1 /*
   2  * Copyright (c) 2007, 2013, 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 
  26 package com.sun.media.sound;
  27 
  28 import java.util.Comparator;
  29 
  30 import javax.sound.midi.Instrument;
  31 import javax.sound.midi.Patch;
  32 
  33 /**
  34  * Instrument comparator class.
  35  * Used to order instrument by program, bank, percussion.
  36  *
  37  * @author Karl Helgason
  38  */
  39 public final class ModelInstrumentComparator implements Comparator<Instrument> {
  40 
  41     @Override
  42     public int compare(Instrument arg0, Instrument arg1) {
  43         Patch p0 = arg0.getPatch();
  44         Patch p1 = arg1.getPatch();
  45         int a = p0.getBank() * 128 + p0.getProgram();
  46         int b = p1.getBank() * 128 + p1.getProgram();
  47         if (p0 instanceof ModelPatch) {
  48             a += ((ModelPatch)p0).isPercussion() ? 2097152 : 0;
  49         }
  50         if (p1 instanceof ModelPatch) {
  51             b += ((ModelPatch)p1).isPercussion() ? 2097152 : 0;
  52         }
  53         return a - b;
  54     }
  55 }