/*
 * 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 play a melody made up of uniformly random pitches, durations, amplitudes, & hold times
 * 
 * @author Nick Didkovsky, (c) 2004 All rights reserved, Email: didkovn@mail.rockefeller.edu
 *  
 */
public class RandomJSynMusicJobMelody extends java.applet.Applet {

    JMSLMixerContainer mixer;
    Instrument instrument;
    MusicJob randomMelodyMaker;

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

    public void start() {
        synchronized (JMSL.class) {
            JMSLRandom.randomize();
            initJMSL();
            initMusicDevices();
            buildMixer();
            buildInstrument();
            buildRandomMelodyMaker();
            launchRandomMelodyMaker();
        }
    }

    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);
    }

    void buildRandomMelodyMaker() {
        randomMelodyMaker = new MusicJob() {

            public double repeat(double playTime) {
                double duration = JMSLRandom.choose(4) * 0.125;
                double pitch = JMSLRandom.choose(60, 72);
                double amplitude = JMSLRandom.choose(0.2, 0.5);
                double hold = JMSLRandom.choose(0.1, 0.5);
                double[] data = { duration, pitch, amplitude, hold };
                return getInstrument().play(playTime, 1.0, data);
            }

        };
        randomMelodyMaker.setInstrument(instrument);
        randomMelodyMaker.setRepeats(10000);
    }

    private void launchRandomMelodyMaker() {
        randomMelodyMaker.launch(JMSL.now());
    }

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