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
SzAlloc(void * p,size_t size)11 static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
SzFree(void * p,void * address)12 static void SzFree(void *p, void *address) { p = p; MyFree(address); }
13 static ISzAlloc g_Alloc = { SzAlloc, SzFree };
14
LzmaCompress(unsigned char * dest,size_t * destLen,const unsigned char * src,size_t srcLen,unsigned char * outProps,size_t * outPropsSize,int level,unsigned dictSize,int lc,int lp,int pb,int fb,int numThreads)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
LzmaUncompress(unsigned char * dest,size_t * destLen,const unsigned char * src,size_t * srcLen,const unsigned char * props,size_t propsSize)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