On Mon, 10 Mar 2008, Johannes Dohmen wrote: > Hi there, > > With a sampling rate of 8000 I want to capture every 20ms a chunk (160 > frames) of data from the soundcard. That works ok, but every ~5 seconds > I get a EGAIN from snd_pcm_readi(). > I understand that this is not an error but a notification that the sound > card is not ready and should be asked again for data later on. > > Probably the easiest way to get rid of the EGAINs would be to use > blocking IO, which I would prefer, but I have timing restrictions and > snd_pcm_readi() has no sort of timeout (which I could see at least). Just use poll() - it's standard unix interface to wait for an event. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
