avfvideorenderercontrol_p.h

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// Copyright (C) 2016 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 AVFVIDEORENDERERCONTROL_H
#define AVFVIDEORENDERERCONTROL_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 <QtCore/QObject>
#include <QtCore/QMutex>
#include <QtCore/QSize>
 
#include <avfvideosink_p.h>
 
#include <CoreVideo/CVBase.h>
#include <CoreVideo/CVPixelBuffer.h>
 
Q_FORWARD_DECLARE_OBJC_CLASS(CALayer);
Q_FORWARD_DECLARE_OBJC_CLASS(AVPlayerItemVideoOutput);
Q_FORWARD_DECLARE_OBJC_CLASS(AVPlayerItemLegibleOutput);
Q_FORWARD_DECLARE_OBJC_CLASS(SubtitleDelegate);
 
QT_BEGIN_NAMESPACE
 
class AVFDisplayLink;
 
class AVFVideoRendererControl : public QObject, public AVFVideoSinkInterface
{
    Q_OBJECT
public:
    explicit AVFVideoRendererControl(QObject *parent = nullptr);
    virtual ~AVFVideoRendererControl();
 
    // AVFVideoSinkInterface
    void reconfigure() override;
    void setLayer(CALayer *layer) override;
 
    void setVideoRotation(QVideoFrame::RotationAngle);
    void setVideoMirrored(bool mirrored);
 
    void setSubtitleText(const QString &subtitle)
    {
        m_sink->setSubtitleText(subtitle);
    }
private Q_SLOTS:
    void updateVideoFrame(const CVTimeStamp &ts);
 
private:
    AVPlayerLayer *playerLayer() const { return static_cast<AVPlayerLayer *>(m_layer); }
    CVPixelBufferRef copyPixelBufferFromLayer(size_t& width, size_t& height);
 
    QMutex m_mutex;
    AVFDisplayLink *m_displayLink = nullptr;
    AVPlayerItemVideoOutput *m_videoOutput = nullptr;
    AVPlayerItemLegibleOutput *m_subtitleOutput = nullptr;
    SubtitleDelegate *m_subtitleDelegate = nullptr;
    QVideoFrame::RotationAngle m_rotation = QVideoFrame::Rotation0;
    bool m_mirrored = false;
};
 
QT_END_NAMESPACE
 
#endif // AVFVIDEORENDERERCONTROL_H