1 /* 2 * Copyright (c) 1999, 2004, 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 javax.sound.midi; 27 28 import java.net.URL; 29 30 31 32 /** 33 * An instrument is a sound-synthesis algorithm with certain parameter 34 * settings, usually designed to emulate a specific real-world 35 * musical instrument or to achieve a specific sort of sound effect. 36 * Instruments are typically stored in collections called soundbanks. 37 * Before the instrument can be used to play notes, it must first be loaded 38 * onto a synthesizer, and then it must be selected for use on 39 * one or more channels, via a program-change command. MIDI notes 40 * that are subsequently received on those channels will be played using 41 * the sound of the selected instrument. 42 * 43 * @see Soundbank 44 * @see Soundbank#getInstruments 45 * @see Patch 46 * @see Synthesizer#loadInstrument(Instrument) 47 * @see MidiChannel#programChange(int, int) 48 * @author Kara Kytle 49 */ 50 51 public abstract class Instrument extends SoundbankResource { 52 53 54 /** 55 * Instrument patch 56 */ 57 private final Patch patch; 58 59 60 /** 61 * Constructs a new MIDI instrument from the specified <code>Patch</code>. 62 * When a subsequent request is made to load the 63 * instrument, the sound bank will search its contents for this instrument's <code>Patch</code>, 64 * and the instrument will be loaded into the synthesizer at the 65 * bank and program location indicated by the <code>Patch</code> object. 66 * @param soundbank sound bank containing the instrument 67 * @param patch the patch of this instrument 68 * @param name the name of this instrument 69 * @param dataClass the class used to represent the sample's data. 70 * 71 * @see Synthesizer#loadInstrument(Instrument) 72 */ 73 protected Instrument(Soundbank soundbank, Patch patch, String name, Class<?> dataClass) { 74 75 super(soundbank, name, dataClass); 76 this.patch = patch; 77 } 78 79 80 /** 81 * Obtains the <code>Patch</code> object that indicates the bank and program 82 * numbers where this instrument is to be stored in the synthesizer. 83 * @return this instrument's patch 84 */ 85 public Patch getPatch() { 86 return patch; 87 } 88 }