1// Copyright (C) 2022 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
5#ifndef QAUDIODEVICEINFO_P_H
6#define QAUDIODEVICEINFO_P_H
7
8//
9// W A R N I N G
10// -------------
11//
12// This file is not part of the Qt API. It exists purely as an
13// implementation detail. This header file may change from version to
14// version without notice, or even be removed.
15//
16// We mean it.
17//
18
19#include <QtMultimedia/qaudiodevice.h>
20#include <QtCore/private/qglobal_p.h>
21
22QT_BEGIN_NAMESPACE
23
24// Implementations should not include volatile members, such as values that can change between
25// connection sessions. For example, CoreAudio AudioDeviceId on macOS.
26class Q_MULTIMEDIA_EXPORT QAudioDevicePrivate : public QSharedData
27{
28public:
29 QAudioDevicePrivate(QByteArray id, QAudioDevice::Mode m, QString description)
30 : id(std::move(id)), mode(m), description(std::move(description))
31 {}
32 virtual ~QAudioDevicePrivate();
33 const QByteArray id;
34 const QAudioDevice::Mode mode = QAudioDevice::Output;
35 const QString description;
36 bool isDefault = false;
37
38 QAudioFormat preferredFormat;
39 int minimumSampleRate = 0;
40 int maximumSampleRate = 0;
41 int minimumChannelCount = 0;
42 int maximumChannelCount = 0;
43 QList<QAudioFormat::SampleFormat> supportedSampleFormats;
44 QAudioFormat::ChannelConfig channelConfiguration = QAudioFormat::ChannelConfigUnknown;
45
46 static QAudioDevice createQAudioDevice(std::unique_ptr<QAudioDevicePrivate> devicePrivate);
47
48 static const QAudioDevicePrivate *handle(const QAudioDevice &device) { return device.d.get(); }
49
50 template <typename Derived>
51 static const Derived *handle(const QAudioDevice &device)
52 {
53 // Note: RTTI is required for dispatching in the gstreamer backend
54 return dynamic_cast<const Derived *>(handle(device));
55 }
56};
57
58inline const QList<QAudioFormat::SampleFormat> &qAllSupportedSampleFormats()
59{
60 static const auto singleton = QList<QAudioFormat::SampleFormat>{
61 QAudioFormat::UInt8,
62 QAudioFormat::Int16,
63 QAudioFormat::Int32,
64 QAudioFormat::Float,
65 };
66 return singleton;
67}
68
69struct QAudioDevicePrivateAllMembersEqual
70{
71 bool operator()(const QAudioDevicePrivate &lhs, const QAudioDevicePrivate &rhs)
72 {
73 auto asTuple = [](const QAudioDevicePrivate &x) {
74 return std::tie(args: x.id, args: x.mode, args: x.isDefault, args: x.preferredFormat, args: x.description,
75 args: x.minimumSampleRate, args: x.maximumSampleRate, args: x.minimumChannelCount,
76 args: x.maximumChannelCount, args: x.supportedSampleFormats,
77 args: x.channelConfiguration);
78 };
79
80 return asTuple(lhs) == asTuple(rhs);
81 }
82};
83
84QT_END_NAMESPACE
85
86#endif // QAUDIODEVICEINFO_H
87

source code of qtmultimedia/src/multimedia/audio/qaudiodevice_p.h