[FFmpeg-devel] [PATCH] Add negate filter.

[Jason Garrett-Glaser]

Just a thought here -- there's a practically infinite number of simple
filters like this (i.e. filters for which every pixel is operated on
independently).  Would it not be better to port something like
Avisynth's MT_LUT filter, which allows the user to specify a
mathematical operation to create a LUT from, which is then applied to
all pixels?  This could serve as the basis for many simple filters,
reducing code duplication.

Jason