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// LzmaRam.h
#ifndef __LzmaRam_h
#define __LzmaRam_h
#include <stdlib.h>
#include "../../../Common/Types.h"
/*
LzmaRamEncode: BCJ + LZMA RAM->RAM compressing.
It uses .lzma format, but it writes one additional byte to .lzma file:
0: - no filter
1: - x86(BCJ) filter.
To provide best compression ratio dictionarySize mustbe >= inSize
LzmaRamEncode allocates Data with MyAlloc/BigAlloc functions.
RAM Requirements:
RamSize = dictionarySize * 9.5 + 6MB + FilterBlockSize
FilterBlockSize = 0, if useFilter == false
FilterBlockSize = inSize, if useFilter == true
Return code:
0 - OK
1 - Unspecified Error
2 - Memory allocating error
3 - Output buffer OVERFLOW
If you use SZ_FILTER_AUTO mode, then encoder will use 2 or 3 passes:
2 passes when FILTER_NO provides better compression.
3 passes when FILTER_YES provides better compression.
*/
enum ESzFilterMode
{
SZ_FILTER_NO,
SZ_FILTER_YES,
SZ_FILTER_AUTO
};
int LzmaRamEncode(
const Byte *inBuffer, size_t inSize,
Byte *outBuffer, size_t outSize, size_t *outSizeProcessed,
UInt32 dictionarySize, ESzFilterMode filterMode);
#endif
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