2 Copyright (C) 2012-2015 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 "raw_convert.h"
40 #include "sound_asset.h"
41 #include "picture_asset.h"
42 #include "interop_subtitle_asset.h"
43 #include "smpte_subtitle_asset.h"
44 #include "mono_picture_asset.h"
45 #include "stereo_picture_asset.h"
46 #include "reel_subtitle_asset.h"
49 #include "exceptions.h"
51 #include "certificate_chain.h"
52 #include "compose.hpp"
53 #include "decrypted_kdm.h"
54 #include "decrypted_kdm_key.h"
55 #include "dcp_assert.h"
56 #include "reel_asset.h"
57 #include "font_asset.h"
58 #include <asdcp/AS_DCP.h>
59 #include <xmlsec/xmldsig.h>
60 #include <xmlsec/app.h>
61 #include <libxml++/libxml++.h>
62 #include <boost/filesystem.hpp>
63 #include <boost/algorithm/string.hpp>
64 #include <boost/foreach.hpp>
75 using boost::shared_ptr;
76 using boost::dynamic_pointer_cast;
77 using boost::algorithm::starts_with;
80 static string const assetmap_interop_ns = "http://www.digicine.com/PROTO-ASDCP-AM-20040311#";
81 static string const assetmap_smpte_ns = "http://www.smpte-ra.org/schemas/429-9/2007/AM";
82 static string const pkl_interop_ns = "http://www.digicine.com/PROTO-ASDCP-PKL-20040311#";
83 static string const pkl_smpte_ns = "http://www.smpte-ra.org/schemas/429-8/2007/PKL";
84 static string const volindex_interop_ns = "http://www.digicine.com/PROTO-ASDCP-AM-20040311#";
85 static string const volindex_smpte_ns = "http://www.smpte-ra.org/schemas/429-9/2007/AM";
87 DCP::DCP (boost::filesystem::path directory)
88 : _directory (directory)
90 if (!boost::filesystem::exists (directory)) {
91 boost::filesystem::create_directories (directory);
94 _directory = boost::filesystem::canonical (_directory);
97 /** Call this instead of throwing an exception if the error can be tolerated */
98 template<class T> void
99 survivable_error (bool keep_going, dcp::DCP::ReadErrors* errors, T const & e)
103 errors->push_back (shared_ptr<T> (new T (e)));
111 DCP::read (bool keep_going, ReadErrors* errors, bool ignore_incorrect_picture_mxf_type)
113 /* Read the ASSETMAP */
115 boost::filesystem::path asset_map_file;
116 if (boost::filesystem::exists (_directory / "ASSETMAP")) {
117 asset_map_file = _directory / "ASSETMAP";
118 } else if (boost::filesystem::exists (_directory / "ASSETMAP.xml")) {
119 asset_map_file = _directory / "ASSETMAP.xml";
121 boost::throw_exception (DCPReadError (String::compose ("could not find AssetMap file in `%1'", _directory.string())));
124 cxml::Document asset_map ("AssetMap");
126 asset_map.read_file (asset_map_file);
127 if (asset_map.namespace_uri() == assetmap_interop_ns) {
129 } else if (asset_map.namespace_uri() == assetmap_smpte_ns) {
132 boost::throw_exception (XMLError ("Unrecognised Assetmap namespace " + asset_map.namespace_uri()));
135 list<shared_ptr<cxml::Node> > asset_nodes = asset_map.node_child("AssetList")->node_children ("Asset");
136 map<string, boost::filesystem::path> paths;
137 BOOST_FOREACH (shared_ptr<cxml::Node> i, asset_nodes) {
138 if (i->node_child("ChunkList")->node_children("Chunk").size() != 1) {
139 boost::throw_exception (XMLError ("unsupported asset chunk count"));
141 string p = i->node_child("ChunkList")->node_child("Chunk")->string_child ("Path");
142 if (starts_with (p, "file://")) {
145 paths.insert (make_pair (remove_urn_uuid (i->string_child ("Id")), p));
148 /* Read all the assets from the asset map */
149 /* XXX: I think we should be looking at the PKL here to decide type, not
150 the extension of the file.
