1 /*
2 * Copyright 1999-2003 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.sound.sampled.spi;
27
28 import javax.sound.sampled.Mixer;
29
30 /**
31 * A provider or factory for a particular mixer type.
32 * This mechanism allows the implementation to determine
33 * how resources are managed in creation / management of
34 * a mixer.
35 *
36 * @author Kara Kytle
37 * @since 1.3
38 */
39 public abstract class MixerProvider {
40
41
42 /**
43 * Indicates whether the mixer provider supports the mixer represented by
44 * the specified mixer info object.
45 * @param info an info object that describes the mixer for which support is queried
46 * @return <code>true</code> if the specified mixer is supported,
47 * otherwise <code>false</code>
48 */
49 public boolean isMixerSupported(Mixer.Info info) {
50
51 Mixer.Info infos[] = getMixerInfo();
52
53 for(int i=0; i<infos.length; i++){
54 if( info.equals( infos[i] ) ) {
55 return true;
56 }
57 }
58 return false;
59 }
60
61
62 /**
63 * Obtains the set of info objects representing the mixer
64 * or mixers provided by this MixerProvider.
65 * @return set of mixer info objects
66 */
67 public abstract Mixer.Info[] getMixerInfo();
68
69
70 /**
71 * Obtains an instance of the mixer represented by the info object.
72 * @param info an info object that describes the desired mixer
73 * @return mixer instance
74 * @throws IllegalArgumentException if the info object specified does not
75 * match the info object for a mixer supported by this MixerProvider.
76 */
77 public abstract Mixer getMixer(Mixer.Info info);
78 }
Save This Page