public void DataAvailable(double[] L, double [] R)
{
if ((buf_wr + 1) % buffers == buf_rd)
{
overflow += L.Length;
return;
}
for (int i = 0; i < L.Length; i++)
{
if (buffer[buf_wr].add(L[i], R[i]))
{
// Buffer Full
buffer[buf_wr].resetFill();
if (buf_last >= 0)
{
fftx.run(buffer[buf_last].wavel, buffer[buf_wr].wavel, buffer[buf_wr].fftl1, 0);
fftx.run(buffer[buf_last].waver, buffer[buf_wr].waver, buffer[buf_wr].fftr1, 1);
}
fftx.run(null, buffer[buf_wr].fft1, 2);
fftx.run(buffer[buf_wr].wavel, buffer[buf_wr].fftl2, 0);
fftx.run(buffer[buf_wr].waver, buffer[buf_wr].fftr2, 1);
fftx.run(null, buffer[buf_wr].fft2, 2);
// Inc or overflow
buf_last = buf_wr;
if ((buf_wr + 1) % buffers == buf_rd)
{
overflow += L.Length - i;
return;
}
buf_wr = (buf_wr + 1) % buffers;
}
}
}
private void RecorderOnDataAvailable(object sender, WaveInEventArgs waveInEventArgs)
{
int bnext = (buf_wr + 1) % buffers;
int blast = (buf_wr + buffers - 1) % buffers;
if (bnext == buf_rd)
{
// Overflow
overflow++;
return;
}
if (testtone)
{
//Test Tones instead of the audio signal - for calibration or testing
double w = 2 * Math.PI * testtone_freq;
double tau = 1 / testtone_freq;
for (int i = 0; i < 2400; i++)
{
double t = (double)i / 48000.0 + testtone_ofs;
int v = (int)Math.Floor(Math.Sin(w * t) * 32767.0 * testtone_amp + 0.5);
buffer[buf_wr].wavel[i] = v;
buffer[buf_wr].waver[i] = -v;
buffer[buf_wr].wave[i] = v - v;
}
testtone_ofs = (double)2400.0 / 48000.0 + testtone_ofs;
testtone_ofs = testtone_ofs - Math.Floor(testtone_ofs / tau) * tau;
// testtone_ofs = 0;
}
else
{
for (int i = 0; i < 2400; i++)
{
buffer[buf_wr].wavel[i] = BitConverter.ToInt16(waveInEventArgs.Buffer, i * 4);
buffer[buf_wr].waver[i] = BitConverter.ToInt16(waveInEventArgs.Buffer, i * 4 + 2);
buffer[buf_wr].wave[i] = buffer[buf_wr].wavel[i] + buffer[buf_wr].waver[i];
}
}
fftx.run(buffer[blast].wavel, buffer[buf_wr].wavel, buffer[buf_wr].fftl1, 0);
fftx.run(buffer[blast].waver, buffer[buf_wr].waver, buffer[buf_wr].fftr1, 1);
fftx.run(null, buffer[buf_wr].fft1, 2);
fftx.run(buffer[buf_wr].wavel, buffer[buf_wr].fftl2, 0);
fftx.run(buffer[buf_wr].waver, buffer[buf_wr].fftr2, 1);
fftx.run(null, buffer[buf_wr].fft2, 2);
buf_wr = bnext;
}