SET_FUNC          501 libavfilter/vf_lut3d.c     case INTERPOLATE_NEAREST:     SET_FUNC(nearest);        break;
SET_FUNC          502 libavfilter/vf_lut3d.c     case INTERPOLATE_TRILINEAR:   SET_FUNC(trilinear);      break;
SET_FUNC          503 libavfilter/vf_lut3d.c     case INTERPOLATE_TETRAHEDRAL: SET_FUNC(tetrahedral);    break;