153 /* Make a list of non-CPL assets so that we can resolve the references
156 list<shared_ptr<Asset> > other_assets;
158 for (map<string, boost::filesystem::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
159 boost::filesystem::path path = _directory / i->second;
161 if (!boost::filesystem::exists (path)) {
162 survivable_error (keep_going, errors, MissingAssetError (path));
166 if (boost::filesystem::extension (path) == ".xml") {
167 xmlpp::DomParser* p = new xmlpp::DomParser;
169 p->parse_file (path.string());
170 } catch (std::exception& e) {
175 string const root = p->get_document()->get_root_node()->get_name ();
178 if (root == "CompositionPlaylist") {
179 shared_ptr<CPL> cpl (new CPL (path));
180 if (_standard && cpl->standard() && cpl->standard().get() != _standard.get()) {
181 survivable_error (keep_going, errors, MismatchedStandardError ());
183 _cpls.push_back (cpl);
184 } else if (root == "DCSubtitle") {
185 if (_standard && _standard.get() == SMPTE) {
186 survivable_error (keep_going, errors, MismatchedStandardError ());
188 other_assets.push_back (shared_ptr<InteropSubtitleAsset> (new InteropSubtitleAsset (path)));
190 } else if (boost::filesystem::extension (path) == ".mxf") {
192 /* XXX: asdcplib does not appear to support discovery of read MXFs standard
196 ASDCP::EssenceType_t type;
197 if (ASDCP::EssenceType (path.string().c_str(), type) != ASDCP::RESULT_OK) {
198 throw DCPReadError ("Could not find essence type");
201 case ASDCP::ESS_UNKNOWN:
202 case ASDCP::ESS_MPEG2_VES:
203 throw DCPReadError ("MPEG2 video essences are not supported");
204 case ASDCP::ESS_JPEG_2000:
206 other_assets.push_back (shared_ptr<MonoPictureAsset> (new MonoPictureAsset (path)));
207 } catch (dcp::MXFFileError& e) {
208 if (ignore_incorrect_picture_mxf_type && e.number() == ASDCP::RESULT_SFORMAT) {
209 /* Tried to load it as mono but the error says it's stereo; try that instead */
210 other_assets.push_back (shared_ptr<StereoPictureAsset> (new StereoPictureAsset (path)));
216 case ASDCP::ESS_PCM_24b_48k:
217 case ASDCP::ESS_PCM_24b_96k:
218 other_assets.push_back (shared_ptr<SoundAsset> (new SoundAsset (path)));
220 case ASDCP::ESS_JPEG_2000_S:
221 other_assets.push_back (shared_ptr<StereoPictureAsset> (new StereoPictureAsset (path)));
223 case ASDCP::ESS_TIMED_TEXT:
224 other_assets.push_back (shared_ptr<SMPTESubtitleAsset> (new SMPTESubtitleAsset (path)));
227 throw DCPReadError ("Unknown MXF essence type");
229 } else if (boost::filesystem::extension (path) == ".ttf") {
230 other_assets.push_back (shared_ptr<FontAsset> (new FontAsset (i->first, path)));
234 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
235 i->resolve_refs (other_assets);
240 DCP::resolve_refs (list<shared_ptr<Asset> > assets)
242 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
243 i->resolve_refs (assets);
248 DCP::equals (DCP const & other, EqualityOptions opt, NoteHandler note) const
250 list<shared_ptr<CPL> > a = cpls ();
251 list<shared_ptr<CPL> > b = other.cpls ();
253 if (a.size() != b.size()) {
254 note (DCP_ERROR, String::compose ("CPL counts differ: %1 vs %2", a.size(), b.size()));
260 BOOST_FOREACH (shared_ptr<CPL> i, a) {
261 list<shared_ptr<CPL> >::const_iterator j = b.begin ();
262 while (j != b.end() && !(*j)->equals (i, opt, note)) {
275 DCP::add (boost::shared_ptr<CPL> cpl)
277 _cpls.push_back (cpl);
281 DCP::encrypted () const
283 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
284 if (i->encrypted ()) {
293 DCP::add (DecryptedKDM const & kdm)
295 list<DecryptedKDMKey> keys = kdm.keys ();
297 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
298 BOOST_FOREACH (DecryptedKDMKey const & j, kdm.keys ()) {
299 if (j.cpl_id() == i->id()) {
306 /** @return full pathname of PKL file that was written */
307 boost::filesystem::path
308 DCP::write_pkl (string file, Standard standard, string pkl_uuid, XMLMetadata metadata, shared_ptr<const CertificateChain> signer) const
310 boost::filesystem::path p = _directory;
315 if (standard == INTEROP) {
316 pkl = doc.create_root_node("PackingList", pkl_interop_ns);
318 pkl = doc.create_root_node("PackingList", pkl_smpte_ns);
322 pkl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
325 pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
327 /* XXX: this is a bit of a hack */
328 DCP_ASSERT (cpls().size() > 0);
329 pkl->add_child("AnnotationText")->add_child_text (cpls().front()->annotation_text ());
331 pkl->add_child("IssueDate")->add_child_text (metadata.issue_date);
332 pkl->add_child("Issuer")->add_child_text (metadata.issuer);
333 pkl->add_child("Creator")->add_child_text (metadata.creator);
335 xmlpp::Element* asset_list = pkl->add_child("AssetList");
336 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
337 i->write_to_pkl (asset_list, _directory, standard);
341 signer->sign (pkl, standard);
344 doc.write_to_file (p.string (), "UTF-8");
348 /** Write the VOLINDEX file.
