2 Copyright (C) 2012-2018 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/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
38 #include "certificate_chain.h"
40 #include "reel_picture_asset.h"
41 #include "reel_sound_asset.h"
42 #include "reel_subtitle_asset.h"
43 #include "reel_closed_caption_asset.h"
44 #include "reel_atmos_asset.h"
45 #include "local_time.h"
46 #include "dcp_assert.h"
47 #include "compose.hpp"
48 #include <libxml/parser.h>
49 #include <libxml++/libxml++.h>
50 #include <boost/foreach.hpp>
57 using boost::shared_ptr;
58 using boost::optional;
59 using boost::dynamic_pointer_cast;
62 static string const cpl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#";
63 static string const cpl_smpte_ns = "http://www.smpte-ra.org/schemas/429-7/2006/CPL";
65 CPL::CPL (string annotation_text, ContentKind content_kind)
66 /* default _content_title_text to annotation_text */
67 : _content_title_text (annotation_text)
68 , _content_kind (content_kind)
70 _metadata.annotation_text = annotation_text;
71 /* default _content_version_id to a random ID and _content_version_label to
72 a random ID and the current time.
74 string const uuid = make_uuid();
75 _content_version_id = "urn:uuid:" + uuid;
76 _content_version_label_text = uuid + LocalTime().as_string ();
79 /** Construct a CPL object from a XML file */
80 CPL::CPL (boost::filesystem::path file)
82 , _content_kind (FEATURE)
84 cxml::Document f ("CompositionPlaylist");
87 if (f.namespace_uri() == cpl_interop_ns) {
89 } else if (f.namespace_uri() == cpl_smpte_ns) {
92 boost::throw_exception (XMLError ("Unrecognised CPL namespace " + f.namespace_uri()));
95 _id = remove_urn_uuid (f.string_child ("Id"));
96 _metadata.annotation_text = f.optional_string_child ("AnnotationText").get_value_or ("");
97 _metadata.issuer = f.optional_string_child ("Issuer").get_value_or ("");
98 _metadata.creator = f.optional_string_child ("Creator").get_value_or ("");
99 _metadata.issue_date = f.string_child ("IssueDate");
100 _content_title_text = f.string_child ("ContentTitleText");
101 _content_kind = content_kind_from_string (f.string_child ("ContentKind"));
102 shared_ptr<cxml::Node> content_version = f.optional_node_child ("ContentVersion");
103 if (content_version) {
104 _content_version_id = content_version->optional_string_child ("Id").get_value_or ("");
105 _content_version_label_text = content_version->string_child ("LabelText");
106 content_version->done ();
108 cxml::ConstNodePtr rating_list = f.node_child ("RatingList");
110 BOOST_FOREACH (cxml::ConstNodePtr i, rating_list->node_children("Rating")) {
111 _ratings.push_back (Rating(i));
114 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
116 f.ignore_child ("Issuer");
117 f.ignore_child ("Signer");
118 f.ignore_child ("Signature");
123 /** Add a reel to this CPL.
124 * @param reel Reel to add.
127 CPL::add (boost::shared_ptr<Reel> reel)
129 _reels.push_back (reel);
132 /** Write an CompositonPlaylist XML file.
133 * @param file Filename to write.
134 * @param standard INTEROP or SMPTE.
135 * @param signer Signer to sign the CPL, or 0 to add no signature.
138 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
141 xmlpp::Element* root;
142 if (standard == INTEROP) {
143 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
145 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
149 root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
152 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
153 root->add_child("AnnotationText")->add_child_text (_metadata.annotation_text);
154 root->add_child("IssueDate")->add_child_text (_metadata.issue_date);
155 root->add_child("Issuer")->add_child_text (_metadata.issuer);
156 root->add_child("Creator")->add_child_text (_metadata.creator);
157 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
158 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
160 xmlpp::Node* cv = root->add_child ("ContentVersion");
161 cv->add_child ("Id")->add_child_text (_content_version_id);
162 cv->add_child ("LabelText")->add_child_text (_content_version_label_text);
164 xmlpp::Element* rating_list = root->add_child("RatingList");
165 BOOST_FOREACH (Rating i, _ratings) {
166 i.as_xml (rating_list->add_child("Rating"));
169 xmlpp::Element* reel_list = root->add_child ("ReelList");
171 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
172 i->write_to_cpl (reel_list, standard);
178 signer->sign (root, standard);
181 doc.write_to_file_formatted (file.string(), "UTF-8");
186 list<shared_ptr<ReelMXF> >
189 list<shared_ptr<ReelMXF> > c;
191 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
192 if (i->main_picture ()) {
193 c.push_back (i->main_picture());
195 if (i->main_sound ()) {
196 c.push_back (i->main_sound());
198 if (i->main_subtitle ()) {
199 c.push_back (i->main_subtitle());
201 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
205 c.push_back (i->atmos());
212 list<shared_ptr<const ReelMXF> >
213 CPL::reel_mxfs () const
215 list<shared_ptr<const ReelMXF> > c;
217 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
218 if (i->main_picture ()) {
219 c.push_back (i->main_picture());
221 if (i->main_sound ()) {
222 c.push_back (i->main_sound());
224 if (i->main_subtitle ()) {
225 c.push_back (i->main_subtitle());
227 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
231 c.push_back (i->atmos());
239 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
241 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
246 if (_metadata.annotation_text != other_cpl->_metadata.annotation_text && !opt.cpl_annotation_texts_can_differ) {
247 string const s = "CPL: annotation texts differ: " + _metadata.annotation_text + " vs " + other_cpl->_metadata.annotation_text + "\n";
252 if (_content_kind != other_cpl->_content_kind) {
253 note (DCP_ERROR, "CPL: content kinds differ");
257 if (_reels.size() != other_cpl->_reels.size()) {
258 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
262 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
263 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
265 while (a != _reels.end ()) {
266 if (!(*a)->equals (*b, opt, note)) {
276 /** @return true if we have any encrypted content */
278 CPL::encrypted () const
280 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
281 if (i->encrypted ()) {
289 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
290 * to decrypt those assets.
294 CPL::add (DecryptedKDM const & kdm)
296 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
302 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
304 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
305 i->resolve_refs (assets);
310 CPL::pkl_type (Standard standard) const
312 return static_pkl_type (standard);
316 CPL::static_pkl_type (Standard standard)
320 return "text/xml;asdcpKind=CPL";
329 CPL::duration () const
332 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {