1. /*

  2.  * @(#)Instrument.java	1.14 03/01/23

  3.  *

  4.  * Copyright 2003 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package javax.sound.midi;	

  9. 

  10. import java.net.URL;

  11. 

  12. 

  13. 

  14. /**

  15.  * An instrument is a sound-synthesis algorithm with certain parameter 

  16.  * settings, usually designed to emulate a specific real-world 

  17.  * musical instrument or to achieve a specific sort of sound effect.

  18.  * Instruments are typically stored in collections called soundbanks.

  19.  * Before the instrument can be used to play notes, it must first be loaded

  20.  * onto a synthesizer, and then it must be selected for use on

  21.  * one or more channels, via a program-change command.  MIDI notes 

  22.  * that are subsequently received on those channels will be played using 

  23.  * the sound of the selected instrument.

  24.  *

  25.  * @see Soundbank

  26.  * @see Soundbank#getInstruments

  27.  * @see Patch

  28.  * @see Synthesizer#loadInstrument(Instrument)

  29.  * @see MidiChannel#programChange(int, int)

  30.  * @version 1.14, 03/01/23

  31.  * @author Kara Kytle

  32.  */

  33. 

  34. public abstract class Instrument extends SoundbankResource {

  35. 

  36. 

  37.     /**

  38.      * Instrument patch

  39.      */

  40.     private final Patch patch;

  41. 

  42. 

  43.     /**

  44.      * Constructs a new MIDI instrument from the specified <code>Patch</code>.

  45.      * When a subsequent request is made to load the 

  46.      * instrument, the sound bank will search its contents for this instrument's <code>Patch</code>,

  47.      * and the instrument will be loaded into the synthesizer at the 

  48.      * bank and program location indicated by the <code>Patch</code> object.

  49.      * @param soundbank sound bank containing the instrument

  50.      * @param patch the patch of this instrument

  51.      * @param name the name of this instrument

  52.      * @param dataClass the class used to represent the sample's data.

  53.      *

  54.      * @see Synthesizer#loadInstrument(Instrument)

  55.      */

  56.     protected Instrument(Soundbank soundbank, Patch patch, String name, Class dataClass) {

  57. 

  58. 	super(soundbank, name, dataClass);

  59. 	this.patch = patch;

  60.     }

  61. 

  62. 

  63.     /**

  64.      * Obtains the <code>Patch</code> object that indicates the bank and program

  65.      * numbers where this instrument is to be stored in the synthesizer.

  66.      * @return this instrument's patch

  67.      */

  68.     public Patch getPatch() {

  69. 	return patch;

  70.     }	

  71. }

  72. 

  73.