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| 1 /* LzmaEnc.h -- LZMA Encoder |
| 2 2009-02-07 : Igor Pavlov : Public domain */ |
| 3 |
| 4 #ifndef __LZMA_ENC_H |
| 5 #define __LZMA_ENC_H |
| 6 |
| 7 #include "Types.h" |
| 8 |
| 9 #ifdef __cplusplus |
| 10 extern "C" { |
| 11 #endif |
| 12 |
| 13 #define LZMA_PROPS_SIZE 5 |
| 14 |
| 15 typedef struct _CLzmaEncProps |
| 16 { |
| 17 int level; /* 0 <= level <= 9 */ |
| 18 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version |
| 19 (1 << 12) <= dictSize <= (1 << 30) for 64-bit version |
| 20 default = (1 << 24) */ |
| 21 int lc; /* 0 <= lc <= 8, default = 3 */ |
| 22 int lp; /* 0 <= lp <= 4, default = 0 */ |
| 23 int pb; /* 0 <= pb <= 4, default = 2 */ |
| 24 int algo; /* 0 - fast, 1 - normal, default = 1 */ |
| 25 int fb; /* 5 <= fb <= 273, default = 32 */ |
| 26 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1
*/ |
| 27 int numHashBytes; /* 2, 3 or 4, default = 4 */ |
| 28 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */ |
| 29 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0
*/ |
| 30 int numThreads; /* 1 or 2, default = 2 */ |
| 31 } CLzmaEncProps; |
| 32 |
| 33 void LzmaEncProps_Init(CLzmaEncProps *p); |
| 34 void LzmaEncProps_Normalize(CLzmaEncProps *p); |
| 35 UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); |
| 36 |
| 37 |
| 38 /* ---------- CLzmaEncHandle Interface ---------- */ |
| 39 |
| 40 /* LzmaEnc_* functions can return the following exit codes: |
| 41 Returns: |
| 42 SZ_OK - OK |
| 43 SZ_ERROR_MEM - Memory allocation error |
| 44 SZ_ERROR_PARAM - Incorrect paramater in props |
| 45 SZ_ERROR_WRITE - Write callback error. |
| 46 SZ_ERROR_PROGRESS - some break from progress callback |
| 47 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) |
| 48 */ |
| 49 |
| 50 typedef void * CLzmaEncHandle; |
| 51 |
| 52 CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc); |
| 53 void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig); |
| 54 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); |
| 55 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); |
| 56 SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *in
Stream, |
| 57 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); |
| 58 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte
*src, SizeT srcLen, |
| 59 int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *al
locBig); |
| 60 |
| 61 /* ---------- One Call Interface ---------- */ |
| 62 |
| 63 /* LzmaEncode |
| 64 Return code: |
| 65 SZ_OK - OK |
| 66 SZ_ERROR_MEM - Memory allocation error |
| 67 SZ_ERROR_PARAM - Incorrect paramater |
| 68 SZ_ERROR_OUTPUT_EOF - output buffer overflow |
| 69 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) |
| 70 */ |
| 71 |
| 72 SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, |
| 73 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeE
ndMark, |
| 74 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); |
| 75 |
| 76 #ifdef __cplusplus |
| 77 } |
| 78 #endif |
| 79 |
| 80 #endif |
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