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/>.
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_atmos_asset.h"
44 #include "local_time.h"
45 #include "dcp_assert.h"
46 #include "compose.hpp"
47 #include <libxml/parser.h>
48 #include <libxml++/libxml++.h>
49 #include <boost/foreach.hpp>
52 using std::stringstream;
58 using boost::shared_ptr;
59 using boost::optional;
60 using boost::dynamic_pointer_cast;
63 static string const cpl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#";
64 static string const cpl_smpte_ns = "http://www.smpte-ra.org/schemas/429-7/2006/CPL";
66 CPL::CPL (string annotation_text, ContentKind content_kind)
67 : _annotation_text (annotation_text)
68 /* default _content_title_text to _annotation_text */
69 , _content_title_text (annotation_text)
70 , _content_kind (content_kind)
71 , _content_version_id ("urn:uuid:" + make_uuid ())
73 /* default _content_version_id to a random ID and _content_version_label to
74 a random ID and the current time.
76 _content_version_id = "urn:uuid:" + make_uuid();
77 _content_version_label_text = _content_version_id + LocalTime().as_string ();
80 /** Construct a CPL object from a XML file */
81 CPL::CPL (boost::filesystem::path file)
83 , _content_kind (FEATURE)
85 cxml::Document f ("CompositionPlaylist");
88 if (f.namespace_uri() == cpl_interop_ns) {
90 } else if (f.namespace_uri() == cpl_smpte_ns) {
93 boost::throw_exception (XMLError ("Unrecognised CPL namespace " + f.namespace_uri()));
96 _id = remove_urn_uuid (f.string_child ("Id"));
97 _annotation_text = f.optional_string_child ("AnnotationText").get_value_or ("");
98 _metadata.issuer = f.optional_string_child ("Issuer").get_value_or ("");
99 _metadata.creator = f.optional_string_child ("Creator").get_value_or ("");
100 _metadata.issue_date = f.string_child ("IssueDate");
101 _content_title_text = f.string_child ("ContentTitleText");
102 _content_kind = content_kind_from_string (f.string_child ("ContentKind"));
103 shared_ptr<cxml::Node> content_version = f.optional_node_child ("ContentVersion");
104 if (content_version) {
105 _content_version_id = content_version->optional_string_child ("Id").get_value_or ("");
106 _content_version_label_text = content_version->string_child ("LabelText");
107 content_version->done ();
109 f.ignore_child ("RatingList");
110 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
112 f.ignore_child ("Issuer");
113 f.ignore_child ("Signer");
114 f.ignore_child ("Signature");
119 /** Add a reel to this CPL.
120 * @param reel Reel to add.
123 CPL::add (boost::shared_ptr<Reel> reel)
125 _reels.push_back (reel);
128 /** Write an CompositonPlaylist XML file.
129 * @param file Filename to write.
130 * @param standard INTEROP or SMPTE.
131 * @param signer Signer to sign the CPL, or 0 to add no signature.
134 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
137 xmlpp::Element* root;
138 if (standard == INTEROP) {
139 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
141 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
145 root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
148 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
149 root->add_child("AnnotationText")->add_child_text (_annotation_text);
150 root->add_child("IssueDate")->add_child_text (_metadata.issue_date);
151 root->add_child("Issuer")->add_child_text (_metadata.issuer);
152 root->add_child("Creator")->add_child_text (_metadata.creator);
153 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
154 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
156 xmlpp::Node* cv = root->add_child ("ContentVersion");
157 cv->add_child ("Id")->add_child_text (_content_version_id);
158 cv->add_child ("LabelText")->add_child_text (_content_version_label_text);
160 root->add_child("RatingList");
162 xmlpp::Element* reel_list = root->add_child ("ReelList");
164 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
165 i->write_to_cpl (reel_list, standard);
169 signer->sign (root, standard);
172 /* This must not be the _formatted version otherwise signature digests will be wrong */
173 doc.write_to_file (file.string (), "UTF-8");
178 list<shared_ptr<const ReelAsset> >
179 CPL::reel_assets () const
181 list<shared_ptr<const ReelAsset> > c;
183 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
184 if (i->main_picture ()) {
185 c.push_back (i->main_picture());
187 if (i->main_sound ()) {
188 c.push_back (i->main_sound());
190 if (i->main_subtitle ()) {
191 c.push_back (i->main_subtitle());
194 c.push_back (i->atmos());
202 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
204 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
209 if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) {
211 s << "CPL: annotation texts differ: " << _annotation_text << " vs " << other_cpl->_annotation_text << "\n";
212 note (DCP_ERROR, s.str ());
216 if (_content_kind != other_cpl->_content_kind) {
217 note (DCP_ERROR, "CPL: content kinds differ");
221 if (_reels.size() != other_cpl->_reels.size()) {
222 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
226 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
227 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
229 while (a != _reels.end ()) {
230 if (!(*a)->equals (*b, opt, note)) {
240 /** @return true if we have any encrypted content */
242 CPL::encrypted () const
244 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
245 if (i->encrypted ()) {
253 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
254 * to decrypt those assets.
258 CPL::add (DecryptedKDM const & kdm)
260 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
266 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
268 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
269 i->resolve_refs (assets);
274 CPL::pkl_type (Standard standard) const
278 return "text/xml;asdcpKind=CPL";
287 CPL::duration () const
290 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {