[MPlayer-dev-eng] new pp filters?

Michael Niedermayer michaelni at gmx.at
Thu Oct 25 01:40:58 CEST 2001


On Thursday 25 October 2001 01:09, Michael Niedermayer wrote:
> ok i checked it (version 0.5.0pre7)
> first i thought its just clipping, scaling, deint code ... than i noticed
> the cos(...) stuff ... than the zoom.c ...
>
> clipping might be nice, no more time wasted with displaying black borders,
> i might try to implement some auto black border detection code, or better
> ill add it to the todo list ;)
> ill try the a*cos^2 + b*sin^2 scaling code, perhaps it looks better
> iam taking a look currently at the zoom.c /
> ftp://ftp-graphics.stanford.edu/pub/Graphics/GraphicsGems/GemsIII
filter.c from graphics gems 3 seems to be a simple general convolution filter 
...
zoom.c from transcode seems to be a optimized form of filter.c ... very 
likely too slow for us though (no asm)

if i get really bored i might try to implement some bicubic scaling ...

Michael



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