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Lazy enumeration of audio devices to minimize delays on Linux

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This commit is contained in:
Bill Somerville 2020-08-22 18:14:14 +01:00
parent 3a71184040
commit 718d6d1724
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GPG Key ID: D864B06D1E81618F
1 changed files with 35 additions and 25 deletions
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60
Configuration.cpp
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@ -1522,19 +1522,25 @@ void Configuration::impl::find_audio_devices ()
// retrieve audio input device
//
auto saved_name = settings_->value ("SoundInName").toString ();
audio_input_device_ = find_audio_device (QAudio::AudioInput, ui_->sound_input_combo_box, saved_name);
audio_input_channel_ = AudioDevice::fromString (settings_->value ("AudioInputChannel", "Mono").toString ());
update_audio_channels (ui_->sound_input_combo_box, ui_->sound_input_combo_box->currentIndex (), ui_->sound_input_channel_combo_box, false);
ui_->sound_input_channel_combo_box->setCurrentIndex (audio_input_channel_);
if (audio_input_device_.deviceName () != saved_name)
{
audio_input_device_ = find_audio_device (QAudio::AudioInput, ui_->sound_input_combo_box, saved_name);
audio_input_channel_ = AudioDevice::fromString (settings_->value ("AudioInputChannel", "Mono").toString ());
update_audio_channels (ui_->sound_input_combo_box, ui_->sound_input_combo_box->currentIndex (), ui_->sound_input_channel_combo_box, false);
ui_->sound_input_channel_combo_box->setCurrentIndex (audio_input_channel_);
}
//
// retrieve audio output device
//
saved_name = settings_->value("SoundOutName").toString();
audio_output_channel_ = AudioDevice::fromString (settings_->value ("AudioOutputChannel", "Mono").toString ());
audio_output_device_ = find_audio_device (QAudio::AudioOutput, ui_->sound_output_combo_box, saved_name);
update_audio_channels (ui_->sound_output_combo_box, ui_->sound_output_combo_box->currentIndex (), ui_->sound_output_channel_combo_box, true);
ui_->sound_output_channel_combo_box->setCurrentIndex (audio_output_channel_);
if (audio_output_device_.deviceName () != saved_name)
{
audio_output_channel_ = AudioDevice::fromString (settings_->value ("AudioOutputChannel", "Mono").toString ());
audio_output_device_ = find_audio_device (QAudio::AudioOutput, ui_->sound_output_combo_box, saved_name);
update_audio_channels (ui_->sound_output_combo_box, ui_->sound_output_combo_box->currentIndex (), ui_->sound_output_channel_combo_box, true);
ui_->sound_output_channel_combo_box->setCurrentIndex (audio_output_channel_);
}
}
void Configuration::impl::write_settings ()
@ -1836,6 +1842,8 @@ int Configuration::impl::exec ()
rig_changed_ = false;
initialize_models ();
lazy_models_load (ui_->configuration_tabs->currentIndex ());
return QDialog::exec();
}
@ -2762,28 +2770,30 @@ QAudioDeviceInfo Configuration::impl::find_audio_device (QAudio::Mode mode, QCom
using std::copy;
using std::back_inserter;
combo_box->clear ();
int current_index = -1;
auto const& devices = QAudioDeviceInfo::availableDevices (mode);
Q_FOREACH (auto const& p, devices)
if (device_name.size ())
{
// qDebug () << "Audio device: input:" << (QAudio::AudioInput == mode) << "name:" << p.deviceName () << "preferred format:" << p.preferredFormat () << "endians:" << p.supportedByteOrders () << "codecs:" << p.supportedCodecs () << "channels:" << p.supportedChannelCounts () << "rates:" << p.supportedSampleRates () << "sizes:" << p.supportedSampleSizes () << "types:" << p.supportedSampleTypes ();
combo_box->clear ();
// convert supported channel counts into something we can store in the item model
QList<QVariant> channel_counts;
auto scc = p.supportedChannelCounts ();
copy (scc.cbegin (), scc.cend (), back_inserter (channel_counts));
combo_box->addItem (p.deviceName (), QVariant::fromValue (audio_info_type {p, channel_counts}));
if (p.deviceName () == device_name)
int current_index = -1;
auto const& devices = QAudioDeviceInfo::availableDevices (mode);
Q_FOREACH (auto const& p, devices)
{
current_index = combo_box->count () - 1;
combo_box->setCurrentIndex (current_index);
return p;
// convert supported channel counts into something we can store in the item model
QList<QVariant> channel_counts;
auto scc = p.supportedChannelCounts ();
copy (scc.cbegin (), scc.cend (), back_inserter (channel_counts));
combo_box->addItem (p.deviceName (), QVariant::fromValue (audio_info_type {p, channel_counts}));
if (p.deviceName () == device_name)
{
current_index = combo_box->count () - 1;
combo_box->setCurrentIndex (current_index);
return p;
}
}
combo_box->setCurrentIndex (current_index);
}
combo_box->setCurrentIndex (current_index);
return {};
}