Oh -- thanks a lot for the quick answer! But then I guess I'll
rephrase the question: Why would I get xruns with "plughw", but not
with "hw"?
The -EPIPE occurs deterministically after 3584 frames (7 fragments)
are processed. I don't seem to get any -EPIPE errors with "hw".
Thanks -- Ken
On Sun, 24 Mar 2002, Paul Davis wrote:
> >1) The device "pcm.hw:0" seems to work fine, but when I use
> >"pcm.plughw:0", I get "Broken pipe" from snd_pcm_writei. This happens
> >even with stop_threshold set to UINT_MAX (i.e., this shouldn't
> >be caused by underruns).
>
> no, setting the stop threshold to this value just prevents the driver
> from stopping the device when an xrun happens. it doesn't stop the
> reporting of xruns via -EPIPE.
>
> >Finally, an API question: if I set stop_threshold to UINT_MAX, can I
> >still find out after stoping the device if there have been any
> >underruns? Or do I need to monitor for this during the run?
>
> see above.
>
> --p
>
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