[MPlayer-dev-eng] [PATCH] vop eq2 with gamma correction

[Milan Cutka]

> for (j = 0; j < h; j++) {
>    for (i = 0; i < w; i++) {
>      *(dst++) = lut[*(src++)];
>    }
> }

You could try this:

for (j = 0; j < h; j++) {
   for (i = 0; i < w; i+=4,src+=4,dst+=4) {
     *(unsigned int*)dst=(lut[src[3]]<<24)|(lut[src[2]]<<16)|(lut[src[1]]<<8)|lut[src[0]];
   }
}

It works faster for me in ffdshow. Of course the best would be to add
some MMX optimizations, but I don't know how it would be possible to use MMX here.
For faster but not precise MMX optimized gamma correction look here:
http://www.stereopsis.com/polygamma.html.

   Milan