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+/* Lzma86.h -- LZMA + x86 (BCJ) Filter
+2013-01-18 : Igor Pavlov : Public domain */
+
+#ifndef __LZMA86_H
+#define __LZMA86_H
+
+#include "7zTypes.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