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 }