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| 1 /* LzmaLib.c -- LZMA library wrapper | |
| 2 2008-08-05 | |
| 3 Igor Pavlov | |
| 4 Public domain | |
| 5 in the public domain */ | |
| 6 | |
| 7 #include "LzmaEnc.h" | |
| 8 #include "LzmaDec.h" | |
| 9 #include "Alloc.h" | |
| 10 #include "LzmaLib.h" | |
| 11 | |
| 12 static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); } | |
| 13 static void SzFree(void *p, void *address) { p = p; MyFree(address); } | |
| 14 static ISzAlloc g_Alloc = { SzAlloc, SzFree }; | |
| 15 | |
| 16 MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned cha
r *src, size_t srcLen, | |
| 17 unsigned char *outProps, size_t *outPropsSize, | |
| 18 int level, /* 0 <= level <= 9, default = 5 */ | |
| 19 unsigned dictSize, /* use (1 << N) or (3 << N). 4 KB < dictSize <= 128 MB */ | |
| 20 int lc, /* 0 <= lc <= 8, default = 3 */ | |
| 21 int lp, /* 0 <= lp <= 4, default = 0 */ | |
| 22 int pb, /* 0 <= pb <= 4, default = 2 */ | |
| 23 int fb, /* 5 <= fb <= 273, default = 32 */ | |
| 24 int numThreads /* 1 or 2, default = 2 */ | |
| 25 ) | |
| 26 { | |
| 27 CLzmaEncProps props; | |
| 28 LzmaEncProps_Init(&props); | |
| 29 props.level = level; | |
| 30 props.dictSize = dictSize; | |
| 31 props.lc = lc; | |
| 32 props.lp = lp; | |
| 33 props.pb = pb; | |
| 34 props.fb = fb; | |
| 35 props.numThreads = numThreads; | |
| 36 | |
| 37 return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize,
0, | |
| 38 NULL, &g_Alloc, &g_Alloc); | |
| 39 } | |
| 40 | |
| 41 | |
| 42 MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned c
har *src, size_t *srcLen, | |
| 43 const unsigned char *props, size_t propsSize) | |
| 44 { | |
| 45 ELzmaStatus status; | |
| 46 return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA
_FINISH_ANY, &status, &g_Alloc); | |
| 47 } | |
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