[XviD-devel] [CVS commit] devapi4 -- Speed optims
Edouard Gomez
ed.gomez at free.fr
Wed Nov 5 19:50:14 CET 2003
Christoph Lampert (chl at math.uni-bonn.de) wrote:
> Sound good.
> Was this with B-frames, or how did you get it below 1 call to
> setedge() per frame?
Yep, that's with bframes, we used to edge reference frames for each
bframe, now a flag keep track of that so we do it only once, similar
trick is used for interpolation so if rounding is the same as requested
for the current coded frame, it's just used as is. There is also
another optim that swaps backward and reference frame interpolations.
I forgot to precise the overall speedup is 3% when bframes are
activated. I did not measure the quarterpel speedup caused by the
other change pointed in the ChangeLog entry.
--
Edouard Gomez
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