X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fcpl.cc;h=8285f87e6fa18f829bb4614e7c0472997e8583fb;hb=a91330b464995a08bdc9c9e38547f71316a06e2b;hp=685454df4cb140f51bb9a75866652e68544d771e;hpb=9292ce1176d68f31ad1fbbe358563b79c8ec9088;p=libdcp.git diff --git a/src/cpl.cc b/src/cpl.cc index 685454df..8285f87e 100644 --- a/src/cpl.cc +++ b/src/cpl.cc @@ -1,295 +1,480 @@ /* - Copyright (C) 2012 Carl Hetherington + Copyright (C) 2012-2018 Carl Hetherington - This program is free software; you can redistribute it and/or modify + This file is part of libdcp. + + libdcp is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. - This program is distributed in the hope that it will be useful, + libdcp is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - + along with libdcp. If not, see . + + In addition, as a special exception, the copyright holders give + permission to link the code of portions of this program with the + OpenSSL library under certain conditions as described in each + individual source file, and distribute linked combinations + including the two. + + You must obey the GNU General Public License in all respects + for all of the code used other than OpenSSL. If you modify + file(s) with this exception, you may extend this exception to your + version of the file(s), but you are not obligated to do so. If you + do not wish to do so, delete this exception statement from your + version. If you delete this exception statement from all source + files in the program, then also delete it here. */ -#include #include "cpl.h" -#include "parse/cpl.h" #include "util.h" -#include "picture_asset.h" -#include "sound_asset.h" -#include "subtitle_asset.h" -#include "parse/asset_map.h" #include "reel.h" #include "metadata.h" -#include "exceptions.h" +#include "certificate_chain.h" +#include "xml.h" +#include "reel_picture_asset.h" +#include "reel_sound_asset.h" +#include "reel_subtitle_asset.h" +#include "reel_closed_caption_asset.h" +#include "reel_atmos_asset.h" +#include "local_time.h" +#include "dcp_assert.h" #include "compose.hpp" +#include "raw_convert.h" +#include +#include +#include +#include using std::string; -using std::stringstream; -using std::ofstream; -using std::ostream; using std::list; +using std::pair; +using std::make_pair; +using std::cout; +using std::set; +using std::vector; using boost::shared_ptr; -using boost::lexical_cast; -using namespace libdcp; +using boost::optional; +using boost::dynamic_pointer_cast; +using namespace dcp; + + +static string const cpl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#"; +static string const cpl_smpte_ns = "http://www.smpte-ra.org/schemas/429-7/2006/CPL"; +static string const cpl_metadata_ns = "http://www.smpte-ra.org/schemas/429-16/2014/CPL-Metadata"; + -CPL::CPL (string directory, string name, ContentKind content_kind, int length, int frames_per_second) - : _directory (directory) - , _name (name) +CPL::CPL (string annotation_text, ContentKind content_kind) + /* default _content_title_text to annotation_text */ + : _issuer ("libdcp" LIBDCP_VERSION) + , _creator ("libdcp" LIBDCP_VERSION) + , _issue_date (LocalTime().as_string()) + , _annotation_text (annotation_text) + , _content_title_text (annotation_text) , _content_kind (content_kind) - , _length (length) - , _fps (frames_per_second) { - _uuid = make_uuid (); + ContentVersion cv; + cv.label_text = cv.id + LocalTime().as_string(); + _content_versions.push_back (cv); } -/** Construct a CPL object from a XML file. - * @param directory The directory containing this CPL's DCP. - * @param file The CPL XML filename. - * @param asset_map The corresponding asset map. - * @param require_mxfs true to throw an exception if a required MXF file does not exist. - */ -CPL::CPL (string directory, string file, shared_ptr asset_map, bool require_mxfs) - : _directory (directory) +/** Construct