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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /other-licenses/7zstub/src/C/Lzma86Enc.c | |
| parent | Initial commit. (diff) | |
| download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'other-licenses/7zstub/src/C/Lzma86Enc.c')
| -rw-r--r-- | other-licenses/7zstub/src/C/Lzma86Enc.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/Lzma86Enc.c b/other-licenses/7zstub/src/C/Lzma86Enc.c new file mode 100644 index 0000000000..ee59fb7d77 --- /dev/null +++ b/other-licenses/7zstub/src/C/Lzma86Enc.c @@ -0,0 +1,106 @@ +/* Lzma86Enc.c -- LZMA + x86 (BCJ) Filter Encoder
+2016-05-16 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+#include <string.h>
+
+#include "Lzma86.h"
+
+#include "Alloc.h"
+#include "Bra.h"
+#include "LzmaEnc.h"
+
+#define SZE_OUT_OVERFLOW SZE_DATA_ERROR
+
+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] = (Byte)(bestIsFiltered ? 1 : 0);
+ *destLen = LZMA86_HEADER_SIZE + minSize;
+ }
+ if (useFilter)
+ MyFree(filteredStream);
+ return mainResult;
+}
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