import processing.serial.*;
import beads.*;

AudioContext ac;
Glide carrierFreq, modFreqRatio;
Serial myPort;  // Create object from Serial class
int val=0;      
int val2=0;
int val3=0;
int val4=0;
int low=0;
int high=0;
int value=0;

void setup() {
  String portName = Serial.list()[4];
  myPort = new Serial(this, portName, 9600);
  size(600,600);
  ac = new AudioContext();
  
   //we use the Glide object because it smooths the input.
  carrierFreq = new Glide(ac, 1000);
  modFreqRatio = new Glide(ac, 1);
  
   if ( myPort.available()>0) {  // If data is available,
      println(val);

    val = val2; 
    val2 = val3; 
    val3 = val4; 
    val4 = myPort.read();    // read it and store it in val
  }
 
  Function modFreq = new Function(carrierFreq, modFreqRatio) {
    public float calculate() {
      return x[0] * x[1];
    }
  };
  

  
   if(val==1 && val2==2 && val3==3 && val4==4){
        background(255);             // Set background to white
 
     low=myPort.read();
     high=myPort.read();
     value=256*high + low;
   }
  WavePlayer freqModulator = new WavePlayer(ac, modFreq, Buffer.SINE);
  Function carrierMod = new Function(freqModulator, carrierFreq) {
    public float calculate() {
      return x[0] * 400.0 + x[1];    
    }
  };
  WavePlayer wp = new WavePlayer(ac, carrierMod, Buffer.SINE);
  Gain g = new Gain(ac, 1, 0.1);
  g.addInput(wp);
  ac.out.addInput(g);
  ac.start();
}

/*
 * Drawing colors.
 */
color fore = color(0,0,0);
color back = color(255,255,255);

/*
 * Just do the work straight into Processing's draw() method.
 */
void draw() {
  loadPixels();
  //set the background
  Arrays.fill(pixels, back);
  //scan across the pixels
  for(int i = 0; i < width; i++) {
    //for each pixel work out where in the current audio buffer we are
    int buffIndex = i * ac.getBufferSize() / width;
    //then work out the pixel height of the audio data at that point
    int vOffset = (int)((1 + ac.out.getValue(0, buffIndex)) * height / 2);
    //draw into Processing's convenient 1-D array of pixels
    pixels[vOffset * height + i] = fore;
  }
  updatePixels();
  //mouse listening code here
  //println(value);
  carrierFreq.setValue((float)15000*value);
  
}