2 * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57
4 * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
5 * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
7 * Copyright (C) 1999-2005 Igor Pavlov
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * LZMA_Alone stream format:
32 * uint64 Uncompressed size
42 #define LZMA_PROPERTIES_OFFSET 0
43 #define LZMA_SIZE_OFFSET LZMA_PROPERTIES_SIZE
44 #define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
46 #include "LzmaTools.h"
47 #include "LzmaDecode.h"
49 #include <linux/string.h>
52 int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
53 unsigned char *inStream, SizeT length)
55 int res = LZMA_RESULT_DATA_ERROR;
58 SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
63 CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
64 unsigned char properties[LZMA_PROPERTIES_SIZE];
65 SizeT compressedSize = (SizeT)(length - LZMA_DATA_OFFSET);
67 debug ("LZMA: Image address............... 0x%lx\n", inStream);
68 debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET);
69 debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET);
70 debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET);
71 debug ("LZMA: Destination address......... 0x%lx\n", outStream);
73 memcpy(properties, inStream + LZMA_PROPERTIES_OFFSET, LZMA_PROPERTIES_SIZE);
75 memset(&state, 0, sizeof(state));
76 res = LzmaDecodeProperties(&state.Properties,
78 LZMA_PROPERTIES_SIZE);
79 if (res != LZMA_RESULT_OK) {
85 /* Read the uncompressed size */
86 for (i = 0; i < 8; i++) {
87 unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
89 outSize += (UInt32)(b) << (i * 8);
91 outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
95 outSizeFull = (SizeT)outSize;
96 if (sizeof(SizeT) >= 8) {
98 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
101 outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
102 } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
104 * SizeT is a 32 bit uint => We cannot manage files larger than
108 debug ("LZMA: 64bit support not enabled.\n");
109 return LZMA_RESULT_DATA_ERROR;
112 debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);
113 debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize);
114 debug ("LZMA: Dynamic memory needed....... 0x%lx", LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
116 state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
119 || (outStream == 0 && outSizeFull != 0)
120 || (inStream == 0 && compressedSize != 0)) {
123 return LZMA_RESULT_DATA_ERROR;
126 debug (" allocated.\n");
130 res = LzmaDecode(&state,
131 inStream + LZMA_DATA_OFFSET, compressedSize, &inProcessed,
132 outStream, outSizeFull, &outProcessed);
133 if (res != LZMA_RESULT_OK) {
137 *uncompressedSize = outProcessed;