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/* LzmaEnc.h -- LZMA Encoder↩
2017-07-27 : Igor Pavlov : Public domain */↩
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#ifndef __LZMA_ENC_H↩
#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↩
{↩
int level; /* 0 <= level <= 9 */↩
UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version↩
(1 << 12) <= dictSize <= (3 << 29) for 64-bit version↩
default = (1 << 24) */↩
int lc; /* 0 <= lc <= 8, default = 3 */↩
int lp; /* 0 <= lp <= 4, default = 0 */↩
int pb; /* 0 <= pb <= 4, default = 2 */↩
int algo; /* 0 - fast, 1 - normal, default = 1 */↩
int fb; /* 5 <= fb <= 273, default = 32 */↩
int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */↩
int numHashBytes; /* 2, 3 or 4, default = 4 */↩
UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */↩
unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */↩
int numThreads; /* 1 or 2, default = 2 */↩
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UInt64 reduceSize; /* estimated size of data that will be compressed. default = (UInt64)(Int64)-1.↩
Encoder uses this value to reduce dictionary size */↩
} CLzmaEncProps;↩
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void LzmaEncProps_Init(CLzmaEncProps *p);↩
void LzmaEncProps_Normalize(CLzmaEncProps *p);↩
UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);↩
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/* ---------- CLzmaEncHandle Interface ---------- */↩
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/* LzmaEnc* functions can return the following exit codes:↩
SRes:↩
SZ_OK - OK↩
SZ_ERROR_MEM - Memory allocation error↩
SZ_ERROR_PARAM - Incorrect paramater in props↩
SZ_ERROR_WRITE - ISeqOutStream write callback error↩
SZ_ERROR_OUTPUT_EOF - output buffer overflow - version with (Byte *) output↩
SZ_ERROR_PROGRESS - some break from progress callback↩
SZ_ERROR_THREAD - error in multithreading functions (only for Mt version)↩
*/↩
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typedef void * CLzmaEncHandle;↩
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CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc);↩
void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig);↩
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SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);↩
void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize);↩
SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);↩
unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle p);↩
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SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,↩
ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);↩
SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,↩
int writeEndMark, ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);↩
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/* ---------- One Call Interface ---------- */↩
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SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,↩
const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,↩
ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);↩
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EXTERN_C_END↩
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#endif↩