_intermediate32eh); + v_intermediate45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u)); + v_intermediate45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u)); + v_intermediate45 = _mm256_packs_epi32(v_intermediate45ad, v_intermediate45eh); + v_intermediate76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u)); + v_intermediate76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u)); + v_intermediate76 = _mm256_packs_epi32(v_intermediate76ad, v_intermediate76eh); + v_ita0a1e0e1 = _mm256_permute4x64_epi64(v_intermediate01, (int32_t)(216u)); + v_ita2a3e2e3 = _mm256_permute4x64_epi64(v_intermediate32, (int32_t)(114u)); + v_ita4a5e4e5 = _mm256_permute4x64_epi64(v_intermediate45, (int32_t)(216u)); + v_ita6a7e6e7 = _mm256_permute4x64_epi64(v_intermediate76, (int32_t)(114u)); + v_ita0c0e0g0 = _mm256_unpacklo_epi16(v_ita0a1e0e1, v_ita2a3e2e3); + v_ita1c1e1g1 = _mm256_unpackhi_epi16(v_ita0a1e0e1, v_ita2a3e2e3); + v_ita4c4e4g4 = _mm256_unpacklo_epi16(v_ita4a5e4e5, v_ita6a7e6e7); + v_ita5c5e5g5 = _mm256_unpackhi_epi16(v_ita4a5e4e5, v_ita6a7e6e7); + v_ita0b0e0f0 = _mm256_unpacklo_epi16(v_ita0c0e0g0, v_ita1c1e1g1); + v_itc0d0g0h0 = _mm256_unpackhi_epi16(v_ita0c0e0g0, v_ita1c1e1g1); + v_ita4b4e4f4 = _mm256_unpacklo_epi16(v_ita4c4e4g4, v_ita5c5e5g5); + v_itc4d4g4h4 = _mm256_unpackhi_epi16(v_ita4c4e4g4, v_ita5c5e5g5); + v_intermediateae = _mm256_unpacklo_epi64(v_ita0b0e0f0, v_ita4b4e4f4); + v_intermediatebf = _mm256_unpackhi_epi64(v_ita0b0e0f0, v_ita4b4e4f4); + v_intermediatecg = _mm256_unpacklo_epi64(v_itc0d0g0h0, v_itc4d4g4h4); + v_intermediatedh = _mm256_unpackhi_epi64(v_itc0d0g0h0, v_itc4d4g4h4); + } while (0); + v_intermediatedb = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(32u)); + v_intermediatehf = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(49u)); + v_sp_cols62 = _mm256_permute2x128_si256(v_intermediatecg, v_intermediatecg, (int32_t)(1u)); + v_sp_bq2662ad = _mm256_unpacklo_epi16(v_intermediatecg, v_sp_cols62); + v_sp_bq2662eh = _mm256_unpackhi_epi16(v_intermediatecg, v_sp_cols62); + v_sp_rb26ad = _mm256_madd_epi16(v_sp_bq2662ad, v_k_29CF_1151_D630_1151); + v_sp_rb26eh = _mm256_madd_epi16(v_sp_bq2662eh, v_k_29CF_1151_D630_1151); + v_sp_cols40pos = _mm256_permute2x128_si256(v_intermediateae, v_intermediateae, (int32_t)(1u)); + v_sp_cols04neg = _mm256_sign_epi16(v_intermediateae, v_k_0001_FFFF); + v_sp_cols0pm4 = _mm256_add_epi16(v_sp_cols40pos, v_sp_cols04neg); + v_sp_rcpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u)); + v_sp_rcpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u)); + v_sp_rd01ad = _mm256_add_epi32(v_sp_rcpmad, v_sp_rb26ad); + v_sp_rd01eh = _mm256_add_epi32(v_sp_rcpmeh, v_sp_rb26eh); + v_sp_rd32ad = _mm256_sub_epi32(v_sp_rcpmad, v_sp_rb26ad); + v_sp_rd32eh = _mm256_sub_epi32(v_sp_rcpmeh, v_sp_rb26eh); + v_sp_sums7351 = _mm256_add_epi16(v_intermediatehf, v_intermediatedb); + v_sp_sums5173 = _mm256_permute2x128_si256(v_sp_sums7351, v_sp_sums7351, (int32_t)(1u)); + v_sp_ri73515173ad = _mm256_unpacklo_epi16(v_sp_sums7351, v_sp_sums5173); + v_sp_ri73515173eh = _mm256_unpackhi_epi16(v_sp_sums7351, v_sp_sums5173); + v_sp_rl7351ad = _mm256_madd_epi16(v_sp_ri73515173ad, v_k_E6DC_25A1_1925_25A1); + v_sp_rl7351eh = _mm256_madd_epi16(v_sp_ri73515173eh, v_k_E6DC_25A1_1925_25A1); + v_sp_cols13 = _mm256_permute2x128_si256(v_intermediatedb, v_intermediatedb, (int32_t)(1u)); + v_sp_bq7153ad = _mm256_unpacklo_epi16(v_intermediatehf, v_sp_cols13); + v_sp_bq7153eh = _mm256_unpackhi_epi16(v_intermediatehf, v_sp_cols13); + v_sp_rk75ad = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351ad); + v_sp_rk75eh = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351eh); + v_sp_rl5173ad = _mm256_permute2x128_si256(v_sp_rl7351ad, v_sp_rl7351ad, (int32_t)(1u)); + v_sp_rl5173eh = _mm256_permute2x128_si256(v_sp_rl7351eh, v_sp_rl7351eh, (int32_t)(1u)); + v_sp_rk13ad = _mm256_add_epi32(v_sp_rl5173ad, _mm256_madd_epi16(v_sp_bq7153ad, v_k_E333_133E_ADFD_1051)); + v_sp_rk13eh = _mm256_add_epi32(v_sp_rl5173eh, _mm256_madd_epi16(v_sp_bq7153eh, v_k_E333_133E_ADFD_1051)); + v_final01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u)); + v_final01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u)); + v_final01 = _mm256_packs_epi32(v_final01ad, v_final01eh); + v_final32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u)); + v_final32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u)); + v_final32 = _mm256_packs_epi32(v_final32ad, v_final32eh); + v_final45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u)); + v_final45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u)); + v_final45 = _mm256_packs_epi32(v_final45ad, v_final45eh); + v_final76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u)); + v_final76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u)); + v_final76 = _mm256_packs_epi32(v_final76ad, v_final76eh); + v_fta0a1e0e1 = _mm256_permute4x64_epi64(v_final01, (int32_t)(216u)); + v_fta2a3e2e3 = _mm256_permute4x64_epi64(v_final32, (int32_t)(114u)); + v_fta4a5e4e5 = _mm256_permute4x64_epi64(v_final45, (int32_t)(216u)); + v_fta6a7e6e7 = _mm256_permute4x64_epi64(v_final76, (int32_t)(114u)); + v_fta0c0e0g0 = _mm256_unpacklo_epi16(v_fta0a1e0e1, v_fta2a3e2e3); + v_fta1c1e1g1 = _mm256_unpackhi_epi16(v_fta0a1e0e1, v_fta2a3e2e3); + v_fta4c4e4g4 = _mm256_unpacklo_epi16(v_fta4a5e4e5, v_fta6a7e6e7); + v_fta5c5e5g5 = _mm256_unpackhi_epi16(v_fta4a5e4e5, v_fta6a7e6e7); + v_fta0b0e0f0 = _mm256_unpacklo_epi16(v_fta0c0e0g0, v_fta1c1e1g1); + v_ftc0d0g0h0 = _mm256_unpackhi_epi16(v_fta0c0e0g0, v_fta1c1e1g1); + v_fta4b4e4f4 = _mm256_unpacklo_epi16(v_fta4c4e4g4, v_fta5c5e5g5); + v_ftc4d4g4h4 = _mm256_unpackhi_epi16(v_fta4c4e4g4, v_fta5c5e5g5); + v_finalae = _mm256_unpacklo_epi64(v_fta0b0e0f0, v_fta4b4e4f4); + v_finalbf = _mm256_unpackhi_epi64(v_fta0b0e0f0, v_fta4b4e4f4); + v_finalcg = _mm256_unpacklo_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4); + v_finaldh = _mm256_unpackhi_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4); + v_final0145 = _mm256_add_epi8(_mm256_packs_epi16(v_finalae, v_finalbf), v_k_8080); + v_final2367 = _mm256_add_epi8(_mm256_packs_epi16(v_finalcg, v_finaldh), v_k_8080); + v_final0 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(0u)))); + v_final1 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(1u)))); + v_final2 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(0u)))); + v_final3 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(1u)))); + v_final4 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(2u)))); + v_final5 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(3u)))); + v_final6 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(2u)))); + v_final7 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(3u)))); + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final0); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final1); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final2); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final3); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final4); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final5); + a_dst_buffer = v_remaining; + if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final6); + a_dst_buffer = v_remaining; + if (8u > ((uint64_t)(a_dst_buffer.len))) { + return wuffs_base__make_empty_struct(); + } + wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final7); + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) +// ‼ WUFFS MULTI-FILE SECTION -x86_avx2 + +// -------- func jpeg.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__get_quirk( + const wuffs_jpeg__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func jpeg.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__set_quirk( + wuffs_jpeg__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func jpeg.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_image_config( + wuffs_jpeg__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func jpeg.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_image_config( + wuffs_jpeg__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_marker = 0; + uint32_t v_pixfmt = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + if (coro_susp_point) { + v_marker = self->private_data.s_do_decode_image_config[0].v_marker; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 255u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if (v_c != 216u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_header); + goto exit; + } + while (true) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + if (v_c == 255u) { + break; + } + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if (v_c != 255u) { + v_marker = v_c; + break; + } + } + if (v_marker == 0u) { + continue; + } else if ((208u <= v_marker) && (v_marker <= 217u)) { + if (v_marker <= 215u) { + continue; + } + } else { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); + if (num_bits_4 == 8) { + t_4 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)); + } + } + self->private_impl.f_payload_length = t_4; + } + if (self->private_impl.f_payload_length < 2u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); + goto exit; + } + self->private_impl.f_payload_length -= 2u; + } + if (v_marker < 192u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } else if (v_marker < 208u) { + if (v_marker <= 194u) { + if (self->private_impl.f_sof_marker != 0u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + self->private_impl.f_sof_marker = v_marker; + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + status = wuffs_jpeg__decoder__decode_sof(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + break; + } else if (v_marker == 195u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding); + goto exit; + } else if (v_marker == 196u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } else if ((197u <= v_marker) && (v_marker <= 199u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding); + goto exit; + } else if (v_marker == 200u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding); + goto exit; + } + } else if (v_marker < 224u) { + if (v_marker < 218u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); + goto exit; + } else if (v_marker == 218u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } else if (v_marker == 219u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + status = wuffs_jpeg__decoder__decode_dqt(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else if (v_marker == 221u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_jpeg__decoder__decode_dri(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } + } else if (v_marker < 240u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + status = wuffs_jpeg__decoder__decode_appn(self, a_src, v_marker); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else { + if (v_marker == 254u) { + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } + } + self->private_data.s_do_decode_image_config[0].scratch = self->private_impl.f_payload_length; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + self->private_impl.f_payload_length = 0u; + } + self->private_impl.choosy_decode_idct = ( +#if defined(WUFFS_BASE__CPU_ARCH__X86_64) + wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_jpeg__decoder__decode_idct_x86_avx2 : +#endif + self->private_impl.choosy_decode_idct); + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + if (a_dst != NULL) { + v_pixfmt = 536870920u; + if (self->private_impl.f_num_components > 1u) { + v_pixfmt = 2415954056u; + } + wuffs_base__image_config__set( + a_dst, + v_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + true); + } + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_image_config[0].v_marker = v_marker; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_dqt + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dqt( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_q = 0; + uint32_t v_i = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_dqt[0]; + if (coro_susp_point) { + v_q = self->private_data.s_decode_dqt[0].v_q; + v_i = self->private_data.s_decode_dqt[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (self->private_impl.f_payload_length > 0u) { + self->private_impl.f_payload_length -= 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if ((v_c & 15u) > 3u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker); + goto exit; + } + v_q = (v_c & 15u); + if ((v_c >> 4u) == 1u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision); + goto exit; + } else if (((v_c >> 4u) > 1u) || (self->private_impl.f_payload_length < 64u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker); + goto exit; + } + self->private_impl.f_payload_length -= 64u; + v_i = 0u; + while (v_i < 64u) { + v_i += 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint16_t t_1 = *iop_a_src++; + self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1; + } + } + self->private_impl.f_seen_dqt[v_q] = true; + if (self->private_impl.f_sof_marker == 0u) { + v_i = 0u; + while (v_i < 64u) { + self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i]; + v_i += 1u; + } + self->private_impl.f_saved_seen_dqt[v_q] = true; + } + } + + goto ok; + ok: + self->private_impl.p_decode_dqt[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_dqt[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_dqt[0].v_q = v_q; + self->private_data.s_decode_dqt[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_dri + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dri( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_dri[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_payload_length != 2u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker); + goto exit; + } + self->private_impl.f_payload_length = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint16_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_decode_dri[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_dri[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 8) { + t_0 = ((uint16_t)(*scratch >> 48)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + self->private_impl.f_restart_interval = t_0; + } + if (self->private_impl.f_sof_marker == 0u) { + self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval; + } + + goto ok; + ok: + self->private_impl.p_decode_dri[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_dri[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_appn + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_appn( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src, + uint8_t a_marker) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c8 = 0; + uint32_t v_c32 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_appn[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + do { + if (a_marker == 224u) { + if (self->private_impl.f_payload_length >= 5u) { + self->private_impl.f_payload_length -= 5u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_appn[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_c32 = t_0; + } + if (v_c32 != 1179207242u) { + self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 1u)); + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c8 = t_1; + } + self->private_impl.f_is_jfif = (v_c8 == 0u); + } + } else if (a_marker == 238u) { + if (self->private_impl.f_payload_length >= 12u) { + self->private_impl.f_payload_length -= 12u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_appn[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + v_c32 = t_2; + } + if (v_c32 != 1651467329u) { + self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 8u)); + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_appn[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)) << 56; + } + } + v_c32 = t_3; + } + if ((255u & v_c32) != 101u) { + self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 4u)); + break; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_appn[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 24) { + t_4 = ((uint32_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + v_c32 = t_4; + } + if ((v_c32 >> 24u) == 0u) { + self->private_impl.f_is_adobe = 1u; + } else { + self->private_impl.f_is_adobe = 2u; + } + } + } + } while (0); + self->private_data.s_decode_appn[0].scratch = self->private_impl.f_payload_length; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (self->private_data.s_decode_appn[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_appn[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_appn[0].scratch; + self->private_impl.f_payload_length = 0u; + + goto ok; + ok: + self->private_impl.p_decode_appn[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_appn[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_sof + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_sof( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_comp_h = 0; + uint8_t v_comp_v = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + bool v_has_h24 = false; + bool v_has_h3 = false; + bool v_has_v24 = false; + bool v_has_v3 = false; + uint32_t v_upper_bound = 0; + uint64_t v_wh0 = 0; + uint64_t v_wh1 = 0; + uint64_t v_wh2 = 0; + uint64_t v_wh3 = 0; + uint64_t v_progressive = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_sof[0]; + if (coro_susp_point) { + v_i = self->private_data.s_decode_sof[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_payload_length < 6u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + self->private_impl.f_payload_length -= 6u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c == 8u) { + } else if (v_c == 12u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits); + goto exit; + } else if (v_c == 16u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_sof[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 8) { + t_1 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + self->private_impl.f_height = t_1; + } + if (self->private_impl.f_height == 0u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_sof[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); + if (num_bits_2 == 8) { + t_2 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)); + } + } + self->private_impl.f_width = t_2; + } + if (self->private_impl.f_width == 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if ((v_c == 0u) || (v_c > 4u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } else if (v_c == 2u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_color_model); + goto exit; + } + self->private_impl.f_num_components = ((uint32_t)(v_c)); + if (self->private_impl.f_payload_length != (3u * self->private_impl.f_num_components)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + self->private_impl.f_payload_length = 0u; + v_i = 0u; + while (v_i < self->private_impl.f_num_components) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + self->private_impl.f_components_c[v_i] = t_4; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + v_comp_h = (v_c >> 4u); + v_comp_v = (v_c & 15u); + if ((v_comp_h == 0u) || + (v_comp_h > 4u) || + (v_comp_v == 0u) || + (v_comp_v > 4u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + self->private_impl.f_components_h[v_i] = v_comp_h; + if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) { + self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i]; + } + self->private_impl.f_components_v[v_i] = v_comp_v; + if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) { + self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i]; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_c = t_6; + } + if (v_c >= 4u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + self->private_impl.f_components_tq[v_i] = v_c; + v_j = 0u; + while (v_j < v_i) { + if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } + v_j += 1u; + } + v_i += 1u; + } + if (self->private_impl.f_num_components == 1u) { + self->private_impl.f_max_incl_components_h = 1u; + self->private_impl.f_max_incl_components_v = 1u; + self->private_impl.f_components_h[0u] = 1u; + self->private_impl.f_components_v[0u] = 1u; + } else { + v_has_h24 = false; + v_has_h3 = false; + v_has_v24 = false; + v_has_v3 = false; + v_i = 0u; + while (v_i < self->private_impl.f_num_components) { + v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2u) || (self->private_impl.f_components_h[v_i] == 4u)); + v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3u)); + v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2u) || (self->private_impl.f_components_v[v_i] == 4u)); + v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3u)); + v_i += 1u; + } + if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling); + goto exit; + } + if (self->private_impl.f_num_components == 4u) { + self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe < 2u); + } else { + if (self->private_impl.f_is_jfif) { + self->private_impl.f_is_rgb_or_cmyk = false; + } else if (self->private_impl.f_is_adobe > 0u) { + self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe == 1u); + } else { + self->private_impl.f_is_rgb_or_cmyk = ((self->private_impl.f_components_c[0u] == 82u) && (self->private_impl.f_components_c[1u] == 71u) && (self->private_impl.f_components_c[2u] == 66u)); + } + } + } + self->private_impl.f_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, 1u, self->private_impl.f_max_incl_components_h); + self->private_impl.f_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, 1u, self->private_impl.f_max_incl_components_v); + v_upper_bound = 65544u; + self->private_impl.f_components_workbuf_widths[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0u])))); + self->private_impl.f_components_workbuf_widths[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1u])))); + self->private_impl.f_components_workbuf_widths[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2u])))); + self->private_impl.f_components_workbuf_widths[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3u])))); + self->private_impl.f_components_workbuf_heights[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0u])))); + self->private_impl.f_components_workbuf_heights[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1u])))); + self->private_impl.f_components_workbuf_heights[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2u])))); + self->private_impl.f_components_workbuf_heights[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3u])))); + v_wh0 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0u]))); + v_wh1 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[1u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1u]))); + v_wh2 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[2u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2u]))); + v_wh3 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[3u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3u]))); + v_progressive = 0u; + if (self->private_impl.f_sof_marker >= 194u) { + v_progressive = 2u; + v_i = 0u; + while (v_i < 4u) { + v_j = 0u; + while (v_j < 10u) { + self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u; + v_j += 1u; + } + v_i += 1u; + } + } + self->private_impl.f_components_workbuf_offsets[0u] = 0u; + self->private_impl.f_components_workbuf_offsets[1u] = (self->private_impl.f_components_workbuf_offsets[0u] + v_wh0); + self->private_impl.f_components_workbuf_offsets[2u] = (self->private_impl.f_components_workbuf_offsets[1u] + v_wh1); + self->private_impl.f_components_workbuf_offsets[3u] = (self->private_impl.f_components_workbuf_offsets[2u] + v_wh2); + self->private_impl.f_components_workbuf_offsets[4u] = (self->private_impl.f_components_workbuf_offsets[3u] + v_wh3); + self->private_impl.f_components_workbuf_offsets[5u] = (self->private_impl.f_components_workbuf_offsets[4u] + (v_wh0 * v_progressive)); + self->private_impl.f_components_workbuf_offsets[6u] = (self->private_impl.f_components_workbuf_offsets[5u] + (v_wh1 * v_progressive)); + self->private_impl.f_components_workbuf_offsets[7u] = (self->private_impl.f_components_workbuf_offsets[6u] + (v_wh2 * v_progressive)); + self->private_impl.f_components_workbuf_offsets[8u] = (self->private_impl.f_components_workbuf_offsets[7u] + (v_wh3 * v_progressive)); + + goto ok; + ok: + self->private_impl.p_decode_sof[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_sof[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_sof[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.quantize_dimension + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__quantize_dimension( + const wuffs_jpeg__decoder* self, + uint32_t a_width, + uint8_t a_h, + uint8_t a_max_incl_h) { + uint32_t v_ratio = 0; + + v_ratio = 0u; + if (a_h > 0u) { + v_ratio = ((uint32_t)((a_max_incl_h / a_h))); + } + if (v_ratio == 1u) { + return ((a_width + 7u) / 8u); + } else if (v_ratio == 2u) { + return ((a_width + 15u) / 16u); + } else if (v_ratio == 3u) { + return ((a_width + 23u) / 24u); + } + return ((a_width + 31u) / 32u); +} + +// -------- func jpeg.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_frame_config( + wuffs_jpeg__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func jpeg.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_frame_config( + wuffs_jpeg__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + self->private_impl.f_frame_config_io_position, + 0u, + true, + false, + 4278190080u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__decode_frame( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_ddf_status = wuffs_base__make_status(NULL); + wuffs_base__status v_swizzle_status = wuffs_base__make_status(NULL); + uint32_t v_scan_count = 0; + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + v_scan_count = self->private_impl.f_scan_count; + { + wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_ddf_status = t_0; + } + if ((v_ddf_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + v_ddf_status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); + } + if (wuffs_base__status__is_error(&v_ddf_status) || (v_scan_count < self->private_impl.f_scan_count)) { + if (self->private_impl.f_sof_marker >= 194u) { + wuffs_jpeg__decoder__apply_progressive_idct(self, a_workbuf); + } + if (self->private_impl.f_num_components == 1u) { + v_swizzle_status = wuffs_jpeg__decoder__swizzle_gray(self, a_dst, a_workbuf); + } else { + v_swizzle_status = wuffs_jpeg__decoder__swizzle_colorful(self, a_dst, a_workbuf); + } + if (wuffs_base__status__is_error(&v_ddf_status)) { + status = v_ddf_status; + goto exit; + } else if (wuffs_base__status__is_error(&v_swizzle_status)) { + status = v_swizzle_status; + goto exit; + } + } + status = v_ddf_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func jpeg.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__do_decode_frame( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_pixfmt = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint8_t v_c = 0; + uint8_t v_marker = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + if (coro_susp_point) { + v_marker = self->private_data.s_do_decode_frame[0].v_marker; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + v_pixfmt = 536870920u; + if (self->private_impl.f_num_components > 1u) { + v_pixfmt = 2415954056u; + } + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), + wuffs_base__utility__make_pixel_format(v_pixfmt), + wuffs_base__utility__empty_slice_u8(), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + if (self->private_impl.f_components_workbuf_offsets[8u] > ((uint64_t)(a_workbuf.len))) { + status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length); + goto exit; + } else if (self->private_impl.f_components_workbuf_offsets[4u] < self->private_impl.f_components_workbuf_offsets[8u]) { + wuffs_base__bulk_memset(a_workbuf.ptr + self->private_impl.f_components_workbuf_offsets[4u], (self->private_impl.f_components_workbuf_offsets[8u] - self->private_impl.f_components_workbuf_offsets[4u]), 0u); + } + if (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_memset(a_workbuf.ptr, self->private_impl.f_components_workbuf_offsets[4u], 128u); + } + while (true) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c == 255u) { + break; + } + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if (v_c != 255u) { + v_marker = v_c; + break; + } + } + if (v_marker == 0u) { + continue; + } else if ((208u <= v_marker) && (v_marker <= 217u)) { + if (v_marker <= 215u) { + continue; + } + } else { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_frame[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); + if (num_bits_2 == 8) { + t_2 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)); + } + } + self->private_impl.f_payload_length = t_2; + } + if (self->private_impl.f_payload_length < 2u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); + goto exit; + } + self->private_impl.f_payload_length -= 2u; + } + if (v_marker < 192u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } else if (v_marker < 208u) { + if (v_marker == 196u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + status = wuffs_jpeg__decoder__decode_dht(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else if (v_marker == 200u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); + goto exit; + } else if (v_marker < 224u) { + if (v_marker < 217u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); + goto exit; + } else if (v_marker == 217u) { + break; + } else if (v_marker == 218u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + status = wuffs_jpeg__decoder__decode_sos(self, a_src, a_workbuf); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else if (v_marker == 219u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + status = wuffs_jpeg__decoder__decode_dqt(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else if (v_marker == 221u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_jpeg__decoder__decode_dri(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + continue; + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } + } else if (v_marker < 240u) { + } else { + if (v_marker == 254u) { + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); + goto exit; + } + } + self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_payload_length; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame[0].scratch; + self->private_impl.f_payload_length = 0u; + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_frame[0].v_marker = v_marker; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.decode_dht + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_dht( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint8_t v_tc = 0; + uint8_t v_th = 0; + uint8_t v_tc4_th = 0; + uint32_t v_working_total_count = 0; + uint32_t v_total_count = 0; + uint32_t v_i = 0; + bool v_failed = false; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_dht[0]; + if (coro_susp_point) { + v_tc4_th = self->private_data.s_decode_dht[0].v_tc4_th; + v_total_count = self->private_data.s_decode_dht[0].v_total_count; + v_i = self->private_data.s_decode_dht[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_sof_marker == 0u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + while (self->private_impl.f_payload_length > 0u) { + if (self->private_impl.f_payload_length < 17u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + self->private_impl.f_payload_length -= 17u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (((v_c >> 4u) > 1u) || ((v_c & 15u) > 3u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + v_tc = (v_c >> 4u); + v_th = (v_c & 15u); + v_tc4_th = ((uint8_t)(((v_tc * 4u) | v_th))); + if ((self->private_impl.f_sof_marker == 192u) && ((v_tc4_th & 3u) > 1u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + v_i = 0u; + while (v_i < 16u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + self->private_data.f_dht_temp_counts[v_i] = t_1; + } + v_i += 1u; + } + v_working_total_count = 0u; + v_i = 0u; + while (v_i < 16u) { + v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535u); + v_i += 1u; + } + if ((v_working_total_count <= 0u) || (256u < v_working_total_count)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + v_total_count = v_working_total_count; + if (self->private_impl.f_payload_length < v_total_count) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + self->private_impl.f_payload_length -= v_total_count; + v_i = 0u; + while (v_i < v_total_count) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2; + } + v_i += 1u; + } + while (v_i < 256u) { + self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0u; + v_i += 1u; + } + if ((v_tc4_th & 4u) == 0u) { + v_i = 0u; + while (v_i < v_total_count) { + if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + v_i += 1u; + } + } + v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count); + if (v_failed) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); + goto exit; + } + self->private_impl.f_seen_dht[v_tc4_th] = true; + } + + goto ok; + ok: + self->private_impl.p_decode_dht[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_dht[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_dht[0].v_tc4_th = v_tc4_th; + self->private_data.s_decode_dht[0].v_total_count = v_total_count; + self->private_data.s_decode_dht[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.calculate_huff_tables + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__calculate_huff_tables( + wuffs_jpeg__decoder* self, + uint8_t a_tc4_th, + uint32_t a_total_count) { + uint32_t v_i = 0; + uint8_t v_j = 0; + uint8_t v_k = 0; + uint32_t v_bit_length_minus_one = 0; + uint8_t v_bit_length = 0; + uint32_t v_bit_string = 0; + uint32_t v_slow = 0; + uint8_t v_prefix = 0; + uint16_t v_fast = 0; + uint32_t v_reps = 0; + + v_i = 0u; + v_k = 0u; + v_bit_length_minus_one = 0u; + while (v_i < a_total_count) { + while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) { + v_k = 0u; + v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u); + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_k += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1u))); + v_i += 1u; + } + v_bit_length = 0u; + v_bit_string = 0u; + v_i = 0u; + while (v_i < a_total_count) { + while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) { + if (v_bit_length >= 16u) { + return true; + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_bit_length += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + v_bit_string <<= 1u; + } + self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)(v_bit_string)); + v_bit_string += 1u; + if ((v_bit_string >> v_bit_length) > 0u) { + return true; + } + v_i += 1u; + } + v_k = 0u; + v_bit_length_minus_one = 0u; + while (true) { + if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0u) { + self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0u; + } else { + v_slow = (255u & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k]))))); + v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one]; + self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1u))])) + 1u) << 8u)); + } + v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u); + if (v_bit_length_minus_one == 0u) { + break; + } + } + v_i = 0u; + while (v_i < 256u) { + self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535u; + v_i += 1u; + } + v_j = 0u; + v_bit_length_minus_one = 0u; + while (v_bit_length_minus_one < 8u) { + v_k = 0u; + while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) { + v_prefix = ((uint8_t)((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7u - v_bit_length_minus_one)))); + v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1u))) << 8u) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j]))))); + v_reps = (((uint32_t)(1u)) << (7u - v_bit_length_minus_one)); + while (v_reps > 0u) { + self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast; + v_prefix += 1u; + v_reps -= 1u; + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + v_k += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + v_j += 1u; + } + v_bit_length_minus_one += 1u; + } + return false; +} + +// -------- func jpeg.decoder.decode_sos + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__decode_sos( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_my = 0; + uint32_t v_mx = 0; + uint32_t v_decode_mcu_result = 0; + uint32_t v_bitstream_length = 0; + + uint32_t coro_susp_point = self->private_impl.p_decode_sos[0]; + if (coro_susp_point) { + v_my = self->private_data.s_decode_sos[0].v_my; + v_mx = self->private_data.s_decode_sos[0].v_mx; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_scan_count >= 64u) { + status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_scan_count); + goto exit; + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_jpeg__decoder__prepare_scan(self, a_src); + if (status.repr) { + goto suspend; + } + self->private_impl.f_next_restart_marker = 0u; + self->private_impl.f_mcu_previous_dc_values[0u] = 0u; + self->private_impl.f_mcu_previous_dc_values[1u] = 0u; + self->private_impl.f_mcu_previous_dc_values[2u] = 0u; + self->private_impl.f_mcu_previous_dc_values[3u] = 0u; + self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval; + self->private_impl.f_eob_run = 0u; + self->private_impl.f_bitstream_bits = 0u; + self->private_impl.f_bitstream_n_bits = 0u; + self->private_impl.f_bitstream_ri = 0u; + self->private_impl.f_bitstream_wi = 0u; + self->private_impl.f_bitstream_padding = 12345u; + wuffs_jpeg__decoder__fill_bitstream(self, a_src); + v_my = 0u; + while (v_my < self->private_impl.f_scan_height_in_mcus) { + v_mx = 0u; + while (v_mx < self->private_impl.f_scan_width_in_mcus) { + self->private_impl.f_mcu_current_block = 0u; + self->private_impl.f_mcu_zig_index = ((uint32_t)(self->private_impl.f_scan_ss)); + if (self->private_impl.f_sof_marker >= 194u) { + wuffs_jpeg__decoder__load_mcu_blocks(self, v_mx, v_my, a_workbuf); + } + while (true) { + v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self, a_workbuf, v_mx, v_my); + if (v_decode_mcu_result == 0u) { + break; + } else if (v_decode_mcu_result != 1u) { + status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state); + goto exit; + } + while (true) { + v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri)); + wuffs_jpeg__decoder__fill_bitstream(self, a_src); + if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) { + break; + } else if (self->private_impl.f_bitstream_padding == 0u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } else if ((a_src && a_src->meta.closed) && ! self->private_impl.f_bitstream_is_closed) { + if (self->private_impl.f_bitstream_wi < 1024u) { + wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_wi], 264u, 0u); + self->private_impl.f_bitstream_wi += 264u; + self->private_impl.f_bitstream_is_closed = true; + } + break; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } + } + if (self->private_impl.f_sof_marker >= 194u) { + wuffs_jpeg__decoder__save_mcu_blocks(self, v_mx, v_my, a_workbuf); + } + if (self->private_impl.f_restarts_remaining > 0u) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_restarts_remaining -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + if (self->private_impl.f_restarts_remaining == 0u) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src); + if (status.repr) { + goto suspend; + } + self->private_impl.f_mcu_previous_dc_values[0u] = 0u; + self->private_impl.f_mcu_previous_dc_values[1u] = 0u; + self->private_impl.f_mcu_previous_dc_values[2u] = 0u; + self->private_impl.f_mcu_previous_dc_values[3u] = 0u; + self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval; + self->private_impl.f_eob_run = 0u; + self->private_impl.f_bitstream_bits = 0u; + self->private_impl.f_bitstream_n_bits = 0u; + self->private_impl.f_bitstream_ri = 0u; + self->private_impl.f_bitstream_wi = 0u; + self->private_impl.f_bitstream_padding = 12345u; + } + } + v_mx += 1u; + } + v_my += 1u; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_scan_count, 1u); + + ok: + self->private_impl.p_decode_sos[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_sos[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_sos[0].v_my = v_my; + self->private_data.s_decode_sos[0].v_mx = v_mx; + + goto exit; + exit: + return status; +} + +// -------- func jpeg.decoder.prepare_scan + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__prepare_scan( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_i = 0; + uint32_t v_j = 0; + uint32_t v_j_max_incl = 0; + bool v_failed = false; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_prepare_scan[0]; + if (coro_susp_point) { + v_i = self->private_data.s_prepare_scan[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_payload_length < 6u) || (self->private_impl.f_payload_length > 12u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if ((v_c < 1u) || (v_c > 4u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_scan_num_components = ((uint32_t)(v_c)); + if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || (self->private_impl.f_payload_length != (4u + (2u * self->private_impl.f_scan_num_components)))) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_payload_length = 0u; + v_i = 0u; + while (v_i < self->private_impl.f_scan_num_components) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + v_j = 0u; + while (true) { + if (v_j >= self->private_impl.f_num_components) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + if (v_c == self->private_impl.f_components_c[v_j]) { + if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) { + status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table); + goto exit; + } + self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j)); + break; + } + v_j += 1u; + } + v_j = 0u; + while (v_j < v_i) { + if (self->private_impl.f_scan_comps_cselector[v_i] == self->private_impl.f_scan_comps_cselector[v_j]) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + v_j += 1u; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + if (((v_c >> 4u) > 3u) || ((v_c & 15u) > 3u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_scan_comps_td[v_i] = (v_c >> 4u); + self->private_impl.f_scan_comps_ta[v_i] = (v_c & 15u); + if (self->private_impl.f_sof_marker == 192u) { + if ((self->private_impl.f_scan_comps_td[v_i] > 1u) || (self->private_impl.f_scan_comps_ta[v_i] > 1u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + } + v_i += 1u; + } + if (self->private_impl.f_sof_marker < 194u) { + self->private_data.s_prepare_scan[0].scratch = 3u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (self->private_data.s_prepare_scan[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_prepare_scan[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_prepare_scan[0].scratch; + self->private_impl.f_scan_ss = 0u; + self->private_impl.f_scan_se = 63u; + self->private_impl.f_scan_ah = 0u; + self->private_impl.f_scan_al = 0u; + } else { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if (v_c > 63u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_scan_ss = v_c; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + if ((v_c > 63u) || (v_c < self->private_impl.f_scan_ss)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_scan_se = v_c; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + if (((v_c >> 4u) > 14u) || ((v_c & 15u) > 13u)) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + self->private_impl.f_scan_ah = (v_c >> 4u); + self->private_impl.f_scan_al = (v_c & 15u); + if (self->private_impl.f_scan_ah > 0u) { + if ((self->private_impl.f_scan_ah - 1u) != self->private_impl.f_scan_al) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + } + if (self->private_impl.f_scan_ss == 0u) { + if (self->private_impl.f_scan_se != 0u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } else if (self->private_impl.f_scan_ah == 0u) { + self->private_impl.choosy_decode_mcu = ( + &wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits); + } else { + self->private_impl.choosy_decode_mcu = ( + &wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit); + } + } else { + if (self->private_impl.f_scan_num_components != 1u) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } else if (self->private_impl.f_scan_ah == 0u) { + self->private_impl.choosy_decode_mcu = ( + &wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits); + } else { + self->private_impl.choosy_decode_mcu = ( + &wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit); + } + } + } + v_i = 0u; + while (v_i < self->private_impl.f_scan_num_components) { + if ((self->private_impl.f_scan_ss == 0u) && ! self->private_impl.f_seen_dht[(0u | self->private_impl.f_scan_comps_td[v_i])]) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + status = wuffs_jpeg__decoder__use_default_huffman_table(self, (0u | self->private_impl.f_scan_comps_td[v_i])); + if (status.repr) { + goto suspend; + } + } + if ((self->private_impl.f_scan_se != 0u) && ! self->private_impl.f_seen_dht[(4u | self->private_impl.f_scan_comps_ta[v_i])]) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_jpeg__decoder__use_default_huffman_table(self, (4u | self->private_impl.f_scan_comps_ta[v_i])); + if (status.repr) { + goto suspend; + } + } + v_j = ((uint32_t)(self->private_impl.f_scan_ss)); + v_j_max_incl = ((uint32_t)(wuffs_base__u8__min(self->private_impl.f_scan_se, 9u))); + while (v_j <= v_j_max_incl) { + self->private_impl.f_block_smoothing_lowest_scan_al[self->private_impl.f_scan_comps_cselector[v_i]][v_j] = self->private_impl.f_scan_al; + v_j += 1u; + } + v_i += 1u; + } + if (self->private_impl.f_scan_num_components == 1u) { + wuffs_jpeg__decoder__calculate_single_component_scan_fields(self); + } else { + v_failed = wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(self); + if (v_failed) { + status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); + goto exit; + } + } + + goto ok; + ok: + self->private_impl.p_prepare_scan[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_prepare_scan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_prepare_scan[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.use_default_huffman_table + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__use_default_huffman_table( + wuffs_jpeg__decoder* self, + uint8_t a_tc4_th) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__slice_u8 v_data = {0}; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + if (a_tc4_th == 0u) { + v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA), 29); + } else if (a_tc4_th == 1u) { + v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA), 29); + } else if (a_tc4_th == 4u) { + v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA), 179); + } else if (a_tc4_th == 5u) { + v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA), 179); + } else { + status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table); + goto exit; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + v_data, + 0u); + self->private_impl.f_payload_length = ((uint32_t)((((uint64_t)(v_data.len)) & 65535u))); + { + wuffs_base__status t_0 = wuffs_jpeg__decoder__decode_dht(self, v_r); + v_status = t_0; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + + ok: + goto exit; + exit: + return status; +} + +// -------- func jpeg.decoder.calculate_single_component_scan_fields + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__calculate_single_component_scan_fields( + wuffs_jpeg__decoder* self) { + uint8_t v_csel = 0; + + self->private_impl.f_scan_comps_bx_offset[0u] = 0u; + self->private_impl.f_scan_comps_by_offset[0u] = 0u; + self->private_impl.f_mcu_num_blocks = 1u; + self->private_impl.f_mcu_blocks_sselector[0u] = 0u; + v_csel = self->private_impl.f_scan_comps_cselector[0u]; + self->private_impl.f_mcu_blocks_offset[0u] = self->private_impl.f_components_workbuf_offsets[v_csel]; + self->private_impl.f_mcu_blocks_mx_mul[0u] = 8u; + self->private_impl.f_mcu_blocks_my_mul[0u] = (8u * self->private_impl.f_components_workbuf_widths[v_csel]); + self->private_impl.f_mcu_blocks_dc_hselector[0u] = (0u | self->private_impl.f_scan_comps_td[0u]); + self->private_impl.f_mcu_blocks_ac_hselector[0u] = (4u | self->private_impl.f_scan_comps_ta[0u]); + self->private_impl.f_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h); + self->private_impl.f_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v); + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.calculate_multiple_component_scan_fields + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__calculate_multiple_component_scan_fields( + wuffs_jpeg__decoder* self) { + uint32_t v_i = 0; + uint32_t v_h = 0; + uint32_t v_v = 0; + uint32_t v_hv = 0; + uint32_t v_total_hv = 0; + uint32_t v_b = 0; + uint32_t v_bx_offset = 0; + uint32_t v_by_offset = 0; + uint8_t v_ssel = 0; + uint8_t v_csel = 0; + + v_total_hv = 0u; + v_i = 0u; + v_b = 0u; + v_bx_offset = 0u; + v_by_offset = 0u; + while (v_i < self->private_impl.f_scan_num_components) { + v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])); + v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])); + v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]))); + v_total_hv += v_hv; + while (v_hv > 0u) { + self->private_impl.f_scan_comps_bx_offset[(v_b & 15u)] = ((uint8_t)((v_bx_offset & 3u))); + self->private_impl.f_scan_comps_by_offset[(v_b & 15u)] = ((uint8_t)((v_by_offset & 3u))); + self->private_impl.f_mcu_blocks_sselector[(v_b & 15u)] = ((uint8_t)(v_i)); + v_b += 1u; + v_bx_offset += 1u; + if (v_bx_offset == v_h) { + v_bx_offset = 0u; + v_by_offset += 1u; + if (v_by_offset == v_v) { + v_by_offset = 0u; + } + } + v_hv -= 1u; + } + v_i += 1u; + } + if (v_total_hv > 10u) { + return true; + } + self->private_impl.f_mcu_num_blocks = v_total_hv; + v_b = 0u; + while (v_b < self->private_impl.f_mcu_num_blocks) { + v_ssel = self->private_impl.f_mcu_blocks_sselector[v_b]; + v_csel = self->private_impl.f_scan_comps_cselector[v_ssel]; + self->private_impl.f_mcu_blocks_offset[v_b] = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8u * ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (8u * ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel])))); + self->private_impl.f_mcu_blocks_mx_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_h[v_csel]))); + self->private_impl.f_mcu_blocks_my_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_v[v_csel])) * self->private_impl.f_components_workbuf_widths[v_csel]); + self->private_impl.f_mcu_blocks_dc_hselector[v_b] = (0u | self->private_impl.f_scan_comps_td[v_ssel]); + self->private_impl.f_mcu_blocks_ac_hselector[v_b] = (4u | self->private_impl.f_scan_comps_ta[v_ssel]); + v_b += 1u; + } + self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus; + self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus; + return false; +} + +// -------- func jpeg.decoder.fill_bitstream + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__fill_bitstream( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + uint32_t v_wi = 0; + uint8_t v_c = 0; + uint32_t v_new_wi = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + if (self->private_impl.f_bitstream_ri <= 0u) { + } else if (self->private_impl.f_bitstream_ri >= self->private_impl.f_bitstream_wi) { + self->private_impl.f_bitstream_ri = 0u; + self->private_impl.f_bitstream_wi = 0u; + } else { + v_wi = (self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri); + wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048), wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi)); + self->private_impl.f_bitstream_ri = 0u; + self->private_impl.f_bitstream_wi = v_wi; + } + v_wi = self->private_impl.f_bitstream_wi; + while ((v_wi < 2048u) && (((uint64_t)(io2_a_src - iop_a_src)) > 0u)) { + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (v_c < 255u) { + self->private_data.f_bitstream_buffer[v_wi] = v_c; + v_wi += 1u; + iop_a_src += 1u; + continue; + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) { + break; + } else if ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u) { + break; + } else { + self->private_data.f_bitstream_buffer[v_wi] = 255u; + v_wi += 1u; + iop_a_src += 2u; + } + } + if (((uint64_t)(io2_a_src - iop_a_src)) > 1u) { + if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255u) && ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u)) { + v_new_wi = (wuffs_base__u32__min(v_wi, 1784u) + 264u); + v_new_wi = wuffs_base__u32__min(v_new_wi, (v_wi + self->private_impl.f_bitstream_padding)); + if (v_wi < v_new_wi) { + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_bitstream_padding, (v_new_wi - v_wi)); + wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[v_wi], (v_new_wi - v_wi), 0u); + v_wi = v_new_wi; + } + } + } + self->private_impl.f_bitstream_wi = v_wi; + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.load_mcu_blocks_for_single_component + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel) { + return (*self->private_impl.choosy_load_mcu_blocks_for_single_component)(self, a_mx, a_my, a_workbuf, a_csel); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel) { + uint64_t v_stride16 = 0; + uint64_t v_offset = 0; + + v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u))); + v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16)); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset)); + } + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.load_mcu_blocks + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf) { + uint32_t v_b = 0; + uint8_t v_csel = 0; + uint64_t v_h = 0; + uint64_t v_v = 0; + uint64_t v_stride16 = 0; + uint64_t v_offset = 0; + + v_h = 1u; + v_v = 1u; + v_b = 0u; + while (v_b < self->private_impl.f_mcu_num_blocks) { + v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]]; + if (self->private_impl.f_scan_num_components > 1u) { + v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel])); + v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel])); + } + v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u))); + v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16)); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset)); + } + v_b += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.save_mcu_blocks + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__save_mcu_blocks( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf) { + uint32_t v_b = 0; + uint8_t v_csel = 0; + uint64_t v_h = 0; + uint64_t v_v = 0; + uint64_t v_stride16 = 0; + uint64_t v_offset = 0; + + v_h = 1u; + v_v = 1u; + v_b = 0u; + while (v_b < self->private_impl.f_mcu_num_blocks) { + v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]]; + if (self->private_impl.f_scan_num_components > 1u) { + v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel])); + v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel])); + } + v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u))); + v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16)); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset)); + } + v_b += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.skip_past_the_next_restart_marker + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__skip_past_the_next_restart_marker( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255u) { + iop_a_src += 1u; + continue; + } + v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))); + if (v_c < 192u) { + iop_a_src += 2u; + continue; + } else if ((v_c < 208u) || (215u < v_c)) { + break; + } + v_c &= 7u; + if ((self->private_impl.f_next_restart_marker == ((v_c + 1u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 2u) & 7u))) { + break; + } else if ((self->private_impl.f_next_restart_marker == ((v_c + 7u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 6u) & 7u))) { + iop_a_src += 2u; + continue; + } else { + iop_a_src += 2u; + break; + } + } + self->private_impl.f_next_restart_marker = (((uint8_t)(self->private_impl.f_next_restart_marker + 1u)) & 7u); + + ok: + self->private_impl.p_skip_past_the_next_restart_marker[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_skip_past_the_next_restart_marker[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func jpeg.decoder.apply_progressive_idct + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__apply_progressive_idct( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf) { + uint32_t v_csel = 0; + bool v_block_smoothing_applicable = false; + uint32_t v_scan_width_in_mcus = 0; + uint32_t v_scan_height_in_mcus = 0; + uint32_t v_mcu_blocks_mx_mul_0 = 0; + uint32_t v_mcu_blocks_my_mul_0 = 0; + uint32_t v_my = 0; + uint32_t v_mx = 0; + uint64_t v_stride = 0; + uint64_t v_offset = 0; + uint8_t v_stashed_mcu_blocks_0[128] = {0}; + + wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128)); + v_block_smoothing_applicable = true; + v_csel = 0u; + while (v_csel < self->private_impl.f_num_components) { + if ((self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][0u] >= 16u) || wuffs_jpeg__decoder__top_left_quants_has_zero(self, ((uint32_t)(self->private_impl.f_components_tq[v_csel])))) { + v_block_smoothing_applicable = false; + } + v_csel += 1u; + } + v_csel = 0u; + while (v_csel < self->private_impl.f_num_components) { + v_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h); + v_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v); + v_mcu_blocks_mx_mul_0 = 8u; + v_mcu_blocks_my_mul_0 = (8u * self->private_impl.f_components_workbuf_widths[v_csel]); + if (v_block_smoothing_applicable && (0u != (self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][1u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][2u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][3u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][4u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][5u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][6u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] | + self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][9u]))) { + self->private_impl.choosy_load_mcu_blocks_for_single_component = ( + &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth); + self->private_impl.f_block_smoothing_mx_max_incl = wuffs_base__u32__sat_sub(v_scan_width_in_mcus, 1u); + self->private_impl.f_block_smoothing_my_max_incl = wuffs_base__u32__sat_sub(v_scan_height_in_mcus, 1u); + } else { + self->private_impl.choosy_load_mcu_blocks_for_single_component = ( + &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default); + } + v_my = 0u; + while (v_my < v_scan_height_in_mcus) { + v_mx = 0u; + while (v_mx < v_scan_width_in_mcus) { + wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(self, + v_mx, + v_my, + a_workbuf, + v_csel); + v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel])); + v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (((uint64_t)(v_mcu_blocks_mx_mul_0)) * ((uint64_t)(v_mx))) + (((uint64_t)(v_mcu_blocks_my_mul_0)) * ((uint64_t)(v_my)))); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel]))); + } + v_mx += 1u; + } + v_my += 1u; + } + v_csel += 1u; + } + wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128)); + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.swizzle_gray + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__swizzle_gray( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_length = 0; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint32_t v_y = 0; + uint64_t v_stride = 0; + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_length = ((uint64_t)((v_dst_bytes_per_pixel * self->private_impl.f_width))); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + v_y = 0u; + while (v_y < self->private_impl.f_height) { + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); + if (v_dst_length < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_length); + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf); + v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])); + if (v_stride <= ((uint64_t)(a_workbuf.len))) { + a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, v_stride); + } else { + a_workbuf = wuffs_base__utility__empty_slice_u8(); + } + v_y += 1u; + } + return wuffs_base__make_status(NULL); +} + +// -------- func jpeg.decoder.swizzle_colorful + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_jpeg__decoder__swizzle_colorful( + wuffs_jpeg__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__slice_u8 v_src0 = {0}; + wuffs_base__slice_u8 v_src1 = {0}; + wuffs_base__slice_u8 v_src2 = {0}; + wuffs_base__slice_u8 v_src3 = {0}; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + if ((self->private_impl.f_components_workbuf_offsets[0u] <= self->private_impl.f_components_workbuf_offsets[1u]) && (self->private_impl.f_components_workbuf_offsets[1u] <= ((uint64_t)(a_workbuf.len)))) { + v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf, + self->private_impl.f_components_workbuf_offsets[0u], + self->private_impl.f_components_workbuf_offsets[1u]); + } + if ((self->private_impl.f_components_workbuf_offsets[1u] <= self->private_impl.f_components_workbuf_offsets[2u]) && (self->private_impl.f_components_workbuf_offsets[2u] <= ((uint64_t)(a_workbuf.len)))) { + v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf, + self->private_impl.f_components_workbuf_offsets[1u], + self->private_impl.f_components_workbuf_offsets[2u]); + } + if ((self->private_impl.f_components_workbuf_offsets[2u] <= self->private_impl.f_components_workbuf_offsets[3u]) && (self->private_impl.f_components_workbuf_offsets[3u] <= ((uint64_t)(a_workbuf.len)))) { + v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf, + self->private_impl.f_components_workbuf_offsets[2u], + self->private_impl.f_components_workbuf_offsets[3u]); + } + if ((self->private_impl.f_components_workbuf_offsets[3u] <= self->private_impl.f_components_workbuf_offsets[4u]) && (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len)))) { + v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf, + self->private_impl.f_components_workbuf_offsets[3u], + self->private_impl.f_components_workbuf_offsets[4u]); + } + v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler, + a_dst, + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), + self->private_impl.f_width, + self->private_impl.f_height, + v_src0, + v_src1, + v_src2, + v_src3, + self->private_impl.f_components_workbuf_widths[0u], + self->private_impl.f_components_workbuf_widths[1u], + self->private_impl.f_components_workbuf_widths[2u], + self->private_impl.f_components_workbuf_widths[3u], + self->private_impl.f_components_workbuf_heights[0u], + self->private_impl.f_components_workbuf_heights[1u], + self->private_impl.f_components_workbuf_heights[2u], + self->private_impl.f_components_workbuf_heights[3u], + self->private_impl.f_components_workbuf_widths[0u], + self->private_impl.f_components_workbuf_widths[1u], + self->private_impl.f_components_workbuf_widths[2u], + self->private_impl.f_components_workbuf_widths[3u], + self->private_impl.f_components_h[0u], + self->private_impl.f_components_h[1u], + self->private_impl.f_components_h[2u], + self->private_impl.f_components_h[3u], + self->private_impl.f_components_v[0u], + self->private_impl.f_components_v[1u], + self->private_impl.f_components_v[2u], + self->private_impl.f_components_v[3u], + self->private_impl.f_is_rgb_or_cmyk, + true, + wuffs_base__make_slice_u8(self->private_data.f_swizzle_ycck_scratch_buffer_2k, 2048)); + return wuffs_base__status__ensure_not_a_suspension(v_status); +} + +// -------- func jpeg.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_jpeg__decoder__frame_dirty_rect( + const wuffs_jpeg__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func jpeg.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_jpeg__decoder__num_animation_loops( + const wuffs_jpeg__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func jpeg.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__num_decoded_frame_configs( + const wuffs_jpeg__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func jpeg.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__num_decoded_frames( + const wuffs_jpeg__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func jpeg.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__restart_frame( + wuffs_jpeg__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + uint32_t v_i = 0; + uint32_t v_j = 0; + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if (a_index != 0u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + self->private_impl.f_bitstream_is_closed = false; + self->private_impl.f_frame_config_io_position = a_io_position; + self->private_impl.f_scan_count = 0u; + self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval; + v_i = 0u; + while (v_i < 4u) { + self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i]; + v_j = 0u; + while (v_j < 64u) { + self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j]; + v_j += 1u; + } + v_i += 1u; + } + v_i = 0u; + while (v_i < 4u) { + v_j = 0u; + while (v_j < 10u) { + self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u; + v_j += 1u; + } + v_i += 1u; + } + v_i = 0u; + while (v_i < 8u) { + self->private_impl.f_seen_dht[v_i] = false; + v_i += 1u; + } + return wuffs_base__make_status(NULL); +} + +// -------- func jpeg.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_jpeg__decoder__set_report_metadata( + wuffs_jpeg__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_jpeg__decoder__tell_me_more( + wuffs_jpeg__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + + goto ok; + ok: + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func jpeg.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_jpeg__decoder__history_retain_length( + const wuffs_jpeg__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func jpeg.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_jpeg__decoder__workbuf_len( + const wuffs_jpeg__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[8u], self->private_impl.f_components_workbuf_offsets[8u]); +} + +// -------- func jpeg.decoder.top_left_quants_has_zero + +WUFFS_BASE__GENERATED_C_CODE +static bool +wuffs_jpeg__decoder__top_left_quants_has_zero( + const wuffs_jpeg__decoder* self, + uint32_t a_q) { + return ((self->private_impl.f_quant_tables[a_q][0u] == 0u) || + (self->private_impl.f_quant_tables[a_q][1u] == 0u) || + (self->private_impl.f_quant_tables[a_q][2u] == 0u) || + (self->private_impl.f_quant_tables[a_q][3u] == 0u) || + (self->private_impl.f_quant_tables[a_q][8u] == 0u) || + (self->private_impl.f_quant_tables[a_q][9u] == 0u) || + (self->private_impl.f_quant_tables[a_q][10u] == 0u) || + (self->private_impl.f_quant_tables[a_q][16u] == 0u) || + (self->private_impl.f_quant_tables[a_q][17u] == 0u) || + (self->private_impl.f_quant_tables[a_q][24u] == 0u)); +} + +// -------- func jpeg.decoder.load_mcu_blocks_for_single_component_smooth + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth( + wuffs_jpeg__decoder* self, + uint32_t a_mx, + uint32_t a_my, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_csel) { + uint64_t v_stride16 = 0; + uint64_t v_offset = 0; + uint32_t v_dx = 0; + uint32_t v_dy = 0; + uint32_t v_mx = 0; + uint32_t v_my = 0; + uint8_t v_q = 0; + uint32_t v_q_00 = 0; + uint32_t v_q_xy = 0; + uint8_t v_al = 0; + uint32_t v_scratch = 0; + uint32_t v_limit = 0; + + v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u))); + v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16)); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset)); + } + v_dy = 0u; + while (v_dy < 5u) { + v_my = wuffs_base__u32__min(self->private_impl.f_block_smoothing_my_max_incl, wuffs_base__u32__sat_sub((a_my + v_dy), 2u)); + v_dx = 0u; + while (v_dx < 5u) { + v_mx = wuffs_base__u32__min(self->private_impl.f_block_smoothing_mx_max_incl, wuffs_base__u32__sat_sub((a_mx + v_dx), 2u)); + v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(v_mx)) * 128u) + (((uint64_t)(v_my)) * v_stride16)); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_base__bulk_load_host_endian(&self->private_impl.f_block_smoothing_dc_values[v_dy][v_dx], 1u * (size_t)2u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset)); + } + v_dx += 1u; + } + v_dy += 1u; + } + v_q = self->private_impl.f_components_tq[a_csel]; + v_q_00 = ((uint32_t)(self->private_impl.f_quant_tables[v_q][0u])); + if (v_q_00 <= 0u) { + return wuffs_base__make_empty_struct(); + } + if (0u != (16u & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][6u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][7u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][8u] & + self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][9u])) { + v_scratch = 0u; + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(152u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + 128u)) / 256u))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + 128u)) / 256u))); + } + self->private_data.f_mcu_blocks[0u][0u] = ((uint16_t)(v_scratch)); + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][3u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][3u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][3u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][10u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][10u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][10u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][17u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][17u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][17u] = ((uint16_t)(v_scratch)); + } + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][24u])); + if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][24u] == 0u)) { + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } else { + v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))); + } + self->private_data.f_mcu_blocks[0u][24u] = ((uint16_t)(v_scratch)); + } + } else { + v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u]; + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u])); + if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) { + v_limit = ((((uint32_t)(1u)) << v_al) - 1u); + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } else { + v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } + self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch)); + } + v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u]; + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u])); + if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) { + v_limit = ((((uint32_t)(1u)) << v_al) - 1u); + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } else { + v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } + self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch)); + } + v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u]; + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u])); + if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) { + v_limit = ((((uint32_t)(1u)) << v_al) - 1u); + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } else { + v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } + self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch)); + } + v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u]; + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u])); + if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) { + v_limit = ((((uint32_t)(1u)) << v_al) - 1u); + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } else { + v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } + self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch)); + } + v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u]; + v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u])); + if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) { + v_limit = ((((uint32_t)(1u)) << v_al) - 1u); + v_scratch = 0u; + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u]))); + v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u]))); + v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u]))); + v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u]))); + v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u]))); + v_scratch *= v_q_00; + if (v_scratch < 2147483648u) { + v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } else { + v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))))); + } + self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch)); + } + } + return wuffs_base__make_empty_struct(); +} + +// -------- func jpeg.decoder.decode_mcu + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + return (*self->private_impl.choosy_decode_mcu)(self, a_workbuf, a_mx, a_my); +} + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu__choosy_default( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + uint32_t v_ret = 0; + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint8_t v_csel = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint32_t v_pos = 0; + uint8_t v_dc_h = 0; + uint32_t v_dc_symbol = 0; + uint32_t v_dc_ht_fast = 0; + uint32_t v_dc_bl = 0; + uint32_t v_dc_code = 0; + uint32_t v_dc_blm1 = 0; + uint32_t v_dc_ht_slow = 0; + uint16_t v_dc_value = 0; + uint16_t v_dc_extend = 0; + const uint16_t* v_ac_huff_table_fast = NULL; + uint8_t v_ac_h = 0; + uint32_t v_ac_symbol = 0; + uint32_t v_ac_ht_fast = 0; + uint32_t v_ac_bl = 0; + uint32_t v_ac_code = 0; + uint32_t v_ac_blm1 = 0; + uint32_t v_ac_ht_slow = 0; + uint16_t v_ac_value = 0; + uint16_t v_ac_extend = 0; + uint32_t v_ac_rrrr = 0; + uint32_t v_ac_ssss = 0; + uint32_t v_z = 0; + uint32_t v_mcb = 0; + uint64_t v_stride = 0; + uint64_t v_offset = 0; + + v_bits = self->private_impl.f_bitstream_bits; + v_n_bits = self->private_impl.f_bitstream_n_bits; + if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { + return 2u; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi), + ((uint64_t)(self->private_impl.f_bitstream_ri))); + do { + while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) { + while (self->private_impl.f_mcu_zig_index <= 0u) { + wuffs_base__bulk_memset(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, 0u); + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block]; + v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)])); + v_dc_bl = (v_dc_ht_fast >> 8u); + if (v_n_bits >= v_dc_bl) { + v_dc_symbol = (15u & v_dc_ht_fast); + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + v_bits <<= (v_dc_bl & 63u); + v_n_bits -= v_dc_bl; + } else { + v_dc_code = ((uint32_t)((v_bits >> 55u))); + v_dc_blm1 = 8u; + v_bits <<= 9u; + v_n_bits -= 9u; + while (true) { + v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1]; + if (v_dc_code < (v_dc_ht_slow >> 8u)) { + v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))]))); + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + break; + } + v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u)))); + v_bits <<= 1u; + v_n_bits -= 1u; + v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u); + if (v_dc_blm1 == 0u) { + v_dc_symbol = 0u; + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + break; + } + } + } + v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol)))); + v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u)); + v_bits <<= v_dc_symbol; + v_n_bits -= v_dc_symbol; + v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]]; + self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value; + self->private_data.f_mcu_blocks[0u][0u] = self->private_impl.f_mcu_previous_dc_values[v_csel]; + self->private_impl.f_mcu_zig_index = 1u; + break; + } + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + if (v_n_bits < 16u) { + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + } + v_z = 1u; + self->private_impl.f_mcu_zig_index = 0u; + v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[self->private_impl.f_mcu_current_block]; + v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u]; + while (v_z < 64u) { + v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)])); + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_ac_bl = (v_ac_ht_fast >> 8u); + if (v_n_bits >= v_ac_bl) { + v_ac_symbol = (255u & v_ac_ht_fast); + v_bits <<= (v_ac_bl & 63u); + v_n_bits -= v_ac_bl; + } else { + v_ac_code = ((uint32_t)((v_bits >> 55u))); + v_ac_blm1 = 8u; + v_bits <<= 9u; + v_n_bits -= 9u; + while (true) { + v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1]; + if (v_ac_code < (v_ac_ht_slow >> 8u)) { + v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))])); + break; + } + v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u)))); + v_bits <<= 1u; + v_n_bits -= 1u; + v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u); + if (v_ac_blm1 == 0u) { + v_ac_symbol = 0u; + break; + } + } + } + v_ac_rrrr = (v_ac_symbol >> 4u); + v_z += (v_ac_rrrr + 1u); + v_ac_ssss = (v_ac_symbol & 15u); + v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss]; + if (v_ac_ssss > 0u) { + v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss)))); + v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u)); + v_bits <<= v_ac_ssss; + v_n_bits -= v_ac_ssss; + self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = v_ac_value; + } else if (v_ac_rrrr < 15u) { + break; + } + } + v_mcb = self->private_impl.f_mcu_current_block; + self->private_impl.f_mcu_current_block += 1u; + if (self->private_impl.f_test_only_interrupt_decode_mcu) { + goto label__goto_done__break; + } + v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]]; + v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel])); + v_offset = (self->private_impl.f_mcu_blocks_offset[v_mcb] + (((uint64_t)(self->private_impl.f_mcu_blocks_mx_mul[v_mcb])) * ((uint64_t)(a_mx))) + (((uint64_t)(self->private_impl.f_mcu_blocks_my_mul[v_mcb])) * ((uint64_t)(a_my)))); + if (v_offset <= ((uint64_t)(a_workbuf.len))) { + wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel]))); + } + } + self->private_impl.f_mcu_current_block = 0u; + } while (0); + label__goto_done__break:; + v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))))); + if (v_pos > self->private_impl.f_bitstream_wi) { + v_ret = 2u; + } else { + self->private_impl.f_bitstream_ri = v_pos; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + self->private_impl.f_bitstream_bits = v_bits; + self->private_impl.f_bitstream_n_bits = v_n_bits; + return v_ret; +} + +// -------- func jpeg.decoder.decode_mcu_progressive_ac_high_bits + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + uint32_t v_ret = 0; + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint32_t v_pos = 0; + const uint16_t* v_ac_huff_table_fast = NULL; + uint8_t v_ac_h = 0; + uint32_t v_ac_symbol = 0; + uint32_t v_ac_ht_fast = 0; + uint32_t v_ac_bl = 0; + uint32_t v_ac_code = 0; + uint32_t v_ac_blm1 = 0; + uint32_t v_ac_ht_slow = 0; + uint16_t v_ac_value = 0; + uint16_t v_ac_extend = 0; + uint32_t v_ac_rrrr = 0; + uint32_t v_ac_ssss = 0; + uint32_t v_z = 0; + + if (self->private_impl.f_eob_run > 0u) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_eob_run -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + return 0u; + } + v_bits = self->private_impl.f_bitstream_bits; + v_n_bits = self->private_impl.f_bitstream_n_bits; + if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { + return 2u; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi), + ((uint64_t)(self->private_impl.f_bitstream_ri))); + do { + do { + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + if (v_n_bits < 16u) { + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + } + v_z = self->private_impl.f_mcu_zig_index; + self->private_impl.f_mcu_zig_index = 0u; + v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u]; + v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u]; + while (v_z <= ((uint32_t)(self->private_impl.f_scan_se))) { + v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)])); + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_ac_bl = (v_ac_ht_fast >> 8u); + if (v_n_bits >= v_ac_bl) { + v_ac_symbol = (255u & v_ac_ht_fast); + v_bits <<= (v_ac_bl & 63u); + v_n_bits -= v_ac_bl; + } else { + v_ac_code = ((uint32_t)((v_bits >> 55u))); + v_ac_blm1 = 8u; + v_bits <<= 9u; + v_n_bits -= 9u; + while (true) { + v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1]; + if (v_ac_code < (v_ac_ht_slow >> 8u)) { + v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))])); + break; + } + v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u)))); + v_bits <<= 1u; + v_n_bits -= 1u; + v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u); + if (v_ac_blm1 == 0u) { + v_ac_symbol = 0u; + break; + } + } + } + v_ac_rrrr = (v_ac_symbol >> 4u); + v_z += (v_ac_rrrr + 1u); + v_ac_ssss = (v_ac_symbol & 15u); + v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss]; + if (v_ac_ssss > 0u) { + v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss)))); + v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u)); + v_bits <<= v_ac_ssss; + v_n_bits -= v_ac_ssss; + self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)(((uint16_t)(v_ac_value << self->private_impl.f_scan_al)))); + } else if (v_ac_rrrr < 15u) { + self->private_impl.f_eob_run = ((uint16_t)(((((uint16_t)(1u)) << v_ac_rrrr) - 1u))); + if (v_ac_rrrr > 0u) { + self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr)))); + v_bits <<= v_ac_rrrr; + v_n_bits -= v_ac_rrrr; + } + break; + } + } + } while (0); + } while (0); + label__goto_done__break:; + v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))))); + if (v_pos > self->private_impl.f_bitstream_wi) { + v_ret = 2u; + } else { + self->private_impl.f_bitstream_ri = v_pos; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + self->private_impl.f_bitstream_bits = v_bits; + self->private_impl.f_bitstream_n_bits = v_n_bits; + return v_ret; +} + +// -------- func jpeg.decoder.decode_mcu_progressive_ac_low_bit + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + uint32_t v_ret = 0; + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint16_t v_one_lshift_scan_al = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint32_t v_pos = 0; + const uint16_t* v_ac_huff_table_fast = NULL; + uint8_t v_ac_h = 0; + uint32_t v_ac_symbol = 0; + uint32_t v_ac_ht_fast = 0; + uint32_t v_ac_bl = 0; + uint32_t v_ac_code = 0; + uint32_t v_ac_blm1 = 0; + uint32_t v_ac_ht_slow = 0; + uint16_t v_ac_value = 0; + uint32_t v_ac_rrrr = 0; + uint32_t v_ac_ssss = 0; + uint8_t v_unzig = 0; + bool v_bit = false; + + v_bits = self->private_impl.f_bitstream_bits; + v_n_bits = self->private_impl.f_bitstream_n_bits; + v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al); + if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { + return 2u; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi), + ((uint64_t)(self->private_impl.f_bitstream_ri))); + do { + do { + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + while (true) { + if (self->private_impl.f_eob_run > 0u) { + break; + } + v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u]; + v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u]; + while (true) { + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)])); + v_ac_bl = (v_ac_ht_fast >> 8u); + if (v_n_bits >= v_ac_bl) { + v_ac_symbol = (255u & v_ac_ht_fast); + v_bits <<= (v_ac_bl & 63u); + v_n_bits -= v_ac_bl; + } else { + v_ac_code = ((uint32_t)((v_bits >> 55u))); + v_ac_blm1 = 8u; + v_bits <<= 9u; + v_n_bits -= 9u; + while (true) { + v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1]; + if (v_ac_code < (v_ac_ht_slow >> 8u)) { + v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))])); + break; + } + v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u)))); + v_bits <<= 1u; + v_n_bits -= 1u; + v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u); + if (v_ac_blm1 == 0u) { + v_ac_symbol = 0u; + break; + } + } + } + v_ac_rrrr = (v_ac_symbol >> 4u); + v_ac_ssss = (v_ac_symbol & 15u); + v_ac_value = 0u; + if (v_ac_ssss > 0u) { + v_ac_value = (((uint16_t)(1u)) << self->private_impl.f_scan_al); + if ((v_bits >> 63u) == 0u) { + v_ac_value = ((uint16_t)(((uint16_t)(65535u)) << self->private_impl.f_scan_al)); + } + v_bits <<= 1u; + v_n_bits -= 1u; + } else if (v_ac_rrrr < 15u) { + self->private_impl.f_eob_run = (((uint16_t)(1u)) << v_ac_rrrr); + if (v_ac_rrrr > 0u) { + self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr)))); + v_bits <<= v_ac_rrrr; + v_n_bits -= v_ac_rrrr; + } + goto label__goto_do_eob__break; + } + while (true) { + v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]; + if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) { + if (v_n_bits == 0u) { + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + } + v_bit = ((v_bits >> 63u) > 0u); + v_bits <<= 1u; + v_n_bits -= 1u; + if (v_bit) { + if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + } + } else if (v_ac_rrrr <= 0u) { + break; + } else { + v_ac_rrrr -= 1u; + } + if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) { + break; + } + self->private_impl.f_mcu_zig_index += 1u; + } + if (v_ac_value != 0u) { + self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]] = v_ac_value; + } + if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) { + break; + } + self->private_impl.f_mcu_zig_index += 1u; + } + goto label__block__break; + } + label__goto_do_eob__break:; + if (self->private_impl.f_eob_run <= 0u) { + v_ret = 2u; + goto label__goto_done__break; + } + while (true) { + v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]; + if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) { + if (v_n_bits == 0u) { + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + } + v_bit = ((v_bits >> 63u) > 0u); + v_bits <<= 1u; + v_n_bits -= 1u; + if (v_bit) { + if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + } + } + if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) { + break; + } + self->private_impl.f_mcu_zig_index += 1u; + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_eob_run -= 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } while (0); + label__block__break:; + } while (0); + label__goto_done__break:; + v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))))); + if (v_pos > self->private_impl.f_bitstream_wi) { + v_ret = 2u; + } else { + self->private_impl.f_bitstream_ri = v_pos; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + self->private_impl.f_bitstream_bits = v_bits; + self->private_impl.f_bitstream_n_bits = v_n_bits; + return v_ret; +} + +// -------- func jpeg.decoder.decode_mcu_progressive_dc_high_bits + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + uint32_t v_ret = 0; + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint8_t v_csel = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint32_t v_pos = 0; + uint8_t v_dc_h = 0; + uint32_t v_dc_symbol = 0; + uint32_t v_dc_ht_fast = 0; + uint32_t v_dc_bl = 0; + uint32_t v_dc_code = 0; + uint32_t v_dc_blm1 = 0; + uint32_t v_dc_ht_slow = 0; + uint16_t v_dc_value = 0; + uint16_t v_dc_extend = 0; + + v_bits = self->private_impl.f_bitstream_bits; + v_n_bits = self->private_impl.f_bitstream_n_bits; + if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { + return 2u; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi), + ((uint64_t)(self->private_impl.f_bitstream_ri))); + do { + while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) { + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + do { + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block]; + v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)])); + v_dc_bl = (v_dc_ht_fast >> 8u); + if (v_n_bits >= v_dc_bl) { + v_dc_symbol = (15u & v_dc_ht_fast); + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + v_bits <<= (v_dc_bl & 63u); + v_n_bits -= v_dc_bl; + } else { + v_dc_code = ((uint32_t)((v_bits >> 55u))); + v_dc_blm1 = 8u; + v_bits <<= 9u; + v_n_bits -= 9u; + while (true) { + v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1]; + if (v_dc_code < (v_dc_ht_slow >> 8u)) { + v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))]))); + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + break; + } + v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u)))); + v_bits <<= 1u; + v_n_bits -= 1u; + v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u); + if (v_dc_blm1 == 0u) { + v_dc_symbol = 0u; + v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol]; + break; + } + } + } + v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol)))); + v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u)); + v_bits <<= v_dc_symbol; + v_n_bits -= v_dc_symbol; + v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]]; + self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value; + self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] = ((uint16_t)(self->private_impl.f_mcu_previous_dc_values[v_csel] << self->private_impl.f_scan_al)); + } while (0); + self->private_impl.f_mcu_current_block += 1u; + } + self->private_impl.f_mcu_current_block = 0u; + } while (0); + label__goto_done__break:; + v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))))); + if (v_pos > self->private_impl.f_bitstream_wi) { + v_ret = 2u; + } else { + self->private_impl.f_bitstream_ri = v_pos; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + self->private_impl.f_bitstream_bits = v_bits; + self->private_impl.f_bitstream_n_bits = v_n_bits; + return v_ret; +} + +// -------- func jpeg.decoder.decode_mcu_progressive_dc_low_bit + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit( + wuffs_jpeg__decoder* self, + wuffs_base__slice_u8 a_workbuf, + uint32_t a_mx, + uint32_t a_my) { + uint32_t v_ret = 0; + uint64_t v_bits = 0; + uint32_t v_n_bits = 0; + uint16_t v_one_lshift_scan_al = 0; + wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_r = &u_r; + const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint32_t v_pos = 0; + + v_bits = self->private_impl.f_bitstream_bits; + v_n_bits = self->private_impl.f_bitstream_n_bits; + v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al); + if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { + return 2u; + } + { + wuffs_base__io_buffer* o_0_v_r = v_r; + const uint8_t *o_0_iop_v_r = iop_v_r; + const uint8_t *o_0_io0_v_r = io0_v_r; + const uint8_t *o_0_io1_v_r = io1_v_r; + const uint8_t *o_0_io2_v_r = io2_v_r; + v_r = wuffs_base__io_reader__set( + &u_r, + &iop_v_r, + &io0_v_r, + &io1_v_r, + &io2_v_r, + wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, + self->private_impl.f_bitstream_ri, + self->private_impl.f_bitstream_wi), + ((uint64_t)(self->private_impl.f_bitstream_ri))); + do { + while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) { + if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) { + v_ret = 1u; + goto label__goto_done__break; + } + do { + if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) { + v_ret = 2u; + goto label__goto_done__break; + } + v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u)); + iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u); + v_n_bits |= 56u; + if ((v_bits >> 63u) != 0u) { + self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] |= v_one_lshift_scan_al; + } + v_bits <<= 1u; + v_n_bits -= 1u; + } while (0); + self->private_impl.f_mcu_current_block += 1u; + } + self->private_impl.f_mcu_current_block = 0u; + } while (0); + label__goto_done__break:; + v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))))); + if (v_pos > self->private_impl.f_bitstream_wi) { + v_ret = 2u; + } else { + self->private_impl.f_bitstream_ri = v_pos; + } + v_r = o_0_v_r; + iop_v_r = o_0_iop_v_r; + io0_v_r = o_0_io0_v_r; + io1_v_r = o_0_io1_v_r; + io2_v_r = o_0_io2_v_r; + } + self->private_impl.f_bitstream_bits = v_bits; + self->private_impl.f_bitstream_n_bits = v_n_bits; + return v_ret; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) + +// ---------------- Status Codes Implementations + +const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code"; +const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8"; +const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape"; +const char wuffs_json__error__bad_input[] = "#json: bad input"; +const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string"; +const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination"; +const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length"; +const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth"; +const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O"; + +// ---------------- Private Consts + +#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99 + +static const uint8_t +WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 3, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 162, 0, 0, 0, 0, 5, + 0, 0, 0, 0, 0, 0, 0, 175, + 7, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 4, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 220, 0, 0, 0, + 0, 1, 136, 0, 0, 2, 140, 0, + 0, 0, 0, 0, 0, 0, 138, 0, + 0, 0, 141, 0, 137, 0, 6, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, +}; + +static const uint8_t +WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 1, 3, 4, 5, 6, 7, 10, +}; + +static const uint8_t +WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 7, 27, 10, 63, 39, 11, 0, +}; + +static const uint8_t +WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 128, 129, 130, 131, 132, 133, 134, 135, + 136, 137, 138, 139, 140, 141, 142, 143, + 144, 145, 146, 147, 148, 149, 150, 151, + 152, 153, 154, 155, 156, 157, 158, 159, + 0, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 2, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, + 32, 32, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, + 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, + 5, 5, 5, 5, 5, 32, 32, 32, + 32, 32, 32, 32, 32, 32, 32, 32, +}; + +#define WUFFS_JSON__CLASS_WHITESPACE 0 + +#define WUFFS_JSON__CLASS_STRING 1 + +#define WUFFS_JSON__CLASS_COMMA 2 + +#define WUFFS_JSON__CLASS_COLON 3 + +#define WUFFS_JSON__CLASS_NUMBER 4 + +#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5 + +#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6 + +#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7 + +#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8 + +#define WUFFS_JSON__CLASS_FALSE 9 + +#define WUFFS_JSON__CLASS_TRUE 10 + +#define WUFFS_JSON__CLASS_NULL_NAN_INF 11 + +#define WUFFS_JSON__CLASS_COMMENT 12 + +#define WUFFS_JSON__EXPECT_VALUE 7858 + +#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856 + +#define WUFFS_JSON__EXPECT_STRING 4098 + +#define WUFFS_JSON__EXPECT_COMMA 4100 + +#define WUFFS_JSON__EXPECT_COLON 4104 + +#define WUFFS_JSON__EXPECT_NUMBER 4112 + +#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160 + +#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352 + +static const uint8_t +WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 0, 0, 15, 15, 0, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 0, 15, 1, 15, 15, 15, 15, 15, + 15, 15, 15, 11, 2, 4, 15, 12, + 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 3, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 11, 15, 15, 15, 15, 11, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 7, 15, 8, 15, 15, + 15, 15, 15, 15, 15, 15, 9, 15, + 15, 11, 15, 15, 15, 15, 11, 15, + 15, 15, 15, 15, 10, 15, 15, 15, + 15, 15, 15, 5, 15, 6, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, +}; + +static const uint8_t +WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 128, 129, 130, 131, 132, 133, 134, 135, + 136, 137, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, +}; + +static const uint8_t +WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 128, 129, 130, 131, 132, 133, 134, 135, + 136, 137, 0, 0, 0, 0, 0, 0, + 0, 138, 139, 140, 141, 142, 143, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 138, 139, 140, 141, 142, 143, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, +}; + +#define WUFFS_JSON__QUIRKS_BASE 1225364480 + +#define WUFFS_JSON__QUIRKS_COUNT 21 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_json__decoder__decode_number( + wuffs_json__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_json__decoder__decode_digits( + wuffs_json__decoder* self, + wuffs_base__io_buffer* a_src, + uint32_t a_n); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_leading( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_comment( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_inf_nan( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_trailer( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__token_decoder__func_ptrs +wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__token_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_json__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_json__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_json__decoder__set_quirk), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_json__decoder__initialize( + wuffs_json__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name = + wuffs_base__token_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers = + (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_json__decoder* +wuffs_json__decoder__alloc(void) { + wuffs_json__decoder* x = + (wuffs_json__decoder*)(calloc(sizeof(wuffs_json__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_json__decoder__initialize( + x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_json__decoder(void) { + return sizeof(wuffs_json__decoder); +} + +// ---------------- Function Implementations + +// -------- func json.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_json__decoder__get_quirk( + const wuffs_json__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + uint32_t v_key = 0; + + if (a_key >= 1225364480u) { + v_key = (a_key - 1225364480u); + if (v_key < 21u) { + if (self->private_impl.f_quirks[v_key]) { + return 1u; + } + } + } + return 0u; +} + +// -------- func json.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_json__decoder__set_quirk( + wuffs_json__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (a_key >= 1225364480u) { + a_key -= 1225364480u; + if (a_key < 21u) { + self->private_impl.f_quirks[a_key] = (a_value > 0u); + return wuffs_base__make_status(NULL); + } + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func json.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_json__decoder__history_retain_length( + const wuffs_json__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func json.