1/* LzmaEnc.h -- LZMA Encoder 22008-10-04 : 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 11typedef 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 29void LzmaEncProps_Init(CLzmaEncProps *p); 30void LzmaEncProps_Normalize(CLzmaEncProps *p); 31UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); 32 33 34/* ---------- CLzmaEncHandle Interface ---------- */ 35 36/* LzmaEnc_* functions can return the following exit codes: 37Returns: 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 46typedef void * CLzmaEncHandle; 47 48CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc); 49void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig); 50SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); 51SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); 52SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream, 53 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); 54SRes 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 60Return 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 68SRes 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 73