349 * @param standard DCP standard to use (INTEROP or SMPTE)
352 DCP::write_volindex (Standard standard) const
354 boost::filesystem::path p = _directory;
367 xmlpp::Element* root;
371 root = doc.create_root_node ("VolumeIndex", volindex_interop_ns);
374 root = doc.create_root_node ("VolumeIndex", volindex_smpte_ns);
380 root->add_child("Index")->add_child_text ("1");
381 doc.write_to_file (p.string (), "UTF-8");
385 DCP::write_assetmap (Standard standard, string pkl_uuid, boost::filesystem::path pkl_path, XMLMetadata metadata) const
387 boost::filesystem::path p = _directory;
401 xmlpp::Element* root;
405 root = doc.create_root_node ("AssetMap", assetmap_interop_ns);
408 root = doc.create_root_node ("AssetMap", assetmap_smpte_ns);
414 root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
415 root->add_child("AnnotationText")->add_child_text ("Created by " + metadata.creator);
419 root->add_child("VolumeCount")->add_child_text ("1");
420 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
421 root->add_child("Issuer")->add_child_text (metadata.issuer);
422 root->add_child("Creator")->add_child_text (metadata.creator);
425 root->add_child("Creator")->add_child_text (metadata.creator);
426 root->add_child("VolumeCount")->add_child_text ("1");
427 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
428 root->add_child("Issuer")->add_child_text (metadata.issuer);
434 xmlpp::Node* asset_list = root->add_child ("AssetList");
436 xmlpp::Node* asset = asset_list->add_child ("Asset");
437 asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
438 asset->add_child("PackingList")->add_child_text ("true");
439 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
440 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
441 chunk->add_child("Path")->add_child_text (pkl_path.filename().string());
442 chunk->add_child("VolumeIndex")->add_child_text ("1");
443 chunk->add_child("Offset")->add_child_text ("0");
444 chunk->add_child("Length")->add_child_text (raw_convert<string> (boost::filesystem::file_size (pkl_path)));
446 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
447 i->write_to_assetmap (asset_list, _directory);
450 /* This must not be the _formatted version otherwise signature digests will be wrong */
451 doc.write_to_file (p.string (), "UTF-8");
454 /** Write all the XML files for this DCP.
455 * @param standand INTEROP or SMPTE.
456 * @param metadata Metadata to use for PKL and asset map files.
457 * @param signer Signer to use, or 0.
462 XMLMetadata metadata,
463 shared_ptr<const CertificateChain> signer,
464 NameFormat name_format
467 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
468 NameFormat::Map values;
470 i->write_xml (_directory / (name_format.get(values, "_" + i->id() + ".xml")), standard, signer);
473 string const pkl_uuid = make_uuid ();
474 NameFormat::Map values;
476 boost::filesystem::path const pkl_path = write_pkl (name_format.get(values, "_" + pkl_uuid + ".xml"), standard, pkl_uuid, metadata, signer);
478 write_volindex (standard);
479 write_assetmap (standard, pkl_uuid, pkl_path, metadata);
482 list<shared_ptr<CPL> >
488 /** @return All assets (including CPLs) */
489 list<shared_ptr<Asset> >
492 list<shared_ptr<Asset> > assets;
493 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
494 assets.push_back (i);
495 BOOST_FOREACH (shared_ptr<const ReelAsset> j, i->reel_assets ()) {
496 shared_ptr<Asset> o = j->asset_ref().asset ();
497 assets.push_back (o);
498 /* More Interop special-casing */
499 shared_ptr<InteropSubtitleAsset> sub = dynamic_pointer_cast<InteropSubtitleAsset> (o);
501 sub->add_font_assets (assets);
509 /** Given a list of files that make up 1 or more DCPs, return the DCP directories */
510 vector<boost::filesystem::path>
511 DCP::directories_from_files (vector<boost::filesystem::path> files)
513 vector<boost::filesystem::path> d;
514 BOOST_FOREACH (boost::filesystem::path i, files) {
515 if (i.filename() == "ASSETMAP" || i.filename() == "ASSETMAP.xml") {
516 d.push_back (i.parent_path ());