1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* LzmaEnc.h -- LZMA Encoder 7 2008-10-04 : Igor Pavlov : Public domain */ 8 9 #ifndef __LZMAENC_H 10 #define __LZMAENC_H 11 12 #include "Types.h" 13 14 #define LZMA_PROPS_SIZE 5 15 16 typedef struct _CLzmaEncProps 17 { 18 int level; /* 0 <= level <= 9 */ 19 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version 20 (1 << 12) <= dictSize <= (1 << 30) for 64-bit version 21 default = (1 << 24) */ 22 int lc; /* 0 <= lc <= 8, default = 3 */ 23 int lp; /* 0 <= lp <= 4, default = 0 */ 24 int pb; /* 0 <= pb <= 4, default = 2 */ 25 int algo; /* 0 - fast, 1 - normal, default = 1 */ 26 int fb; /* 5 <= fb <= 273, default = 32 */ 27 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */ 28 int numHashBytes; /* 2, 3 or 4, default = 4 */ 29 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */ 30 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */ 31 int numThreads; /* 1 or 2, default = 2 */ 32 } CLzmaEncProps; 33 34 extern void LzmaEncProps_Init(CLzmaEncProps *p); 35 void LzmaEncProps_Normalize(CLzmaEncProps *p); 36 UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); 37 38 39 /* ---------- CLzmaEncHandle Interface ---------- */ 40 41 /* LzmaEnc_* functions can return the following exit codes: 42 Returns: 43 SZ_OK - OK 44 SZ_ERROR_MEM - Memory allocation error 45 SZ_ERROR_PARAM - Incorrect paramater in props 46 SZ_ERROR_WRITE - Write callback error. 47 SZ_ERROR_PROGRESS - some break from progress callback 48 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) 49 */ 50 51 typedef void * CLzmaEncHandle; 52 53 CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc); 54 void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig); 55 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); 56 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); 57 SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream, 58 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); 59 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, 60 int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); 61 62 /* ---------- One Call Interface ---------- */ 63 64 /* LzmaEncode 65 Return code: 66 SZ_OK - OK 67 SZ_ERROR_MEM - Memory allocation error 68 SZ_ERROR_PARAM - Incorrect paramater 69 SZ_ERROR_OUTPUT_EOF - output buffer overflow 70 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) 71 */ 72 73 extern SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, 74 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark, 75 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); 76 77 #endif 78