// LiveInput example for Processing V90
// Description: Shows FFT spectrum and volume level for the active sound-input on your mahcine.
// For PC: use the 'Sounds & Audio Devices' menu in the control panel to choose your input; Mic, wave, etc.
// For Mac: the current microphone device will be used as input.
// By: Amit Pitaru,  July 16th 2005

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

void setup(){
   size(512,200);
   Sonia.start(this); // Start Sonia engine.
   LiveInput.start(256); // Start LiveInput and return 256 FFT frequency bands.
}

void draw(){

   background(0,30,0);
   getMeterLevel(); // Show meter-level reading for Left/Right channels.
   getSpectrum(); // Show FFT reading
   
}

void getSpectrum(){
   strokeWeight(0);
   stroke(0,230,0);
  // 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++){
      line(i*2, height, i*2, height - LiveInput.spectrum[i]/10);
   }
}

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();
   float meterDataRight = LiveInput.getLevel();

   // draw a volume-meter for each channel.
   fill(0,100,0);
   float left = meterDataLeft*height;
   float right = meterDataRight*height; 
   rect(width/2 - 100, height, 100 , left*-1);
   rect(width/2 , height, 100, right*-1);
}

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