2013/12/1 Lars-Peter Clausen <lars at metafoo.de> > PCM Devices which have the BATCH flag set update the PCM pointer only with > period size granularity. Using timer based scheduling does not have any > advantage in this mode. For one devices which have that flag set usually > update > the position pointer in software after getting the period interrupt. So > disabling the period interrupt is not possible for this kind of devices. > Furthermore writing to or reading from the buffer slice for the current > period > is not possible since the position inside the buffer is not known. On the > other > hand the tsched algorithm seems to get easily confused for this kind of > hardware, which results in garbled audio output. This typically means that > timer > based scheduling needs to be manually disabled on systems with such > devices. > Auto disabling tsched in this case allows these systems to run with the > default > configuration. > > If the playback position is reported in steps instead of monotonic increasing ? does this mean that you also need to increase rewind_safeguard to one period or modifiy snd_pcm_rewindable ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20131202/f380512c/attachment.html>