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_json__decoder__workbuf_len( + const wuffs_json__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__empty_range_ii_u64(); +} + +// -------- func json.decoder.decode_tokens + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_json__decoder__decode_tokens( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_vminor = 0; + uint32_t v_number_length = 0; + uint32_t v_number_status = 0; + uint32_t v_string_length = 0; + uint32_t v_whitespace_length = 0; + uint32_t v_depth = 0; + uint32_t v_stack_byte = 0; + uint32_t v_stack_bit = 0; + uint32_t v_match = 0; + uint32_t v_c4 = 0; + uint8_t v_c = 0; + uint8_t v_backslash = 0; + uint8_t v_char = 0; + uint8_t v_class = 0; + uint32_t v_multi_byte_utf8 = 0; + uint8_t v_backslash_x_ok = 0; + uint8_t v_backslash_x_value = 0; + uint32_t v_backslash_x_string = 0; + uint8_t v_uni4_ok = 0; + uint64_t v_uni4_string = 0; + uint32_t v_uni4_value = 0; + uint32_t v_uni4_high_surrogate = 0; + uint8_t v_uni8_ok = 0; + uint64_t v_uni8_string = 0; + uint32_t v_uni8_value = 0; + uint32_t v_expect = 0; + uint32_t v_expect_after_value = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0]; + if (coro_susp_point) { + v_depth = self->private_data.s_decode_tokens[0].v_depth; + v_expect = self->private_data.s_decode_tokens[0].v_expect; + v_expect_after_value = self->private_data.s_decode_tokens[0].v_expect_after_value; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_end_of_data) { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (self->private_impl.f_quirks[18u]) { + if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u] || self->private_impl.f_quirks[17u]) { + status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination); + goto exit; + } + } + if (self->private_impl.f_quirks[15u] || self->private_impl.f_quirks[16u]) { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_json__decoder__decode_leading(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + v_expect = 7858u; + label__outer__continue:; + while (true) { + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + goto label__outer__continue; + } + v_whitespace_length = 0u; + v_c = 0u; + v_class = 0u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (v_whitespace_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_whitespace_length = 0u; + } + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + goto label__outer__continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + v_class = WUFFS_JSON__LUT_CLASSES[v_c]; + if (v_class != 0u) { + break; + } + iop_a_src += 1u; + if (v_whitespace_length >= 65534u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(65535u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_whitespace_length = 0u; + goto label__outer__continue; + } + v_whitespace_length += 1u; + } + if (v_whitespace_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_whitespace_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__outer__continue; + } + } + if (0u == (v_expect & (((uint32_t)(1u)) << v_class))) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + if (v_class == 1u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + label__string_loop_outer__continue:; + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + continue; + } + v_string_length = 0u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + } + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + goto label__string_loop_outer__continue; + } + while (((uint64_t)(io2_a_src - iop_a_src)) > 4u) { + v_c4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + if (0u != (WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 0u))] | + WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 8u))] | + WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 16u))] | + WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 24u))])) { + break; + } + iop_a_src += 4u; + if (v_string_length > 65527u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + goto label__string_loop_outer__continue; + } + v_string_length += 4u; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + v_char = WUFFS_JSON__LUT_CHARS[v_c]; + if (v_char == 0u) { + iop_a_src += 1u; + if (v_string_length >= 65531u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(65532u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + goto label__string_loop_outer__continue; + } + v_string_length += 1u; + continue; + } else if (v_char == 1u) { + if (v_string_length != 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + } + goto label__string_loop_outer__break; + } else if (v_char == 2u) { + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__string_loop_outer__continue; + } + } + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + goto label__string_loop_outer__continue; + } + v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))); + v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c]; + if ((v_backslash & 128u) != 0u) { + iop_a_src += 2u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | ((uint32_t)((v_backslash & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } else if (v_backslash != 0u) { + if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[(v_backslash & 7u)]]) { + iop_a_src += 2u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[(v_backslash & 7u)]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + } else if (v_c == 117u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); + goto label__string_loop_outer__continue; + } + v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16u); + v_uni4_value = 0u; + v_uni4_ok = 128u; + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u); + if (v_uni4_ok == 0u) { + } else if ((v_uni4_value < 55296u) || (57343u < v_uni4_value)) { + iop_a_src += 6u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } else if (v_uni4_value >= 56320u) { + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) < 12u) { + if (a_src && a_src->meta.closed) { + if (self->private_impl.f_quirks[20u]) { + iop_a_src += 6u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + goto label__string_loop_outer__continue; + } + v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4u) >> 16u); + if (((255u & (v_uni4_string >> 0u)) != 92u) || ((255u & (v_uni4_string >> 8u)) != 117u)) { + v_uni4_high_surrogate = 0u; + v_uni4_value = 0u; + v_uni4_ok = 0u; + } else { + v_uni4_high_surrogate = (65536u + ((v_uni4_value - 55296u) << 10u)); + v_uni4_value = 0u; + v_uni4_ok = 128u; + v_uni4_string >>= 16u; + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))]; + v_uni4_ok &= v_c; + v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u); + } + if ((v_uni4_ok != 0u) && (56320u <= v_uni4_value) && (v_uni4_value <= 57343u)) { + v_uni4_value -= 56320u; + iop_a_src += 12u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(12u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + } + if (self->private_impl.f_quirks[20u]) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) { + status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); + goto exit; + } + iop_a_src += 6u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + } else if ((v_c == 85u) && self->private_impl.f_quirks[2u]) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 10u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); + goto label__string_loop_outer__continue; + } + v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2u); + v_uni8_value = 0u; + v_uni8_ok = 128u; + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 0u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 28u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 8u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 24u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 16u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 20u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 24u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 16u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 32u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 12u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 40u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 8u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 48u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 4u); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 56u))]; + v_uni8_ok &= v_c; + v_uni8_value |= (((uint32_t)((v_c & 15u))) << 0u); + if (v_uni8_ok == 0u) { + } else if ((v_uni8_value < 55296u) || ((57343u < v_uni8_value) && (v_uni8_value <= 1114111u))) { + iop_a_src += 10u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | (v_uni8_value & 2097151u)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } else if (self->private_impl.f_quirks[20u]) { + iop_a_src += 10u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + } else if ((v_c == 120u) && self->private_impl.f_quirks[9u]) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); + goto label__string_loop_outer__continue; + } + v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + v_backslash_x_ok = 128u; + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 16u))]; + v_backslash_x_ok &= v_c; + v_backslash_x_value = ((uint8_t)(((v_c & 15u) << 4u))); + v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 24u))]; + v_backslash_x_ok &= v_c; + v_backslash_x_value = ((uint8_t)((v_backslash_x_value | (v_c & 15u)))); + if ((v_backslash_x_ok == 0u) || ((v_backslash_x_string & 65535u) != 30812u)) { + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } + iop_a_src += 4u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); + goto exit; + } else if (v_char == 3u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__string_loop_outer__continue; + } + } + if (a_src && a_src->meta.closed) { + if (self->private_impl.f_quirks[20u]) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); + goto label__string_loop_outer__continue; + } + v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + if ((v_multi_byte_utf8 & 49152u) == 32768u) { + v_multi_byte_utf8 = ((1984u & ((uint32_t)(v_multi_byte_utf8 << 6u))) | (63u & (v_multi_byte_utf8 >> 8u))); + iop_a_src += 2u; + if (v_string_length >= 65528u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_string_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + goto label__string_loop_outer__continue; + } + v_string_length += 2u; + continue; + } + } else if (v_char == 4u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) { + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__string_loop_outer__continue; + } + } + if (a_src && a_src->meta.closed) { + if (self->private_impl.f_quirks[20u]) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12); + goto label__string_loop_outer__continue; + } + v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); + if ((v_multi_byte_utf8 & 12632064u) == 8421376u) { + v_multi_byte_utf8 = ((61440u & ((uint32_t)(v_multi_byte_utf8 << 12u))) | (4032u & (v_multi_byte_utf8 >> 2u)) | (63u & (v_multi_byte_utf8 >> 16u))); + if ((2047u < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296u) || (57343u < v_multi_byte_utf8))) { + iop_a_src += 3u; + if (v_string_length >= 65528u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_string_length + 3u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + goto label__string_loop_outer__continue; + } + v_string_length += 3u; + continue; + } + } + } else if (v_char == 5u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__string_loop_outer__continue; + } + } + if (a_src && a_src->meta.closed) { + if (self->private_impl.f_quirks[20u]) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13); + goto label__string_loop_outer__continue; + } + v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + if ((v_multi_byte_utf8 & 3233857536u) == 2155905024u) { + v_multi_byte_utf8 = ((1835008u & ((uint32_t)(v_multi_byte_utf8 << 18u))) | + (258048u & ((uint32_t)(v_multi_byte_utf8 << 4u))) | + (4032u & (v_multi_byte_utf8 >> 10u)) | + (63u & (v_multi_byte_utf8 >> 24u))); + if ((65535u < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111u)) { + iop_a_src += 4u; + if (v_string_length >= 65528u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + goto label__string_loop_outer__continue; + } + v_string_length += 4u; + continue; + } + } + } + if (v_string_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_string_length = 0u; + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + goto label__string_loop_outer__continue; + } + } + if ((v_char & 128u) != 0u) { + if (self->private_impl.f_quirks[0u]) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((6291456u | ((uint32_t)((v_char & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + goto label__string_loop_outer__continue; + } + if (v_char == 138u) { + status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string); + goto exit; + } + status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code); + goto exit; + } + if (self->private_impl.f_quirks[20u]) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 1u; + goto label__string_loop_outer__continue; + } + status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); + goto exit; + } + } + label__string_loop_outer__break:; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14); + continue; + } + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15); + continue; + } + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + break; + } + if (0u == (v_expect & (((uint32_t)(1u)) << 4u))) { + v_expect = 4104u; + goto label__outer__continue; + } + break; + } else if (v_class == 2u) { + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (0u == (v_expect & (((uint32_t)(1u)) << 8u))) { + if (self->private_impl.f_quirks[13u]) { + v_expect = 4162u; + } else { + v_expect = 4098u; + } + } else { + if (self->private_impl.f_quirks[13u]) { + v_expect = 8114u; + } else { + v_expect = 7858u; + } + } + goto label__outer__continue; + } else if (v_class == 3u) { + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 7858u; + goto label__outer__continue; + } else if (v_class == 4u) { + while (true) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_number_length = wuffs_json__decoder__decode_number(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + v_number_status = (v_number_length >> 8u); + v_vminor = 10486787u; + if ((v_number_length & 128u) != 0u) { + v_vminor = 10486785u; + } + v_number_length = (v_number_length & 127u); + if (v_number_status == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + break; + } + while (v_number_length > 0u) { + v_number_length -= 1u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); + goto exit; + } + } + if (v_number_status == 1u) { + if (self->private_impl.f_quirks[14u]) { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + break; + } + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } else if (v_number_status == 2u) { + status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17); + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18); + } + } + } + break; + } else if (v_class == 5u) { + v_vminor = 2113553u; + if (v_depth == 0u) { + } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) { + v_vminor = 2113601u; + } else { + v_vminor = 2113569u; + } + if (v_depth >= 1024u) { + status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth); + goto exit; + } + v_stack_byte = (v_depth / 32u); + v_stack_bit = (v_depth & 31u); + self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1u)) << v_stack_bit); + v_depth += 1u; + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 4162u; + v_expect_after_value = 4164u; + goto label__outer__continue; + } else if (v_class == 6u) { + iop_a_src += 1u; + if (v_depth <= 1u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2101314u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__outer__break; + } + v_depth -= 1u; + v_stack_byte = ((v_depth - 1u) / 32u); + v_stack_bit = ((v_depth - 1u) & 31u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2105410u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 4356u; + v_expect_after_value = 4356u; + } else { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2113602u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 4164u; + v_expect_after_value = 4164u; + } + goto label__outer__continue; + } else if (v_class == 7u) { + v_vminor = 2105361u; + if (v_depth == 0u) { + } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) { + v_vminor = 2105409u; + } else { + v_vminor = 2105377u; + } + if (v_depth >= 1024u) { + status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth); + goto exit; + } + v_stack_byte = (v_depth / 32u); + v_stack_bit = (v_depth & 31u); + self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(1u)) << v_stack_bit)); + v_depth += 1u; + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 8114u; + v_expect_after_value = 4356u; + goto label__outer__continue; + } else if (v_class == 8u) { + iop_a_src += 1u; + if (v_depth <= 1u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2101282u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + goto label__outer__break; + } + v_depth -= 1u; + v_stack_byte = ((v_depth - 1u) / 32u); + v_stack_bit = ((v_depth - 1u) & 31u); + if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2105378u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 4356u; + v_expect_after_value = 4356u; + } else { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2113570u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + v_expect = 4164u; + v_expect_after_value = 4164u; + } + goto label__outer__continue; + } else if (v_class == 9u) { + v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 111546413966853u); + if (v_match == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(8388612u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(5u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) { + status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); + goto exit; + } + iop_a_src += 5u; + break; + } else if (v_match == 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19); + goto label__outer__continue; + } + } else if (v_class == 10u) { + v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 435762131972u); + if (v_match == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(8388616u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); + goto exit; + } + iop_a_src += 4u; + break; + } else if (v_match == 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20); + goto label__outer__continue; + } + } else if (v_class == 11u) { + v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 465676103172u); + if (v_match == 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(8388610u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); + goto exit; + } + iop_a_src += 4u; + break; + } else if (v_match == 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21); + goto label__outer__continue; + } + if (self->private_impl.f_quirks[14u]) { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); + status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + break; + } + } else if (v_class == 12u) { + if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u]) { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23); + status = wuffs_json__decoder__decode_comment(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_comment_type > 0u) { + goto label__outer__continue; + } + } + } + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + if (v_depth == 0u) { + break; + } + v_expect = v_expect_after_value; + } + label__outer__break:; + if (self->private_impl.f_quirks[17u] || self->private_impl.f_quirks[18u]) { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24); + status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + self->private_impl.f_end_of_data = true; + + ok: + self->private_impl.p_decode_tokens[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + self->private_data.s_decode_tokens[0].v_depth = v_depth; + self->private_data.s_decode_tokens[0].v_expect = v_expect; + self->private_data.s_decode_tokens[0].v_expect_after_value = v_expect_after_value; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func json.decoder.decode_number + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_json__decoder__decode_number( + wuffs_json__decoder* self, + wuffs_base__io_buffer* a_src) { + uint8_t v_c = 0; + uint32_t v_n = 0; + uint32_t v_floating_point = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + do { + v_n = 0u; + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (v_c != 45u) { + } else { + v_n += 1u; + iop_a_src += 1u; + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + v_n |= 256u; + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + } + if (v_c == 48u) { + v_n += 1u; + iop_a_src += 1u; + } else { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (v_n > 99u) { + break; + } + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (v_c != 46u) { + } else { + if (v_n >= 99u) { + v_n |= 512u; + break; + } + v_n += 1u; + iop_a_src += 1u; + v_floating_point = 128u; + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (v_n > 99u) { + break; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + } + if ((v_c != 69u) && (v_c != 101u)) { + break; + } + if (v_n >= 99u) { + v_n |= 512u; + break; + } + v_n += 1u; + iop_a_src += 1u; + v_floating_point = 128u; + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + v_n |= 256u; + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if ((v_c != 43u) && (v_c != 45u)) { + } else { + if (v_n >= 99u) { + v_n |= 512u; + break; + } + v_n += 1u; + iop_a_src += 1u; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } while (0); + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + return (v_n | v_floating_point); +} + +// -------- func json.decoder.decode_digits + +WUFFS_BASE__GENERATED_C_CODE +static uint32_t +wuffs_json__decoder__decode_digits( + wuffs_json__decoder* self, + wuffs_base__io_buffer* a_src, + uint32_t a_n) { + uint8_t v_c = 0; + uint32_t v_n = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_n = a_n; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if ( ! (a_src && a_src->meta.closed)) { + v_n |= 768u; + } + break; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (0u == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c]) { + break; + } + if (v_n >= 99u) { + v_n |= 512u; + break; + } + v_n += 1u; + iop_a_src += 1u; + } + if (v_n == a_n) { + v_n |= 256u; + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + return v_n; +} + +// -------- func json.decoder.decode_leading + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_leading( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_u = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_leading[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15u]; + self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16u]; + while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + break; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if ((v_c == 30u) && self->private_impl.f_allow_leading_ars) { + self->private_impl.f_allow_leading_ars = false; + iop_a_src += 1u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + continue; + } else if ((v_c == 239u) && self->private_impl.f_allow_leading_ubom) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) { + if (a_src && a_src->meta.closed) { + break; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + continue; + } + v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); + if (v_u == 12565487u) { + self->private_impl.f_allow_leading_ubom = false; + iop_a_src += 3u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + continue; + } + } + break; + } + + ok: + self->private_impl.p_decode_leading[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_leading[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func json.decoder.decode_comment + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_comment( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint16_t v_c2 = 0; + uint32_t v_length = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_comment[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_comment_type = 0u; + while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1u)) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(NULL); + goto ok; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } + v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + if ((v_c2 == 10799u) && self->private_impl.f_quirks[11u]) { + iop_a_src += 2u; + v_length = 2u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) { + if (v_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + } + v_length = 0u; + continue; + } + v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + if (v_c2 == 12074u) { + iop_a_src += 2u; + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)((v_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + self->private_impl.f_comment_type = 1u; + status = wuffs_base__make_status(NULL); + goto ok; + } + iop_a_src += 1u; + if (v_length >= 65533u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + } + v_length = 0u; + continue; + } + v_length += 1u; + } + } else if ((v_c2 == 12079u) && self->private_impl.f_quirks[12u]) { + iop_a_src += 2u; + v_length = 2u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + self->private_impl.f_comment_type = 2u; + status = wuffs_base__make_status(NULL); + goto ok; + } else if (v_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); + } + v_length = 0u; + continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (v_c == 10u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + self->private_impl.f_comment_type = 2u; + status = wuffs_base__make_status(NULL); + goto ok; + } + iop_a_src += 1u; + if (v_length >= 65533u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | + (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + } + v_length = 0u; + continue; + } + v_length += 1u; + } + } + + ok: + self->private_impl.p_decode_comment[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_comment[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func json.decoder.decode_inf_nan + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_inf_nan( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_c4 = 0; + uint32_t v_neg = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 2u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + continue; + } + v_c4 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); + if ((v_c4 | 2105376u) == 6712937u) { + if (((uint64_t)(io2_a_src - iop_a_src)) > 7u) { + if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536u) == 8751735898823356009u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(8u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 8u; + status = wuffs_base__make_status(NULL); + goto ok; + } + } else if ( ! (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + continue; + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 3u; + status = wuffs_base__make_status(NULL); + goto ok; + } else if ((v_c4 | 2105376u) == 7233902u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(10485888u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 3u; + status = wuffs_base__make_status(NULL); + goto ok; + } else if ((v_c4 & 255u) == 43u) { + v_neg = 0u; + } else if ((v_c4 & 255u) == 45u) { + v_neg = 1u; + } else { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + if (((uint64_t)(io2_a_src - iop_a_src)) <= 3u) { + if (a_src && a_src->meta.closed) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + continue; + } + v_c4 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8u); + if ((v_c4 | 2105376u) == 6712937u) { + if (((uint64_t)(io2_a_src - iop_a_src)) > 8u) { + if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1u) | 2314885530818453536u) == 8751735898823356009u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 9u; + status = wuffs_base__make_status(NULL); + goto ok; + } + } else if ( ! (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + continue; + } + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 4u; + status = wuffs_base__make_status(NULL); + goto ok; + } else if ((v_c4 | 2105376u) == 7233902u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)((10485760u | (((uint32_t)(128u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + iop_a_src += 4u; + status = wuffs_base__make_status(NULL); + goto ok; + } + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + + ok: + self->private_impl.p_decode_inf_nan[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_inf_nan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func json.decoder.decode_trailer + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_json__decoder__decode_trailer( + wuffs_json__decoder* self, + wuffs_base__token_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_whitespace_length = 0; + + wuffs_base__token* iop_a_dst = NULL; + wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_trailer[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_quirks[18u]) { + self->private_impl.f_trailer_stop = 10u; + } else { + self->private_impl.f_trailer_stop = 0u; + } + label__outer__continue:; + while (true) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + v_whitespace_length = 0u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (v_whitespace_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + if (a_src && a_src->meta.closed) { + goto label__outer__break; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + goto label__outer__continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (WUFFS_JSON__LUT_CLASSES[v_c] != 0u) { + if (v_whitespace_length > 0u) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + } + if (self->private_impl.f_trailer_stop > 0u) { + status = wuffs_base__make_status(wuffs_json__error__bad_input); + goto exit; + } + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_json__decoder__decode_comment(self, a_dst, a_src); + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_comment_type > 0u) { + goto label__outer__continue; + } + status = wuffs_base__make_status(NULL); + goto ok; + } + iop_a_src += 1u; + if ((v_whitespace_length >= 65534u) || (v_c == self->private_impl.f_trailer_stop)) { + *iop_a_dst++ = wuffs_base__make_token( + (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | + (((uint64_t)((v_whitespace_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); + if (v_c == self->private_impl.f_trailer_stop) { + status = wuffs_base__make_status(NULL); + goto ok; + } + goto label__outer__continue; + } + v_whitespace_length += 1u; + } + } + label__outer__break:; + + ok: + self->private_impl.p_decode_trailer[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_trailer[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) + +// ---------------- Status Codes Implementations + +const char wuffs_lzw__error__bad_code[] = "#lzw: bad code"; +const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input"; +const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O"; + +// ---------------- Private Consts + +#define WUFFS_LZW__QUIRKS_BASE 1348378624 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_lzw__decoder__read_from( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_lzw__decoder__write_to( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_dst); + +// ---------------- VTables + +const wuffs_base__io_transformer__func_ptrs +wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = { + (uint64_t(*)(const void*, + uint32_t))(&wuffs_lzw__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_lzw__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_lzw__decoder__set_quirk), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_lzw__decoder__initialize( + wuffs_lzw__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = + wuffs_base__io_transformer__vtable_name; + self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = + (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer); + return wuffs_base__make_status(NULL); +} + +wuffs_lzw__decoder* +wuffs_lzw__decoder__alloc(void) { + wuffs_lzw__decoder* x = + (wuffs_lzw__decoder*)(calloc(sizeof(wuffs_lzw__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_lzw__decoder__initialize( + x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_lzw__decoder(void) { + return sizeof(wuffs_lzw__decoder); +} + +// ---------------- Function Implementations + +// -------- func lzw.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_lzw__decoder__get_quirk( + const wuffs_lzw__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (a_key == 1348378624u) { + return ((uint64_t)(self->private_impl.f_pending_literal_width_plus_one)); + } + return 0u; +} + +// -------- func lzw.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_lzw__decoder__set_quirk( + wuffs_lzw__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (a_key == 1348378624u) { + if (a_value > 9u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value)); + return wuffs_base__make_status(NULL); + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func lzw.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_lzw__decoder__history_retain_length( + const wuffs_lzw__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func lzw.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_lzw__decoder__workbuf_len( + const wuffs_lzw__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +// -------- func lzw.decoder.transform_io + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_lzw__decoder__transform_io( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_i = 0; + + uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_literal_width = 8u; + if (self->private_impl.f_pending_literal_width_plus_one > 0u) { + self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1u); + } + self->private_impl.f_clear_code = (((uint32_t)(1u)) << self->private_impl.f_literal_width); + self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1u); + self->private_impl.f_save_code = self->private_impl.f_end_code; + self->private_impl.f_prev_code = self->private_impl.f_end_code; + self->private_impl.f_width = (self->private_impl.f_literal_width + 1u); + self->private_impl.f_bits = 0u; + self->private_impl.f_n_bits = 0u; + self->private_impl.f_output_ri = 0u; + self->private_impl.f_output_wi = 0u; + v_i = 0u; + while (v_i < self->private_impl.f_clear_code) { + self->private_data.f_lm1s[v_i] = 0u; + self->private_data.f_suffixes[v_i][0u] = ((uint8_t)(v_i)); + v_i += 1u; + } + while (true) { + wuffs_lzw__decoder__read_from(self, a_src); + if (self->private_impl.f_output_wi > 0u) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_lzw__decoder__write_to(self, a_dst); + if (status.repr) { + goto suspend; + } + } + if (self->private_impl.f_read_from_return_value == 0u) { + break; + } else if (self->private_impl.f_read_from_return_value == 1u) { + continue; + } else if (self->private_impl.f_read_from_return_value == 2u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } else if (self->private_impl.f_read_from_return_value == 3u) { + status = wuffs_base__make_status(wuffs_lzw__error__truncated_input); + goto exit; + } else if (self->private_impl.f_read_from_return_value == 4u) { + status = wuffs_base__make_status(wuffs_lzw__error__bad_code); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o); + goto exit; + } + } + + ok: + self->private_impl.p_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func lzw.decoder.read_from + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_lzw__decoder__read_from( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_src) { + uint32_t v_clear_code = 0; + uint32_t v_end_code = 0; + uint32_t v_save_code = 0; + uint32_t v_prev_code = 0; + uint32_t v_width = 0; + uint32_t v_bits = 0; + uint32_t v_n_bits = 0; + uint32_t v_output_wi = 0; + uint32_t v_code = 0; + uint32_t v_c = 0; + uint32_t v_o = 0; + uint32_t v_steps = 0; + uint8_t v_first_byte = 0; + uint16_t v_lm1_b = 0; + uint16_t v_lm1_a = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_clear_code = self->private_impl.f_clear_code; + v_end_code = self->private_impl.f_end_code; + v_save_code = self->private_impl.f_save_code; + v_prev_code = self->private_impl.f_prev_code; + v_width = self->private_impl.f_width; + v_bits = self->private_impl.f_bits; + v_n_bits = self->private_impl.f_n_bits; + v_output_wi = self->private_impl.f_output_wi; + while (true) { + if (v_n_bits < v_width) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) { + v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits)); + iop_a_src += ((31u - v_n_bits) >> 3u); + v_n_bits |= 24u; + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + self->private_impl.f_read_from_return_value = 3u; + } else { + self->private_impl.f_read_from_return_value = 2u; + } + break; + } else { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + if (v_n_bits >= v_width) { + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + if (a_src && a_src->meta.closed) { + self->private_impl.f_read_from_return_value = 3u; + } else { + self->private_impl.f_read_from_return_value = 2u; + } + break; + } else { + v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); + iop_a_src += 1u; + v_n_bits += 8u; + if (v_n_bits < v_width) { + self->private_impl.f_read_from_return_value = 5u; + break; + } + } + } + } + v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width)); + v_bits >>= v_width; + v_n_bits -= v_width; + if (v_code < v_clear_code) { + self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code)); + v_output_wi = ((v_output_wi + 1u) & 8191u); + if (v_save_code <= 4095u) { + v_lm1_a = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u); + self->private_data.f_lm1s[v_save_code] = v_lm1_a; + if ((v_lm1_a % 8u) != 0u) { + self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code]; + memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code])); + self->private_data.f_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code)); + } else { + self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); + self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_code)); + } + v_save_code += 1u; + if (v_width < 12u) { + v_width += (1u & (v_save_code >> v_width)); + } + v_prev_code = v_code; + } + } else if (v_code <= v_end_code) { + if (v_code == v_end_code) { + self->private_impl.f_read_from_return_value = 0u; + break; + } + v_save_code = v_end_code; + v_prev_code = v_end_code; + v_width = (self->private_impl.f_literal_width + 1u); + } else if (v_code <= v_save_code) { + v_c = v_code; + if (v_code == v_save_code) { + v_c = v_prev_code; + } + v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288u)) & 8191u); + v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191u); + v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3u); + while (true) { + memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8u); + if (v_steps <= 0u) { + break; + } + v_steps -= 1u; + v_o = (((uint32_t)(v_o - 8u)) & 8191u); + v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c])); + } + v_first_byte = self->private_data.f_suffixes[v_c][0u]; + if (v_code == v_save_code) { + self->private_data.f_output[v_output_wi] = v_first_byte; + v_output_wi = ((v_output_wi + 1u) & 8191u); + } + if (v_save_code <= 4095u) { + v_lm1_b = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u); + self->private_data.f_lm1s[v_save_code] = v_lm1_b; + if ((v_lm1_b % 8u) != 0u) { + self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code]; + memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code])); + self->private_data.f_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte; + } else { + self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); + self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte)); + } + v_save_code += 1u; + if (v_width < 12u) { + v_width += (1u & (v_save_code >> v_width)); + } + v_prev_code = v_code; + } + } else { + self->private_impl.f_read_from_return_value = 4u; + break; + } + if (v_output_wi > 4095u) { + self->private_impl.f_read_from_return_value = 1u; + break; + } + } + if (self->private_impl.f_read_from_return_value != 2u) { + while (v_n_bits >= 8u) { + v_n_bits -= 8u; + if (iop_a_src > io1_a_src) { + iop_a_src--; + } else { + self->private_impl.f_read_from_return_value = 5u; + break; + } + } + } + self->private_impl.f_save_code = v_save_code; + self->private_impl.f_prev_code = v_prev_code; + self->private_impl.f_width = v_width; + self->private_impl.f_bits = v_bits; + self->private_impl.f_n_bits = v_n_bits; + self->private_impl.f_output_wi = v_output_wi; + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return wuffs_base__make_empty_struct(); +} + +// -------- func lzw.decoder.write_to + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_lzw__decoder__write_to( + wuffs_lzw__decoder* self, + wuffs_base__io_buffer* a_dst) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__slice_u8 v_s = {0}; + uint64_t v_n = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + + uint32_t coro_susp_point = self->private_impl.p_write_to[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (self->private_impl.f_output_wi > 0u) { + if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) { + status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o); + goto exit; + } + v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output, + self->private_impl.f_output_ri, + self->private_impl.f_output_wi); + v_n = wuffs_base__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s); + if (v_n == ((uint64_t)(v_s.len))) { + self->private_impl.f_output_ri = 0u; + self->private_impl.f_output_wi = 0u; + status = wuffs_base__make_status(NULL); + goto ok; + } + self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)(v_n)))) & 8191u); + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_write_to[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_write_to[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + + return status; +} + +// -------- func lzw.decoder.flush + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8 +wuffs_lzw__decoder__flush( + wuffs_lzw__decoder* self) { + if (!self) { + return wuffs_base__make_slice_u8(NULL, 0); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_slice_u8(NULL, 0); + } + + uint32_t v_ri = 0; + uint32_t v_wi = 0; + + v_ri = self->private_impl.f_output_ri; + v_wi = self->private_impl.f_output_wi; + self->private_impl.f_output_ri = 0u; + self->private_impl.f_output_wi = 0u; + if (v_ri <= v_wi) { + return wuffs_base__make_slice_u8_ij(self->private_data.f_output, v_ri, v_wi); + } + return wuffs_base__make_slice_u8(self->private_data.f_output, 0); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) + +// ---------------- Status Codes Implementations + +const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header"; +const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input"; +const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file"; +const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read"; + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_image_config( + wuffs_netpbm__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_frame_config( + wuffs_netpbm__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_frame( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__swizzle( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_netpbm__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_netpbm__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_netpbm__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_netpbm__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_netpbm__decoder__initialize( + wuffs_netpbm__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_netpbm__decoder* +wuffs_netpbm__decoder__alloc(void) { + wuffs_netpbm__decoder* x = + (wuffs_netpbm__decoder*)(calloc(sizeof(wuffs_netpbm__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_netpbm__decoder__initialize( + x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_netpbm__decoder(void) { + return sizeof(wuffs_netpbm__decoder); +} + +// ---------------- Function Implementations + +// -------- func netpbm.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__get_quirk( + const wuffs_netpbm__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func netpbm.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__set_quirk( + wuffs_netpbm__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func netpbm.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_image_config( + wuffs_netpbm__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func netpbm.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_image_config( + wuffs_netpbm__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_n = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 80u) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if ((v_c < 49u) || (55u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } else if (v_c == 53u) { + self->private_impl.f_pixfmt = 536870920u; + } else if (v_c == 54u) { + self->private_impl.f_pixfmt = 2684356744u; + } else { + status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_c = t_2; + } + if (v_c != 10u) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if ((v_c == 32u) || (v_c == 9u)) { + continue; + } else if (v_c == 35u) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + if (v_c == 10u) { + break; + } + } + continue; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + self->private_impl.f_width = ((uint32_t)((v_c - 48u))); + break; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + if ((v_c == 32u) || (v_c == 9u)) { + break; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + v_n = ((10u * self->private_impl.f_width) + ((uint32_t)((v_c - 48u)))); + if (v_n > 16777215u) { + status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); + goto exit; + } + self->private_impl.f_width = v_n; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_c = t_6; + } + if ((v_c == 32u) || (v_c == 9u)) { + continue; + } else if (v_c == 35u) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_7 = *iop_a_src++; + v_c = t_7; + } + if (v_c == 10u) { + break; + } + } + continue; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + self->private_impl.f_height = ((uint32_t)((v_c - 48u))); + break; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_8 = *iop_a_src++; + v_c = t_8; + } + if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) { + continue; + } else if (v_c == 10u) { + break; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + v_n = ((10u * self->private_impl.f_height) + ((uint32_t)((v_c - 48u)))); + if (v_n > 16777215u) { + status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); + goto exit; + } + self->private_impl.f_height = v_n; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_9 = *iop_a_src++; + v_c = t_9; + } + if ((v_c == 32u) || (v_c == 9u)) { + continue; + } else if (v_c == 35u) { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_10 = *iop_a_src++; + v_c = t_10; + } + if (v_c == 10u) { + break; + } + } + continue; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + self->private_impl.f_max_value = ((uint32_t)((v_c - 48u))); + break; + } + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_11 = *iop_a_src++; + v_c = t_11; + } + if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) { + continue; + } else if (v_c == 10u) { + break; + } else if ((v_c < 48u) || (57u < v_c)) { + status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); + goto exit; + } + v_n = ((10u * self->private_impl.f_max_value) + ((uint32_t)((v_c - 48u)))); + if (v_n > 16777215u) { + status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); + goto exit; + } + self->private_impl.f_max_value = v_n; + } + if (self->private_impl.f_max_value != 255u) { + status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); + goto exit; + } + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + self->private_impl.f_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + false); + } + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func netpbm.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_frame_config( + wuffs_netpbm__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func netpbm.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_frame_config( + wuffs_netpbm__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + self->private_impl.f_frame_config_io_position, + 0u, + false, + false, + 0u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func netpbm.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__decode_frame( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func netpbm.