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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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