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#ifndef QGSTREAMERPLAYERSESSION_H

#define QGSTREAMERPLAYERSESSION_H

#include <QObject>

#include <QUrl>

#include "qgstreamerplayercontrol.h"

#include "qgstreamerbushelper.h"

#include <qmediaplayer.h>

#include <qmediastreamscontrol.h>

#include <gst/gst.h>

class QGstreamerBusHelper;

class QGstreamerMessage;

class QGstreamerVideoRendererInterface;

QT_USE_NAMESPACE

class QGstreamerPlayerSession : public QObject, public QGstreamerSyncEventFilter

{

Q_OBJECT

public:

    QGstreamerPlayerSession(QObject *parent);

    virtual ~QGstreamerPlayerSession();

    QUrl url() const;

    QMediaPlayer::State state() const { return m_state; }

    qint64 duration() const;

    qint64 position() const;

    bool isBuffering() const;

    int bufferingProgress() const;

    int volume() const;

    bool isMuted() const;

    bool isAudioAvailable() const;

    void setVideoRenderer(QObject *renderer);

    bool isVideoAvailable() const;

    bool isSeekable() const;

    qreal playbackRate() const;

    void setPlaybackRate(qreal rate);

    QMap<QByteArray ,QVariant> tags() const { return m_tags; }

    QMap<QtMediaServices::MetaData,QVariant> streamProperties(int streamNumber) const { return m_streamProperties[streamNumber]; }

    int streamCount() const { return m_streamProperties.count(); }

    QMediaStreamsControl::StreamType streamType(int streamNumber) { return m_streamTypes.value(streamNumber, QMediaStreamsControl::UnknownStream); }

    int activeStream(QMediaStreamsControl::StreamType streamType) const;

    void setActiveStream(QMediaStreamsControl::StreamType streamType, int streamNumber);

    bool processSyncMessage(const QGstreamerMessage &message);

public slots:

    void load(const QUrl &url);

    bool play();

    bool pause();

    void stop();

    bool seek(qint64 pos);

    void setVolume(int volume);

    void setMuted(bool muted);

signals:

    void durationChanged(qint64 duration);

    void positionChanged(qint64 position);

    void stateChanged(QMediaPlayer::State state);

    void volumeChanged(int volume);

    void mutedStateChanged(bool muted);

    void audioAvailableChanged(bool audioAvailable);

    void videoAvailableChanged(bool videoAvailable);

    void bufferingChanged(bool buffering);

    void bufferingProgressChanged(int percentFilled);

    void playbackFinished();

    void tagsChanged();

    void streamsChanged();

    void seekableChanged(bool);

    void error(int error, const QString &errorString);

private slots:

    void busMessage(const QGstreamerMessage &message);

    void getStreamsInfo();

    void setSeekable(bool);

private:

    QUrl m_url;

    QMediaPlayer::State m_state;

    QGstreamerBusHelper* m_busHelper;

    GstElement* m_playbin;

    GstElement* m_nullVideoOutput;

    GstBus* m_bus;

    QGstreamerVideoRendererInterface *m_renderer;

    QMap<QByteArray, QVariant> m_tags;

    QList< QMap<QtMediaServices::MetaData,QVariant> > m_streamProperties;

    QList<QMediaStreamsControl::StreamType> m_streamTypes;

    QMap<QMediaStreamsControl::StreamType, int> m_playbin2StreamOffset;

    int m_volume;

    qreal m_playbackRate;

    bool m_muted;

    bool m_audioAvailable;

    bool m_videoAvailable;

    bool m_seekable;

    qint64 m_lastPosition;

    qint64 m_duration;

};

#endif // QGSTREAMERPLAYERSESSION_H