mirror of https://github.com/acidanthera/audk.git
145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/** @file
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LZMA Decompress routines for edk2
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Portions based on LZMA SDK 4.65:
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LzmaUtil.c -- Test application for LZMA compression
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2008-11-23 : Igor Pavlov : Public domain
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Copyright (c) 2006 - 2009, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiDecompressLib.h>
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#include <Library/ExtractGuidedSectionLib.h>
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#include <Guid/LzmaDecompress.h>
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#include "Sdk/C/Types.h"
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#include "Sdk/C/7zVersion.h"
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#include "Sdk/C/LzmaDec.h"
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extern ISzAlloc g_Alloc;
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#define LZMA_HEADER_SIZE (LZMA_PROPS_SIZE + 8)
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STATIC
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UINT64
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GetDecodedSizeOfBuf(
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UINT8 *encodedData
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)
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{
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UINT64 DecodedSize;
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INTN Index;
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/* Parse header */
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DecodedSize = 0;
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for (Index = LZMA_PROPS_SIZE + 7; Index >= LZMA_PROPS_SIZE; Index--)
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DecodedSize = LShiftU64(DecodedSize, 8) + encodedData[Index];
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return DecodedSize;
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}
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//
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// LZMA functions and data as defined in local LzmaDecompress.h
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//
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STATIC CONST VOID *mSourceLastUsedWithGetInfo;
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STATIC UINT32 mSizeOfLastSource;
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STATIC UINT32 mDecompressedSizeForLastSource;
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/**
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The internal implementation of *_DECOMPRESS_PROTOCOL.GetInfo().
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@param Source The source buffer containing the compressed data.
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@param SourceSize The size of source buffer
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@param DestinationSize The size of destination buffer.
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@param ScratchSize The size of scratch buffer.
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@retval RETURN_SUCCESS - The size of destination buffer and the size of scratch buffer are successull retrieved.
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@retval RETURN_INVALID_PARAMETER - The source data is corrupted
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**/
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RETURN_STATUS
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EFIAPI
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LzmaUefiDecompressGetInfo (
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IN CONST VOID *Source,
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IN UINT32 SourceSize,
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OUT UINT32 *DestinationSize,
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OUT UINT32 *ScratchSize
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)
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{
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UInt64 DecodedSize;
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ASSERT(SourceSize >= LZMA_HEADER_SIZE);
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DecodedSize = GetDecodedSizeOfBuf((UINT8*)Source);
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mSourceLastUsedWithGetInfo = Source;
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mSizeOfLastSource = SourceSize;
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mDecompressedSizeForLastSource = (UInt32)DecodedSize;
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*DestinationSize = mDecompressedSizeForLastSource;
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*ScratchSize = 0x10;
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return RETURN_SUCCESS;
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}
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/**
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The internal implementation of *_DECOMPRESS_PROTOCOL.Decompress().
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@param Source - The source buffer containing the compressed data.
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@param Destination - The destination buffer to store the decompressed data
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@param Scratch - The buffer used internally by the decompress routine. This buffer is needed to store intermediate data.
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@retval RETURN_SUCCESS - Decompression is successfull
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@retval RETURN_INVALID_PARAMETER - The source data is corrupted
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**/
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RETURN_STATUS
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EFIAPI
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LzmaUefiDecompress (
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IN CONST VOID *Source,
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IN OUT VOID *Destination,
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IN OUT VOID *Scratch
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)
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{
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SRes lzmaResult;
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ELzmaStatus status;
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SizeT decodedBufSize;
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SizeT encodedDataSize;
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if (Source != mSourceLastUsedWithGetInfo) {
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return RETURN_INVALID_PARAMETER;
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}
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decodedBufSize = (SizeT)mDecompressedSizeForLastSource;
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encodedDataSize = (SizeT)(mSizeOfLastSource - LZMA_HEADER_SIZE);
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lzmaResult = LzmaDecode(
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Destination,
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&decodedBufSize,
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(Byte*)((UINT8*)Source + LZMA_HEADER_SIZE),
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&encodedDataSize,
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Source,
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LZMA_PROPS_SIZE,
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LZMA_FINISH_END,
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&status,
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&g_Alloc
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);
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if (lzmaResult == SZ_OK) {
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return RETURN_SUCCESS;
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} else {
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return RETURN_INVALID_PARAMETER;
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}
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}
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