a CPL object from a XML file */ +CPL::CPL (boost::filesystem::path file) + : Asset (file) , _content_kind (FEATURE) - , _length (0) - , _fps (0) { - /* Read the XML */ - shared_ptr cpl; - try { - cpl.reset (new parse::CPL (file)); - } catch (FileError& e) { - boost::throw_exception (FileError ("could not load CPL file", file)); - } - - /* Now cherry-pick the required bits into our own data structure */ - - _name = cpl->annotation_text; - _content_kind = cpl->content_kind; - - for (list >::iterator i = cpl->reels.begin(); i != cpl->reels.end(); ++i) { - - shared_ptr p; - - if ((*i)->asset_list->main_picture) { - p = (*i)->asset_list->main_picture; - } else { - p = (*i)->asset_list->main_stereoscopic_picture; - } - - _fps = p->edit_rate.numerator; - _length += p->duration; - - shared_ptr picture; - shared_ptr sound; - shared_ptr subtitle; - - /* Some rather twisted logic to decide if we are 3D or not; - some DCPs give a MainStereoscopicPicture to indicate 3D, others - just have a FrameRate twice the EditRate and apparently - expect you to divine the fact that they are hence 3D. - */ - - if (!(*i)->asset_list->main_stereoscopic_picture && p->edit_rate == p->frame_rate) { - - try { - picture.reset (new MonoPictureAsset ( - _directory, - asset_map->asset_from_id (p->id)->chunks.front()->path - ) - ); - - picture->set_entry_point (p->entry_point); - picture->set_duration (p->duration); - } catch (MXFFileError) { - if (require_mxfs) { - throw; - } - } - - } else { - try { - picture.reset (new StereoPictureAsset ( - _directory, - asset_map->asset_from_id (p->id)->chunks.front()->path, - _fps, - p->duration - ) - ); - - picture->set_entry_point (p->entry_point); - picture->set_duration (p->duration); - - } catch (MXFFileError) { - if (require_mxfs) { - throw; - } - } - + cxml::Document f ("CompositionPlaylist"); + f.read_file (file); + + if (f.namespace_uri() == cpl_interop_ns) { + _standard = INTEROP; + } else if (f.namespace_uri() == cpl_smpte_ns) { + _standard = SMPTE; + } else { + boost::throw_exception (XMLError ("Unrecognised CPL namespace " + f.namespace_uri())); + } + + _id = remove_urn_uuid (f.string_child ("Id")); + _annotation_text = f.optional_string_child("AnnotationText").get_value_or(""); + _issuer = f.optional_string_child("Issuer").get_value_or(""); + _creator = f.optional_string_child("Creator").get_value_or(""); + _issue_date = f.string_child ("IssueDate"); + _content_title_text = f.string_child ("ContentTitleText"); + _content_kind = content_kind_from_string (f.string_child ("ContentKind")); + shared_ptr content_version = f.optional_node_child ("ContentVersion"); + if (content_version) { + /* XXX: SMPTE should insist that Id is present */ + _content_versions.push_back ( + ContentVersion ( + content_version->optional_string_child("Id").get_value_or(""), + content_version->string_child("LabelText") + ) + ); + content_version->done (); + } else if (_standard == SMPTE) { + /* ContentVersion is required in SMPTE */ + throw XMLError ("Missing ContentVersion tag in CPL"); + } + cxml::ConstNodePtr rating_list = f.node_child ("RatingList"); + if (rating_list) { + BOOST_FOREACH (cxml::ConstNodePtr i, rating_list->node_children("Rating")) { + _ratings.push_back (Rating(i)); } - - if ((*i)->asset_list->main_sound) { - - try { - sound.reset (new SoundAsset ( - _directory, - asset_map->asset_from_id ((*i)->asset_list->main_sound->id)->chunks.front()->path - ) - ); - - sound->set_entry_point ((*i)->asset_list->main_sound->entry_point); - sound->set_duration ((*i)->asset_list->main_sound->duration); - } catch (MXFFileError) { - if (require_mxfs) { - throw; - } + } + _reels = type_grand_children (f, "ReelList", "Reel"); + + cxml::ConstNodePtr reel_list = f.node_child ("ReelList"); + if (reel_list) { + list reels = reel_list->node_children("Reel"); + if (!reels.empty()) { + cxml::ConstNodePtr