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__do_decode_frame( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src); + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y = 0u; + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette(a_dst), + wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt), + wuffs_base__utility__empty_slice_u8(), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + while (true) { + v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src); + if (wuffs_base__status__is_ok(&v_status)) { + break; + } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + return status; +} + +// -------- func netpbm.decoder.swizzle + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_netpbm__decoder__swizzle( + wuffs_netpbm__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + uint32_t v_src_bytes_per_pixel = 0; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_j = 0; + uint64_t v_n = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + while (true) { + if (self->private_impl.f_dst_x == self->private_impl.f_width) { + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += 1u; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + break; + } + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i >= ((uint64_t)(v_dst.len))) { + v_src_bytes_per_pixel = 1u; + if (self->private_impl.f_pixfmt == 2684356744u) { + v_src_bytes_per_pixel = 3u; + } + v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); + v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); + v_j = v_n; + while (v_j >= 8u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) { + iop_a_src += (v_src_bytes_per_pixel * 8u); + } + v_j -= 8u; + } + while (v_j > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) { + iop_a_src += (v_src_bytes_per_pixel * 1u); + } + v_j -= 1u; + } + } else { + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( + &self->private_impl.f_swizzler, + wuffs_base__slice_u8__subslice_i(v_dst, v_i), + wuffs_base__pixel_buffer__palette(a_dst), + &iop_a_src, + io2_a_src); + } + if (v_n == 0u) { + status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read); + goto ok; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + } + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func netpbm.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_netpbm__decoder__frame_dirty_rect( + const wuffs_netpbm__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func netpbm.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_netpbm__decoder__num_animation_loops( + const wuffs_netpbm__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func netpbm.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__num_decoded_frame_configs( + const wuffs_netpbm__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func netpbm.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__num_decoded_frames( + const wuffs_netpbm__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func netpbm.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__restart_frame( + wuffs_netpbm__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + return wuffs_base__make_status(NULL); +} + +// -------- func netpbm.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_netpbm__decoder__set_report_metadata( + wuffs_netpbm__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func netpbm.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_netpbm__decoder__tell_me_more( + wuffs_netpbm__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + + goto ok; + ok: + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func netpbm.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_netpbm__decoder__history_retain_length( + const wuffs_netpbm__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func netpbm.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_netpbm__decoder__workbuf_len( + const wuffs_netpbm__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) + +// ---------------- Status Codes Implementations + +const char wuffs_nie__error__bad_header[] = "#nie: bad header"; +const char wuffs_nie__error__truncated_input[] = "#nie: truncated input"; +const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file"; +const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read"; + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_image_config( + wuffs_nie__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_frame_config( + wuffs_nie__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_frame( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__swizzle( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_nie__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_nie__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_nie__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_nie__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_nie__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_nie__decoder__initialize( + wuffs_nie__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_nie__decoder* +wuffs_nie__decoder__alloc(void) { + wuffs_nie__decoder* x = + (wuffs_nie__decoder*)(calloc(sizeof(wuffs_nie__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_nie__decoder__initialize( + x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_nie__decoder(void) { + return sizeof(wuffs_nie__decoder); +} + +// ---------------- Function Implementations + +// -------- func nie.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__get_quirk( + const wuffs_nie__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func nie.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__set_quirk( + wuffs_nie__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func nie.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_image_config( + wuffs_nie__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_nie__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func nie.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_image_config( + wuffs_nie__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_a = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_a = t_0; + } + if (v_a != 1169146734u) { + status = wuffs_base__make_status(wuffs_nie__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + v_a = t_1; + } + if (v_a == 879649535u) { + self->private_impl.f_pixfmt = 2164295816u; + } else if (v_a == 946758399u) { + self->private_impl.f_pixfmt = 2164308923u; + } else if (v_a == 879780607u) { + status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file); + goto exit; + } else if (v_a == 946889471u) { + status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file); + goto exit; + } else { + status = wuffs_base__make_status(wuffs_nie__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + v_a = t_2; + } + if (v_a > 2147483647u) { + status = wuffs_base__make_status(wuffs_nie__error__bad_header); + goto exit; + } else if (v_a > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_width = v_a; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)) << 56; + } + } + v_a = t_3; + } + if (v_a > 2147483647u) { + status = wuffs_base__make_status(wuffs_nie__error__bad_header); + goto exit; + } else if (v_a > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_height = v_a; + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + self->private_impl.f_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + 16u, + false); + } + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func nie.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_frame_config( + wuffs_nie__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_nie__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func nie.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_frame_config( + wuffs_nie__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + 16u, + 0u, + false, + false, + 0u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func nie.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__decode_frame( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_nie__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func nie.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__do_decode_frame( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src); + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y = 0u; + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette(a_dst), + wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt), + wuffs_base__utility__empty_slice_u8(), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + while (true) { + v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src); + if (wuffs_base__status__is_ok(&v_status)) { + break; + } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + return status; +} + +// -------- func nie.decoder.swizzle + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_nie__decoder__swizzle( + wuffs_nie__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint32_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row = 0; + uint32_t v_src_bytes_per_pixel = 0; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_i = 0; + uint64_t v_j = 0; + uint64_t v_n = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u); + v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + while (true) { + if (self->private_impl.f_dst_x == self->private_impl.f_width) { + self->private_impl.f_dst_x = 0u; + self->private_impl.f_dst_y += 1u; + if (self->private_impl.f_dst_y >= self->private_impl.f_height) { + break; + } + } + v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); + if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); + } + v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); + if (v_i >= ((uint64_t)(v_dst.len))) { + v_src_bytes_per_pixel = 4u; + if (self->private_impl.f_pixfmt == 2164308923u) { + v_src_bytes_per_pixel = 8u; + } + v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); + v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); + v_j = v_n; + while (v_j >= 8u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) { + iop_a_src += (v_src_bytes_per_pixel * 8u); + } + v_j -= 8u; + } + while (v_j > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) { + iop_a_src += (v_src_bytes_per_pixel * 1u); + } + v_j -= 1u; + } + } else { + v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( + &self->private_impl.f_swizzler, + wuffs_base__slice_u8__subslice_i(v_dst, v_i), + wuffs_base__pixel_buffer__palette(a_dst), + &iop_a_src, + io2_a_src); + } + if (v_n == 0u) { + status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read); + goto ok; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n))); + } + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func nie.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_nie__decoder__frame_dirty_rect( + const wuffs_nie__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func nie.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_nie__decoder__num_animation_loops( + const wuffs_nie__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func nie.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__num_decoded_frame_configs( + const wuffs_nie__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func nie.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__num_decoded_frames( + const wuffs_nie__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func nie.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__restart_frame( + wuffs_nie__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if ((a_index != 0u) || (a_io_position != 16u)) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + return wuffs_base__make_status(NULL); +} + +// -------- func nie.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_nie__decoder__set_report_metadata( + wuffs_nie__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func nie.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_nie__decoder__tell_me_more( + wuffs_nie__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + + goto ok; + ok: + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func nie.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_nie__decoder__history_retain_length( + const wuffs_nie__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func nie.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_nie__decoder__workbuf_len( + const wuffs_nie__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) + +// ---------------- Status Codes Implementations + +const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required"; +const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum"; +const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method"; +const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size"; +const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check"; +const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary"; +const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input"; + +// ---------------- Private Consts + +#define WUFFS_ZLIB__QUIRKS_BASE 2113790976 + +#define WUFFS_ZLIB__QUIRKS_COUNT 1 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_zlib__decoder__do_transform_io( + wuffs_zlib__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +// ---------------- VTables + +const wuffs_base__io_transformer__func_ptrs +wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = { + (uint64_t(*)(const void*, + uint32_t))(&wuffs_zlib__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_zlib__decoder__history_retain_length), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_zlib__decoder__set_quirk), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__io_buffer*, + wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_zlib__decoder__initialize( + wuffs_zlib__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + { + wuffs_base__status z = wuffs_adler32__hasher__initialize( + &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + { + wuffs_base__status z = wuffs_adler32__hasher__initialize( + &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + { + wuffs_base__status z = wuffs_deflate__decoder__initialize( + &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = + wuffs_base__io_transformer__vtable_name; + self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = + (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer); + return wuffs_base__make_status(NULL); +} + +wuffs_zlib__decoder* +wuffs_zlib__decoder__alloc(void) { + wuffs_zlib__decoder* x = + (wuffs_zlib__decoder*)(calloc(sizeof(wuffs_zlib__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_zlib__decoder__initialize( + x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_zlib__decoder(void) { + return sizeof(wuffs_zlib__decoder); +} + +// ---------------- Function Implementations + +// -------- func zlib.decoder.dictionary_id + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_zlib__decoder__dictionary_id( + const wuffs_zlib__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_dict_id_want; +} + +// -------- func zlib.decoder.add_dictionary + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_zlib__decoder__add_dictionary( + wuffs_zlib__decoder* self, + wuffs_base__slice_u8 a_dict) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if (self->private_impl.f_header_complete) { + self->private_impl.f_bad_call_sequence = true; + } else { + self->private_impl.f_dict_id_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict); + wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict); + } + self->private_impl.f_got_dictionary = true; + return wuffs_base__make_empty_struct(); +} + +// -------- func zlib.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_zlib__decoder__get_quirk( + const wuffs_zlib__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + uint32_t v_key = 0; + + if ((a_key == 1u) && self->private_impl.f_ignore_checksum) { + return 1u; + } else if (a_key >= 2113790976u) { + v_key = (a_key - 2113790976u); + if (v_key < 1u) { + if (self->private_impl.f_quirks[v_key]) { + return 1u; + } + } + } + return 0u; +} + +// -------- func zlib.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_zlib__decoder__set_quirk( + wuffs_zlib__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_header_complete) { + self->private_impl.f_bad_call_sequence = true; + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } else if (a_key == 1u) { + self->private_impl.f_ignore_checksum = (a_value > 0u); + return wuffs_base__make_status(NULL); + } else if (a_key >= 2113790976u) { + a_key -= 2113790976u; + if (a_key < 1u) { + self->private_impl.f_quirks[a_key] = (a_value > 0u); + return wuffs_base__make_status(NULL); + } + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func zlib.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_zlib__decoder__history_retain_length( + const wuffs_zlib__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func zlib.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_zlib__decoder__workbuf_len( + const wuffs_zlib__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(1u, 1u); +} + +// -------- func zlib.decoder.transform_io + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_zlib__decoder__transform_io( + wuffs_zlib__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_zlib__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func zlib.decoder.do_transform_io + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_zlib__decoder__do_transform_io( + wuffs_zlib__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint16_t v_x = 0; + uint32_t v_checksum_got = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint32_t v_checksum_want = 0; + uint64_t v_mark = 0; + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; + if (coro_susp_point) { + v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_bad_call_sequence) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if (self->private_impl.f_quirks[0u]) { + } else if ( ! self->private_impl.f_want_dictionary) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint16_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 8) { + t_0 = ((uint16_t)(*scratch >> 48)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_x = t_0; + } + if (((v_x >> 8u) & 15u) != 8u) { + status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method); + goto exit; + } + if ((v_x >> 12u) > 7u) { + status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size); + goto exit; + } + if ((v_x % 31u) != 0u) { + status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check); + goto exit; + } + self->private_impl.f_want_dictionary = ((v_x & 32u) != 0u); + if (self->private_impl.f_want_dictionary) { + self->private_impl.f_dict_id_got = 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + self->private_impl.f_dict_id_want = t_1; + } + status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required); + goto ok; + } else if (self->private_impl.f_got_dictionary) { + status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary); + goto exit; + } + } else if (self->private_impl.f_dict_id_got != self->private_impl.f_dict_id_want) { + if (self->private_impl.f_got_dictionary) { + status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary); + goto exit; + } + status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required); + goto ok; + } + self->private_impl.f_header_complete = true; + while (true) { + v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); + { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf); + v_status = t_2; + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if ( ! self->private_impl.f_ignore_checksum && ! self->private_impl.f_quirks[0u]) { + v_checksum_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + } + if ( ! self->private_impl.f_quirks[0u]) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_transform_io[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)); + } + } + v_checksum_want = t_3; + } + if ( ! self->private_impl.f_ignore_checksum && (v_checksum_got != v_checksum_want)) { + status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum); + goto exit; + } + } + + ok: + self->private_impl.p_do_transform_io[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) + +// ---------------- Status Codes Implementations + +const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number"; +const char wuffs_png__error__bad_checksum[] = "#png: bad checksum"; +const char wuffs_png__error__bad_chunk[] = "#png: bad chunk"; +const char wuffs_png__error__bad_filter[] = "#png: bad filter"; +const char wuffs_png__error__bad_header[] = "#png: bad header"; +const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)"; +const char wuffs_png__error__missing_palette[] = "#png: missing palette"; +const char wuffs_png__error__truncated_input[] = "#png: truncated input"; +const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension"; +const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method"; +const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file"; +const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O"; +const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type"; +const char wuffs_png__error__internal_error_inconsistent_frame_bounds[] = "#png: internal error: inconsistent frame bounds"; +const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length"; +const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input"; + +// ---------------- Private Consts + +#define WUFFS_PNG__ANCILLARY_BIT 32 + +static const uint8_t +WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = { + { + 0, 0, 0, 0, 0, 0, + }, { + 3, 7, 0, 3, 7, 0, + }, { + 3, 3, 4, 3, 7, 0, + }, { + 2, 3, 0, 3, 3, 4, + }, { + 2, 1, 2, 2, 3, 0, + }, { + 1, 1, 0, 2, 1, 2, + }, { + 1, 0, 1, 1, 1, 0, + }, { + 0, 0, 0, 1, 0, 1, + }, +}; + +static const uint8_t +WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 255, 85, 0, 17, 0, 0, 0, +}; + +static const uint8_t +WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 8, 4, 0, 2, 0, 0, 0, +}; + +static const uint8_t +WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { + 1, 0, 3, 1, 2, 0, 4, 0, +}; + +static const uint16_t +WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 67, 68, 69, 70, 71, + 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 84, 85, 86, 87, + 88, 89, 90, 91, 92, 93, 94, 95, + 96, 97, 98, 99, 100, 101, 102, 103, + 104, 105, 106, 107, 108, 109, 110, 111, + 112, 113, 114, 115, 116, 117, 118, 119, + 120, 121, 122, 123, 124, 125, 126, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 41410, 41666, 41922, 42178, 42434, 42690, 42946, + 43202, 43458, 43714, 43970, 44226, 44482, 44738, 44994, + 45250, 45506, 45762, 46018, 46274, 46530, 46786, 47042, + 47298, 47554, 47810, 48066, 48322, 48578, 48834, 49090, + 32963, 33219, 33475, 33731, 33987, 34243, 34499, 34755, + 35011, 35267, 35523, 35779, 36035, 36291, 36547, 36803, + 37059, 37315, 37571, 37827, 38083, 38339, 38595, 38851, + 39107, 39363, 39619, 39875, 40131, 40387, 40643, 40899, + 41155, 41411, 41667, 41923, 42179, 42435, 42691, 42947, + 43203, 43459, 43715, 43971, 44227, 44483, 44739, 44995, + 45251, 45507, 45763, 46019, 46275, 46531, 46787, 47043, + 47299, 47555, 47811, 48067, 48323, 48579, 48835, 49091, +}; + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_2( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev); +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_image_config( + wuffs_png__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_ihdr( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__assign_filter_distance( + wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static uint64_t +wuffs_png__decoder__calculate_bytes_per_row( + const wuffs_png__decoder* self, + uint32_t a_width); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__choose_filter_implementations( + wuffs_png__decoder* self); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_other_chunk( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src, + bool a_framy); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_actl( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_chrm( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_exif( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_fctl( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_gama( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_iccp( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_plte( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_srgb( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_trns( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_frame_config( + wuffs_png__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__skip_frame( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_frame( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_pass( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_tell_me_more( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle__choosy_default( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle_tricky( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_png__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_png__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_png__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_png__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_png__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_png__decoder__initialize( + wuffs_png__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default; + self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default; + self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default; + self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default; + + { + wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize( + &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + { + wuffs_base__status z = wuffs_zlib__decoder__initialize( + &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options); + if (z.repr) { + return z; + } + } + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_png__decoder* +wuffs_png__decoder__alloc(void) { + wuffs_png__decoder* x = + (wuffs_png__decoder*)(calloc(sizeof(wuffs_png__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_png__decoder__initialize( + x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_png__decoder(void) { + return sizeof(wuffs_png__decoder); +} + +// ---------------- Function Implementations + +// ‼ WUFFS MULTI-FILE SECTION +arm_neon +// -------- func png.decoder.filter_1_distance_4_arm_neon + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + wuffs_base__slice_u8 v_curr = {0}; + uint8x8_t v_fa = {0}; + uint8x8_t v_fx = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, v_fa); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, v_fa); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + } + v_curr.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, v_fa); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + } + v_curr.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +// ‼ WUFFS MULTI-FILE SECTION -arm_neon + +// ‼ WUFFS MULTI-FILE SECTION +arm_neon +// -------- func png.decoder.filter_3_distance_4_arm_neon + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint8x8_t v_fa = {0}; + uint8x8_t v_fb = {0}; + uint8x8_t v_fx = {0}; + + if (((uint64_t)(a_prev.len)) == 0u) { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + } + v_curr.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + } + v_curr.len = 0; + } + } else { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +// ‼ WUFFS MULTI-FILE SECTION -arm_neon + +// ‼ WUFFS MULTI-FILE SECTION +arm_neon +// -------- func png.decoder.filter_4_distance_3_arm_neon + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint8x8_t v_fa = {0}; + uint8x8_t v_fb = {0}; + uint8x8_t v_fc = {0}; + uint8x8_t v_fx = {0}; + uint16x8_t v_fafb = {0}; + uint16x8_t v_fcfc = {0}; + uint16x8_t v_pa = {0}; + uint16x8_t v_pb = {0}; + uint16x8_t v_pc = {0}; + uint16x8_t v_cmpab = {0}; + uint16x8_t v_cmpac = {0}; + uint8x8_t v_picka = {0}; + uint8x8_t v_pickb = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6); + while (v_curr.ptr < i_end0_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 3; + v_prev.ptr += 3; + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3); + while (v_curr.ptr < i_end1_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 3; + v_prev.len = 3; + uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end2_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +// ‼ WUFFS MULTI-FILE SECTION -arm_neon + +// ‼ WUFFS MULTI-FILE SECTION +arm_neon +// -------- func png.decoder.filter_4_distance_4_arm_neon + +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_arm_neon( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint8x8_t v_fa = {0}; + uint8x8_t v_fb = {0}; + uint8x8_t v_fc = {0}; + uint8x8_t v_fx = {0}; + uint16x8_t v_fafb = {0}; + uint16x8_t v_fcfc = {0}; + uint16x8_t v_pa = {0}; + uint16x8_t v_pb = {0}; + uint16x8_t v_pc = {0}; + uint16x8_t v_cmpab = {0}; + uint16x8_t v_cmpac = {0}; + uint8x8_t v_picka = {0}; + uint8x8_t v_pickb = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_fafb = vaddl_u8(v_fa, v_fb); + v_fcfc = vaddl_u8(v_fc, v_fc); + v_pa = vabdl_u8(v_fb, v_fc); + v_pb = vabdl_u8(v_fa, v_fc); + v_pc = vabdq_u16(v_fafb, v_fcfc); + v_cmpab = vcleq_u16(v_pa, v_pb); + v_cmpac = vcleq_u16(v_pa, v_pc); + v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); + v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); + v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u)); + v_fc = v_fb; + v_fa = v_fx; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) +// ‼ WUFFS MULTI-FILE SECTION -arm_neon + +// -------- func png.decoder.filter_1 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + return (*self->private_impl.choosy_filter_1)(self, a_curr); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + uint64_t v_filter_distance = 0; + uint8_t v_fa = 0; + uint64_t v_i_start = 0; + uint64_t v_i = 0; + + v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); + v_i_start = 0u; + while (v_i_start < v_filter_distance) { + v_fa = 0u; + v_i = v_i_start; + while (v_i < ((uint64_t)(a_curr.len))) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa)); + v_fa = a_curr.ptr[v_i]; + v_i += v_filter_distance; + } + v_i_start += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_1_distance_3_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + wuffs_base__slice_u8 v_curr = {0}; + uint8_t v_fa0 = 0; + uint8_t v_fa1 = 0; + uint8_t v_fa2 = 0; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 3; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + } + v_curr.len = 3; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end1_curr) { + v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + } + v_curr.len = 0; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_1_distance_4_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + wuffs_base__slice_u8 v_curr = {0}; + uint8_t v_fa0 = 0; + uint8_t v_fa1 = 0; + uint8_t v_fa2 = 0; + uint8_t v_fa3 = 0; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3u])); + v_curr.ptr[3u] = v_fa3; + v_curr.ptr += 4; + } + v_curr.len = 0; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_2 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_2( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + uint64_t v_n = 0; + uint64_t v_i = 0; + + v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); + v_i = 0u; + while (v_i < v_n) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i])); + v_i += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_3 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + uint64_t v_filter_distance = 0; + uint64_t v_n = 0; + uint64_t v_i = 0; + + v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); + if (((uint64_t)(a_prev.len)) == 0u) { + v_i = v_filter_distance; + while (v_i < ((uint64_t)(a_curr.len))) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_curr.ptr[(v_i - v_filter_distance)] / 2u))); + v_i += 1u; + } + } else { + v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); + v_i = 0u; + while ((v_i < v_n) && (v_i < v_filter_distance)) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_prev.ptr[v_i] / 2u))); + v_i += 1u; + } + v_i = v_filter_distance; + while (v_i < v_n) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2u))))); + v_i += 1u; + } + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_3_distance_3_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint8_t v_fa0 = 0; + uint8_t v_fa1 = 0; + uint8_t v_fa2 = 0; + + if (((uint64_t)(a_prev.len)) == 0u) { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 3; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + } + v_curr.len = 3; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end1_curr) { + v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + } + v_curr.len = 0; + } + } else { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 3; + v_prev.len = 3; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + v_prev.ptr += 3; + v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 3; + v_prev.len = 3; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end1_curr) { + v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 0; + v_prev.len = 0; + } + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_3_distance_4_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint8_t v_fa0 = 0; + uint8_t v_fa1 = 0; + uint8_t v_fa2 = 0; + uint8_t v_fa3 = 0; + + if (((uint64_t)(a_prev.len)) == 0u) { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_fa3 = ((uint8_t)((v_fa3 / 2u) + v_curr.ptr[3u])); + v_curr.ptr[3u] = v_fa3; + v_curr.ptr += 4; + } + v_curr.len = 0; + } + } else { + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end0_curr) { + v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u])); + v_curr.ptr[0u] = v_fa0; + v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u])); + v_curr.ptr[1u] = v_fa1; + v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u])); + v_curr.ptr[2u] = v_fa2; + v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3u]))) / 2u))) + v_curr.ptr[3u])); + v_curr.ptr[3u] = v_fa3; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_4 + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4__choosy_default( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + uint64_t v_filter_distance = 0; + uint64_t v_n = 0; + uint64_t v_i = 0; + uint32_t v_fa = 0; + uint32_t v_fb = 0; + uint32_t v_fc = 0; + uint32_t v_pp = 0; + uint32_t v_pa = 0; + uint32_t v_pb = 0; + uint32_t v_pc = 0; + + v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); + v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); + v_i = 0u; + while ((v_i < v_n) && (v_i < v_filter_distance)) { + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i])); + v_i += 1u; + } + v_i = v_filter_distance; + while (v_i < v_n) { + v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])); + v_fb = ((uint32_t)(a_prev.ptr[v_i])); + v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)])); + v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc)); + v_pa = ((uint32_t)(v_pp - v_fa)); + if (v_pa >= 2147483648u) { + v_pa = ((uint32_t)(0u - v_pa)); + } + v_pb = ((uint32_t)(v_pp - v_fb)); + if (v_pb >= 2147483648u) { + v_pb = ((uint32_t)(0u - v_pb)); + } + v_pc = ((uint32_t)(v_pp - v_fc)); + if (v_pc >= 2147483648u) { + v_pc = ((uint32_t)(0u - v_pc)); + } + if ((v_pa <= v_pb) && (v_pa <= v_pc)) { + } else if (v_pb <= v_pc) { + v_fa = v_fb; + } else { + v_fa = v_fc; + } + a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(v_fa)))); + v_i += 1u; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_4_distance_3_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint32_t v_fa0 = 0; + uint32_t v_fa1 = 0; + uint32_t v_fa2 = 0; + uint32_t v_fb0 = 0; + uint32_t v_fb1 = 0; + uint32_t v_fb2 = 0; + uint32_t v_fc0 = 0; + uint32_t v_fc1 = 0; + uint32_t v_fc2 = 0; + uint32_t v_pp0 = 0; + uint32_t v_pp1 = 0; + uint32_t v_pp2 = 0; + uint32_t v_pa0 = 0; + uint32_t v_pa1 = 0; + uint32_t v_pa2 = 0; + uint32_t v_pb0 = 0; + uint32_t v_pb1 = 0; + uint32_t v_pb2 = 0; + uint32_t v_pc0 = 0; + uint32_t v_pc1 = 0; + uint32_t v_pc2 = 0; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 3; + v_prev.len = 3; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end0_curr) { + v_fb0 = ((uint32_t)(v_prev.ptr[0u])); + v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0)); + v_pa0 = ((uint32_t)(v_pp0 - v_fa0)); + if (v_pa0 >= 2147483648u) { + v_pa0 = ((uint32_t)(0u - v_pa0)); + } + v_pb0 = ((uint32_t)(v_pp0 - v_fb0)); + if (v_pb0 >= 2147483648u) { + v_pb0 = ((uint32_t)(0u - v_pb0)); + } + v_pc0 = ((uint32_t)(v_pp0 - v_fc0)); + if (v_pc0 >= 2147483648u) { + v_pc0 = ((uint32_t)(0u - v_pc0)); + } + if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) { + } else if (v_pb0 <= v_pc0) { + v_fa0 = v_fb0; + } else { + v_fa0 = v_fc0; + } + v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0)))); + v_fa0 = ((uint32_t)(v_curr.ptr[0u])); + v_fc0 = v_fb0; + v_fb1 = ((uint32_t)(v_prev.ptr[1u])); + v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1)); + v_pa1 = ((uint32_t)(v_pp1 - v_fa1)); + if (v_pa1 >= 2147483648u) { + v_pa1 = ((uint32_t)(0u - v_pa1)); + } + v_pb1 = ((uint32_t)(v_pp1 - v_fb1)); + if (v_pb1 >= 2147483648u) { + v_pb1 = ((uint32_t)(0u - v_pb1)); + } + v_pc1 = ((uint32_t)(v_pp1 - v_fc1)); + if (v_pc1 >= 2147483648u) { + v_pc1 = ((uint32_t)(0u - v_pc1)); + } + if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) { + } else if (v_pb1 <= v_pc1) { + v_fa1 = v_fb1; + } else { + v_fa1 = v_fc1; + } + v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1)))); + v_fa1 = ((uint32_t)(v_curr.ptr[1u])); + v_fc1 = v_fb1; + v_fb2 = ((uint32_t)(v_prev.ptr[2u])); + v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2)); + v_pa2 = ((uint32_t)(v_pp2 - v_fa2)); + if (v_pa2 >= 2147483648u) { + v_pa2 = ((uint32_t)(0u - v_pa2)); + } + v_pb2 = ((uint32_t)(v_pp2 - v_fb2)); + if (v_pb2 >= 2147483648u) { + v_pb2 = ((uint32_t)(0u - v_pb2)); + } + v_pc2 = ((uint32_t)(v_pp2 - v_fc2)); + if (v_pc2 >= 2147483648u) { + v_pc2 = ((uint32_t)(0u - v_pc2)); + } + if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) { + } else if (v_pb2 <= v_pc2) { + v_fa2 = v_fb2; + } else { + v_fa2 = v_fc2; + } + v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2)))); + v_fa2 = ((uint32_t)(v_curr.ptr[2u])); + v_fc2 = v_fb2; + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.filter_4_distance_4_fallback + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_fallback( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + uint32_t v_fa0 = 0; + uint32_t v_fa1 = 0; + uint32_t v_fa2 = 0; + uint32_t v_fa3 = 0; + uint32_t v_fb0 = 0; + uint32_t v_fb1 = 0; + uint32_t v_fb2 = 0; + uint32_t v_fb3 = 0; + uint32_t v_fc0 = 0; + uint32_t v_fc1 = 0; + uint32_t v_fc2 = 0; + uint32_t v_fc3 = 0; + uint32_t v_pp0 = 0; + uint32_t v_pp1 = 0; + uint32_t v_pp2 = 0; + uint32_t v_pp3 = 0; + uint32_t v_pa0 = 0; + uint32_t v_pa1 = 0; + uint32_t v_pa2 = 0; + uint32_t v_pa3 = 0; + uint32_t v_pb0 = 0; + uint32_t v_pb1 = 0; + uint32_t v_pb2 = 0; + uint32_t v_pb3 = 0; + uint32_t v_pc0 = 0; + uint32_t v_pc1 = 0; + uint32_t v_pc2 = 0; + uint32_t v_pc3 = 0; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end0_curr) { + v_fb0 = ((uint32_t)(v_prev.ptr[0u])); + v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0)); + v_pa0 = ((uint32_t)(v_pp0 - v_fa0)); + if (v_pa0 >= 2147483648u) { + v_pa0 = ((uint32_t)(0u - v_pa0)); + } + v_pb0 = ((uint32_t)(v_pp0 - v_fb0)); + if (v_pb0 >= 2147483648u) { + v_pb0 = ((uint32_t)(0u - v_pb0)); + } + v_pc0 = ((uint32_t)(v_pp0 - v_fc0)); + if (v_pc0 >= 2147483648u) { + v_pc0 = ((uint32_t)(0u - v_pc0)); + } + if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) { + } else if (v_pb0 <= v_pc0) { + v_fa0 = v_fb0; + } else { + v_fa0 = v_fc0; + } + v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0)))); + v_fa0 = ((uint32_t)(v_curr.ptr[0u])); + v_fc0 = v_fb0; + v_fb1 = ((uint32_t)(v_prev.ptr[1u])); + v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1)); + v_pa1 = ((uint32_t)(v_pp1 - v_fa1)); + if (v_pa1 >= 2147483648u) { + v_pa1 = ((uint32_t)(0u - v_pa1)); + } + v_pb1 = ((uint32_t)(v_pp1 - v_fb1)); + if (v_pb1 >= 2147483648u) { + v_pb1 = ((uint32_t)(0u - v_pb1)); + } + v_pc1 = ((uint32_t)(v_pp1 - v_fc1)); + if (v_pc1 >= 2147483648u) { + v_pc1 = ((uint32_t)(0u - v_pc1)); + } + if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) { + } else if (v_pb1 <= v_pc1) { + v_fa1 = v_fb1; + } else { + v_fa1 = v_fc1; + } + v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1)))); + v_fa1 = ((uint32_t)(v_curr.ptr[1u])); + v_fc1 = v_fb1; + v_fb2 = ((uint32_t)(v_prev.ptr[2u])); + v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2)); + v_pa2 = ((uint32_t)(v_pp2 - v_fa2)); + if (v_pa2 >= 2147483648u) { + v_pa2 = ((uint32_t)(0u - v_pa2)); + } + v_pb2 = ((uint32_t)(v_pp2 - v_fb2)); + if (v_pb2 >= 2147483648u) { + v_pb2 = ((uint32_t)(0u - v_pb2)); + } + v_pc2 = ((uint32_t)(v_pp2 - v_fc2)); + if (v_pc2 >= 2147483648u) { + v_pc2 = ((uint32_t)(0u - v_pc2)); + } + if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) { + } else if (v_pb2 <= v_pc2) { + v_fa2 = v_fb2; + } else { + v_fa2 = v_fc2; + } + v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2)))); + v_fa2 = ((uint32_t)(v_curr.ptr[2u])); + v_fc2 = v_fb2; + v_fb3 = ((uint32_t)(v_prev.ptr[3u])); + v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3)); + v_pa3 = ((uint32_t)(v_pp3 - v_fa3)); + if (v_pa3 >= 2147483648u) { + v_pa3 = ((uint32_t)(0u - v_pa3)); + } + v_pb3 = ((uint32_t)(v_pp3 - v_fb3)); + if (v_pb3 >= 2147483648u) { + v_pb3 = ((uint32_t)(0u - v_pb3)); + } + v_pc3 = ((uint32_t)(v_pp3 - v_fc3)); + if (v_pc3 >= 2147483648u) { + v_pc3 = ((uint32_t)(0u - v_pc3)); + } + if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) { + } else if (v_pb3 <= v_pc3) { + v_fa3 = v_fb3; + } else { + v_fa3 = v_fc3; + } + v_curr.ptr[3u] = ((uint8_t)(v_curr.ptr[3u] + ((uint8_t)(v_fa3)))); + v_fa3 = ((uint32_t)(v_curr.ptr[3u])); + v_fc3 = v_fb3; + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func png.decoder.filter_1_distance_4_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_1_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr) { + wuffs_base__slice_u8 v_curr = {0}; + __m128i v_x128 = {0}; + __m128i v_a128 = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_a128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_a128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + } + v_curr.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_a128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + } + v_curr.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func png.decoder.filter_3_distance_4_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_3_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + __m128i v_x128 = {0}; + __m128i v_a128 = {0}; + __m128i v_b128 = {0}; + __m128i v_p128 = {0}; + __m128i v_k128 = {0}; + + if (((uint64_t)(a_prev.len)) == 0u) { + v_k128 = _mm_set1_epi8((int8_t)(254u)); + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + v_curr.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + } + v_curr.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + } + v_curr.len = 0; + } + } else { + v_k128 = _mm_set1_epi8((int8_t)(1u)); + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_p128 = _mm_avg_epu8(v_a128, v_b128); + v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_p128 = _mm_avg_epu8(v_a128, v_b128); + v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_p128 = _mm_avg_epu8(v_a128, v_b128); + v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func png.decoder.filter_4_distance_3_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_3_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + __m128i v_x128 = {0}; + __m128i v_a128 = {0}; + __m128i v_b128 = {0}; + __m128i v_c128 = {0}; + __m128i v_p128 = {0}; + __m128i v_pa128 = {0}; + __m128i v_pb128 = {0}; + __m128i v_pc128 = {0}; + __m128i v_smallest128 = {0}; + __m128i v_z128 = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6); + while (v_curr.ptr < i_end0_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 3; + v_prev.ptr += 3; + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3); + while (v_curr.ptr < i_end1_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 3; + v_prev.len = 3; + uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); + while (v_curr.ptr < i_end2_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 3; + v_prev.ptr += 3; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 +// -------- func png.decoder.filter_4_distance_4_x86_sse42 + +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__filter_4_distance_4_x86_sse42( + wuffs_png__decoder* self, + wuffs_base__slice_u8 a_curr, + wuffs_base__slice_u8 a_prev) { + wuffs_base__slice_u8 v_curr = {0}; + wuffs_base__slice_u8 v_prev = {0}; + __m128i v_x128 = {0}; + __m128i v_a128 = {0}; + __m128i v_b128 = {0}; + __m128i v_c128 = {0}; + __m128i v_p128 = {0}; + __m128i v_pa128 = {0}; + __m128i v_pb128 = {0}; + __m128i v_pc128 = {0}; + __m128i v_smallest128 = {0}; + __m128i v_z128 = {0}; + + { + wuffs_base__slice_u8 i_slice_curr = a_curr; + v_curr.ptr = i_slice_curr.ptr; + wuffs_base__slice_u8 i_slice_prev = a_prev; + v_prev.ptr = i_slice_prev.ptr; + i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); + while (v_curr.ptr < i_end0_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 4; + v_prev.len = 4; + uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); + while (v_curr.ptr < i_end1_curr) { + v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); + v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); + v_pa128 = _mm_sub_epi16(v_b128, v_c128); + v_pb128 = _mm_sub_epi16(v_a128, v_c128); + v_pc128 = _mm_add_epi16(v_pa128, v_pb128); + v_pa128 = _mm_abs_epi16(v_pa128); + v_pb128 = _mm_abs_epi16(v_pb128); + v_pc128 = _mm_abs_epi16(v_pc128); + v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); + v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); + v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); + v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); + v_x128 = _mm_add_epi8(v_x128, v_p128); + v_a128 = v_x128; + v_c128 = v_b128; + v_x128 = _mm_packus_epi16(v_x128, v_x128); + wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); + v_curr.ptr += 4; + v_prev.ptr += 4; + } + v_curr.len = 0; + v_prev.len = 0; + } + return wuffs_base__make_empty_struct(); +} +#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) +// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 + +// -------- func png.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__get_quirk( + const wuffs_png__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if ((a_key == 1u) && self->private_impl.f_ignore_checksum) { + return 1u; + } + return 0u; +} + +// -------- func png.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__set_quirk( + wuffs_png__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (a_key == 1u) { + self->private_impl.f_ignore_checksum = (a_value > 0u); + wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value); + return wuffs_base__make_status(NULL); + } + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func png.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_image_config( + wuffs_png__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_png__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func png.