public void CreateDevice(EventHandler <DefaultDeviceChangedEventArgs> aDefaultDeviceChangedHandler,
EventHandler <AudioEndpointVolumeCallbackEventArgs> aVolumeChangedHandler)
{
try
{
//Create device and register default device change notification
_mMdeviceEnumerator = new MMDeviceEnumerator();
iMultiMediaNotificationClient = new MMNotificationClient(_mMdeviceEnumerator);
iMultiMediaNotificationClient.DefaultDeviceChanged += iDefaultDeviceChangedHandler = aDefaultDeviceChangedHandler;
var mMdeviceList = _mMdeviceEnumerator.EnumAudioEndpoints(DataFlow.Render, DeviceState.Active);
if (mMdeviceList != null && mMdeviceList.Count > 0)
{
_mMdevice = _mMdeviceEnumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia);
GUIGraphicsContext.CurrentAudioRendererDevice = _mMdevice.FriendlyName;
//Register to get volume modifications
if (_mMdevice != null)
{
iAudioEndpointVolume = AudioEndpointVolume.FromDevice(_mMdevice);
}
iAudioEndpointVolumeMixerCallback = new CSCore.CoreAudioAPI.AudioEndpointVolumeCallback();
iAudioEndpointVolumeMixerCallback.NotifyRecived += iVolumeChangedHandler = aVolumeChangedHandler;
iAudioEndpointVolume?.RegisterControlChangeNotify(iAudioEndpointVolumeMixerCallback);
}
// For audio session
Stop();
//DispatchingTimerStart(); // Disable because the check will be done in IsMuted code
}
catch (Exception)
{
// When no device available
}
}
public void Dispose()
{
// Client up our MM objects in reverse order
if (iAudioEndpointVolumeMixerCallback != null && iAudioEndpointVolume != null)
{
iAudioEndpointVolume.UnregisterControlChangeNotify(iAudioEndpointVolumeMixerCallback);
}
if (iAudioEndpointVolumeMixerCallback != null)
{
iAudioEndpointVolumeMixerCallback.NotifyRecived -= iVolumeChangedHandler;
iAudioEndpointVolumeMixerCallback = null;
}
if (iAudioEndpointVolume != null)
{
iAudioEndpointVolume.Dispose();
iAudioEndpointVolume = null;
}
if (_mMdevice != null)
{
_mMdevice.Dispose();
_mMdevice = null;
}
if (iMultiMediaNotificationClient != null)
{
iMultiMediaNotificationClient.DefaultDeviceChanged -= iDefaultDeviceChangedHandler;
iMultiMediaNotificationClient.Dispose();
iMultiMediaNotificationClient = null;
}
if (_mMdeviceEnumerator != null)
{
_mMdeviceEnumerator.Dispose();
_mMdeviceEnumerator = null;
}
Stop();
Close();
}
public void CanCreateAudioEndpointVolumeNotification()
{
using (var device = Utils.GetDefaultRenderDevice())
using (var endpointVolume = AudioEndpointVolume.FromDevice(device))
{
AudioEndpointVolumeCallback callback = new AudioEndpointVolumeCallback();
callback.NotifyRecived += (s, e) =>
{
Debug.WriteLine("Notification1");
//Debug.Assert(e.Channels == endpointVolume.ChannelCount);
};
endpointVolume.RegisterControlChangeNotify(callback);
var vol = endpointVolume.GetChannelVolumeLevelScalar(0);
endpointVolume.SetChannelVolumeLevelScalar(0, 1f, Guid.Empty);
endpointVolume.SetChannelVolumeLevelScalar(0, vol, Guid.Empty);
endpointVolume.UnregisterControlChangeNotify(callback);
System.Threading.Thread.Sleep(1000);
}
}
