+
+ if ((*_reel)->atmos()) {
+ shared_ptr<dcp::AtmosAsset> asset = (*_reel)->atmos()->asset();
+ _atmos_reader = asset->start_read();
+ _atmos_reader->set_check_hmac (false);
+ _atmos_metadata = AtmosMetadata (asset);
+ } else {
+ _atmos_reader.reset ();
+ _atmos_metadata = boost::none;
+ }