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78 lines
3.0 KiB
78 lines
3.0 KiB
/* LzmaEnc.h -- LZMA Encoder |
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2013-01-18 : Igor Pavlov : Public domain */ |
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#ifndef __LZMA_ENC_H |
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#define __LZMA_ENC_H |
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#include "7zTypes.h" |
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EXTERN_C_BEGIN |
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#define LZMA_PROPS_SIZE 5 |
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typedef struct _CLzmaEncProps |
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{ |
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int level; /* 0 <= level <= 9 */ |
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UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version |
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(1 << 12) <= dictSize <= (1 << 30) for 64-bit version |
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default = (1 << 24) */ |
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UInt64 reduceSize; /* estimated size of data that will be compressed. default = 0xFFFFFFFF. |
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Encoder uses this value to reduce dictionary size */ |
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int lc; /* 0 <= lc <= 8, default = 3 */ |
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int lp; /* 0 <= lp <= 4, default = 0 */ |
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int pb; /* 0 <= pb <= 4, default = 2 */ |
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int algo; /* 0 - fast, 1 - normal, default = 1 */ |
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int fb; /* 5 <= fb <= 273, default = 32 */ |
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int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */ |
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int numHashBytes; /* 2, 3 or 4, default = 4 */ |
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UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */ |
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unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */ |
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int numThreads; /* 1 or 2, default = 2 */ |
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} CLzmaEncProps; |
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void LzmaEncProps_Init(CLzmaEncProps *p); |
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void LzmaEncProps_Normalize(CLzmaEncProps *p); |
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UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); |
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/* ---------- CLzmaEncHandle Interface ---------- */ |
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/* LzmaEnc_* functions can return the following exit codes: |
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Returns: |
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SZ_OK - OK |
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SZ_ERROR_MEM - Memory allocation error |
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SZ_ERROR_PARAM - Incorrect paramater in props |
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SZ_ERROR_WRITE - Write callback error. |
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SZ_ERROR_PROGRESS - some break from progress callback |
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SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) |
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*/ |
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typedef void * CLzmaEncHandle; |
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CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc); |
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void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig); |
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SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); |
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SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); |
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SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream, |
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ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); |
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SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, |
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int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); |
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/* ---------- One Call Interface ---------- */ |
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/* LzmaEncode |
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Return code: |
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SZ_OK - OK |
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SZ_ERROR_MEM - Memory allocation error |
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SZ_ERROR_PARAM - Incorrect paramater |
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SZ_ERROR_OUTPUT_EOF - output buffer overflow |
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SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) |
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*/ |
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SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, |
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const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark, |
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ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); |
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EXTERN_C_END |
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#endif
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