asset_list = reels.front()->node_child("AssetList"); + cxml::ConstNodePtr metadata = asset_list->optional_node_child("CompositionMetadataAsset"); + if (metadata) { + read_composition_metadata_asset (metadata); } } + } - if ((*i)->asset_list->main_subtitle) { - - subtitle.reset (new SubtitleAsset ( - _directory, - asset_map->asset_from_id ((*i)->asset_list->main_subtitle->id)->chunks.front()->path - ) - ); - subtitle->set_entry_point ((*i)->asset_list->main_subtitle->entry_point); - subtitle->set_duration ((*i)->asset_list->main_subtitle->duration); - } - - _reels.push_back (shared_ptr (new Reel (picture, sound, subtitle))); - } + f.ignore_child ("Issuer"); + f.ignore_child ("Signer"); + f.ignore_child ("Signature"); + + f.done (); } +/** Add a reel to this CPL. + * @param reel Reel to add. + */ void -CPL::add_reel (shared_ptr reel) +CPL::add (boost::shared_ptr reel) { _reels.push_back (reel); } +/** Write an CompositonPlaylist XML file. + * + * @param file Filename to write. + * @param standard INTEROP or SMPTE. + * @param signer Signer to sign the CPL, or 0 to add no signature. + */ void -CPL::write_xml (XMLMetadata const & metadata) const +CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr signer) const { - boost::filesystem::path p; - p /= _directory; - stringstream s; - s << _uuid << "_cpl.xml"; - p /= s.str(); - xmlpp::Document doc; - xmlpp::Element* root = doc.create_root_node ("CompositionPlaylist", "http://www.smpte-ra.org/schemas/429-7/2006/CPL"); - root->add_child("Id")->add_child_text ("urn:uuid:" + _uuid); - root->add_child("AnnotationText")->add_child_text (_name); - root->add_child("IssueDate")->add_child_text (metadata.issue_date); - root->add_child("Creator")->add_child_text (metadata.creator); - root->add_child("ContentTitleText")->add_child_text (_name); + xmlpp::Element* root; + if (standard == INTEROP) { + root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns); + } else { + root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns); + } + + root->add_child("Id")->add_child_text ("urn:uuid:" + _id); + root->add_child("AnnotationText")->add_child_text (_annotation_text); + root->add_child("IssueDate")->add_child_text (_issue_date); + root->add_child("Issuer")->add_child_text (_issuer); + root->add_child("Creator")->add_child_text (_creator); + root->add_child("ContentTitleText")->add_child_text (_content_title_text); root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind)); - { - xmlpp::Node* cv = root->add_child ("ContentVersion"); - cv->add_child ("Id")->add_child_text ("urn:uri:" + _uuid + "_" + metadata.issue_date); - cv->add_child ("LabelText")->add_child_text (_uuid + "_" + metadata.issue_date); + DCP_ASSERT (!_content_versions.empty()); + _content_versions[0].as_xml (root); + + xmlpp::Element* rating_list = root->add_child("RatingList"); + BOOST_FOREACH (Rating i, _ratings) { + i.as_xml (rating_list->add_child("Rating")); + } + + xmlpp::Element* reel_list = root->add_child ("ReelList"); + + bool first = true; + BOOST_FOREACH (shared_ptr i, _reels) { + xmlpp::Element* asset_list = i->write_to_cpl (reel_list, standard); + if (first && standard == dcp::SMPTE) { + maybe_write_composition_metadata_asset (asset_list); + first = false; + } } - root->add_child("RatingList"); - xmlpp::Node* reel_list = root->add_child ("ReelList"); - - for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { - (*i)->write_to_cpl (reel_list); + indent (root, 0); + + if (signer) { + signer->sign (root, standard); } - doc.write_to_file_formatted (p.string (), "UTF-8"); + doc.write_to_file_formatted (file.string(), "UTF-8"); - _digest = make_digest (p.string ()); - _length = boost::filesystem::file_size (p.string ()); + set_file (file); } + void -CPL::write_to_pkl (xmlpp::Node* node) const +CPL::read_composition_metadata_asset (cxml::ConstNodePtr