qwasmmediaplayer_p.h

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// Copyright (C) 2022 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QWASMMEDIAPLAYER_H

#define QWASMMEDIAPLAYER_H

//

//  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.

//

#include <QtMultimedia/private/qplatformmediaplayer_p.h>

#include <QtCore/qglobal.h>

#include <QtCore/qpointer.h>

#include <QtCore/qsize.h>

#include <QtCore/qurl.h>

QT_BEGIN_NAMESPACE

class QWasmAudioOutput;

class QWasmVideoOutput;

class QWasmMediaPlayer : public QObject, public QPlatformMediaPlayer

    Q_OBJECT

public:

    explicit QWasmMediaPlayer(QMediaPlayer *parent = 0);

    ~QWasmMediaPlayer() override;

     enum QWasmMediaPlayerState {

         Error,

         Idle,

         Uninitialized,

         Preparing,

         Prepared,

         Started,

         Paused,

         Stopped,

         PlaybackCompleted

};

    Q_ENUM(QWasmMediaPlayerState)

    enum QWasmMediaNetworkState { NetworkEmpty = 0, NetworkIdle, NetworkLoading, NetworkNoSource };

    Q_ENUM(QWasmMediaNetworkState)

    qint64 duration() const override;

    qint64 position() const override;

    float bufferProgress() const override;

    bool isAudioAvailable() const override;

    bool isVideoAvailable() const override;

    QMediaTimeRange availablePlaybackRanges() const override;

    qreal playbackRate() const override;

    void setPlaybackRate(qreal rate) override;

    QUrl media() const override;

    const QIODevice *mediaStream() const override;

    void setMedia(const QUrl &mediaContent, QIODevice *stream) override;

    void setVideoSink(QVideoSink *surface) override;

    void setAudioOutput(QPlatformAudioOutput *output) override;

    void setPosition(qint64 position) override;

    void play() override;

    void pause() override;

    void stop() override;

    bool isSeekable() const override;

    int trackCount(TrackType trackType) override;

    void updateAudioDevice();

private Q_SLOTS:

    void volumeChanged(float volume);

    void mutedChanged(bool muted);

    void videoOutputReady(bool ready);

    void errorOccured(qint32 code, const QString &message);

    void bufferingChanged(qint32 percent);

    void videoSizeChanged(qint32 width, qint32 height);

    void mediaStateChanged(QWasmMediaPlayer::QWasmMediaPlayerState state);

    void setPositionChanged(qint64 position);

    void setDurationChanged(qint64 duration);

    void videoMetaDataChanged();

    void seekableMediaChanged(bool seekable);

    void onMediaStatusChanged(QMediaPlayer::MediaStatus status);

private:

    void setMediaStatus(QMediaPlayer::MediaStatus status);

    void setAudioAvailable(bool available);

    void setVideoAvailable(bool available);

    void updateAvailablePlaybackRanges();

    void resetBufferingProgress();

    void setSubtitle(QString subtitle);

    void disableTrack(TrackType trackType);

    void initVideo();

    void initAudio();

    friend class StateChangeNotifier;

    QPointer<QWasmVideoOutput> m_videoOutput;

    QWasmAudioOutput *m_audioOutput = nullptr;

    QUrl m_mediaContent;

    QIODevice *m_mediaStream = nullptr;

    QVideoSink *m_videoSink = nullptr;

    int m_bufferPercent = -1;

    bool m_audioAvailable = false;

    bool m_videoAvailable = false;

    QSize m_videoSize;

    bool m_buffering = false;

    QMediaTimeRange m_availablePlaybackRange;

    int m_State;

    bool m_playWhenReady = false;

};

QT_END_NAMESPACE

#endif // QWASMMEDIAPLAYER_H