Hi Florian, On Thursday 31 January 2013 13:06:53 Florian Neuhaus wrote: > Hi Laurent, > > Thank you for your help, see my notes below: > > Laurent Pinchart wrote on 2013-01-30: > >> Will result in the following and the following (screen flickers and goes > >> black again): > >> [ 5293.617095] omapdss DISPC error: FIFO UNDERFLOW on gfx, disabling the > >> overlay > >> [ 5293.678283] omapdss DISPC error: FIFO UNDERFLOW on vid2, disabling the > >> overlay > >> > >> Output of mediactl -p while streaming: > >> http://pastebin.com/d9zDfKXu > >> > >> OMAPDSS-config: > >> http://pastebin.com/JjF0CcCS > >> > >> Now my questions: > >> Is this behaviour expected? > > > > I don't think so. I'm not an expert on the OMAP DSS, but I wouldn't > > consider the above messages as normal. > > Just as a note: This does not happen, if I disable the fb0 upon start of the > streamer. > My DSS config before the streamer start: > > fb0 --- gfx --- lcd --- LCD > fb1 --- vid1 -/ > vid2 / > > Description: I am using fb0 for the framebuffer-console. The fb1 is > connected with the overlay vid1 and used as the colorkey in your streamer > application. vid2 is directly used from within the streamer app for the > ISP-output (at least I think so ;)). Everything is connected to the > lcd-manager and outputted to a physical attached LCD. > > My DSS config when streamer is running: > > fb0 gfx --- lcd --- LCD > fb1 --- vid1 -/ > vid2 / > > With this workaround the streamer will continue streaming after a > blank/unblank. > > > As buffers will stop flowing until the screen is unblanked, the live > > application will exit after a short select() timeout. This is an > > application issue. > > If the AF/AEWB unit is enabled, the timeout doesn't happen as the > H3A-unit delivers still OMAP3_ISP_EVENT_EXCEPTION events.
Ah right. My live application should still be fixed not to timeout when AEWB is disabled, but that's out of scope here. > > It doesn't explain the omapdss error, Tomi might be able to provide more > > information about that (but he is currently away until beginning of > > February if I'm not mistaken). > > That would be very nice! As this seems to be mostly a DSS issue I'll let Tomi handle it :-) -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
