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https://github.com/saitohirga/WSJT-X.git
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where possible audio devices that disappear are not forgotten until the user selects another device, this should allow temporarily missing devices or forgetting to switch on devices before starting WSJT-X to be handled more cleanly. If all else fails, visiting the Settings dialog and clicking OK should get things going again. Note that we still do not have a reliable way of detecting failed audio out devices, in that case selecting another device and then returning to the original should work. Enumerating audio devices is expensive and on Linux may take many seconds per device. To avoid lengthy blocking behaviour until it is absolutely necessary, audio devices are not enumerated until one of the "Settings->Audio" device drop-down lists is opened. Elsewhere when devices must be discovered the enumeration stops as soon as the configured device is discovered. A status bar message is posted when audio devices are being enumerated as a reminder that the UI may block while this is happening. The message box warning about unaccounted-for input audio samples now only triggers when >5 seconds of audio appears to be missing or over provided. Hopefully this will make the warning less annoying for those that are using audio sources with high and/or variable latencies. A status bar message is still posted for any amount of audio input samples unaccounted for >1/5 second, this message appearing a lot should be considered as notification that there is a problem with the audio sub-system, system load is too high, or time synchronization is stepping the PC clock rather than adjusting the frequency to maintain monotonic clock ticks.
215 lines
5.1 KiB
C++
215 lines
5.1 KiB
C++
#include "soundout.h"
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#include <QDateTime>
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#include <QAudioDeviceInfo>
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#include <QAudioOutput>
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#include <QSysInfo>
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#include <qmath.h>
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#include <QDebug>
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#include "Audio/AudioDevice.hpp"
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#include "moc_soundout.cpp"
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bool SoundOutput::checkStream () const
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{
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bool result {false};
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Q_ASSERT_X (m_stream, "SoundOutput", "programming error");
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if (m_stream) {
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switch (m_stream->error ())
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{
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case QAudio::OpenError:
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Q_EMIT error (tr ("An error opening the audio output device has occurred."));
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break;
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case QAudio::IOError:
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Q_EMIT error (tr ("An error occurred during write to the audio output device."));
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break;
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case QAudio::UnderrunError:
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Q_EMIT error (tr ("Audio data not being fed to the audio output device fast enough."));
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break;
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case QAudio::FatalError:
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Q_EMIT error (tr ("Non-recoverable error, audio output device not usable at this time."));
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break;
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case QAudio::NoError:
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result = true;
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break;
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}
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}
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return result;
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}
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void SoundOutput::setFormat (QAudioDeviceInfo const& device, unsigned channels, int frames_buffered)
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{
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Q_ASSERT (0 < channels && channels < 3);
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m_device = device;
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m_channels = channels;
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m_framesBuffered = frames_buffered;
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}
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void SoundOutput::restart (AudioDevice * source)
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{
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if (!m_device.isNull ())
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{
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QAudioFormat format (m_device.preferredFormat ());
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// qDebug () << "Preferred audio output format:" << format;
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format.setChannelCount (m_channels);
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format.setCodec ("audio/pcm");
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format.setSampleRate (48000);
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format.setSampleType (QAudioFormat::SignedInt);
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format.setSampleSize (16);
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format.setByteOrder (QAudioFormat::Endian (QSysInfo::ByteOrder));
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if (!format.isValid ())
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{
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Q_EMIT error (tr ("Requested output audio format is not valid."));
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}
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else if (!m_device.isFormatSupported (format))
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{
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Q_EMIT error (tr ("Requested output audio format is not supported on device."));
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}
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else
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{
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// qDebug () << "Selected audio output format:" << format;
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m_stream.reset (new QAudioOutput (m_device, format));
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checkStream ();
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m_stream->setVolume (m_volume);
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m_stream->setNotifyInterval(1000);
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error_ = false;
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connect (m_stream.data(), &QAudioOutput::stateChanged, this, &SoundOutput::handleStateChanged);
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connect (m_stream.data(), &QAudioOutput::notify, [this] () {checkStream ();});
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// qDebug() << "A" << m_volume << m_stream->notifyInterval();
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}
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}
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if (!m_stream)
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{
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if (!error_)
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{
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error_ = true; // only signal error once
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Q_EMIT error (tr ("No audio output device configured."));
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}
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return;
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}
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else
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{
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error_ = false;
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}
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// we have to set this before every start on the stream because the
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// Windows implementation seems to forget the buffer size after a
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// stop.
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//qDebug () << "SoundOut default buffer size (bytes):" << m_stream->bufferSize () << "period size:" << m_stream->periodSize ();
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if (m_framesBuffered)
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{
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#if defined (Q_OS_WIN)
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m_stream->setBufferSize (m_stream->format().bytesForFrames (m_framesBuffered));
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#endif
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}
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m_stream->setCategory ("production");
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m_source = source;
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m_stream->start (source);
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// qDebug () << "SoundOut selected buffer size (bytes):" << m_stream->bufferSize () << "period size:" << m_stream->periodSize ();
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}
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void SoundOutput::suspend ()
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{
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if (m_stream && QAudio::ActiveState == m_stream->state ())
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{
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m_stream->suspend ();
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checkStream ();
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}
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}
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void SoundOutput::resume ()
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{
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if (m_stream && QAudio::SuspendedState == m_stream->state ())
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{
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m_stream->resume ();
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checkStream ();
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}
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}
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void SoundOutput::reset ()
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{
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if (m_stream)
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{
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m_stream->reset ();
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checkStream ();
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}
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}
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void SoundOutput::stop ()
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{
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if (m_stream)
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{
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m_stream->reset ();
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m_stream->stop ();
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}
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m_stream.reset ();
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}
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qreal SoundOutput::attenuation () const
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{
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return -(20. * qLn (m_volume) / qLn (10.));
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}
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void SoundOutput::setAttenuation (qreal a)
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{
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Q_ASSERT (0. <= a && a <= 999.);
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m_volume = qPow(10.0, -a/20.0);
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// qDebug () << "SoundOut: attn = " << a << ", vol = " << m_volume;
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if (m_stream)
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{
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m_stream->setVolume (m_volume);
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}
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}
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void SoundOutput::resetAttenuation ()
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{
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m_volume = 1.;
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if (m_stream)
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{
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m_stream->setVolume (m_volume);
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}
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}
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void SoundOutput::handleStateChanged (QAudio::State newState)
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{
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switch (newState)
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{
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case QAudio::IdleState:
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Q_EMIT status (tr ("Idle"));
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break;
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case QAudio::ActiveState:
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Q_EMIT status (tr ("Sending"));
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break;
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case QAudio::SuspendedState:
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Q_EMIT status (tr ("Suspended"));
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break;
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#if QT_VERSION >= QT_VERSION_CHECK (5, 10, 0)
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case QAudio::InterruptedState:
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Q_EMIT status (tr ("Interrupted"));
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break;
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#endif
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case QAudio::StoppedState:
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if (!checkStream ())
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{
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Q_EMIT status (tr ("Error"));
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}
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else
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{
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Q_EMIT status (tr ("Stopped"));
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}
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break;
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}
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}
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