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#include "qplatformaudiodevices_p.h"
5
6#include <QtCore/qdebug.h>
7#include <QtMultimedia/qaudiodevice.h>
8#include <QtMultimedia/qmediadevices.h>
9#include <QtMultimedia/private/qaudiosystem_p.h>
10
11#if defined(Q_OS_ANDROID)
12# include <QtMultimedia/private/qandroidaudiodevices_p.h>
13#endif
14#if defined(Q_OS_DARWIN)
15# include <QtMultimedia/private/qdarwinaudiodevices_p.h>
16#endif
17#if defined(Q_OS_WINDOWS)
18# include <QtMultimedia/private/qwindowsaudiodevices_p.h>
19#endif
20#if QT_CONFIG(alsa)
21# include <QtMultimedia/private/qalsaaudiodevices_p.h>
22#endif
23#if QT_CONFIG(pulseaudio)
24# include <QtMultimedia/private/qpulseaudiodevices_p.h>
25#endif
26#if QT_CONFIG(pipewire)
27# include <QtMultimedia/private/qpipewire_audiodevices_p.h>
28#endif
29#if defined(Q_OS_QNX)
30# include <QtMultimedia/private/qqnxaudiodevices_p.h>
31#endif
32#if defined(Q_OS_WASM)
33# include <QtMultimedia/private/qwasmmediadevices_p.h>
34#endif
35
36QT_BEGIN_NAMESPACE
37
38std::unique_ptr<QPlatformAudioDevices> QPlatformAudioDevices::create()
39{
40#ifdef Q_OS_DARWIN
41 return std::make_unique<QDarwinAudioDevices>();
42#endif
43#if defined(Q_OS_WINDOWS)
44 return std::make_unique<QWindowsAudioDevices>();
45#endif
46#if defined(Q_OS_ANDROID)
47 return std::make_unique<QAndroidAudioDevices>();
48#endif
49#if QT_CONFIG(pipewire)
50 using namespace Qt::Literals;
51 QByteArray requestedBackend = qgetenv("QT_AUDIO_BACKEND");
52 const bool pipewireRequested = requestedBackend == "pipewire"_ba;
53 const bool considerPipewire = requestedBackend.isNull() || pipewireRequested;
54
55 if (considerPipewire && QtPipeWire::QAudioDevices::isSupported())
56 return std::make_unique<QtPipeWire::QAudioDevices>();
57
58 if (pipewireRequested)
59 qDebug() << "PipeWire audio backend requested. not available. Using default backend";
60
61#endif
62#if QT_CONFIG(pulseaudio)
63 return std::make_unique<QPulseAudioDevices>();
64#endif
65#if QT_CONFIG(alsa)
66 return std::make_unique<QAlsaAudioDevices>();
67#endif
68#if defined(Q_OS_QNX)
69 return std::make_unique<QQnxAudioDevices>();
70#endif
71#if defined(Q_OS_WASM)
72 return std::make_unique<QWasmMediaDevices>();
73#endif
74 return std::make_unique<QPlatformAudioDevices>();
75}
76
77QPlatformAudioDevices::QPlatformAudioDevices()
78{
79 qRegisterMetaType<PrivateTag>(); // for the case of queued connections
80}
81
82QPlatformAudioDevices::~QPlatformAudioDevices() = default;
83
84QList<QAudioDevice> QPlatformAudioDevices::audioInputs() const
85{
86 return m_audioInputs.ensure(creator: [this]() {
87 return findAudioInputs();
88 });
89}
90
91QList<QAudioDevice> QPlatformAudioDevices::audioOutputs() const
92{
93 return m_audioOutputs.ensure(creator: [this]() {
94 return findAudioOutputs();
95 });
96}
97
98void QPlatformAudioDevices::onAudioInputsChanged()
99{
100 m_audioInputs.reset();
101 emit audioInputsChanged(PrivateTag{});
102}
103
104void QPlatformAudioDevices::onAudioOutputsChanged()
105{
106 m_audioOutputs.reset();
107 emit audioOutputsChanged(PrivateTag{});
108}
109
110void QPlatformAudioDevices::updateAudioInputsCache()
111{
112 if (m_audioInputs.update(value: findAudioInputs()))
113 emit audioInputsChanged(PrivateTag{});
114}
115
116void QPlatformAudioDevices::updateAudioOutputsCache()
117{
118 if (m_audioOutputs.update(value: findAudioOutputs()))
119 emit audioOutputsChanged(PrivateTag{});
120}
121
122QPlatformAudioSource *QPlatformAudioDevices::createAudioSource(const QAudioDevice &,
123 const QAudioFormat &, QObject *)
124{
125 return nullptr;
126}
127QPlatformAudioSink *QPlatformAudioDevices::createAudioSink(const QAudioDevice &,
128 const QAudioFormat &, QObject *)
129{
130 return nullptr;
131}
132
133QPlatformAudioSource *QPlatformAudioDevices::audioInputDevice(QAudioFormat format,
134 const QAudioDevice &deviceInfo,
135 QObject *parent)
136{
137 QAudioDevice device = deviceInfo;
138 if (device.isNull())
139 device = QMediaDevices::defaultAudioInput();
140
141 if (device.isNull())
142 return nullptr;
143
144 if (format == QAudioFormat{})
145 format = device.preferredFormat();
146
147 return createAudioSource(device, format, parent);
148}
149
150QPlatformAudioSink *QPlatformAudioDevices::audioOutputDevice(QAudioFormat format,
151 const QAudioDevice &deviceInfo,
152 QObject *parent)
153{
154 QAudioDevice device = deviceInfo;
155 if (device.isNull())
156 device = QMediaDevices::defaultAudioOutput();
157
158 if (device.isNull())
159 return nullptr;
160
161 if (format == QAudioFormat{})
162 format = device.preferredFormat();
163
164 return createAudioSink(device, format, parent);
165}
166
167QT_END_NAMESPACE
168
169#include "moc_qplatformaudiodevices_p.cpp"
170

source code of qtmultimedia/src/multimedia/platform/qplatformaudiodevices.cpp