import jm.audio.io.*;
import jm.audio.synth.*;
import jm.music.data.Note;
import jm.audio.AudioObject;

/**
 * A basic layered synthesis instrument
 * @author Andrew R. Brown after Andrew Sorensen
 */


public final class BreathyFluteInst extends jm.audio.Instrument{
	//----------------------------------------------
	// Attributes
	//----------------------------------------------
	/** The points to use in the construction of Envelopes */
	private EnvPoint[] pointArray = new EnvPoint[10];
	/** The points to use in the construction of Envelopes */
	private EnvPoint[] pointArray2 = new EnvPoint[10];
	/** The number of channels */
	private int channels;
	/** the sample rate passed to the instrument */
	private int sampleRate;

	//----------------------------------------------
	// Constructor
	//----------------------------------------------
	/**
	 * Basic default constructor to set an initial 
	 * sampling rate.
	 * @param sampleRate 
	 */
	public BreathyFluteInst(int sampleRate){
	    this(sampleRate, 1);
	}
	/**
	 * A constructor to set an initial 
	 * sampling rate and number of channels.
	 * @param sampleRate 
	 */
	public BreathyFluteInst(int sampleRate, int channels){
		this.sampleRate = sampleRate;
		this.channels = channels;
		// tone env
		EnvPoint[] tempArray = {
			new EnvPoint((float)0.0, (float)0.0),
			new EnvPoint((float)0.2, (float)1.0),
			new EnvPoint((float)0.5, (float)0.7),
			new EnvPoint((float)0.8, (float)0.5),
			new EnvPoint((float)1.0, (float)0.0)
		};
		pointArray = tempArray;
		// Noise env
		EnvPoint[] tempArray2 = {
			new EnvPoint((float)0.0, (float)0.0),
			new EnvPoint((float)0.05, (float)0.7),
			new EnvPoint((float)0.2, (float)0.1),
			new EnvPoint((float)1.0, (float)0.0)
		};
		pointArray2 = tempArray2;
	}

	//----------------------------------------------
	// Methods 
	//----------------------------------------------
	   
	/**
	 * Initialisation method used to build the objects that
	 * this instrument will use
	 */
	public void createChain(){
	    // main tone
		Oscillator wt = new Oscillator(this, Oscillator.SINE_WAVE, this.sampleRate, channels);
		Volume vol = new Volume(wt, (float)1.0);
		// overtone
		Oscillator wt2 = new Oscillator(this, Oscillator.SINE_WAVE, this.sampleRate, channels);
		wt2.setFrqRatio((float)2.001);
		Volume vol2 = new Volume(wt2, (float)0.5);
		// overtone
		Oscillator wt3 = new Oscillator(this, Oscillator.SINE_WAVE, this.sampleRate, channels);
		wt3.setFrqRatio((float)4.0);
		Volume vol3 = new Volume(wt3, (float)0.1);
		// breath
		Noise noise = new Noise(this, this.sampleRate, Noise.WHITE_NOISE);
		Volume vol4 = new Volume(noise, (float)0.02);
		// all together now
		AudioObject[] parts = {vol, vol2, vol3, vol4};
		Add add = new Add(parts);
		Envelope env = new Envelope(add, pointArray);
		StereoPan span = new StereoPan(env);
		SampleOut sout = new SampleOut(span);
	}	
}