matroskatrack.h

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#ifndef TAG_PARSER_MATROSKATRACK_H
#define TAG_PARSER_MATROSKATRACK_H
 
#include "../abstracttrack.h"
 
namespace TagParser {
 
class EbmlElement;
class MatroskaContainer;
class MatroskaTrack;
class MatroskaTag;
 
class TAG_PARSER_EXPORT MatroskaTrackHeaderMaker {
    friend class MatroskaTrack;
 
public:
    void make(std::ostream &stream) const;
    const MatroskaTrack &track() const;
    std::uint64_t requiredSize() const;
 
private:
    MatroskaTrackHeaderMaker(const MatroskaTrack &track, Diagnostics &diag);
 
    const MatroskaTrack &m_track;
    const std::string &m_language;
    const std::string &m_languageIETF;
    std::uint64_t m_dataSize;
    std::uint64_t m_requiredSize;
    std::uint8_t m_sizeDenotationLength;
};
 
inline const MatroskaTrack &MatroskaTrackHeaderMaker::track() const
{
    return m_track;
}
 
inline std::uint64_t MatroskaTrackHeaderMaker::requiredSize() const
{
    return m_requiredSize;
}
 
class TAG_PARSER_EXPORT MatroskaTrack : public AbstractTrack {
    friend class MatroskaContainer;
    friend class MatroskaTrackHeaderMaker;
 
public:
    MatroskaTrack(EbmlElement &trackElement);
    ~MatroskaTrack() override;
 
    TrackType type() const override;
 
    static MediaFormat codecIdToMediaFormat(const std::string &codecId);
    void readStatisticsFromTags(const std::vector<std::unique_ptr<MatroskaTag>> &tags, Diagnostics &diag);
    MatroskaTrackHeaderMaker prepareMakingHeader(Diagnostics &diag) const;
    void makeHeader(std::ostream &stream, Diagnostics &diag) const;
 
protected:
    void internalParseHeader(Diagnostics &diag, AbortableProgressFeedback &progress) override;
 
private:
    template <typename PropertyType, typename ConversionFunction>
    void assignPropertyFromTagValue(const std::unique_ptr<MatroskaTag> &tag, std::string_view fieldId, PropertyType &integer,
        const ConversionFunction &conversionFunction, Diagnostics &diag);
 
    EbmlElement *m_trackElement;
};
 
inline MatroskaTrackHeaderMaker MatroskaTrack::prepareMakingHeader(Diagnostics &diag) const
{
    return MatroskaTrackHeaderMaker(*this, diag);
}
 
inline void MatroskaTrack::makeHeader(std::ostream &stream, Diagnostics &diag) const
{
    prepareMakingHeader(diag).make(stream);
}
 
} // namespace TagParser
 
#endif // TAG_PARSER_MATROSKATRACK_H