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#ifndef QMEDIAPLAYER_H
#define QMEDIAPLAYER_H

#include <QtCore/qobject.h>
#include <QtMultimedia/qtmultimediaglobal.h>
#include <QtMultimedia/qmediaenumdebug.h>
#include <QtMultimedia/qaudio.h>

QT_BEGIN_NAMESPACE

class QVideoSink;
class QAudioDeviceInfo;
class QMediaMetaData;
class QMediaTimeRange;

class QMediaPlayerPrivate;
class Q_MULTIMEDIA_EXPORT QMediaPlayer : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
    Q_PROPERTY(qint64 duration READ duration NOTIFY durationChanged)
    Q_PROPERTY(qint64 position READ position WRITE setPosition NOTIFY positionChanged)
    Q_PROPERTY(int volume READ volume WRITE setVolume NOTIFY volumeChanged)
    Q_PROPERTY(bool muted READ isMuted WRITE setMuted NOTIFY mutedChanged)
    Q_PROPERTY(float bufferProgress READ bufferProgress NOTIFY bufferProgressChanged)
    Q_PROPERTY(bool hasAudio READ hasAudio NOTIFY hasAudioChanged)
    Q_PROPERTY(bool hasVideo READ hasVideo NOTIFY hasVideoChanged)
    Q_PROPERTY(bool seekable READ isSeekable NOTIFY seekableChanged)
    Q_PROPERTY(qreal playbackRate READ playbackRate WRITE setPlaybackRate NOTIFY playbackRateChanged)
    Q_PROPERTY(PlaybackState playbackState READ playbackState NOTIFY playbackStateChanged)
    Q_PROPERTY(bool autoPlay READ autoPlay WRITE setAutoPlay NOTIFY autoPlayChanged)
    Q_PROPERTY(MediaStatus mediaStatus READ mediaStatus NOTIFY mediaStatusChanged)
    Q_PROPERTY(QAudio::Role audioRole READ audioRole WRITE setAudioRole NOTIFY audioRoleChanged)
    Q_PROPERTY(QMediaMetaData metaData READ metaData NOTIFY metaDataChanged)
    Q_PROPERTY(Error error READ error NOTIFY errorChanged)
    Q_PROPERTY(QString errorString READ errorString NOTIFY errorChanged)
    Q_PROPERTY(QObject *videoOutput READ videoOutput WRITE setVideoOutput NOTIFY videoOutputChanged)
    Q_ENUMS(PlaybackState)
    Q_ENUMS(MediaStatus)
    Q_ENUMS(Error)

public:
    enum PlaybackState
    {
        StoppedState,
        PlayingState,
        PausedState
    };

    enum MediaStatus
    {
        NoMedia,
        LoadingMedia,
        LoadedMedia,
        StalledMedia,
        BufferingMedia,
        BufferedMedia,
        EndOfMedia,
        InvalidMedia
    };

    enum Error
    {
        NoError,
        ResourceError,
        FormatError,
        NetworkError,
        AccessDeniedError
    };

    explicit QMediaPlayer(QObject *parent = nullptr);
    ~QMediaPlayer();

    // new API
//    bool enableLowLatencyPlayback(bool tryEnable);
//    bool isLowLatencyPlaybackEnabled() const;

    bool setAudioOutput(const QAudioDeviceInfo &device);
    QAudioDeviceInfo audioOutput() const;

    QList<QMediaMetaData> audioTracks() const;
    QList<QMediaMetaData> videoTracks() const;
    QList<QMediaMetaData> subtitleTracks() const;

    int activeAudioTrack() const;
    int activeVideoTrack() const;
    int activeSubtitleTrack() const;

    void setActiveAudioTrack(int index);
    void setActiveVideoTrack(int index);
    void setActiveSubtitleTrack(int index);

    void setVideoOutput(QObject *);
    QObject *videoOutput() const;
#if 0
    void setVideoOutput(const QList<QVideoSink *> &sinks);
#endif

    void setVideoSink(QVideoSink *sink);
    QVideoSink *videoSink() const;

    QUrl source() const;
    const QIODevice *sourceStream() const;

    PlaybackState playbackState() const;
    MediaStatus mediaStatus() const;

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

    int volume() const;
    bool isMuted() const;
    bool hasAudio() const;
    bool hasVideo() const;

    float bufferProgress() const;
    QMediaTimeRange bufferedTimeRange() const;

    bool isSeekable() const;
    qreal playbackRate() const;

    Error error() const;
    QString errorString() const;

    bool isAvailable() const;
    QMediaMetaData metaData() const;

    QAudio::Role audioRole() const;
    void setAudioRole(QAudio::Role audioRole);
    QList<QAudio::Role> supportedAudioRoles() const;

    bool autoPlay() const;

public Q_SLOTS:
    void play();
    void pause();
    void stop();

    void setPosition(qint64 position);
    void setVolume(int volume);
    void setMuted(bool muted);
    void setAutoPlay(bool autoPlay);

    void setPlaybackRate(qreal rate);

    void setSource(const QUrl &media, QIODevice *stream = nullptr);

Q_SIGNALS:
    void sourceChanged(const QUrl &media);
    void playbackStateChanged(QMediaPlayer::PlaybackState newState);
    void mediaStatusChanged(QMediaPlayer::MediaStatus status);

    void durationChanged(qint64 duration);
    void positionChanged(qint64 position);

    void volumeChanged(int volume);
    void mutedChanged(bool muted);
    void autoPlayChanged(bool autoPlay);
    void hasAudioChanged(bool available);
    void hasVideoChanged(bool videoAvailable);

    void bufferProgressChanged(float progress);

    void seekableChanged(bool seekable);
    void playbackRateChanged(qreal rate);

    void audioRoleChanged(QAudio::Role role);

    void metaDataChanged();
    void videoOutputChanged();

    void tracksChanged();
    void activeTracksChanged();

    void errorChanged();
    void errorOccurred(QMediaPlayer::Error error, const QString &errorString);

private:
    Q_DISABLE_COPY(QMediaPlayer)
    Q_DECLARE_PRIVATE(QMediaPlayer)
    friend class QPlatformMediaPlayer;
};

QT_END_NAMESPACE

Q_MEDIA_ENUM_DEBUG(QMediaPlayer, PlaybackState)
Q_MEDIA_ENUM_DEBUG(QMediaPlayer, MediaStatus)
Q_MEDIA_ENUM_DEBUG(QMediaPlayer, Error)

#endif  // QMEDIAPLAYER_H