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_image_config( + wuffs_png__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_magic = 0; + uint64_t v_mark = 0; + uint32_t v_checksum_have = 0; + uint32_t v_checksum_want = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + if (coro_susp_point) { + v_checksum_have = self->private_data.s_do_decode_image_config[0].v_checksum_have; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if ( ! self->private_impl.f_seen_ihdr) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint64_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) { + t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src); + iop_a_src += 8; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; + if (num_bits_0 == 56) { + t_0 = ((uint64_t)(*scratch)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)) << 56; + } + } + v_magic = t_0; + } + if (v_magic != 727905341920923785u) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint64_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) { + t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src); + iop_a_src += 8; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 56) { + t_1 = ((uint64_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + v_magic = t_1; + } + if (v_magic != 5927942488114331648u) { + if (v_magic == 5278895250759221248u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension); + goto exit; + } + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + self->private_impl.f_chunk_type_array[0u] = 73u; + self->private_impl.f_chunk_type_array[1u] = 72u; + self->private_impl.f_chunk_type_array[2u] = 68u; + self->private_impl.f_chunk_type_array[3u] = 82u; + wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, + sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); + while (true) { + v_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src); + v_status = t_2; + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if ( ! self->private_impl.f_ignore_checksum) { + v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)); + } + } + v_checksum_want = t_3; + } + if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) { + status = wuffs_base__make_status(wuffs_png__error__bad_checksum); + goto exit; + } + self->private_impl.f_seen_ihdr = true; + } else if (self->private_impl.f_metadata_fourcc != 0u) { + self->private_impl.f_call_sequence = 16u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + continue; + } + self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u))); + if (self->private_impl.f_chunk_type == 1413563465u) { + if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) { + break; + } + self->private_impl.f_seen_idat = true; + } else if (self->private_impl.f_chunk_type == 1413571686u) { + if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) { + break; + } + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + iop_a_src += 8u; + if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) { + self->private_impl.f_chunk_type_array[0u] = ((uint8_t)((self->private_impl.f_chunk_type >> 0u))); + self->private_impl.f_chunk_type_array[1u] = ((uint8_t)((self->private_impl.f_chunk_type >> 8u))); + self->private_impl.f_chunk_type_array[2u] = ((uint8_t)((self->private_impl.f_chunk_type >> 16u))); + self->private_impl.f_chunk_type_array[3u] = ((uint8_t)((self->private_impl.f_chunk_type >> 24u))); + wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, + sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); + } + while (true) { + v_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false); + v_status = t_4; + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) { + v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); + } + if (self->private_impl.f_metadata_fourcc != 0u) { + self->private_impl.f_call_sequence = 16u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + uint32_t t_5; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); + if (num_bits_5 == 24) { + t_5 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_5 += 8u; + *scratch |= ((uint64_t)(num_bits_5)); + } + } + v_checksum_want = t_5; + } + if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u) && (v_checksum_have != v_checksum_want)) { + status = wuffs_base__make_status(wuffs_png__error__bad_checksum); + goto exit; + } + } + if ((self->private_impl.f_color_type == 3u) && ! self->private_impl.f_seen_plte) { + status = wuffs_base__make_status(wuffs_png__error__missing_palette); + goto exit; + } + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position; + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + self->private_impl.f_dst_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_first_config_io_position, + ((self->private_impl.f_color_type <= 3u) && ! self->private_impl.f_seen_trns)); + } + if ( ! self->private_impl.f_seen_actl) { + self->private_impl.f_num_animation_frames_value = 1u; + self->private_impl.f_first_rect_x0 = 0u; + self->private_impl.f_first_rect_y0 = 0u; + self->private_impl.f_first_rect_x1 = self->private_impl.f_width; + self->private_impl.f_first_rect_y1 = self->private_impl.f_height; + self->private_impl.f_first_duration = 0u; + self->private_impl.f_first_disposal = 0u; + self->private_impl.f_first_overwrite_instead_of_blend = false; + } + self->private_impl.f_call_sequence = 32u; + + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_image_config[0].v_checksum_have = v_checksum_have; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_ihdr + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_ihdr( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_a32 = 0; + uint8_t v_a8 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_ihdr[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_ihdr[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_a32 = t_0; + } + if ((v_a32 == 0u) || (v_a32 > 2147483647u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } else if (v_a32 > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_width = v_a32; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_ihdr[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_a32 = t_1; + } + if ((v_a32 == 0u) || (v_a32 > 2147483647u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } else if (v_a32 > 16777215u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + self->private_impl.f_height = v_a32; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + v_a8 = t_2; + } + if (v_a8 > 16u) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + self->private_impl.f_depth = v_a8; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_a8 = t_3; + } + if ((v_a8 == 1u) || (v_a8 == 5u) || (v_a8 > 6u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + self->private_impl.f_color_type = v_a8; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_a8 = t_4; + } + if (v_a8 != 0u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_a8 = t_5; + } + if (v_a8 != 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_a8 = t_6; + } + if (v_a8 == 0u) { + self->private_impl.f_interlace_pass = 0u; + } else if (v_a8 == 1u) { + self->private_impl.f_interlace_pass = 1u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + self->private_impl.f_filter_distance = 0u; + wuffs_png__decoder__assign_filter_distance(self); + if (self->private_impl.f_filter_distance == 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_header); + goto exit; + } + self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1u + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width))); + wuffs_png__decoder__choose_filter_implementations(self); + + goto ok; + ok: + self->private_impl.p_decode_ihdr[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_ihdr[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.assign_filter_distance + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__assign_filter_distance( + wuffs_png__decoder* self) { + if (self->private_impl.f_depth < 8u) { + if ((self->private_impl.f_depth != 1u) && (self->private_impl.f_depth != 2u) && (self->private_impl.f_depth != 4u)) { + return wuffs_base__make_empty_struct(); + } else if (self->private_impl.f_color_type == 0u) { + self->private_impl.f_dst_pixfmt = 536870920u; + self->private_impl.f_src_pixfmt = 536870920u; + } else if (self->private_impl.f_color_type == 3u) { + self->private_impl.f_dst_pixfmt = 2198077448u; + self->private_impl.f_src_pixfmt = 2198077448u; + } else { + return wuffs_base__make_empty_struct(); + } + self->private_impl.f_filter_distance = 1u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } else if (self->private_impl.f_color_type == 0u) { + if (self->private_impl.f_depth == 8u) { + self->private_impl.f_dst_pixfmt = 536870920u; + self->private_impl.f_src_pixfmt = 536870920u; + self->private_impl.f_filter_distance = 1u; + } else if (self->private_impl.f_depth == 16u) { + if (self->private_impl.f_interlace_pass == 0u) { + self->private_impl.f_dst_pixfmt = 536870923u; + self->private_impl.f_src_pixfmt = 537919499u; + } else { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + } + self->private_impl.f_filter_distance = 2u; + } + } else if (self->private_impl.f_color_type == 2u) { + if (self->private_impl.f_depth == 8u) { + self->private_impl.f_dst_pixfmt = 2147485832u; + self->private_impl.f_src_pixfmt = 2684356744u; + self->private_impl.f_filter_distance = 3u; + } else if (self->private_impl.f_depth == 16u) { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + self->private_impl.f_filter_distance = 6u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } + } else if (self->private_impl.f_color_type == 3u) { + if (self->private_impl.f_depth == 8u) { + self->private_impl.f_dst_pixfmt = 2198077448u; + self->private_impl.f_src_pixfmt = 2198077448u; + self->private_impl.f_filter_distance = 1u; + } + } else if (self->private_impl.f_color_type == 4u) { + if (self->private_impl.f_depth == 8u) { + self->private_impl.f_dst_pixfmt = 2164295816u; + self->private_impl.f_src_pixfmt = 2164295816u; + self->private_impl.f_filter_distance = 2u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } else if (self->private_impl.f_depth == 16u) { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + self->private_impl.f_filter_distance = 4u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } + } else if (self->private_impl.f_color_type == 6u) { + if (self->private_impl.f_depth == 8u) { + self->private_impl.f_dst_pixfmt = 2164295816u; + self->private_impl.f_src_pixfmt = 2701166728u; + self->private_impl.f_filter_distance = 4u; + } else if (self->private_impl.f_depth == 16u) { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + self->private_impl.f_filter_distance = 8u; + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + } + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.calculate_bytes_per_row + +WUFFS_BASE__GENERATED_C_CODE +static uint64_t +wuffs_png__decoder__calculate_bytes_per_row( + const wuffs_png__decoder* self, + uint32_t a_width) { + uint64_t v_bytes_per_channel = 0; + + if (self->private_impl.f_depth == 1u) { + return ((uint64_t)(((a_width + 7u) / 8u))); + } else if (self->private_impl.f_depth == 2u) { + return ((uint64_t)(((a_width + 3u) / 4u))); + } else if (self->private_impl.f_depth == 4u) { + return ((uint64_t)(((a_width + 1u) / 2u))); + } + v_bytes_per_channel = ((uint64_t)((self->private_impl.f_depth >> 3u))); + return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type]))); +} + +// -------- func png.decoder.choose_filter_implementations + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_png__decoder__choose_filter_implementations( + wuffs_png__decoder* self) { + if (self->private_impl.f_filter_distance == 3u) { + self->private_impl.choosy_filter_1 = ( + &wuffs_png__decoder__filter_1_distance_3_fallback); + self->private_impl.choosy_filter_3 = ( + &wuffs_png__decoder__filter_3_distance_3_fallback); + self->private_impl.choosy_filter_4 = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 : +#endif + &wuffs_png__decoder__filter_4_distance_3_fallback); + } else if (self->private_impl.f_filter_distance == 4u) { + self->private_impl.choosy_filter_1 = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 : +#endif + &wuffs_png__decoder__filter_1_distance_4_fallback); + self->private_impl.choosy_filter_3 = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 : +#endif + &wuffs_png__decoder__filter_3_distance_4_fallback); + self->private_impl.choosy_filter_4 = ( +#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) + wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon : +#endif +#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) + wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 : +#endif + &wuffs_png__decoder__filter_4_distance_4_fallback); + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.decode_other_chunk + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_other_chunk( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src, + bool a_framy) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_chunk_type == 1163152464u) && ! a_framy) { + if (self->private_impl.f_seen_plte) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } else if (self->private_impl.f_color_type == 3u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_png__decoder__decode_plte(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if ((self->private_impl.f_color_type == 2u) || (self->private_impl.f_color_type == 6u)) { + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_seen_plte = true; + } else if ((self->private_impl.f_chunk_type & 32u) == 0u) { + if (self->private_impl.f_chunk_type != 1413563465u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + } + if (self->private_impl.f_chunk_type == 1716082789u) { + if (self->private_impl.f_report_metadata_exif) { + if (self->private_impl.f_seen_exif) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_png__decoder__decode_exif(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_exif = true; + } + } else if ((self->private_impl.f_chunk_type == 1951945833u) || (self->private_impl.f_chunk_type == 1951942004u) || (self->private_impl.f_chunk_type == 1951945850u)) { + if (self->private_impl.f_report_metadata_kvp) { + self->private_impl.f_metadata_flavor = 4u; + self->private_impl.f_metadata_fourcc = 1263947851u; + self->private_impl.f_metadata_x = 0u; + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + } + } else if ( ! a_framy) { + if (self->private_impl.f_chunk_type == 1280598881u) { + if (self->private_impl.f_seen_actl) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + status = wuffs_png__decoder__decode_actl(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_actl = true; + } else if (self->private_impl.f_chunk_type == 1297238115u) { + if (self->private_impl.f_report_metadata_chrm) { + if (self->private_impl.f_seen_chrm) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + status = wuffs_png__decoder__decode_chrm(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_chrm = true; + } + } else if (self->private_impl.f_chunk_type == 1280598886u) { + if (self->private_impl.f_seen_fctl) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + status = wuffs_png__decoder__decode_fctl(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_fctl = true; + } else if (self->private_impl.f_chunk_type == 1095582055u) { + if (self->private_impl.f_report_metadata_gama) { + if (self->private_impl.f_seen_gama) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + status = wuffs_png__decoder__decode_gama(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_gama = true; + } + } else if (self->private_impl.f_chunk_type == 1346585449u) { + if (self->private_impl.f_report_metadata_iccp) { + if (self->private_impl.f_seen_iccp) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + status = wuffs_png__decoder__decode_iccp(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_iccp = true; + } + } else if (self->private_impl.f_chunk_type == 1111970419u) { + if (self->private_impl.f_report_metadata_srgb) { + if (self->private_impl.f_seen_srgb) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + status = wuffs_png__decoder__decode_srgb(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_srgb = true; + } + } else if (self->private_impl.f_chunk_type == 1397641844u) { + if (self->private_impl.f_seen_trns || (self->private_impl.f_color_type > 3u) || ((self->private_impl.f_color_type == 3u) && ! self->private_impl.f_seen_plte)) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_png__decoder__decode_trns(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_impl.f_seen_trns = true; + } + } + if (self->private_impl.f_metadata_fourcc == 0u) { + self->private_data.s_decode_other_chunk[0].scratch = self->private_impl.f_chunk_length; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (self->private_data.s_decode_other_chunk[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_decode_other_chunk[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_decode_other_chunk[0].scratch; + } + + goto ok; + ok: + self->private_impl.p_decode_other_chunk[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_other_chunk[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_actl + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_actl( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_actl[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_chunk_length != 8u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } else if (self->private_impl.f_interlace_pass > 0u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_actl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + self->private_impl.f_num_animation_frames_value = t_0; + } + if (self->private_impl.f_num_animation_frames_value == 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_actl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + self->private_impl.f_num_animation_loops_value = t_1; + } + + goto ok; + ok: + self->private_impl.p_decode_actl[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_actl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_chrm + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_chrm( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint64_t v_u = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_chrm[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_chunk_length != 32u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + self->private_impl.f_metadata_flavor = 5u; + self->private_impl.f_metadata_fourcc = 1128813133u; + self->private_impl.f_metadata_x = 0u; + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint64_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_u = t_0; + } + self->private_impl.f_metadata_x |= ((16777215u & v_u) << 0u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint64_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_u = t_1; + } + self->private_impl.f_metadata_x |= ((16777215u & v_u) << 24u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint64_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); + if (num_bits_2 == 24) { + t_2 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)); + } + } + v_u = t_2; + } + self->private_impl.f_metadata_x |= ((uint64_t)((16777215u & v_u) << 48u)); + self->private_impl.f_metadata_y |= ((16777215u & v_u) >> 16u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint64_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); + if (num_bits_3 == 24) { + t_3 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)); + } + } + v_u = t_3; + } + self->private_impl.f_metadata_y |= ((16777215u & v_u) << 8u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + uint64_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); + if (num_bits_4 == 24) { + t_4 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)); + } + } + v_u = t_4; + } + self->private_impl.f_metadata_y |= ((16777215u & v_u) << 32u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + uint64_t t_5; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); + if (num_bits_5 == 24) { + t_5 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_5 += 8u; + *scratch |= ((uint64_t)(num_bits_5)); + } + } + v_u = t_5; + } + self->private_impl.f_metadata_y |= ((uint64_t)((16777215u & v_u) << 56u)); + self->private_impl.f_metadata_z |= ((16777215u & v_u) >> 8u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + uint64_t t_6; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6); + if (num_bits_6 == 24) { + t_6 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_6 += 8u; + *scratch |= ((uint64_t)(num_bits_6)); + } + } + v_u = t_6; + } + self->private_impl.f_metadata_z |= ((16777215u & v_u) << 16u); + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + uint64_t t_7; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_chrm[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; + uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7); + if (num_bits_7 == 24) { + t_7 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_7 += 8u; + *scratch |= ((uint64_t)(num_bits_7)); + } + } + v_u = t_7; + } + self->private_impl.f_metadata_z |= ((16777215u & v_u) << 40u); + + goto ok; + ok: + self->private_impl.p_decode_chrm[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_chrm[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_exif + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_exif( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + if (self->private_impl.f_chunk_length < 4u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_metadata_flavor = 3u; + self->private_impl.f_metadata_fourcc = 1163413830u; + self->private_impl.f_metadata_x = 0u; + self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length))); + self->private_impl.f_chunk_length = 0u; + + goto ok; + ok: + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_fctl + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_fctl( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_x0 = 0; + uint32_t v_y0 = 0; + uint32_t v_x1 = 0; + uint32_t v_y1 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_fctl[0]; + if (coro_susp_point) { + v_x0 = self->private_data.s_decode_fctl[0].v_x0; + v_x1 = self->private_data.s_decode_fctl[0].v_x1; + v_y1 = self->private_data.s_decode_fctl[0].v_y1; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_chunk_length != 26u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_x0 = t_0; + } + if (v_x0 != self->private_impl.f_next_animation_seq_num) { + status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); + goto exit; + } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); + goto exit; + } + self->private_impl.f_next_animation_seq_num += 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_x1 = t_1; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)); + } + } + v_y1 = t_2; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)); + } + } + v_x0 = t_3; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); + if (num_bits_4 == 24) { + t_4 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)); + } + } + v_y0 = t_4; + } + v_x1 += v_x0; + v_y1 += v_y0; + if ((v_x0 >= v_x1) || + (v_x0 > self->private_impl.f_width) || + (v_x1 > self->private_impl.f_width) || + (v_y0 >= v_y1) || + (v_y0 > self->private_impl.f_height) || + (v_y1 > self->private_impl.f_height)) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_frame_rect_x0 = v_x0; + self->private_impl.f_frame_rect_y0 = v_y0; + self->private_impl.f_frame_rect_x1 = v_x1; + self->private_impl.f_frame_rect_y1 = v_y1; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + uint32_t t_5; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); + if (num_bits_5 == 8) { + t_5 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_5 += 8u; + *scratch |= ((uint64_t)(num_bits_5)); + } + } + v_x0 = t_5; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + uint32_t t_6; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_fctl[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; + uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6); + if (num_bits_6 == 8) { + t_6 = ((uint32_t)(*scratch >> 48)); + break; + } + num_bits_6 += 8u; + *scratch |= ((uint64_t)(num_bits_6)); + } + } + v_x1 = t_6; + } + if (v_x1 <= 0u) { + self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000u); + } else { + self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000u) / ((uint64_t)(v_x1))); + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_7 = *iop_a_src++; + v_x0 = t_7; + } + if (v_x0 == 0u) { + self->private_impl.f_frame_disposal = 0u; + } else if (v_x0 == 1u) { + self->private_impl.f_frame_disposal = 1u; + } else if (v_x0 == 2u) { + self->private_impl.f_frame_disposal = 2u; + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint32_t t_8 = *iop_a_src++; + v_x0 = t_8; + } + if (v_x0 == 0u) { + self->private_impl.f_frame_overwrite_instead_of_blend = true; + } else if (v_x0 == 1u) { + self->private_impl.f_frame_overwrite_instead_of_blend = false; + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if (self->private_impl.f_num_decoded_frame_configs_value == 0u) { + self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0; + self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0; + self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1; + self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1; + self->private_impl.f_first_duration = self->private_impl.f_frame_duration; + self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal; + self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend; + } + + goto ok; + ok: + self->private_impl.p_decode_fctl[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_fctl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_fctl[0].v_x0 = v_x0; + self->private_data.s_decode_fctl[0].v_x1 = v_x1; + self->private_data.s_decode_fctl[0].v_y1 = v_y1; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_gama + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_gama( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_gama[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_chunk_length != 4u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + self->private_impl.f_metadata_flavor = 5u; + self->private_impl.f_metadata_fourcc = 1195461953u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint64_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); + iop_a_src += 4; + } else { + self->private_data.s_decode_gama[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_gama[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint64_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + self->private_impl.f_metadata_x = t_0; + } + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + + goto ok; + ok: + self->private_impl.p_decode_gama[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_gama[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_iccp + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_iccp( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_iccp[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + if (self->private_impl.f_chunk_length <= 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c == 0u) { + break; + } + } + if (self->private_impl.f_chunk_length <= 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + if (v_c != 0u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); + goto exit; + } + self->private_impl.f_metadata_is_zlib_compressed = true; + self->private_impl.f_metadata_flavor = 4u; + self->private_impl.f_metadata_fourcc = 1229144912u; + self->private_impl.f_metadata_x = 0u; + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + + goto ok; + ok: + self->private_impl.p_decode_iccp[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_iccp[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_plte + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_plte( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_num_entries = 0; + uint32_t v_i = 0; + uint32_t v_argb = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_plte[0]; + if (coro_susp_point) { + v_num_entries = self->private_data.s_decode_plte[0].v_num_entries; + v_i = self->private_data.s_decode_plte[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_chunk_length > 768u) || ((self->private_impl.f_chunk_length % 3u) != 0u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3u); + self->private_impl.f_chunk_length = 0u; + while (v_i < v_num_entries) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { + t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); + iop_a_src += 3; + } else { + self->private_data.s_decode_plte[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_plte[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 16) { + t_0 = ((uint32_t)(*scratch >> 40)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_argb = t_0; + } + v_argb |= 4278190080u; + self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u))); + self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u))); + self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u))); + self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u))); + v_i += 1u; + } + while (v_i < 256u) { + self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u; + self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u; + v_i += 1u; + } + + goto ok; + ok: + self->private_impl.p_decode_plte[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_plte[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_plte[0].v_num_entries = v_num_entries; + self->private_data.s_decode_plte[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_srgb + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_srgb( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_srgb[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_chunk_length != 1u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + self->private_impl.f_metadata_flavor = 5u; + self->private_impl.f_metadata_fourcc = 1397901122u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t t_0 = *iop_a_src++; + self->private_impl.f_metadata_x = t_0; + } + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + + goto ok; + ok: + self->private_impl.p_decode_srgb[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_srgb[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_trns + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_trns( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_i = 0; + uint32_t v_n = 0; + uint64_t v_u = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_trns[0]; + if (coro_susp_point) { + v_i = self->private_data.s_decode_trns[0].v_i; + v_n = self->private_data.s_decode_trns[0].v_n; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_color_type == 0u) { + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + if (self->private_impl.f_depth <= 8u) { + self->private_impl.f_dst_pixfmt = 2164295816u; + self->private_impl.f_src_pixfmt = 2164295816u; + } else { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + } + if (self->private_impl.f_chunk_length != 2u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint64_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_decode_trns[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 8) { + t_0 = ((uint64_t)(*scratch >> 48)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_u = t_0; + } + if (self->private_impl.f_depth <= 1u) { + self->private_impl.f_remap_transparency = (((v_u & 1u) * 16777215u) | 4278190080u); + } else if (self->private_impl.f_depth <= 2u) { + self->private_impl.f_remap_transparency = (((v_u & 3u) * 5592405u) | 4278190080u); + } else if (self->private_impl.f_depth <= 4u) { + self->private_impl.f_remap_transparency = (((v_u & 15u) * 1118481u) | 4278190080u); + } else if (self->private_impl.f_depth <= 8u) { + self->private_impl.f_remap_transparency = (((v_u & 255u) * 65793u) | 4278190080u); + } else { + self->private_impl.f_remap_transparency = ((v_u * 4295032833u) | 18446462598732840960u); + } + } else if (self->private_impl.f_color_type == 2u) { + self->private_impl.choosy_filter_and_swizzle = ( + &wuffs_png__decoder__filter_and_swizzle_tricky); + if (self->private_impl.f_depth <= 8u) { + self->private_impl.f_dst_pixfmt = 2164295816u; + self->private_impl.f_src_pixfmt = 2164295816u; + } else { + self->private_impl.f_dst_pixfmt = 2164308923u; + self->private_impl.f_src_pixfmt = 2164308923u; + } + if (self->private_impl.f_chunk_length != 6u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length = 0u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint64_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) { + t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src))); + iop_a_src += 6; + } else { + self->private_data.s_decode_trns[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 40) { + t_1 = ((uint64_t)(*scratch >> 16)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_u = t_1; + } + if (self->private_impl.f_depth <= 8u) { + self->private_impl.f_remap_transparency = ((255u & (v_u >> 0u)) | + (65280u & (v_u >> 8u)) | + (16711680u & (v_u >> 16u)) | + 4278190080u); + } else { + self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u); + } + } else if (self->private_impl.f_color_type == 3u) { + self->private_impl.f_dst_pixfmt = 2164523016u; + self->private_impl.f_src_pixfmt = 2164523016u; + if (self->private_impl.f_chunk_length > 256u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + v_n = ((uint32_t)(self->private_impl.f_chunk_length)); + self->private_impl.f_chunk_length = 0u; + while (v_i < v_n) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + self->private_data.f_src_palette[((4u * v_i) + 3u)] = t_2; + } + v_i += 1u; + } + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + + goto ok; + ok: + self->private_impl.p_decode_trns[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_trns[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_decode_trns[0].v_i = v_i; + self->private_data.s_decode_trns[0].v_n = v_n; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_frame_config( + wuffs_png__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_png__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func png.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_frame_config( + wuffs_png__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_checksum_have = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_call_sequence & 16u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + status = wuffs_png__decoder__skip_frame(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (self->private_impl.f_metadata_fourcc != 0u) { + self->private_impl.f_call_sequence = 48u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + if (self->private_impl.f_num_decoded_frame_configs_value == 0u) { + self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0; + self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0; + self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1; + self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1; + self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position; + self->private_impl.f_frame_duration = self->private_impl.f_first_duration; + self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal; + self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend; + } else { + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_frame_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + self->private_impl.f_chunk_length = t_0; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_frame_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)) << 56; + } + } + self->private_impl.f_chunk_type = t_1; + } + if (self->private_impl.f_chunk_type == 1145980233u) { + if (self->private_impl.f_chunk_length != 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_frame_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)) << 56; + } + } + v_checksum_have = t_2; + } + if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_checksum); + goto exit; + } + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else if (self->private_impl.f_chunk_type == 1413571686u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } else if (self->private_impl.f_chunk_type == 1280598886u) { + self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8u)); + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + status = wuffs_png__decoder__decode_fctl(self, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + self->private_data.s_do_decode_frame_config[0].scratch = 4u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch; + break; + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + status = wuffs_png__decoder__decode_other_chunk(self, a_src, true); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + if (self->private_impl.f_metadata_fourcc != 0u) { + self->private_impl.f_call_sequence = 48u; + status = wuffs_base__make_status(wuffs_base__note__metadata_reported); + goto ok; + } + self->private_data.s_do_decode_frame_config[0].scratch = 4u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch; + self->private_impl.f_chunk_length = 0u; + } + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + self->private_impl.f_frame_rect_x0, + self->private_impl.f_frame_rect_y0, + self->private_impl.f_frame_rect_x1, + self->private_impl.f_frame_rect_y1), + ((wuffs_base__flicks)(self->private_impl.f_frame_duration)), + ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)), + self->private_impl.f_frame_config_io_position, + self->private_impl.f_frame_disposal, + ((self->private_impl.f_color_type <= 3u) && ! self->private_impl.f_seen_trns), + self->private_impl.f_frame_overwrite_instead_of_blend, + 0u); + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u); + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.skip_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__skip_frame( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_seq_num = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_skip_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_chunk_type_array[0u] = 0u; + self->private_impl.f_chunk_type_array[1u] = 0u; + self->private_impl.f_chunk_type_array[2u] = 0u; + self->private_impl.f_chunk_type_array[3u] = 0u; + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + continue; + } + self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u))); + if (self->private_impl.f_chunk_type == 1413563465u) { + if (self->private_impl.f_chunk_type_array[0u] == 102u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_type_array[0u] = 73u; + self->private_impl.f_chunk_type_array[1u] = 68u; + self->private_impl.f_chunk_type_array[2u] = 65u; + self->private_impl.f_chunk_type_array[3u] = 84u; + } else if (self->private_impl.f_chunk_type == 1413571686u) { + if (self->private_impl.f_chunk_type_array[0u] == 73u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_type_array[0u] = 102u; + self->private_impl.f_chunk_type_array[1u] = 100u; + self->private_impl.f_chunk_type_array[2u] = 65u; + self->private_impl.f_chunk_type_array[3u] = 84u; + if (self->private_impl.f_chunk_length < 4u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 4u; + iop_a_src += 8u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_skip_frame[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_skip_frame[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_seq_num = t_0; + } + if (v_seq_num != self->private_impl.f_next_animation_seq_num) { + status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); + goto exit; + } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); + goto exit; + } + self->private_impl.f_next_animation_seq_num += 1u; + self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4u); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_skip_frame[0].scratch; + self->private_impl.f_chunk_length = 0u; + continue; + } else if (self->private_impl.f_chunk_type_array[0u] != 0u) { + break; + } else if (self->private_impl.f_chunk_type == 1280598886u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_skip_frame[0].scratch; + self->private_impl.f_chunk_length = 0u; + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + self->private_impl.f_call_sequence = 32u; + + ok: + self->private_impl.p_skip_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__decode_frame( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_png__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func png.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_decode_frame( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_seq_num = 0; + wuffs_base__status v_status = wuffs_base__make_status(NULL); + uint32_t v_pass_width = 0; + uint32_t v_pass_height = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_call_sequence & 16u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } else if (self->private_impl.f_call_sequence >= 96u) { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else if (self->private_impl.f_call_sequence != 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } + while (true) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + continue; + } + self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u))); + if (self->private_impl.f_chunk_type == 1413563465u) { + self->private_impl.f_chunk_type_array[0u] = 73u; + self->private_impl.f_chunk_type_array[1u] = 68u; + self->private_impl.f_chunk_type_array[2u] = 65u; + self->private_impl.f_chunk_type_array[3u] = 84u; + iop_a_src += 8u; + if ( ! self->private_impl.f_ignore_checksum) { + wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, + sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); + } + break; + } else if (self->private_impl.f_chunk_type == 1413571686u) { + self->private_impl.f_chunk_type_array[0u] = 102u; + self->private_impl.f_chunk_type_array[1u] = 100u; + self->private_impl.f_chunk_type_array[2u] = 65u; + self->private_impl.f_chunk_type_array[3u] = 84u; + if (self->private_impl.f_chunk_length < 4u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 4u; + iop_a_src += 8u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_0; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_frame[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch; + uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); + if (num_bits_0 == 24) { + t_0 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_0 += 8u; + *scratch |= ((uint64_t)(num_bits_0)); + } + } + v_seq_num = t_0; + } + if (v_seq_num != self->private_impl.f_next_animation_seq_num) { + status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); + goto exit; + } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); + goto exit; + } + self->private_impl.f_next_animation_seq_num += 1u; + break; + } else if (self->private_impl.f_chunk_type == 1280598886u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_data.s_do_decode_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame[0].scratch; + self->private_impl.f_chunk_length = 0u; + } + if (self->private_impl.f_zlib_is_dirty) { + wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib, + sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + if (self->private_impl.f_ignore_checksum) { + wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u); + } + } + self->private_impl.f_zlib_is_dirty = true; + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), + wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), + wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + self->private_impl.f_workbuf_hist_pos_base = 0u; + while (true) { + if (self->private_impl.f_chunk_type_array[0u] == 73u) { + v_pass_width = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1u])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u])); + v_pass_height = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4u])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u])); + } else { + v_pass_width = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0))); + v_pass_height = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0))); + } + if ((v_pass_width > 0u) && (v_pass_height > 0u)) { + self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width); + self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1u + self->private_impl.f_pass_bytes_per_row)); + while (true) { + { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf); + v_status = t_1; + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if (wuffs_base__status__is_ok(&v_status)) { + break; + } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) { + if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) { + wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi)); + } + if (v_status.repr == wuffs_base__suspension__short_read) { + status = wuffs_base__make_status(wuffs_png__error__truncated_input); + goto exit; + } + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + } + v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length; + } + if ((self->private_impl.f_interlace_pass == 0u) || (self->private_impl.f_interlace_pass >= 7u)) { + break; + } +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_interlace_pass += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } + wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u); + self->private_impl.f_call_sequence = 32u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.decode_pass + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__decode_pass( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_src, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_w = &u_w; + uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint64_t v_w_mark = 0; + uint64_t v_r_mark = 0; + wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL); + uint32_t v_checksum_have = 0; + uint32_t v_checksum_want = 0; + uint32_t v_seq_num = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_decode_pass[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + self->private_impl.f_workbuf_wi = 0u; + while (true) { + if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length); + goto exit; + } + { + wuffs_base__io_buffer* o_0_v_w = v_w; + uint8_t *o_0_iop_v_w = iop_v_w; + uint8_t *o_0_io0_v_w = io0_v_w; + uint8_t *o_0_io1_v_w = io1_v_w; + uint8_t *o_0_io2_v_w = io2_v_w; + v_w = wuffs_base__io_writer__set( + &u_w, + &iop_v_w, + &io0_v_w, + &io1_v_w, + &io2_v_w, + wuffs_base__slice_u8__subslice_ij(a_workbuf, + self->private_impl.f_workbuf_wi, + self->private_impl.f_pass_workbuf_length), + ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi))); + { + const bool o_1_closed_a_src = a_src->meta.closed; + const uint8_t *o_1_io2_a_src = io2_a_src; + wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, + ((uint64_t)(self->private_impl.f_chunk_length))); + if (a_src) { + size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); + a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); + a_src->meta.wi = n; + } + v_w_mark = ((uint64_t)(iop_v_w - io0_v_w)); + v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr)); + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8()); + v_zlib_status = t_0; + iop_v_w = u_w.data.ptr + u_w.meta.wi; + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + if ( ! self->private_impl.f_ignore_checksum) { + wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); + } + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)))))); + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)))); + io2_a_src = o_1_io2_a_src; + if (a_src) { + a_src->meta.closed = o_1_closed_a_src; + a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); + } + } + v_w = o_0_v_w; + iop_v_w = o_0_iop_v_w; + io0_v_w = o_0_io0_v_w; + io1_v_w = o_0_io1_v_w; + io2_v_w = o_0_io2_v_w; + } + if (wuffs_base__status__is_ok(&v_zlib_status)) { + if (self->private_impl.f_chunk_length > 0u) { + status = wuffs_base__make_status(wuffs_base__error__too_much_data); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + uint32_t t_1; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_pass[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; + uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); + if (num_bits_1 == 24) { + t_1 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_1 += 8u; + *scratch |= ((uint64_t)(num_bits_1)); + } + } + v_checksum_want = t_1; + } + if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) { + v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8()); + if (v_checksum_have != v_checksum_want) { + status = wuffs_base__make_status(wuffs_png__error__bad_checksum); + goto exit; + } + } + break; + } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) { + if ((1u <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6u)) { + break; + } + status = wuffs_base__make_status(wuffs_base__error__too_much_data); + goto exit; + } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) { + status = v_zlib_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } else if (self->private_impl.f_chunk_length == 0u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + uint32_t t_2; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_pass[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; + uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); + if (num_bits_2 == 24) { + t_2 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_2 += 8u; + *scratch |= ((uint64_t)(num_bits_2)); + } + } + v_checksum_want = t_2; + } + if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) { + v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8()); + if (v_checksum_have != v_checksum_want) { + status = wuffs_base__make_status(wuffs_png__error__bad_checksum); + goto exit; + } + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + uint32_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_pass[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); + if (num_bits_3 == 24) { + t_3 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)); + } + } + self->private_impl.f_chunk_length = t_3; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + uint32_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_pass[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 24) { + t_4 = ((uint32_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + self->private_impl.f_chunk_type = t_4; + } + if (self->private_impl.f_chunk_type_array[0u] == 73u) { + if (self->private_impl.f_chunk_type != 1413563465u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + if ( ! self->private_impl.f_ignore_checksum) { + wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, + sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); + } + } else { + if ((self->private_impl.f_chunk_type != 1413571686u) || (self->private_impl.f_chunk_length < 4u)) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 4u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + uint32_t t_5; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_decode_pass[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; + uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu)); + *scratch >>= 8; + *scratch <<= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); + if (num_bits_5 == 24) { + t_5 = ((uint32_t)(*scratch >> 32)); + break; + } + num_bits_5 += 8u; + *scratch |= ((uint64_t)(num_bits_5)); + } + } + v_seq_num = t_5; + } + if (v_seq_num != self->private_impl.f_next_animation_seq_num) { + status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); + goto exit; + } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); + goto exit; + } + self->private_impl.f_next_animation_seq_num += 1u; + } + continue; + } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0u) { + status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input); + goto exit; + } + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); + } + if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) { + status = wuffs_base__make_status(wuffs_base__error__not_enough_data); + goto exit; + } else if (0u < ((uint64_t)(a_workbuf.len))) { + if (a_workbuf.ptr[0u] == 4u) { + a_workbuf.ptr[0u] = 1u; + } + } + + ok: + self->private_impl.p_decode_pass[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_pass[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_png__decoder__frame_dirty_rect( + const wuffs_png__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + self->private_impl.f_frame_rect_x0, + self->private_impl.f_frame_rect_y0, + self->private_impl.f_frame_rect_x1, + self->private_impl.f_frame_rect_y1); +} + +// -------- func png.