/*
 * Created by Nick on Jan 3, 2005
 *
 */
package jmslexamples.simple;

import java.net.MalformedURLException;
import java.net.URL;

import com.softsynth.jmsl.*;
import com.softsynth.jmsl.midi.MidiIO_JavaSound;
import com.softsynth.jmsl.midi.MidiInstrument;

/**
 * Use a SequentialCollection to ABAB "song form" with Midi piano
 * 
 * If the Java installation that is running this applet does not have a JavaSound MIDI soundbank, your classes folder 
 * (ie your applet's codebase) must contain a folder called javasound containing a soundbank called soundbank-min.gm
 * (or call subfolder and the soundbank whatever you want and change the name in the initJavaSoundMidi() method below
 * 
 * @author Nick Didkovsky, (c) 2004 All rights reserved, Email: didkovn@mail.rockefeller.edu
 *  
 */
public class MIDISong extends java.applet.Applet {

    JMSLMixerContainer mixer;
    Instrument instrument;

    SequentialCollection mySong;

    public void init() {
        JMSL.setIsApplet(true);
    }

    public void start() {
        synchronized (JMSL.class) {
            initJMSL();
            initMusicDevices();
            buildMixer();
            buildInstrument();
            buildSong();
            launchSong();
        }
    }

    private void initJMSL() {
        JMSL.scheduler = new EventScheduler();
        JMSL.scheduler.start();
        JMSL.clock.setAdvance(0.1);
    }

    private void initMusicDevices() {
        JMSL.clock = new DefaultMusicClock();
        initJavaSoundMidi();
    }

    private void initJavaSoundMidi() {
        JMSL.midi = MidiIO_JavaSound.instance();
        try {
            ((MidiIO_JavaSound) JMSL.midi).setSoundbankURL(new URL(getCodeBase(), "javasound/soundbank-min.gm"));
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        JMSL.midi.edit(new java.awt.Frame());
        JMSL.midi.open();
    }

    private void buildMixer() {
        mixer = new JMSLMixerContainer();
        mixer.start();
    }

    private void buildInstrument() {
        instrument = new MidiInstrument(1);
        mixer.addInstrument(instrument);
    }

    void buildSong() {
        MusicShape verse = new MusicShape(4);
        verse.setInstrument(instrument);
        verse.add(0.25, 60, 80, 0.5);
        verse.add(0.25, 62, 80, 0.25);
        verse.add(0.75, 65, 80, 0.2);
        verse.setRepeats(4);

        MusicShape chorus = new MusicShape(4);
        chorus.setInstrument(instrument);
        chorus.add(0, 50, 90, 0.75);
        chorus.add(1.0, 59, 90, 0.75);
        chorus.add(0, 53, 90, 0.75);
        chorus.add(1.0, 57, 90, 0.75);
        chorus.setRepeats(2);

        mySong = new SequentialCollection();
        mySong.add(verse);
        mySong.add(chorus);
        mySong.add(verse);
        mySong.add(chorus);

    }

    private void launchSong() {
        mySong.launch(JMSL.now());
    }

    public void stop() {
        synchronized (JMSL.class) {
            mySong.finishAll();
            try {
                mySong.waitForDone();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            JMSL.scheduler.stop();
            JMSL.closeMusicDevices();
        }
    }
}