u-boot/lib_generic/lzma/LzmaTools.c

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