jdk/test/javax/sound/sampled/Mixers/PhantomMixers.java
author serb
Mon, 31 Oct 2016 14:50:09 +0300
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permissions -rw-r--r--
8167615: Opensource unit/regression tests for JavaSound Reviewed-by: amenkov
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/*
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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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}