Re: PSoundChannel bug in Linux

Hi,

Le dimanche 27 février 2005 à 18:10 -0800, Guilhem Tardy a écrit :
> Hi,
> 
> I am sending this here, but the GnomeMeeting guys may be interested to comment
> since this seems Linux related.
> 
> For playing a file N>1 times, I had to do:
>         do {
>           // workaround for broken "WaitForPlayCompletion"
>           chnl->PlaySound(file, FALSE);
>           while (!chnl->HasPlayCompleted());
>         }
>         while (--maxTimes);
> 
> This is because
>           chnl->PlaySound(file, TRUE);
> does not wait as it SHOULD, and thus I get only the file played once.
> 
> I couldn't see any reason for this in the source, and thus cannot rule out an
> issue in the ALSA driver itself.
> 

WaitForCompletion () is using snd_pcm_drain and it should thus wait
until the sound has completed to play.

I have tested here and it seems to work here.

But the (very light) documentation says this :
"Stop a PCM preserving pending frames."

As the sound is played in one step (as for OSS), it should thus wait
that the other frames are played before stopping.

If you have a sound sample and a sample program, I can try here.
-- 
 _      Damien Sandras
(o-     GnomeMeeting: http://www.gnomemeeting.org/
//\     FOSDEM 2005 : http://www.fosdem.org
v_/_    H.323 phone : callto:ils.seconix.com/dsandras@xxxxxxxxxxx

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