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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#ifndef QMEDIAPLAYERCONTROL_H
#define QMEDIAPLAYERCONTROL_H

#include <QtMultimedia/qmediaplayer.h>
#include <QtMultimedia/qmediatimerange.h>
#include <QtMultimedia/qaudiodeviceinfo.h>
#include <QtMultimedia/qmediametadata.h>

#include <QtCore/qpair.h>

QT_BEGIN_NAMESPACE

class QMediaStreamsControl;

class Q_MULTIMEDIA_EXPORT QPlatformMediaPlayer
{
public:
    virtual ~QPlatformMediaPlayer();
    virtual QMediaPlayer::PlaybackState state() const { return m_state; }
    virtual QMediaPlayer::MediaStatus mediaStatus() const { return m_status; };

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

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

    virtual void setAudioRole(QAudio::Role /*role*/) {}
    virtual QList<QAudio::Role> supportedAudioRoles() const { return {}; }

    virtual bool streamPlaybackSupported() const { return false; }

    virtual bool setAudioOutput(const QAudioDeviceInfo &) { return false; }
    virtual QAudioDeviceInfo audioOutput() const { return QAudioDeviceInfo(); }

    virtual QMediaMetaData metaData() const { return {}; }

    virtual void setVideoSink(QVideoSink * /*sink*/) = 0;

    // media streams
    enum TrackType { VideoStream, AudioStream, SubtitleStream, NTrackTypes };

    virtual int trackCount(TrackType) { return 0; };
    virtual QMediaMetaData trackMetaData(TrackType /*type*/, int /*streamNumber*/) { return QMediaMetaData(); }
    virtual int activeTrack(TrackType) { return -1; }
    virtual void setActiveTrack(TrackType, int /*streamNumber*/) {}

    void durationChanged(qint64 duration) { player->durationChanged(duration); }
    void positionChanged(qint64 position) { player->positionChanged(position); }
    void audioAvailableChanged(bool audioAvailable) { player->hasAudioChanged(audioAvailable); }
    void videoAvailableChanged(bool videoAvailable) { player->hasVideoChanged(videoAvailable); }
    void volumeChanged(int volume) { player->volumeChanged(volume); }
    void mutedChanged(bool mute) { player->mutedChanged(mute); }
    void seekableChanged(bool seekable) { player->seekableChanged(seekable); }
    void playbackRateChanged(qreal rate) { player->playbackRateChanged(rate); }
    void bufferProgressChanged(float progress) { player->bufferProgressChanged(progress); }
    void metaDataChanged() { player->metaDataChanged(); }
    void tracksChanged() { player->tracksChanged(); }
    void activeTracksChanged() { player->activeTracksChanged(); }

    void stateChanged(QMediaPlayer::PlaybackState newState);
    void mediaStatusChanged(QMediaPlayer::MediaStatus status);
    void error(int error, const QString &errorString);

protected:
    explicit QPlatformMediaPlayer(QMediaPlayer *parent = nullptr)
        : player(parent)
    {}
private:
    QMediaPlayer *player = nullptr;
    QMediaPlayer::MediaStatus m_status = QMediaPlayer::NoMedia;
    QMediaPlayer::PlaybackState m_state = QMediaPlayer::StoppedState;
};

QT_END_NAMESPACE


#endif  // QMEDIAPLAYERCONTROL_H