[MPlayer-dev-eng] eq2 "gamma" correcture

[Billy Biggs]

Michael Niedermayer (michaelni at gmx.at):

> why is eq2 performing gamma correcture in YUV space??? this is wrong
> even if the gamma correcture is the same for all channels
> hint: xr^c + yg^c + zb^c != y^c = (xr + yg + zb)^c 

  Yep.  Even worse, think about if you want to do gamma correct
compositing of subtitles in YUV space. :)   You must convert first to
linear RGB.  I always got a kick out of the 'gamma' filters in mplayer
and other applications. :)

  -Billy