tepfer.pde

import themidibus.*; //Import the library

MidiBus myBus; // The MidiBus

void setup() {
  size(400, 400);
  background(0);

  MidiBus.list(); // List all available Midi devices on STDOUT. This will show each device's index and name.
  //                   Parent         In                   Out
  //                     |            |                     |
  //myBus = new MidiBus(this, "IncomingDeviceName", "OutgoingDeviceName"); // Create a new MidiBus using the device names to select the Midi input and output devices respectively.
  myBus = new MidiBus(this, 0, 3); // Create a new MidiBus with no input device and the default Java Sound Synthesizer as the output device.
}

void draw() {
  //myBus.sendControllerChange(0, 0, 0); // Send a controllerChange
  //delay(2000);
}

class PressNote implements Runnable {
  private int channel;
  private int pitch;
  private int velocity;
  private boolean on;

  public PressNote(int c, int p, int v, boolean on) {
    this.channel = c;
    this.pitch = p;
    this.velocity = v;
    this.on = on;
  }

  public void run() {
    println();
    if (on == true) {
      println("Note On:");
    } else {
      println("Note Off:");
    }

    println("--------");
    println("Channel:"+channel);
    println("Pitch:"+pitch);
    println("Velocity:"+velocity);
    // Play with delay!
    delay(100);

    // Play with pitch symmetry!
    pitch = 57 - (pitch - 60);
    if (pitch < 0) {
      pitch = pitch + 127;
    }
    if (on == true) {    
      myBus.sendNoteOn(channel, pitch, velocity);
    } else {
      myBus.sendNoteOff(channel, pitch, velocity);
    }
  }
}

void noteOn(int channel, int pitch, int velocity) {
  // Receive a noteOn
  PressNote myRunnable = new PressNote(channel, pitch, velocity, true);
  new Thread(myRunnable).start();
}

void noteOff(int channel, int pitch, int velocity) {
  // Receive a noteOff
  PressNote myRunnable = new PressNote(channel, pitch, velocity, false);
  new Thread(myRunnable).start();
}

void controllerChange(int channel, int number, int value) {
  // Receive a controllerChange
  println();
  println("Controller Change:");
  println("--------");
  println("Channel:"+channel);
  println("Number:"+number);
  println("Value:"+value);
}

void delay(int time) {
  int current = millis();
  while (millis () < current+time) Thread.yield();
}