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_png__decoder__num_animation_loops( + const wuffs_png__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return self->private_impl.f_num_animation_loops_value; +} + +// -------- func png.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__num_decoded_frame_configs( + const wuffs_png__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)); +} + +// -------- func png.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__num_decoded_frames( + const wuffs_png__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return ((uint64_t)(self->private_impl.f_num_decoded_frames_value)); +} + +// -------- func png.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__restart_frame( + wuffs_png__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0u) && (a_io_position != self->private_impl.f_first_config_io_position))) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + if (self->private_impl.f_interlace_pass >= 1u) { + self->private_impl.f_interlace_pass = 1u; + } + self->private_impl.f_frame_config_io_position = a_io_position; + self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)(a_index)); + self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value; + return wuffs_base__make_status(NULL); +} + +// -------- func png.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_png__decoder__set_report_metadata( + wuffs_png__decoder* self, + uint32_t a_fourcc, + bool a_report) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if (a_fourcc == 1128813133u) { + self->private_impl.f_report_metadata_chrm = a_report; + } else if (a_fourcc == 1163413830u) { + self->private_impl.f_report_metadata_exif = a_report; + } else if (a_fourcc == 1195461953u) { + self->private_impl.f_report_metadata_gama = a_report; + } else if (a_fourcc == 1229144912u) { + self->private_impl.f_report_metadata_iccp = a_report; + } else if (a_fourcc == 1263947808u) { + self->private_impl.f_report_metadata_kvp = a_report; + } else if (a_fourcc == 1397901122u) { + self->private_impl.f_report_metadata_srgb = a_report; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func png.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_png__decoder__tell_me_more( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_png__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_tell_me_more[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func png.decoder.do_tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__do_tell_me_more( + wuffs_png__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint16_t v_c2 = 0; + wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer(); + wuffs_base__io_buffer* v_w = &u_w; + uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint64_t v_num_written = 0; + uint64_t v_w_mark = 0; + uint64_t v_r_mark = 0; + wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL); + + uint8_t* iop_a_dst = NULL; + uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_dst && a_dst->data.ptr) { + io0_a_dst = a_dst->data.ptr; + io1_a_dst = io0_a_dst + a_dst->meta.wi; + iop_a_dst = io1_a_dst; + io2_a_dst = io0_a_dst + a_dst->data.len; + if (a_dst->meta.closed) { + io2_a_dst = iop_a_dst; + } + } + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0]; + if (coro_susp_point) { + v_zlib_status = self->private_data.s_do_tell_me_more[0].v_zlib_status; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if ((self->private_impl.f_call_sequence & 16u) == 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + if (self->private_impl.f_metadata_fourcc == 0u) { + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + } + do { + if (self->private_impl.f_metadata_flavor == 3u) { + while (true) { + if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) { + status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); + goto exit; + } else if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + self->private_impl.f_metadata_flavor, + self->private_impl.f_metadata_fourcc, + self->private_impl.f_metadata_x, + self->private_impl.f_metadata_y, + self->private_impl.f_metadata_z); + } + if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) { + goto label__goto_done__break; + } + self->private_impl.f_metadata_y = self->private_impl.f_metadata_z; + status = wuffs_base__make_status(wuffs_base__suspension__even_more_information); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + } + if (self->private_impl.f_metadata_is_zlib_compressed) { + if (self->private_impl.f_zlib_is_dirty) { + wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib, + sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); + if (self->private_impl.f_ignore_checksum) { + wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u); + } + } + self->private_impl.f_zlib_is_dirty = true; + self->private_impl.f_ztxt_hist_pos = 0u; + } + label__loop__continue:; + while (true) { + if (a_minfo != NULL) { + wuffs_base__more_information__set(a_minfo, + self->private_impl.f_metadata_flavor, + self->private_impl.f_metadata_fourcc, + self->private_impl.f_metadata_x, + self->private_impl.f_metadata_y, + self->private_impl.f_metadata_z); + } + if (self->private_impl.f_metadata_flavor != 4u) { + break; + } + if (self->private_impl.f_metadata_is_zlib_compressed) { + if (self->private_impl.f_chunk_type == 1346585449u) { + { + const bool o_0_closed_a_src = a_src->meta.closed; + const uint8_t *o_0_io2_a_src = io2_a_src; + wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, + ((uint64_t)(self->private_impl.f_chunk_length))); + if (a_src) { + size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); + a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); + a_src->meta.wi = n; + } + v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8()); + v_zlib_status = t_0; + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)))))); + io2_a_src = o_0_io2_a_src; + if (a_src) { + a_src->meta.closed = o_0_closed_a_src; + a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); + } + } + if (wuffs_base__status__is_ok(&v_zlib_status)) { + self->private_impl.f_metadata_is_zlib_compressed = false; + break; + } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { + status = v_zlib_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + status = v_zlib_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + } else if (self->private_impl.f_chunk_type == 1951945833u) { + { + const bool o_1_closed_a_src = a_src->meta.closed; + const uint8_t *o_1_io2_a_src = io2_a_src; + wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, + ((uint64_t)(self->private_impl.f_chunk_length))); + if (a_src) { + size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); + a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); + a_src->meta.wi = n; + } + v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + if (a_dst) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8()); + v_zlib_status = t_1; + if (a_dst) { + iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; + } + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)))))); + io2_a_src = o_1_io2_a_src; + if (a_src) { + a_src->meta.closed = o_1_closed_a_src; + a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); + } + } + if (wuffs_base__status__is_ok(&v_zlib_status)) { + self->private_impl.f_metadata_is_zlib_compressed = false; + break; + } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { + status = v_zlib_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + status = v_zlib_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + } else if (self->private_impl.f_chunk_type == 1951945850u) { + if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) { + { + wuffs_base__io_buffer* o_2_v_w = v_w; + uint8_t *o_2_iop_v_w = iop_v_w; + uint8_t *o_2_io0_v_w = io0_v_w; + uint8_t *o_2_io1_v_w = io1_v_w; + uint8_t *o_2_io2_v_w = io2_v_w; + v_w = wuffs_base__io_writer__set( + &u_w, + &iop_v_w, + &io0_v_w, + &io1_v_w, + &io2_v_w, + wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), + self->private_impl.f_ztxt_hist_pos); + { + const bool o_3_closed_a_src = a_src->meta.closed; + const uint8_t *o_3_io2_a_src = io2_a_src; + wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, + ((uint64_t)(self->private_impl.f_chunk_length))); + if (a_src) { + size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); + a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); + a_src->meta.wi = n; + } + v_w_mark = ((uint64_t)(iop_v_w - io0_v_w)); + v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); + { + u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr)); + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8()); + v_zlib_status = t_2; + iop_v_w = u_w.data.ptr + u_w.meta.wi; + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + } + wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)))))); + v_num_written = wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))); + io2_a_src = o_3_io2_a_src; + if (a_src) { + a_src->meta.closed = o_3_closed_a_src; + a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); + } + } + v_w = o_2_v_w; + iop_v_w = o_2_iop_v_w; + io0_v_w = o_2_io0_v_w; + io1_v_w = o_2_io1_v_w; + io2_v_w = o_2_io2_v_w; + } + if (v_num_written > 1024u) { + status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o); + goto exit; + } + self->private_impl.f_ztxt_ri = 0u; + self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written)); + wuffs_base__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written); + } + while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) { + v_c2 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]]; + if (v_c2 == 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1); + goto exit; + } else if (v_c2 <= 127u) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + goto label__loop__continue; + } + self->private_impl.f_ztxt_ri += 1u; + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1); + } else { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + goto label__loop__continue; + } + self->private_impl.f_ztxt_ri += 1u; + (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2); + } + } + if (wuffs_base__status__is_ok(&v_zlib_status)) { + self->private_impl.f_metadata_is_zlib_compressed = false; + break; + } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { + status = v_zlib_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) { + status = v_zlib_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + } + } else { + status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type); + goto exit; + } + } else if ((self->private_impl.f_chunk_type == 1951945833u) && (self->private_impl.f_metadata_fourcc == 1263947862u)) { + while (true) { + if (self->private_impl.f_chunk_length <= 0u) { + goto label__loop__break; + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); + goto label__loop__continue; + } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + goto label__loop__continue; + } + self->private_impl.f_chunk_length -= 1u; + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c), iop_a_dst += 1); + } + } else { + while (true) { + if (self->private_impl.f_chunk_length <= 0u) { + if (self->private_impl.f_metadata_fourcc == 1263947851u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + goto label__loop__break; + } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); + goto label__loop__continue; + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + if (v_c == 0u) { + self->private_impl.f_chunk_length -= 1u; + iop_a_src += 1u; + goto label__loop__break; + } + v_c2 = WUFFS_PNG__LATIN_1[v_c]; + if (v_c2 == 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1); + goto exit; + } else if (v_c2 <= 127u) { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); + goto label__loop__continue; + } + self->private_impl.f_chunk_length -= 1u; + iop_a_src += 1u; + (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1); + } else { + if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_write); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); + goto label__loop__continue; + } + self->private_impl.f_chunk_length -= 1u; + iop_a_src += 1u; + (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2); + } + } + } + } + label__loop__break:; + if (self->private_impl.f_metadata_fourcc == 1263947851u) { + self->private_impl.f_metadata_fourcc = 1263947862u; + if (self->private_impl.f_chunk_type == 1951945833u) { + if (self->private_impl.f_chunk_length <= 1u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 2u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_3 = *iop_a_src++; + v_c = t_3; + } + if (v_c == 0u) { + self->private_impl.f_metadata_is_zlib_compressed = false; + } else if (v_c == 1u) { + self->private_impl.f_metadata_is_zlib_compressed = true; + } else { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_4 = *iop_a_src++; + v_c = t_4; + } + if ((v_c != 0u) && self->private_impl.f_metadata_is_zlib_compressed) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); + goto exit; + } + self->private_impl.f_metadata_fourcc -= 2u; + while (self->private_impl.f_metadata_fourcc != 1263947862u) { + self->private_impl.f_metadata_fourcc += 1u; + while (true) { + if (self->private_impl.f_chunk_length <= 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + v_c = t_5; + } + if (v_c == 0u) { + break; + } + } + } + } else if (self->private_impl.f_chunk_type == 1951945850u) { + if (self->private_impl.f_chunk_length <= 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_impl.f_chunk_length -= 1u; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_6 = *iop_a_src++; + v_c = t_6; + } + if (v_c != 0u) { + status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); + goto exit; + } + self->private_impl.f_metadata_is_zlib_compressed = true; + } + self->private_impl.f_call_sequence &= 239u; + status = wuffs_base__make_status(NULL); + goto ok; + } + } while (0); + label__goto_done__break:; + if (self->private_impl.f_chunk_length != 0u) { + status = wuffs_base__make_status(wuffs_png__error__bad_chunk); + goto exit; + } + self->private_data.s_do_tell_me_more[0].scratch = 4u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + if (self->private_data.s_do_tell_me_more[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_tell_me_more[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_tell_me_more[0].scratch; + self->private_impl.f_metadata_flavor = 0u; + self->private_impl.f_metadata_fourcc = 0u; + self->private_impl.f_metadata_x = 0u; + self->private_impl.f_metadata_y = 0u; + self->private_impl.f_metadata_z = 0u; + self->private_impl.f_call_sequence &= 239u; + status = wuffs_base__make_status(NULL); + goto ok; + + ok: + self->private_impl.p_do_tell_me_more[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_tell_me_more[0].v_zlib_status = v_zlib_status; + + goto exit; + exit: + if (a_dst && a_dst->data.ptr) { + a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); + } + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func png.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_png__decoder__history_retain_length( + const wuffs_png__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func png.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_png__decoder__workbuf_len( + const wuffs_png__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length); +} + +// -------- func png.decoder.filter_and_swizzle + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf) { + return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf); +} + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle__choosy_default( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint64_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row0 = 0; + uint64_t v_dst_bytes_per_row1 = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + uint32_t v_y = 0; + wuffs_base__slice_u8 v_dst = {0}; + uint8_t v_filter = 0; + wuffs_base__slice_u8 v_curr_row = {0}; + wuffs_base__slice_u8 v_prev_row = {0}; + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u))); + v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel); + v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) { + v_tab = wuffs_base__table_u8__subtable_ij(v_tab, + 0u, + 0u, + v_dst_bytes_per_row1, + ((uint64_t)(v_tab.height))); + } + if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) { + v_tab = wuffs_base__table_u8__subtable_ij(v_tab, + v_dst_bytes_per_row0, + 0u, + ((uint64_t)(v_tab.width)), + ((uint64_t)(v_tab.height))); + } else { + v_tab = wuffs_base__table_u8__subtable_ij(v_tab, + 0u, + 0u, + 0u, + 0u); + } + v_y = self->private_impl.f_frame_rect_y0; + while (v_y < self->private_impl.f_frame_rect_y1) { + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); + if (1u > ((uint64_t)(a_workbuf.len))) { + return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); + } + v_filter = a_workbuf.ptr[0u]; + a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u); + if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) { + return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); + } + v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row); + a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row); + if (v_filter == 0u) { + } else if (v_filter == 1u) { + wuffs_png__decoder__filter_1(self, v_curr_row); + } else if (v_filter == 2u) { + wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row); + } else if (v_filter == 3u) { + wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row); + } else if (v_filter == 4u) { + wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row); + } else { + return wuffs_base__make_status(wuffs_png__error__bad_filter); + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row); + v_prev_row = v_curr_row; + v_y += 1u; + } + return wuffs_base__make_status(NULL); +} + +// -------- func png.decoder.filter_and_swizzle_tricky + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_png__decoder__filter_and_swizzle_tricky( + wuffs_png__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__slice_u8 a_workbuf) { + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint64_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_bytes_per_row1 = 0; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__table_u8 v_tab = {0}; + uint64_t v_src_bytes_per_pixel = 0; + uint32_t v_x = 0; + uint32_t v_y = 0; + uint64_t v_i = 0; + wuffs_base__slice_u8 v_dst = {0}; + uint8_t v_filter = 0; + wuffs_base__slice_u8 v_s = {0}; + wuffs_base__slice_u8 v_curr_row = {0}; + wuffs_base__slice_u8 v_prev_row = {0}; + uint8_t v_bits_unpacked[8] = {0}; + uint8_t v_bits_packed = 0; + uint8_t v_packs_remaining = 0; + uint8_t v_multiplier = 0; + uint8_t v_shift = 0; + + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + return wuffs_base__make_status(wuffs_base__error__unsupported_option); + } + v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u))); + v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + v_src_bytes_per_pixel = 1u; + if (self->private_impl.f_depth >= 8u) { + v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)((self->private_impl.f_depth >> 3u)))); + } + if (self->private_impl.f_chunk_type_array[0u] == 73u) { + v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5u])); + } else { + v_y = self->private_impl.f_frame_rect_y0; + } + while (v_y < self->private_impl.f_frame_rect_y1) { + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); + if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1); + } + if (1u > ((uint64_t)(a_workbuf.len))) { + return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); + } + v_filter = a_workbuf.ptr[0u]; + a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u); + if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) { + return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); + } + v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row); + a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row); + if (v_filter == 0u) { + } else if (v_filter == 1u) { + wuffs_png__decoder__filter_1(self, v_curr_row); + } else if (v_filter == 2u) { + wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row); + } else if (v_filter == 3u) { + wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row); + } else if (v_filter == 4u) { + wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row); + } else { + return wuffs_base__make_status(wuffs_png__error__bad_filter); + } + v_s = v_curr_row; + if (self->private_impl.f_chunk_type_array[0u] == 73u) { + v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2u])); + } else { + v_x = self->private_impl.f_frame_rect_x0; + } + if (self->private_impl.f_depth == 8u) { + while (v_x < self->private_impl.f_frame_rect_x1) { + v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); + if (v_i <= ((uint64_t)(v_dst.len))) { + if (self->private_impl.f_color_type == 4u) { + if (2u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[0u]; + v_bits_unpacked[1u] = v_s.ptr[0u]; + v_bits_unpacked[2u] = v_s.ptr[0u]; + v_bits_unpacked[3u] = v_s.ptr[1u]; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u); + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); + } + } else if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) { + if (self->private_impl.f_color_type == 0u) { + if (1u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[0u]; + v_bits_unpacked[1u] = v_s.ptr[0u]; + v_bits_unpacked[2u] = v_s.ptr[0u]; + v_bits_unpacked[3u] = 255u; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u); + if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) | + (((uint32_t)(v_bits_unpacked[1u])) << 8u) | + (((uint32_t)(v_bits_unpacked[2u])) << 16u) | + (((uint32_t)(v_bits_unpacked[3u])) << 24u))) { + v_bits_unpacked[0u] = 0u; + v_bits_unpacked[1u] = 0u; + v_bits_unpacked[2u] = 0u; + v_bits_unpacked[3u] = 0u; + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); + } + } else { + if (3u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[2u]; + v_bits_unpacked[1u] = v_s.ptr[1u]; + v_bits_unpacked[2u] = v_s.ptr[0u]; + v_bits_unpacked[3u] = 255u; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 3u); + if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) | + (((uint32_t)(v_bits_unpacked[1u])) << 8u) | + (((uint32_t)(v_bits_unpacked[2u])) << 16u) | + (((uint32_t)(v_bits_unpacked[3u])) << 24u))) { + v_bits_unpacked[0u] = 0u; + v_bits_unpacked[1u] = 0u; + v_bits_unpacked[2u] = 0u; + v_bits_unpacked[3u] = 0u; + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); + } + } + } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) { + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel)); + v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel); + } + } + v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]); + } + } else if (self->private_impl.f_depth < 8u) { + v_multiplier = 1u; + if (self->private_impl.f_color_type == 0u) { + v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth]; + } + v_shift = ((8u - self->private_impl.f_depth) & 7u); + v_packs_remaining = 0u; + while (v_x < self->private_impl.f_frame_rect_x1) { + v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); + if (v_i <= ((uint64_t)(v_dst.len))) { + if ((v_packs_remaining == 0u) && (1u <= ((uint64_t)(v_s.len)))) { + v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth]; + v_bits_packed = v_s.ptr[0u]; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u); + } + v_bits_unpacked[0u] = ((uint8_t)((v_bits_packed >> v_shift) * v_multiplier)); + v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth)); + v_packs_remaining = ((uint8_t)(v_packs_remaining - 1u)); + if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) { + v_bits_unpacked[1u] = v_bits_unpacked[0u]; + v_bits_unpacked[2u] = v_bits_unpacked[0u]; + v_bits_unpacked[3u] = 255u; + if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) | + (((uint32_t)(v_bits_unpacked[1u])) << 8u) | + (((uint32_t)(v_bits_unpacked[2u])) << 16u) | + (((uint32_t)(v_bits_unpacked[3u])) << 24u))) { + v_bits_unpacked[0u] = 0u; + v_bits_unpacked[1u] = 0u; + v_bits_unpacked[2u] = 0u; + v_bits_unpacked[3u] = 0u; + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); + } else { + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1)); + } + } + v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]); + } + } else { + while (v_x < self->private_impl.f_frame_rect_x1) { + v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); + if (v_i <= ((uint64_t)(v_dst.len))) { + if (self->private_impl.f_color_type == 0u) { + if (2u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[1u]; + v_bits_unpacked[1u] = v_s.ptr[0u]; + v_bits_unpacked[2u] = v_s.ptr[1u]; + v_bits_unpacked[3u] = v_s.ptr[0u]; + v_bits_unpacked[4u] = v_s.ptr[1u]; + v_bits_unpacked[5u] = v_s.ptr[0u]; + v_bits_unpacked[6u] = 255u; + v_bits_unpacked[7u] = 255u; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u); + if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) | + (((uint64_t)(v_bits_unpacked[1u])) << 8u) | + (((uint64_t)(v_bits_unpacked[2u])) << 16u) | + (((uint64_t)(v_bits_unpacked[3u])) << 24u) | + (((uint64_t)(v_bits_unpacked[4u])) << 32u) | + (((uint64_t)(v_bits_unpacked[5u])) << 40u) | + (((uint64_t)(v_bits_unpacked[6u])) << 48u) | + (((uint64_t)(v_bits_unpacked[7u])) << 56u))) { + v_bits_unpacked[0u] = 0u; + v_bits_unpacked[1u] = 0u; + v_bits_unpacked[2u] = 0u; + v_bits_unpacked[3u] = 0u; + v_bits_unpacked[4u] = 0u; + v_bits_unpacked[5u] = 0u; + v_bits_unpacked[6u] = 0u; + v_bits_unpacked[7u] = 0u; + } + } + } else if (self->private_impl.f_color_type == 2u) { + if (6u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[5u]; + v_bits_unpacked[1u] = v_s.ptr[4u]; + v_bits_unpacked[2u] = v_s.ptr[3u]; + v_bits_unpacked[3u] = v_s.ptr[2u]; + v_bits_unpacked[4u] = v_s.ptr[1u]; + v_bits_unpacked[5u] = v_s.ptr[0u]; + v_bits_unpacked[6u] = 255u; + v_bits_unpacked[7u] = 255u; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u); + if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) | + (((uint64_t)(v_bits_unpacked[1u])) << 8u) | + (((uint64_t)(v_bits_unpacked[2u])) << 16u) | + (((uint64_t)(v_bits_unpacked[3u])) << 24u) | + (((uint64_t)(v_bits_unpacked[4u])) << 32u) | + (((uint64_t)(v_bits_unpacked[5u])) << 40u) | + (((uint64_t)(v_bits_unpacked[6u])) << 48u) | + (((uint64_t)(v_bits_unpacked[7u])) << 56u))) { + v_bits_unpacked[0u] = 0u; + v_bits_unpacked[1u] = 0u; + v_bits_unpacked[2u] = 0u; + v_bits_unpacked[3u] = 0u; + v_bits_unpacked[4u] = 0u; + v_bits_unpacked[5u] = 0u; + v_bits_unpacked[6u] = 0u; + v_bits_unpacked[7u] = 0u; + } + } + } else if (self->private_impl.f_color_type == 4u) { + if (4u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[1u]; + v_bits_unpacked[1u] = v_s.ptr[0u]; + v_bits_unpacked[2u] = v_s.ptr[1u]; + v_bits_unpacked[3u] = v_s.ptr[0u]; + v_bits_unpacked[4u] = v_s.ptr[1u]; + v_bits_unpacked[5u] = v_s.ptr[0u]; + v_bits_unpacked[6u] = v_s.ptr[3u]; + v_bits_unpacked[7u] = v_s.ptr[2u]; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u); + } + } else { + if (8u <= ((uint64_t)(v_s.len))) { + v_bits_unpacked[0u] = v_s.ptr[5u]; + v_bits_unpacked[1u] = v_s.ptr[4u]; + v_bits_unpacked[2u] = v_s.ptr[3u]; + v_bits_unpacked[3u] = v_s.ptr[2u]; + v_bits_unpacked[4u] = v_s.ptr[1u]; + v_bits_unpacked[5u] = v_s.ptr[0u]; + v_bits_unpacked[6u] = v_s.ptr[7u]; + v_bits_unpacked[7u] = v_s.ptr[6u]; + v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u); + } + } + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8)); + } + v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]); + } + } + v_prev_row = v_curr_row; + v_y += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]); + } + return wuffs_base__make_status(NULL); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) + +// ---------------- Status Codes Implementations + +const char wuffs_tga__error__bad_header[] = "#tga: bad header"; +const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding"; +const char wuffs_tga__error__truncated_input[] = "#tga: truncated input"; +const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file"; + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_image_config( + wuffs_tga__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_frame_config( + wuffs_tga__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_frame( + wuffs_tga__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_tga__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_tga__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_tga__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_tga__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_tga__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_tga__decoder__initialize( + wuffs_tga__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_tga__decoder* +wuffs_tga__decoder__alloc(void) { + wuffs_tga__decoder* x = + (wuffs_tga__decoder*)(calloc(sizeof(wuffs_tga__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_tga__decoder__initialize( + x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_tga__decoder(void) { + return sizeof(wuffs_tga__decoder); +} + +// ---------------- Function Implementations + +// -------- func tga.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__get_quirk( + const wuffs_tga__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func tga.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__set_quirk( + wuffs_tga__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func tga.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_image_config( + wuffs_tga__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_tga__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func tga.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_image_config( + wuffs_tga__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint32_t v_c = 0; + uint32_t v_c5 = 0; + uint32_t v_i = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + if (coro_susp_point) { + v_i = self->private_data.s_do_decode_image_config[0].v_i; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + self->private_impl.f_header_id_length = t_0; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + self->private_impl.f_header_color_map_type = t_1; + } + if (self->private_impl.f_header_color_map_type > 1u) { + status = wuffs_base__make_status(wuffs_tga__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_2 = *iop_a_src++; + self->private_impl.f_header_image_type = t_2; + } + if ((self->private_impl.f_header_image_type == 1u) || + (self->private_impl.f_header_image_type == 2u) || + (self->private_impl.f_header_image_type == 3u) || + (self->private_impl.f_header_image_type == 9u) || + (self->private_impl.f_header_image_type == 10u) || + (self->private_impl.f_header_image_type == 11u)) { + } else { + status = wuffs_base__make_status(wuffs_tga__error__bad_header); + goto exit; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); + uint16_t t_3; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; + if (num_bits_3 == 8) { + t_3 = ((uint16_t)(*scratch)); + break; + } + num_bits_3 += 8u; + *scratch |= ((uint64_t)(num_bits_3)) << 56; + } + } + self->private_impl.f_header_color_map_first_entry_index = t_3; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); + uint16_t t_4; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; + if (num_bits_4 == 8) { + t_4 = ((uint16_t)(*scratch)); + break; + } + num_bits_4 += 8u; + *scratch |= ((uint64_t)(num_bits_4)) << 56; + } + } + self->private_impl.f_header_color_map_length = t_4; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_5 = *iop_a_src++; + self->private_impl.f_header_color_map_entry_size = t_5; + } + if (self->private_impl.f_header_color_map_type != 0u) { + if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length > 256u)) { + status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); + goto exit; + } else if ((self->private_impl.f_header_color_map_entry_size != 15u) && + (self->private_impl.f_header_color_map_entry_size != 16u) && + (self->private_impl.f_header_color_map_entry_size != 24u) && + (self->private_impl.f_header_color_map_entry_size != 32u)) { + status = wuffs_base__make_status(wuffs_tga__error__bad_header); + goto exit; + } + } else { + if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length != 0u) || (self->private_impl.f_header_color_map_entry_size != 0u)) { + status = wuffs_base__make_status(wuffs_tga__error__bad_header); + goto exit; + } + } + self->private_data.s_do_decode_image_config[0].scratch = 4u; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); + uint32_t t_6; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6; + if (num_bits_6 == 8) { + t_6 = ((uint32_t)(*scratch)); + break; + } + num_bits_6 += 8u; + *scratch |= ((uint64_t)(num_bits_6)) << 56; + } + } + self->private_impl.f_width = t_6; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); + uint32_t t_7; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7; + if (num_bits_7 == 8) { + t_7 = ((uint32_t)(*scratch)); + break; + } + num_bits_7 += 8u; + *scratch |= ((uint64_t)(num_bits_7)) << 56; + } + } + self->private_impl.f_height = t_7; + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_8 = *iop_a_src++; + self->private_impl.f_header_pixel_depth = t_8; + } + if ((self->private_impl.f_header_pixel_depth != 1u) && + (self->private_impl.f_header_pixel_depth != 8u) && + (self->private_impl.f_header_pixel_depth != 15u) && + (self->private_impl.f_header_pixel_depth != 16u) && + (self->private_impl.f_header_pixel_depth != 24u) && + (self->private_impl.f_header_pixel_depth != 32u)) { + status = wuffs_base__make_status(wuffs_tga__error__bad_header); + goto exit; + } + if ((self->private_impl.f_header_image_type | 8u) == 9u) { + self->private_impl.f_scratch_bytes_per_pixel = 1u; + self->private_impl.f_src_bytes_per_pixel = 1u; + self->private_impl.f_src_pixfmt = 2164523016u; + self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15u) || (self->private_impl.f_header_color_map_entry_size == 24u)); + } else if ((self->private_impl.f_header_image_type | 8u) == 10u) { + if ((self->private_impl.f_header_pixel_depth == 15u) || (self->private_impl.f_header_pixel_depth == 16u)) { + self->private_impl.f_scratch_bytes_per_pixel = 4u; + self->private_impl.f_src_bytes_per_pixel = 0u; + self->private_impl.f_src_pixfmt = 2164295816u; + } else if (self->private_impl.f_header_pixel_depth == 24u) { + self->private_impl.f_scratch_bytes_per_pixel = 3u; + self->private_impl.f_src_bytes_per_pixel = 3u; + self->private_impl.f_src_pixfmt = 2147485832u; + self->private_impl.f_opaque = true; + } else if (self->private_impl.f_header_pixel_depth == 32u) { + self->private_impl.f_scratch_bytes_per_pixel = 4u; + self->private_impl.f_src_bytes_per_pixel = 4u; + self->private_impl.f_src_pixfmt = 2164295816u; + } else { + status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); + goto exit; + } + } else { + if (self->private_impl.f_header_pixel_depth == 8u) { + self->private_impl.f_scratch_bytes_per_pixel = 1u; + self->private_impl.f_src_bytes_per_pixel = 1u; + self->private_impl.f_src_pixfmt = 536870920u; + self->private_impl.f_opaque = true; + } else { + status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); + goto exit; + } + } + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_9 = *iop_a_src++; + self->private_impl.f_header_image_descriptor = t_9; + } + if ((self->private_impl.f_header_image_descriptor & 16u) != 0u) { + status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); + goto exit; + } + self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_header_id_length)); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); + if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; + if (self->private_impl.f_header_color_map_type != 0u) { + while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) { + if (self->private_impl.f_header_color_map_entry_size == 24u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17); + uint32_t t_10; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { + t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); + iop_a_src += 3; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10; + if (num_bits_10 == 16) { + t_10 = ((uint32_t)(*scratch)); + break; + } + num_bits_10 += 8u; + *scratch |= ((uint64_t)(num_bits_10)) << 56; + } + } + v_c = t_10; + } + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u; + } else if (self->private_impl.f_header_color_map_entry_size == 32u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19); + uint32_t t_11; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { + t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); + iop_a_src += 4; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11; + if (num_bits_11 == 24) { + t_11 = ((uint32_t)(*scratch)); + break; + } + num_bits_11 += 8u; + *scratch |= ((uint64_t)(num_bits_11)) << 56; + } + } + v_c = t_11; + } + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = ((uint8_t)((v_c >> 24u))); + } else { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21); + uint32_t t_12; + if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { + t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2; + } else { + self->private_data.s_do_decode_image_config[0].scratch = 0; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); + while (true) { + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; + uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56)); + *scratch <<= 8; + *scratch >>= 8; + *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12; + if (num_bits_12 == 8) { + t_12 = ((uint32_t)(*scratch)); + break; + } + num_bits_12 += 8u; + *scratch |= ((uint64_t)(num_bits_12)) << 56; + } + } + v_c = t_12; + } + v_c5 = (31u & (v_c >> 0u)); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 5u)); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 10u)); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u; + } + v_i += 1u; + } + while (v_i < 256u) { + self->private_data.f_src_palette[((v_i * 4u) + 0u)] = 0u; + self->private_data.f_src_palette[((v_i * 4u) + 1u)] = 0u; + self->private_data.f_src_palette[((v_i * 4u) + 2u)] = 0u; + self->private_data.f_src_palette[((v_i * 4u) + 3u)] = 255u; + v_i += 1u; + } + } + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + self->private_impl.f_src_pixfmt, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + self->private_impl.f_opaque); + } + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_image_config[0].v_i = v_i; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func tga.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_frame_config( + wuffs_tga__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_tga__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func tga.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_frame_config( + wuffs_tga__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + self->private_impl.f_frame_config_io_position, + 0u, + self->private_impl.f_opaque, + false, + 4278190080u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func tga.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__decode_frame( + wuffs_tga__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_tga__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func tga.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_tga__decoder__do_decode_frame( + wuffs_tga__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint64_t v_dst_bytes_per_pixel = 0; + uint32_t v_dst_x = 0; + uint32_t v_dst_y = 0; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst_palette = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint64_t v_dst_start = 0; + wuffs_base__slice_u8 v_src_palette = {0}; + uint64_t v_mark = 0; + uint64_t v_num_pixels64 = 0; + uint32_t v_num_pixels32 = 0; + uint32_t v_lit_length = 0; + uint32_t v_run_length = 0; + uint64_t v_num_dst_bytes = 0; + uint32_t v_num_src_bytes = 0; + uint32_t v_c = 0; + uint32_t v_c5 = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + if (coro_susp_point) { + v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel; + v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x; + v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y; + v_mark = self->private_data.s_do_decode_frame[0].v_mark; + v_num_pixels32 = self->private_data.s_do_decode_frame[0].v_num_pixels32; + v_lit_length = self->private_data.s_do_decode_frame[0].v_lit_length; + v_run_length = self->private_data.s_do_decode_frame[0].v_run_length; + v_num_dst_bytes = self->private_data.s_do_decode_frame[0].v_num_dst_bytes; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (self->private_impl.f_header_color_map_type != 0u) { + v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024); + } + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), + wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), + v_src_palette, + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u))); + if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) { + v_dst_y = ((uint32_t)(self->private_impl.f_height - 1u)); + } + if ((self->private_impl.f_header_image_type & 8u) == 0u) { + v_lit_length = self->private_impl.f_width; + } + label__resume__continue:; + while (true) { + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); + while (v_dst_y < self->private_impl.f_height) { + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); + v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel); + if (v_dst_start <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start); + } else { + v_dst = wuffs_base__utility__empty_slice_u8(); + } + while (v_dst_x < self->private_impl.f_width) { + if (self->private_impl.f_src_bytes_per_pixel > 0u) { + if (v_lit_length > 0u) { + v_mark = ((uint64_t)(iop_a_src - io0_a_src)); + v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel))); + v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length))))); + v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel); + v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel); + self->private_data.s_do_decode_frame[0].scratch = v_num_src_bytes; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { + self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); + iop_a_src = io2_a_src; + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + iop_a_src += self->private_data.s_do_decode_frame[0].scratch; + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); + if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes); + } else { + v_dst = wuffs_base__utility__empty_slice_u8(); + } + v_dst_x += v_num_pixels32; + v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535u); + if (v_lit_length > 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); + goto label__resume__continue; + } + } else if (v_run_length > 0u) { + v_run_length -= 1u; + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel)); + if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); + } + v_dst_x += 1u; + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); + goto label__resume__continue; + } + if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) { + v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u); + iop_a_src += 1u; + if ((v_lit_length + v_dst_x) > self->private_impl.f_width) { + status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); + goto exit; + } + } else { + if (self->private_impl.f_src_bytes_per_pixel == 1u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); + goto label__resume__continue; + } + v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u); + iop_a_src += 1u; + self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + } else if (self->private_impl.f_src_bytes_per_pixel == 3u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); + goto label__resume__continue; + } + v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u); + iop_a_src += 1u; + self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); + goto label__resume__continue; + } + v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u); + iop_a_src += 1u; + self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + self->private_data.f_scratch[3u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + } + if ((v_run_length + v_dst_x) > self->private_impl.f_width) { + status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); + goto exit; + } + } + } + } else { + if (v_lit_length > 0u) { + if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); + goto label__resume__continue; + } + v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2u; + v_c5 = (31u & (v_c >> 0u)); + self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 5u)); + self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 10u)); + self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + self->private_data.f_scratch[3u] = 255u; + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4)); + if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); + } + v_dst_x += 1u; + v_lit_length -= 1u; + } else if (v_run_length > 0u) { + v_run_length -= 1u; + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel)); + if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); + } + v_dst_x += 1u; + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); + goto label__resume__continue; + } + if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) { + v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u); + iop_a_src += 1u; + if ((v_lit_length + v_dst_x) > self->private_impl.f_width) { + status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); + goto exit; + } + } else { + if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); + goto label__resume__continue; + } + v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u); + iop_a_src += 1u; + v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); + iop_a_src += 2u; + v_c5 = (31u & (v_c >> 0u)); + self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 5u)); + self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + v_c5 = (31u & (v_c >> 10u)); + self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u)))); + self->private_data.f_scratch[3u] = 255u; + if ((v_run_length + v_dst_x) > self->private_impl.f_width) { + status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); + goto exit; + } + } + } + } + } + v_dst_x = 0u; + if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) { + v_dst_y -= 1u; + } else { + v_dst_y += 1u; + } + if ((self->private_impl.f_header_image_type & 8u) == 0u) { + v_lit_length = self->private_impl.f_width; + } + } + break; + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel; + self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x; + self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y; + self->private_data.s_do_decode_frame[0].v_mark = v_mark; + self->private_data.s_do_decode_frame[0].v_num_pixels32 = v_num_pixels32; + self->private_data.s_do_decode_frame[0].v_lit_length = v_lit_length; + self->private_data.s_do_decode_frame[0].v_run_length = v_run_length; + self->private_data.s_do_decode_frame[0].v_num_dst_bytes = v_num_dst_bytes; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func tga.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_tga__decoder__frame_dirty_rect( + const wuffs_tga__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func tga.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_tga__decoder__num_animation_loops( + const wuffs_tga__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func tga.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__num_decoded_frame_configs( + const wuffs_tga__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func tga.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__num_decoded_frames( + const wuffs_tga__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func tga.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__restart_frame( + wuffs_tga__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if (a_index != 0u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + self->private_impl.f_frame_config_io_position = a_io_position; + return wuffs_base__make_status(NULL); +} + +// -------- func tga.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_tga__decoder__set_report_metadata( + wuffs_tga__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func tga.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_tga__decoder__tell_me_more( + wuffs_tga__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + + goto ok; + ok: + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func tga.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_tga__decoder__history_retain_length( + const wuffs_tga__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func tga.