137 lines
4.7 KiB
Java
137 lines
4.7 KiB
Java
/*
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* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.media.sound;
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import javax.sound.midi.Instrument;
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import javax.sound.midi.MidiChannel;
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import javax.sound.midi.Patch;
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import javax.sound.midi.Soundbank;
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import javax.sound.sampled.AudioFormat;
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/**
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* The model instrument class.
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*
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* <p>The main methods to override are:<br>
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* getPerformer, getDirector, getChannelMixer.
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*
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* <p>Performers are used to define what voices which will
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* playback when using the instrument.<br>
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*
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* ChannelMixer is used to add channel-wide processing
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* on voices output or to define non-voice oriented instruments.<br>
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*
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* Director is used to change how the synthesizer
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* chooses what performers to play on midi events.
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*
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* @author Karl Helgason
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*/
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public abstract class ModelInstrument extends Instrument {
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protected ModelInstrument(Soundbank soundbank, Patch patch, String name,
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Class<?> dataClass) {
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super(soundbank, patch, name, dataClass);
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}
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public ModelDirector getDirector(ModelPerformer[] performers,
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MidiChannel channel, ModelDirectedPlayer player) {
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return new ModelStandardIndexedDirector(performers, player);
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}
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public ModelPerformer[] getPerformers() {
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return new ModelPerformer[0];
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}
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public ModelChannelMixer getChannelMixer(MidiChannel channel,
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AudioFormat format) {
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return null;
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}
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// Get General MIDI 2 Alias patch for this instrument.
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public final Patch getPatchAlias() {
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Patch patch = getPatch();
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int program = patch.getProgram();
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int bank = patch.getBank();
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if (bank != 0)
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return patch;
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boolean percussion = false;
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if (getPatch() instanceof ModelPatch)
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percussion = ((ModelPatch)getPatch()).isPercussion();
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if (percussion)
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return new Patch(0x78 << 7, program);
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else
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return new Patch(0x79 << 7, program);
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}
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// Return name of all the keys.
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// This information is generated from ModelPerformer.getName()
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// returned from getPerformers().
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public final String[] getKeys() {
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String[] keys = new String[128];
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for (ModelPerformer performer : getPerformers()) {
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for (int k = performer.getKeyFrom(); k <= performer.getKeyTo(); k++) {
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if (k >= 0 && k < 128 && keys[k] == null) {
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String name = performer.getName();
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if (name == null)
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name = "untitled";
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keys[k] = name;
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}
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}
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}
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return keys;
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}
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// Return what channels this instrument will probably response
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// on General MIDI synthesizer.
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public final boolean[] getChannels() {
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boolean percussion = false;
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if (getPatch() instanceof ModelPatch)
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percussion = ((ModelPatch)getPatch()).isPercussion();
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// Check if instrument is percussion.
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if (percussion) {
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boolean[] ch = new boolean[16];
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for (int i = 0; i < ch.length; i++)
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ch[i] = false;
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ch[9] = true;
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return ch;
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}
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// Check if instrument uses General MIDI 2 default banks.
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int bank = getPatch().getBank();
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if (bank >> 7 == 0x78 || bank >> 7 == 0x79) {
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boolean[] ch = new boolean[16];
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for (int i = 0; i < ch.length; i++)
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ch[i] = true;
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return ch;
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}
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boolean[] ch = new boolean[16];
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for (int i = 0; i < ch.length; i++)
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ch[i] = true;
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ch[9] = false;
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return ch;
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}
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}
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