1/* LzmaEnc.h -- LZMA Encoder 22023-04-13 : Igor Pavlov : Public domain */ 3 4#ifndef ZIP7_INC_LZMA_ENC_H 5#define ZIP7_INC_LZMA_ENC_H 6 7#include "7zTypes.h" 8 9EXTERN_C_BEGIN 10 11#define LZMA_PROPS_SIZE 5 12 13typedef struct 14{ 15 int level; /* 0 <= level <= 9 */ 16 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version 17 (1 << 12) <= dictSize <= (3 << 29) for 64-bit version 18 default = (1 << 24) */ 19 int lc; /* 0 <= lc <= 8, default = 3 */ 20 int lp; /* 0 <= lp <= 4, default = 0 */ 21 int pb; /* 0 <= pb <= 4, default = 2 */ 22 int algo; /* 0 - fast, 1 - normal, default = 1 */ 23 int fb; /* 5 <= fb <= 273, default = 32 */ 24 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */ 25 int numHashBytes; /* 2, 3 or 4, default = 4 */ 26 unsigned numHashOutBits; /* default = ? */ 27 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */ 28 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */ 29 int numThreads; /* 1 or 2, default = 2 */ 30 31 // int _pad; 32 33 UInt64 reduceSize; /* estimated size of data that will be compressed. default = (UInt64)(Int64)-1. 34 Encoder uses this value to reduce dictionary size */ 35 36 UInt64 affinity; 37} CLzmaEncProps; 38 39void LzmaEncProps_Init(CLzmaEncProps *p); 40void LzmaEncProps_Normalize(CLzmaEncProps *p); 41UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); 42 43 44/* ---------- CLzmaEncHandle Interface ---------- */ 45 46/* LzmaEnc* functions can return the following exit codes: 47SRes: 48 SZ_OK - OK 49 SZ_ERROR_MEM - Memory allocation error 50 SZ_ERROR_PARAM - Incorrect paramater in props 51 SZ_ERROR_WRITE - ISeqOutStream write callback error 52 SZ_ERROR_OUTPUT_EOF - output buffer overflow - version with (Byte *) output 53 SZ_ERROR_PROGRESS - some break from progress callback 54 SZ_ERROR_THREAD - error in multithreading functions (only for Mt version) 55*/ 56 57typedef struct CLzmaEnc CLzmaEnc; 58typedef CLzmaEnc * CLzmaEncHandle; 59// Z7_DECLARE_HANDLE(CLzmaEncHandle) 60 61CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc); 62void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig); 63 64SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); 65void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize); 66SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); 67unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle p); 68 69SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStreamPtr outStream, ISeqInStreamPtr inStream, 70 ICompressProgressPtr progress, ISzAllocPtr alloc, ISzAllocPtr allocBig); 71SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, 72 int writeEndMark, ICompressProgressPtr progress, ISzAllocPtr alloc, ISzAllocPtr allocBig); 73 74 75/* ---------- One Call Interface ---------- */ 76 77SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, 78 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark, 79 ICompressProgressPtr progress, ISzAllocPtr alloc, ISzAllocPtr allocBig); 80 81EXTERN_C_END 82 83#endif 84