On Sun, 30 Sep 2018 21:11:49 +0200, Takashi Sakamoto wrote: > > In blocking mode of IEC 61883-1/6, when one isochronous packet includes > data for events, the data is for the same number of events as > SYT_INTERVAL decided according to sampling transmission frequency (SFC). > > IEC 61883-1/6 engine of ALSA firewire stack applies constraints of > period and buffer size of PCM intermediate buffer of PCM substream. > At present, this constraint is designed to round the size up/down to > 32 frames. This value comes from the least common multiple (LCM) of > SYT_INTERVAL. Although this looks to work well, in lower sampling > rate, applications are not allowed to set size of period quite near > period time constraint (at present 5 msec per period). > > This commit adds PCM rules for period/buffer size and rate to obsoletes > the constraints based on LCM. > > Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx> Applied, thanks. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
