2 Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
25 #include "certificate_chain.h"
27 #include "reel_picture_asset.h"
28 #include "reel_sound_asset.h"
29 #include "reel_subtitle_asset.h"
30 #include "reel_atmos_asset.h"
31 #include "local_time.h"
32 #include "dcp_assert.h"
33 #include "compose.hpp"
34 #include <libxml/parser.h>
35 #include <libxml++/libxml++.h>
36 #include <boost/foreach.hpp>
39 using std::stringstream;
45 using boost::shared_ptr;
46 using boost::optional;
47 using boost::dynamic_pointer_cast;
50 static string const cpl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#";
51 static string const cpl_smpte_ns = "http://www.smpte-ra.org/schemas/429-7/2006/CPL";
53 CPL::CPL (string annotation_text, ContentKind content_kind)
54 : _annotation_text (annotation_text)
55 /* default _content_title_text to _annotation_text */
56 , _content_title_text (annotation_text)
57 , _content_kind (content_kind)
58 , _content_version_id ("urn:uuid:" + make_uuid ())
60 /* default _content_version_id to a random ID and _content_version_label to
61 a random ID and the current time.
63 _content_version_id = "urn:uuid:" + make_uuid();
64 _content_version_label_text = _content_version_id + LocalTime().as_string ();
67 /** Construct a CPL object from a XML file */
68 CPL::CPL (boost::filesystem::path file)
70 , _content_kind (FEATURE)
72 cxml::Document f ("CompositionPlaylist");
75 if (f.namespace_uri() == cpl_interop_ns) {
77 } else if (f.namespace_uri() == cpl_smpte_ns) {
80 boost::throw_exception (XMLError ("Unrecognised CPL namespace " + f.namespace_uri()));
83 _id = remove_urn_uuid (f.string_child ("Id"));
84 _annotation_text = f.optional_string_child ("AnnotationText").get_value_or ("");
85 _metadata.issuer = f.optional_string_child ("Issuer").get_value_or ("");
86 _metadata.creator = f.optional_string_child ("Creator").get_value_or ("");
87 _metadata.issue_date = f.string_child ("IssueDate");
88 _content_title_text = f.string_child ("ContentTitleText");
89 _content_kind = content_kind_from_string (f.string_child ("ContentKind"));
90 shared_ptr<cxml::Node> content_version = f.optional_node_child ("ContentVersion");
91 if (content_version) {
92 _content_version_id = content_version->optional_string_child ("Id").get_value_or ("");
93 _content_version_label_text = content_version->string_child ("LabelText");
94 content_version->done ();
96 f.ignore_child ("RatingList");
97 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
99 f.ignore_child ("Issuer");
100 f.ignore_child ("Signer");
101 f.ignore_child ("Signature");
106 /** Add a reel to this CPL.
107 * @param reel Reel to add.
110 CPL::add (boost::shared_ptr<Reel> reel)
112 _reels.push_back (reel);
115 /** Write an CompositonPlaylist XML file.
116 * @param file Filename to write.
117 * @param standard INTEROP or SMPTE.
118 * @param signer Signer to sign the CPL, or 0 to add no signature.
121 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
124 xmlpp::Element* root;
125 if (standard == INTEROP) {
126 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
128 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
132 root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
135 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
136 root->add_child("AnnotationText")->add_child_text (_annotation_text);
137 root->add_child("IssueDate")->add_child_text (_metadata.issue_date);
138 root->add_child("Issuer")->add_child_text (_metadata.issuer);
139 root->add_child("Creator")->add_child_text (_metadata.creator);
140 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
141 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
143 xmlpp::Node* cv = root->add_child ("ContentVersion");
144 cv->add_child ("Id")->add_child_text (_content_version_id);
145 cv->add_child ("LabelText")->add_child_text (_content_version_label_text);
147 root->add_child("RatingList");
149 xmlpp::Element* reel_list = root->add_child ("ReelList");
151 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
152 i->write_to_cpl (reel_list, standard);
156 signer->sign (root, standard);
159 /* This must not be the _formatted version otherwise signature digests will be wrong */
160 doc.write_to_file (file.string (), "UTF-8");
165 list<shared_ptr<const ReelAsset> >
166 CPL::reel_assets () const
168 list<shared_ptr<const ReelAsset> > c;
170 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
171 if (i->main_picture ()) {
172 c.push_back (i->main_picture());
174 if (i->main_sound ()) {
175 c.push_back (i->main_sound());
177 if (i->main_subtitle ()) {
178 c.push_back (i->main_subtitle());
181 c.push_back (i->atmos());
189 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
191 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
196 if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) {
198 s << "CPL: annotation texts differ: " << _annotation_text << " vs " << other_cpl->_annotation_text << "\n";
199 note (DCP_ERROR, s.str ());
203 if (_content_kind != other_cpl->_content_kind) {
204 note (DCP_ERROR, "CPL: content kinds differ");
208 if (_reels.size() != other_cpl->_reels.size()) {
209 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
213 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
214 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
216 while (a != _reels.end ()) {
217 if (!(*a)->equals (*b, opt, note)) {
227 /** @return true if we have any encrypted content */
229 CPL::encrypted () const
231 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
232 if (i->encrypted ()) {
240 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
241 * to decrypt those assets.
245 CPL::add (DecryptedKDM const & kdm)
247 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
253 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
255 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
256 i->resolve_refs (assets);
261 CPL::pkl_type (Standard standard) const
265 return "text/xml;asdcpKind=CPL";
274 CPL::duration () const
277 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {