qt-everywhere-src-5.15.1/qtmultimedia/src/plugins/wmf/player/mfplayercontrol.h

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#ifndef MFPLAYERCONTROL_H
#define MFPLAYERCONTROL_H

#include "qmediacontent.h"
#include "qmediaplayercontrol.h"

#include <QtCore/qcoreevent.h>

#include "mfplayersession.h"

QT_USE_NAMESPACE

class MFPlayerControl : public QMediaPlayerControl
{
    Q_OBJECT
public:
    MFPlayerControl(MFPlayerSession *session);
    ~MFPlayerControl();

    QMediaPlayer::State state() const;

    QMediaPlayer::MediaStatus mediaStatus() const;

    qint64 duration() const;

    qint64 position() const;
    void setPosition(qint64 position);

    int volume() const;
    void setVolume(int volume);

    bool isMuted() const;
    void setMuted(bool muted);

    int bufferStatus() const;

    bool isAudioAvailable() const;
    bool isVideoAvailable() const;

    bool isSeekable() const;

    QMediaTimeRange availablePlaybackRanges() const;

    qreal playbackRate() const;
    void setPlaybackRate(qreal rate);

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

    void play();
    void pause();
    void stop();

private Q_SLOTS:
    void handleStatusChanged();
    void handleVideoAvailable();
    void handleAudioAvailable();
    void handleDurationUpdate(qint64 duration);
    void handleSeekableUpdate(bool seekable);
    void handleError(QMediaPlayer::Error errorCode, const QString& errorString, bool isFatal);

private:
    void changeState(QMediaPlayer::State state);
    void resetAudioVideoAvailable();
    void refreshState();

    QMediaPlayer::State m_state;
    bool m_stateDirty;
    QMediaPlayer::MediaStatus m_status;
    QMediaPlayer::Error m_error;

    bool     m_videoAvailable;
    bool     m_audioAvailable;
    qint64   m_duration;
    bool     m_seekable;

    QIODevice *m_stream;
    QMediaContent m_media;
    MFPlayerSession *m_session;
};

#endif