On Tue, 07 Aug 2018 15:12:08 +0200, Chakravarthi Pradeep wrote: > > Dear Takashi, > > Thanks for your reply. > > > The "period" in ALSA PCM definition represents the interval time (or > > frames) of the periodical interrupts on the ring buffer. If the irq > > is issued for each 256 frames while the ring buffer size is 1024 > > frames, periods = 1024/256 = 4. The periods_min defines the minimal > > number of periods the hardware may accept. > > Is it 256 frames or 256 bytes ? In the case above it's in frames. But it can be defined in bytes depending on the hardware spec. Some hardware defines in the time unit (like msec), too. > fuser -v /dev/snd/* output is > USER > PID ACCESS COMMAND > /dev/snd/controlC0 Dell 1815 > F..... pulseaudio Now you know it. And remember that PA is often die-hard. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
