diff options
Diffstat (limited to 'src/libs/7zip/unix/C/Lzma86Enc.c')
-rw-r--r-- | src/libs/7zip/unix/C/Lzma86Enc.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/src/libs/7zip/unix/C/Lzma86Enc.c b/src/libs/7zip/unix/C/Lzma86Enc.c deleted file mode 100644 index efc81ea35..000000000 --- a/src/libs/7zip/unix/C/Lzma86Enc.c +++ /dev/null @@ -1,113 +0,0 @@ -/* Lzma86Enc.c -- LZMA + x86 (BCJ) Filter Encoder -2008-08-05 -Igor Pavlov -Public domain */ - -#include <string.h> - -#include "Lzma86Enc.h" - -#include "../Alloc.h" -#include "../Bra.h" -#include "../LzmaEnc.h" - -#define SZE_OUT_OVERFLOW SZE_DATA_ERROR - -static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); } -static void SzFree(void *p, void *address) { p = p; MyFree(address); } -static ISzAlloc g_Alloc = { SzAlloc, SzFree }; - -#define LZMA86_SIZE_OFFSET (1 + LZMA_PROPS_SIZE) -#define LZMA86_HEADER_SIZE (LZMA86_SIZE_OFFSET + 8) - -int Lzma86_Encode(Byte *dest, size_t *destLen, const Byte *src, size_t srcLen, - int level, UInt32 dictSize, int filterMode) -{ - size_t outSize2 = *destLen; - Byte *filteredStream; - Bool useFilter; - int mainResult = SZ_ERROR_OUTPUT_EOF; - CLzmaEncProps props; - LzmaEncProps_Init(&props); - props.level = level; - props.dictSize = dictSize; - - *destLen = 0; - if (outSize2 < LZMA86_HEADER_SIZE) - return SZ_ERROR_OUTPUT_EOF; - - { - int i; - UInt64 t = srcLen; - for (i = 0; i < 8; i++, t >>= 8) - dest[LZMA86_SIZE_OFFSET + i] = (Byte)t; - } - - filteredStream = 0; - useFilter = (filterMode != SZ_FILTER_NO); - if (useFilter) - { - if (srcLen != 0) - { - filteredStream = (Byte *)MyAlloc(srcLen); - if (filteredStream == 0) - return SZ_ERROR_MEM; - memcpy(filteredStream, src, srcLen); - } - { - UInt32 x86State; - x86_Convert_Init(x86State); - x86_Convert(filteredStream, srcLen, 0, &x86State, 1); - } - } - - { - size_t minSize = 0; - Bool bestIsFiltered = False; - - /* passes for SZ_FILTER_AUTO: - 0 - BCJ + LZMA - 1 - LZMA - 2 - BCJ + LZMA agaian, if pass 0 (BCJ + LZMA) is better. - */ - int numPasses = (filterMode == SZ_FILTER_AUTO) ? 3 : 1; - - int i; - for (i = 0; i < numPasses; i++) - { - size_t outSizeProcessed = outSize2 - LZMA86_HEADER_SIZE; - size_t outPropsSize = 5; - SRes curRes; - Bool curModeIsFiltered = (numPasses > 1 && i == numPasses - 1); - if (curModeIsFiltered && !bestIsFiltered) - break; - if (useFilter && i == 0) - curModeIsFiltered = True; - - curRes = LzmaEncode(dest + LZMA86_HEADER_SIZE, &outSizeProcessed, - curModeIsFiltered ? filteredStream : src, srcLen, - &props, dest + 1, &outPropsSize, 0, - NULL, &g_Alloc, &g_Alloc); - - if (curRes != SZ_ERROR_OUTPUT_EOF) - { - if (curRes != SZ_OK) - { - mainResult = curRes; - break; - } - if (outSizeProcessed <= minSize || mainResult != SZ_OK) - { - minSize = outSizeProcessed; - bestIsFiltered = curModeIsFiltered; - mainResult = SZ_OK; - } - } - } - dest[0] = (bestIsFiltered ? 1 : 0); - *destLen = LZMA86_HEADER_SIZE + minSize; - } - if (useFilter) - MyFree(filteredStream); - return mainResult; -} |