Method UpdatePrefs

src/toolbars/AudioSetupToolBar.cpp:233–333

}

void AudioSetupToolBar::UpdatePrefs()
{
   wxString desc;
   const std::vector<DeviceSourceMap> &inMaps  = DeviceManager::Instance()->GetInputDeviceMaps();
   const std::vector<DeviceSourceMap> &outMaps = DeviceManager::Instance()->GetOutputDeviceMaps();

   auto selectedHost = mHost.Get();
   wxString oldHost = selectedHost ? *selectedHost : wxString{};

   auto hostName = AudioIOHost.Read();

   // if the prefs host name doesn't match the one displayed, it changed
   // in another project's AudioSetupToolBar, so we need to repopulate everything.
   if (oldHost != hostName)
      // updates mHost and mOutput
      FillHostDevices();

   auto devName = AudioIORecordingDevice.Read();
   auto sourceName = AudioIORecordingSource.Read();
   if (sourceName.empty())
      desc = devName;
   else
      desc = devName + wxT(": ") + sourceName;

   if (mInput.Get() && *mInput.Get() != desc) {
      if (mInput.Set(desc))
         // updates mInputChannels
         FillInputChannels();
      else if (!mInput.Empty()) {
         for (size_t i = 0; i < inMaps.size(); i++) {
            if (inMaps[i].hostString == hostName &&
               MakeDeviceSourceString(&inMaps[i]) == mInput.GetFirst()) {
               // use the default.  It should exist but check just in case, falling back on the 0 index.
               DeviceSourceMap* defaultMap = DeviceManager::Instance()->GetDefaultInputDevice(inMaps[i].hostIndex);
               if (defaultMap) {
                  mInput.Set(MakeDeviceSourceString(defaultMap));
                  SetDevices(defaultMap, nullptr);
               }
               else {
                  //use the first item (0th index) if we have no familiar devices
                  mInput.Set(0);
                  SetDevices(&inMaps[i], nullptr);
               }
               break;
            }
         }
      }
   }

   devName = AudioIOPlaybackDevice.Read();
   sourceName = AudioIOPlaybackSource.Read();
   if (sourceName.empty())
      desc = devName;
   else
      desc = devName + wxT(": ") + sourceName;

   if (mOutput.Get() && *mOutput.Get() != desc) {
      if (!mOutput.Set(desc) && !mOutput.Empty()) {