1 /*
   2  * Copyright (c) 2005, 2017, 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.util.concurrent.TimeUnit;
  25 
  26 import javax.sound.sampled.AudioFormat;
  27 import javax.sound.sampled.AudioSystem;
  28 import javax.sound.sampled.Clip;
  29 import javax.sound.sampled.DataLine;
  30 import javax.sound.sampled.LineUnavailableException;
  31 
  32 /*
  33  * @test
  34  * @bug 5070081
  35  * @summary Tests that javax.sound.sampled.Clip does not loses position through
  36  *          stop/start

  37  */
  38 public class bug5070081 {
  39 
  40     static AudioFormat format = new AudioFormat(22050, 8, 1, false, false);
  41     // create a 3-second file
  42     static byte[] soundData = new byte[(int) (format.getFrameRate() * format.getFrameSize() * 3)];
  43 
  44     static final int LOOP_COUNT = 5;
  45 
  46     static boolean test() throws Exception {
  47         DataLine.Info info = new DataLine.Info(Clip.class, format);
  48         Clip clip = null;


  49         boolean bSuccess = true;
  50         try {
  51             clip = (Clip) AudioSystem.getLine(info);
  52             clip.open(format, soundData, 0, soundData.length);
  53         } catch (LineUnavailableException | IllegalArgumentException ignored) {
  54             // the test is not applicable
  55             return bSuccess;
  56         }
  57 
  58         long nLengthMS = clip.getMicrosecondLength()/1000;
  59 
  60         System.out.println("  Clip length:");
  61         System.out.println("    frames: " + clip.getFrameLength());
  62         System.out.println("    seconds: " + nLengthMS/1000.0);
  63 
  64         clip.start();                               // start playing
  65         Thread.sleep(1000);                         // wait a sec
  66         long time1 = currentTimeMillis();
  67         long pos1 = clip.getFramePosition();        // store the position
  68         clip.stop();                                // and then stop
  69         long pos2 = clip.getFramePosition();        // 2nd try
  70         long time2 = currentTimeMillis();
  71 
  72         System.out.println("  Position before stop: " + pos1);
  73         System.out.println("  Position after stop: " + pos2);
  74 
  75         long timeDiff = Math.abs(time2 - time1);
  76         // sample rate is 22050 per second, so 22.05 per ms
  77         long posDiff = (long) (Math.abs(pos2 - pos1) / 22.05);
  78         System.out.println("  d(time): " + timeDiff + " ms;"
  79                 + "d(clip pos time): " + posDiff + " ms.");
  80 
  81         long nDerivation = posDiff - timeDiff;
  82         // add 50 ms for deviation (delay for stopping and errors due timer precision)
  83         if (nDerivation > 50) {
  84             System.out.println("  ERROR(1): The deviation is too much: " + nDerivation + " ms");
  85             bSuccess = false;
  86         }
  87 
  88         Thread.sleep(1000);
  89         clip.start();                               // start again
  90         Thread.sleep(100);
  91         while(clip.isRunning());                    // wait for the sound to finish
  92 
  93         int nEndPos = clip.getFramePosition();
  94         System.out.println("  Position at end: " + nEndPos);
  95         if (nEndPos > clip.getFrameLength()) {
  96             System.out.println("  ERROR(2): end position if out of range");
  97             bSuccess = false;
  98         }
  99 
 100         clip.close();
 101 
 102         return bSuccess;
 103     }
 104 
 105     public static void main(String[] args) throws Exception {
 106         for (int count=1; count <= LOOP_COUNT; count++)
 107         {
 108             System.out.println("loop " + count + "/" + LOOP_COUNT);
 109             if (!test())
 110             {
 111                 System.out.println("Test FAILED");
 112                 throw new RuntimeException("Test FAILED.");
 113             }
 114         }
 115 
 116         System.out.println("Test passed sucessfully");
 117     }
 118 
 119     private static long currentTimeMillis() {
 120         return TimeUnit.NANOSECONDS.toMillis(System.nanoTime());
 121     }
 122 }
--- EOF ---