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 "atmos_asset.h"
42 #include "picture_asset.h"
43 #include "interop_subtitle_asset.h"
44 #include "smpte_subtitle_asset.h"
45 #include "mono_picture_asset.h"
46 #include "stereo_picture_asset.h"
47 #include "reel_subtitle_asset.h"
50 #include "exceptions.h"
52 #include "certificate_chain.h"
53 #include "compose.hpp"
54 #include "decrypted_kdm.h"
55 #include "decrypted_kdm_key.h"
56 #include "dcp_assert.h"
57 #include "reel_asset.h"
58 #include "font_asset.h"
59 #include <asdcp/AS_DCP.h>
60 #include <xmlsec/xmldsig.h>
61 #include <xmlsec/app.h>
62 #include <libxml++/libxml++.h>
63 #include <boost/filesystem.hpp>
64 #include <boost/algorithm/string.hpp>
65 #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-VL-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) {
172 throw DCPReadError(String::compose("XML error in %1", path.string()), e.what());
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)));
226 case ASDCP::ESS_DCDATA_DOLBY_ATMOS:
227 other_assets.push_back (shared_ptr<AtmosAsset> (new AtmosAsset (path)));
230 throw DCPReadError (String::compose ("Unknown MXF essence type %1 in %2", int(type), path.string()));
232 } else if (boost::filesystem::extension (path) == ".ttf") {
233 other_assets.push_back (shared_ptr<FontAsset> (new FontAsset (i->first, path)));
237 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
238 i->resolve_refs (other_assets);
243 DCP::resolve_refs (list<shared_ptr<Asset> > assets)
245 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
246 i->resolve_refs (assets);
251 DCP::equals (DCP const & other, EqualityOptions opt, NoteHandler note) const
253 list<shared_ptr<CPL> > a = cpls ();
254 list<shared_ptr<CPL> > b = other.cpls ();
256 if (a.size() != b.size()) {
257 note (DCP_ERROR, String::compose ("CPL counts differ: %1 vs %2", a.size(), b.size()));
263 BOOST_FOREACH (shared_ptr<CPL> i, a) {
264 list<shared_ptr<CPL> >::const_iterator j = b.begin ();
265 while (j != b.end() && !(*j)->equals (i, opt, note)) {
278 DCP::add (boost::shared_ptr<CPL> cpl)
280 _cpls.push_back (cpl);
284 DCP::encrypted () const
286 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
287 if (i->encrypted ()) {
295 /** Add a KDM to decrypt this DCP. This method must be called after DCP::read()
296 * or the KDM you specify will be ignored.
297 * @param kdm KDM to use.
300 DCP::add (DecryptedKDM const & kdm)
302 list<DecryptedKDMKey> keys = kdm.keys ();
304 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
305 BOOST_FOREACH (DecryptedKDMKey const & j, kdm.keys ()) {
306 if (j.cpl_id() == i->id()) {
313 /** @return full pathname of PKL file that was written */
314 boost::filesystem::path
315 DCP::write_pkl (string file, Standard standard, string pkl_uuid, XMLMetadata metadata, shared_ptr<const CertificateChain> signer) const
317 boost::filesystem::path p = _directory;
322 if (standard == INTEROP) {
323 pkl = doc.create_root_node("PackingList", pkl_interop_ns);
325 pkl = doc.create_root_node("PackingList", pkl_smpte_ns);
328 pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
329 pkl->add_child("AnnotationText")->add_child_text (metadata.annotation_text);
330 pkl->add_child("IssueDate")->add_child_text (metadata.issue_date);
331 pkl->add_child("Issuer")->add_child_text (metadata.issuer);
332 pkl->add_child("Creator")->add_child_text (metadata.creator);
334 xmlpp::Element* asset_list = pkl->add_child("AssetList");
335 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
336 i->write_to_pkl (asset_list, _directory, standard);
340 signer->sign (pkl, standard);
343 doc.write_to_file (p.string (), "UTF-8");
347 /** Write the VOLINDEX file.
