MIX               150 libavfilter/vf_tonemap.c         *r_out = MIX(*r_in, luma, overbright);
MIX               151 libavfilter/vf_tonemap.c         *g_out = MIX(*g_in, luma, overbright);
MIX               152 libavfilter/vf_tonemap.c         *b_out = MIX(*b_in, luma, overbright);