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#ifndef QGSTREAMERPLAYERCONTROL_H
#define QGSTREAMERPLAYERCONTROL_H

#include <QtCore/qobject.h>
#include <QtCore/qstack.h>

#include <qmediaplayercontrol.h>
#include <qmediaplayer.h>

#include <limits.h>

QT_BEGIN_NAMESPACE

class QMediaPlayerResourceSetInterface;

class QMediaPlaylist;
class QMediaPlaylistNavigator;
class QSocketNotifier;

class QGstreamerPlayerSession;
class QGstreamerPlayerService;

class QGstreamerPlayerControl : public QMediaPlayerControl
{
    Q_OBJECT

public:
    QGstreamerPlayerControl(QGstreamerPlayerSession *session, QObject *parent = 0);
    ~QGstreamerPlayerControl();

    QMediaPlayer::State state() const override;
    QMediaPlayer::MediaStatus mediaStatus() const override;

    qint64 position() const override;
    qint64 duration() const override;

    int bufferStatus() const override;

    int volume() const override;
    bool isMuted() const override;

    bool isAudioAvailable() const override;
    bool isVideoAvailable() const override;
    void setVideoOutput(QObject *output);

    bool isSeekable() const override;
    QMediaTimeRange availablePlaybackRanges() const override;

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

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

    QMediaPlayerResourceSetInterface* resources() const;

public Q_SLOTS:
    void setPosition(qint64 pos) override;

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

    void setVolume(int volume) override;
    void setMuted(bool muted) override;

private Q_SLOTS:
    void updateSessionState(QMediaPlayer::State state);
    void updateMediaStatus();
    void processEOS();
    void setBufferProgress(int progress);

    void handleInvalidMedia();

    void handleResourcesGranted();
    void handleResourcesLost();
    void handleResourcesDenied();

private:
    void playOrPause(QMediaPlayer::State state);

    void pushState();
    void popAndNotifyState();

    QGstreamerPlayerSession *m_session;
    QMediaPlayer::State m_userRequestedState;
    QMediaPlayer::State m_currentState;
    QMediaPlayer::MediaStatus m_mediaStatus;
    QStack<QMediaPlayer::State> m_stateStack;
    QStack<QMediaPlayer::MediaStatus> m_mediaStatusStack;

    int m_bufferProgress;
    qint64 m_pendingSeekPosition;
    bool m_setMediaPending;
    QMediaContent m_currentResource;
    QIODevice *m_stream;

    QMediaPlayerResourceSetInterface *m_resources;
};

QT_END_NAMESPACE

#endif
