1 /*

     2  * Copyright (c) 2001, 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 java.io.ByteArrayInputStream;

    25 

    26 import javax.sound.sampled.AudioFormat;

    27 import javax.sound.sampled.AudioInputStream;

    28 import javax.sound.sampled.AudioSystem;

    29 import javax.sound.sampled.Clip;

    30 import javax.sound.sampled.DataLine;

    31 import javax.sound.sampled.FloatControl;

    32 import javax.sound.sampled.LineUnavailableException;

    33 import javax.sound.sampled.Mixer;

    34 

    35 /**

    36  * @test

    37  * @bug 4385654

    38  * @summary Check that the MASTER_GAIN control has a valid precision

    39  */

    40 //public class test047 extends TRTest

    41 public class FloatControlBug {

    42 

    43     private Clip theClip;

    44 

    45     boolean testPassed = true;

    46 

    47     private AudioFormat.Encoding theEncoding = AudioFormat.Encoding.PCM_SIGNED;

    48 

    49     private float theSampleRate = 44100;

    50 

    51     private int theSampleSize = 16;

    52 

    53     private int theNumberOfChannels = 1;

    54 

    55     private int theFrameSize = 2;

    56 

    57     private float theFrameRate = 44100;

    58 

    59     private boolean isBigEndian = false;

    60 

    61     //_______________________________________________

    62     //      Method: runTest

    63     //_______________________________________________

    64     public boolean runTest() {

    65         AudioInputStream theAudioInputStream = new AudioInputStream(

    66                 new ByteArrayInputStream(new byte[0]),

    67                 new AudioFormat(44100.0f, 16, 2, true, false), 441000);

    68 

    69         AudioFormat theAudioFormat = theAudioInputStream.getFormat();

    70 

    71         DataLine.Info info = new DataLine.Info(Clip.class, theAudioFormat,

    72                                                AudioSystem.NOT_SPECIFIED);

    73         try {

    74             theClip = (Clip) AudioSystem.getLine(info);

    75             theClip.open(theAudioInputStream);

    76             FloatControl theFloatControl = (FloatControl) (theClip.getControl(

    77                     FloatControl.Type.MASTER_GAIN));

    78             float theFloatControlPrecision = theFloatControl.getPrecision();

    79             System.out.println(

    80                     "theFloatControlPrecision: " + theFloatControlPrecision);

    81             System.out.println("Minimum: " + theFloatControl.getMinimum());

    82             System.out.println("Maximum: " + theFloatControl.getMaximum());

    83             System.out.println("Value  : " + theFloatControl.getValue());

    84             testPassed = theFloatControlPrecision > 0;

    85         } catch (LineUnavailableException e) {

    86             e.printStackTrace();

    87             testPassed = true;

    88         } catch (Exception e) {

    89             e.printStackTrace();

    90             testPassed = false;

    91         }

    92         return testPassed;

    93     }

    94 

    95     //_______________________________________________

    96     //      Method: main

    97     //_______________________________________________

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

    99         //test047 thisTest = new test047();

   100         if (isSoundcardInstalled()) {

   101             FloatControlBug thisTest = new FloatControlBug();

   102             boolean testResult = thisTest.runTest();

   103             if (testResult) {

   104                 System.out.println("Test passed");

   105             } else {

   106                 System.out.println("Test failed");

   107                 throw new Exception("Test failed");

   108             }

   109         }

   110     }

   111 

   112     /**

   113      * Returns true if at least one soundcard is correctly installed

   114      * on the system.

   115      */

   116     public static boolean isSoundcardInstalled() {

   117         boolean result = false;

   118         try {

   119             Mixer.Info[] mixers = AudioSystem.getMixerInfo();

   120             if (mixers.length > 0) {

   121                 result = AudioSystem.getSourceDataLine(null) != null;

   122             }

   123         } catch (Exception e) {

   124             System.err.println("Exception occured: " + e);

   125         }

   126         if (!result) {

   127             System.err.println(

   128                     "Soundcard does not exist or sound drivers not installed!");

   129             System.err.println(

   130                     "This test requires sound drivers for execution.");

   131         }

   132         return result;

   133     }

   134 }