On Fri, 6 Oct 2006, Christopher "Monty" Montgomery wrote: > As you've pointed out, there are two things to distinguish. > > We need to report schedule xruns, meaning, missed slots. -EXDEX in > the urb status was mentioned at some point, as was 'urb's start_frame > is out of sync from expected'. Are these reported immediately upon > next submission?
"start_frame out of sync" is reported immediately, upon submission. In practice it never should come up because drivers will always use URB_ISO_ASAP. -EXDEV is reported when the URB completes. > We also need to distinguish the URBs simply starving for input from > intentional shutdown. You are alleging it is the responsibility of > higher-level drivers to keep stuffing in URBs with dummy data to keep > things going if they care. The higher-level drivers are apparently > not doing so. According to Clemens, snd-usb-audio can be configured to use or to not use dummy data, by the application. If it's doing the wrong thing your application is therefore at fault. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
