1 /* LzmaEnc.h -- LZMA Encoder 2 2009-02-07 : Igor Pavlov : Public domain */ 3 4 #ifndef __LZMA_ENC_H 5 #define __LZMA_ENC_H 6 7 #include "Types.h" 8 9 #define LZMA_PROPS_SIZE 5 10 11 struct CLzmaEncProps 12 { 13 int level; /* 0 <= level <= 9 */ 14 uint32_t 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_t 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 }; 28 29 void LzmaEncProps_Init(struct CLzmaEncProps *p); 30 void LzmaEncProps_Normalize(struct CLzmaEncProps *p); 31 uint32_t LzmaEncProps_GetDictSize(const struct CLzmaEncProps *props2); 32 33 34 /* ---------- CLzmaEncHandle Interface ---------- */ 35 36 /* LzmaEnc_* functions can return the following exit codes: 37 Returns: 38 SZ_OK - OK 39 SZ_ERROR_MEM - Memory allocation error 40 SZ_ERROR_PARAM - Incorrect parameter 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 46 typedef void * CLzmaEncHandle; 47 48 CLzmaEncHandle LzmaEnc_Create(struct ISzAlloc *alloc); 49 void LzmaEnc_Destroy(CLzmaEncHandle p, struct ISzAlloc *alloc, struct ISzAlloc *allocBig); 50 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const struct CLzmaEncProps *props); 51 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, uint8_t *properties, size_t *size); 52 SRes LzmaEnc_Encode(CLzmaEncHandle p, struct ISeqOutStream *outStream, struct ISeqInStream *inStream, 53 struct ICompressProgress *progress, struct ISzAlloc *alloc, struct ISzAlloc *allocBig); 54 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, uint8_t *dest, size_t *destLen, const uint8_t *src, size_t srcLen, 55 int writeEndMark, struct ICompressProgress *progress, struct ISzAlloc *alloc, struct ISzAlloc *allocBig); 56 57 /* ---------- One Call Interface ---------- */ 58 59 /* LzmaEncode 60 Return code: 61 SZ_OK - OK 62 SZ_ERROR_MEM - Memory allocation error 63 SZ_ERROR_PARAM - Incorrect parameter 64 SZ_ERROR_OUTPUT_EOF - output buffer overflow 65 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) 66 */ 67 68 SRes LzmaEncode(uint8_t *dest, size_t *destLen, const uint8_t *src, size_t srcLen, 69 const struct CLzmaEncProps *props, uint8_t *propsEncoded, size_t *propsSize, int writeEndMark, 70 struct ICompressProgress *progress, struct ISzAlloc *alloc, struct ISzAlloc *allocBig); 71 72 #endif 73