/// <summary>
/// Initializes the audio renderer.
/// Call the Play Method to start reading samples.
/// </summary>
private void Initialize()
{
Destroy();
// Check the wave format
if (WaveFormat.BitsPerSample != 16 || WaveFormat.Channels != 2)
{
throw new NotSupportedException("Wave Format has to be 16-bit and 2-channel.");
}
// Release the audio device always upon exiting
if (Application.Current is Application app)
{
app.Dispatcher?.BeginInvoke(new Action(() => { app.Exit += OnApplicationExit; }));
}
// Enumerate devices. The default device is the first one so we check
// that we have more than 1 device (other than the default stub)
var hasAudioDevices = MediaElement.RendererOptions.UseLegacyAudioOut ?
LegacyAudioPlayer.EnumerateDevices().Count > 1 :
DirectSoundPlayer.EnumerateDevices().Count > 1;
// Check if we have an audio output device.
if (hasAudioDevices == false)
{
HasFiredAudioDeviceStopped = true;
this.LogWarning(Aspects.AudioRenderer,
"No audio device found for output.");
return;
}
// Initialize the SoundTouch Audio Processor (if available)
AudioProcessor = (SoundTouch.IsAvailable == false) ? null : new SoundTouch();
if (AudioProcessor != null)
{
AudioProcessor.SetChannels(Convert.ToUInt32(WaveFormat.Channels));
AudioProcessor.SetSampleRate(Convert.ToUInt32(WaveFormat.SampleRate));
}
// Initialize the Audio Device
AudioDevice = MediaElement.RendererOptions.UseLegacyAudioOut ?
new LegacyAudioPlayer(this, MediaElement.RendererOptions.LegacyAudioDevice?.DeviceId ?? -1) as IWavePlayer :
new DirectSoundPlayer(this, MediaElement.RendererOptions.DirectSoundDevice?.DeviceId ?? DirectSoundPlayer.DefaultPlaybackDeviceId);
// Create the Audio Buffer
SampleBlockSize = Constants.AudioBytesPerSample * Constants.AudioChannelCount;
var bufferLength = WaveFormat.ConvertMillisToByteSize(2000); // 2-second buffer
AudioBuffer = new CircularBuffer(bufferLength);
AudioDevice.Start();
}
/// <summary>
/// Initializes the audio renderer.
/// Call the Play Method to start reading samples
/// </summary>
private void Initialize()
{
Destroy();
// Release the audio device always upon exiting
if (Application.Current != null)
{
GuiContext.Current.EnqueueInvoke(DispatcherPriority.Render, () =>
Application.Current.Exit += OnApplicationExit);
}
// Enumerate devices. The default device is the first one so we check
// that we have more than 1 device (other than the default stub)
var hasAudioDevices = MediaElement.RendererOptions.UseLegacyAudioOut ?
LegacyAudioPlayer.EnumerateDevices().Count > 1 :
DirectSoundPlayer.EnumerateDevices().Count > 1;
// Check if we have an audio output device.
if (hasAudioDevices == false)
{
WaitForReadyEvent.Complete();
HasFiredAudioDeviceStopped = true;
this.LogWarning(Aspects.AudioRenderer,
"No audio device found for output.");
return;
}
// Initialize the SoundTouch Audio Processor (if available)
AudioProcessor = (SoundTouch.IsAvailable == false) ? null : new SoundTouch();
if (AudioProcessor != null)
{
AudioProcessor.SetChannels(Convert.ToUInt32(WaveFormat.Channels));
AudioProcessor.SetSampleRate(Convert.ToUInt32(WaveFormat.SampleRate));
}
// Initialize the Audio Device
AudioDevice = MediaElement.RendererOptions.UseLegacyAudioOut ?
new LegacyAudioPlayer(this, MediaElement.RendererOptions.LegacyAudioDevice?.DeviceId ?? -1) as IWavePlayer :
new DirectSoundPlayer(this, MediaElement.RendererOptions.DirectSoundDevice?.DeviceId ?? DirectSoundPlayer.DefaultPlaybackDeviceId);
// Create the Audio Buffer
SampleBlockSize = Constants.Audio.BytesPerSample * Constants.Audio.ChannelCount;
var bufferLength = WaveFormat.ConvertMillisToByteSize(2000); // 2-second buffer
AudioBuffer = new CircularBuffer(bufferLength);
AudioDevice.Start();
}