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>
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 /* default _content_title_text to annotation_text */
68 : _issuer ("libdcp" LIBDCP_VERSION)
69 , _creator ("libdcp" LIBDCP_VERSION)
70 , _issue_date (LocalTime().as_string())
71 , _annotation_text (annotation_text)
72 , _content_title_text (annotation_text)
73 , _content_kind (content_kind)
76 cv.label_text = cv.id + LocalTime().as_string();
77 _content_versions.push_back (cv);
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 _issuer = f.optional_string_child("Issuer").get_value_or("");
99 _creator = f.optional_string_child("Creator").get_value_or("");
100 _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 /* XXX: SMPTE should insist that Id is present */
106 _content_versions.push_back (
108 content_version->optional_string_child("Id").get_value_or(""),
109 content_version->string_child("LabelText")
112 content_version->done ();
113 } else if (_standard == SMPTE) {
114 /* ContentVersion is required in SMPTE */
115 throw XMLError ("Missing ContentVersion tag in CPL");
117 cxml::ConstNodePtr rating_list = f.node_child ("RatingList");
119 BOOST_FOREACH (cxml::ConstNodePtr i, rating_list->node_children("Rating")) {
120 _ratings.push_back (Rating(i));
123 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
125 f.ignore_child ("Issuer");
126 f.ignore_child ("Signer");
127 f.ignore_child ("Signature");
132 /** Add a reel to this CPL.
133 * @param reel Reel to add.
136 CPL::add (boost::shared_ptr<Reel> reel)
138 _reels.push_back (reel);
141 /** Write an CompositonPlaylist XML file.
142 * @param file Filename to write.
143 * @param standard INTEROP or SMPTE.
144 * @param signer Signer to sign the CPL, or 0 to add no signature.
147 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
150 xmlpp::Element* root;
151 if (standard == INTEROP) {
152 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
154 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
157 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
158 root->add_child("AnnotationText")->add_child_text (_annotation_text);
159 root->add_child("IssueDate")->add_child_text (_issue_date);
160 root->add_child("Issuer")->add_child_text (_issuer);
161 root->add_child("Creator")->add_child_text (_creator);
162 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
163 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
164 DCP_ASSERT (!_content_versions.empty());
165 _content_versions[0].as_xml (root);
167 xmlpp::Element* rating_list = root->add_child("RatingList");
168 BOOST_FOREACH (Rating i, _ratings) {
169 i.as_xml (rating_list->add_child("Rating"));
172 xmlpp::Element* reel_list = root->add_child ("ReelList");
174 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
175 i->write_to_cpl (reel_list, standard);
181 signer->sign (root, standard);
184 doc.write_to_file_formatted (file.string(), "UTF-8");
189 list<shared_ptr<ReelMXF> >
192 list<shared_ptr<ReelMXF> > c;
194 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
195 if (i->main_picture ()) {
196 c.push_back (i->main_picture());
198 if (i->main_sound ()) {
199 c.push_back (i->main_sound());
201 if (i->main_subtitle ()) {
202 c.push_back (i->main_subtitle());
204 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
208 c.push_back (i->atmos());
215 list<shared_ptr<const ReelMXF> >
216 CPL::reel_mxfs () const
218 list<shared_ptr<const ReelMXF> > c;
220 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
221 if (i->main_picture ()) {
222 c.push_back (i->main_picture());
224 if (i->main_sound ()) {
225 c.push_back (i->main_sound());
227 if (i->main_subtitle ()) {
228 c.push_back (i->main_subtitle());
230 BOOST_FOREACH (shared_ptr<ReelClosedCaptionAsset> j, i->closed_captions()) {
234 c.push_back (i->atmos());
242 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
244 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
249 if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) {
250 string const s = "CPL: annotation texts differ: " + _annotation_text + " vs " + other_cpl->_annotation_text + "\n";
255 if (_content_kind != other_cpl->_content_kind) {
256 note (DCP_ERROR, "CPL: content kinds differ");
260 if (_reels.size() != other_cpl->_reels.size()) {
261 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
265 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
266 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
268 while (a != _reels.end ()) {
269 if (!(*a)->equals (*b, opt, note)) {
279 /** @return true if we have any encrypted content */
281 CPL::encrypted () const
283 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
284 if (i->encrypted ()) {
292 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
293 * to decrypt those assets.
297 CPL::add (DecryptedKDM const & kdm)
299 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
305 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
307 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
308 i->resolve_refs (assets);
313 CPL::pkl_type (Standard standard) const
315 return static_pkl_type (standard);
319 CPL::static_pkl_type (Standard standard)
323 return "text/xml;asdcpKind=CPL";
332 CPL::duration () const
335 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
341 CPL::set_content_versions (vector<ContentVersion> v)
344 BOOST_FOREACH (ContentVersion i, v) {
345 if (!ids.insert(i.id).second) {
346 throw DuplicateIdError ("Duplicate ID in ContentVersion list");
350 _content_versions = v;
355 CPL::content_version () const
357 DCP_ASSERT (!_content_versions.empty());
358 return _content_versions[0];