1// Copyright (C) 2021 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QGSTREAMERAUDIOOUTPUT_P_H
5#define QGSTREAMERAUDIOOUTPUT_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <private/qtmultimediaglobal_p.h>
19#include <private/qmultimediautils_p.h>
20#include <qaudiodevice.h>
21
22#include <QtCore/qobject.h>
23
24#include <qgst_p.h>
25#include <qgstpipeline_p.h>
26#include <private/qplatformaudiooutput_p.h>
27
28QT_BEGIN_NAMESPACE
29
30class QGstreamerMessage;
31class QAudioDevice;
32
33class Q_MULTIMEDIA_EXPORT QGstreamerAudioOutput : public QObject, public QPlatformAudioOutput
34{
35 Q_OBJECT
36
37public:
38 static QMaybe<QPlatformAudioOutput *> create(QAudioOutput *parent);
39 ~QGstreamerAudioOutput();
40
41 void setAudioDevice(const QAudioDevice &) override;
42 void setVolume(float volume) override;
43 void setMuted(bool muted) override;
44
45 void setPipeline(const QGstPipeline &pipeline);
46
47 QGstElement gstElement() const { return gstAudioOutput; }
48
49Q_SIGNALS:
50 void mutedChanged(bool);
51 void volumeChanged(int);
52
53private:
54 QGstreamerAudioOutput(QGstElement audioconvert, QGstElement audioresample, QGstElement volume,
55 QGstElement autoaudiosink, QAudioOutput *parent);
56
57 QAudioDevice m_audioOutput;
58
59 // Gst elements
60 QGstPipeline gstPipeline;
61 QGstBin gstAudioOutput;
62
63 QGstElement audioQueue;
64 QGstElement audioConvert;
65 QGstElement audioResample;
66 QGstElement audioVolume;
67 QGstElement audioSink;
68};
69
70QT_END_NAMESPACE
71
72#endif
73

source code of qtmultimedia/src/plugins/multimedia/gstreamer/common/qgstreameraudiooutput_p.h