2 Copyright (C) 2012-2014 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 "raw_convert.h"
26 #include "sound_mxf.h"
27 #include "picture_mxf.h"
28 #include "subtitle_content.h"
29 #include "mono_picture_mxf.h"
30 #include "stereo_picture_mxf.h"
33 #include "exceptions.h"
37 #include "compose.hpp"
39 #include "decrypted_kdm.h"
40 #include "decrypted_kdm_key.h"
41 #include <xmlsec/xmldsig.h>
42 #include <xmlsec/app.h>
43 #include <libxml++/libxml++.h>
44 #include <boost/filesystem.hpp>
45 #include <boost/algorithm/string.hpp>
53 using std::stringstream;
59 using boost::shared_ptr;
60 using boost::algorithm::starts_with;
63 DCP::DCP (boost::filesystem::path directory)
64 : _directory (directory)
66 _directory = boost::filesystem::canonical (_directory);
69 template<class T> void
70 survivable_error (bool keep_going, dcp::DCP::ReadErrors* errors, T const & e)
74 errors->push_back (shared_ptr<T> (new T (e)));
82 DCP::read (bool keep_going, ReadErrors* errors)
84 /* Read the ASSETMAP */
86 boost::filesystem::path asset_map_file;
87 if (boost::filesystem::exists (_directory / "ASSETMAP")) {
88 asset_map_file = _directory / "ASSETMAP";
89 } else if (boost::filesystem::exists (_directory / "ASSETMAP.xml")) {
90 asset_map_file = _directory / "ASSETMAP.xml";
92 boost::throw_exception (DCPReadError (String::compose ("could not find AssetMap file `%1'", asset_map_file.string())));
95 cxml::Document asset_map ("AssetMap");
96 asset_map.read_file (asset_map_file);
97 list<shared_ptr<cxml::Node> > asset_nodes = asset_map.node_child("AssetList")->node_children ("Asset");
98 map<string, boost::filesystem::path> paths;
99 for (list<shared_ptr<cxml::Node> >::const_iterator i = asset_nodes.begin(); i != asset_nodes.end(); ++i) {
100 if ((*i)->node_child("ChunkList")->node_children("Chunk").size() != 1) {
101 boost::throw_exception (XMLError ("unsupported asset chunk count"));
103 string p = (*i)->node_child("ChunkList")->node_child("Chunk")->string_child ("Path");
104 if (starts_with (p, "file://")) {
107 paths.insert (make_pair ((*i)->string_child ("Id"), p));
110 /* Read all the assets from the asset map */
111 for (map<string, boost::filesystem::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
112 boost::filesystem::path path = _directory / i->second;
114 if (!boost::filesystem::exists (path)) {
115 survivable_error (keep_going, errors, MissingAssetError (path));
119 if (boost::algorithm::ends_with (path.string(), ".xml")) {
120 xmlpp::DomParser* p = new xmlpp::DomParser;
122 p->parse_file (path.string());
123 } catch (std::exception& e) {
128 string const root = p->get_document()->get_root_node()->get_name ();
131 if (root == "CompositionPlaylist") {
132 _assets.push_back (shared_ptr<CPL> (new CPL (path)));
133 } else if (root == "DCSubtitle") {
134 _assets.push_back (shared_ptr<SubtitleContent> (new SubtitleContent (path, false)));
136 } else if (boost::algorithm::ends_with (path.string(), ".mxf")) {
137 ASDCP::EssenceType_t type;
138 if (ASDCP::EssenceType (path.string().c_str(), type) != ASDCP::RESULT_OK) {
139 throw DCPReadError ("Could not find essence type");
142 case ASDCP::ESS_UNKNOWN:
143 case ASDCP::ESS_MPEG2_VES:
144 throw DCPReadError ("MPEG2 video essences are not supported");
145 case ASDCP::ESS_JPEG_2000:
146 _assets.push_back (shared_ptr<MonoPictureMXF> (new MonoPictureMXF (path)));
148 case ASDCP::ESS_PCM_24b_48k:
149 case ASDCP::ESS_PCM_24b_96k:
150 _assets.push_back (shared_ptr<SoundMXF> (new SoundMXF (path)));
152 case ASDCP::ESS_JPEG_2000_S:
153 _assets.push_back (shared_ptr<StereoPictureMXF> (new StereoPictureMXF (path)));
155 case ASDCP::ESS_TIMED_TEXT:
156 _assets.push_back (shared_ptr<SubtitleContent> (new SubtitleContent (path, true)));
159 throw DCPReadError ("Unknown MXF essence type");
164 list<shared_ptr<CPL> > cpl = cpls ();
165 for (list<shared_ptr<CPL> >::const_iterator i = cpl.begin(); i != cpl.end(); ++i) {
166 (*i)->resolve_refs (list_of_type<Asset, Object> (assets ()));
171 DCP::equals (DCP const & other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
173 if (_assets.size() != other._assets.size()) {
174 note (DCP_ERROR, String::compose ("Asset counts differ: %1 vs %2", _assets.size(), other._assets.size()));
178 list<shared_ptr<Asset> >::const_iterator a = _assets.begin ();
179 list<shared_ptr<Asset> >::const_iterator b = other._assets.begin ();
181 while (a != _assets.end ()) {
182 if (!(*a)->equals (*b, opt, note)) {
193 DCP::add (boost::shared_ptr<Asset> asset)
195 _assets.push_back (asset);
199 DCP::encrypted () const
201 list<shared_ptr<CPL> > cpl = cpls ();
202 for (list<shared_ptr<CPL> >::const_iterator i = cpl.begin(); i != cpl.end(); ++i) {
203 if ((*i)->encrypted ()) {
212 DCP::add (DecryptedKDM const & kdm)
214 list<DecryptedKDMKey> keys = kdm.keys ();
