[MPlayer-dev-eng] [patch] DVD NAV work continues...

[Felix Buenemann]

Am Son, 2002-03-31 um 09.16 schrieb Kees Cook:
> Here is my continuing work for DVD nav support.
> 
> A few things happen in this patch, some of which I may need to slapped on 
> the wrist for and told how to deal with better...
> 

> - I tried to do this for the active audio channel too, but there is a
>   disconnect between dvdnav and mplayer on stream numbering that I'm still 
>   working on.

probably because mplayer used real stream id starting from 128 while
libdvdnav might map it to 0, 1 etc.

> - I have the caching subsystem check the STREAMTYPE_*, and skips if
>   it sees a DVDNAV stream.
suboptimal solution, IMHO better solution: use cache, but disable it
during interactive scenes. Why? because without caching dvd playback is
very sucking jerky...

> - I fixed the stream seeking to not rewind a DVDNAV stream, since this
>   seemed to corrupt things pretty badly.  I've left the arrow keys active
>   for now, but they'll be disabled at some point (maybe).

If possible you should remap curso key for navigation during interactive
stuff, and use normal mapping the rest of time.

> - Since I'm still working on getting menu navigation visible the Right 
>   way, I hacked in some code to draw lines around the menu box.  Since
>   I don't have the brain power to understand the draw_alpha routines
>   right now, I hacked together a "line drawing" routine using font
>   characters.  :)  With that routine, I draw the menu box.  Unfortunately,
>   you have to move the menu around at least once before it appears (this
>   is due to DVDNAV events...)

eeh, why don't you look at dvdsub/vobsub code, to findout how to draw
that stuff (spudec.c etc.)

> - I added an option to skip all still-image timers since still images
>   don't work yet.  ("-skipopening")

do you have fool proof way of detecting still scenes?
If yes there are two solutions:
a) repeat still frame
b) disable a/vsync code during still scenes, so buffer won't overrun

actually Arpi should comment on this, it's his area.
> -- 
> Kees Cook                                            @outflux.net
> ----
> 
-- 
Best Regards,
	Atmos
____________________________________________
- MPlayer Developer - http://mplayerhq.hu/ -
____________________________________________