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