/*
 * Created on Dec 3, 2019 by nick
 *
 */
package jmslexamples.jsyn2;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JFrame;

import com.softsynth.jmsl.*;
import com.softsynth.jmsl.jsyn2.*;
import com.softsynth.jmsl.view.JMSLScrollbar;
import com.softsynth.jmsl.view.JMSLScrollbarProcessor;

/**
 * For Cindy Bui.
 * 
 * Play a MusicShape with a JSynUnitVoiceInstrument. Use new feature to retrieve voices active at a
 * given timestamp, to change their parameters instantly while the MusicShape is playing.
 * 
 * @author nick Didkovsky, (c) 2019 Nick Didkovsky, nick@didkovsky.com
 *
 */

public class ChangeActiveVoices implements JMSLScrollbarProcessor {

    JMSLMixerContainer mixer;
    JSynUnitVoiceInstrument instrument;
    MusicShape musicShape;

    void initJSyn() {
        JSynMusicDevice dev = JSynMusicDevice.instance();
        dev.open();
    }

    void initJMSL() {
        JMSL.clock.setAdvance(0.2);
    }

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

    private void buildInstrument() {
        instrument = new JSynUnitVoiceInstrument(8, com.jsyn.instruments.SubtractiveSynthVoice.class.getName());
        mixer.addInstrument(instrument);
    }

    void buildMusicShape() {
        musicShape = new MusicShape(instrument.getDimensionNameSpace());
        musicShape.setInstrument(instrument);
        musicShape.prefab();

        musicShape.print();
        musicShape.setRepeats(10000);
    }

    void launchMusicShape() {
        musicShape.launch(JMSL.now());
    }

    JMSLScrollbar getScrollbar() {
        JMSLScrollbar myScrollbar = new JMSLScrollbar(this, 50, 0, 100);
        myScrollbar.setSize(320, 25);
        return myScrollbar;
    }

    public void JMSLScrollbarValueChanged(JMSLScrollbar jsb) {
        System.out.println("scrollbar value=" + jsb.getValue());
        double proportion = (double)jsb.getValue() / 100;
        double range = instrument.getDimensionNameSpace().getHighLimit(4) - instrument.getDimensionNameSpace().getLowLimit(4);
        double newPitchMod = instrument.getDimensionNameSpace().getLowLimit(4) + proportion * range;
        System.out.println("Setting pitchMod of all active voices to " + newPitchMod);
        
        // fetch a vector of currently active voices
        Vector activeVoices = instrument.getActiveJSynVoices(JMSL.realTime());
        for (Enumeration e = activeVoices.elements(); e.hasMoreElements();) {
            PerformedJSynVoice voice = (PerformedJSynVoice) e.nextElement();
            System.out.println("Voice:\ttoken=" + voice.getVoiceToken() + ", ontime=" + voice.getOnTime() + ", offtime="
                    + voice.getOffTime() + ", pitch=" + voice.getData()[1]);
            // let's have this affect the pitch mod dimension 4
            
            double[] storedData = voice.getData();
            storedData[4] = newPitchMod;
            instrument.update(JMSL.now(), 1.0, storedData, voice.getVoiceToken());
        }
    }

    public static void main(String[] args) {
        ChangeActiveVoices demo = new ChangeActiveVoices();
        demo.initJMSL();
        demo.initJSyn();
        demo.buildMixer();
        demo.buildInstrument();
        demo.buildMusicShape();
        demo.launchMusicShape();

        JFrame jf = new JFrame("Close to quit");
        jf.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                JMSL.closeMusicDevices();
                System.exit(0);
            }
        });
        jf.add(demo.getScrollbar());
        jf.pack();
        jf.setVisible(true);

    }

}