Processing接收MIDI消息

直接上代码了

import themidibus.*; //Import the library
import javax.sound.midi.MidiMessage; 

MidiBus myBus; // The MidiBus 
 
void setup() {
  size(400, 400);
  background(0);

  MidiBus.list();  
 
  myBus = new MidiBus(this, 0, -1);  
}


void draw() { 
}


void midiMessage(MidiMessage message) { // You can also use midiMessage(MidiMessage message, long timestamp, String bus_name)
  // Receive a MidiMessage
  // MidiMessage is an abstract class, the actual passed object will be either javax.sound.midi.MetaMessage, javax.sound.midi.ShortMessage, javax.sound.midi.SysexMessage.
  // Check it out here http://java.sun.com/j2se/1.5.0/docs/api/javax/sound/midi/package-summary.html
  println();
  println("MidiMessage Data:");
  println("--------");
  println("Status Byte/MIDI Command:"+message.getStatus());
  for (int i = 1;i < message.getMessage().length;i++) { 
    println("Param "+(i+1)+": "+(int)(message.getMessage()[i] & 0xFF));
  }
}


void noteOn(Note note) {  
  // Receive a noteOn
  println();
  println("Note On:");
  println("--------");
  println("Channel:"+note.channel());
  println("Pitch:"+note.pitch());
  println("Velocity:"+note.velocity());
}

void noteOff(Note note) {
  // Receive a noteOff
  println();
  println("Note Off:");
  println("--------");
  println("Channel:"+note.channel());
  println("Pitch:"+note.pitch());
  println("Velocity:"+note.velocity());
}

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

void rawMidi(byte[] data) { // You can also use rawMidi(byte[] data, String bus_name)
  // Receive some raw data
  // data[0] will be the status byte
  // data[1] and data[2] will contain the parameter of the message (e.g. pitch and volume for noteOn noteOff)
  println();
  println("Raw Midi Data:");
  println("--------");
  println("Status Byte/MIDI Command:"+(int)(data[0] & 0xFF));
  // N.B. In some cases (noteOn, noteOff, controllerChange, etc) the first half of the status byte is the command and the second half if the channel
  // In these cases (data[0] & 0xF0) gives you the command and (data[0] & 0x0F) gives you the channel
  for (int i = 1;i < data.length;i++) {
    println("Param "+(i+1)+": "+(int)(data[i] & 0xFF));
  }
}

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

Live里把MIDI消息发送到IAC_BUS1 Processing里选取MIDI IN的port [0], 即IAC_BUS1，
执行代码后，接收到的MIDI消息被显示在Console窗口。