1 /*
2 * Copyright (c) 2003, 2016, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import javax.sound.sampled.AudioSystem;
25 import javax.sound.sampled.DataLine;
26 import javax.sound.sampled.Line;
27 import javax.sound.sampled.Mixer;
28 import javax.sound.sampled.SourceDataLine;
29 import javax.sound.sampled.TargetDataLine;
30
31 /**
32 * @test
33 * @bug 4794104
34 * @summary mixers are always present, independent of available soundcards
35 * @run main/manual PhantomMixers
36 */
37 public class PhantomMixers {
38
39 public static void main(String args[]) throws Exception {
40 int SDLformats = 0;
41 int TDLformats = 0;
42 Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
43 for(int i=0; i<mixerInfo.length; i++){
44 Mixer.Info thisMixerInfo = mixerInfo[i];
45 System.out.println("Mixer #"+i+": "
46 + thisMixerInfo.getName()
47 + ": " + thisMixerInfo.getDescription());
48 Mixer mixer = AudioSystem.getMixer(thisMixerInfo);
49 Line.Info[] srcLineInfo = mixer.getSourceLineInfo();
50 Line.Info[] dstLineInfo = mixer.getTargetLineInfo();
51 int count = srcLineInfo.length + dstLineInfo.length;
52 System.out.print(" -> " + (srcLineInfo.length + dstLineInfo.length) + " line");
53 switch (count) {
54 case 0: System.out.println("s"); break;
55 case 1: System.out.println(""); break;
56 default: System.out.println("s:"); break;
57 }
58 int l;
59 for (l = 0; l < srcLineInfo.length; l++) {
60 System.out.println(" "+srcLineInfo[l].toString());
61 if (srcLineInfo[l].getLineClass() == SourceDataLine.class
62 && (srcLineInfo[l] instanceof DataLine.Info)) {
63 SDLformats += ((DataLine.Info) srcLineInfo[l]).getFormats().length;
64 }
65 }
66 for (l = 0; l < dstLineInfo.length; l++) {
67 System.out.println(" "+dstLineInfo[l].toString());
68 if (dstLineInfo[l].getLineClass() == TargetDataLine.class
69 && (dstLineInfo[l] instanceof DataLine.Info)) {
70 TDLformats += ((DataLine.Info) dstLineInfo[l]).getFormats().length;
71 }
72 }
73 }
74 if (mixerInfo.length == 0) {
75 System.out.println("[no mixers present]");
76 }
77 System.out.println(""+SDLformats+" total formats for SourceDataLines");
78 System.out.println(""+TDLformats+" total formats for TargetDataLines");
79 System.out.println("");
80 System.out.println("If there are audio devices correctly installed on your");
81 System.out.println("system, you should see at least one Mixer, and in total");
82 System.out.println("at least each one SourceDataLine and TargetDataLine, both");
83 System.out.println("providing at least one format.");
84 System.out.println("");
85 System.out.println("Now disable your soundcard and repeat the test.");
86 System.out.println("The corresponding mixer(s) should not provide any formats");
87 System.out.println("anymore. If you disable all available soundcards");
88 System.out.println("on your computer, the number of formats above should be");
89 System.out.println("0 for both line types (although mixers are allowed to exist).");
90 }
91 }