node) { - xmlpp::Node* asset = node->add_child ("Asset"); - asset->add_child("Id")->add_child_text ("urn:uuid:" + _uuid); - asset->add_child("Hash")->add_child_text (_digest); - asset->add_child("Size")->add_child_text (lexical_cast (_length)); - asset->add_child("Type")->add_child_text ("text/xml"); + cxml::ConstNodePtr fctt = node->node_child("FullContentTitleText"); + _full_content_title_text = fctt->content(); + _full_content_title_text_language = fctt->optional_string_attribute("language"); + + _release_territory = node->optional_string_child("ReleaseTerritory"); + + cxml::ConstNodePtr vn = node->optional_node_child("VersionNumber"); + if (vn) { + _version_number = raw_convert(vn->content()); + /* I decided to check for this number being non-negative on being set, and in the verifier, but not here */ + optional vn_status = vn->optional_string_attribute("status"); + if (vn_status) { + _status = string_to_status (*vn_status); + } + } + + _chain = node->optional_string_child("Chain"); + _distributor = node->optional_string_child("Distributor"); + _facility = node->optional_string_child("Facility"); + + cxml::ConstNodePtr acv = node->optional_node_child("AlternateContentVersionList"); + if (acv) { + BOOST_FOREACH (cxml::ConstNodePtr i, acv->node_children("ContentVersion")) { + _content_versions.push_back (ContentVersion(i)); + } + } + + cxml::ConstNodePtr lum = node->optional_node_child("Luminance"); + if (lum) { + _luminance = Luminance (lum); + } + + _main_sound_configuration = node->string_child("MainSoundConfiguration"); + + string sr = node->string_child("MainSoundSampleRate"); + vector sr_bits; + boost::split (sr_bits, sr, boost::is_any_of(" ")); + DCP_ASSERT (sr_bits.size() == 2); + _main_sound_sample_rate = raw_convert(sr_bits[0]); + + _main_picture_stored_area = dcp::Size ( + node->node_child("MainPictureStoredArea")->number_child("Width"), + node->node_child("MainPictureStoredArea")->number_child("Height") + ); + + _main_picture_active_area = dcp::Size ( + node->node_child("MainPictureActiveArea")->number_child("Width"), + node->node_child("MainPictureActiveArea")->number_child("Height") + ); + + optional sll = node->optional_string_child("MainSubtitleLanguageList"); + if (sll) { + vector sll_split; + boost::split (sll_split, *sll, boost::is_any_of(" ")); + DCP_ASSERT (!sll_split.empty()); + + /* If the first language on SubtitleLanguageList is the same as the language of the first subtitle we'll ignore it */ + size_t first = 0; + if (!_reels.empty()) { + shared_ptr sub = _reels.front()->main_subtitle(); + if (sub) { + optional lang = sub->language(); + if (lang && lang->to_string() == sll_split[0]) { + first = 1; + } + } + } + + for (size_t i = first; i < sll_split.size(); ++i) { + _additional_subtitle_languages.push_back (sll_split[i]); + } + } } -list > -CPL::assets () const + +/** Write a CompositionMetadataAsset node as a child of @param node provided + * the required metadata is stored in the object. If any required metadata + * is missing this method will do nothing. + */ +void +CPL::maybe_write_composition_metadata_asset (xmlpp::Element* node) const { - list > a; - for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { - if ((*i)->main_picture ()) { - a.push_back ((*i)->main_picture ()); + if ( + !_main_sound_configuration || + !_main_sound_sample_rate || + !_main_picture_stored_area || + !_main_picture_active_area || + _reels.empty() || + !