215 list<shared_ptr<CPL> > cpl = cpls ();
217 for (list<shared_ptr<CPL> >::iterator i = cpl.begin(); i != cpl.end(); ++i) {
218 for (list<DecryptedKDMKey>::iterator j = keys.begin(); j != keys.end(); ++j) {
219 if (j->cpl_id() == (*i)->id()) {
226 boost::filesystem::path
227 DCP::write_pkl (Standard standard, string pkl_uuid, XMLMetadata metadata, shared_ptr<const Signer> signer) const
229 boost::filesystem::path p = _directory;
231 s << pkl_uuid << "_pkl.xml";
236 if (standard == INTEROP) {
237 pkl = doc.create_root_node("PackingList", "http://www.digicine.com/PROTO-ASDCP-PKL-20040311#");
239 pkl = doc.create_root_node("PackingList", "http://www.smpte-ra.org/schemas/429-8/2007/PKL");
243 pkl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
246 pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
248 /* XXX: this is a bit of a hack */
249 assert (cpls().size() > 0);
250 pkl->add_child("AnnotationText")->add_child_text (cpls().front()->annotation_text ());
252 pkl->add_child("IssueDate")->add_child_text (metadata.issue_date);
253 pkl->add_child("Issuer")->add_child_text (metadata.issuer);
254 pkl->add_child("Creator")->add_child_text (metadata.creator);
256 xmlpp::Element* asset_list = pkl->add_child("AssetList");
257 for (list<shared_ptr<Asset> >::const_iterator i = _assets.begin(); i != _assets.end(); ++i) {
258 (*i)->write_to_pkl (asset_list, standard);
262 signer->sign (pkl, standard);
265 doc.write_to_file (p.string (), "UTF-8");
269 /** Write the VOLINDEX file.
270 * @param standard DCP standard to use (INTEROP or SMPTE)
273 DCP::write_volindex (Standard standard) const
275 boost::filesystem::path p = _directory;
288 xmlpp::Element* root;
292 root = doc.create_root_node ("VolumeIndex", "http://www.digicine.com/PROTO-ASDCP-AM-20040311#");
295 root = doc.create_root_node ("VolumeIndex", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
301 root->add_child("Index")->add_child_text ("1");
302 doc.write_to_file (p.string (), "UTF-8");
306 DCP::write_assetmap (Standard standard, string pkl_uuid, int pkl_length, XMLMetadata metadata) const
308 boost::filesystem::path p = _directory;
322 xmlpp::Element* root;
326 root = doc.create_root_node ("AssetMap", "http://www.digicine.com/PROTO-ASDCP-AM-20040311#");
329 root = doc.create_root_node ("AssetMap", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
335 root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
336 root->add_child("AnnotationText")->add_child_text ("Created by " + metadata.creator);
340 root->add_child("VolumeCount")->add_child_text ("1");
341 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
342 root->add_child("Issuer")->add_child_text (metadata.issuer);
343 root->add_child("Creator")->add_child_text (metadata.creator);
346 root->add_child("Creator")->add_child_text (metadata.creator);
347 root->add_child("VolumeCount")->add_child_text ("1");
348 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
349 root->add_child("Issuer")->add_child_text (metadata.issuer);
355 xmlpp::Node* asset_list = root->add_child ("AssetList");
357 xmlpp::Node* asset = asset_list->add_child ("Asset");
358 asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
359 asset->add_child("PackingList")->add_child_text ("true");
360 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
361 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
362 chunk->add_child("Path")->add_child_text (pkl_uuid + "_pkl.xml");
363 chunk->add_child("VolumeIndex")->add_child_text ("1");
364 chunk->add_child("Offset")->add_child_text ("0");
365 chunk->add_child("Length")->add_child_text (raw_convert<string> (pkl_length));
367 for (list<shared_ptr<Asset> >::const_iterator i = _assets.begin(); i != _assets.end(); ++i) {
368 (*i)->write_to_assetmap (asset_list, _directory);
371 /* This must not be the _formatted version otherwise signature digests will be wrong */
372 doc.write_to_file (p.string (), "UTF-8");
375 /** Write all the XML files for this DCP.
376 * @param standand INTEROP or SMPTE.
377 * @param metadata Metadata to use for PKL and asset map files.
378 * @param signer Signer to use, or 0.
383 XMLMetadata metadata,
384 shared_ptr<const Signer> signer
387 list<shared_ptr<CPL> > cpl = cpls ();
388 for (list<shared_ptr<CPL> >::const_iterator i = cpl.begin(); i != cpl.end(); ++i) {
389 string const filename = (*i)->id() + "_cpl.xml";
390 (*i)->write_xml (_directory / filename, standard, signer);
393 string const pkl_uuid = make_uuid ();
394 boost::filesystem::path const pkl_path = write_pkl (standard, pkl_uuid, metadata, signer);
396 write_volindex (standard);
397 write_assetmap (standard, pkl_uuid, boost::filesystem::file_size (pkl_path), metadata);
400 list<shared_ptr<CPL> >
403 return list_of_type<Asset, CPL> (_assets);