[MPlayer-dev-eng] spp deblocking GREAT optimization !!!

[Nikolaj Poroshin]

Hello,

You can get a 4-6x speedup of the SPP fiter by decomposing vert and
horiz 1d dct/idct and decimating horizontal ones. This way, number of
horiz passes will be 4 times for 4 & 5 levels, or 8 times for 6 level
(which is rather useless, as noted in the original paper) lower.
Vert passes are more suitable for optimization :)

Next, you can use implied non-flat treshold with AAN dct w/o scale.
(BTW, it is an interesing question - which treshold matrix provides
best psnr?)

PS: if you CC me, I'll reply faster.
-- 
Regards,
 Nikolaj                          mailto:nialpof at pisem.net