1 /* LzmaEnc.h -- LZMA Encoder

2 2008-10-04 : Igor Pavlov : Public domain */

3

4 #ifndef __LZMAENC_H

5 #define __LZMAENC_H

6

7 #include "Types.h"

8

9 #define LZMA_PROPS_SIZE 5

10

11 typedef struct _CLzmaEncProps

12 {

13 int level; /* 0 <= level <= 9 */

14 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version

15 (1 << 12) <= dictSize <= (1 << 30) for 64-bit version

16 default = (1 << 24) */

17 int lc; /* 0 <= lc <= 8, default = 3 */

18 int lp; /* 0 <= lp <= 4, default = 0 */

19 int pb; /* 0 <= pb <= 4, default = 2 */

20 int algo; /* 0 - fast, 1 - normal, default = 1 */

21 int fb; /* 5 <= fb <= 273, default = 32 */

22 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */

23 int numHashBytes; /* 2, 3 or 4, default = 4 */

24 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */

25 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */

26 int numThreads; /* 1 or 2, default = 2 */

27 } CLzmaEncProps;

28

29 void LzmaEncProps_Init(CLzmaEncProps *p);

30 void LzmaEncProps_Normalize(CLzmaEncProps *p);

31 UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);

32

33

34 /* ---------- CLzmaEncHandle Interface ---------- */

35

36 /* LzmaEnc_* functions can return the following exit codes:

37 Returns:

38 SZ_OK - OK

39 SZ_ERROR_MEM - Memory allocation error

40 SZ_ERROR_PARAM - Incorrect paramater in props

41 SZ_ERROR_WRITE - Write callback error.

42 SZ_ERROR_PROGRESS - some break from progress callback

43 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)

44 */

45

46 typedef void * CLzmaEncHandle;

47

48 CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc);

49 void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig);

50 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);

51 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);

52 SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,

53 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);

54 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,

55 int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);

56

57 /* ---------- One Call Interface ---------- */

58

59 /* LzmaEncode

60 Return code:

61 SZ_OK - OK

62 SZ_ERROR_MEM - Memory allocation error

63 SZ_ERROR_PARAM - Incorrect paramater

64 SZ_ERROR_OUTPUT_EOF - output buffer overflow

65 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)

66 */

67

68 SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,

69 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,

70 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);

71

72 #endif