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fc9c1727b5
Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
143 lines
4.1 KiB
C
143 lines
4.1 KiB
C
/*
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* Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57
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*
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* Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
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* Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
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*
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* Copyright (C) 1999-2005 Igor Pavlov
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* LZMA_Alone stream format:
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*
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* uchar Properties[5]
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* uint64 Uncompressed size
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* uchar data[*]
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*
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*/
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#include <config.h>
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#include <common.h>
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#ifdef CONFIG_LZMA
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#define LZMA_PROPERTIES_OFFSET 0
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#define LZMA_SIZE_OFFSET LZMA_PROPERTIES_SIZE
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#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
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#include "LzmaTools.h"
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#include "LzmaDecode.h"
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#include <linux/string.h>
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#include <malloc.h>
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int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
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unsigned char *inStream, SizeT length)
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{
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int res = LZMA_RESULT_DATA_ERROR;
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int i;
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SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
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SizeT inProcessed;
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SizeT outProcessed;
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SizeT outSize;
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SizeT outSizeHigh;
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CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
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unsigned char properties[LZMA_PROPERTIES_SIZE];
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SizeT compressedSize = (SizeT)(length - LZMA_DATA_OFFSET);
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debug ("LZMA: Image address............... 0x%lx\n", inStream);
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debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET);
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debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET);
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debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET);
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debug ("LZMA: Destination address......... 0x%lx\n", outStream);
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memcpy(properties, inStream + LZMA_PROPERTIES_OFFSET, LZMA_PROPERTIES_SIZE);
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memset(&state, 0, sizeof(state));
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res = LzmaDecodeProperties(&state.Properties,
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properties,
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LZMA_PROPERTIES_SIZE);
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if (res != LZMA_RESULT_OK) {
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return res;
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}
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outSize = 0;
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outSizeHigh = 0;
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/* Read the uncompressed size */
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for (i = 0; i < 8; i++) {
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unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
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if (i < 4) {
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outSize += (UInt32)(b) << (i * 8);
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} else {
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outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
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}
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}
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outSizeFull = (SizeT)outSize;
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if (sizeof(SizeT) >= 8) {
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/*
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* SizeT is a 64 bit uint => We can manage files larger than 4GB!
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*
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*/
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outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
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} else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
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/*
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* SizeT is a 32 bit uint => We cannot manage files larger than
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* 4GB!
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*
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*/
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debug ("LZMA: 64bit support not enabled.\n");
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return LZMA_RESULT_DATA_ERROR;
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}
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debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);
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debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize);
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debug ("LZMA: Dynamic memory needed....... 0x%lx", LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
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state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
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if (state.Probs == 0
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|| (outStream == 0 && outSizeFull != 0)
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|| (inStream == 0 && compressedSize != 0)) {
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free(state.Probs);
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debug ("\n");
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return LZMA_RESULT_DATA_ERROR;
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}
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debug (" allocated.\n");
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/* Decompress */
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res = LzmaDecode(&state,
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inStream + LZMA_DATA_OFFSET, compressedSize, &inProcessed,
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outStream, outSizeFull, &outProcessed);
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if (res != LZMA_RESULT_OK) {
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return res;
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}
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*uncompressedSize = outProcessed;
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free(state.Probs);
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return res;
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}
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#endif
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