1/* LzmaLib.c -- LZMA library wrapper
 22008-08-05
 3Igor Pavlov
 4Public domain */
 5
 6#include "LzmaEnc.h"
 7#include "LzmaDec.h"
 8#include "Alloc.h"
 9#include "LzmaLib.h"
10
11static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
12static void SzFree(void *p, void *address) { p = p; MyFree(address); }
13static ISzAlloc g_Alloc = { SzAlloc, SzFree };
14
15MY_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
41MY_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}