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28 lines
671 B
C
28 lines
671 B
C
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#ifndef HUFFMANSTREAM_H
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#define HUFFMANSTREAM_H
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#include "bitstream.h"
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#include "huffmantable.h"
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class HuffmanStream : public BitStream4 {
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public:
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HuffmanStream(const SubFile &file, SubFile::Handle &hdl, quint32 length,
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const HuffmanTable &table, bool line);
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bool readNext(qint32 &lonDelta, qint32 &latDelta);
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bool readOffset(qint32 &lonDelta, qint32 &latDelta);
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bool atEnd() const
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{return _symbolDataSize + bitsAvailable() < _table.maxSymbolSize();}
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private:
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bool sign(int &val);
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bool readDelta(int sign, qint32 &delta);
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const HuffmanTable &_table;
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quint32 _symbolDataSize;
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quint32 _symbolData;
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int _lonSign, _latSign;
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};
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#endif // HUFFMANSTREAM_H
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