AV_DOWNMIX_TYPE_DPLII 1609 libavcodec/ac3dec.c             downmix_info->preferred_downmix_type = AV_DOWNMIX_TYPE_DPLII;
AV_DOWNMIX_TYPE_DPLII   97 libavfilter/af_ashowinfo.c     case AV_DOWNMIX_TYPE_DPLII:   av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic II"); break;