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_tga__decoder__workbuf_len( + const wuffs_tga__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) + +// ---------------- Status Codes Implementations + +const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header"; +const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input"; + +// ---------------- Private Consts + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_image_config( + wuffs_wbmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_frame_config( + wuffs_wbmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src); + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_frame( + wuffs_wbmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts); + +// ---------------- VTables + +const wuffs_base__image_decoder__func_ptrs +wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = { + (wuffs_base__status(*)(void*, + wuffs_base__pixel_buffer*, + wuffs_base__io_buffer*, + wuffs_base__pixel_blend, + wuffs_base__slice_u8, + wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame), + (wuffs_base__status(*)(void*, + wuffs_base__frame_config*, + wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config), + (wuffs_base__status(*)(void*, + wuffs_base__image_config*, + wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config), + (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_wbmp__decoder__get_quirk), + (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__history_retain_length), + (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops), + (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs), + (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames), + (wuffs_base__status(*)(void*, + uint64_t, + uint64_t))(&wuffs_wbmp__decoder__restart_frame), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_wbmp__decoder__set_quirk), + (wuffs_base__empty_struct(*)(void*, + uint32_t, + bool))(&wuffs_wbmp__decoder__set_report_metadata), + (wuffs_base__status(*)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more), + (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_wbmp__decoder__initialize( + wuffs_wbmp__decoder* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = + wuffs_base__image_decoder__vtable_name; + self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = + (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder); + return wuffs_base__make_status(NULL); +} + +wuffs_wbmp__decoder* +wuffs_wbmp__decoder__alloc(void) { + wuffs_wbmp__decoder* x = + (wuffs_wbmp__decoder*)(calloc(sizeof(wuffs_wbmp__decoder), 1)); + if (!x) { + return NULL; + } + if (wuffs_wbmp__decoder__initialize( + x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_wbmp__decoder(void) { + return sizeof(wuffs_wbmp__decoder); +} + +// ---------------- Function Implementations + +// -------- func wbmp.decoder.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__get_quirk( + const wuffs_wbmp__decoder* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func wbmp.decoder.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__set_quirk( + wuffs_wbmp__decoder* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func wbmp.decoder.decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_image_config( + wuffs_wbmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 1)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func wbmp.decoder.do_decode_image_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_image_config( + wuffs_wbmp__decoder* self, + wuffs_base__image_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + uint8_t v_c = 0; + uint32_t v_i = 0; + uint32_t v_p = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; + if (coro_susp_point) { + v_i = self->private_data.s_do_decode_image_config[0].v_i; + v_p = self->private_data.s_do_decode_image_config[0].v_p; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence != 0u) { + status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + goto exit; + } + v_i = 0u; + while (v_i < 2u) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_0 = *iop_a_src++; + v_c = t_0; + } + if (v_c != 0u) { + status = wuffs_base__make_status(wuffs_wbmp__error__bad_header); + goto exit; + } + v_i += 1u; + } + v_i = 0u; + while (v_i < 2u) { + v_p = 0u; + while (true) { + { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); + if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + goto suspend; + } + uint8_t t_1 = *iop_a_src++; + v_c = t_1; + } + v_p |= ((uint32_t)((v_c & 127u))); + if ((v_c >> 7u) == 0u) { + break; + } else if (v_p > 131071u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); + goto exit; + } + v_p <<= 7u; + } + if (v_i == 0u) { + self->private_impl.f_width = v_p; + } else { + self->private_impl.f_height = v_p; + } + v_i += 1u; + } + self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); + if (a_dst != NULL) { + wuffs_base__image_config__set( + a_dst, + 2198077448u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height, + self->private_impl.f_frame_config_io_position, + true); + } + self->private_impl.f_call_sequence = 32u; + + goto ok; + ok: + self->private_impl.p_do_decode_image_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_image_config[0].v_i = v_i; + self->private_data.s_do_decode_image_config[0].v_p = v_p; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func wbmp.decoder.decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_frame_config( + wuffs_wbmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 2)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func wbmp.decoder.do_decode_frame_config + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_frame_config( + wuffs_wbmp__decoder* self, + wuffs_base__frame_config* a_dst, + wuffs_base__io_buffer* a_src) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 32u) { + } else if (self->private_impl.f_call_sequence < 32u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else if (self->private_impl.f_call_sequence == 40u) { + if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { + status = wuffs_base__make_status(wuffs_base__error__bad_restart); + goto exit; + } + } else if (self->private_impl.f_call_sequence == 64u) { + self->private_impl.f_call_sequence = 96u; + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + if (a_dst != NULL) { + wuffs_base__frame_config__set( + a_dst, + wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height), + ((wuffs_base__flicks)(0u)), + 0u, + self->private_impl.f_frame_config_io_position, + 0u, + true, + false, + 4278190080u); + } + self->private_impl.f_call_sequence = 64u; + + ok: + self->private_impl.p_do_decode_frame_config[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func wbmp.decoder.decode_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__decode_frame( + wuffs_wbmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 3)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + + uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + while (true) { + { + wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self, + a_dst, + a_src, + a_blend, + a_workbuf, + a_opts); + v_status = t_0; + } + if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { + status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); + goto exit; + } + status = v_status; + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); + } + + ok: + self->private_impl.p_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; + + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func wbmp.decoder.do_decode_frame + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__status +wuffs_wbmp__decoder__do_decode_frame( + wuffs_wbmp__decoder* self, + wuffs_base__pixel_buffer* a_dst, + wuffs_base__io_buffer* a_src, + wuffs_base__pixel_blend a_blend, + wuffs_base__slice_u8 a_workbuf, + wuffs_base__decode_frame_options* a_opts) { + wuffs_base__status status = wuffs_base__make_status(NULL); + + wuffs_base__status v_status = wuffs_base__make_status(NULL); + wuffs_base__pixel_format v_dst_pixfmt = {0}; + uint32_t v_dst_bits_per_pixel = 0; + uint64_t v_dst_bytes_per_pixel = 0; + uint64_t v_dst_x_in_bytes = 0; + uint32_t v_dst_x = 0; + uint32_t v_dst_y = 0; + wuffs_base__table_u8 v_tab = {0}; + wuffs_base__slice_u8 v_dst = {0}; + uint8_t v_src[1] = {0}; + uint8_t v_c = 0; + + const uint8_t* iop_a_src = NULL; + const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; + if (a_src && a_src->data.ptr) { + io0_a_src = a_src->data.ptr; + io1_a_src = io0_a_src + a_src->meta.ri; + iop_a_src = io1_a_src; + io2_a_src = io0_a_src + a_src->meta.wi; + } + + uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; + if (coro_susp_point) { + v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel; + v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x; + v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y; + memcpy(v_src, self->private_data.s_do_decode_frame[0].v_src, sizeof(v_src)); + v_c = self->private_data.s_do_decode_frame[0].v_c; + } + switch (coro_susp_point) { + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; + + if (self->private_impl.f_call_sequence == 64u) { + } else if (self->private_impl.f_call_sequence < 64u) { + if (a_src) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); + status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src); + if (a_src) { + iop_a_src = a_src->data.ptr + a_src->meta.ri; + } + if (status.repr) { + goto suspend; + } + } else { + status = wuffs_base__make_status(wuffs_base__note__end_of_data); + goto ok; + } + v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, + wuffs_base__pixel_buffer__pixel_format(a_dst), + wuffs_base__pixel_buffer__palette(a_dst), + wuffs_base__utility__make_pixel_format(536870920u), + wuffs_base__utility__empty_slice_u8(), + a_blend); + if ( ! wuffs_base__status__is_ok(&v_status)) { + status = v_status; + if (wuffs_base__status__is_error(&status)) { + goto exit; + } else if (wuffs_base__status__is_suspension(&status)) { + status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); + goto exit; + } + goto ok; + } + v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); + v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); + if ((v_dst_bits_per_pixel & 7u) != 0u) { + status = wuffs_base__make_status(wuffs_base__error__unsupported_option); + goto exit; + } + v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u))); + if (self->private_impl.f_width > 0u) { + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + while (v_dst_y < self->private_impl.f_height) { + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); + v_dst_x = 0u; + while (v_dst_x < self->private_impl.f_width) { + if ((v_dst_x & 7u) == 0u) { + while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) { + status = wuffs_base__make_status(wuffs_base__suspension__short_read); + WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); + v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u); + v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); + v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel); + if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes); + } + } + v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); + iop_a_src += 1u; + } + if ((v_c & 128u) == 0u) { + v_src[0u] = 0u; + } else { + v_src[0u] = 255u; + } + v_c = ((uint8_t)((((uint32_t)(v_c)) << 1u))); + wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1)); + if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { + v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); + } + v_dst_x += 1u; + } + v_dst_y += 1u; + } + } + self->private_impl.f_call_sequence = 96u; + + ok: + self->private_impl.p_do_decode_frame[0] = 0; + goto exit; + } + + goto suspend; + suspend: + self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; + self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel; + self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x; + self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y; + memcpy(self->private_data.s_do_decode_frame[0].v_src, v_src, sizeof(v_src)); + self->private_data.s_do_decode_frame[0].v_c = v_c; + + goto exit; + exit: + if (a_src && a_src->data.ptr) { + a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); + } + + return status; +} + +// -------- func wbmp.decoder.frame_dirty_rect + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 +wuffs_wbmp__decoder__frame_dirty_rect( + const wuffs_wbmp__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_rect_ie_u32(); + } + + return wuffs_base__utility__make_rect_ie_u32( + 0u, + 0u, + self->private_impl.f_width, + self->private_impl.f_height); +} + +// -------- func wbmp.decoder.num_animation_loops + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_wbmp__decoder__num_animation_loops( + const wuffs_wbmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func wbmp.decoder.num_decoded_frame_configs + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__num_decoded_frame_configs( + const wuffs_wbmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 32u) { + return 1u; + } + return 0u; +} + +// -------- func wbmp.decoder.num_decoded_frames + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__num_decoded_frames( + const wuffs_wbmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + if (self->private_impl.f_call_sequence > 64u) { + return 1u; + } + return 0u; +} + +// -------- func wbmp.decoder.restart_frame + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__restart_frame( + wuffs_wbmp__decoder* self, + uint64_t a_index, + uint64_t a_io_position) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + if (self->private_impl.f_call_sequence < 32u) { + return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); + } + if (a_index != 0u) { + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + self->private_impl.f_call_sequence = 40u; + self->private_impl.f_frame_config_io_position = a_io_position; + return wuffs_base__make_status(NULL); +} + +// -------- func wbmp.decoder.set_report_metadata + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_wbmp__decoder__set_report_metadata( + wuffs_wbmp__decoder* self, + uint32_t a_fourcc, + bool a_report) { + return wuffs_base__make_empty_struct(); +} + +// -------- func wbmp.decoder.tell_me_more + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_wbmp__decoder__tell_me_more( + wuffs_wbmp__decoder* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + if (!a_dst || !a_src) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__bad_argument); + } + if ((self->private_impl.active_coroutine != 0) && + (self->private_impl.active_coroutine != 4)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); + } + self->private_impl.active_coroutine = 0; + wuffs_base__status status = wuffs_base__make_status(NULL); + + status = wuffs_base__make_status(wuffs_base__error__no_more_information); + goto exit; + + goto ok; + ok: + goto exit; + exit: + if (wuffs_base__status__is_error(&status)) { + self->private_impl.magic = WUFFS_BASE__DISABLED; + } + return status; +} + +// -------- func wbmp.decoder.history_retain_length + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_wbmp__decoder__history_retain_length( + const wuffs_wbmp__decoder* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func wbmp.decoder.workbuf_len + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 +wuffs_wbmp__decoder__workbuf_len( + const wuffs_wbmp__decoder* self) { + if (!self) { + return wuffs_base__utility__empty_range_ii_u64(); + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return wuffs_base__utility__empty_range_ii_u64(); + } + + return wuffs_base__utility__make_range_ii_u64(0u, 0u); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) + +// ---------------- Status Codes Implementations + +// ---------------- Private Consts + +#define WUFFS_XXHASH32__XXH_PRIME32_1 2654435761 + +#define WUFFS_XXHASH32__XXH_PRIME32_2 2246822519 + +#define WUFFS_XXHASH32__XXH_PRIME32_3 3266489917 + +#define WUFFS_XXHASH32__XXH_PRIME32_4 668265263 + +#define WUFFS_XXHASH32__XXH_PRIME32_5 374761393 + +#define WUFFS_XXHASH32__INITIAL_V0 606290984 + +#define WUFFS_XXHASH32__INITIAL_V1 2246822519 + +#define WUFFS_XXHASH32__INITIAL_V2 0 + +#define WUFFS_XXHASH32__INITIAL_V3 1640531535 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_xxhash32__hasher__up( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x); + +// ---------------- VTables + +const wuffs_base__hasher_u32__func_ptrs +wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = { + (uint32_t(*)(const void*))(&wuffs_xxhash32__hasher__checksum_u32), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_xxhash32__hasher__get_quirk), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_xxhash32__hasher__set_quirk), + (wuffs_base__empty_struct(*)(void*, + wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update), + (uint32_t(*)(void*, + wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update_u32), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_xxhash32__hasher__initialize( + wuffs_xxhash32__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name = + wuffs_base__hasher_u32__vtable_name; + self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers = + (const void*)(&wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32); + return wuffs_base__make_status(NULL); +} + +wuffs_xxhash32__hasher* +wuffs_xxhash32__hasher__alloc(void) { + wuffs_xxhash32__hasher* x = + (wuffs_xxhash32__hasher*)(calloc(sizeof(wuffs_xxhash32__hasher), 1)); + if (!x) { + return NULL; + } + if (wuffs_xxhash32__hasher__initialize( + x, sizeof(wuffs_xxhash32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_xxhash32__hasher(void) { + return sizeof(wuffs_xxhash32__hasher); +} + +// ---------------- Function Implementations + +// -------- func xxhash32.hasher.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash32__hasher__get_quirk( + const wuffs_xxhash32__hasher* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func xxhash32.hasher.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_xxhash32__hasher__set_quirk( + wuffs_xxhash32__hasher* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func xxhash32.hasher.update + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_xxhash32__hasher__update( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + wuffs_base__slice_u8 v_remaining = {0}; + + if ((self->private_impl.f_length_modulo_u32 == 0u) && ! self->private_impl.f_length_overflows_u32) { + self->private_impl.f_v0 = 606290984u; + self->private_impl.f_v1 = 2246822519u; + self->private_impl.f_v2 = 0u; + self->private_impl.f_v3 = 1640531535u; + } + while (((uint64_t)(a_x.len)) > 0u) { + v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u); + if (((uint64_t)(a_x.len)) > 16777216u) { + v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 16777216u); + a_x = wuffs_base__slice_u8__subslice_j(a_x, 16777216u); + } + wuffs_xxhash32__hasher__up(self, a_x); + a_x = v_remaining; + } + return wuffs_base__make_empty_struct(); +} + +// -------- func xxhash32.hasher.update_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_xxhash32__hasher__update_u32( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + wuffs_xxhash32__hasher__update(self, a_x); + return wuffs_xxhash32__hasher__checksum_u32(self); +} + +// -------- func xxhash32.hasher.up + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_xxhash32__hasher__up( + wuffs_xxhash32__hasher* self, + wuffs_base__slice_u8 a_x) { + uint32_t v_new_lmu = 0; + uint32_t v_buf_u32 = 0; + uint32_t v_buf_len = 0; + uint32_t v_v0 = 0; + uint32_t v_v1 = 0; + uint32_t v_v2 = 0; + uint32_t v_v3 = 0; + wuffs_base__slice_u8 v_p = {0}; + + v_new_lmu = ((uint32_t)(self->private_impl.f_length_modulo_u32 + ((uint32_t)(((uint64_t)(a_x.len)))))); + self->private_impl.f_length_overflows_u32 = ((v_new_lmu < self->private_impl.f_length_modulo_u32) || self->private_impl.f_length_overflows_u32); + self->private_impl.f_length_modulo_u32 = v_new_lmu; + while (true) { + if (self->private_impl.f_buf_len >= 16u) { + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) | + (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u)); + v_v0 = ((uint32_t)(self->private_impl.f_v0 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u)); + self->private_impl.f_v0 = ((uint32_t)(v_v0 * 2654435761u)); + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) | + (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u)); + v_v1 = ((uint32_t)(self->private_impl.f_v1 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u)); + self->private_impl.f_v1 = ((uint32_t)(v_v1 * 2654435761u)); + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) | + (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u)); + v_v2 = ((uint32_t)(self->private_impl.f_v2 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u)); + self->private_impl.f_v2 = ((uint32_t)(v_v2 * 2654435761u)); + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[12u])) | + (((uint32_t)(self->private_impl.f_buf_data[13u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[14u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[15u])) << 24u)); + v_v3 = ((uint32_t)(self->private_impl.f_v3 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u)); + self->private_impl.f_v3 = ((uint32_t)(v_v3 * 2654435761u)); + self->private_impl.f_buf_len = 0u; + break; + } + if (((uint64_t)(a_x.len)) <= 0u) { + return wuffs_base__make_empty_struct(); + } + self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u]; +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wconversion" +#endif + self->private_impl.f_buf_len += 1u; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + v_buf_len = ((uint32_t)((self->private_impl.f_buf_len & 15u))); + v_v0 = self->private_impl.f_v0; + v_v1 = self->private_impl.f_v1; + v_v2 = self->private_impl.f_v2; + v_v3 = self->private_impl.f_v3; + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 16; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16); + while (v_p.ptr < i_end0_p) { + v_buf_u32 = (((uint32_t)(v_p.ptr[0u])) | + (((uint32_t)(v_p.ptr[1u])) << 8u) | + (((uint32_t)(v_p.ptr[2u])) << 16u) | + (((uint32_t)(v_p.ptr[3u])) << 24u)); + v_v0 = ((uint32_t)(v_v0 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u)); + v_v0 = ((uint32_t)(v_v0 * 2654435761u)); + v_buf_u32 = (((uint32_t)(v_p.ptr[4u])) | + (((uint32_t)(v_p.ptr[5u])) << 8u) | + (((uint32_t)(v_p.ptr[6u])) << 16u) | + (((uint32_t)(v_p.ptr[7u])) << 24u)); + v_v1 = ((uint32_t)(v_v1 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u)); + v_v1 = ((uint32_t)(v_v1 * 2654435761u)); + v_buf_u32 = (((uint32_t)(v_p.ptr[8u])) | + (((uint32_t)(v_p.ptr[9u])) << 8u) | + (((uint32_t)(v_p.ptr[10u])) << 16u) | + (((uint32_t)(v_p.ptr[11u])) << 24u)); + v_v2 = ((uint32_t)(v_v2 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u)); + v_v2 = ((uint32_t)(v_v2 * 2654435761u)); + v_buf_u32 = (((uint32_t)(v_p.ptr[12u])) | + (((uint32_t)(v_p.ptr[13u])) << 8u) | + (((uint32_t)(v_p.ptr[14u])) << 16u) | + (((uint32_t)(v_p.ptr[15u])) << 24u)); + v_v3 = ((uint32_t)(v_v3 + ((uint32_t)(v_buf_u32 * 2246822519u)))); + v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u)); + v_v3 = ((uint32_t)(v_v3 * 2654435761u)); + v_p.ptr += 16; + } + v_p.len = 1; + uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end1_p) { + self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u]; + v_buf_len = ((v_buf_len + 1u) & 15u); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_buf_len = ((uint8_t)(v_buf_len)); + self->private_impl.f_v0 = v_v0; + self->private_impl.f_v1 = v_v1; + self->private_impl.f_v2 = v_v2; + self->private_impl.f_v3 = v_v3; + return wuffs_base__make_empty_struct(); +} + +// -------- func xxhash32.hasher.checksum_u32 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint32_t +wuffs_xxhash32__hasher__checksum_u32( + const wuffs_xxhash32__hasher* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + uint32_t v_ret = 0; + uint32_t v_i = 0; + uint32_t v_n = 0; + uint32_t v_buf_u32 = 0; + + if ((self->private_impl.f_length_modulo_u32 >= 16u) || self->private_impl.f_length_overflows_u32) { + v_ret += (((uint32_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 31u)); + v_ret += (((uint32_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 25u)); + v_ret += (((uint32_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 20u)); + v_ret += (((uint32_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 14u)); + v_ret += self->private_impl.f_length_modulo_u32; + } else { + v_ret += 374761393u; + v_ret += self->private_impl.f_length_modulo_u32; + } + v_n = 16u; + v_n = wuffs_base__u32__min(v_n, ((uint32_t)(self->private_impl.f_buf_len))); + if (4u <= v_n) { + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) | + (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u)); + v_ret += ((uint32_t)(v_buf_u32 * 3266489917u)); + v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u)); + v_ret *= 668265263u; + v_i = 4u; + } + if (8u <= v_n) { + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) | + (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u)); + v_ret += ((uint32_t)(v_buf_u32 * 3266489917u)); + v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u)); + v_ret *= 668265263u; + v_i = 8u; + } + if (12u <= v_n) { + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) | + (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u)); + v_ret += ((uint32_t)(v_buf_u32 * 3266489917u)); + v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u)); + v_ret *= 668265263u; + v_i = 12u; + } + while (v_i < v_n) { + v_ret += ((uint32_t)(((uint32_t)(self->private_impl.f_buf_data[v_i])) * 374761393u)); + v_ret = (((uint32_t)(v_ret << 11u)) | (v_ret >> 21u)); + v_ret *= 2654435761u; + v_i += 1u; + } + v_ret ^= (v_ret >> 15u); + v_ret *= 2246822519u; + v_ret ^= (v_ret >> 13u); + v_ret *= 3266489917u; + v_ret ^= (v_ret >> 16u); + return v_ret; +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) + +// ---------------- Status Codes Implementations + +// ---------------- Private Consts + +#define WUFFS_XXHASH64__XXH_PRIME64_1 11400714785074694791 + +#define WUFFS_XXHASH64__XXH_PRIME64_2 14029467366897019727 + +#define WUFFS_XXHASH64__XXH_PRIME64_3 1609587929392839161 + +#define WUFFS_XXHASH64__XXH_PRIME64_4 9650029242287828579 + +#define WUFFS_XXHASH64__XXH_PRIME64_5 2870177450012600261 + +#define WUFFS_XXHASH64__INITIAL_V0 6983438078262162902 + +#define WUFFS_XXHASH64__INITIAL_V1 14029467366897019727 + +#define WUFFS_XXHASH64__INITIAL_V2 0 + +#define WUFFS_XXHASH64__INITIAL_V3 7046029288634856825 + +// ---------------- Private Initializer Prototypes + +// ---------------- Private Function Prototypes + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_xxhash64__hasher__up( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x); + +// ---------------- VTables + +const wuffs_base__hasher_u64__func_ptrs +wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64 = { + (uint64_t(*)(const void*))(&wuffs_xxhash64__hasher__checksum_u64), + (uint64_t(*)(const void*, + uint32_t))(&wuffs_xxhash64__hasher__get_quirk), + (wuffs_base__status(*)(void*, + uint32_t, + uint64_t))(&wuffs_xxhash64__hasher__set_quirk), + (wuffs_base__empty_struct(*)(void*, + wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update), + (uint64_t(*)(void*, + wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update_u64), +}; + +// ---------------- Initializer Implementations + +wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT +wuffs_xxhash64__hasher__initialize( + wuffs_xxhash64__hasher* self, + size_t sizeof_star_self, + uint64_t wuffs_version, + uint32_t options){ + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (sizeof(*self) != sizeof_star_self) { + return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); + } + if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || + (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { + return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); + } + + if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { + // The whole point of this if-check is to detect an uninitialized *self. + // We disable the warning on GCC. Clang-5.0 does not have this warning. +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + if (self->private_impl.magic != 0) { + return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); + } +#if !defined(__clang__) && defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + } else { + if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { + memset(self, 0, sizeof(*self)); + options |= WUFFS_INITIALIZE__ALREADY_ZEROED; + } else { + memset(&(self->private_impl), 0, sizeof(self->private_impl)); + } + } + + self->private_impl.magic = WUFFS_BASE__MAGIC; + self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name = + wuffs_base__hasher_u64__vtable_name; + self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers = + (const void*)(&wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64); + return wuffs_base__make_status(NULL); +} + +wuffs_xxhash64__hasher* +wuffs_xxhash64__hasher__alloc(void) { + wuffs_xxhash64__hasher* x = + (wuffs_xxhash64__hasher*)(calloc(sizeof(wuffs_xxhash64__hasher), 1)); + if (!x) { + return NULL; + } + if (wuffs_xxhash64__hasher__initialize( + x, sizeof(wuffs_xxhash64__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { + free(x); + return NULL; + } + return x; +} + +size_t +sizeof__wuffs_xxhash64__hasher(void) { + return sizeof(wuffs_xxhash64__hasher); +} + +// ---------------- Function Implementations + +// -------- func xxhash64.hasher.get_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__get_quirk( + const wuffs_xxhash64__hasher* self, + uint32_t a_key) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + return 0u; +} + +// -------- func xxhash64.hasher.set_quirk + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__status +wuffs_xxhash64__hasher__set_quirk( + wuffs_xxhash64__hasher* self, + uint32_t a_key, + uint64_t a_value) { + if (!self) { + return wuffs_base__make_status(wuffs_base__error__bad_receiver); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_status( + (self->private_impl.magic == WUFFS_BASE__DISABLED) + ? wuffs_base__error__disabled_by_previous_error + : wuffs_base__error__initialize_not_called); + } + + return wuffs_base__make_status(wuffs_base__error__unsupported_option); +} + +// -------- func xxhash64.hasher.update + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct +wuffs_xxhash64__hasher__update( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return wuffs_base__make_empty_struct(); + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return wuffs_base__make_empty_struct(); + } + + if ((self->private_impl.f_length_modulo_u64 == 0u) && ! self->private_impl.f_length_overflows_u64) { + self->private_impl.f_v0 = 6983438078262162902u; + self->private_impl.f_v1 = 14029467366897019727u; + self->private_impl.f_v2 = 0u; + self->private_impl.f_v3 = 7046029288634856825u; + } + wuffs_xxhash64__hasher__up(self, a_x); + return wuffs_base__make_empty_struct(); +} + +// -------- func xxhash64.hasher.update_u64 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__update_u64( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x) { + if (!self) { + return 0; + } + if (self->private_impl.magic != WUFFS_BASE__MAGIC) { + return 0; + } + + wuffs_xxhash64__hasher__update(self, a_x); + return wuffs_xxhash64__hasher__checksum_u64(self); +} + +// -------- func xxhash64.hasher.up + +WUFFS_BASE__GENERATED_C_CODE +static wuffs_base__empty_struct +wuffs_xxhash64__hasher__up( + wuffs_xxhash64__hasher* self, + wuffs_base__slice_u8 a_x) { + uint64_t v_new_lmu = 0; + uint64_t v_buf_u64 = 0; + uint32_t v_buf_len = 0; + uint64_t v_v0 = 0; + uint64_t v_v1 = 0; + uint64_t v_v2 = 0; + uint64_t v_v3 = 0; + wuffs_base__slice_u8 v_p = {0}; + + v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len)))); + self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64); + self->private_impl.f_length_modulo_u64 = v_new_lmu; + while (true) { + if (self->private_impl.f_buf_len >= 32u) { + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) | + (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u)); + v_v0 = ((uint64_t)(self->private_impl.f_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u)); + self->private_impl.f_v0 = ((uint64_t)(v_v0 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) | + (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u)); + v_v1 = ((uint64_t)(self->private_impl.f_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u)); + self->private_impl.f_v1 = ((uint64_t)(v_v1 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) | + (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u)); + v_v2 = ((uint64_t)(self->private_impl.f_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u)); + self->private_impl.f_v2 = ((uint64_t)(v_v2 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[24u])) | + (((uint64_t)(self->private_impl.f_buf_data[25u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[26u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[27u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[28u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[29u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[30u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[31u])) << 56u)); + v_v3 = ((uint64_t)(self->private_impl.f_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u)); + self->private_impl.f_v3 = ((uint64_t)(v_v3 * 11400714785074694791u)); + self->private_impl.f_buf_len = 0u; + break; + } + if (((uint64_t)(a_x.len)) <= 0u) { + return wuffs_base__make_empty_struct(); + } + self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u]; + self->private_impl.f_buf_len += 1u; + a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u); + } + v_buf_len = (self->private_impl.f_buf_len & 31u); + v_v0 = self->private_impl.f_v0; + v_v1 = self->private_impl.f_v1; + v_v2 = self->private_impl.f_v2; + v_v3 = self->private_impl.f_v3; + { + wuffs_base__slice_u8 i_slice_p = a_x; + v_p.ptr = i_slice_p.ptr; + v_p.len = 32; + uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); + while (v_p.ptr < i_end0_p) { + v_buf_u64 = (((uint64_t)(v_p.ptr[0u])) | + (((uint64_t)(v_p.ptr[1u])) << 8u) | + (((uint64_t)(v_p.ptr[2u])) << 16u) | + (((uint64_t)(v_p.ptr[3u])) << 24u) | + (((uint64_t)(v_p.ptr[4u])) << 32u) | + (((uint64_t)(v_p.ptr[5u])) << 40u) | + (((uint64_t)(v_p.ptr[6u])) << 48u) | + (((uint64_t)(v_p.ptr[7u])) << 56u)); + v_v0 = ((uint64_t)(v_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u)); + v_v0 = ((uint64_t)(v_v0 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(v_p.ptr[8u])) | + (((uint64_t)(v_p.ptr[9u])) << 8u) | + (((uint64_t)(v_p.ptr[10u])) << 16u) | + (((uint64_t)(v_p.ptr[11u])) << 24u) | + (((uint64_t)(v_p.ptr[12u])) << 32u) | + (((uint64_t)(v_p.ptr[13u])) << 40u) | + (((uint64_t)(v_p.ptr[14u])) << 48u) | + (((uint64_t)(v_p.ptr[15u])) << 56u)); + v_v1 = ((uint64_t)(v_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u)); + v_v1 = ((uint64_t)(v_v1 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(v_p.ptr[16u])) | + (((uint64_t)(v_p.ptr[17u])) << 8u) | + (((uint64_t)(v_p.ptr[18u])) << 16u) | + (((uint64_t)(v_p.ptr[19u])) << 24u) | + (((uint64_t)(v_p.ptr[20u])) << 32u) | + (((uint64_t)(v_p.ptr[21u])) << 40u) | + (((uint64_t)(v_p.ptr[22u])) << 48u) | + (((uint64_t)(v_p.ptr[23u])) << 56u)); + v_v2 = ((uint64_t)(v_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u)); + v_v2 = ((uint64_t)(v_v2 * 11400714785074694791u)); + v_buf_u64 = (((uint64_t)(v_p.ptr[24u])) | + (((uint64_t)(v_p.ptr[25u])) << 8u) | + (((uint64_t)(v_p.ptr[26u])) << 16u) | + (((uint64_t)(v_p.ptr[27u])) << 24u) | + (((uint64_t)(v_p.ptr[28u])) << 32u) | + (((uint64_t)(v_p.ptr[29u])) << 40u) | + (((uint64_t)(v_p.ptr[30u])) << 48u) | + (((uint64_t)(v_p.ptr[31u])) << 56u)); + v_v3 = ((uint64_t)(v_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u)))); + v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u)); + v_v3 = ((uint64_t)(v_v3 * 11400714785074694791u)); + v_p.ptr += 32; + } + v_p.len = 1; + uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len; + while (v_p.ptr < i_end1_p) { + self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u]; + v_buf_len = ((v_buf_len + 1u) & 31u); + v_p.ptr += 1; + } + v_p.len = 0; + } + self->private_impl.f_buf_len = v_buf_len; + self->private_impl.f_v0 = v_v0; + self->private_impl.f_v1 = v_v1; + self->private_impl.f_v2 = v_v2; + self->private_impl.f_v3 = v_v3; + return wuffs_base__make_empty_struct(); +} + +// -------- func xxhash64.hasher.checksum_u64 + +WUFFS_BASE__GENERATED_C_CODE +WUFFS_BASE__MAYBE_STATIC uint64_t +wuffs_xxhash64__hasher__checksum_u64( + const wuffs_xxhash64__hasher* self) { + if (!self) { + return 0; + } + if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && + (self->private_impl.magic != WUFFS_BASE__DISABLED)) { + return 0; + } + + uint64_t v_ret = 0; + uint64_t v_v0 = 0; + uint64_t v_v1 = 0; + uint64_t v_v2 = 0; + uint64_t v_v3 = 0; + uint32_t v_i = 0; + uint32_t v_i8 = 0; + uint32_t v_n = 0; + uint32_t v_buf_u32 = 0; + uint64_t v_buf_u64 = 0; + + if ((self->private_impl.f_length_modulo_u64 >= 32u) || self->private_impl.f_length_overflows_u64) { + v_ret += (((uint64_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 63u)); + v_ret += (((uint64_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 57u)); + v_ret += (((uint64_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 52u)); + v_ret += (((uint64_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 46u)); + v_v0 = ((uint64_t)(self->private_impl.f_v0 * 14029467366897019727u)); + v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u)); + v_v0 *= 11400714785074694791u; + v_v1 = ((uint64_t)(self->private_impl.f_v1 * 14029467366897019727u)); + v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u)); + v_v1 *= 11400714785074694791u; + v_v2 = ((uint64_t)(self->private_impl.f_v2 * 14029467366897019727u)); + v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u)); + v_v2 *= 11400714785074694791u; + v_v3 = ((uint64_t)(self->private_impl.f_v3 * 14029467366897019727u)); + v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u)); + v_v3 *= 11400714785074694791u; + v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v0) * 11400714785074694791u)) + 9650029242287828579u)); + v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v1) * 11400714785074694791u)) + 9650029242287828579u)); + v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v2) * 11400714785074694791u)) + 9650029242287828579u)); + v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v3) * 11400714785074694791u)) + 9650029242287828579u)); + v_ret += self->private_impl.f_length_modulo_u64; + } else { + v_ret += 2870177450012600261u; + v_ret += self->private_impl.f_length_modulo_u64; + } + v_n = 32u; + v_n = wuffs_base__u32__min(v_n, self->private_impl.f_buf_len); + if (8u <= v_n) { + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) | + (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u)); + v_buf_u64 *= 14029467366897019727u; + v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u)); + v_buf_u64 *= 11400714785074694791u; + v_ret ^= v_buf_u64; + v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u)); + v_ret *= 11400714785074694791u; + v_ret += 9650029242287828579u; + v_i = 8u; + } + if (16u <= v_n) { + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) | + (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u)); + v_buf_u64 *= 14029467366897019727u; + v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u)); + v_buf_u64 *= 11400714785074694791u; + v_ret ^= v_buf_u64; + v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u)); + v_ret *= 11400714785074694791u; + v_ret += 9650029242287828579u; + v_i = 16u; + } + if (24u <= v_n) { + v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) | + (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) | + (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) | + (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) | + (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) | + (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) | + (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) | + (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u)); + v_buf_u64 *= 14029467366897019727u; + v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u)); + v_buf_u64 *= 11400714785074694791u; + v_ret ^= v_buf_u64; + v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u)); + v_ret *= 11400714785074694791u; + v_ret += 9650029242287828579u; + v_i = 24u; + } + if ((v_n & 4u) != 0u) { + v_i8 = (v_i & 24u); + v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 0u)])) | + (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 1u)])) << 8u) | + (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 2u)])) << 16u) | + (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 3u)])) << 24u)); + v_ret ^= ((uint64_t)(((uint64_t)(v_buf_u32)) * 11400714785074694791u)); + v_ret = (((uint64_t)(v_ret << 23u)) | (v_ret >> 41u)); + v_ret *= 14029467366897019727u; + v_ret += 1609587929392839161u; + v_i = (v_i8 + 4u); + } + while (v_i < v_n) { + v_ret ^= ((uint64_t)(((uint64_t)(self->private_impl.f_buf_data[v_i])) * 2870177450012600261u)); + v_ret = (((uint64_t)(v_ret << 11u)) | (v_ret >> 53u)); + v_ret *= 11400714785074694791u; + v_i += 1u; + } + v_ret ^= (v_ret >> 33u); + v_ret *= 14029467366897019727u; + v_ret ^= (v_ret >> 29u); + v_ret *= 1609587929392839161u; + v_ret ^= (v_ret >> 32u); + return ((uint64_t)(v_ret)); +} + +#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) + +#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +// ---------------- Auxiliary - Base + +// Auxiliary code is discussed at +// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__BASE) + +namespace wuffs_aux { + +namespace sync_io { + +// -------- + +DynIOBuffer::DynIOBuffer(uint64_t max_incl) + : m_buf(wuffs_base__empty_io_buffer()), m_max_incl(max_incl) {} + +DynIOBuffer::~DynIOBuffer() { + if (m_buf.data.ptr) { + free(m_buf.data.ptr); + } +} + +void // +DynIOBuffer::drop() { + if (m_buf.data.ptr) { + free(m_buf.data.ptr); + } + m_buf = wuffs_base__empty_io_buffer(); +} + +DynIOBuffer::GrowResult // +DynIOBuffer::grow(uint64_t min_incl) { + uint64_t n = round_up(min_incl, m_max_incl); + if (n == 0) { + return ((min_incl == 0) && (m_max_incl == 0)) + ? DynIOBuffer::GrowResult::OK + : DynIOBuffer::GrowResult::FailedMaxInclExceeded; + } else if (n > m_buf.data.len) { + uint8_t* ptr = static_cast<uint8_t*>(realloc(m_buf.data.ptr, n)); + if (!ptr) { + return DynIOBuffer::GrowResult::FailedOutOfMemory; + } + m_buf.data.ptr = ptr; + m_buf.data.len = n; + } + return DynIOBuffer::GrowResult::OK; +} + +// round_up rounds min_incl up, returning the smallest value x satisfying +// (min_incl <= x) and (x <= max_incl) and some other constraints. It returns 0 +// if there is no such x. +// +// When max_incl <= 4096, the other constraints are: +// - (x == max_incl) +// +// When max_incl > 4096, the other constraints are: +// - (x == max_incl) or (x is a power of 2) +// - (x >= 4096) +uint64_t // +DynIOBuffer::round_up(uint64_t min_incl, uint64_t max_incl) { + if (min_incl > max_incl) { + return 0; + } + uint64_t n = 4096; + if (n >= max_incl) { + return max_incl; + } + while (n < min_incl) { + if (n >= (max_incl / 2)) { + return max_incl; + } + n *= 2; + } + return n; +} + +// -------- + +Input::~Input() {} + +IOBuffer* // +Input::BringsItsOwnIOBuffer() { + return nullptr; +} + +// -------- + +FileInput::FileInput(FILE* f) : m_f(f) {} + +std::string // +FileInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) { + if (!m_f) { + return "wuffs_aux::sync_io::FileInput: nullptr file"; + } else if (!dst) { + return "wuffs_aux::sync_io::FileInput: nullptr IOBuffer"; + } else if (dst->meta.closed) { + return "wuffs_aux::sync_io::FileInput: end of file"; + } else { + dst->compact_retaining(history_retain_length); + size_t n = fread(dst->writer_pointer(), 1, dst->writer_length(), m_f); + dst->meta.wi += n; + dst->meta.closed = feof(m_f); + if (ferror(m_f)) { + return "wuffs_aux::sync_io::FileInput: error reading file"; + } + } + return ""; +} + +// -------- + +MemoryInput::MemoryInput(const char* ptr, size_t len) + : m_io(wuffs_base__ptr_u8__reader( + static_cast<uint8_t*>(static_cast<void*>(const_cast<char*>(ptr))), + len, + true)) {} + +MemoryInput::MemoryInput(const uint8_t* ptr, size_t len) + : m_io(wuffs_base__ptr_u8__reader(const_cast<uint8_t*>(ptr), len, true)) {} + +IOBuffer* // +MemoryInput::BringsItsOwnIOBuffer() { + return &m_io; +} + +std::string // +MemoryInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) { + if (!dst) { + return "wuffs_aux::sync_io::MemoryInput: nullptr IOBuffer"; + } else if (dst->meta.closed) { + return "wuffs_aux::sync_io::MemoryInput: end of file"; + } else if (wuffs_base__slice_u8__overlaps(dst->data, m_io.data)) { + // Treat m_io's data as immutable, so don't compact dst or otherwise write + // to it. + return "wuffs_aux::sync_io::MemoryInput: overlapping buffers"; + } else { + dst->compact_retaining(history_retain_length); + size_t nd = dst->writer_length(); + size_t ns = m_io.reader_length(); + size_t n = (nd < ns) ? nd : ns; + memcpy(dst->writer_pointer(), m_io.reader_pointer(), n); + m_io.meta.ri += n; + dst->meta.wi += n; + dst->meta.closed = m_io.reader_length() == 0; + } + return ""; +} + +// -------- + +} // namespace sync_io + +namespace private_impl { + +struct ErrorMessages { + const char* max_incl_metadata_length_exceeded; + const char* out_of_memory; + const char* unexpected_end_of_file; + const char* unsupported_metadata; + const char* unsupported_negative_advance; + + // If adding new "const char*" typed fields to this struct, either add them + // after existing fields or, if re-ordering fields, make sure that you update + // all of the "const private_impl::ErrorMessages FooBarErrorMessages" values + // in all of the sibling *.cc files. + + static inline const char* resolve(const char* s) { + return s ? s : "wuffs_aux::private_impl: unknown error"; + }; +}; + +std::string // +AdvanceIOBufferTo(const ErrorMessages& error_messages, + sync_io::Input& input, + IOBuffer& io_buf, + uint64_t absolute_position) { + if (absolute_position < io_buf.reader_position()) { + return error_messages.resolve(error_messages.unsupported_negative_advance); + } + while (true) { + uint64_t relative_position = absolute_position - io_buf.reader_position(); + if (relative_position <= io_buf.reader_length()) { + io_buf.meta.ri += (size_t)relative_position; + break; + } else if (io_buf.meta.closed) { + return error_messages.resolve(error_messages.unexpected_end_of_file); + } + io_buf.meta.ri = io_buf.meta.wi; + if (!input.BringsItsOwnIOBuffer()) { + io_buf.compact(); + } + std::string error_message = input.CopyIn(&io_buf, 0); + if (!error_message.empty()) { + return error_message; + } + } + return ""; +} + +std::string // +HandleMetadata( + const ErrorMessages& error_messages, + sync_io::Input& input, + wuffs_base__io_buffer& io_buf, + sync_io::DynIOBuffer& raw, + wuffs_base__status (*tell_me_more_func)(void*, + wuffs_base__io_buffer*, + wuffs_base__more_information*, + wuffs_base__io_buffer*), + void* tell_me_more_receiver, + std::string (*handle_metadata_func)(void*, + const wuffs_base__more_information*, + wuffs_base__slice_u8), + void* handle_metadata_receiver) { + wuffs_base__more_information minfo = wuffs_base__empty_more_information(); + // Reset raw but keep its backing array (the raw.m_buf.data slice). + raw.m_buf.meta = wuffs_base__empty_io_buffer_meta(); + + while (true) { + minfo = wuffs_base__empty_more_information(); + wuffs_base__status status = (*tell_me_more_func)( + tell_me_more_receiver, &raw.m_buf, &minfo, &io_buf); + switch (minfo.flavor) { + case 0: + case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM: + case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED: + break; + + case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH: { + wuffs_base__range_ie_u64 r = minfo.metadata_raw_passthrough__range(); + if (r.is_empty()) { + break; + } + uint64_t num_to_copy = r.length(); + if (num_to_copy > (raw.m_max_incl - raw.m_buf.meta.wi)) { + return error_messages.resolve( + error_messages.max_incl_metadata_length_exceeded); + } else if (num_to_copy > (raw.m_buf.data.len - raw.m_buf.meta.wi)) { + switch (raw.grow(num_to_copy + raw.m_buf.meta.wi)) { + case sync_io::DynIOBuffer::GrowResult::OK: + break; + case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded: + return error_messages.resolve( + error_messages.max_incl_metadata_length_exceeded); + case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory: + return error_messages.resolve(error_messages.out_of_memory); + } + } + + if (io_buf.reader_position() > r.min_incl) { + return error_messages.resolve(error_messages.unsupported_metadata); + } else { + std::string error_message = + AdvanceIOBufferTo(error_messages, input, io_buf, r.min_incl); + if (!error_message.empty()) { + return error_message; + } + } + + while (true) { + uint64_t n = + wuffs_base__u64__min(num_to_copy, io_buf.reader_length()); + memcpy(raw.m_buf.writer_pointer(), io_buf.reader_pointer(), n); + raw.m_buf.meta.wi += n; + io_buf.meta.ri += n; + num_to_copy -= n; + if (num_to_copy == 0) { + break; + } else if (io_buf.meta.closed) { + return error_messages.resolve( + error_messages.unexpected_end_of_file); + } else if (!input.BringsItsOwnIOBuffer()) { + io_buf.compact(); + } + std::string error_message = input.CopyIn(&io_buf, 0); + if (!error_message.empty()) { + return error_message; + } + } + break; + } + + default: + return error_messages.resolve(error_messages.unsupported_metadata); + } + + if (status.repr == nullptr) { + break; + } else if (status.repr != wuffs_base__suspension__even_more_information) { + if (status.repr != wuffs_base__suspension__short_write) { + return status.message(); + } + switch (raw.grow(wuffs_base__u64__sat_add(raw.m_buf.data.len, 1))) { + case sync_io::DynIOBuffer::GrowResult::OK: + break; + case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded: + return error_messages.resolve( + error_messages.max_incl_metadata_length_exceeded); + case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory: + return error_messages.resolve(error_messages.out_of_memory); + } + } + } + + return (*handle_metadata_func)(handle_metadata_receiver, &minfo, + raw.m_buf.reader_slice()); +} + +} // namespace private_impl + +} // namespace wuffs_aux + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__AUX__BASE) + +// ---------------- Auxiliary - CBOR + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__CBOR) + +#include <utility> + +namespace wuffs_aux { + +DecodeCborResult::DecodeCborResult(std::string&& error_message0, + uint64_t cursor_position0) + : error_message(std::move(error_message0)), + cursor_position(cursor_position0) {} + +DecodeCborCallbacks::~DecodeCborCallbacks() {} + +void // +DecodeCborCallbacks::Done(DecodeCborResult& result, + sync_io::Input& input, + IOBuffer& buffer) {} + +DecodeCborArgQuirks::DecodeCborArgQuirks(wuffs_base__slice_u32 repr0) + : repr(repr0) {} + +DecodeCborArgQuirks::DecodeCborArgQuirks(uint32_t* ptr0, size_t len0) + : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} + +DecodeCborArgQuirks // +DecodeCborArgQuirks::DefaultValue() { + return DecodeCborArgQuirks(wuffs_base__empty_slice_u32()); +} + +DecodeCborResult // +DecodeCbor(DecodeCborCallbacks& callbacks, + sync_io::Input& input, + DecodeCborArgQuirks quirks) { + // Prepare the wuffs_base__io_buffer and the resultant error_message. + wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); + wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); + std::unique_ptr<uint8_t[]> fallback_io_array(nullptr); + if (!io_buf) { + fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[4096]); + fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096); + io_buf = &fallback_io_buf; + } + // cursor_index is discussed at + // https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index + size_t cursor_index = 0; + std::string ret_error_message; + std::string io_error_message; + + do { + // Prepare the low-level CBOR decoder. + wuffs_cbor__decoder::unique_ptr dec = wuffs_cbor__decoder::alloc(); + if (!dec) { + ret_error_message = "wuffs_aux::DecodeCbor: out of memory"; + goto done; + } + for (size_t i = 0; i < quirks.repr.len; i++) { + dec->set_quirk(quirks.repr.ptr[i], 1); + } + + // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB. + wuffs_base__token tok_array[256]; + wuffs_base__token_buffer tok_buf = + wuffs_base__slice_token__writer(wuffs_base__make_slice_token( + &tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0])))); + wuffs_base__status tok_status = wuffs_base__make_status(nullptr); + + // Prepare other state. + int32_t depth = 0; + std::string str; + int64_t extension_category = 0; + uint64_t extension_detail = 0; + + // Valid token's VBCs range in 0 ..