On Thu, 11 Mar 2004, M?ns Rullg?rd wrote:
> I've noticed some strange things with snd_pcm_wait. My application
> opens the sound device in non-blocking mode and uses snd_pcm_wait
> whenever snd_pcm_writei return EAGAIN. This works fine as long as
> ALSA isn't doing any resampling. However, when resampling (e.g. from
> 44.1 kHz to 48 kHz) snd_pcm_wait returns immediately, insisting that
> there is room in the buffer, after which snd_pcm_writei obviously
> returns EAGAIN once more. The same thing happens if I use OSS
> emulation and select() or poll(). Replacing the snd_pcm_wait call
> with usleep(10000) makes the CPU load look normal again, while the
> application still works.
>
> I am using Linux 2.6.4, ALSA driver 1.0.3 and library 1.0.3a with a
> SIS7012 chip. It behaves the same way with kernel 2.6.3 and driver
> 1.0.2c. I'm not quite sure when it started.
>
> This application used to work properly. Has something changed so I
> need to modify my application?
Could you give me your code to analyze the problem?
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Alsa-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-devel
