package jmsltestsuite;

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

import com.softsynth.jmsl.JMSLRandom;
import com.softsynth.jsyn.AppletFrame;
import com.softsynth.jsyn.EnvelopePlayer;
import com.softsynth.jsyn.LineOut;
import com.softsynth.jsyn.SawtoothOscillatorBL;
import com.softsynth.jsyn.Synth;
import com.softsynth.jsyn.SynthCircuit;
import com.softsynth.jsyn.SynthEnvelope;
import com.softsynth.jsyn.SynthNote;
import com.softsynth.jsyn.util.BussedVoiceAllocator;

/** 
 * Deprecated demo. Don't bother with this unless you are intrerested in ancient history 
 * or unless you want to rewrite in v103 using TunedSynthNoteInstrument as an exercise
 * 
 *  Hit the BANG button: play a SynthNote pulled from a polyphonic allocator,
	sustain for a random hold time, use a random pitch in 13 tone ET
	
	Demonstrates:
	Using a BussedVoiceAllocator to implement polyphonic SynthNotes 
	Using a JSyn envelope player to cue up the attack/sustin portion of a sound
	Using a JSyn envelope player to release sound and autostop the circuit
	Calling SynthNote.note() to fire a sound with a hold time.	
	Using JMSLRandom to randomize frequencies and amplitudes
	
	
@author Nick Didkovsky 5/28/01 1:09PM Nancy
*/
public class TestNoteOnNoteOff extends java.applet.Applet implements ActionListener {

	Button bang;
	BussedVoiceAllocator allocator;
	LineOut out;

	public void init() {
		JMSLRandom.randomize();
		add(bang = new Button("BANG FREQUENTLY AND HEAR SOUNDS OVERLAP"));
		bang.addActionListener(this);
	}

	public void start() {
		Synth.startEngine(0);
		// build an allocator that return up to 8 voices
		allocator = new BussedVoiceAllocator(8) {
			public SynthCircuit makeVoice() {
				SynthCircuit circuit = new SustainingSynthNote();
				return addVoiceToMix(circuit);
			}
		};

		out = new LineOut();
		allocator.output.connect(0, out.input, 0);
		allocator.output.connect(0, out.input, 1);
		out.start();

		/* Synchronize Java display. */
		getParent().validate();
		getToolkit().sync();

	}

	public void stop() {
		Synth.stopEngine();
	}

	void handleBang() {
		double hold = JMSLRandom.choose(0.3, 5.0);
		double frequency = 220 * Math.pow(2.0, JMSLRandom.choose(13) / 13.0);
		double amplitude = JMSLRandom.choose(0.1, 0.3);
		int onTime = Synth.getTickCount();
		int holdTime = (int) (Synth.getTickRate() * hold);
		// request a voice from the allocator for the specified duration
		SynthNote voice = (SynthNote) allocator.steal(onTime + holdTime);
		// call noteon/noteoff in one convenient method
		voice.note(onTime, holdTime, frequency, amplitude);
	}

	public void actionPerformed(ActionEvent e) {
		Object source = e.getSource();
		if (source == bang)
			handleBang();
	}

	public static void main(String args[]) {
		java.applet.Applet applet = new TestNoteOnNoteOff();
		AppletFrame f = new AppletFrame("Test Polyphonic SynthNotes sustaining for random duration", applet);
		f.setSize(600, 200);
		f.setVisible(true);
		f.test();
	}

}

class SustainingSynthNote extends SynthNote {

	SawtoothOscillatorBL osc;
	EnvelopePlayer ampEnvPlayer;
	SynthEnvelope ampEnv;

	public SustainingSynthNote() {

		add(osc = new SawtoothOscillatorBL());
		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);

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

		double[] envData = { 0.06, 1.0, 0.2, 0.1, 0.5, 0.0 };
		ampEnv = new SynthEnvelope(envData);
	}

	public void setStage(int time, int stage) {
		switch (stage) {
			case 0 : // note on by convention
				start(time);
				ampEnvPlayer.envelopePort.clear(time);
				ampEnvPlayer.envelopePort.queue(time, ampEnv, 0, 2); // queue first two frames, the attack
				break;
			case 1 : // note off by convention
				ampEnvPlayer.envelopePort.clear(time);
				ampEnvPlayer.envelopePort.queue(time, ampEnv, 2, 1, Synth.FLAG_AUTO_STOP); // release and shut off circuit
				break;
			default :
				break;
		}
	}

}