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 : _issuer ("libdcp" LIBDCP_VERSION)
68 , _creator ("libdcp" LIBDCP_VERSION)
69 , _issue_date (LocalTime().as_string())
70 , _annotation_text (annotation_text)
71 , _content_title_text (annotation_text)
72 , _content_kind (content_kind)
74 /* default _content_version_id to a random ID and _content_version_label to
75 a random ID and the current time.
77 string const uuid = make_uuid();
78 _content_version_id = "urn:uuid:" + uuid;
79 _content_version_label_text = uuid + LocalTime().as_string ();
82 /** Construct a CPL object from a XML file */
83 CPL::CPL (boost::filesystem::path file)
85 , _content_kind (FEATURE)
87 cxml::Document f ("CompositionPlaylist");
90 if (f.namespace_uri() == cpl_interop_ns) {
92 } else if (f.namespace_uri() == cpl_smpte_ns) {
95 boost::throw_exception (XMLError ("Unrecognised CPL namespace " + f.namespace_uri()));
98 _id = remove_urn_uuid (f.string_child ("Id"));
99 _annotation_text = f.optional_string_child("AnnotationText").get_value_or("");
100 _issuer = f.optional_string_child("Issuer").get_value_or("");
101 _creator = f.optional_string_child("Creator").get_value_or("");
102 _issue_date = f.string_child ("IssueDate");
103 _content_title_text = f.string_child ("ContentTitleText");
104 _content_kind = content_kind_from_string (f.string_child ("ContentKind"));
105 shared_ptr<cxml::Node> content_version = f.optional_node_child ("ContentVersion");
106 if (content_version) {
107 _content_version_id = content_version->optional_string_child ("Id").get_value_or ("");
108 _content_version_label_text = content_version->string_child ("LabelText");
109 content_version->done ();
110 } else if (_standard == SMPTE) {
111 /* ContentVersion is required in SMPTE */
112 throw XMLError ("Missing ContentVersion tag in CPL");
114 cxml::ConstNodePtr rating_list = f.node_child ("RatingList");
116 BOOST_FOREACH (cxml::ConstNodePtr i, rating_list->node_children("Rating")) {
117 _ratings.push_back (Rating(i));
120 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
122 f.ignore_child ("Issuer");
123 f.ignore_child ("Signer");
124 f.ignore_child ("Signature");
129 /** Add a reel to this CPL.
130 * @param reel Reel to add.
133 CPL::add (boost::shared_ptr<Reel> reel)
135 _reels.push_back (reel);
138 /** Write an CompositonPlaylist XML file.
139 * @param file Filename to write.
140 * @param standard INTEROP or SMPTE.
141 * @param signer Signer to sign the CPL, or 0 to add no signature.
144 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
147 xmlpp::Element* root;
148 if (standard == INTEROP) {
149 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
151 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
154 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
155 root->add_child("AnnotationText")->add_child_text (_annotation_text);
156 root->add_child("IssueDate")->add_child_text (_issue_date);
157 root->add_child("Issuer")->add_child_text (_issuer);
158 root->add_child("Creator")->add_child_text (_creator);
159 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
160 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
162 xmlpp::Node* cv = root->add_child ("ContentVersion");
163 cv->add_child ("Id")->add_child_text (_content_version_id);
164 cv->add_child ("LabelText")->add_child_text (_content_version_label_text);
166 xmlpp::Element* rating_list = root->add_child("RatingList");
167 BOOST_FOREACH (Rating i, _ratings) {
168 i.as_xml (rating_list->add_child("Rating"));
171 xmlpp::Element* reel_list = root->add_child ("ReelList");
173 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
174 i->write_to_cpl (reel_list, standard);
180 signer->sign (root, standard);
183 doc.write_to_file_formatted (file.string(), "UTF-8");
188 list<shared_ptr<ReelMXF> >
191 list<shared_ptr<ReelMXF> > c;
193 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
194 if (i->main_picture ()) {
195 c.push_back (i->main_picture());
197 if (i->main_sound ()) {
198 c.push_back (i->main_sound());
200 if (i->main_subtitle ()) {
201 c.push_back (i->main_subtitle());
203 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
207 c.push_back (i->atmos());
214 list<shared_ptr<const ReelMXF> >
215 CPL::reel_mxfs () const
217 list<shared_ptr<const ReelMXF> > c;
219 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
220 if (i->main_picture ()) {
221 c.push_back (i->main_picture());
223 if (i->main_sound ()) {
224 c.push_back (i->main_sound());
226 if (i->main_subtitle ()) {
227 c.push_back (i->main_subtitle());
229 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
233 c.push_back (i->atmos());
241 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
243 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
248 if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) {
249 string const s = "CPL: annotation texts differ: " + _annotation_text + " vs " + other_cpl->_annotation_text + "\n";
254 if (_content_kind != other_cpl->_content_kind) {
255 note (DCP_ERROR, "CPL: content kinds differ");
259 if (_reels.size() != other_cpl->_reels.size()) {
260 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
264 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
265 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
267 while (a != _reels.end ()) {
268 if (!(*a)->equals (*b, opt, note)) {
278 /** @return true if we have any encrypted content */
280 CPL::encrypted () const
282 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
283 if (i->encrypted ()) {
291 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
292 * to decrypt those assets.
296 CPL::add (DecryptedKDM const & kdm)
298 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
304 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
306 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
307 i->resolve_refs (assets);
312 CPL::pkl_type (Standard standard) const
314 return static_pkl_type (standard);
318 CPL::static_pkl_type (Standard standard)
322 return "text/xml;asdcpKind=CPL";
331 CPL::duration () const
334 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {