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 }