test/javax/sound/sampled/Clip/bug5070081.java

rev 14028 : 6574989: TEST_BUG: javax/sound/sampled/Clip/bug5070081.java fails sometimes
Reviewed-by: prr

*** 1,7 ****
  /*
!  * Copyright (c) 2005, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2005, 2017, 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.
*** 19,28 ****
--- 19,30 ----
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
+ import java.util.concurrent.TimeUnit;
+ 
  import javax.sound.sampled.AudioFormat;
  import javax.sound.sampled.AudioSystem;
  import javax.sound.sampled.Clip;
  import javax.sound.sampled.DataLine;
  
*** 54,75 ****
          System.out.println("    frames: " + clip.getFrameLength());
          System.out.println("    seconds: " + nLengthMS/1000.0);
  
          clip.start();                               // start playing
          Thread.sleep(1000);                         // wait a sec
!         long time1 = System.currentTimeMillis();
          long pos1 = clip.getFramePosition();        // store the position
-         System.out.println("  Position before stop: " + pos1);
          clip.stop();                                // and then stop
          long pos2 = clip.getFramePosition();        // 2nd try
!         long time2 = System.currentTimeMillis();
          System.out.println("  Position after stop: " + pos2);
  
!         System.out.println("  d(time): " + Math.abs(time2-time1) + " ms;"
!                 + "d(clip pos): " + Math.abs(pos2 - pos1) + " ms.");
  
!         long nDerivation = Math.abs(pos2 - pos1) - Math.abs(time2-time1);
          // add 50 ms for deviation (delay for stopping and errors due timer precision)
          if (nDerivation > 50) {
              System.out.println("  ERROR(1): The deviation is too much: " + nDerivation + " ms");
              bSuccess = false;
          }
--- 56,81 ----
          System.out.println("    frames: " + clip.getFrameLength());
          System.out.println("    seconds: " + nLengthMS/1000.0);
  
          clip.start();                               // start playing
          Thread.sleep(1000);                         // wait a sec
!         long time1 = currentTimeMillis();
          long pos1 = clip.getFramePosition();        // store the position
          clip.stop();                                // and then stop
          long pos2 = clip.getFramePosition();        // 2nd try
!         long time2 = currentTimeMillis();
! 
!         System.out.println("  Position before stop: " + pos1);
          System.out.println("  Position after stop: " + pos2);
  
!         long timeDiff = Math.abs(time2 - time1);
!         // sample rate is 22050 per second, so 22.05 per ms
!         long posDiff = (long) (Math.abs(pos2 - pos1) / 22.05);
!         System.out.println("  d(time): " + timeDiff + " ms;"
!                 + "d(clip pos time): " + posDiff + " ms.");
  
!         long nDerivation = posDiff - timeDiff;
          // add 50 ms for deviation (delay for stopping and errors due timer precision)
          if (nDerivation > 50) {
              System.out.println("  ERROR(1): The deviation is too much: " + nDerivation + " ms");
              bSuccess = false;
          }
*** 102,107 ****
--- 108,117 ----
              }
          }
  
          System.out.println("Test passed sucessfully");
      }
+ 
+     private static long currentTimeMillis() {
+         return TimeUnit.NANOSECONDS.toMillis(System.nanoTime());
+     }
  }