1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/* LzmaRamDecode.c */
#include "LzmaRamDecode.h"
#ifdef _SZ_ONE_DIRECTORY
#include "LzmaDecode.h"
#include "BranchX86.h"
#else
#include "../LZMA_C/LzmaDecode.h"
#include "../Branch/BranchX86.h"
#endif
#define LZMA_PROPS_SIZE 14
#define LZMA_SIZE_OFFSET 6
int LzmaRamGetUncompressedSize(
const unsigned char *inBuffer,
size_t inSize,
size_t *outSize)
{
unsigned int i;
if (inSize < LZMA_PROPS_SIZE)
return 1;
*outSize = 0;
for(i = 0; i < sizeof(size_t); i++)
*outSize += ((size_t)inBuffer[LZMA_SIZE_OFFSET + i]) << (8 * i);
for(; i < 8; i++)
if (inBuffer[LZMA_SIZE_OFFSET + i] != 0)
return 1;
return 0;
}
#define SZE_DATA_ERROR (1)
#define SZE_OUTOFMEMORY (2)
int LzmaRamDecompress(
const unsigned char *inBuffer,
size_t inSize,
unsigned char *outBuffer,
size_t outSize,
size_t *outSizeProcessed,
void * (*allocFunc)(size_t size),
void (*freeFunc)(void *))
{
CLzmaDecoderState state; /* it's about 24 bytes structure, if int is 32-bit */
int result;
SizeT outSizeProcessedLoc;
SizeT inProcessed;
int useFilter;
if (inSize < LZMA_PROPS_SIZE)
return 1;
useFilter = inBuffer[0];
*outSizeProcessed = 0;
if (useFilter > 1)
return 1;
if (LzmaDecodeProperties(&state.Properties, inBuffer + 1, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
return 1;
state.Probs = (CProb *)allocFunc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
if (state.Probs == 0)
return SZE_OUTOFMEMORY;
result = LzmaDecode(&state,
inBuffer + LZMA_PROPS_SIZE, (SizeT)inSize - LZMA_PROPS_SIZE, &inProcessed,
outBuffer, (SizeT)outSize, &outSizeProcessedLoc);
freeFunc(state.Probs);
if (result != LZMA_RESULT_OK)
return 1;
*outSizeProcessed = (size_t)outSizeProcessedLoc;
if (useFilter == 1)
{
UInt32 _prevMask;
UInt32 _prevPos;
x86_Convert_Init(_prevMask, _prevPos);
x86_Convert(outBuffer, (UInt32)outSizeProcessedLoc, 0, &_prevMask, &_prevPos, 0);
}
return 0;
}
|
