[MPlayer-dev-eng] [patch] libpostproc fix for negative strides

[Jindrich Makovicka]

Michael Niedermayer wrote:
> many of the filters (like the deblock and deinterlace filters) are in if() 
> else if() blocks so u cannot use them at once
> 
> please also ensure that the video used for testing has b frames and non 
> constant qp, use '-debug 16' to view the per mb qp values

Tested. There was still one bug in quantizer handling, which should be 
fixed now. I used the attached script for checking the MD5s. Maybe also 
flip->pp->flip is worth checking, but current vf_flip doesn't flip 
quantizers, and even if i hack it to do it will make sense only for 
height%16=0. Such "nice" dimensions aren't very critical for negative 
strides, as most of the fixes are effective only for partial macroblocks 
at the bottom.

-- 
Jindrich Makovicka
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