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

import com.softsynth.jmsl.*;
import com.softsynth.jmsl.jsyn.JSynInsFromClassName;
import com.softsynth.jmsl.jsyn.JSynMusicDevice;

/**
 * Use a MusicJob to turn an Instrument on() for five seconds, then shut it off(). Turn it on in
 * MusicJob.start(). Turn it off in MusicJob.stop(). Cause the delay with musicJob's startPause.
 * 
 * @author Nick Didkovsky, (c) 2004 All rights reserved, Email: didkovn@mail.rockefeller.edu
 *  
 */
public class InstrumentOnOff extends java.applet.Applet {

    JMSLMixerContainer mixer;
    Instrument instrument;

    MusicJob myMusicJob;

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

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

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

    private void initMusicDevices() {
        JSynMusicDevice.instance().open();
    }

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

    private void buildInstrument() {
        instrument = new JSynInsFromClassName(8, com.softsynth.jsyn.circuits.FilteredSawtoothBL.class.getName());
        mixer.addInstrument(instrument);
    }

    protected void buildMusicJob() {
        myMusicJob = new MusicJob() {
            public double start(double playTime) {
                JMSL.out.println("MusicJob.start() is calling instrument.on() ");
                if (getInstrument() != null) {
                    double[] data = MusicShape.getDefaultArray(getInstrument().getDimensionNameSpace());
                    getInstrument().on(playTime, 1.0, data);
                }
                return playTime;
            }

            public double stop(double playTime) {
                JMSL.out.println("MusicJob.stop() is calling instrument.off() ");
                if (getInstrument() != null) {
                    double[] data = MusicShape.getDefaultArray(getInstrument().getDimensionNameSpace());
                    getInstrument().off(playTime, 1.0, data);
                }
                return playTime;
            }
        };
        myMusicJob.setStartPause(5);
        myMusicJob.setInstrument(instrument);
    }

    private void launchMusicJob() {
        myMusicJob.launch(JMSL.now());
    }

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