package jmsltutorial;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import com.softsynth.jsyn.*;

/** A SineOscillator SynthNote with an amplitude envelope.  noteOn() sustains, noteOff() releases.

	@author Nick Didkovsky, 11/21/2000 10:12AM, copyright (c) 2000 Nick Didkovsky, all rights reserved.
*/

public class SineSynthNote extends SynthNote {

	SineOscillator osc;
	EnvelopePlayer ampEnvPlayer;
	SynthEnvelope ampEnv;

	public SineSynthNote() {

		add(osc = new SineOscillator());
		add(ampEnvPlayer = new EnvelopePlayer());

		ampEnvPlayer.output.connect(osc.amplitude);

		//	expose the freq and amp of the sineOscillator as aliases
		addPort(frequency = osc.frequency);
		addPort(amplitude = ampEnvPlayer.amplitude);
		frequency.setup(0.0, 440.0, 1000.0);
		amplitude.setup(0.0, 0.5, 1.0);

		// expose an output port aliased to the oscillator's output
		addPort(output = osc.output, "Output");

		double[] envData = { 0.06, 1.0, 0.2, 0.6, 0.1, 0.0 };
		ampEnv = new SynthEnvelope(envData);
	}

	/** setStage will be called by noteOn after freq and ampo are set.  setStage(1) will be called by noteOff() */
	public void setStage(int time, int stage) {
		switch (stage) {
			case 0 :
				start(time);
				ampEnvPlayer.envelopePort.clear(time);
				ampEnvPlayer.envelopePort.queue(time, ampEnv, 0, 2); // queue first two frames, the attack
				break;
			case 1 :
				ampEnvPlayer.envelopePort.clear(time);
				ampEnvPlayer.envelopePort.queue(time, ampEnv, 2, 1, Synth.FLAG_AUTO_STOP); // release and shut off circuit
				break;
			default :
				break;
		}
	}

	/** Play some noteOn / noteOff()'s to test the SynthNote */
	public static void main(String args[]) {
		// open a Frame that will shut down SynthEngine and system.exit() when closed.
		Frame f = new Frame("Test SynthNote");
		f.setSize(320, 200);
		f.setVisible(true);
		f.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				Synth.stopEngine();
				System.exit(0);
			}
		});

		Synth.startEngine(0);
		SynthObject.enableTracking(true);

		// create a LineOut and a SynthNote, wire them together
		LineOut out = new LineOut();
		SineSynthNote synthNote = new SineSynthNote();
		synthNote.output.connect(0, out.input, 0);
		synthNote.output.connect(0, out.input, 1);
		out.start();

		// Simple loop that uses JSyn's event buffer to play a note every two seconds, each with a 1.5 second sustain
		// frequency changes by whole number ratio
		int now = Synth.getTickCount();
		int ticksPerSecond = (int) Synth.getTickRate();
		double freq = 440.0;
		for (int i = 0; i < 12; i++) {
			int onTime = now + i * ticksPerSecond * 2;
			int offTime = onTime + ticksPerSecond * 3 / 2;
			double ratio = 3 / 2.0;
			if (i % 2 == 1)
				ratio = 3 / 5.0;
			freq *= ratio;
			synthNote.noteOn(onTime, freq, 1.0);
			synthNote.noteOff(offTime);
		}
	}

}