public void Process(AudioAnalysisSample frame)
{
SpectrumHistory.Add(frame.Spectrum);
filterParams.Frame = frame;
// generate downmixed spectrums
for (int i = 0; i < Globals.SPECTRUMRES; i++)
{
filterParams.Spectrum[i] = (frame.Spectrum[i * 2] + frame.Spectrum[i * 2 + 1]) * 0.5f;
//filterParams.SpectrumDB[i] = (float)Decibels.LinearToDecibels(filterParams.Spectrum[i]);
filterParams.SpectrumDB[i] = filterParams.Spectrum[i].NormDB();
//s.rgb = 20.0 * log(s.rgb);
//s.rgb = max(vec3(0.0), vec3(1.0) + ((s.rgb + vec3(20.0)) / vec3(200.0)));
}
for (int i = 0; i < Globals.SPECTRUM2RES; i++)
{
filterParams.Spectrum2[i] = frame.Spectrum2[i];
filterParams.Spectrum2DB[i] = frame.Spectrum2[i].NormDB();
}
// run filters
foreach (var filter in Filters)
{
var results = filter.GetValues(filterParams);
for (int i = 0; i < filter.OutputSlotCount; i++)
{
frame.AudioData[filter.OutputOffset + i] = results[i];
}
}
}
//private float[] mixtemp = new float[outputResolution2];
private void AddSample(float[] samples, int offset, int channels)
{
// mono source - copy to both channels
if (channels == 1)
{
fft[0].Add(samples[offset]);
fft[1].Add(samples[offset]);
fft2.Add(samples[offset]);
}
else
{
fft[0].Add(samples[offset]);
fft[1].Add(samples[offset + 1]);
fft2.Add((samples[offset] + samples[offset + 1]) * 0.5f);
}
sampleCounter++;
if (sampleCounter > frameInterval)
{
float[] f = new float[Globals.SPECTRUMRES * MAXCHANNELS];
for (int i = 0; i < MAXCHANNELS; i++)
{
fft[i].GenerateTo(f, i, Globals.SPECTRUMRES, MAXCHANNELS);
}
float[] f2 = new float[Globals.SPECTRUM2RES];
//var mixtemp = MixChannels(f, outputResolution * MAXCHANNELS, MAXCHANNELS).Select(x => x / (float)MAXCHANNELS).ToArray();
//fft2.Add(Resample(mixtemp, outputResolution2, x => x * x));
fft2.GenerateTo(f2, 0, Globals.SPECTRUM2RES);
var analysisSample = new AudioAnalysisSample(f, f2, new float[Globals.AUDIODATASIZE], frameInterval /*, analyser.OutputNames*/);
analyser.Process(analysisSample);
SpectrumReady?.Invoke(this, new FftEventArgs(analysisSample));
sampleCounter = 0;
}
}
public FftEventArgs(AudioAnalysisSample sample)
{
Sample = sample;
}
