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/* LzmaEnc.h -- LZMA Encoder
2017-07-27 : Igor Pavlov : Public domain */
#ifndef __LZMA_ENC_H
#define __LZMA_ENC_H
#include "7zTypes.h"
EXTERN_C_BEGIN
#define LZMA_PROPS_SIZE 5
typedef struct _CLzmaEncProps
{
int level; /* 0 <= level <= 9 */
UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
(1 << 12) <= dictSize <= (3 << 29) for 64-bit version
default = (1 << 24) */
int lc; /* 0 <= lc <= 8, default = 3 */
int lp; /* 0 <= lp <= 4, default = 0 */
int pb; /* 0 <= pb <= 4, default = 2 */
int algo; /* 0 - fast, 1 - normal, default = 1 */
int fb; /* 5 <= fb <= 273, default = 32 */
int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */
int numHashBytes; /* 2, 3 or 4, default = 4 */
UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */
unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */
int numThreads; /* 1 or 2, default = 2 */
UInt64 reduceSize; /* estimated size of data that will be compressed. default = (UInt64)(Int64)-1.
Encoder uses this value to reduce dictionary size */
} CLzmaEncProps;
void LzmaEncProps_Init(CLzmaEncProps *p);
void LzmaEncProps_Normalize(CLzmaEncProps *p);
UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
/* ---------- CLzmaEncHandle Interface ---------- */
/* LzmaEnc* functions can return the following exit codes:
SRes:
SZ_OK - OK
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_PARAM - Incorrect paramater in props
SZ_ERROR_WRITE - ISeqOutStream write callback error
SZ_ERROR_OUTPUT_EOF - output buffer overflow - version with (Byte *) output
SZ_ERROR_PROGRESS - some break from progress callback
SZ_ERROR_THREAD - error in multithreading functions (only for Mt version)
*/
typedef void * CLzmaEncHandle;
CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc);
void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize);
SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle p);
SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
int writeEndMark, ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
/* ---------- One Call Interface ---------- */
SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
EXTERN_C_END
/* ---------- Streaming Interface ---------- */
SRes LzmaEnc_Prepare(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream, ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_CodeOneBlock(CLzmaEncHandle pp, UInt32 maxPackSize, UInt32 maxUnpackSize);
BoolInt LzmaEnc_IsFinished(CLzmaEncHandle pp);
void LzmaEnc_Finish(CLzmaEncHandle pp);
#endif
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