[Ffmpeg-devel] [RFC] VC3/DNxHD decoder

Michael Niedermayer michaelni
Sat Mar 17 18:05:04 CET 2007


On Sat, Mar 17, 2007 at 03:40:19PM +0100, Baptiste Coudurier wrote:
> Hi
> $subject.
> I need to include "mpegvideo.h" only for Scantable and
> ff_init_scantable, can we separate them from mpegvideo.h ? like
> scantable.h ?


> It decodes 1080p atm, but you should only need to add ac/dc/run vlc
> tables to decode other progressive modes. Interlaced mode is almost
> finished, bitstream is one complete frame but 2 sequentials fields
> bitstreams.
> Also if someone could explain me how CODEC_CAP_DR1 and draw_horiz_band
> and low_res works, I can implement them.

CODEC_CAP_DR1, well nothing special just proper use of get/release_buffer()
compared to returning random possibly static buffers ...

draw_horiz_band, is just called after each row of macroblocks is finished
(in the hope that it is still in the L2 cache for whatever is done with it

low_res, well decode in lower res what else :)

ill review the patch in a moment ...

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Everything should be made as simple as possible, but not simpler.
-- Albert Einstein
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