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    1   /*
    2    * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   package com.sun.media.sound;
   26   
   27   import java.util.Comparator;
   28   import javax.sound.midi.Instrument;
   29   import javax.sound.midi.Patch;
   30   
   31   /**
   32    * Instrument comparator class.
   33    * Used to order instrument by program, bank, percussion.
   34    *
   35    * @author Karl Helgason
   36    */
   37   public class ModelInstrumentComparator implements Comparator<Instrument> {
   38   
   39       public int compare(Instrument arg0, Instrument arg1) {
   40           Patch p0 = arg0.getPatch();
   41           Patch p1 = arg1.getPatch();
   42           int a = p0.getBank() * 128 + p0.getProgram();
   43           int b = p1.getBank() * 128 + p1.getProgram();
   44           if (p0 instanceof ModelPatch) {
   45               a += ((ModelPatch)p0).isPercussion() ? 2097152 : 0;
   46           }
   47           if (p1 instanceof ModelPatch) {
   48               b += ((ModelPatch)p1).isPercussion() ? 2097152 : 0;
   49           }
   50           return a - b;
   51       }
   52   }

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