Index: third_party/lzma_sdk/C/Lzma86.h |
=================================================================== |
--- third_party/lzma_sdk/C/Lzma86.h (revision 0) |
+++ third_party/lzma_sdk/C/Lzma86.h (revision 0) |
@@ -0,0 +1,111 @@ |
+/* Lzma86.h -- LZMA + x86 (BCJ) Filter |
+2009-08-14 : Igor Pavlov : Public domain */ |
+ |
+#ifndef __LZMA86_H |
+#define __LZMA86_H |
+ |
+#include "Types.h" |
+ |
+EXTERN_C_BEGIN |
+ |
+#define LZMA86_SIZE_OFFSET (1 + 5) |
+#define LZMA86_HEADER_SIZE (LZMA86_SIZE_OFFSET + 8) |
+ |
+/* |
+It's an example for LZMA + x86 Filter use. |
+You can use .lzma86 extension, if you write that stream to file. |
+.lzma86 header adds one additional byte to standard .lzma header. |
+.lzma86 header (14 bytes): |
+ Offset Size Description |
+ 0 1 = 0 - no filter, pure LZMA |
+ = 1 - x86 filter + LZMA |
+ 1 1 lc, lp and pb in encoded form |
+ 2 4 dictSize (little endian) |
+ 6 8 uncompressed size (little endian) |
+ |
+ |
+Lzma86_Encode |
+------------- |
+level - compression level: 0 <= level <= 9, the default value for "level" is 5. |
+ |
+dictSize - The dictionary size in bytes. The maximum value is |
+ 128 MB = (1 << 27) bytes for 32-bit version |
+ 1 GB = (1 << 30) bytes for 64-bit version |
+ The default value is 16 MB = (1 << 24) bytes, for level = 5. |
+ It's recommended to use the dictionary that is larger than 4 KB and |
+ that can be calculated as (1 << N) or (3 << N) sizes. |
+ For better compression ratio dictSize must be >= inSize. |
+ |
+filterMode: |
+ SZ_FILTER_NO - no Filter |
+ SZ_FILTER_YES - x86 Filter |
+ SZ_FILTER_AUTO - it tries both alternatives to select best. |
+ Encoder will use 2 or 3 passes: |
+ 2 passes when FILTER_NO provides better compression. |
+ 3 passes when FILTER_YES provides better compression. |
+ |
+Lzma86Encode allocates Data with MyAlloc functions. |
+RAM Requirements for compressing: |
+ RamSize = dictionarySize * 11.5 + 6MB + FilterBlockSize |
+ filterMode FilterBlockSize |
+ SZ_FILTER_NO 0 |
+ SZ_FILTER_YES inSize |
+ SZ_FILTER_AUTO inSize |
+ |
+ |
+Return code: |
+ SZ_OK - OK |
+ SZ_ERROR_MEM - Memory allocation error |
+ SZ_ERROR_PARAM - Incorrect paramater |
+ SZ_ERROR_OUTPUT_EOF - output buffer overflow |
+ SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) |
+*/ |
+ |
+enum ESzFilterMode |
+{ |
+ SZ_FILTER_NO, |
+ SZ_FILTER_YES, |
+ SZ_FILTER_AUTO |
+}; |
+ |
+SRes Lzma86_Encode(Byte *dest, size_t *destLen, const Byte *src, size_t srcLen, |
+ int level, UInt32 dictSize, int filterMode); |
+ |
+ |
+/* |
+Lzma86_GetUnpackSize: |
+ In: |
+ src - input data |
+ srcLen - input data size |
+ Out: |
+ unpackSize - size of uncompressed stream |
+ Return code: |
+ SZ_OK - OK |
+ SZ_ERROR_INPUT_EOF - Error in headers |
+*/ |
+ |
+SRes Lzma86_GetUnpackSize(const Byte *src, SizeT srcLen, UInt64 *unpackSize); |
+ |
+/* |
+Lzma86_Decode: |
+ In: |
+ dest - output data |
+ destLen - output data size |
+ src - input data |
+ srcLen - input data size |
+ Out: |
+ destLen - processed output size |
+ srcLen - processed input size |
+ Return code: |
+ SZ_OK - OK |
+ SZ_ERROR_DATA - Data error |
+ SZ_ERROR_MEM - Memory allocation error |
+ SZ_ERROR_UNSUPPORTED - unsupported file |
+ SZ_ERROR_INPUT_EOF - it needs more bytes in input buffer |
+*/ |
+ |
+SRes Lzma86_Decode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen); |
+ |
+EXTERN_C_END |
+ |
+#endif |
Property changes on: third_party\lzma_sdk\C\Lzma86.h |
___________________________________________________________________ |
Added: svn:executable |
+ * |
Added: svn:eol-style |
+ LF |