qgstreameraudiooutput_p.h

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// 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 QGSTREAMERAUDIOOUTPUT_P_H
#define QGSTREAMERAUDIOOUTPUT_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/private/qexpected_p.h>
#include <QtMultimedia/private/qplatformaudiooutput_p.h>
 
#include <common/qgst_p.h>
 
QT_BEGIN_NAMESPACE
 
class QAudioDevice;
 
class QGstreamerAudioOutput : public QObject, public QPlatformAudioOutput
{
public:
    static q23::expected<QPlatformAudioOutput *, QString> create(QAudioOutput *parent);
    ~QGstreamerAudioOutput() override;
 
    void setAudioDevice(const QAudioDevice &) override;
    void setVolume(float) override;
    void setMuted(bool) override;
    void setAsync(bool);
 
    QGstElement gstElement() const { return m_audioOutputBin; }
 
private:
    explicit QGstreamerAudioOutput(QAudioOutput *parent);
 
    QGstElement createGstElement();
 
    QAudioDevice m_audioDevice;
 
    // Gst elements
    QGstBin m_audioOutputBin;
 
    QGstElement m_audioQueue;
    QGstElement m_audioConvert;
    QGstElement m_audioResample;
    QGstElement m_audioVolume;
    QGstElement m_audioSink;
 
    bool m_sinkIsAsync = true;
};
 
QT_END_NAMESPACE
 
#endif