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/*
*
* Copyright 2009, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_BUFFER_ALLOCATOR_H
#define ANDROID_BUFFER_ALLOCATOR_H
#include <stdint.h>
#include <memory>
#include <string>
#include <cutils/native_handle.h>
#include <ui/PixelFormat.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/Mutex.h>
#include <utils/Singleton.h>
namespace android {
class GrallocAllocator;
class GraphicBufferMapper;
class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator>
{
public:
static inline GraphicBufferAllocator& get() { return getInstance(); }
/**
* Allocates and imports a gralloc buffer.
*
* The handle must be freed with GraphicBufferAllocator::free() when no longer needed.
*/
status_t allocate(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
std::string requestorName);
/**
* Allocates and does NOT import a gralloc buffer. Buffers cannot be used until they have
* been imported. This function is for advanced use cases only.
*
* The raw native handle must be freed by calling native_handle_close() followed by
* native_handle_delete().
*/
status_t allocateRawHandle(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
std::string requestorName);
/**
* DEPRECATED: GraphicBufferAllocator does not use the graphicBufferId.
*/
status_t allocate(uint32_t w, uint32_t h, PixelFormat format,
uint32_t layerCount, uint64_t usage,
buffer_handle_t* handle, uint32_t* stride, uint64_t graphicBufferId,
std::string requestorName);
status_t free(buffer_handle_t handle);
uint64_t getTotalSize() const;
void dump(std::string& res, bool less = true) const;
static void dumpToSystemLog(bool less = true);
protected:
struct alloc_rec_t {
uint32_t width;
uint32_t height;
uint32_t stride;
PixelFormat format;
uint32_t layerCount;
uint64_t usage;
size_t size;
std::string requestorName;
};
status_t allocateHelper(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
std::string requestorName, bool importBuffer);
static Mutex sLock;
static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
friend class Singleton<GraphicBufferAllocator>;
GraphicBufferAllocator();
~GraphicBufferAllocator();
GraphicBufferMapper& mMapper;
std::unique_ptr<const GrallocAllocator> mAllocator;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_BUFFER_ALLOCATOR_H
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