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

11 static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }

12 static void SzFree(void *p, void *address) { p = p; MyFree(address); }

13 static ISzAlloc g_Alloc = { SzAlloc, SzFree };

14

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 int algo /* 0 = fast, 1 = normal */

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 props.algo = algo;

37

38 return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize, 0,

39 NULL, &g_Alloc, &g_Alloc);

40 }

41

42

43 MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t *srcLen,

44 const unsigned char *props, size_t propsSize)

45 {

46 ELzmaStatus status;

47 return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA_FINISH_ANY, &status, &g_Alloc);

48 }