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Audio visualizer

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Serge
2023-05-18 18:21:09 +02:00
parent 0eb6209eda
commit 06320afcb3
2 changed files with 49 additions and 48 deletions
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50
app/AnimeMatrix/AniMatrix.cs
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@@ -18,6 +18,9 @@ namespace GHelper.AnimeMatrix
public static bool IsValid => mat != null;
private static long lastPresent;
private static List<double> maxes = new List<double>();
public AniMatrix()
{
try
@@ -164,7 +167,7 @@ namespace GHelper.AnimeMatrix
}
private static void WaveIn_DataAvailable(object? sender, WaveInEventArgs e)
private void WaveIn_DataAvailable(object? sender, WaveInEventArgs e)
{
int bytesPerSamplePerChannel = AudioDevice.WaveFormat.BitsPerSample / 8;
int bytesPerSample = bytesPerSamplePerChannel * AudioDevice.WaveFormat.Channels;
@@ -194,7 +197,50 @@ namespace GHelper.AnimeMatrix
double[] paddedAudio = FftSharp.Pad.ZeroPad(AudioValues);
double[] fftMag = FftSharp.Transform.FFTmagnitude(paddedAudio);
mat.PresentAudio(fftMag);
PresentAudio(fftMag);
}
private void DrawBar(int pos, double h)
{
int dx = pos * 2;
int dy = 20;
byte color;
for (int y = 0; y < h - (h % 2); y++)
for (int x = 0; x < 2 - (y % 2); x++)
{
//color = (byte)(Math.Min(1,(h - y - 2)*2) * 255);
mat.SetLedPlanar(x + dx, dy + y, (byte)(h * 255 / 30));
mat.SetLedPlanar(x + dx, dy - y, 255);
}
}
void PresentAudio(double[] audio)
{
if (Math.Abs(DateTimeOffset.Now.ToUnixTimeMilliseconds() - lastPresent) < 70) return;
lastPresent = DateTimeOffset.Now.ToUnixTimeMilliseconds();
mat.Clear();
int size = 20;
double[] bars = new double[size];
double max = 2, maxAverage;
for (int i = 0; i < size; i++)
{
bars[i] = Math.Sqrt(audio[i] * 10000);
if (bars[i] > max) max = bars[i];
}
maxes.Add(max);
if (maxes.Count > 20) maxes.RemoveAt(0);
maxAverage = maxes.Average();
for (int i = 0; i < size; i++) DrawBar(20 - i, bars[i]*20/maxAverage);
mat.Present();
}