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718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/* LzmaEnc.h -- LZMA Encoder
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2017-07-27 : Igor Pavlov : Public domain */
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#ifndef __LZMA_ENC_H
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#define __LZMA_ENC_H
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#include "7zTypes.h"
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EXTERN_C_BEGIN
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#define LZMA_PROPS_SIZE 5
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typedef struct _CLzmaEncProps
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{
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int level; /* 0 <= level <= 9 */
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UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
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(1 << 12) <= dictSize <= (3 << 29) for 64-bit version
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default = (1 << 24) */
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int lc; /* 0 <= lc <= 8, default = 3 */
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int lp; /* 0 <= lp <= 4, default = 0 */
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int pb; /* 0 <= pb <= 4, default = 2 */
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int algo; /* 0 - fast, 1 - normal, default = 1 */
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int fb; /* 5 <= fb <= 273, default = 32 */
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int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */
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int numHashBytes; /* 2, 3 or 4, default = 4 */
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UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */
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unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */
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int numThreads; /* 1 or 2, default = 2 */
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UInt64 reduceSize; /* estimated size of data that will be compressed. default = (UInt64)(Int64)-1.
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Encoder uses this value to reduce dictionary size */
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} CLzmaEncProps;
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void LzmaEncProps_Init(CLzmaEncProps *p);
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void LzmaEncProps_Normalize(CLzmaEncProps *p);
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UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
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/* ---------- CLzmaEncHandle Interface ---------- */
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/* LzmaEnc* functions can return the following exit codes:
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SRes:
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SZ_OK - OK
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SZ_ERROR_MEM - Memory allocation error
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SZ_ERROR_PARAM - Incorrect paramater in props
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SZ_ERROR_WRITE - ISeqOutStream write callback error
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SZ_ERROR_OUTPUT_EOF - output buffer overflow - version with (Byte *) output
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SZ_ERROR_PROGRESS - some break from progress callback
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SZ_ERROR_THREAD - error in multithreading functions (only for Mt version)
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*/
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typedef void * CLzmaEncHandle;
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CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc);
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void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig);
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SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
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void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize);
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SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
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unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle p);
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SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
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ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
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SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
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int writeEndMark, ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
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/* ---------- One Call Interface ---------- */
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SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
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const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
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ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
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EXTERN_C_END
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#endif
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