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42 lines
919 B
42 lines
919 B
14 years ago
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#ifndef LZWDecode_H
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#define LZWDecode_H
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#include <string>
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#include "Decoder.h"
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#include "FilterPredictor.h"
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namespace merge_lib
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{
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// this class provides method for FlateDecode encoding and decoding
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class LZWDecode : public Decoder
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{
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public:
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LZWDecode();
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virtual ~LZWDecode();
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bool encode(std::string & decoded) {return true;};
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bool decode(std::string & encoded);
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void initialize(Object * objectWithStram);
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private:
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FilterPredictor *_predict;
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void clearTable();
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int getCode();
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std::string &_encoded;
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std::string _dummy;
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size_t _curSymbolIndex;
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int _earlyChange; // early parameter
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int _readBuf;
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int _readBits;
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int _nextCode;
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int _bitsToRead;
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bool _first;
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int _curSequenceLength;
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};
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}
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#endif // LZW_DECODE_H_INCLUDED
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