AV_DOWNMIX_TYPE_LORO 1606 libavcodec/ac3dec.c             downmix_info->preferred_downmix_type = AV_DOWNMIX_TYPE_LORO;
AV_DOWNMIX_TYPE_LORO   95 libavfilter/af_ashowinfo.c     case AV_DOWNMIX_TYPE_LORO:    av_log(ctx, AV_LOG_INFO, "Lo/Ro");              break;