private async Task UpdateStateAsync(
PcAudio audioUpdate, CoreAudioController coreAudioController, CancellationToken stoppingToken)
{
if (audioUpdate?.DefaultDevice == null)
{
return;
}
var defaultPlaybackDevice = coreAudioController.DefaultPlaybackDevice;
// Change default audio device.
if (audioUpdate.DefaultDevice.DeviceId != defaultPlaybackDevice.Id.ToString())
{
var deviceId = Guid.Parse(audioUpdate.DefaultDevice.DeviceId);
var newDefaultAudioDevice = await coreAudioController.GetDeviceAsync(deviceId);
await newDefaultAudioDevice.SetAsDefaultAsync(stoppingToken);
await newDefaultAudioDevice.SetAsDefaultCommunicationsAsync(stoppingToken);
return;
}
// Change muted and / or volume values.
if (audioUpdate.DefaultDevice.MasterMuted.HasValue)
{
var muted = audioUpdate.DefaultDevice.MasterMuted.Value;
if (muted != defaultPlaybackDevice.IsMuted)
{
await defaultPlaybackDevice.SetMuteAsync(muted, stoppingToken);
}
}
if (audioUpdate.DefaultDevice.MasterVolume.HasValue)
{
const int increment = 2;
var deviceAudioVolume = defaultPlaybackDevice.Volume;
var clientAudioVolume = audioUpdate.DefaultDevice.MasterVolume.Value;
var volume = deviceAudioVolume;
if (clientAudioVolume < deviceAudioVolume)
{
volume -= increment;
}
else if (clientAudioVolume > deviceAudioVolume)
{
volume += increment;
}
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (volume != deviceAudioVolume)
{
await defaultPlaybackDevice.SetVolumeAsync(volume, stoppingToken);
}
}
}