qt-everywhere-src-5.15.1/qtmultimedia/src/multimedia/controls/qmediaplayercontrol.h

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#ifndef QMEDIAPLAYERCONTROL_H
#define QMEDIAPLAYERCONTROL_H

#include <QtMultimedia/qmediacontrol.h>
#include <QtMultimedia/qmediaplayer.h>
#include <QtMultimedia/qmediatimerange.h>

#include <QtCore/qpair.h>

QT_BEGIN_NAMESPACE


class QMediaPlaylist;

class Q_MULTIMEDIA_EXPORT QMediaPlayerControl : public QMediaControl
{
    Q_OBJECT

public:
    ~QMediaPlayerControl();

    virtual QMediaPlayer::State state() const = 0;

    virtual QMediaPlayer::MediaStatus mediaStatus() const = 0;

    virtual qint64 duration() const = 0;

    virtual qint64 position() const = 0;
    virtual void setPosition(qint64 position) = 0;

    virtual int volume() const = 0;
    virtual void setVolume(int volume) = 0;

    virtual bool isMuted() const = 0;
    virtual void setMuted(bool mute) = 0;

    virtual int bufferStatus() const = 0;

    virtual bool isAudioAvailable() const = 0;
    virtual bool isVideoAvailable() const = 0;

    virtual bool isSeekable() const = 0;

    virtual QMediaTimeRange availablePlaybackRanges() const = 0;

    virtual qreal playbackRate() const = 0;
    virtual void setPlaybackRate(qreal rate) = 0;

    virtual QMediaContent media() const = 0;
    virtual const QIODevice *mediaStream() const = 0;
    virtual void setMedia(const QMediaContent &media, QIODevice *stream) = 0;

    virtual void play() = 0;
    virtual void pause() = 0;
    virtual void stop() = 0;

Q_SIGNALS:
    void mediaChanged(const QMediaContent& content);
    void durationChanged(qint64 duration);
    void positionChanged(qint64 position);
    void stateChanged(QMediaPlayer::State newState);
    void mediaStatusChanged(QMediaPlayer::MediaStatus status);
    void volumeChanged(int volume);
    void mutedChanged(bool mute);
    void audioAvailableChanged(bool audioAvailable);
    void videoAvailableChanged(bool videoAvailable);
    void bufferStatusChanged(int percentFilled);
    void seekableChanged(bool seekable);
    void availablePlaybackRangesChanged(const QMediaTimeRange &ranges);
    void playbackRateChanged(qreal rate);
    void error(int error, const QString &errorString);

protected:
    explicit QMediaPlayerControl(QObject *parent = nullptr);
};

#define QMediaPlayerControl_iid "org.qt-project.qt.mediaplayercontrol/5.0"
Q_MEDIA_DECLARE_CONTROL(QMediaPlayerControl, QMediaPlayerControl_iid)

QT_END_NAMESPACE


#endif  // QMEDIAPLAYERCONTROL_H