/// <summary>
/// Stops rendering audio data.
/// </summary>
public void StopRendering()
{
if (this.wasapiRenderClient != null)
{
this.wasapiRenderClient.Dispose();
this.wasapiRenderClient = null;
}
if (this.audioBufferStream != null)
{
this.audioBufferStream.Dispose();
this.audioBufferStream = null;
}
}
/// <summary>
/// Starts rendering audio data.
/// </summary>
/// <param name="maxBufferSeconds">
/// The maximum duration of audio that can be buffered for playback.
/// </param>
/// <param name="targetLatencyInMs">
/// The target maximum number of milliseconds of acceptable lag between
/// playback of samples and live sound being produced.
/// </param>
/// <param name="gain">
/// The gain to be applied prior to rendering the audio.
/// </param>
/// <param name="inFormat">
/// The input audio format.
/// </param>
public void StartRendering(double maxBufferSeconds, int targetLatencyInMs, float gain, WaveFormat inFormat)
{
if (this.wasapiRenderClient != null)
{
this.StopRendering();
}
// Create an audio buffer to buffer audio awaiting playback.
this.audioBufferStream = new CircularBufferStream((long)Math.Ceiling(maxBufferSeconds * inFormat.AvgBytesPerSec), false);
this.wasapiRenderClient = new WasapiRenderClient(this.audioDevice);
// Create a callback delegate and marshal it to a function pointer. Keep a
// reference to the delegate as a class field to prevent it from being GC'd.
this.callbackDelegate = new AudioDataRequestedCallback(this.AudioDataRequestedCallback);
// initialize the renderer with the desired parameters
this.wasapiRenderClient.Initialize(targetLatencyInMs, gain, inFormat, this.callbackDelegate);
// tell WASAPI to start rendering
this.wasapiRenderClient.Start();
}