[meijerpb]

Hi,

In testing my MIDlet which opens, plays and closes a synthesized WAV sound every second, I find that I get a LineUnavailableException each time after *exactly* 33 rounds. This only happens with the MIDP 2.0 emulators, not with the Nokia 3650 (MIDP 1.0) emulator. It happens on both Windows 2000 and XP. Is there a bug in the implementation of Java sound for Windows such that closing an audio player does not properly clean up with the MIDP 2.0 emulators? I'm using Java 1.4.2, and the latest beta 0.3.1 for series 60 emulator, while I believe I properly use createPlayer, realize, prefetch, start and close everytime the sound is played.

The exception trace occurring after playing a sound 33 times is appended.
Changing the sample frequency from 11025 to 8000 Hz made no difference.

Any ideas?

Peter Meijer


javax.sound.sampled.LineUnavailableException: No Free Voices

at com.sun.media.sound.MixerClip.nSetup(Native Method)

at com.sun.media.sound.MixerClip.getValidVoiceId(MixerClip.java:593)

at com.sun.media.sound.MixerClip.implOpen(MixerClip.java:571)

at com.sun.media.sound.MixerClip.open(MixerClip.java:161)

at com.sun.media.sound.MixerClip.open(MixerClip.java:249)

at com.nokia.phone.sdk.concept.mirrors.mma.media.player.WavPlayer.doRealize(WavPlayer.java)

at com.nokia.phone.sdk.concept.mirrors.mma.media.player.BasicPlayer.realize(BasicPlayer.java)

at com.nokia.phone.sdk.concept.mirrors.mma.media.player.BasicPlayer.deallocate(BasicPlayer.java)

at com.nokia.phone.sdk.concept.mirrors.mma.media.player.BasicPlayer.close(BasicPlayer.java)

at com.nokia.phone.sdk.concept.mirrors.mma.media.MMAManager.close(MMAManager.java)

at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at com.nokia.phone.sdk.concept.gateway.e.a(e.java)

at com.nokia.phone.sdk.concept.gateway.e.run(e.java)

at java.lang.Thread.run(Thread.java:534)

[meijerpb]

OK, to make my case still stronger, I took the hassle
to play the "bark.wav" in the standard audiodemo app:
I selected the AudioPlayer demo, and then ran the
"Bark [rms]" example for a few dozen times, and guess
what: again it yielded the infamous

javax.sound.sampled.LineUnavailableException: No Free Voices


after *exactly* 33 rounds!

I used Series_60_MIDP_Concept_SDK_Beta_0_3_1_Nokia_edition
on Windows 2000 via the regular KToolbar. So something
seems wrong with the sound part of the MIDP 2.0 emulator
(for Windows 2000 and XP)?

Please fix this problem, because I have an application
under development that continuously plays sound samples,
and it crashes on the above problem within a minute or so.

Peter Meijer

http://www.seeingwithsound.com

[meijerpb]

By the way, the problem does *not* show up on the
Motorola iDEN i730 emulator for MIDP2.0 MIDlets,
on Windows 2000, after well over a hundred rounds,
so it seems to be specific for the Nokia MIDP2.0
emulators.

Peter Meijer

http://www.seeingwithsound.com