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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#include "soundout.h"
#include "moc_soundout.cpp"
#include <QAudioOutput>
#include <QDateTime>
#include <QLoggingCategory>
#include <QSysInfo>
#include <qmath.h>
Q_DECLARE_LOGGING_CATEGORY(soundout_js8)
bool SoundOutput::checkStream() const {
bool result{false};
Q_ASSERT_X(m_stream, "SoundOutput", "programming error");
if (m_stream) {
switch (m_stream->error()) {
case QAudio::OpenError:
Q_EMIT error(
tr("An error opening the audio output device has occurred."));
break;
case QAudio::IOError:
Q_EMIT error(tr(
"An error occurred during write to the audio output device."));
break;
case QAudio::UnderrunError:
Q_EMIT error(tr("Audio data not being fed to the audio output "
"device fast enough."));
break;
case QAudio::FatalError:
Q_EMIT error(tr("Non-recoverable error, audio output device not "
"usable at this time."));
break;
case QAudio::NoError:
result = true;
break;
}
}
return result;
}
void SoundOutput::setFormat(QAudioDevice const &device, unsigned channels,
unsigned msBuffered) {
Q_ASSERT(0 < channels && channels < 3);
QAudioFormat format(device.preferredFormat());
format.setChannelCount(channels);
format.setSampleRate(48000);
format.setSampleFormat(QAudioFormat::Int16);
setDeviceFormat(device, format, msBuffered);
}
void SoundOutput::setDeviceFormat(QAudioDevice const &device,
QAudioFormat const &format,
unsigned msBuffered) {
if (!format.isValid()) {
Q_EMIT error(tr("Requested output audio format is not valid."));
}
if (!device.isFormatSupported(format)) {
Q_EMIT error(
tr("Requested output audio format is not supported on device."));
}
m_device = device;
m_format = format;
m_msBuffered = msBuffered;
}
void SoundOutput::restart(QIODevice *source) {
if (!m_device.isNull()) {
m_stream.reset(new QAudioSink(m_device, m_format));
qCDebug(soundout_js8)
<< "SoundOutput::restart Selected audio output format:"
<< m_stream->format();
checkStream();
m_stream->setVolume(m_volume);
m_error = false;
connect(m_stream.data(), &QAudioSink::stateChanged, this,
&SoundOutput::handleStateChanged);
}
if (!m_stream) {
if (!m_error) {
m_error = true; // only signal error once
Q_EMIT error(tr("No audio output device configured."));
}
return;
} else {
m_error = false;
}
// we have to set this before every start on the stream because the
// Windows implementation seems to forget the buffer size after a
// stop.
if (m_msBuffered > 0) {
m_stream->setBufferSize(
m_stream->format().bytesForDuration(m_msBuffered));
}
m_stream->start(source);
}
void SoundOutput::suspend() {
if (m_stream && QAudio::ActiveState == m_stream->state()) {
m_stream->suspend();
checkStream();
}
}
void SoundOutput::resume() {
if (m_stream && QAudio::SuspendedState == m_stream->state()) {
m_stream->resume();
checkStream();
}
}
void SoundOutput::reset() {
if (m_stream) {
m_stream->reset();
checkStream();
}
}
void SoundOutput::stop() {
if (m_stream) {
m_stream->reset();
m_stream->stop();
}
// m_stream.reset (); // XXX in WSJTX, seems like a bug, will assert after
// stop checks
}
qreal SoundOutput::attenuation() const {
return -(20. * qLn(m_volume) / qLn(10.));
}
QAudioFormat SoundOutput::format() const { return m_format; }
void SoundOutput::setAttenuation(qreal a) {
Q_ASSERT(0. <= a && a <= 999.);
m_volume = qPow(10.0, -a / 20.0);
// qCDebug (soundout_js8) << "SoundOut: attn = " << a << ", vol = " <<
// m_volume;
if (m_stream) {
m_stream->setVolume(m_volume);
}
}
void SoundOutput::resetAttenuation() {
m_volume = 1.;
if (m_stream) {
m_stream->setVolume(m_volume);
}
}
void SoundOutput::handleStateChanged(QAudio::State newState) const {
switch (newState) {
case QAudio::IdleState:
Q_EMIT status(tr("Idle"));
break;
case QAudio::ActiveState:
Q_EMIT status(tr("Sending"));
break;
case QAudio::SuspendedState:
Q_EMIT status(tr("Suspended"));
break;
case QAudio::StoppedState:
if (!checkStream()) {
Q_EMIT status(tr("Error"));
} else {
Q_EMIT status(tr("Stopped"));
}
break;
}
}
Q_LOGGING_CATEGORY(soundout_js8, "soundout.js8", QtWarningMsg)
|
