audio preferences

app/audio/audiomanager.cpp

@@ -0,0 +1,111 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "audiomanager.h"
+
+AudioManager* AudioManager::audio_ = nullptr;
+
+void AudioManager::CreateInstance()
+{
+  if (audio_ == nullptr) {
+    audio_ = new AudioManager();
+  }
+}
+
+void AudioManager::DestroyInstance()
+{
+  delete audio_;
+  audio_ = nullptr;
+}
+
+AudioManager *AudioManager::instance()
+{
+  return audio_;
+}
+
+void AudioManager::RefreshDevices()
+{
+  if (refreshing_devices_) {
+    return;
+  }
+
+  input_devices_.clear();
+  output_devices_.clear();
+
+  refreshing_devices_ = true;
+
+  refresh_thread_.start(QThread::LowPriority);
+}
+
+bool AudioManager::IsRefreshing()
+{
+  return refreshing_devices_;
+}
+
+const QList<QAudioDeviceInfo> &AudioManager::ListInputDevices()
+{
+  return input_devices_;
+}
+
+const QList<QAudioDeviceInfo> &AudioManager::ListOutputDevices()
+{
+  return output_devices_;
+}
+
+AudioManager::AudioManager() :
+  output_(nullptr),
+  refreshing_devices_(false)
+{
+  RefreshDevices();
+
+  connect(&refresh_thread_, SIGNAL(ListsReady()), this, SLOT(RefreshThreadDone()));
+}
+
+void AudioManager::RefreshThreadDone()
+{
+  output_devices_ = refresh_thread_.output_devices();
+  input_devices_ = refresh_thread_.input_devices();
+
+  refreshing_devices_ = false;
+
+  emit DeviceListReady();
+}
+
+AudioRefreshDevicesThread::AudioRefreshDevicesThread()
+{
+}
+
+void AudioRefreshDevicesThread::run()
+{
+  output_devices_ = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
+  input_devices_ = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
+
+  emit ListsReady();
+}
+
+const QList<QAudioDeviceInfo>& AudioRefreshDevicesThread::input_devices()
+{
+  return input_devices_;
+}
+
+const QList<QAudioDeviceInfo>& AudioRefreshDevicesThread::output_devices()
+{
+  return output_devices_;
+}