mirror of
https://github.com/tumic0/GPXSee.git
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99 lines
2.0 KiB
C++
99 lines
2.0 KiB
C++
#ifndef SUBFILE_H
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#define SUBFILE_H
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#include <QVector>
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#include <QDebug>
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class IMG;
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class SubFile
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{
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public:
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enum Type {Unknown, TRE, RGN, LBL, NET, TYP, GMP};
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struct Handle
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{
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Handle() : blockNum(-1), blockPos(-1), pos(-1) {}
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QByteArray data;
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int blockNum;
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int blockPos;
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int pos;
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};
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SubFile(IMG *img, quint32 size) : _img(img), _size(size) {}
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void addBlock(quint16 block) {_blocks.append(block);}
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bool isValid() const;
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quint32 size() const {return _size;}
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bool seek(Handle &handle, quint32 pos) const;
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bool readByte(Handle &handle, quint8 &val) const;
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bool readUInt16(Handle &handle, quint16 &val) const
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{
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quint8 b0, b1;
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if (!(readByte(handle, b0) && readByte(handle, b1)))
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return false;
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val = b0 | ((quint16)b1) << 8;
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return true;
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}
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bool readInt16(Handle &handle, qint16 &val) const
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{
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if (!readUInt16(handle, (quint16&)val))
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return false;
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if((quint16)val > 0x7FFF)
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val = (val & 0x7FFF) - 0x8000;
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return true;
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}
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bool readUInt24(Handle &handle, quint32 &val) const
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{
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quint8 b0, b1, b2;
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if (!(readByte(handle, b0) && readByte(handle, b1)
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&& readByte(handle, b2)))
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return false;
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val = b0 | ((quint32)b1) << 8 | ((quint32)b2) << 16;
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return true;
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}
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bool readInt24(Handle &handle, qint32 &val) const
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{
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if (!readUInt24(handle, (quint32&)val))
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return false;
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if (val > 0x7FFFFF)
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val = (val & 0x7FFFFF) - 0x800000;
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return true;
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}
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bool readUInt32(Handle &handle, quint32 &val) const
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{
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quint8 b0, b1, b2, b3;
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if (!(readByte(handle, b0) && readByte(handle, b1)
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&& readByte(handle, b2) && readByte(handle, b3)))
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return false;
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val = b0 | ((quint32)b1) << 8 | ((quint32)b2) << 16
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| ((quint32)b3) << 24;
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return true;
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}
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quint16 offset() const {return _blocks.first();}
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const QString &imgName() const;
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static Type type(const char str[3]);
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friend QDebug operator<<(QDebug dbg, const SubFile &file);
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private:
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IMG *_img;
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quint32 _size;
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QVector<quint16> _blocks;
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};
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const SubFile &file);
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#endif // QT_NO_DEBUG
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#endif // SUBFILE_H
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