= 15. Values over that are for tokens + // from outside of the base package, such as the CBOR package. + constexpr int64_t EXT_CAT__CBOR_TAG = 16; + + // Loop, doing these two things: + // 1. Get the next token. + // 2. Process that token. + while (true) { + // 1. Get the next token. + + while (tok_buf.meta.ri >= tok_buf.meta.wi) { + if (tok_status.repr == nullptr) { + // No-op. + } else if (tok_status.repr == wuffs_base__suspension__short_write) { + tok_buf.compact(); + } else if (tok_status.repr == wuffs_base__suspension__short_read) { + // Read from input to io_buf. + if (!io_error_message.empty()) { + ret_error_message = std::move(io_error_message); + goto done; + } else if (cursor_index != io_buf->meta.ri) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad cursor_index"; + goto done; + } else if (io_buf->meta.closed) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: io_buf is closed"; + goto done; + } + io_buf->compact_retaining(dec->history_retain_length()); + if (io_buf->meta.wi >= io_buf->data.len) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: io_buf is full"; + goto done; + } + cursor_index = io_buf->meta.ri; + io_error_message = input.CopyIn(io_buf, dec->history_retain_length()); + } else { + ret_error_message = tok_status.message(); + goto done; + } + + if (WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad WORKBUF_LEN"; + goto done; + } + wuffs_base__slice_u8 work_buf = wuffs_base__empty_slice_u8(); + tok_status = dec->decode_tokens(&tok_buf, io_buf, work_buf); + if ((tok_buf.meta.ri > tok_buf.meta.wi) || + (tok_buf.meta.wi > tok_buf.data.len) || + (io_buf->meta.ri > io_buf->meta.wi) || + (io_buf->meta.wi > io_buf->data.len)) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad buffer indexes"; + goto done; + } + } + + wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++]; + uint64_t token_len = token.length(); + if ((io_buf->meta.ri < cursor_index) || + ((io_buf->meta.ri - cursor_index) < token_len)) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad token indexes"; + goto done; + } + uint8_t* token_ptr = io_buf->data.ptr + cursor_index; + cursor_index += static_cast<size_t>(token_len); + + // 2. Process that token. + + uint64_t vbd = token.value_base_detail(); + + if (extension_category != 0) { + int64_t ext = token.value_extension(); + if ((ext >= 0) && !token.continued()) { + extension_detail = (extension_detail + << WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS) | + static_cast<uint64_t>(ext); + switch (extension_category) { + case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED: + extension_category = 0; + ret_error_message = + callbacks.AppendI64(static_cast<int64_t>(extension_detail)); + goto parsed_a_value; + case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED: + extension_category = 0; + ret_error_message = callbacks.AppendU64(extension_detail); + goto parsed_a_value; + case EXT_CAT__CBOR_TAG: + extension_category = 0; + ret_error_message = callbacks.AppendCborTag(extension_detail); + if (!ret_error_message.empty()) { + goto done; + } + continue; + } + } + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad extended token"; + goto done; + } + + switch (token.value_base_category()) { + case WUFFS_BASE__TOKEN__VBC__FILLER: + continue; + + case WUFFS_BASE__TOKEN__VBC__STRUCTURE: { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { + ret_error_message = callbacks.Push(static_cast<uint32_t>(vbd)); + if (!ret_error_message.empty()) { + goto done; + } + depth++; + if (depth > WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad depth"; + goto done; + } + continue; + } + ret_error_message = callbacks.Pop(static_cast<uint32_t>(vbd)); + depth--; + if (depth < 0) { + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: bad depth"; + goto done; + } + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__STRING: { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { + // No-op. + } else if (vbd & + WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(token_ptr)); + str.append(ptr, static_cast<size_t>(token_len)); + } else { + goto fail; + } + if (token.continued()) { + continue; + } + ret_error_message = + (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8) + ? callbacks.AppendTextString(std::move(str)) + : callbacks.AppendByteString(std::move(str)); + str.clear(); + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { + uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; + size_t n = wuffs_base__utf_8__encode( + wuffs_base__make_slice_u8( + &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), + static_cast<uint32_t>(vbd)); + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(&u[0])); + str.append(ptr, n); + if (token.continued()) { + continue; + } + goto fail; + } + + case WUFFS_BASE__TOKEN__VBC__LITERAL: { + if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL) { + ret_error_message = callbacks.AppendNull(); + } else if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED) { + ret_error_message = callbacks.AppendUndefined(); + } else { + ret_error_message = callbacks.AppendBool( + vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE); + } + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__NUMBER: { + const uint64_t cfp_fbbe_fifb = + WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT | + WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN | + WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE; + if ((vbd & cfp_fbbe_fifb) == cfp_fbbe_fifb) { + double f; + switch (token_len) { + case 3: + f = wuffs_base__ieee_754_bit_representation__from_u16_to_f64( + wuffs_base__peek_u16be__no_bounds_check(token_ptr + 1)); + break; + case 5: + f = wuffs_base__ieee_754_bit_representation__from_u32_to_f64( + wuffs_base__peek_u32be__no_bounds_check(token_ptr + 1)); + break; + case 9: + f = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1)); + break; + default: + goto fail; + } + ret_error_message = callbacks.AppendF64(f); + goto parsed_a_value; + } + goto fail; + } + + case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED: { + if (token.continued()) { + extension_category = WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED; + extension_detail = + static_cast<uint64_t>(token.value_base_detail__sign_extended()); + continue; + } + ret_error_message = + callbacks.AppendI64(token.value_base_detail__sign_extended()); + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED: { + if (token.continued()) { + extension_category = + WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED; + extension_detail = vbd; + continue; + } + ret_error_message = callbacks.AppendU64(vbd); + goto parsed_a_value; + } + } + + if (token.value_major() == WUFFS_CBOR__TOKEN_VALUE_MAJOR) { + uint64_t value_minor = token.value_minor(); + if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X) { + if (token_len == 9) { + ret_error_message = callbacks.AppendMinus1MinusX( + wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1)); + goto parsed_a_value; + } + } else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE) { + ret_error_message = + callbacks.AppendCborSimpleValue(static_cast<uint8_t>( + value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK)); + goto parsed_a_value; + } else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG) { + if (token.continued()) { + extension_category = EXT_CAT__CBOR_TAG; + extension_detail = + value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK; + continue; + } + ret_error_message = callbacks.AppendCborTag( + value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK); + if (!ret_error_message.empty()) { + goto done; + } + continue; + } + } + + fail: + ret_error_message = + "wuffs_aux::DecodeCbor: internal error: unexpected token"; + goto done; + + parsed_a_value: + if (!ret_error_message.empty() || (depth == 0)) { + goto done; + } + } + } while (false); + +done: + DecodeCborResult result( + std::move(ret_error_message), + wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index)); + callbacks.Done(result, input, *io_buf); + return result; +} + +} // namespace wuffs_aux + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__AUX__CBOR) + +// ---------------- Auxiliary - Image + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__IMAGE) + +#include <utility> + +namespace wuffs_aux { + +DecodeImageResult::DecodeImageResult(MemOwner&& pixbuf_mem_owner0, + wuffs_base__pixel_buffer pixbuf0, + std::string&& error_message0) + : pixbuf_mem_owner(std::move(pixbuf_mem_owner0)), + pixbuf(pixbuf0), + error_message(std::move(error_message0)) {} + +DecodeImageResult::DecodeImageResult(std::string&& error_message0) + : pixbuf_mem_owner(nullptr, &free), + pixbuf(wuffs_base__null_pixel_buffer()), + error_message(std::move(error_message0)) {} + +DecodeImageCallbacks::~DecodeImageCallbacks() {} + +DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult( + MemOwner&& mem_owner0, + wuffs_base__pixel_buffer pixbuf0) + : mem_owner(std::move(mem_owner0)), pixbuf(pixbuf0), error_message("") {} + +DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult( + std::string&& error_message0) + : mem_owner(nullptr, &free), + pixbuf(wuffs_base__null_pixel_buffer()), + error_message(std::move(error_message0)) {} + +DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult( + MemOwner&& mem_owner0, + wuffs_base__slice_u8 workbuf0) + : mem_owner(std::move(mem_owner0)), workbuf(workbuf0), error_message("") {} + +DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult( + std::string&& error_message0) + : mem_owner(nullptr, &free), + workbuf(wuffs_base__empty_slice_u8()), + error_message(std::move(error_message0)) {} + +wuffs_base__image_decoder::unique_ptr // +DecodeImageCallbacks::SelectDecoder(uint32_t fourcc, + wuffs_base__slice_u8 prefix_data, + bool prefix_closed) { + switch (fourcc) { +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) + case WUFFS_BASE__FOURCC__BMP: + return wuffs_bmp__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) + case WUFFS_BASE__FOURCC__GIF: + return wuffs_gif__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) + case WUFFS_BASE__FOURCC__JPEG: + return wuffs_jpeg__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) + case WUFFS_BASE__FOURCC__NIE: + return wuffs_nie__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) + case WUFFS_BASE__FOURCC__NPBM: + return wuffs_netpbm__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) + case WUFFS_BASE__FOURCC__PNG: { + auto dec = wuffs_png__decoder::alloc_as__wuffs_base__image_decoder(); + // Favor faster decodes over rejecting invalid checksums. + dec->set_quirk(WUFFS_BASE__QUIRK_IGNORE_CHECKSUM, 1); + return dec; + } +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) + case WUFFS_BASE__FOURCC__TGA: + return wuffs_tga__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) + case WUFFS_BASE__FOURCC__WBMP: + return wuffs_wbmp__decoder::alloc_as__wuffs_base__image_decoder(); +#endif + } + + return wuffs_base__image_decoder::unique_ptr(nullptr); +} + +std::string // +DecodeImageCallbacks::HandleMetadata(const wuffs_base__more_information& minfo, + wuffs_base__slice_u8 raw) { + return ""; +} + +wuffs_base__pixel_format // +DecodeImageCallbacks::SelectPixfmt( + const wuffs_base__image_config& image_config) { + return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL); +} + +DecodeImageCallbacks::AllocPixbufResult // +DecodeImageCallbacks::AllocPixbuf(const wuffs_base__image_config& image_config, + bool allow_uninitialized_memory) { + uint32_t w = image_config.pixcfg.width(); + uint32_t h = image_config.pixcfg.height(); + if ((w == 0) || (h == 0)) { + return AllocPixbufResult(""); + } + uint64_t len = image_config.pixcfg.pixbuf_len(); + if ((len == 0) || (SIZE_MAX < len)) { + return AllocPixbufResult(DecodeImage_UnsupportedPixelConfiguration); + } + void* ptr = + allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1); + if (!ptr) { + return AllocPixbufResult(DecodeImage_OutOfMemory); + } + wuffs_base__pixel_buffer pixbuf; + wuffs_base__status status = pixbuf.set_from_slice( + &image_config.pixcfg, + wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len)); + if (!status.is_ok()) { + free(ptr); + return AllocPixbufResult(status.message()); + } + return AllocPixbufResult(MemOwner(ptr, &free), pixbuf); +} + +DecodeImageCallbacks::AllocWorkbufResult // +DecodeImageCallbacks::AllocWorkbuf(wuffs_base__range_ii_u64 len_range, + bool allow_uninitialized_memory) { + uint64_t len = len_range.max_incl; + if (len == 0) { + return AllocWorkbufResult(""); + } else if (SIZE_MAX < len) { + return AllocWorkbufResult(DecodeImage_OutOfMemory); + } + void* ptr = + allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1); + if (!ptr) { + return AllocWorkbufResult(DecodeImage_OutOfMemory); + } + return AllocWorkbufResult( + MemOwner(ptr, &free), + wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len)); +} + +void // +DecodeImageCallbacks::Done( + DecodeImageResult& result, + sync_io::Input& input, + IOBuffer& buffer, + wuffs_base__image_decoder::unique_ptr image_decoder) {} + +const char DecodeImage_BufferIsTooShort[] = // + "wuffs_aux::DecodeImage: buffer is too short"; +const char DecodeImage_MaxInclDimensionExceeded[] = // + "wuffs_aux::DecodeImage: max_incl_dimension exceeded"; +const char DecodeImage_MaxInclMetadataLengthExceeded[] = // + "wuffs_aux::DecodeImage: max_incl_metadata_length exceeded"; +const char DecodeImage_OutOfMemory[] = // + "wuffs_aux::DecodeImage: out of memory"; +const char DecodeImage_UnexpectedEndOfFile[] = // + "wuffs_aux::DecodeImage: unexpected end of file"; +const char DecodeImage_UnsupportedImageFormat[] = // + "wuffs_aux::DecodeImage: unsupported image format"; +const char DecodeImage_UnsupportedMetadata[] = // + "wuffs_aux::DecodeImage: unsupported metadata"; +const char DecodeImage_UnsupportedPixelBlend[] = // + "wuffs_aux::DecodeImage: unsupported pixel blend"; +const char DecodeImage_UnsupportedPixelConfiguration[] = // + "wuffs_aux::DecodeImage: unsupported pixel configuration"; +const char DecodeImage_UnsupportedPixelFormat[] = // + "wuffs_aux::DecodeImage: unsupported pixel format"; + +DecodeImageArgQuirks::DecodeImageArgQuirks(wuffs_base__slice_u32 repr0) + : repr(repr0) {} + +DecodeImageArgQuirks::DecodeImageArgQuirks(uint32_t* ptr0, size_t len0) + : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} + +DecodeImageArgQuirks // +DecodeImageArgQuirks::DefaultValue() { + return DecodeImageArgQuirks(wuffs_base__empty_slice_u32()); +} + +DecodeImageArgFlags::DecodeImageArgFlags(uint64_t repr0) : repr(repr0) {} + +DecodeImageArgFlags // +DecodeImageArgFlags::DefaultValue() { + return DecodeImageArgFlags(0); +} + +DecodeImageArgPixelBlend::DecodeImageArgPixelBlend( + wuffs_base__pixel_blend repr0) + : repr(repr0) {} + +DecodeImageArgPixelBlend // +DecodeImageArgPixelBlend::DefaultValue() { + return DecodeImageArgPixelBlend(WUFFS_BASE__PIXEL_BLEND__SRC); +} + +DecodeImageArgBackgroundColor::DecodeImageArgBackgroundColor( + wuffs_base__color_u32_argb_premul repr0) + : repr(repr0) {} + +DecodeImageArgBackgroundColor // +DecodeImageArgBackgroundColor::DefaultValue() { + return DecodeImageArgBackgroundColor(1); +} + +DecodeImageArgMaxInclDimension::DecodeImageArgMaxInclDimension(uint32_t repr0) + : repr(repr0) {} + +DecodeImageArgMaxInclDimension // +DecodeImageArgMaxInclDimension::DefaultValue() { + return DecodeImageArgMaxInclDimension(1048575); +} + +DecodeImageArgMaxInclMetadataLength::DecodeImageArgMaxInclMetadataLength( + uint64_t repr0) + : repr(repr0) {} + +DecodeImageArgMaxInclMetadataLength // +DecodeImageArgMaxInclMetadataLength::DefaultValue() { + return DecodeImageArgMaxInclMetadataLength(16777215); +} + +// -------- + +namespace { + +const private_impl::ErrorMessages DecodeImageErrorMessages = { + DecodeImage_MaxInclMetadataLengthExceeded, // + DecodeImage_OutOfMemory, // + DecodeImage_UnexpectedEndOfFile, // + DecodeImage_UnsupportedMetadata, // + DecodeImage_UnsupportedImageFormat, // +}; + +std::string // +DecodeImageAdvanceIOBufferTo(sync_io::Input& input, + wuffs_base__io_buffer& io_buf, + uint64_t absolute_position) { + return private_impl::AdvanceIOBufferTo(DecodeImageErrorMessages, input, + io_buf, absolute_position); +} + +wuffs_base__status // +DIHM0(void* self, + wuffs_base__io_buffer* a_dst, + wuffs_base__more_information* a_minfo, + wuffs_base__io_buffer* a_src) { + return wuffs_base__image_decoder__tell_me_more( + static_cast<wuffs_base__image_decoder*>(self), a_dst, a_minfo, a_src); +} + +std::string // +DIHM1(void* self, + const wuffs_base__more_information* minfo, + wuffs_base__slice_u8 raw) { + return static_cast<DecodeImageCallbacks*>(self)->HandleMetadata(*minfo, raw); +} + +std::string // +DecodeImageHandleMetadata(wuffs_base__image_decoder::unique_ptr& image_decoder, + DecodeImageCallbacks& callbacks, + sync_io::Input& input, + wuffs_base__io_buffer& io_buf, + sync_io::DynIOBuffer& raw_metadata_buf) { + return private_impl::HandleMetadata(DecodeImageErrorMessages, input, io_buf, + raw_metadata_buf, DIHM0, + static_cast<void*>(image_decoder.get()), + DIHM1, static_cast<void*>(&callbacks)); +} + +DecodeImageResult // +DecodeImage0(wuffs_base__image_decoder::unique_ptr& image_decoder, + DecodeImageCallbacks& callbacks, + sync_io::Input& input, + wuffs_base__io_buffer& io_buf, + wuffs_base__slice_u32 quirks, + uint64_t flags, + wuffs_base__pixel_blend pixel_blend, + wuffs_base__color_u32_argb_premul background_color, + uint32_t max_incl_dimension, + uint64_t max_incl_metadata_length) { + // Check args. + switch (pixel_blend) { + case WUFFS_BASE__PIXEL_BLEND__SRC: + case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: + break; + default: + return DecodeImageResult(DecodeImage_UnsupportedPixelBlend); + } + + wuffs_base__image_config image_config = wuffs_base__null_image_config(); + sync_io::DynIOBuffer raw_metadata_buf(max_incl_metadata_length); + uint64_t start_pos = io_buf.reader_position(); + bool interested_in_metadata_after_the_frame = false; + bool redirected = false; + int32_t fourcc = 0; +redirect: + do { + // Determine the image format. + if (!redirected) { + while (true) { + fourcc = wuffs_base__magic_number_guess_fourcc(io_buf.reader_slice(), + io_buf.meta.closed); + if (fourcc > 0) { + break; + } else if ((fourcc == 0) && (io_buf.reader_length() >= 64)) { + // Having (fourcc == 0) means that Wuffs' built in MIME sniffer + // didn't recognize the image format. Nonetheless, custom callbacks + // may still be able to do their own MIME sniffing, for exotic image + // types. We try to give them at least 64 bytes of prefix data when + // one-shot-calling callbacks.SelectDecoder. There is no mechanism + // for the callbacks to request a longer prefix. + break; + } else if (io_buf.meta.closed || (io_buf.writer_length() == 0)) { + fourcc = 0; + break; + } + std::string error_message = input.CopyIn(&io_buf, 0); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } + } else { + wuffs_base__io_buffer empty = wuffs_base__empty_io_buffer(); + wuffs_base__more_information minfo = wuffs_base__empty_more_information(); + wuffs_base__status tmm_status = + image_decoder->tell_me_more(&empty, &minfo, &io_buf); + if (tmm_status.repr != nullptr) { + return DecodeImageResult(tmm_status.message()); + } + if (minfo.flavor != WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT) { + return DecodeImageResult(DecodeImage_UnsupportedImageFormat); + } + uint64_t pos = minfo.io_redirect__range().min_incl; + if (pos <= start_pos) { + // Redirects must go forward. + return DecodeImageResult(DecodeImage_UnsupportedImageFormat); + } + std::string error_message = + DecodeImageAdvanceIOBufferTo(input, io_buf, pos); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + fourcc = (int32_t)(minfo.io_redirect__fourcc()); + if (fourcc == 0) { + return DecodeImageResult(DecodeImage_UnsupportedImageFormat); + } + image_decoder.reset(); + } + + // Select the image decoder. + image_decoder = callbacks.SelectDecoder( + (uint32_t)fourcc, io_buf.reader_slice(), io_buf.meta.closed); + if (!image_decoder) { + return DecodeImageResult(DecodeImage_UnsupportedImageFormat); + } + + // Apply quirks. + for (size_t i = 0; i < quirks.len; i++) { + image_decoder->set_quirk(quirks.ptr[i], 1); + } + + // Apply flags. + if (flags != 0) { + if (flags & DecodeImageArgFlags::REPORT_METADATA_CHRM) { + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__CHRM, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_EXIF) { + interested_in_metadata_after_the_frame = true; + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__EXIF, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_GAMA) { + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__GAMA, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_ICCP) { + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__ICCP, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_KVP) { + interested_in_metadata_after_the_frame = true; + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__KVP, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_SRGB) { + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__SRGB, true); + } + if (flags & DecodeImageArgFlags::REPORT_METADATA_XMP) { + interested_in_metadata_after_the_frame = true; + image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__XMP, true); + } + } + + // Decode the image config. + while (true) { + wuffs_base__status id_dic_status = + image_decoder->decode_image_config(&image_config, &io_buf); + if (id_dic_status.repr == nullptr) { + break; + } else if (id_dic_status.repr == wuffs_base__note__i_o_redirect) { + if (redirected) { + return DecodeImageResult(DecodeImage_UnsupportedImageFormat); + } + redirected = true; + goto redirect; + } else if (id_dic_status.repr == wuffs_base__note__metadata_reported) { + std::string error_message = DecodeImageHandleMetadata( + image_decoder, callbacks, input, io_buf, raw_metadata_buf); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } else if (id_dic_status.repr != wuffs_base__suspension__short_read) { + return DecodeImageResult(id_dic_status.message()); + } else if (io_buf.meta.closed) { + return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); + } else { + std::string error_message = + input.CopyIn(&io_buf, image_decoder->history_retain_length()); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } + } + } while (false); + if (!interested_in_metadata_after_the_frame) { + raw_metadata_buf.drop(); + } + + // Select the pixel format. + uint32_t w = image_config.pixcfg.width(); + uint32_t h = image_config.pixcfg.height(); + if ((w > max_incl_dimension) || (h > max_incl_dimension)) { + return DecodeImageResult(DecodeImage_MaxInclDimensionExceeded); + } + wuffs_base__pixel_format pixel_format = callbacks.SelectPixfmt(image_config); + if (pixel_format.repr != image_config.pixcfg.pixel_format().repr) { + switch (pixel_format.repr) { + case WUFFS_BASE__PIXEL_FORMAT__BGR_565: + case WUFFS_BASE__PIXEL_FORMAT__BGR: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: + case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGB: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: + case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: + break; + default: + return DecodeImageResult(DecodeImage_UnsupportedPixelFormat); + } + image_config.pixcfg.set(pixel_format.repr, + WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, w, h); + } + + // Allocate the pixel buffer. + bool valid_background_color = + wuffs_base__color_u32_argb_premul__is_valid(background_color); + DecodeImageCallbacks::AllocPixbufResult alloc_pixbuf_result = + callbacks.AllocPixbuf(image_config, valid_background_color); + if (!alloc_pixbuf_result.error_message.empty()) { + return DecodeImageResult(std::move(alloc_pixbuf_result.error_message)); + } + wuffs_base__pixel_buffer pixel_buffer = alloc_pixbuf_result.pixbuf; + if (valid_background_color) { + wuffs_base__status pb_scufr_status = pixel_buffer.set_color_u32_fill_rect( + pixel_buffer.pixcfg.bounds(), background_color); + if (pb_scufr_status.repr != nullptr) { + return DecodeImageResult(pb_scufr_status.message()); + } + } + + // Allocate the work buffer. Wuffs' decoders conventionally assume that this + // can be uninitialized memory. + wuffs_base__range_ii_u64 workbuf_len = image_decoder->workbuf_len(); + DecodeImageCallbacks::AllocWorkbufResult alloc_workbuf_result = + callbacks.AllocWorkbuf(workbuf_len, true); + if (!alloc_workbuf_result.error_message.empty()) { + return DecodeImageResult(std::move(alloc_workbuf_result.error_message)); + } else if (alloc_workbuf_result.workbuf.len < workbuf_len.min_incl) { + return DecodeImageResult(DecodeImage_BufferIsTooShort); + } + + // Decode the frame config. + wuffs_base__frame_config frame_config = wuffs_base__null_frame_config(); + while (true) { + wuffs_base__status id_dfc_status = + image_decoder->decode_frame_config(&frame_config, &io_buf); + if (id_dfc_status.repr == nullptr) { + break; + } else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) { + std::string error_message = DecodeImageHandleMetadata( + image_decoder, callbacks, input, io_buf, raw_metadata_buf); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } else if (id_dfc_status.repr != wuffs_base__suspension__short_read) { + return DecodeImageResult(id_dfc_status.message()); + } else if (io_buf.meta.closed) { + return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); + } else { + std::string error_message = + input.CopyIn(&io_buf, image_decoder->history_retain_length()); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } + } + + // Decode the frame (the pixels). + // + // From here on, always returns the pixel_buffer. If we get this far, we can + // still display a partial image, even if we encounter an error. + std::string message(""); + if ((pixel_blend == WUFFS_BASE__PIXEL_BLEND__SRC_OVER) && + frame_config.overwrite_instead_of_blend()) { + pixel_blend = WUFFS_BASE__PIXEL_BLEND__SRC; + } + while (true) { + wuffs_base__status id_df_status = + image_decoder->decode_frame(&pixel_buffer, &io_buf, pixel_blend, + alloc_workbuf_result.workbuf, nullptr); + if (id_df_status.repr == nullptr) { + break; + } else if (id_df_status.repr != wuffs_base__suspension__short_read) { + message = id_df_status.message(); + break; + } else if (io_buf.meta.closed) { + message = DecodeImage_UnexpectedEndOfFile; + break; + } else { + std::string error_message = + input.CopyIn(&io_buf, image_decoder->history_retain_length()); + if (!error_message.empty()) { + message = std::move(error_message); + break; + } + } + } + + // Decode any metadata after the frame. + if (interested_in_metadata_after_the_frame) { + while (true) { + wuffs_base__status id_dfc_status = + image_decoder->decode_frame_config(NULL, &io_buf); + if (id_dfc_status.repr == wuffs_base__note__end_of_data) { + break; + } else if (id_dfc_status.repr == nullptr) { + continue; + } else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) { + std::string error_message = DecodeImageHandleMetadata( + image_decoder, callbacks, input, io_buf, raw_metadata_buf); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } else if (id_dfc_status.repr != wuffs_base__suspension__short_read) { + return DecodeImageResult(id_dfc_status.message()); + } else if (io_buf.meta.closed) { + return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); + } else { + std::string error_message = + input.CopyIn(&io_buf, image_decoder->history_retain_length()); + if (!error_message.empty()) { + return DecodeImageResult(std::move(error_message)); + } + } + } + } + + return DecodeImageResult(std::move(alloc_pixbuf_result.mem_owner), + pixel_buffer, std::move(message)); +} + +} // namespace + +DecodeImageResult // +DecodeImage(DecodeImageCallbacks& callbacks, + sync_io::Input& input, + DecodeImageArgQuirks quirks, + DecodeImageArgFlags flags, + DecodeImageArgPixelBlend pixel_blend, + DecodeImageArgBackgroundColor background_color, + DecodeImageArgMaxInclDimension max_incl_dimension, + DecodeImageArgMaxInclMetadataLength max_incl_metadata_length) { + wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); + wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); + std::unique_ptr<uint8_t[]> fallback_io_array(nullptr); + if (!io_buf) { + fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[32768]); + fallback_io_buf = + wuffs_base__ptr_u8__writer(fallback_io_array.get(), 32768); + io_buf = &fallback_io_buf; + } + + wuffs_base__image_decoder::unique_ptr image_decoder(nullptr); + DecodeImageResult result = + DecodeImage0(image_decoder, callbacks, input, *io_buf, quirks.repr, + flags.repr, pixel_blend.repr, background_color.repr, + max_incl_dimension.repr, max_incl_metadata_length.repr); + callbacks.Done(result, input, *io_buf, std::move(image_decoder)); + return result; +} + +} // namespace wuffs_aux + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__AUX__IMAGE) + +// ---------------- Auxiliary - JSON + +#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__JSON) + +#include <utility> + +namespace wuffs_aux { + +DecodeJsonResult::DecodeJsonResult(std::string&& error_message0, + uint64_t cursor_position0) + : error_message(std::move(error_message0)), + cursor_position(cursor_position0) {} + +DecodeJsonCallbacks::~DecodeJsonCallbacks() {} + +void // +DecodeJsonCallbacks::Done(DecodeJsonResult& result, + sync_io::Input& input, + IOBuffer& buffer) {} + +const char DecodeJson_BadJsonPointer[] = // + "wuffs_aux::DecodeJson: bad JSON Pointer"; +const char DecodeJson_NoMatch[] = // + "wuffs_aux::DecodeJson: no match"; + +DecodeJsonArgQuirks::DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0) + : repr(repr0) {} + +DecodeJsonArgQuirks::DecodeJsonArgQuirks(uint32_t* ptr0, size_t len0) + : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} + +DecodeJsonArgQuirks // +DecodeJsonArgQuirks::DefaultValue() { + return DecodeJsonArgQuirks(wuffs_base__empty_slice_u32()); +} + +DecodeJsonArgJsonPointer::DecodeJsonArgJsonPointer(std::string repr0) + : repr(repr0) {} + +DecodeJsonArgJsonPointer // +DecodeJsonArgJsonPointer::DefaultValue() { + return DecodeJsonArgJsonPointer(std::string()); +} + +// -------- + +#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN \ + while (tok_buf.meta.ri >= tok_buf.meta.wi) { \ + if (tok_status.repr == nullptr) { \ + goto done; \ + } else if (tok_status.repr == wuffs_base__suspension__short_write) { \ + tok_buf.compact(); \ + } else if (tok_status.repr == wuffs_base__suspension__short_read) { \ + if (!io_error_message.empty()) { \ + ret_error_message = std::move(io_error_message); \ + goto done; \ + } else if (cursor_index != io_buf->meta.ri) { \ + ret_error_message = \ + "wuffs_aux::DecodeJson: internal error: bad cursor_index"; \ + goto done; \ + } else if (io_buf->meta.closed) { \ + ret_error_message = \ + "wuffs_aux::DecodeJson: internal error: io_buf is closed"; \ + goto done; \ + } \ + io_buf->compact_retaining(dec->history_retain_length()); \ + if (io_buf->meta.wi >= io_buf->data.len) { \ + ret_error_message = \ + "wuffs_aux::DecodeJson: internal error: io_buf is full"; \ + goto done; \ + } \ + cursor_index = io_buf->meta.ri; \ + io_error_message = input.CopyIn(io_buf, dec->history_retain_length()); \ + } else { \ + ret_error_message = tok_status.message(); \ + goto done; \ + } \ + tok_status = \ + dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); \ + if ((tok_buf.meta.ri > tok_buf.meta.wi) || \ + (tok_buf.meta.wi > tok_buf.data.len) || \ + (io_buf->meta.ri > io_buf->meta.wi) || \ + (io_buf->meta.wi > io_buf->data.len)) { \ + ret_error_message = \ + "wuffs_aux::DecodeJson: internal error: bad buffer indexes"; \ + goto done; \ + } \ + } \ + wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++]; \ + uint64_t token_len = token.length(); \ + if ((io_buf->meta.ri < cursor_index) || \ + ((io_buf->meta.ri - cursor_index) < token_len)) { \ + ret_error_message = \ + "wuffs_aux::DecodeJson: internal error: bad token indexes"; \ + goto done; \ + } \ + uint8_t* token_ptr = io_buf->data.ptr + cursor_index; \ + (void)(token_ptr); \ + cursor_index += static_cast<size_t>(token_len) + +// -------- + +namespace { + +// DecodeJson_SplitJsonPointer returns ("bar", 8) for ("/foo/bar/b~1z/qux", 5, +// etc). It returns a 0 size_t when s has invalid JSON Pointer syntax or i is +// out of bounds. +// +// The string returned is unescaped. If calling it again, this time with i=8, +// the "b~1z" substring would be returned as "b/z". +std::pair<std::string, size_t> // +DecodeJson_SplitJsonPointer(std::string& s, + size_t i, + bool allow_tilde_n_tilde_r_tilde_t) { + std::string fragment; + if (i > s.size()) { + return std::make_pair(std::string(), 0); + } + while (i < s.size()) { + char c = s[i]; + if (c == '/') { + break; + } else if (c != '~') { + fragment.push_back(c); + i++; + continue; + } + i++; + if (i >= s.size()) { + return std::make_pair(std::string(), 0); + } + c = s[i]; + if (c == '0') { + fragment.push_back('~'); + i++; + continue; + } else if (c == '1') { + fragment.push_back('/'); + i++; + continue; + } else if (allow_tilde_n_tilde_r_tilde_t) { + if (c == 'n') { + fragment.push_back('\n'); + i++; + continue; + } else if (c == 'r') { + fragment.push_back('\r'); + i++; + continue; + } else if (c == 't') { + fragment.push_back('\t'); + i++; + continue; + } + } + return std::make_pair(std::string(), 0); + } + return std::make_pair(std::move(fragment), i); +} + +// -------- + +std::string // +DecodeJson_WalkJsonPointerFragment(wuffs_base__token_buffer& tok_buf, + wuffs_base__status& tok_status, + wuffs_json__decoder::unique_ptr& dec, + wuffs_base__io_buffer* io_buf, + std::string& io_error_message, + size_t& cursor_index, + sync_io::Input& input, + std::string& json_pointer_fragment) { + std::string ret_error_message; + while (true) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) { + continue; + } else if ((vbc != WUFFS_BASE__TOKEN__VBC__STRUCTURE) || + !(vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH)) { + return DecodeJson_NoMatch; + } else if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST) { + goto do_list; + } + goto do_dict; + } + +do_dict: + // Alternate between these two things: + // 1. Decode the next dict key (a string). If it matches the fragment, we're + // done (success). If we've reached the dict's end (VBD__STRUCTURE__POP) + // so that there was no next dict key, we're done (failure). + // 2. Otherwise, skip the next dict value. + while (true) { + for (std::string str; true;) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + switch (vbc) { + case WUFFS_BASE__TOKEN__VBC__FILLER: + continue; + + case WUFFS_BASE__TOKEN__VBC__STRUCTURE: + if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { + goto fail; + } + return DecodeJson_NoMatch; + + case WUFFS_BASE__TOKEN__VBC__STRING: { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { + // No-op. + } else if (vbd & + WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(token_ptr)); + str.append(ptr, static_cast<size_t>(token_len)); + } else { + goto fail; + } + break; + } + + case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { + uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; + size_t n = wuffs_base__utf_8__encode( + wuffs_base__make_slice_u8( + &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), + static_cast<uint32_t>(vbd)); + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(&u[0])); + str.append(ptr, n); + break; + } + + default: + goto fail; + } + + if (token.continued()) { + continue; + } + if (str == json_pointer_fragment) { + return ""; + } + goto skip_the_next_dict_value; + } + + skip_the_next_dict_value: + for (uint32_t skip_depth = 0; true;) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) { + continue; + } else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { + skip_depth++; + continue; + } + skip_depth--; + } + + if (skip_depth == 0) { + break; + } + } // skip_the_next_dict_value + } // do_dict + +do_list: + do { + wuffs_base__result_u64 result_u64 = wuffs_base__parse_number_u64( + wuffs_base__make_slice_u8( + static_cast<uint8_t*>(static_cast<void*>( + const_cast<char*>(json_pointer_fragment.data()))), + json_pointer_fragment.size()), + WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); + if (!result_u64.status.is_ok()) { + return DecodeJson_NoMatch; + } + uint64_t remaining = result_u64.value; + if (remaining == 0) { + goto check_that_a_value_follows; + } + for (uint32_t skip_depth = 0; true;) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) { + continue; + } else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { + skip_depth++; + continue; + } + if (skip_depth == 0) { + return DecodeJson_NoMatch; + } + skip_depth--; + } + + if (skip_depth > 0) { + continue; + } + remaining--; + if (remaining == 0) { + goto check_that_a_value_follows; + } + } + } while (false); // do_list + +check_that_a_value_follows: + while (true) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) { + continue; + } + + // Undo the last part of WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN, so + // that we're only peeking at the next token. + tok_buf.meta.ri--; + cursor_index -= static_cast<size_t>(token_len); + + if ((vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) && + (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP)) { + return DecodeJson_NoMatch; + } + return ""; + } // check_that_a_value_follows + +fail: + return "wuffs_aux::DecodeJson: internal error: unexpected token"; +done: + return ret_error_message; +} + +} // namespace + +// -------- + +DecodeJsonResult // +DecodeJson(DecodeJsonCallbacks& callbacks, + sync_io::Input& input, + DecodeJsonArgQuirks quirks, + DecodeJsonArgJsonPointer json_pointer) { + // Prepare the wuffs_base__io_buffer and the resultant error_message. + wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); + wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); + std::unique_ptr<uint8_t[]> fallback_io_array(nullptr); + if (!io_buf) { + fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[4096]); + fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096); + io_buf = &fallback_io_buf; + } + // cursor_index is discussed at + // https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index + size_t cursor_index = 0; + std::string ret_error_message; + std::string io_error_message; + + do { + // Prepare the low-level JSON decoder. + wuffs_json__decoder::unique_ptr dec = wuffs_json__decoder::alloc(); + if (!dec) { + ret_error_message = "wuffs_aux::DecodeJson: out of memory"; + goto done; + } else if (WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) { + ret_error_message = + "wuffs_aux::DecodeJson: internal error: bad WORKBUF_LEN"; + goto done; + } + bool allow_tilde_n_tilde_r_tilde_t = false; + for (size_t i = 0; i < quirks.repr.len; i++) { + dec->set_quirk(quirks.repr.ptr[i], 1); + if (quirks.repr.ptr[i] == + WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T) { + allow_tilde_n_tilde_r_tilde_t = true; + } + } + + // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB. + wuffs_base__token tok_array[256]; + wuffs_base__token_buffer tok_buf = + wuffs_base__slice_token__writer(wuffs_base__make_slice_token( + &tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0])))); + wuffs_base__status tok_status = + dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); + + // Prepare other state. + int32_t depth = 0; + std::string str; + + // Walk the (optional) JSON Pointer. + for (size_t i = 0; i < json_pointer.repr.size();) { + if (json_pointer.repr[i] != '/') { + ret_error_message = DecodeJson_BadJsonPointer; + goto done; + } + std::pair<std::string, size_t> split = DecodeJson_SplitJsonPointer( + json_pointer.repr, i + 1, allow_tilde_n_tilde_r_tilde_t); + i = split.second; + if (i == 0) { + ret_error_message = DecodeJson_BadJsonPointer; + goto done; + } + ret_error_message = DecodeJson_WalkJsonPointerFragment( + tok_buf, tok_status, dec, io_buf, io_error_message, cursor_index, + input, split.first); + if (!ret_error_message.empty()) { + goto done; + } + } + + // Loop, doing these two things: + // 1. Get the next token. + // 2. Process that token. + while (true) { + WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; + + int64_t vbc = token.value_base_category(); + uint64_t vbd = token.value_base_detail(); + switch (vbc) { + case WUFFS_BASE__TOKEN__VBC__FILLER: + continue; + + case WUFFS_BASE__TOKEN__VBC__STRUCTURE: { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { + ret_error_message = callbacks.Push(static_cast<uint32_t>(vbd)); + if (!ret_error_message.empty()) { + goto done; + } + depth++; + if (depth > WUFFS_JSON__DECODER_DEPTH_MAX_INCL) { + ret_error_message = + "wuffs_aux::DecodeJson: internal error: bad depth"; + goto done; + } + continue; + } + ret_error_message = callbacks.Pop(static_cast<uint32_t>(vbd)); + depth--; + if (depth < 0) { + ret_error_message = + "wuffs_aux::DecodeJson: internal error: bad depth"; + goto done; + } + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__STRING: { + if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { + // No-op. + } else if (vbd & + WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(token_ptr)); + str.append(ptr, static_cast<size_t>(token_len)); + } else { + goto fail; + } + if (token.continued()) { + continue; + } + ret_error_message = callbacks.AppendTextString(std::move(str)); + str.clear(); + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { + uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; + size_t n = wuffs_base__utf_8__encode( + wuffs_base__make_slice_u8( + &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), + static_cast<uint32_t>(vbd)); + const char* ptr = // Convert from (uint8_t*). + static_cast<const char*>(static_cast<void*>(&u[0])); + str.append(ptr, n); + if (token.continued()) { + continue; + } + goto fail; + } + + case WUFFS_BASE__TOKEN__VBC__LITERAL: { + ret_error_message = + (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL) + ? callbacks.AppendNull() + : callbacks.AppendBool(vbd & + WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE); + goto parsed_a_value; + } + + case WUFFS_BASE__TOKEN__VBC__NUMBER: { + if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT) { + if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED) { + wuffs_base__result_i64 r = wuffs_base__parse_number_i64( + wuffs_base__make_slice_u8(token_ptr, + static_cast<size_t>(token_len)), + WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); + if (r.status.is_ok()) { + ret_error_message = callbacks.AppendI64(r.value); + goto parsed_a_value; + } + } + if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT) { + wuffs_base__result_f64 r = wuffs_base__parse_number_f64( + wuffs_base__make_slice_u8(token_ptr, + static_cast<size_t>(token_len)), + WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); + if (r.status.is_ok()) { + ret_error_message = callbacks.AppendF64(r.value); + goto parsed_a_value; + } + } + } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF) { + ret_error_message = callbacks.AppendF64( + wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + 0xFFF0000000000000ul)); + goto parsed_a_value; + } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF) { + ret_error_message = callbacks.AppendF64( + wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + 0x7FF0000000000000ul)); + goto parsed_a_value; + } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN) { + ret_error_message = callbacks.AppendF64( + wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + 0xFFFFFFFFFFFFFFFFul)); + goto parsed_a_value; + } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN) { + ret_error_message = callbacks.AppendF64( + wuffs_base__ieee_754_bit_representation__from_u64_to_f64( + 0x7FFFFFFFFFFFFFFFul)); + goto parsed_a_value; + } + goto fail; + } + } + + fail: + ret_error_message = + "wuffs_aux::DecodeJson: internal error: unexpected token"; + goto done; + + parsed_a_value: + // If an error was encountered, we are done. Otherwise, (depth == 0) + // after parsing a value is equivalent to having decoded the entire JSON + // value (for an empty json_pointer query) or having decoded the + // pointed-to JSON value (for a non-empty json_pointer query). In the + // latter case, we are also done. + // + // However, if quirks like WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER or + // WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF are passed, decoding + // the entire JSON value should also consume any trailing filler, in case + // the DecodeJson caller wants to subsequently check that the input is + // completely exhausted (and otherwise raise "valid JSON followed by + // further (unexpected) data"). We aren't done yet. Instead, keep the + // loop running until WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN's + // decode_tokens returns an ok status. + if (!ret_error_message.empty() || + ((depth == 0) && !json_pointer.repr.empty())) { + goto done; + } + } + } while (false); + +done: + DecodeJsonResult result( + std::move(ret_error_message), + wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index)); + callbacks.Done(result, input, *io_buf); + return result; +} + +#undef WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN + +} // namespace wuffs_aux + +#endif // !defined(WUFFS_CONFIG__MODULES) || + // defined(WUFFS_CONFIG__MODULE__AUX__JSON) + +#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) + +#endif // WUFFS_IMPLEMENTATION + +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#elif defined(__clang__) +#pragma clang diagnostic pop +#endif + +#endif // WUFFS_INCLUDE_GUARD |