On 01/09/2018 08:33 AM, Takashi Iwai wrote: [...] > However, the problem is that OSS emulation sets avail_min=1: implying > that, when there is any samples empty in the ring buffer, it can > continue. In the case above, when some samples have been processed > before wait_for_avail(), it keeps the outer loop spinning again. > > Since each iteration takes ca 2ms on my VM, 8000Hz rate gives 1 or 2 > samples free at each iteration. Thus at each time snd_pcm_lib_xfer() > is invoked, it processes 1 or 2 samples, then returns due to pending > signals, and the outer loop continues until the whole given samples > are consumed. If the machine is faster or the sample rate is lower, > the outer loop may exit, OTOH. OK, that makes sense. I didn't think about that case. In my mind I was working with avail_min=period_size. Thanks for clearing this up. - Lars _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
