Michael, You note that the discussion of XV_DONT_BLIT_THE_COLORKEY is on the xpert list. Should general discussion of Xv issues be on that list? It's awfully busy. I posted on this list because I think of it as the "Video For Linux" list (video issues on Linux) rather than the "Video4Linux" list (issues specific to the Video4Linux interface). Maybe I should post to both. In the meantime I'll check out the xpert list. Peter Kaczowka Michael wrote: > On Fri, Feb 16, 2001 at 03:45:11PM -0500, Peter Kaczowka wrote: > > Michael, > > > > > There should be no need to set the background to the colour key. > > >The drivers blit the colour key into the drawable, respecting whatever > > > clipping needs to be done. > > > > By "drivers", you mean the DDX graphics drivers, not the v4l driver, right? I > > should be still be able though to use the colour key to place graphics (such as > > captions) over the video the video by: > [snip] > > Will that work? If not, then it's a shame; the i810 hardware is then not being > > used to full advantage. > > I suspect that none of it will work at present because you don't have > offscreen surface support :o) > > But for the drivers that do have it (and yes I mean the drivers that are > displaying the overlay) They currently use XAA to blit the colour key > and, as you say, that will break any clever usage of the colour key. > > If you look at the xpert list on http://www.xfree.org you'll see that > very topic discussed, and a proposed XV_DONT_BLIT_THE_COLORKEY to stop > the driver doing the blit. Note the silly XV attribute name is my > invention, I don't know what the attribute name will be. > > > Thanks for the pointer to xawtv's xvideo, which I can build :-) It fails as > > shown below; my test code doesn't fail this way, but doesn't work either :-) > > Note that "./xvideo -port 35" (specifying video port) fails the same way. > > I think it's --port with 2 -'s. If its not that simple, then I'd guess > you are going to struggle debugging this without the XF4 source in front > of you. v4l.c is worth studying to see why you probably aren't even going > to get a yuv overlay yet, and the i810 driver is the place to c&p the > offscreen surface support into ;) > > -- > Michael. > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list
