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80s Midi Synth
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import javax.sound.midi.ShortMessage | |
import javax.sound.midi.Synthesizer | |
import javax.sound.midi.Receiver | |
import javax.sound.midi.MidiSystem | |
import javax.sound.midi.MidiChannel | |
import javax.sound.midi.MidiMessage | |
import scala.swing._ | |
import scala.swing.event._ | |
import scala.util.Random | |
import javax.sound.midi.Instrument | |
object EightysSynth extends SimpleSwingApplication { | |
val synth = MidiSystem.getSynthesizer() | |
val synthRcvr = synth.getReceiver() | |
synth.open() | |
playTune(List(62,62,64,62,67,65,0, | |
62, 62, 64, 62 ,69, 67, 0, | |
62, 62, 74, 71, 67, 65, 64, 0, | |
72, 72, 71,67, 69, 67)) | |
def playNote(note : Integer, channel : Integer = 4) : Int = { | |
val myMsg = new ShortMessage(); | |
// Play the note Middle C (60) moderately loud | |
// (velocity = 93)on channel 4 (zero-based). | |
myMsg.setMessage(ShortMessage.NOTE_ON, channel, note, 100) | |
val pitch = note | |
synthRcvr.send(myMsg, -1) | |
pitch | |
} | |
def stopNote(note: Integer, channel: Integer = 4) { | |
val sm3 = new ShortMessage() | |
sm3.setMessage(ShortMessage.NOTE_OFF, channel, note, 0) | |
synthRcvr.send(sm3, -1) | |
} | |
def playTune(notes : List[Integer] ) { | |
val t2 = new Thread( new Runnable { | |
def run() { | |
notes.foreach( note => { | |
playNote(note, 3) | |
Thread.sleep(500) | |
stopNote(note, 3) | |
}) | |
} | |
} ) | |
t2.start() | |
} | |
def top = new MainFrame { | |
contents = new BoxPanel(Orientation.Vertical) { | |
val combobox = new ComboBox(synth.getAvailableInstruments()) | |
contents += new Label ("Uber Mega Piano from the 80s") | |
contents += combobox | |
listenTo(keys) | |
listenTo(combobox.selection) | |
listenTo(combobox.keys) | |
reactions += { | |
case KeyPressed(_, key, _, _) => { | |
playNote(keyToPitch(key)) | |
} | |
case KeyReleased (_,key,_,_) => { | |
stopNote(keyToPitch(key)) | |
} | |
case SelectionChanged(`combobox`) => { | |
val instr = combobox.selection.item | |
synth.loadInstrument(instr) | |
val sm2 = new ShortMessage( ); | |
sm2.setMessage(ShortMessage.PROGRAM_CHANGE, 4, instr.getPatch().getProgram(), 0); | |
synthRcvr.send(sm2, -1) | |
requestFocus | |
//synth.getChannels()(4).programChange(instr.getPatch().getBank(), instr.getPatch().getProgram()) | |
} | |
} | |
focusable = true | |
requestFocus | |
} | |
// Now even tuned | |
def keyToPitch(key: Key.Value): Int = key match { | |
case Key.Q => 53 | |
case Key.Key2 => 54 | |
case Key.W => 55 | |
case Key.Key3 => 56 | |
case Key.E => 57 | |
case Key.Key4 => 58 | |
case Key.R => 59 | |
case Key.Key5 => 0 | |
case Key.T => 60 // C | |
case Key.Key6 => 61 | |
case Key.Y => 62 // D | |
case Key.Key7 => 63 | |
case Key.U => 64 // E | |
case Key.Key8 => 0 | |
case Key.I => 65 // F | |
case Key.Key9 => 66 | |
case Key.O => 67 // G | |
case Key.Key0 => 68 | |
case Key.P => 69 // A | |
case Key.Minus => 70 | |
case Key.OpenBracket => 71 // B | |
case Key.CloseBracket => 72 | |
case x => println(x); 50 | |
} | |
} | |
} |
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Updated to actually be in tune