/*
 * Created on Apr 7, 2005 
 *
 */
package didkovsky2604.applets;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

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

/**
 * Load a 1 sec. stereo sample and a 2 sec. stereo sample. Map them to two different pitches. Use a
 * MusicShape and a SimpleSamplePlayingInstrument to play them rhythmically.
 * 
 * @author Nick Didkovsky, didkovn@mail.rockefeller.edu
 *  
 */
public class StereoLoopingMusicApplet extends java.applet.Applet {
    SimpleSamplePlayingInstrument ins;
    JMSLMixerContainer mixer;
    Button startButton;
    Button stopButton;
    MusicShape musicShape;
    Label msgLabel;

    public void start() {
        synchronized (JMSL.class) {
            JMSL.setIsApplet(true);
            JMSL.setCodeBase(this.getCodeBase());

            JSynMusicDevice.instance().open();
            JMSL.clock.setAdvance(0.1);

            setLayout(new BorderLayout());

            buildFileLoaderListener();
            buildInstrument();
            buildMixer();

            add(mixer.getPanAmpControlPanel());
            buildMusicShape();
            buildControlPanel();
        }
    }

    public void stop() {
        synchronized (JMSL.class) {
            musicShape.finishAll();
            JMSL.closeMusicDevices();
        }
    }

    /**
     * notify users of file load progress
     */
    private void buildFileLoaderListener() {
        add(BorderLayout.NORTH, msgLabel = new Label("Message label"));
        JMSL.addFileLoaderListener(new FileLoaderListener() {

            public void fileLoading(String msg) {
                msgLabel.setText("Loading: " + msg);
            }

            public void fileDoneLoading(String msg) {
                msgLabel.setText(msg);
            }
        });
    }

    private void buildControlPanel() {
        Panel p = new Panel();
        p.setLayout(new FlowLayout());
        p.add(startButton = new Button("start"));
        p.add(stopButton = new Button("stop"));
        add(BorderLayout.SOUTH, p);
        startButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                startButton.setEnabled(false);
                stopButton.setEnabled(true);
                musicShape.launch(JMSL.now());
            }
        });
        stopButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                startButton.setEnabled(true);
                stopButton.setEnabled(false);
                musicShape.finishAll();
            }
        });
    }

    private void buildMusicShape() {
        musicShape = new MusicShape(4);
        musicShape.add(2, 60, 0.5, 2.0); // play 2 second sample mapped to pitch 60
        musicShape.add(1, 61, 0.4, 1.0); // play 1 second sample mapped to pitch 61
        musicShape.add(1, 61, 0.8, 1.0); // play it again louder
        musicShape.setInstrument(ins);
        musicShape.setRepeats(Integer.MAX_VALUE);
    }

    private void buildMixer() {
        mixer = new JMSLMixerContainer();
        mixer.addInstrument(ins);
        mixer.start();
        // we know ins is stereo so set panning by hand:
        mixer.panAmpChange(0, 0, 0.5);
        mixer.panAmpChange(1, 1, 0.5);

    }

    private void buildInstrument() {
        ins = new SimpleSamplePlayingInstrument("E:/jwork/eclipse_projects/didkovsky2604/"); // top
        // level
        // sample
        // directory
        ins.setNumChannels(2);
        ins.addSamplePitch("stereo_aif/TwoSeconds.aif", 60);
        ins.addSamplePitch("stereo_aif/OneSecond.aif", 61);
        ins.buildFromAttributes();
    }

}