private void CTL(SpeexDspCtl ctl, ref float value)
{
var code = SpeexDspNativeMethods.speex_preprocess_ctl(_preprocessor, (int)ctl, ref value);
if (code != 0)
{
throw new InvalidOperationException(string.Format("Failed Speex CTL '{0}' Code='{1}'", ctl, code));
}
}
public void Reset()
{
if (_preprocessor != IntPtr.Zero)
{
SpeexDspNativeMethods.speex_preprocess_state_destroy(_preprocessor);
_preprocessor = IntPtr.Zero;
}
_preprocessor = SpeexDspNativeMethods.speex_preprocess_state_init(_frameSize, _format.SampleRate);
}
/// <summary>
/// Process a frame of data captured from the microphone
/// </summary>
/// <param name="frame"></param>
/// <returns>Returns true iff VAD is enabled and speech is detected</returns>
public void Process(ArraySegment <short> frame)
{
if (frame.Count != _frameSize)
{
throw new ArgumentException(string.Format("Incorrect frame size, expected {0} but given {1}", _frameSize, frame.Count), "frame");
}
using (var handle = frame.Pin())
SpeexDspNativeMethods.speex_preprocess_run(_preprocessor, handle.Ptr);
}
private float CTL_Float(SpeexDspCtl ctl)
{
var result = 0f;
var code = SpeexDspNativeMethods.speex_preprocess_ctl(_preprocessor, (int)ctl, ref result);
if (code != 0)
{
throw new InvalidOperationException(string.Format("Failed Speex CTL '{0}' Code='{1}'", ctl, code));
}
return(result);
}
public void Dispose()
{
if (_disposed)
{
return;
}
GC.SuppressFinalize(this);
if (_preprocessor != IntPtr.Zero)
{
SpeexDspNativeMethods.speex_preprocess_state_destroy(_preprocessor);
_preprocessor = IntPtr.Zero;
}
_disposed = true;
}
