1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "audiodevices.h"
#include <qmediadevices.h>
#include <qcameradevice.h>
#include <qmediaformat.h>
// Utility functions for converting QAudioFormat fields into text
static QString toString(QAudioFormat::SampleFormat sampleFormat)
{
switch (sampleFormat) {
case QAudioFormat::UInt8:
return "Unsigned 8 bit";
case QAudioFormat::Int16:
return "Signed 16 bit";
case QAudioFormat::Int32:
return "Signed 32 bit";
case QAudioFormat::Float:
return "Float";
default:
return "Unknown";
}
}
AudioDevicesBase::AudioDevicesBase(QWidget *parent)
: QMainWindow(parent)
{
setupUi(this);
}
AudioDevicesBase::~AudioDevicesBase() = default;
AudioTest::AudioTest(QWidget *parent)
: AudioDevicesBase(parent),
m_devices(new QMediaDevices(this))
{
m_devices->videoInputs();
qDebug() << "<<<<<<<<<<<<<<<<<<";
QMediaFormat().supportedFileFormats(QMediaFormat::Encode);
connect(testButton, &QPushButton::clicked, this, &AudioTest::test);
connect(modeBox, QOverload<int>::of(&QComboBox::activated), this, &AudioTest::modeChanged);
connect(deviceBox, QOverload<int>::of(&QComboBox::activated), this, &AudioTest::deviceChanged);
connect(sampleRateSpinBox, &QSpinBox::valueChanged, this, &AudioTest::sampleRateChanged);
connect(channelsSpinBox, &QSpinBox::valueChanged, this, &AudioTest::channelChanged);
connect(sampleFormatBox, QOverload<int>::of(&QComboBox::activated), this, &AudioTest::sampleFormatChanged);
connect(populateTableButton, &QPushButton::clicked, this, &AudioTest::populateTable);
connect(m_devices, &QMediaDevices::audioInputsChanged, this, &AudioTest::updateAudioDevices);
connect(m_devices, &QMediaDevices::audioOutputsChanged, this, &AudioTest::updateAudioDevices);
modeBox->setCurrentIndex(0);
modeChanged(0);
deviceBox->setCurrentIndex(0);
deviceChanged(0);
}
void AudioTest::test()
{
// tries to set all the settings picked.
testResult->clear();
if (!m_deviceInfo.isNull()) {
if (m_deviceInfo.isFormatSupported(m_settings)) {
testResult->setText(tr("Success"));
nearestSampleRate->setText("");
nearestChannel->setText("");
nearestSampleFormat->setText("");
} else {
QAudioFormat nearest = m_deviceInfo.preferredFormat();
testResult->setText(tr("Failed"));
nearestSampleRate->setText(QString("%1").arg(nearest.sampleRate()));
nearestChannel->setText(QString("%1").arg(nearest.channelCount()));
nearestSampleFormat->setText(toString(nearest.sampleFormat()));
}
}
else
testResult->setText(tr("No Device"));
}
void AudioTest::updateAudioDevices()
{
deviceBox->clear();
const auto devices = m_mode == QAudioDevice::Input ? m_devices->audioInputs() : m_devices->audioOutputs();
for (auto &deviceInfo: devices)
deviceBox->addItem(deviceInfo.description(), QVariant::fromValue(deviceInfo));
}
void AudioTest::modeChanged(int idx)
{
testResult->clear();
m_mode = idx == 0 ? QAudioDevice::Input : QAudioDevice::Output;
updateAudioDevices();
deviceBox->setCurrentIndex(0);
deviceChanged(0);
}
void AudioTest::deviceChanged(int idx)
{
testResult->clear();
if (deviceBox->count() == 0)
return;
// device has changed
m_deviceInfo = deviceBox->itemData(idx).value<QAudioDevice>();
sampleRateSpinBox->clear();
sampleRateSpinBox->setMinimum(m_deviceInfo.minimumSampleRate());
sampleRateSpinBox->setMaximum(m_deviceInfo.maximumSampleRate());
int sampleValue = qBound(m_deviceInfo.minimumSampleRate(), 48000,
m_deviceInfo.maximumSampleRate());
sampleRateSpinBox->setValue(sampleValue);
m_settings.setSampleRate(sampleValue);
channelsSpinBox->clear();
channelsSpinBox->setMinimum(m_deviceInfo.minimumChannelCount());
channelsSpinBox->setMaximum(m_deviceInfo.maximumChannelCount());
int channelValue = qBound(m_deviceInfo.minimumChannelCount(), 2,
m_deviceInfo.maximumChannelCount());
channelsSpinBox->setValue(channelValue);
sampleFormatBox->clear();
const QList<QAudioFormat::SampleFormat> sampleFormats = m_deviceInfo.supportedSampleFormats();
for (auto sampleFormat : sampleFormats)
sampleFormatBox->addItem(toString(sampleFormat));
if (sampleFormats.size())
m_settings.setSampleFormat(sampleFormats.at(0));
allFormatsTable->clearContents();
}
void AudioTest::populateTable()
{
int row = 0;
for (auto sampleFormat : m_deviceInfo.supportedSampleFormats()) {
allFormatsTable->setRowCount(row + 1);
QTableWidgetItem *sampleTypeItem = new QTableWidgetItem(toString(sampleFormat));
allFormatsTable->setItem(row, 2, sampleTypeItem);
QTableWidgetItem *sampleRateItem = new QTableWidgetItem(QString("%1 - %2")
.arg(m_deviceInfo.minimumSampleRate()).arg(m_deviceInfo.maximumSampleRate()));
allFormatsTable->setItem(row, 0, sampleRateItem);
QTableWidgetItem *channelsItem = new QTableWidgetItem(QString("%1 - %2")
.arg(m_deviceInfo.minimumChannelCount()).arg(m_deviceInfo.maximumChannelCount()));
allFormatsTable->setItem(row, 1, channelsItem);
++row;
}
}
void AudioTest::sampleRateChanged(int value)
{
// sample rate has changed
m_settings.setSampleRate(value);
}
void AudioTest::channelChanged(int channels)
{
m_settings.setChannelCount(channels);
}
void AudioTest::sampleFormatChanged(int idx)
{
auto formats = m_deviceInfo.supportedSampleFormats();
m_settings.setSampleFormat(formats.at(idx));
}
|
