92 lines
4.3 KiB
Java
92 lines
4.3 KiB
Java
/*
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* Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import javax.sound.sampled.AudioSystem;
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import javax.sound.sampled.DataLine;
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import javax.sound.sampled.Line;
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import javax.sound.sampled.Mixer;
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import javax.sound.sampled.SourceDataLine;
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import javax.sound.sampled.TargetDataLine;
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/**
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* @test
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* @bug 4794104
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* @summary mixers are always present, independent of available soundcards
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* @run main/manual PhantomMixers
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*/
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public class PhantomMixers {
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public static void main(String args[]) throws Exception {
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int SDLformats = 0;
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int TDLformats = 0;
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Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
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for(int i=0; i<mixerInfo.length; i++){
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Mixer.Info thisMixerInfo = mixerInfo[i];
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System.out.println("Mixer #"+i+": "
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+ thisMixerInfo.getName()
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+ ": " + thisMixerInfo.getDescription());
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Mixer mixer = AudioSystem.getMixer(thisMixerInfo);
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Line.Info[] srcLineInfo = mixer.getSourceLineInfo();
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Line.Info[] dstLineInfo = mixer.getTargetLineInfo();
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int count = srcLineInfo.length + dstLineInfo.length;
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System.out.print(" -> " + (srcLineInfo.length + dstLineInfo.length) + " line");
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switch (count) {
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case 0: System.out.println("s"); break;
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case 1: System.out.println(""); break;
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default: System.out.println("s:"); break;
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}
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int l;
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for (l = 0; l < srcLineInfo.length; l++) {
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System.out.println(" "+srcLineInfo[l].toString());
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if (srcLineInfo[l].getLineClass() == SourceDataLine.class
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&& (srcLineInfo[l] instanceof DataLine.Info)) {
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SDLformats += ((DataLine.Info) srcLineInfo[l]).getFormats().length;
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}
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}
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for (l = 0; l < dstLineInfo.length; l++) {
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System.out.println(" "+dstLineInfo[l].toString());
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if (dstLineInfo[l].getLineClass() == TargetDataLine.class
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&& (dstLineInfo[l] instanceof DataLine.Info)) {
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TDLformats += ((DataLine.Info) dstLineInfo[l]).getFormats().length;
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}
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}
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}
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if (mixerInfo.length == 0) {
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System.out.println("[no mixers present]");
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}
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System.out.println(""+SDLformats+" total formats for SourceDataLines");
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System.out.println(""+TDLformats+" total formats for TargetDataLines");
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System.out.println("");
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System.out.println("If there are audio devices correctly installed on your");
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System.out.println("system, you should see at least one Mixer, and in total");
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System.out.println("at least each one SourceDataLine and TargetDataLine, both");
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System.out.println("providing at least one format.");
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System.out.println("");
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System.out.println("Now disable your soundcard and repeat the test.");
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System.out.println("The corresponding mixer(s) should not provide any formats");
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System.out.println("anymore. If you disable all available soundcards");
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System.out.println("on your computer, the number of formats above should be");
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System.out.println("0 for both line types (although mixers are allowed to exist).");
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}
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}
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