2 Copyright (C) 2012 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.
21 * @brief A class to create a DCP.
29 #include <boost/filesystem.hpp>
30 #include <boost/lexical_cast.hpp>
31 #include <boost/algorithm/string.hpp>
32 #include <boost/lexical_cast.hpp>
33 #include <libxml++/libxml++.h>
34 #include <xmlsec/xmldsig.h>
35 #include <xmlsec/app.h>
38 #include "sound_asset.h"
39 #include "picture_asset.h"
40 #include "subtitle_asset.h"
43 #include "exceptions.h"
44 #include "parse/pkl.h"
45 #include "parse/asset_map.h"
48 #include "encryption.h"
53 using std::stringstream;
56 using boost::shared_ptr;
57 using boost::lexical_cast;
58 using namespace libdcp;
60 DCP::DCP (string directory)
61 : _directory (directory)
63 boost::filesystem::create_directories (directory);
67 DCP::write_xml (bool interop, XMLMetadata const & metadata, shared_ptr<Encryption> crypt) const
69 for (list<shared_ptr<CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
70 (*i)->write_xml (interop, metadata, crypt);
73 string pkl_uuid = make_uuid ();
74 string pkl_path = write_pkl (pkl_uuid, interop, metadata, crypt);
77 write_assetmap (pkl_uuid, boost::filesystem::file_size (pkl_path), interop, metadata);
81 DCP::write_pkl (string pkl_uuid, bool interop, XMLMetadata const & metadata, shared_ptr<Encryption> crypt) const
83 assert (!_cpls.empty ());
85 boost::filesystem::path p;
88 s << pkl_uuid << "_pkl.xml";
94 pkl = doc.create_root_node("PackingList", "http://www.digicine.com/PROTO-ASDCP-PKL-20040311#");
96 pkl = doc.create_root_node("PackingList", "http://www.smpte-ra.org/schemas/429-8/2007/PKL");
100 pkl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
103 pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
104 /* XXX: this is a bit of a hack */
105 pkl->add_child("AnnotationText")->add_child_text(_cpls.front()->name());
106 pkl->add_child("IssueDate")->add_child_text (metadata.issue_date);
107 pkl->add_child("Issuer")->add_child_text (metadata.issuer);
108 pkl->add_child("Creator")->add_child_text (metadata.creator);
110 xmlpp::Element* asset_list = pkl->add_child("AssetList");
111 list<shared_ptr<const Asset> > a = assets ();
112 for (list<shared_ptr<const Asset> >::const_iterator i = a.begin(); i != a.end(); ++i) {
113 (*i)->write_to_pkl (asset_list);
116 for (list<shared_ptr<CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
117 (*i)->write_to_pkl (asset_list);
121 sign (pkl, crypt->certificates, crypt->signer_key, interop);
124 doc.write_to_file_formatted (p.string (), "UTF-8");
129 DCP::write_volindex () const
131 boost::filesystem::path p;
136 xmlpp::Element* root = doc.create_root_node ("VolumeIndex", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
137 root->add_child("Index")->add_child_text ("1");
138 doc.write_to_file_formatted (p.string (), "UTF-8");
142 DCP::write_assetmap (string pkl_uuid, int pkl_length, bool interop, XMLMetadata const & metadata) const
144 boost::filesystem::path p;
149 xmlpp::Element* root;
151 root = doc.create_root_node ("AssetMap", "http://www.digicine.com/PROTO-ASDCP-AM-20040311#");
153 root = doc.create_root_node ("AssetMap", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
156 root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
157 root->add_child("Creator")->add_child_text (metadata.creator);
158 root->add_child("VolumeCount")->add_child_text ("1");
159 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
160 root->add_child("Issuer")->add_child_text (metadata.issuer);
161 xmlpp::Node* asset_list = root->add_child ("AssetList");
163 xmlpp::Node* asset = asset_list->add_child ("Asset");
164 asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
165 asset->add_child("PackingList")->add_child_text ("true");
166 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
167 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
