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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/UefiDecompressLib.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/UefiDecompressLib.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/UefiDecompressLib.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/UefiDecompressLib.h new file mode 100644 index 0000000000..2a7a91e5c1 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/UefiDecompressLib.h @@ -0,0 +1,108 @@ +/** @file + Provides services to decompress a buffer using the UEFI Decompress algorithm. + + The UEFI Decompress Library enables the decompression of objects that + were compressed using the UEFI compression scheme. The UEFI Decompress + Library is independent of environment and requires the caller to allocate + all required memory buffers. + +Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> +This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which accompanies this distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef __UEFI_DECPOMPRESS_LIB_H__ +#define __UEFI_DECPOMPRESS_LIB_H__ + +/** + Given a compressed source buffer, this function retrieves the size of + the uncompressed buffer and the size of the scratch buffer required + to decompress the compressed source buffer. + + Retrieves the size of the uncompressed buffer and the temporary scratch buffer + required to decompress the buffer specified by Source and SourceSize. + If the size of the uncompressed buffer or the size of the scratch buffer cannot + be determined from the compressed data specified by Source and SourceData, + then RETURN_INVALID_PARAMETER is returned. Otherwise, the size of the uncompressed + buffer is returned in DestinationSize, the size of the scratch buffer is returned + in ScratchSize, and RETURN_SUCCESS is returned. + This function does not have scratch buffer available to perform a thorough + checking of the validity of the source data. It just retrieves the "Original Size" + field from the beginning bytes of the source data and output it as DestinationSize. + And ScratchSize is specific to the decompression implementation. + + If Source is NULL, then ASSERT(). + If DestinationSize is NULL, then ASSERT(). + If ScratchSize is NULL, then ASSERT(). + + @param Source The source buffer containing the compressed data. + @param SourceSize The size, in bytes, of the source buffer. + @param DestinationSize A pointer to the size, in bytes, of the uncompressed buffer + that will be generated when the compressed buffer specified + by Source and SourceSize is decompressed. + @param ScratchSize A pointer to the size, in bytes, of the scratch buffer that + is required to decompress the compressed buffer specified + by Source and SourceSize. + + @retval RETURN_SUCCESS The size of the uncompressed data was returned + in DestinationSize and the size of the scratch + buffer was returned in ScratchSize. + @retval RETURN_INVALID_PARAMETER + The size of the uncompressed data or the size of + the scratch buffer cannot be determined from + the compressed data specified by Source + and SourceSize. +**/ +RETURN_STATUS +EFIAPI +UefiDecompressGetInfo ( + IN CONST VOID *Source, + IN UINT32 SourceSize, + OUT UINT32 *DestinationSize, + OUT UINT32 *ScratchSize + ); + +/** + Decompresses a compressed source buffer. + + Extracts decompressed data to its original form. + This function is designed so that the decompression algorithm can be implemented + without using any memory services. As a result, this function is not allowed to + call any memory allocation services in its implementation. It is the caller's + responsibility to allocate and free the Destination and Scratch buffers. + If the compressed source data specified by Source is successfully decompressed + into Destination, then RETURN_SUCCESS is returned. If the compressed source data + specified by Source is not in a valid compressed data format, + then RETURN_INVALID_PARAMETER is returned. + + If Source is NULL, then ASSERT(). + If Destination is NULL, then ASSERT(). + If the required scratch buffer size > 0 and Scratch is NULL, then ASSERT(). + + @param Source The source buffer containing the compressed data. + @param Destination The destination buffer to store the decompressed data + @param Scratch A temporary scratch buffer that is used to perform the decompression. + This is an optional parameter that may be NULL if the + required scratch buffer size is 0. + + @retval RETURN_SUCCESS Decompression completed successfully, and + the uncompressed buffer is returned in Destination. + @retval RETURN_INVALID_PARAMETER + The source buffer specified by Source is corrupted + (not in a valid compressed format). +**/ +RETURN_STATUS +EFIAPI +UefiDecompress ( + IN CONST VOID *Source, + IN OUT VOID *Destination, + IN OUT VOID *Scratch OPTIONAL + ); + +#endif |