1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   5  * This code is free software; you can redistribute it and/or modify it
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   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  * A <code>Soundbank</code> contains a set of <code>Instruments</code>
  33  * that can be loaded into a <code>Synthesizer</code>.
  34  * Note that a Java Sound <code>Soundbank</code> is different from a MIDI bank.
  35  * MIDI permits up to 16383 banks, each containing up to 128 instruments
  36  * (also sometimes called programs, patches, or timbres).
  37  * However, a <code>Soundbank</code> can contain 16383 times 128 instruments,
  38  * because the instruments within a <code>Soundbank</code> are indexed by both
  39  * a MIDI program number and a MIDI bank number (via a <code>Patch</code>
  40  * object). Thus, a <code>Soundbank</code> can be thought of as a collection
  41  * of MIDI banks.
  42  * <p>
  43  * <code>Soundbank</code> includes methods that return <code>String</code>
  44  * objects containing the sound bank's name, manufacturer, version number, and
  45  * description.  The precise content and format of these strings is left
  46  * to the implementor.
  47  * <p>
  48  * Different synthesizers use a variety of synthesis techniques.  A common
  49  * one is wavetable synthesis, in which a segment of recorded sound is
  50  * played back, often with looping and pitch change.  The Downloadable Sound
  51  * (DLS) format uses segments of recorded sound, as does the Headspace Engine.
  52  * <code>Soundbanks</code> and <code>Instruments</code> that are based on
  53  * wavetable synthesis (or other uses of stored sound recordings) should
  54  * typically implement the <code>getResources()</code>
  55  * method to provide access to these recorded segments.  This is optional,
  56  * however; the method can return an zero-length array if the synthesis technique
  57  * doesn't use sampled sound (FM synthesis and physical modeling are examples
  58  * of such techniques), or if it does but the implementor chooses not to make the
  59  * samples accessible.
  60  *
  61  * @see Synthesizer#getDefaultSoundbank
  62  * @see Synthesizer#isSoundbankSupported
  63  * @see Synthesizer#loadInstruments(Soundbank, Patch[])
  64  * @see Patch
  65  * @see Instrument
  66  * @see SoundbankResource
  67  *
  68  * @author David Rivas
  69  * @author Kara Kytle
  70  */
  71 
  72 public interface Soundbank {
  73 
  74 
  75     /**
  76      * Obtains the name of the sound bank.
  77      * @return a <code>String</code> naming the sound bank
  78      */
  79     public String getName();
  80 
  81     /**
  82      * Obtains the version string for the sound bank.
  83      * @return a <code>String</code> that indicates the sound bank's version
  84      */
  85     public String getVersion();
  86 
  87     /**
  88      * Obtains a <code>string</code> naming the company that provides the
  89      * sound bank
  90      * @return the vendor string
  91      */
  92     public String getVendor();
  93 
  94     /**
  95      * Obtains a textual description of the sound bank, suitable for display.
  96      * @return a <code>String</code> that describes the sound bank
  97      */
  98     public String getDescription();
  99 
 100 
 101     /**
 102      * Extracts a list of non-Instrument resources contained in the sound bank.
 103      * @return an array of resources, excluding instruments.  If the sound bank contains
 104      * no resources (other than instruments), returns an array of length 0.
 105      */
 106     public SoundbankResource[] getResources();
 107 
 108 
 109     /**
 110      * Obtains a list of instruments contained in this sound bank.
 111      * @return an array of the <code>Instruments</code> in this
 112      * <code>SoundBank</code>
 113      * If the sound bank contains no instruments, returns an array of length 0.
 114      *
 115      * @see Synthesizer#getLoadedInstruments
 116      * @see #getInstrument(Patch)
 117      */
 118     public Instrument[] getInstruments();
 119 
 120     /**
 121      * Obtains an <code>Instrument</code> from the given <code>Patch</code>.
 122      * @param patch a <code>Patch</code> object specifying the bank index
 123      * and program change number
 124      * @return the requested instrument, or <code>null</code> if the
 125      * sound bank doesn't contain that instrument
 126      *
 127      * @see #getInstruments
 128      * @see Synthesizer#loadInstruments(Soundbank, Patch[])
 129      */
 130     public Instrument getInstrument(Patch patch);
 131 
 132 
 133 }