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-rw-r--r--util/cbfstool/lzma/lzma.hh109
1 files changed, 109 insertions, 0 deletions
diff --git a/util/cbfstool/lzma/lzma.hh b/util/cbfstool/lzma/lzma.hh
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+++ b/util/cbfstool/lzma/lzma.hh
@@ -0,0 +1,109 @@
+#ifndef HHlzmaHH
+#define HHlzmaHH
+
+#include <vector>
+
+extern int LZMA_verbose;
+
+extern unsigned LZMA_NumFastBytes;
+extern unsigned LZMA_AlgorithmNo;
+extern unsigned LZMA_PosStateBits;
+extern unsigned LZMA_LiteralPosStateBits;
+extern unsigned LZMA_LiteralContextBits;
+
+/* decompress LZMA-compressed data. */
+const std::vector<unsigned char> LZMADeCompress
+ (const unsigned char* data, std::size_t length);
+
+const std::vector<unsigned char> LZMADeCompress
+ (const unsigned char* data, std::size_t length, bool& ok);
+
+static inline const std::vector<unsigned char> LZMADeCompress
+ (const std::vector<unsigned char>& buf)
+ { return LZMADeCompress(&buf[0], buf.size()); }
+
+static inline const std::vector<unsigned char> LZMADeCompress
+ (const std::vector<unsigned char>& buf, bool& ok)
+ { return LZMADeCompress(&buf[0], buf.size(), ok); }
+
+/* LZMA-compress data with current settings. */
+const std::vector<unsigned char> LZMACompress
+ (const unsigned char* data, std::size_t length);
+
+static inline const std::vector<unsigned char> LZMACompress
+ (const std::vector<unsigned char>& buf)
+ { return LZMACompress(&buf[0], buf.size()); }
+
+/* LZMA-compress data with given settings. */
+const std::vector<unsigned char> LZMACompress
+ (const unsigned char* data, std::size_t length,
+ unsigned pb,
+ unsigned lp,
+ unsigned lc);
+
+static inline const std::vector<unsigned char> LZMACompress
+ (const std::vector<unsigned char>& buf,
+ unsigned pb,
+ unsigned lp,
+ unsigned lc)
+ { return LZMACompress(&buf[0], buf.size(), pb,lp,lc); }
+
+const std::vector<unsigned char> LZMACompress(
+ const unsigned char* data, std::size_t length,
+ unsigned pb,
+ unsigned lp,
+ unsigned lc,
+ unsigned dictionarysize);
+
+static inline const std::vector<unsigned char> LZMACompress(
+ const std::vector<unsigned char>& buf,
+ unsigned pb,
+ unsigned lp,
+ unsigned lc,
+ unsigned dictionarysize)
+ { return LZMACompress(&buf[0], buf.size(), pb,lp,lc,dictionarysize); }
+
+/* LZMA-compress data with every settings (5*5*9 times), taking the best.
+ * It will consume a lot of time and output useful statistics,
+ * so a context parameter ("why") is also given.
+ */
+const std::vector<unsigned char> LZMACompressHeavy
+ (const unsigned char* data, std::size_t length,
+ const char* why = "?");
+
+const std::vector<unsigned char> LZMACompressAuto
+ (const unsigned char* data, std::size_t length,
+ const char* why = "?");
+
+static inline const std::vector<unsigned char> LZMACompressHeavy
+ (const std::vector<unsigned char>& buf,
+ const char* why = "?")
+ { return LZMACompressHeavy(&buf[0],buf.size(),why); }
+
+static inline const std::vector<unsigned char> LZMACompressAuto
+ (const std::vector<unsigned char>& buf,
+ const char* why = "?")
+ { return LZMACompressAuto(&buf[0],buf.size(),why); }
+
+const std::vector<unsigned char>
+ DoLZMACompress(int HeavyLevel,
+ const unsigned char* data,
+ std::size_t length,
+ const char* why = "?");
+
+static inline const std::vector<unsigned char>
+ DoLZMACompress(int HeavyLevel,
+ const std::vector<unsigned char>& data, const char* why = "?")
+ { return DoLZMACompress(HeavyLevel, &data[0], data.size(), why); }
+
+
+/*
+LZMA compressed file format
+ ---------------------------
+ Offset Size Description
+ 0 1 Special LZMA properties for compressed data
+ 1 4 Dictionary size (little endian)
+ 5 8 Uncompressed size (little endian). -1 means unknown size
+ 13 Compressed data
+*/
+#endif