/*

 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.Line;

import javax.sound.sampled.Mixer;

import javax.sound.sampled.SourceDataLine;

import javax.sound.sampled.TargetDataLine;

/**

 * @test

 * @bug 4794104

 * @summary mixers are always present, independent of available soundcards

 * @run main/manual PhantomMixers

 */

public class PhantomMixers {

    public static void main(String args[]) throws Exception {

        int SDLformats = 0;

        int TDLformats = 0;

        Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();

        for(int i=0; i<mixerInfo.length; i++){

            Mixer.Info thisMixerInfo = mixerInfo[i];

            System.out.println("Mixer #"+i+": "

                               + thisMixerInfo.getName()

                               + ": " + thisMixerInfo.getDescription());

            Mixer mixer = AudioSystem.getMixer(thisMixerInfo);

            Line.Info[] srcLineInfo = mixer.getSourceLineInfo();

            Line.Info[] dstLineInfo = mixer.getTargetLineInfo();

            int count = srcLineInfo.length + dstLineInfo.length;

            System.out.print(" -> " + (srcLineInfo.length + dstLineInfo.length) + " line");

            switch (count) {

                case 0: System.out.println("s"); break;

                case 1: System.out.println(""); break;

                default: System.out.println("s:"); break;

            }

            int l;

            for (l = 0; l < srcLineInfo.length; l++) {

                System.out.println("    "+srcLineInfo[l].toString());

                if (srcLineInfo[l].getLineClass() == SourceDataLine.class

                    && (srcLineInfo[l] instanceof DataLine.Info)) {

                    SDLformats += ((DataLine.Info) srcLineInfo[l]).getFormats().length;

                }

            }

            for (l = 0; l < dstLineInfo.length; l++) {

                System.out.println("    "+dstLineInfo[l].toString());

                if (dstLineInfo[l].getLineClass() == TargetDataLine.class

                    && (dstLineInfo[l] instanceof DataLine.Info)) {

                    TDLformats += ((DataLine.Info) dstLineInfo[l]).getFormats().length;

                }

            }

        }

        if (mixerInfo.length == 0) {

            System.out.println("[no mixers present]");

        }

        System.out.println(""+SDLformats+" total formats for SourceDataLines");

        System.out.println(""+TDLformats+" total formats for TargetDataLines");

        System.out.println("");

        System.out.println("If there are audio devices correctly installed on your");

        System.out.println("system, you should see at least one Mixer, and in total");

        System.out.println("at least each one SourceDataLine and TargetDataLine, both");

        System.out.println("providing at least one format.");

        System.out.println("");

        System.out.println("Now disable your soundcard and repeat the test.");

        System.out.println("The corresponding mixer(s) should not provide any formats");

        System.out.println("anymore. If you disable all available soundcards");

        System.out.println("on your computer, the number of formats above should be");

        System.out.println("0 for both line types (although mixers are allowed to exist).");

    }

}