summaryrefslogtreecommitdiffstatshomepage
path: root/src/lib/lib7z/Lzma86Enc.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/lib7z/Lzma86Enc.c')
-rw-r--r--src/lib/lib7z/Lzma86Enc.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/src/lib/lib7z/Lzma86Enc.c b/src/lib/lib7z/Lzma86Enc.c
deleted file mode 100644
index a0302674a46..00000000000
--- a/src/lib/lib7z/Lzma86Enc.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/* Lzma86Enc.c -- LZMA + x86 (BCJ) Filter Encoder
-2009-08-14 : Igor Pavlov : Public domain */
-
-#include <string.h>
-
-#include "Lzma86.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); }
-
-int Lzma86_Encode(Byte *dest, size_t *destLen, const Byte *src, size_t srcLen,
- int level, UInt32 dictSize, int filterMode)
-{
- ISzAlloc g_Alloc = { SzAlloc, SzFree };
- 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;
-}