_reels.front()->main_picture()) { + return; + } + + xmlpp::Element* meta = node->add_child("meta:CompositionMetadataAsset"); + meta->set_namespace_declaration (cpl_metadata_ns, "meta"); + + meta->add_child("Id")->add_child_text("urn:uuid:" + make_uuid()); + + shared_ptr mp = _reels.front()->main_picture(); + meta->add_child("EditRate")->add_child_text(mp->edit_rate().as_string()); + meta->add_child("IntrinsicDuration")->add_child_text(raw_convert(mp->intrinsic_duration())); + + xmlpp::Element* fctt = meta->add_child("FullContentTitleText", "meta"); + if (_full_content_title_text) { + fctt->add_child_text (*_full_content_title_text); + } + if (_full_content_title_text_language) { + fctt->set_attribute("language", *_full_content_title_text_language); + } + + if (_release_territory) { + meta->add_child("ReleaseTerritory", "meta")->add_child_text(*_release_territory); + } + + if (_version_number) { + xmlpp::Element* vn = meta->add_child("VersionNumber", "meta"); + vn->add_child_text(raw_convert(*_version_number)); + if (_status) { + vn->set_attribute("status", status_to_string(*_status)); } - if ((*i)->main_sound ()) { - a.push_back ((*i)->main_sound ()); + } + + if (_chain) { + meta->add_child("Chain", "meta")->add_child_text(*_chain); + } + + if (_distributor) { + meta->add_child("Distributor", "meta")->add_child_text(*_distributor); + } + + if (_facility) { + meta->add_child("Facility", "meta")->add_child_text(*_facility); + } + + if (_content_versions.size() > 1) { + xmlpp::Element* vc = meta->add_child("AlternateContentVersionList", "meta"); + for (size_t i = 1; i < _content_versions.size(); ++i) { + _content_versions[i].as_xml (vc); } - if ((*i)->main_subtitle ()) { - a.push_back ((*i)->main_subtitle ()); + } + + if (_luminance) { + _luminance->as_xml (meta, "meta"); + } + + meta->add_child("MainSoundConfiguration", "meta")->add_child_text(*_main_sound_configuration); + meta->add_child("MainSoundSampleRate", "meta")->add_child_text(raw_convert(*_main_sound_sample_rate) + " 1"); + + xmlpp::Element* stored = meta->add_child("MainPictureStoredArea", "meta"); + stored->add_child("Width", "meta")->add_child_text(raw_convert(_main_picture_stored_area->width)); + stored->add_child("Height", "meta")->add_child_text(raw_convert(_main_picture_stored_area->height)); + + xmlpp::Element* active = meta->add_child("MainPictureActiveArea", "meta"); + active->add_child("Width", "meta")->add_child_text(raw_convert(_main_picture_active_area->width)); + active->add_child("Height", "meta")->add_child_text(raw_convert(_main_picture_active_area->height)); + + optional first_subtitle_language; + BOOST_FOREACH (shared_ptr i, _reels) { + if (i->main_subtitle()) { + first_subtitle_language = i->main_subtitle()->language(); + if (first_subtitle_language) { + break; + } } } - return a; + if (first_subtitle_language || !_additional_subtitle_languages.empty()) { + string lang; + if (first_subtitle_language) { + lang = first_subtitle_language->to_string(); + } + BOOST_FOREACH (dcp::LanguageTag const& i, _additional_subtitle_languages) { + if (!lang.empty()) { + lang += " "; + } + lang += i.to_string(); + } + meta->add_child("MainSubtitleLanguageList")->add_child_text(lang); + } } -void -CPL::write_to_assetmap (xmlpp::Node* node) const + +list > +CPL::reel_mxfs () { - xmlpp::Node* asset = node->add_child ("Asset"); - asset->add_child("Id")->add_child_text ("urn:uuid:" + _uuid); - xmlpp::Node* chunk_list = asset->add_child ("ChunkList"); - xmlpp::Node* chunk = chunk_list->add_child ("Chunk"); - chunk->add_child("Path")->add_child_text (_uuid + "_cpl.xml"); - chunk->add_child("VolumeIndex")->add_child_text ("1"); - chunk->add_child("Offset")->add_child_text("0"); - chunk->add_child("Length")->add_child_text(lexical_cast (_length)); + list > c; + + BOOST_FOREACH (shared_ptr i, _reels) { + if (i->main_picture ()) { + c.push_back (i->main_picture()); + } + if (i->main_sound ()) { + c.push_back (i->main_sound()); + } + if (i->main_subtitle ()) { + c.push_back (i->main_subtitle()); + } + BOOST_FOREACH (shared_ptr j, i->closed_captions()) { + c.push_back (j); + } + if (i->atmos ()) { + c.push_back (i->atmos()); + } + } + + return c; } - - - -bool -CPL::equals (CPL const & other, EqualityOptions opt, boost::function note) const + +list > +CPL::reel_mxfs () const { - if (_name != other._name && !opt.cpl_names_can_differ) { - stringstream s; - s << "names differ: " << _name << " vs " << other._name << "\n"; - note (ERROR, s.str ()); - return false; + list > c; + + BOOST_FOREACH (shared_ptr i, _reels) { + if (i->main_picture ()) { + c.push_back (i->main_picture()); + } + if (i->main_sound ()) { + c.push_back (i->main_sound()); + } + if (i->main_subtitle ()) { + c.push_back (i->main_subtitle()); + } + BOOST_FOREACH (shared_ptr j, i->closed_captions()) { + c.push_back (j); + } + if (i->atmos ()) { + c.push_back (i->atmos()); + } } - if (_content_kind != other._content_kind) { - note (ERROR, "content kinds differ"); + return c; +} + +bool +CPL::equals (shared_ptr other, EqualityOptions opt, NoteHandler note) const +{ + shared_ptr other_cpl = dynamic_pointer_cast (other); + if (!other_cpl) { return false; } - if (_fps != other._fps) { - note (ERROR, String::compose ("frames per second differ (%1 vs %2)", _fps, other._fps)); + if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) { + string const s = "CPL: annotation texts differ: " + _annotation_text + " vs " + other_cpl->_annotation_text + "\n"; + note (DCP_ERROR, s); return false; } - if (_length != other._length) { - stringstream s; - s << "lengths differ (" << _length << " cf " << other._length << ")"; - note (ERROR, String::compose ("lengths differ (%1 vs %2)", _length, other._length)); + if (_content_kind != other_cpl->_content_kind) { + note (DCP_ERROR, "CPL: content kinds differ"); return false; } - if (_reels.size() != other._reels.size()) { - note (ERROR, String::compose ("reel counts differ (%1 vs %2)", _reels.size(), other._reels.size())); + if (_reels.size() != other_cpl->_reels.size()) { + note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size())); return false; } - - list >::const_iterator a = _reels.begin (); - list >::const_iterator b = other._reels.begin (); - + + list >::const_iterator a = _reels.begin (); + list >::const_iterator b = other_cpl->_reels.begin (); + while (a != _reels.end ()) { if (!(*a)->equals (*b, opt, note)) { return false; @@ -300,3 +485,108 @@ CPL::equals (CPL const & other, EqualityOptions opt, boost::function i, _reels) { + if (i->encrypted ()) { + return true; + } + } + + return false; +} + +/** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used + * to decrypt those assets. + * @param kdm KDM. + */ +void +CPL::add (DecryptedKDM const & kdm) +{ + BOOST_FOREACH (shared_ptr i, _reels) { + i->add (kdm); + } +} + +void +CPL::resolve_refs (list > assets) +{ + BOOST_FOREACH (shared_ptr i, _reels) { + i->resolve_refs (assets); + } +} + +string +CPL::pkl_type (Standard standard) const +{ + return static_pkl_type (standard); +} + +string +CPL::static_pkl_type (Standard standard) +{ + switch (standard) { + case INTEROP: + return "text/xml;asdcpKind=CPL"; + case SMPTE: + return "text/xml"; + default: + DCP_ASSERT (false); + } +} + +int64_t +CPL::duration () const +{ + int64_t d = 0; + BOOST_FOREACH (shared_ptr i, _reels) { + d += i->duration (); + } + return d; +} + + +void +CPL::set_version_number (int v) +{ + if (v < 0) { + throw BadSettingError ("CPL version number cannot be negative"); + } + + _version_number = v; +} + + +void +CPL::set_content_versions (vector v) +{ + set ids; + BOOST_FOREACH (ContentVersion i, v) { + if (!ids.insert(i.id).second) { + throw DuplicateIdError ("Duplicate ID in ContentVersion list"); + } + } + + _content_versions = v; +} + + +ContentVersion +CPL::content_version () const +{ + DCP_ASSERT (!_content_versions.empty()); + return _content_versions[0]; +} + + +void +CPL::set_additional_subtitle_languages (vector const& langs) +{ + _additional_subtitle_languages.clear (); + BOOST_FOREACH (dcp::LanguageTag const& i, langs) { + _additional_subtitle_languages.push_back (i.to_string()); + } +}