1/* LzmaLib.c -- LZMA library wrapper 22008-08-05 3Igor Pavlov 4Public domain 5in the public domain */ 6 7#include "LzmaEnc.h" 8#include "LzmaDec.h" 9#include "Alloc.h" 10#include "LzmaLib.h" 11 12static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); } 13static void SzFree(void *p, void *address) { p = p; MyFree(address); } 14static ISzAlloc g_Alloc = { SzAlloc, SzFree }; 15 16MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *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 42MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *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} 48