qgstreamervideooutput_p.h

Enable keyboard shortcuts

// Copyright (C) 2021 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 QGSTREAMERVIDEOOUTPUT_P_H

#define QGSTREAMERVIDEOOUTPUT_P_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.h>

#include <QtCore/qpointer.h>

#include <QtCore/private/qexpected_p.h>

#include <QtMultimedia/private/qtmultimediaglobal_p.h>

#include <QtMultimedia/private/qmultimediautils_p.h>

#include <common/qgst_p.h>

#include <common/qgstreamervideosink_p.h>

#include <common/qgstsubtitlesink_p.h>

QT_BEGIN_NAMESPACE

class QVideoSink;

class QGstreamerVideoOutput : public QObject, QAbstractSubtitleObserver

    Q_OBJECT

public:

    static q23::expected<QGstreamerVideoOutput *, QString> create(QObject *parent = nullptr);

    ~QGstreamerVideoOutput() override;

    void setVideoSink(QGstreamerRelayVideoSink *sink);

    QGstreamerRelayVideoSink *gstreamerVideoSink() const { return m_gstVideoSink; }

    QGstElement gstElement() const { return m_outputBin; }

    QGstElement gstSubtitleElement() const { return m_subtitleSink; }

    void setActive(bool);

    void setIsPreview();

    void flushSubtitles();

    void setNativeSize(QSize);

    void setRotation(QtVideo::Rotation);

    void updateSubtitle(QString) override;

Q_SIGNALS:

    void subtitleChanged(QString);

private:

    explicit QGstreamerVideoOutput(QObject *parent);

    void updateNativeSize();

    QPointer<QGstreamerRelayVideoSink> m_gstVideoSink;

    // Gst elements

    QGstBin m_outputBin;

    QGstElement m_videoQueue;

    QGstElement m_videoConvertScale;

    QGstElement m_videoSink;

    QGstElement m_subtitleSink;

    QMetaObject::Connection m_subtitleConnection;

    QString m_lastSubtitleString;

    bool m_isActive{ false };

    QSize m_nativeSize;

    QtVideo::Rotation m_rotation{};

};

QT_END_NAMESPACE

#endif