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1 /* LzmaLib.c -- LZMA library wrapper | |
2 2008-08-05 | |
3 Igor Pavlov | |
4 Public domain */ | |
5 | |
6 #include "LzmaEnc.h" | |
7 #include "LzmaDec.h" | |
8 #include "Alloc.h" | |
9 #include "LzmaLib.h" | |
10 | |
11 static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); } | |
12 static void SzFree(void *p, void *address) { p = p; MyFree(address); } | |
13 static ISzAlloc g_Alloc = { SzAlloc, SzFree }; | |
14 | |
15 MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned cha
r *src, size_t srcLen, | |
16 unsigned char *outProps, size_t *outPropsSize, | |
17 int level, /* 0 <= level <= 9, default = 5 */ | |
18 unsigned dictSize, /* use (1 << N) or (3 << N). 4 KB < dictSize <= 128 MB */ | |
19 int lc, /* 0 <= lc <= 8, default = 3 */ | |
20 int lp, /* 0 <= lp <= 4, default = 0 */ | |
21 int pb, /* 0 <= pb <= 4, default = 2 */ | |
22 int fb, /* 5 <= fb <= 273, default = 32 */ | |
23 int numThreads /* 1 or 2, default = 2 */ | |
24 ) | |
25 { | |
26 CLzmaEncProps props; | |
27 LzmaEncProps_Init(&props); | |
28 props.level = level; | |
29 props.dictSize = dictSize; | |
30 props.lc = lc; | |
31 props.lp = lp; | |
32 props.pb = pb; | |
33 props.fb = fb; | |
34 props.numThreads = numThreads; | |
35 | |
36 return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize,
0, | |
37 NULL, &g_Alloc, &g_Alloc); | |
38 } | |
39 | |
40 | |
41 MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned c
har *src, size_t *srcLen, | |
42 const unsigned char *props, size_t propsSize) | |
43 { | |
44 ELzmaStatus status; | |
45 return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA
_FINISH_ANY, &status, &g_Alloc); | |
46 } | |
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