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import jm.audio.io.SampleIn;
import jm.audio.io.SampleOut;
import jm.audio.synth.Envelope;
import jm.audio.synth.ReSample;
import jm.audio.synth.StereoPan;
import jm.audio.synth.Volume;

public final class SimpleSampleInst extends jm.audio.Instrument {
    //----------------------------------------------
    // Attributes
    //----------------------------------------------
    /**
     * the name of the sample file
     */
    private String fileName;
    /**
     * How many channels is the sound file we are using
     */
    private int numOfChannels;
    /**
     * the base frequency of the sample file to be read in
     */
    private double baseFreq;
    /**
     * should we play the wholeFile or just what we need for note duration
     */
    private boolean wholeFile;
    /**
     * The points for the break point envelope
     */
    private double[] points;
    private SampleOut sout;
    //----------------------------------------------
    // Constructor
    //----------------------------------------------

    /**
     * Constructor
     */
    public SimpleSampleInst(String fileName) {
        this(fileName, 440.00);
    }

    public SimpleSampleInst(String fileName, double baseFreq) {
        this(fileName, baseFreq, false);
    }

    public SimpleSampleInst(String fileName, double baseFreq, double[] points) {
        this(fileName, baseFreq, false, points);
    }

    public SimpleSampleInst(String fileName, double baseFreq, boolean wholeFile) {
        this(fileName, baseFreq, wholeFile,
                new double[]{0.0, 0.0, 0.01, 1.0, 0.99, 1.0, 1.0, 0.0});
    }

    public SimpleSampleInst(String fileName, double baseFreq, boolean wholeFile, double[] points) {
        this.fileName = fileName;
        this.baseFreq = baseFreq;
        this.wholeFile = wholeFile;
        this.points = points;
    }

    //----------------------------------------------
    // Methods
    //----------------------------------------------

    /**
     * Create the Audio Chain for this Instrument
     * and assign the primary Audio Object(s). The
     * primary audio object(s) are the one or more
     * objects which head up the chain(s)
     */
    public void createChain() {
        //define the chain
        SampleIn sin = new SampleIn(this, fileName);

        ReSample reSample = new ReSample(sin, this.baseFreq);
        Volume vol = new Volume(reSample);
        StereoPan span = new StereoPan(vol);
        if (wholeFile) {
            sin.setWholeFile(wholeFile);
            if (output == RENDER) sout = new SampleOut(span);
        } else {
            Envelope env = new Envelope(span, points);
            if (output == RENDER) sout = new SampleOut(env);
        }
    }
}