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 char *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 char *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 } 47
