Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 1.4.2, 5.0
    • Fix Version/s: None
    • Component/s: client-libs
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_98, windows_xp

      Description

      Name: rmT116609 Date: 08/10/2004


      FULL PRODUCT VERSION :
      java version "1.4.2_05"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04)
      Java HotSpot(TM) Client VM (build 1.4.2_05-b04, mixed mode)

      java version "1.5.0-beta2"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b51)
      Java HotSpot(TM) Client VM (build 1.5.0-beta2-b51, mixed mode)


      ADDITIONAL OS VERSION INFORMATION :
      Windows 98 [Version 4.10.2222]


      A DESCRIPTION OF THE PROBLEM :
      Ordinary WAV files are played very infrequently by the PlayClip.java
      program given below. Perhaps once out of 10 times, the sound
      is played.

      There's nothing wrong with the files, since I can play them with
      sound applications, such as WavePad.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Compile the code given below, and then run with a WAV file.


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The WAV file supplied on the command line should play once.
      e.g
      > java PlayClip sample.wav
      ACTUAL -
      C>java PlayClip sample.wav
      Playing...
      Waiting
      Exiting...

      There is a delay which lasts for the duration of the audio file before
      the "Exiting..." line appears, but no sound is played.

      REPRODUCIBILITY :
      This bug can be reproduced often.

      ---------- BEGIN SOURCE ----------

      // PlayClip.java

      import java.io.*;
      import javax.sound.sampled.*;


      public class PlayClip implements LineListener
      {
        private Clip clip = null;


        public PlayClip(String fnm)
        {
          loadClip(fnm);
          
          if (clip != null) {
            System.out.println("Playing...");
            clip.start(); // start playing
          }

          // wait for the sound to finish playing; guess at 10 mins!
          System.out.println("Waiting");
          try {
            Thread.sleep(600000); // 10 mins in ms
          }
          catch(InterruptedException e)
          { System.out.println("Sleep Interrupted"); }
        } // end of PlayClip()


        private void loadClip(String fnm)
        {
          try {
            // link an audio stream to the sound clip's file
            AudioInputStream stream = AudioSystem.getAudioInputStream(
                                getClass().getResource(fnm) );

            AudioFormat format = stream.getFormat();
            DataLine.Info info = new DataLine.Info(Clip.class, format);

            // make sure sound system supports data line
            if (!AudioSystem.isLineSupported(info)) {
              System.out.println("Unsupported Clip File: " + fnm);
              System.exit(0);
            }

            // get clip line resource
            clip = (Clip) AudioSystem.getLine(info);

            // listen to clip for events
            clip.addLineListener(this);

            clip.open(stream); // open the sound file as a clip
            stream.close(); // we're done with the input stream
          } // end of try block

          catch (Exception e) {
            System.out.println(e);
            System.exit(0);
          }
        } // end of loadClip()


        public void update(LineEvent lineEvent)
        // called when the clip's line detects open, close, start, stop events
        {
          // has the clip has reached its end?
          if (lineEvent.getType() == LineEvent.Type.STOP) {
            System.out.println("Exiting...");
            clip.stop();
            System.exit(0);
          }
        } // end of update()

        // --------------------------------------------------

        public static void main(String[] args)
        {
          if (args.length != 1) {
            System.out.println("Usage: java PlayClip <clip file>");
            System.exit(0);
          }
          new PlayClip(args[0]);
        } // end of main()

      } // end of PlayClip.java

      ---------- END SOURCE ----------

      A Workaround
      ------------
      The problem is to do with the _duration_ of the sound.
       
      If the WAV file is less than a second long then no
      sound is played.
       
      My hacky solution is to obtain the duration of the
      sound with:
         double duration = clip.getMicrosecondLength()/1000000.0;
       
      Then calculate a count which is used to loop the
      sound so it plays for a total of 1 second or more.
       
       loopCount = (int) (1.0 / duration);
       
       
       // clip.start(); // start playing
       clip.loop(loopCount);
      (Incident Review ID: 296054)
      ======================================================================
      ###@###.### 2004-08-12

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                amenkov Alex Menkov
                Reporter:
                rmandalasunw Ranjith Mandala (Inactive)
              • Votes:
                0 Vote for this issue
                Watchers:
                0 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: