Copy the attached java program and sound clip into the same directory and compile and run the program. It should play a short sound clip. Unfortunately, nothing is played. Substituting a longer clip for the current one causes the program to play that clip fine.

The problem is that for short sound clips, EOM is generated too early, thus causing a LineEvent.Type.STOP event before the sound is even played. This code, which tries to close the Clip when it receives a STOP, thus closes the clip too early. Commenting out line 43, the close() call, fixes the problem but causes other problems in our code since it leaves the Clip open.

This occurs on Windows but not on Solaris.

Name: jl125535			Date: 08/15/2002


The problem also occurs in Linux.

FULL PRODUCT VERSION :
java version "1.4.1-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-beta-b14)


FULL OPERATING SYSTEM VERSION :
Linux  2.4.9-13 #1 Tue Oct 30 20:11:04 EST 2001 i686 unknown
glibc-2.2.4-19.3


EXTRA RELEVANT SYSTEM CONFIGURATION :
sblive no AlSA

A DESCRIPTION OF THE PROBLEM :
The LineEvent.Type.STOP seems to arrive a few tenths of a second too soon.  There is still sound remaining to be played when it arrives.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.Setup a LineListener on a clip
2.Play the clip
3.Use the LineEvent.Type.STOP event to trigger closing of the clip

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected results:

The clip to play until completion and then closed


Actual Results:

The clip stops playing before the end.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.sound.sampled.*;

public class EarlyStopDemo {
    private Clip clip;
    
    public void go() throws Exception {
        AudioInputStream audioInputStream =
            AudioSystem.getAudioInputStream(
                new java.io.File("testLong.wav"));
        DataLine.Info info =
                new DataLine.Info(Clip.class, audioInputStream.getFormat());
        clip = (Clip) AudioSystem.getLine(info);
        clip.addLineListener(new LineListener() {
                public void update(LineEvent e) {
                    if (e.getType() == LineEvent.Type.STOP) {
                        synchronized(clip) {
                            clip.notify();
                        }
                    }
                }
            });
        clip.open(audioInputStream);
        clip.start();
        synchronized (clip) {
            clip.wait();
        }
        clip.close();
    }

    public static void main(String[] args) throws Exception {
        EarlyStopDemo acd = new EarlyStopDemo();
        for (int i = 0; i < 10 ; i++ ) {
            acd.go();
        }
    }
}


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

CUSTOMER WORKAROUND :
Put a delay between when the STOP event is received and when
the clip is closed.
(Review ID: 160282)
======================================================================

###@###.### 2003-08-18
Both of these tests return the following error on Solaris 8 JDK 1.5.0-beta-b10

No line matching interface Clip supporting format PCM_SIGNED, 16000.0 Hz, 16 bit, mono, little-endian, audio data is supported. 

Could not reproduce behavior as a result.