MP7Time.hpp

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 * MuViNo - ViTooKi Video Annotation Tool                               *
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 * title:   MP7Time.hpp                                             *
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#ifndef _MP7TIME_HPP_
#define _MP7TIME_HPP_

class MP7Time
{
public:
  MP7Time();

  bool setTimePoint(uint value, uint ticksPerSecond = 1);

  bool setTimePoint(const QString &mp7Value);

  bool setTimePoint(const MP7Time &otherTime);

  bool moveTimePoint(int value, uint ticksPerSecond);
  
  bool setDuration(uint value, uint ticks);

  bool setDuration(const QString &mp7Value);

  bool setDuration(const MP7Time &duration);

  bool setDurationFromEnd(const MP7Time &end);

  bool addDuration(const MP7Time &otherTime);

  QString timePointPretty(bool forceSubSec = false) const;

  QString durationPretty() const;

  MP7Time endTimePoint() const;

  QString endTimePointPretty(bool forceSubSec = false) const;

  QString toString() const;

  QString timePointMP7() const;

  QString durationMP7() const;

  double timeToSec() const;

  int timeToMSec() const;

  int durationToMSec() const;

  double durationToSec() const;

  bool timePointIsValid() const;

  bool durationIsNull() const;

  int compareTimePoint(const MP7Time &other) const;

  bool contains(const MP7Time &time) const;

private:
  void reset();

  void resetTimePoint();

  void resetDuration();

  struct timepoint {
    QString date;       // date part, in MPEG-7 format, sign included
    bool hasTime;       // false if both sec and num fields are invalid
    uint sec;           // time in seconds
    uint num;           // numerator of second fraction
    uint denom;         // denominator of second fraction
    QString tz;         // time zone
  } tpoint;

  struct duration {
    char sign;          // +1 or -1
    uint days;
    uint sec;           // seconds
    uint num;           // numerator of second fraction
    uint denom;         // denominator of second fraction
    QString tz;         // time zone
    int units;          // number of time units (for IncrDuration type)
  } duration;

  static uint commonMultiple(uint op1, uint op2);
};

#endif /* _MP7TIME_HPP_ */

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