private void thread_run()
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
while (threadRunning)
{
if (stopwatch.ElapsedMilliseconds > ThreadTargetElapsedTime.TotalMilliseconds)
{
stopwatch.Restart();
if (lastFFT != null)
{
if (smoothFFT == null || smoothFFT.Length != lastFFT.Length)
{
smoothFFT = new ComplexValue[lastFFT.Length];
}
if (lastFFT2 == null || lastFFT2.Length != lastFFT.Length)
{
lastFFT2 = new ComplexValue[lastFFT.Length];
}
for (int i = 0; i < lastFFT.Length; i++)
{
var smoothX = MathHelper.Lerp(smoothFFT[i].X, lastFFT[i].X, FFTSmoothness); // TODO: Time
var smoothY = MathHelper.Lerp(smoothFFT[i].Y, lastFFT[i].Y, FFTSmoothness);
smoothFFT[i] = new ComplexValue(smoothX, smoothY);
lastFFT2[i] = new ComplexValue(lastFFT[i].X, lastFFT[i].Y);
}
}
var samples = new List <AudioSample>(CurrentAnalyzedAudio.Samples);
samples.InsertRange(0, lastSamples);
var newBag = new ConcurrentBag <AudioSample>();
Interlocked.Exchange(ref lastSamples, newBag);
CurrentAnalyzedAudio = new AnalyzedAudio(lastFFT2, smoothFFT, samples.Take(SamplesHistory).ToArray());
}
}
}
public AudioAnalyzer(AudioPlayback audioPlayback, int samplesHistory = 3, float FFTSmoothness = 0.25f)
{
this.SamplesHistory = samplesHistory;
this.FFTSmoothness = FFTSmoothness;
this.ThreadTargetElapsedTime = TimeSpan.FromSeconds(1.0f / 60);
this.CurrentAnalyzedAudio = new AnalyzedAudio(new ComplexValue[0], new ComplexValue[0], new AudioSample[0]);
this.lastSamples = new ConcurrentBag <AudioSample>();
this.audioPlayback = audioPlayback;
this.audioPlayback.MaximumCalculated += audioGraph_MaximumCalculated;
this.audioPlayback.FftCalculated += audioGraph_FftCalculated;
// TODO: If the sound stops it stops raporting the data
this.threadRunning = true;
this.thread = new Thread(new ThreadStart(thread_run));
this.thread.Start();
}