Ville Syrj�l� ([EMAIL PROTECTED]): > On Thu, Feb 13, 2003 at 10:52:29AM -0600, Billy Biggs wrote: > > Oh, and one question about this patch. Can I change whether the frame > > is top-field-first or bottom-field-first while playing, > > Yes. > > > and what does it > > mean? > > It just means that you can select which field get's displayed first after > a Flip(). This is actually done by delaying the Flip().
Perfect. > > Ideally I'd like to be able to have MPEG2's repeat_first_field > > capability, where I give a frame that's top field first, switch to > > bottom field first, then have the next flip happen after 3 fields > > are shown. Yea yea? > > I'm not sure about this since we can't tell the hardware which field > to display. So if there are two same fields to be displayd in sequence > we're scewed. We could try to swap the address registers around but > last time I tried to do that that the hardware didn't seem to like it > and the picture wasn't steady. You misunderstand. I don't want to send two top fields directly after each other, rather I want to do this: [Top Bot Top] [Bot Top] [Bot Top Bot] [Top Bot] ... Where inside the [] represents a frame. So we're still doing a sequence of top/bot/top/bot but I'm going to swap the parity of the flips. It seems like the semantics of the call you added make this nice and pretty. The above sequence represents how 2-3 pulldown is encoded on DVDs for 24fps-to-59.94fps conversion. -- Billy Biggs [EMAIL PROTECTED] -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe directfb-dev" as subject.
