ModelInstrumentComparator.java

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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * version 2 for more details (a copy is included in the LICENSE file that
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package com.sun.gervill;

import java.util.Comparator;
import javax.sound.midi.Instrument;
import javax.sound.midi.Patch;

/**
 * Instrument comparator class.
 * Used to order instrument by program, bank, percussion.
 *
 * @author Karl Helgason
 */
public final class ModelInstrumentComparator implements Comparator<Instrument> {

    public int compare(Instrument arg0, Instrument arg1) {
        Patch p0 = arg0.getPatch();
        Patch p1 = arg1.getPatch();
        int a = p0.getBank() * 128 + p0.getProgram();
        int b = p1.getBank() * 128 + p1.getProgram();
        if (p0 instanceof ModelPatch) {
            a += ((ModelPatch)p0).isPercussion() ? 2097152 : 0;
        }
        if (p1 instanceof ModelPatch) {
            b += ((ModelPatch)p1).isPercussion() ? 2097152 : 0;
        }
        return a - b;
    }
}