168 chunk->add_child("Path")->add_child_text (pkl_uuid + "_pkl.xml");
169 chunk->add_child("VolumeIndex")->add_child_text ("1");
170 chunk->add_child("Offset")->add_child_text ("0");
171 chunk->add_child("Length")->add_child_text (lexical_cast<string> (pkl_length));
173 for (list<shared_ptr<CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
174 (*i)->write_to_assetmap (asset_list);
177 list<shared_ptr<const Asset> > a = assets ();
178 for (list<shared_ptr<const Asset> >::const_iterator i = a.begin(); i != a.end(); ++i) {
179 (*i)->write_to_assetmap (asset_list);
182 doc.write_to_file_formatted (p.string (), "UTF-8");
187 DCP::read (bool require_mxfs)
191 shared_ptr<parse::AssetMap> asset_map;
193 boost::filesystem::path p = _directory;
195 if (boost::filesystem::exists (p)) {
196 asset_map.reset (new libdcp::parse::AssetMap (p.string ()));
200 if (boost::filesystem::exists (p)) {
201 asset_map.reset (new libdcp::parse::AssetMap (p.string ()));
203 boost::throw_exception (DCPReadError ("could not find AssetMap file"));
207 } catch (FileError& e) {
208 boost::throw_exception (FileError ("could not load AssetMap file", files.asset_map));
211 for (list<shared_ptr<libdcp::parse::AssetMapAsset> >::const_iterator i = asset_map->assets.begin(); i != asset_map->assets.end(); ++i) {
212 if ((*i)->chunks.size() != 1) {
213 boost::throw_exception (XMLError ("unsupported asset chunk count"));
216 boost::filesystem::path t = _directory;
217 t /= (*i)->chunks.front()->path;
219 if (boost::algorithm::ends_with (t.string(), ".mxf") || boost::algorithm::ends_with (t.string(), ".ttf")) {
223 xmlpp::DomParser* p = new xmlpp::DomParser;
225 p->parse_file (t.string());
226 } catch (std::exception& e) {
231 string const root = p->get_document()->get_root_node()->get_name ();
234 if (root == "CompositionPlaylist") {
235 files.cpls.push_back (t.string());
236 } else if (root == "PackingList") {
237 if (files.pkl.empty ()) {
238 files.pkl = t.string();
240 boost::throw_exception (DCPReadError ("duplicate PKLs found"));
245 if (files.cpls.empty ()) {
246 boost::throw_exception (FileError ("no CPL files found", ""));
249 if (files.pkl.empty ()) {
250 boost::throw_exception (FileError ("no PKL file found", ""));
253 shared_ptr<parse::PKL> pkl;
255 pkl.reset (new parse::PKL (files.pkl));
256 } catch (FileError& e) {
257 boost::throw_exception (FileError ("could not load PKL file", files.pkl));
263 for (list<string>::iterator i = files.cpls.begin(); i != files.cpls.end(); ++i) {
264 _cpls.push_back (shared_ptr<CPL> (new CPL (_directory, *i, asset_map, require_mxfs)));
269 DCP::equals (DCP const & other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
271 if (_cpls.size() != other._cpls.size()) {
272 note (ERROR, "CPL counts differ");
276 list<shared_ptr<CPL> >::const_iterator a = _cpls.begin ();
277 list<shared_ptr<CPL> >::const_iterator b = other._cpls.begin ();
279 while (a != _cpls.end ()) {
280 if (!(*a)->equals (*b->get(), opt, note)) {
291 DCP::add_cpl (shared_ptr<CPL> cpl)
293 _cpls.push_back (cpl);
296 class AssetComparator
299 bool operator() (shared_ptr<const Asset> a, shared_ptr<const Asset> b) {
300 return a->uuid() < b->uuid();
304 list<shared_ptr<const Asset> >
307 list<shared_ptr<const Asset> > a;
308 for (list<shared_ptr<CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
309 list<shared_ptr<const Asset> > t = (*i)->assets ();
313 a.sort (AssetComparator ());
319 DCP::encrypted () const
321 for (list<shared_ptr<CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
322 if ((*i)->encrypted ()) {
331 DCP::add_kdm (KDM const & kdm)
333 list<KDMCipher> ciphers = kdm.ciphers ();
335 for (list<shared_ptr<CPL> >::iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
336 for (list<KDMCipher>::iterator j = ciphers.begin(); j != ciphers.end(); ++j) {
337 if (j->cpl_id() == (*i)->id()) {