--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/media/sound/ModelInstrument.java	Mon Jan 19 20:11:58 2009 +0300
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+package com.sun.media.sound;
+
+import javax.sound.midi.Instrument;
+import javax.sound.midi.MidiChannel;
+import javax.sound.midi.Patch;
+import javax.sound.midi.Soundbank;
+import javax.sound.sampled.AudioFormat;
+
+/**
+ * The model instrument class.
+ *
+ * <p>The main methods to override are:<br>
+ * getPerformer, getDirector, getChannelMixer.
+ *
+ * <p>Performers are used to define what voices which will
+ * playback when using the instrument.<br>
+ *
+ * ChannelMixer is used to add channel-wide processing
+ * on voices output or to define non-voice oriented instruments.<br>
+ *
+ * Director is used to change how the synthesizer
+ * chooses what performers to play on midi events.
+ *
+ * @author Karl Helgason
+ */
+public abstract class ModelInstrument extends Instrument {
+
+    protected ModelInstrument(Soundbank soundbank, Patch patch, String name,
+            Class<?> dataClass) {
+        super(soundbank, patch, name, dataClass);
+    }
+
+    public ModelDirector getDirector(ModelPerformer[] performers,
+            MidiChannel channel, ModelDirectedPlayer player) {
+        return new ModelStandardDirector(performers, player);
+    }
+
+    public ModelPerformer[] getPerformers() {
+        return new ModelPerformer[0];
+    }
+
+    public ModelChannelMixer getChannelMixer(MidiChannel channel,
+            AudioFormat format) {
+        return null;
+    }
+
+    // Get General MIDI 2 Alias patch for this instrument.
+    public Patch getPatchAlias() {
+        Patch patch = getPatch();
+        int program = patch.getProgram();
+        int bank = patch.getBank();
+        if (bank != 0)
+            return patch;
+        boolean percussion = false;
+        if (getPatch() instanceof ModelPatch)
+            percussion = ((ModelPatch)getPatch()).isPercussion();
+        if (percussion)
+            return new Patch(0x78 << 7, program);
+        else
+            return new Patch(0x79 << 7, program);
+    }
+
+    // Return name of all the keys.
+    // This information is generated from ModelPerformer.getName()
+    // returned from getPerformers().
+    public String[] getKeys() {
+        String[] keys = new String[128];
+        for (ModelPerformer performer : getPerformers()) {
+            for (int k = performer.getKeyFrom(); k <= performer.getKeyTo(); k++) {
+                if (k >= 0 && k < 128 && keys[k] == null) {
+                    String name = performer.getName();
+                    if (name == null)
+                        name = "untitled";
+                    keys[k] = name;
+                }
+            }
+        }
+        return keys;
+    }
+
+    // Return what channels this instrument will probably response
+    // on General MIDI synthesizer.
+    public boolean[] getChannels() {
+        boolean percussion = false;
+        if (getPatch() instanceof ModelPatch)
+            percussion = ((ModelPatch)getPatch()).isPercussion();
+
+        // Check if instrument is percussion.
+        if (percussion) {
+            boolean[] ch = new boolean[16];
+            for (int i = 0; i < ch.length; i++)
+                ch[i] = false;
+            ch[9] = true;
+            return ch;
+        }
+
+        // Check if instrument uses General MIDI 2 default banks.
+        int bank = getPatch().getBank();
+        if (bank >> 7 == 0x78 || bank >> 7 == 0x79) {
+            boolean[] ch = new boolean[16];
+            for (int i = 0; i < ch.length; i++)
+                ch[i] = true;
+            return ch;
+        }
+
+        boolean[] ch = new boolean[16];
+        for (int i = 0; i < ch.length; i++)
+            ch[i] = true;
+        ch[9] = false;
+        return ch;
+    }
+}