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#ifndef DIRECTSHOWPLAYERCONTROL_H
#define DIRECTSHOWPLAYERCONTROL_H

#include <dshow.h>

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

#include <QtCore/qcoreevent.h>

#include "directshowplayerservice.h"

QT_BEGIN_NAMESPACE

class DirectShowPlayerControl : public QMediaPlayerControl
{
    Q_OBJECT
public:
    DirectShowPlayerControl(DirectShowPlayerService *service, QObject *parent = nullptr);
    ~DirectShowPlayerControl() override;

    QMediaPlayer::State state() const override;

    QMediaPlayer::MediaStatus mediaStatus() const override;

    qint64 duration() const override;

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

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

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

    int bufferStatus() const override;

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

    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 &media, QIODevice *stream) override;

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

    void updateState(QMediaPlayer::State state);
    void updateStatus(QMediaPlayer::MediaStatus status);
    void updateMediaInfo(qint64 duration, int streamTypes, bool seekable);
    void updatePlaybackRate(qreal rate);
    void updateAudioOutput(IBaseFilter *filter);
    void updateError(QMediaPlayer::Error error, const QString &errorString);
    void updatePosition(qint64 position);

protected:
    void customEvent(QEvent *event) override;

private:
    enum Properties
    {
        StateProperty        = 0x01,
        StatusProperty       = 0x02,
        StreamTypesProperty  = 0x04,
        DurationProperty     = 0x08,
        PlaybackRateProperty = 0x10,
        SeekableProperty     = 0x20,
        ErrorProperty        = 0x40,
        PositionProperty     = 0x80
    };

    enum Event
    {
        PropertiesChanged = QEvent::User
    };

    void playOrPause(QMediaPlayer::State state);

    void scheduleUpdate(int properties);
    void emitPropertyChanges();
    void setVolumeHelper(int volume);

    DirectShowPlayerService *m_service;
    IBasicAudio *m_audio = nullptr;
    QIODevice *m_stream = nullptr;
    int m_updateProperties = 0;
    QMediaPlayer::State m_state = QMediaPlayer::StoppedState;
    QMediaPlayer::MediaStatus m_status = QMediaPlayer::NoMedia;
    QMediaPlayer::Error m_error = QMediaPlayer::NoError;
    int m_streamTypes = 0;
    int m_volume = 100;
    bool m_muted = false;
    qint64 m_emitPosition = -1;
    qint64 m_pendingPosition = -1;
    qint64 m_duration = 0;
    qreal m_playbackRate = 0;
    bool m_seekable = false;
    QMediaContent m_media;
    QString m_errorString;

};

QT_END_NAMESPACE

#endif