COLORMAP_NEAREST  370 libavfilter/vf_paletteuse.c     e->pal_entry = COLORMAP_NEAREST(search_method, s->palette, s->map, argb_elts, s->trans_thresh);
COLORMAP_NEAREST  566 libavfilter/vf_paletteuse.c                 const int r1 = COLORMAP_NEAREST(search_method, palette, node, argb, trans_thresh);