SoftMidiMixerTest.java

/*
 * Created on Jan 30, 2007
 *
 * Copyright (c) 2006-2007 P.J.Leonard
 * 
 * http://www.frinika.com
 * 
 * This file is part of Frinika.
 * 
 * Frinika is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.

 * Frinika is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with Frinika; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package com.frinika.codeexamples;

import java.util.List;

import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiMessage;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Receiver;
import javax.sound.midi.ShortMessage;
import javax.sound.midi.Transmitter;
import javax.swing.JFrame;

import com.frinika.voiceserver.AudioContext;
import com.frinika.voiceserver.Voice;
import com.frinika.voiceserver.VoiceInterrupt;
import com.frinika.sequencer.gui.mixer.MidiDeviceMixerPanel;
import com.frinika.sequencer.gui.mixer.SynthWrapper;
import com.frinika.synth.envelope.MidiVolume;
/**
 * Create a custom softsynth mididevice and attach it to the mididevice mixer
 * 
 * @author Peter Johan Salomonsen
 *
 */
public class SoftMidiMixerTest {

	/**
	 * @param args
	 * @throws Exceptio{};n 
	 */
	public static void main(String[] args) throws Exception {
		new AudioContext();
		SynthWrapper sw = new SynthWrapper(null, new MidiDevice() {

			double level = MidiVolume.midiVolumeToAmplitudeRatio(100);
			Voice voice;
			{
				voice = new Voice() {
					double degree = 0.0;
					
					@Override
					public void fillBuffer(int startBufferPos, int endBufferPos, float[] buffer) {
						//System.out.println(startBufferPos+" "+endBufferPos+" "+level);
						for(int n=startBufferPos;n<endBufferPos;n+=2)
						{
							float val =  (float)((Math.sin((degree+=((440.0*Math.PI*2)/44100))%(Math.PI*2))*level) / 2.0);
							buffer[n]= val;
							buffer[n+1] = val;
						}
										
					}};
				AudioContext.getDefaultAudioContext().getVoiceServer().addTransmitter(voice);
			}
			public void close() {
				// TODO Auto-generated method stub
				
			}

			public Info getDeviceInfo() {
				// TODO Auto-generated method stub
				return null;
			}

			public int getMaxReceivers() {
				// TODO Auto-generated method stub
				return 0;
			}

			public int getMaxTransmitters() {
				// TODO Auto-generated method stub
				return 0;
			}

			public long getMicrosecondPosition() {
				// TODO Auto-generated method stub
				return 0;
			}

			public Receiver getReceiver() throws MidiUnavailableException {
				// TODO Auto-generated method stub
				return new Receiver() {

					public void close() {
						// TODO Auto-generated method stub
						
					}

					public void send(MidiMessage message, long timeStamp) {
						if(message instanceof ShortMessage)
						{
							final ShortMessage shm = (ShortMessage)message;
							if(shm.getCommand() == ShortMessage.CONTROL_CHANGE && shm.getData1()==7)
							{
								AudioContext.getDefaultAudioContext().getVoiceServer().interruptTransmitter(voice, new VoiceInterrupt() {

									@Override
									public void doInterrupt() {
										level = MidiVolume.midiVolumeToAmplitudeRatio(shm.getData2());
									}});
							}
						}
							
						
					}};
			}

			public List<Receiver> getReceivers() {
				// TODO Auto-generated method stub
				return null;
			}

			public Transmitter getTransmitter() throws MidiUnavailableException {
				// TODO Auto-generated method stub
				return null;
			}

			public List<Transmitter> getTransmitters() {
				// TODO Auto-generated method stub
				return null;
			}

			public boolean isOpen() {
				// TODO Auto-generated method stub
				return false;
			}

			public void open() throws MidiUnavailableException {
				// TODO Auto-generated method stub
				
			}});
		JFrame frame = new JFrame();
        frame.add(new MidiDeviceMixerPanel(null,sw));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(600,500);
        frame.setVisible(true);
        
		
	}

}