/*
* Stop the audio capture, if currently recording. Properly disposes member objects.
*/
private void StopCapture()
{
if (wasapiCapture.RecordingState == RecordingState.Recording)
{
wasapiCapture.Stop();
finalSource.Dispose();
notificationSource.Dispose();
wasapiCapture.Dispose();
SampleHandler = null;
}
}
/*
* Initializes WASAPI, initializes the sample handler, and sends captured data to it.
*/
private void StartCapture()
{
// Initialize hardware capture
wasapiCapture = new WasapiLoopbackCapture(25);
wasapiCapture.Initialize();
// Initialize sample handler
SampleHandler = new SampleHandler(wasapiCapture.WaveFormat.Channels);
// Configure per-block reads rather than per-sample reads
notificationSource = new SingleBlockNotificationStream(new SoundInSource(wasapiCapture).ToSampleSource());
notificationSource.SingleBlockRead += (s, e) => SampleHandler.Add(e.Left, e.Right);
finalSource = notificationSource.ToWaveSource();
wasapiCapture.DataAvailable += (s, e) => finalSource.Read(e.Data, e.Offset, e.ByteCount);
// Start capture
wasapiCapture.Start();
}