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/* LzmaEnc.h -- LZMA Encoder
2013-01-18 : Igor Pavlov : Public domain */
#ifndef __LZMA_ENC_H
#define __LZMA_ENC_H
#include "7zTypes.h"
EXTERN_C_BEGIN
#define LZMA_PROPS_SIZE 5
typedef struct _CLzmaEncProps{ int level; /* 0 <= level <= 9 */ UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
(1 << 12) <= dictSize <= (1 << 30) for 64-bit version default = (1 << 24) */ UInt64 reduceSize; /* estimated size of data that will be compressed. default = 0xFFFFFFFF.
Encoder uses this value to reduce dictionary size */ 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 */} CLzmaEncProps;
void LzmaEncProps_Init(CLzmaEncProps *p);void LzmaEncProps_Normalize(CLzmaEncProps *p);UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
/* ---------- CLzmaEncHandle Interface ---------- */
/* LzmaEnc_* functions can return the following exit codes:
Returns: SZ_OK - OK SZ_ERROR_MEM - Memory allocation error SZ_ERROR_PARAM - Incorrect paramater in props SZ_ERROR_WRITE - Write callback error. SZ_ERROR_PROGRESS - some break from progress callback SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)*/
typedef void * CLzmaEncHandle;
CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc);void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig);SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
/* ---------- One Call Interface ---------- */
/* LzmaEncode
Return code: SZ_OK - OK SZ_ERROR_MEM - Memory allocation error SZ_ERROR_PARAM - Incorrect paramater SZ_ERROR_OUTPUT_EOF - output buffer overflow SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)*/
SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
EXTERN_C_END
#endif
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