2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include "certificate_chain.h"
26 #include "reel_picture_asset.h"
27 #include "reel_sound_asset.h"
28 #include "reel_subtitle_asset.h"
29 #include "local_time.h"
30 #include "dcp_assert.h"
31 #include "compose.hpp"
32 #include <libxml/parser.h>
33 #include <libxml++/libxml++.h>
34 #include <boost/foreach.hpp>
37 using std::stringstream;
43 using boost::shared_ptr;
44 using boost::optional;
45 using boost::dynamic_pointer_cast;
48 static string const cpl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#";
49 static string const cpl_smpte_ns = "http://www.smpte-ra.org/schemas/429-7/2006/CPL";
51 CPL::CPL (string annotation_text, ContentKind content_kind)
52 : _annotation_text (annotation_text)
53 /* default _content_title_text to _annotation_text */
54 , _content_title_text (annotation_text)
55 , _content_kind (content_kind)
56 , _content_version_id ("urn:uuid:" + make_uuid ())
58 /* default _content_version_id to a random ID and _content_version_label to
59 a random ID and the current time.
61 _content_version_id = "urn:uuid:" + make_uuid();
62 _content_version_label_text = _content_version_id + LocalTime().as_string ();
65 /** Construct a CPL object from a XML file */
66 CPL::CPL (boost::filesystem::path file)
68 , _content_kind (FEATURE)
70 cxml::Document f ("CompositionPlaylist");
73 _id = remove_urn_uuid (f.string_child ("Id"));
74 _annotation_text = f.optional_string_child ("AnnotationText").get_value_or ("");
75 _metadata.issuer = f.optional_string_child ("Issuer").get_value_or ("");
76 _metadata.creator = f.optional_string_child ("Creator").get_value_or ("");
77 _metadata.issue_date = f.string_child ("IssueDate");
78 _content_title_text = f.string_child ("ContentTitleText");
79 _content_kind = content_kind_from_string (f.string_child ("ContentKind"));
80 shared_ptr<cxml::Node> content_version = f.optional_node_child ("ContentVersion");
81 if (content_version) {
82 _content_version_id = content_version->optional_string_child ("Id").get_value_or ("");
83 _content_version_label_text = content_version->string_child ("LabelText");
84 content_version->done ();
86 f.ignore_child ("RatingList");
87 _reels = type_grand_children<Reel> (f, "ReelList", "Reel");
89 f.ignore_child ("Issuer");
90 f.ignore_child ("Signer");
91 f.ignore_child ("Signature");
96 /** Add a reel to this CPL.
97 * @param reel Reel to add.
100 CPL::add (boost::shared_ptr<Reel> reel)
102 _reels.push_back (reel);
105 /** Write an CompositonPlaylist XML file.
106 * @param file Filename to write.
107 * @param standard INTEROP or SMPTE.
108 * @param signer Signer to sign the CPL, or 0 to add no signature.
111 CPL::write_xml (boost::filesystem::path file, Standard standard, shared_ptr<const CertificateChain> signer) const
114 xmlpp::Element* root;
115 if (standard == INTEROP) {
116 root = doc.create_root_node ("CompositionPlaylist", cpl_interop_ns);
118 root = doc.create_root_node ("CompositionPlaylist", cpl_smpte_ns);
122 root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
125 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
126 root->add_child("AnnotationText")->add_child_text (_annotation_text);
127 root->add_child("IssueDate")->add_child_text (_metadata.issue_date);
128 root->add_child("Issuer")->add_child_text (_metadata.issuer);
129 root->add_child("Creator")->add_child_text (_metadata.creator);
130 root->add_child("ContentTitleText")->add_child_text (_content_title_text);
131 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
133 xmlpp::Node* cv = root->add_child ("ContentVersion");
134 cv->add_child ("Id")->add_child_text (_content_version_id);
135 cv->add_child ("LabelText")->add_child_text (_content_version_label_text);
137 root->add_child("RatingList");
139 xmlpp::Element* reel_list = root->add_child ("ReelList");
141 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
142 i->write_to_cpl (reel_list, standard);
146 signer->sign (root, standard);
149 /* This must not be the _formatted version otherwise signature digests will be wrong */
150 doc.write_to_file (file.string (), "UTF-8");
155 list<shared_ptr<const ReelAsset> >
156 CPL::reel_assets () const
158 list<shared_ptr<const ReelAsset> > c;
160 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
161 if (i->main_picture ()) {
162 c.push_back (i->main_picture());
164 if (i->main_sound ()) {
165 c.push_back (i->main_sound());
167 if (i->main_subtitle ()) {
168 c.push_back (i->main_subtitle());
176 CPL::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
178 shared_ptr<const CPL> other_cpl = dynamic_pointer_cast<const CPL> (other);
183 if (_annotation_text != other_cpl->_annotation_text && !opt.cpl_annotation_texts_can_differ) {
185 s << "CPL: annotation texts differ: " << _annotation_text << " vs " << other_cpl->_annotation_text << "\n";
186 note (DCP_ERROR, s.str ());
190 if (_content_kind != other_cpl->_content_kind) {
191 note (DCP_ERROR, "CPL: content kinds differ");
195 if (_reels.size() != other_cpl->_reels.size()) {
196 note (DCP_ERROR, String::compose ("CPL: reel counts differ (%1 vs %2)", _reels.size(), other_cpl->_reels.size()));
200 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
201 list<shared_ptr<Reel> >::const_iterator b = other_cpl->_reels.begin ();
203 while (a != _reels.end ()) {
204 if (!(*a)->equals (*b, opt, note)) {
214 /** @return true if we have any encrypted content */
216 CPL::encrypted () const
218 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
219 if (i->encrypted ()) {
227 /** Add a KDM to this CPL. If the KDM is for any of this CPLs assets it will be used
228 * to decrypt those assets.
232 CPL::add (DecryptedKDM const & kdm)
234 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
240 CPL::resolve_refs (list<shared_ptr<Asset> > assets)
242 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {
243 i->resolve_refs (assets);
248 CPL::pkl_type (Standard standard) const
252 return "text/xml;asdcpKind=CPL";
261 CPL::duration () const
264 BOOST_FOREACH (shared_ptr<Reel> i, _reels) {