]>
git.ipfire.org Git - people/ms/u-boot.git/blob - lib_generic/lzma/LzmaTools.c
2 * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65
4 * Copyright (C) 2007-2009 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
43 #define LZMA_PROPERTIES_OFFSET 0
44 #define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
45 #define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
47 #include "LzmaTools.h"
50 #include <linux/string.h>
53 static void *SzAlloc(void *p
, size_t size
) { p
= p
; return malloc(size
); }
54 static void SzFree(void *p
, void *address
) { p
= p
; free(address
); }
56 int lzmaBuffToBuffDecompress (unsigned char *outStream
, SizeT
*uncompressedSize
,
57 unsigned char *inStream
, SizeT length
)
59 int res
= SZ_ERROR_DATA
;
63 SizeT outSizeFull
= 0xFFFFFFFF; /* 4GBytes limit */
68 SizeT compressedSize
= (SizeT
)(length
- LZMA_PROPS_SIZE
);
70 debug ("LZMA: Image address............... 0x%lx\n", inStream
);
71 debug ("LZMA: Properties address.......... 0x%lx\n", inStream
+ LZMA_PROPERTIES_OFFSET
);
72 debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream
+ LZMA_SIZE_OFFSET
);
73 debug ("LZMA: Compressed data address..... 0x%lx\n", inStream
+ LZMA_DATA_OFFSET
);
74 debug ("LZMA: Destination address......... 0x%lx\n", outStream
);
76 memset(&state
, 0, sizeof(state
));
80 /* Read the uncompressed size */
81 for (i
= 0; i
< 8; i
++) {
82 unsigned char b
= inStream
[LZMA_SIZE_OFFSET
+ i
];
84 outSize
+= (UInt32
)(b
) << (i
* 8);
86 outSizeHigh
+= (UInt32
)(b
) << ((i
- 4) * 8);
90 outSizeFull
= (SizeT
)outSize
;
91 if (sizeof(SizeT
) >= 8) {
93 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
96 outSizeFull
|= (((SizeT
)outSizeHigh
<< 16) << 16);
97 } else if (outSizeHigh
!= 0 || (UInt32
)(SizeT
)outSize
!= outSize
) {
99 * SizeT is a 32 bit uint => We cannot manage files larger than
100 * 4GB! Assume however that all 0xf values is "unknown size" and
101 * not actually a file of 2^64 bits.
104 if (outSizeHigh
!= (SizeT
)-1 || outSize
!= (SizeT
)-1) {
105 debug ("LZMA: 64bit support not enabled.\n");
106 return SZ_ERROR_DATA
;
110 debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull
);
111 debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize
);
113 g_Alloc
.Alloc
= SzAlloc
;
114 g_Alloc
.Free
= SzFree
;
117 outProcessed
= outSizeFull
;
122 outStream
, &outProcessed
,
123 inStream
+ LZMA_DATA_OFFSET
, &compressedSize
,
124 inStream
, LZMA_PROPS_SIZE
, LZMA_FINISH_ANY
, &state
, &g_Alloc
);
125 *uncompressedSize
= outProcessed
;