On Mon, Oct 4, 2010 at 3:45 PM, Jaroslav Kysela <perex@xxxxxxxx> wrote: > On Mon, 4 Oct 2010, Andrew Bell wrote: > >> Hi, >> >> Can somebody explain precisely the circumstances leading to an EPIPE >> as the result of a pcm_snd_writei()? > > Simply, the driver consumed all queued samples in the ring buffer. > >> What buffer has been underrun that leads to this error? Does >> providing more data to pcn_snd_writei() help alleviate the issue? > > Yes, also the ring buffer size may be increased depending on the stream > parameter setup to prevent underruns. Is there some reason not to write all the data that you want played at once other than snd_pcm_writei() may block? Can you point out some code that detects this underrun condition (I've found a bunch of candidates, but they don't obviously scream "underrun here!". Thanks again, -- Andrew Bell andrew.bell.ia@xxxxxxxxx _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
