qgstreamervideosink_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 QGSTREAMERVIDEOSINK_H
#define QGSTREAMERVIDEOSINK_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 <private/qtmultimediaglobal_p.h>
#include <private/qplatformvideosink_p.h>
 
#include <common/qgstpipeline_p.h>
#include <common/qgstreamervideooverlay_p.h>
#include <QtGui/qcolor.h>
#include <QtMultimedia/qvideosink.h>
 
#if QT_CONFIG(gstreamer_gl)
#include <gst/gl/gl.h>
#endif
 
QT_BEGIN_NAMESPACE
class QGstreamerVideoRenderer;
class QVideoWindow;
 
class QGstreamerVideoSink : public QPlatformVideoSink
{
    Q_OBJECT
 
public:
    explicit QGstreamerVideoSink(QVideoSink *parent = nullptr);
    ~QGstreamerVideoSink();
 
    void setRhi(QRhi *rhi) override;
    QRhi *rhi() const { return m_rhi; }
 
    QGstElement gstSink();
    QGstElement subtitleSink() const { return gstSubtitleSink; }
 
    void setPipeline(QGstPipeline pipeline);
    bool inStoppedState() const;
 
    GstContext *gstGlDisplayContext() const { return m_gstGlDisplayContext.get(); }
    GstContext *gstGlLocalContext() const { return m_gstGlLocalContext.get(); }
    Qt::HANDLE eglDisplay() const { return m_eglDisplay; }
    QFunctionPointer eglImageTargetTexture2D() const { return m_eglImageTargetTexture2D; }
 
Q_SIGNALS:
    void aboutToBeDestroyed();
 
private:
    void createQtSink();
    void updateSinkElement();
 
    void unrefGstContexts();
    void updateGstContexts();
 
    QGstPipeline gstPipeline;
    QGstBin sinkBin;
    QGstElement gstQueue;
    QGstElement gstPreprocess;
    QGstElement gstCapsFilter;
    QGstElement gstVideoSink;
    QGstElement gstQtSink;
    QGstElement gstSubtitleSink;
 
    QRhi *m_rhi = nullptr;
 
    Qt::HANDLE m_eglDisplay = nullptr;
    QFunctionPointer m_eglImageTargetTexture2D = nullptr;
 
    QGstContextHandle m_gstGlLocalContext;
    QGstContextHandle m_gstGlDisplayContext;
};
 
QT_END_NAMESPACE
 
#endif