348 * @param standard DCP standard to use (INTEROP or SMPTE)
351 DCP::write_volindex (Standard standard) const
353 boost::filesystem::path p = _directory;
366 xmlpp::Element* root;
370 root = doc.create_root_node ("VolumeIndex", volindex_interop_ns);
373 root = doc.create_root_node ("VolumeIndex", volindex_smpte_ns);
379 root->add_child("Index")->add_child_text ("1");
380 doc.write_to_file (p.string (), "UTF-8");
384 DCP::write_assetmap (Standard standard, string pkl_uuid, boost::filesystem::path pkl_path, XMLMetadata metadata) const
386 boost::filesystem::path p = _directory;
400 xmlpp::Element* root;
404 root = doc.create_root_node ("AssetMap", assetmap_interop_ns);
407 root = doc.create_root_node ("AssetMap", assetmap_smpte_ns);
413 root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
414 root->add_child("AnnotationText")->add_child_text (metadata.annotation_text);
418 root->add_child("VolumeCount")->add_child_text ("1");
419 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
420 root->add_child("Issuer")->add_child_text (metadata.issuer);
421 root->add_child("Creator")->add_child_text (metadata.creator);
424 root->add_child("Creator")->add_child_text (metadata.creator);
425 root->add_child("VolumeCount")->add_child_text ("1");
426 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
427 root->add_child("Issuer")->add_child_text (metadata.issuer);
433 xmlpp::Node* asset_list = root->add_child ("AssetList");
435 xmlpp::Node* asset = asset_list->add_child ("Asset");
436 asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
437 asset->add_child("PackingList")->add_child_text ("true");
438 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
439 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
440 chunk->add_child("Path")->add_child_text (pkl_path.filename().string());
441 chunk->add_child("VolumeIndex")->add_child_text ("1");
442 chunk->add_child("Offset")->add_child_text ("0");
443 chunk->add_child("Length")->add_child_text (raw_convert<string> (boost::filesystem::file_size (pkl_path)));
445 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
446 i->write_to_assetmap (asset_list, _directory);
449 /* This must not be the _formatted version otherwise signature digests will be wrong */
450 doc.write_to_file (p.string (), "UTF-8");
453 /** Write all the XML files for this DCP.
454 * @param standand INTEROP or SMPTE.
455 * @param metadata Metadata to use for PKL and asset map files.
456 * @param signer Signer to use, or 0.
461 XMLMetadata metadata,
462 shared_ptr<const CertificateChain> signer,
463 NameFormat name_format
466 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
467 NameFormat::Map values;
469 i->write_xml (_directory / (name_format.get(values, "_" + i->id() + ".xml")), standard, signer);
472 string const pkl_uuid = make_uuid ();
473 NameFormat::Map values;
475 boost::filesystem::path const pkl_path = write_pkl (name_format.get(values, "_" + pkl_uuid + ".xml"), standard, pkl_uuid, metadata, signer);
477 write_volindex (standard);
478 write_assetmap (standard, pkl_uuid, pkl_path, metadata);
481 list<shared_ptr<CPL> >
487 /** @param ignore_unresolved true to silently ignore unresolved assets, otherwise
488 * an exception is thrown if they are found.
489 * @return All assets (including CPLs).
491 list<shared_ptr<Asset> >
492 DCP::assets (bool ignore_unresolved) const
494 list<shared_ptr<Asset> > assets;
495 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
496 assets.push_back (i);
497 BOOST_FOREACH (shared_ptr<const ReelAsset> j, i->reel_assets ()) {
498 if (ignore_unresolved && !j->asset_ref().resolved()) {
501 shared_ptr<Asset> o = j->asset_ref().asset ();
502 assets.push_back (o);
503 /* More Interop special-casing */
504 shared_ptr<InteropSubtitleAsset> sub = dynamic_pointer_cast<InteropSubtitleAsset> (o);
506 sub->add_font_assets (assets);
514 /** Given a list of files that make up 1 or more DCPs, return the DCP directories */
515 vector<boost::filesystem::path>
516 DCP::directories_from_files (vector<boost::filesystem::path> files)
518 vector<boost::filesystem::path> d;
519 BOOST_FOREACH (boost::filesystem::path i, files) {
520 if (i.filename() == "ASSETMAP" || i.filename() == "ASSETMAP.xml") {
521 d.push_back (i.parent_path ());