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

/**
 * A basic sabersaw (exponential sawtooth) waveform 
 * instrument implementation
 * which implements envelope , pan, and volume control
 * @author Andrew Brown
 */

public final class SabersawInstRT extends Instrument{
	//----------------------------------------------
	// Attributes
	//----------------------------------------------
	
	/** The points to use in the construction of Envelopes */
	private EnvPoint[] pointArray = new EnvPoint[10];
	private int sampleRate, channels;

	//----------------------------------------------
	// Constructor
	//----------------------------------------------
	/**
	 * Basic default constructor
	 * @param sampleRate 
         */
         public SabersawInstRT() {
            this(44100);
        }
         
         /**
	 * Basic default constructor
	 * @param sampleRate 
         */
         public SabersawInstRT(int sampleRate){
            this(sampleRate, 2);
        }
        
        /**
	 * Basic default constructor
	 * @param sampleRate 
	 * @param channels
	 */
	public SabersawInstRT(int sampleRate, int channels){
		this.sampleRate = sampleRate;
                this.channels = channels;
		EnvPoint[] tempArray = {
			new EnvPoint((float)0.0, (float)0.0),
			new EnvPoint((float)0.02, (float)1.0),
			new EnvPoint((float)0.15, (float)0.6),
			new EnvPoint((float)0.95, (float)0.3),
			new EnvPoint((float)1.0, (float)0.0)
		};
		pointArray = tempArray;
	}

	//----------------------------------------------
	// Methods 
	//----------------------------------------------
	   
	/**
	 * Initialisation method used to build the objects that
	 * this instrument will use
	 */
	public void createChain(){
		Oscillator wt = new Oscillator(this, Oscillator.SABERSAW_WAVE, 
                    this.sampleRate, channels);
		Envelope env = new Envelope(wt, pointArray);
		Volume vol = new Volume(env);
		StereoPan span = new StereoPan(vol);
	}	
}