On Tue, 27 Nov 2001, Paul Davis wrote:
> enclosed below what happens when using ALSA, mmap mode and poll(2) on my
> trident card at 44100. the value of contiguous is the value returned
> by snd_pcm_mmap_begin() having been passed a value of 2048 as the
> "upper limit". the period size is 2048 frames, the buffer size is 2 *
> period size. the figures shown are for the capture stream; both
> capture and playback are open at the same time and are both in active use.
>
> needless to say, this is basically unworkable as is. any suggestions
> as to why this happening? it happens much, much less frequently at
> 48kHz, and almost never on the Hammerfall. i tried it on the
> (admittedly known to be broken) tropez+ and it crashed my machine :)
>
> is this an application design problem, or an alsa low level driver
> implementation problem (i.e. with the hw pointer routines?)
Can you send me output from 'snd_pcm_dump()', too? It might be caused by
a wrong sw_params settings.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
SuSE Linux http://www.suse.com
ALSA Project http://www.alsa-project.org
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