public NAudioStreamAudioSourceToWaveProviderAdapterSimple(IStreamAudioSource source)
{
this.WaveFormat = NAudioUtilities.ToNAudioWaveFormat(source.Format);
}
/// <summary>
/// Initializes this resampler with the given input audio source and output format.
/// Attaches to the given source's event to start resampling as soon as <see cref="IStreamAudioSource.DataAvailable"/> is raised.
/// </summary>
/// <param name="audioSource"></param>
/// <param name="outputFormat"></param>
public void Initialize(IStreamAudioSource audioSource, WaveStreamAudioFormat outputFormat)
{
this.WaveProviderAdapter = new NAudioStreamAudioSourceToWaveProviderAdapterSimple(audioSource);
this.Resampler = new MediaFoundationResampler(this.WaveProviderAdapter, NAudioUtilities.ToNAudioWaveFormat(outputFormat));
//set this *after* we initialize the resampler. if it throws, we won't dispose the input audio source by accident
this.WrappedAudioSource = audioSource;
this.Format = outputFormat;
//handle events from the wrapped source
audioSource.DataAvailable += (s, e) =>
{
//feed into our adapter
WaveProviderAdapter.Write(e);
//read from resampler and trigger our own output event
int read;
while ((read = Resampler.Read(Buffer, 0, Buffer.Length)) > 0)
{
DataAvailable?.Invoke(this, new StreamAudioSourceDataEvent()
{
Buffer = new ArraySegment <byte>(Buffer, 0, read),
Format = Format
});
}
};
}