import pitaru.sonia_v2_9.*; // automcatically added when importing the library from the processing menu.

void setup(){
   size(1024,400);
   noStroke ();
   Sonia.start(this); // Start Sonia engine.
   LiveInput.start(256); // Start LiveInput and return 256 FFT frequency bands.
}

void draw(){


   getMeterLevel(); // Show meter-level reading for Left/Right channels.
   getSpectrum(); // Show FFT reading
   
}

void getSpectrum(){
 
  // populate the spectrum array with FFT values.
   LiveInput.getSpectrum();
   // draw a bar for each of the elements in the spectrum array.
   // Note - the current FFT math is done in Java and is very raw. expect optimized alternative soon.
   for ( int i = 0; i < LiveInput.spectrum.length; i++){
      ellipse (i*20, height/2, LiveInput.spectrum[i]/30, LiveInput.spectrum[i]/30);
   }
}

void getMeterLevel(){
   // get Peak level for each channel (0 -> Left , 1 -> Right)
   // Value Range: float from 0.0 to 1.0
   // Note: use inputMeter.getLevel() to combine both channels (L+R) into one value.
   float meterDataLeft = LiveInput.getLevel(0);
   float meterDataRight = LiveInput.getLevel(1);

   // draw a volume-meter for each channel.
   
   float left = meterDataLeft*255;
   float right = meterDataRight*255*2; 
   fill(left);
   background(255-left);
}

// Safely close the sound engine upon Browser shutdown.
public void stop(){
    Sonia.stop();
    super.stop();
}