private bool HandleStreamSwitchEvent()
{
Debug.Assert(_inStreamSwitch);
//Step 1: Stop rendering
_audioClient.Stop();
//Step 3: Wait for the default device to change.
if (!_streamSwitchCompleteEvent.WaitOne(750))
{
Debug.WriteLine("Stream switch timeout - aborting...");
goto StreamSwitchErrorExit;
}
//Step 2: Release resources.
_audioSessionControl.UnregisterAudioSessionNotification(_eventHandler);
CSCoreUtils.SafeRelease(ref _audioSessionControl);
CleanupResources(true);
CSCoreUtils.SafeRelease(ref _device);
//Step 4: Try to get new endpoint
try
{
_deviceEnumerator = _deviceEnumerator ?? new MMDeviceEnumerator();
_device = _deviceEnumerator.GetDefaultAudioEndpoint(DataFlow.Render, DeviceRole);
}
catch (CoreAudioAPIException exception)
{
Debug.WriteLine("Unable to retrieve new default device during stream switch: 0x" + exception.ErrorCode.ToString("x8"));
goto StreamSwitchErrorExit;
}
//Step 5: Re-instantiate the audio client on the new endpoint.
InitializeInternal();
_audioClient.Start();
_inStreamSwitch = false;
return(true);
StreamSwitchErrorExit:
_inStreamSwitch = false;
return(false);
}
private void TerminateStreamRouting()
{
if (_audioSessionControl != null)
{
_audioSessionControl.UnregisterAudioSessionNotification(_eventHandler);
CSCoreUtils.SafeRelease(ref _audioSessionControl);
}
if (_deviceEnumerator != null)
{
_deviceEnumerator.UnregisterEndpointNotificationCallback(_eventHandler);
CSCoreUtils.SafeRelease(ref _deviceEnumerator);
}
if (_streamSwitchCompleteEvent != null)
{
_streamSwitchCompleteEvent.Close();
_streamSwitchCompleteEvent = null;
}
}
