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import jm.audio.AudioObject;
import jm.audio.Instrument;
import jm.audio.io.SampleOut;
import jm.audio.synth.*;

/**
 * A basic pulsewave waveform instrument implementation
 * which has two tones a perfect fifth apart
 *
 * @author Andrew Brown
 */

public final class PulseFifthsInst extends Instrument {
    //----------------------------------------------
    // Attributes
    //----------------------------------------------

    /**
     * The points to use in the construction of Envelopes
     */
    private EnvPoint[] pointArray = new EnvPoint[10];

    private int sampleRate;

    //----------------------------------------------
    // Constructor
    //----------------------------------------------

    /**
     * Basic default constructor to set an initial
     * sampling rate
     *
     * @param sampleRate
     */
    public PulseFifthsInst(int sampleRate) {
        this.sampleRate = sampleRate;
        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) 0.9, (float) 0.4),
                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() {
        // tonic
        Oscillator wt = new Oscillator(this, Oscillator.PULSE_WAVE,
                this.sampleRate, 2);
        wt.setPulseWidth(0.15);
        StereoPan span = new StereoPan(wt, (float) 0.2);
        // fifth
        Oscillator wt2 = new Oscillator(this, Oscillator.PULSE_WAVE,
                this.sampleRate, 2);
        wt2.setPulseWidth(0.15);
        wt2.setFrqRatio((float) (3.0 / 2.0));
        StereoPan span2 = new StereoPan(wt2, (float) 0.8);
        // add together
        AudioObject[] waves = {span, span2};
        Add add = new Add(waves);
        // continue to process
        Envelope env = new Envelope(add, pointArray);
        Volume vol = new Volume(env);
        SampleOut sout = new SampleOut(vol);
    }
}