luma_pos_to_ctbAddrRS 2884 libde265/slice.cc   int current_ctbAddrRS  = luma_pos_to_ctbAddrRS(&img->get_sps(), xC,yC);
luma_pos_to_ctbAddrRS 2885 libde265/slice.cc   int neighbor_ctbAddrRS = luma_pos_to_ctbAddrRS(&img->get_sps(), xN,yN);