using System;
using OpenTK.Audio;

namespace AudioStreamer
{
	public class OpenALSource : BaseAudioSource, AudioOutput
	{
		public event NewAudioAvailable NewAudioAvailable;
		AudioCapture capture;

		public OpenALSource()
		{
			if (AudioCapture.AvailableDevices.Count < 1){
				throw new Exception("No Audio Device available");
			}

			capture = new AudioCapture(AudioCapture.DefaultDevice, 44100, OpenTK.Audio.OpenAL.ALFormat.Mono16, 8192);
		}

		public override void Start()
		{
			capture.Start();
		}

		public override void Stop()
		{
			capture.Stop();
		}

		public override void Source()
		{
			while (capture.AvailableSamples >= 64)
			{
				Int16[] chunk = new Int16[64];
				capture.ReadSamples(chunk, 64);

				if (NewAudioAvailable != null)
				{
					NewAudioAvailable.Invoke(this, chunk);
				}

			}
		}
	}
}