1 /* LzmaLib.c -- LZMA library wrapper
2 2023-04-02 : Igor Pavlov : Public domain */
3
4 #include "Precomp.h"
5
6 #include "Alloc.h"
7 #include "LzmaDec.h"
8 #include "LzmaEnc.h"
9 #include "LzmaLib.h"
10
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)11 Z7_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen,
12 unsigned char *outProps, size_t *outPropsSize,
13 int level, /* 0 <= level <= 9, default = 5 */
14 unsigned dictSize, /* use (1 << N) or (3 << N). 4 KB < dictSize <= 128 MB */
15 int lc, /* 0 <= lc <= 8, default = 3 */
16 int lp, /* 0 <= lp <= 4, default = 0 */
17 int pb, /* 0 <= pb <= 4, default = 2 */
18 int fb, /* 5 <= fb <= 273, default = 32 */
19 int numThreads /* 1 or 2, default = 2 */
20 )
21 {
22 CLzmaEncProps props;
23 LzmaEncProps_Init(&props);
24 props.level = level;
25 props.dictSize = dictSize;
26 props.lc = lc;
27 props.lp = lp;
28 props.pb = pb;
29 props.fb = fb;
30 props.numThreads = numThreads;
31
32 return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize, 0,
33 NULL, &g_Alloc, &g_Alloc);
34 }
35
36
LzmaUncompress(unsigned char * dest,size_t * destLen,const unsigned char * src,size_t * srcLen,const unsigned char * props,size_t propsSize)37 Z7_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t *srcLen,
38 const unsigned char *props, size_t propsSize)
39 {
40 ELzmaStatus status;
41 return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA_FINISH_ANY, &status, &g_Alloc);
42 }
43