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author | Michele Calgaro <[email protected]> | 2024-06-07 23:30:05 +0900 |
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committer | Michele Calgaro <[email protected]> | 2024-06-07 23:30:05 +0900 |
commit | 17b259df9cb6b28779d4881b2b6c805ee2e48eea (patch) | |
tree | 5ed61937459cb7081089111b0242c01ec178f1f3 /reader/src/formats/pdb/HuffDecompressor.h | |
parent | 1cba8bce178eb2d6719c6f7f21e2c9352c5513a6 (diff) | |
download | tde-ebook-reader-17b259df9cb6b28779d4881b2b6c805ee2e48eea.tar.gz tde-ebook-reader-17b259df9cb6b28779d4881b2b6c805ee2e48eea.zip |
Rename to tde-ebook-reader
Signed-off-by: Michele Calgaro <[email protected]>
Diffstat (limited to 'reader/src/formats/pdb/HuffDecompressor.h')
-rw-r--r-- | reader/src/formats/pdb/HuffDecompressor.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/reader/src/formats/pdb/HuffDecompressor.h b/reader/src/formats/pdb/HuffDecompressor.h new file mode 100644 index 0000000..76539e9 --- /dev/null +++ b/reader/src/formats/pdb/HuffDecompressor.h @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2004-2012 Geometer Plus <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#ifndef __HUFFDECOMPRESSOR_H__ +#define __HUFFDECOMPRESSOR_H__ + +#include <string> + +class ZLInputStream; +class BitReader; + +class HuffDecompressor { + +public: + HuffDecompressor(ZLInputStream& stream, + const std::vector<unsigned long>::const_iterator beginHuffRecordOffsetIt, + const std::vector<unsigned long>::const_iterator endHuffRecordOffsetIt, + const unsigned long endHuffDataOffset, const unsigned long extraFlags); + ~HuffDecompressor(); + + std::size_t decompress(ZLInputStream &stream, char *buffer, std::size_t compressedSize, std::size_t maxUncompressedSize); + bool error() const; +private: + std::size_t sizeOfTrailingEntries(unsigned char* data, std::size_t size) const; + std::size_t readVariableWidthIntegerBE(unsigned char* ptr, std::size_t psize) const; + void bitsDecompress(BitReader bits, std::size_t depth = 0); + +private: + unsigned long myEntryBits; + unsigned long myExtraFlags; + + unsigned long* myCacheTable; + unsigned long* myBaseTable; + unsigned char* myData; + unsigned char** myDicts; + + char* myTargetBuffer; + char* myTargetBufferEnd; + char* myTargetBufferPtr; + + enum { + ERROR_NONE, + ERROR_CORRUPTED_FILE + } myErrorCode; +}; + +#endif /* __HUFFDECOMPRESSOR_H__ */ |