// Example by Krister Olsson

import krister.Ess.*;

AudioStream myStream;
AudioInput myInput;

boolean inputReady=false;
float[] streamBuffer;

void setup() {
  size(256,200);
  background(0,0,255);

  // start up Ess
  Ess.start(this);

  // create a new AudioInput
  myInput=new AudioInput(); 

  // create a new AudioStream
  myStream=new AudioStream(myInput.size);
  streamBuffer=new float[myInput.size];

  // start
  myStream.start();
  myInput.start();
}

void draw() {
  stroke(255,10);

  // overlay an average of the samples in the input buffer
  float inc=myInput.buffer.length/256.0f;
  for (int i=0;i<256;i++) {
    int y=(int)(100+myInput.buffer[(int)(i*inc)]*100);
    
    line(i-200,y-200,i+200,y+200);
  }
}

void audioStreamWrite(AudioStream theStream) {
  // block until we have some input
  while (!inputReady); 
  
  System.arraycopy(streamBuffer,0,myStream.buffer,0,streamBuffer.length);
   
  inputReady=false;
}

void audioInputData(AudioInput theInput) {
  System.arraycopy(myInput.buffer,0,streamBuffer,0,myInput.size);
  
  inputReady=true;
}

// we are done, clean up Ess

public void stop() {
  Ess.stop();
  super.stop();
}