X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fcpl.cc;h=fcfa9efac37e5006b799ca6672d672d228df2197;hb=2f0e6ee9d883abbbc31aca0d1cc80e89eb9b0af2;hp=1eba666c4f92669e981ba305fc554c154c978516;hpb=34a25d89b16a33b5f619ae0eaaa03c17f93980af;p=libdcp.git diff --git a/src/cpl.cc b/src/cpl.cc index 1eba666c..fcfa9efa 100644 --- a/src/cpl.cc +++ b/src/cpl.cc @@ -1,16 +1,267 @@ +/* + Copyright (C) 2012-2014 Carl Hetherington + + This program 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, + 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. + +*/ + +#include "raw_convert.h" #include "cpl.h" +#include "util.h" +#include "mono_picture_mxf.h" +#include "stereo_picture_mxf.h" +#include "sound_mxf.h" +#include "subtitle_content.h" +#include "reel.h" +#include "metadata.h" +#include "signer.h" +#include "exceptions.h" +#include "xml.h" +#include "compose.hpp" +#include "reel_picture_asset.h" +#include "reel_sound_asset.h" +#include "reel_subtitle_asset.h" +#include "local_time.h" +#include + +using std::string; +using std::stringstream; +using std::ostream; +using std::list; +using std::pair; +using std::make_pair; +using boost::shared_ptr; +using boost::optional; +using namespace dcp; + +CPL::CPL (string annotation_text, ContentKind content_kind) + : _annotation_text (annotation_text) + /* default _content_title_text to _annotation_text */ + , _content_title_text (annotation_text) + , _content_kind (content_kind) + , _content_version_id ("urn:uuid:" + make_uuid ()) +{ + /* default _content_version_id to and _content_version_label to + a random ID and the current time. + */ + _content_version_id = "urn:uuid:" + make_uuid() + LocalTime().as_string (); + _content_version_label_text = _content_version_id; +} + +/** Construct a CPL object from a XML file */ +CPL::CPL (boost::filesystem::path file) + : Asset (file) + , _content_kind (FEATURE) +{ + cxml::Document f ("CompositionPlaylist"); + f.read_file (file); + + _id = f.string_child ("Id"); + if (_id.length() > 9) { + _id = _id.substr (9); + } + _annotation_text = f.optional_string_child ("AnnotationText").get_value_or (""); + _metadata.issuer = f.optional_string_child ("Issuer").get_value_or (""); + _metadata.creator = f.optional_string_child ("Creator").get_value_or (""); + _metadata.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) { + _content_version_id = content_version->optional_string_child ("Id").get_value_or (""); + _content_version_label_text = content_version->string_child ("LabelText"); + content_version->done (); + } + f.ignore_child ("RatingList"); + _reels = type_grand_children (f, "ReelList", "Reel"); + + 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 (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 (boost::filesystem::path file, Standard standard, shared_ptr signer) const +{ + xmlpp::Document doc; + xmlpp::Element* root; + if (standard == INTEROP) { + root = doc.create_root_node ("CompositionPlaylist", "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#"); + } else { + root = doc.create_root_node ("CompositionPlaylist", "http://www.smpte-ra.org/schemas/429-7/2006/CPL"); + } + + if (signer) { + root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig"); + } + + 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 (_metadata.issue_date); + root->add_child("Issuer")->add_child_text (_metadata.issuer); + root->add_child("Creator")->add_child_text (_metadata.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 (_content_version_id); + cv->add_child ("LabelText")->add_child_text (_content_version_label_text); + } + root->add_child("RatingList"); + + xmlpp::Element* reel_list = root->add_child ("ReelList"); + + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + (*i)->write_to_cpl (reel_list, standard); + } + + if (signer) { + signer->sign (root, standard); + } + + /* This must not be the _formatted version otherwise signature digests will be wrong */ + doc.write_to_file (file.string (), "UTF-8"); -CPL::CPL (string file) + set_file (file); +} + +list > +CPL::content () const +{ + list > c; + + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + if ((*i)->main_picture ()) { + c.push_back ((*i)->main_picture()->mxf ()); + } + if ((*i)->main_sound ()) { + c.push_back ((*i)->main_sound()->mxf ()); + } + if ((*i)->main_subtitle ()) { + c.push_back ((*i)->main_subtitle()->subtitle_content ()); + } + } + + return c; +} + +bool +CPL::equals (CPL const & other, EqualityOptions opt, boost::function note) const +{ + if (_annotation_text != other._annotation_text && !opt.cpl_annotation_texts_can_differ) { + stringstream s; + s << "annotation texts differ: " << _annotation_text << " vs " << other._annotation_text << "\n"; + note (ERROR, s.str ()); + return false; + } + + if (_content_kind != other._content_kind) { + note (ERROR, "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())); + return false; + } + + list >::const_iterator a = _reels.begin (); + list >::const_iterator b = other._reels.begin (); + + while (a != _reels.end ()) { + if (!(*a)->equals (*b, opt, note)) { + return false; + } + ++a; + ++b; + } + + return true; +} + +/** @return true if we have any encrypted content */ +bool +CPL::encrypted () const { - file_is (file); + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + if ((*i)->encrypted ()) { + return true; + } + } - _id = string_tag ("Id"); - _annotation_text = string_tag ("AnnotationText"); - _issue_date = string_tag ("IssueDate"); - _creator = string_tag ("Creator"); - _content_title_text = string_tag ("ContentTitleText"); - _content_kind = kind_tag ("ContentKind"); - _content_version = sub (new ContentVersion, "ContentVersion"); - ignore ("RatingList"); - _reel_list = sub (new ReelList, "ReelList"); + 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) +{ + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + (*i)->add (kdm); + } +} + +/** Set a private key for every MXF referenced by this CPL. This will allow the data + * to be decrypted or encrypted. + * @param key Key to use. + */ +void +CPL::set_mxf_keys (Key key) +{ + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + (*i)->set_mxf_keys (key); + } +} + +void +CPL::resolve_refs (list > objects) +{ + for (list >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) { + (*i)->resolve_refs (objects); + } +} + +string +CPL::pkl_type (Standard standard) const +{ + switch (standard) { + case INTEROP: + return "text/xml;asdcpKind=CPL"; + case SMPTE: + return "text/xml"; + default: + assert (false); + } } +