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"
60 #include "asset_factory.h"
61 #include <asdcp/AS_DCP.h>
62 #include <xmlsec/xmldsig.h>
63 #include <xmlsec/app.h>
64 #include <libxml++/libxml++.h>
65 #include <boost/filesystem.hpp>
66 #include <boost/algorithm/string.hpp>
67 #include <boost/foreach.hpp>
77 using boost::shared_ptr;
78 using boost::dynamic_pointer_cast;
79 using boost::optional;
80 using boost::algorithm::starts_with;
83 static string const assetmap_interop_ns = "http://www.digicine.com/PROTO-ASDCP-AM-20040311#";
84 static string const assetmap_smpte_ns = "http://www.smpte-ra.org/schemas/429-9/2007/AM";
85 static string const volindex_interop_ns = "http://www.digicine.com/PROTO-ASDCP-VL-20040311#";
86 static string const volindex_smpte_ns = "http://www.smpte-ra.org/schemas/429-9/2007/AM";
88 DCP::DCP (boost::filesystem::path directory)
89 : _directory (directory)
91 if (!boost::filesystem::exists (directory)) {
92 boost::filesystem::create_directories (directory);
95 _directory = boost::filesystem::canonical (_directory);
98 /** Call this instead of throwing an exception if the error can be tolerated */
99 template<class T> void
100 survivable_error (bool keep_going, dcp::DCP::ReadErrors* errors, T const & e)
104 errors->push_back (shared_ptr<T> (new T (e)));
112 DCP::read (bool keep_going, ReadErrors* errors, bool ignore_incorrect_picture_mxf_type)
114 /* Read the ASSETMAP and PKL */
116 boost::filesystem::path asset_map_file;
117 if (boost::filesystem::exists (_directory / "ASSETMAP")) {
118 asset_map_file = _directory / "ASSETMAP";
119 } else if (boost::filesystem::exists (_directory / "ASSETMAP.xml")) {
120 asset_map_file = _directory / "ASSETMAP.xml";
122 boost::throw_exception (DCPReadError (String::compose ("could not find AssetMap file in `%1'", _directory.string())));
125 cxml::Document asset_map ("AssetMap");
127 asset_map.read_file (asset_map_file);
128 if (asset_map.namespace_uri() == assetmap_interop_ns) {
130 } else if (asset_map.namespace_uri() == assetmap_smpte_ns) {
133 boost::throw_exception (XMLError ("Unrecognised Assetmap namespace " + asset_map.namespace_uri()));
136 list<shared_ptr<cxml::Node> > asset_nodes = asset_map.node_child("AssetList")->node_children ("Asset");
137 map<string, boost::filesystem::path> paths;
138 list<boost::filesystem::path> pkl_paths;
139 BOOST_FOREACH (shared_ptr<cxml::Node> i, asset_nodes) {
140 if (i->node_child("ChunkList")->node_children("Chunk").size() != 1) {
141 boost::throw_exception (XMLError ("unsupported asset chunk count"));
143 string p = i->node_child("ChunkList")->node_child("Chunk")->string_child ("Path");
144 if (starts_with (p, "file://")) {
147 switch (*_standard) {
149 if (i->optional_node_child("PackingList")) {
150 pkl_paths.push_back (p);
152 paths.insert (make_pair (remove_urn_uuid (i->string_child ("Id")), p));
157 optional<string> pkl_bool = i->optional_string_child("PackingList");
158 if (pkl_bool && *pkl_bool == "true") {
159 pkl_paths.push_back (p);
161 paths.insert (make_pair (remove_urn_uuid (i->string_child ("Id")), p));
168 if (pkl_paths.empty()) {
169 boost::throw_exception (XMLError ("No packing lists found in asset map"));
172 BOOST_FOREACH (boost::filesystem::path i, pkl_paths) {
173 _pkls.push_back (shared_ptr<PKL>(new PKL(_directory / i)));
177 paths - files in the DCP that are not PKLs.
178 _pkls - PKL objects for each PKL.
180 Read all the assets from the asset map.
183 /* Make a list of non-CPL/PKL assets so that we can resolve the references
186 list<shared_ptr<Asset> > other_assets;
188 for (map<string, boost::filesystem::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
189 boost::filesystem::path path = _directory / i->second;
191 if (i->second.empty()) {
192 /* I can't see how this is valid, but it's
193 been seen in the wild with a DCP that
194 claims to come from ClipsterDCI 5.10.0.5.
196 survivable_error (keep_going, errors, EmptyAssetPathError(i->first));
199 if (i->second.empty() || !boost::filesystem::exists(path)) {
200 survivable_error (keep_going, errors, MissingAssetError (path));
204 /* Find the <Type> for this asset from the PKL that contains the asset */
205 optional<string> pkl_type;
206 BOOST_FOREACH (shared_ptr<PKL> j, _pkls) {
207 pkl_type = j->type(i->first);
213 DCP_ASSERT (pkl_type);
215 if (*pkl_type == CPL::static_pkl_type(*_standard) || *pkl_type == InteropSubtitleAsset::static_pkl_type(*_standard)) {
216 xmlpp::DomParser* p = new xmlpp::DomParser;
218 p->parse_file (path.string());
219 } catch (std::exception& e) {
221 throw DCPReadError(String::compose("XML error in %1", path.string()), e.what());
224 string const root = p->get_document()->get_root_node()->get_name ();
227 if (root == "CompositionPlaylist") {
228 shared_ptr<CPL> cpl (new CPL (path));
229 if (_standard && cpl->standard() && cpl->standard().get() != _standard.get()) {
230 survivable_error (keep_going, errors, MismatchedStandardError ());
232 _cpls.push_back (cpl);
233 } else if (root == "DCSubtitle") {
234 if (_standard && _standard.get() == SMPTE) {
235 survivable_error (keep_going, errors, MismatchedStandardError ());
237 other_assets.push_back (shared_ptr<InteropSubtitleAsset> (new InteropSubtitleAsset (path)));
240 *pkl_type == PictureAsset::static_pkl_type(*_standard) ||
241 *pkl_type == SoundAsset::static_pkl_type(*_standard) ||
242 *pkl_type == AtmosAsset::static_pkl_type(*_standard) ||
243 *pkl_type == SMPTESubtitleAsset::static_pkl_type(*_standard)
246 other_assets.push_back (asset_factory(path, ignore_incorrect_picture_mxf_type));
247 } else if (*pkl_type == FontAsset::static_pkl_type(*_standard)) {
248 other_assets.push_back (shared_ptr<FontAsset> (new FontAsset (i->first, path)));
249 } else if (*pkl_type == "image/png") {
250 /* It's an Interop PNG subtitle; let it go */
252 throw DCPReadError (String::compose("Unknown asset type %1 in PKL", *pkl_type));
256 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
257 i->resolve_refs (other_assets);
262 DCP::resolve_refs (list<shared_ptr<Asset> > assets)
264 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
265 i->resolve_refs (assets);
270 DCP::equals (DCP const & other, EqualityOptions opt, NoteHandler note) const
272 list<shared_ptr<CPL> > a = cpls ();
273 list<shared_ptr<CPL> > b = other.cpls ();
275 if (a.size() != b.size()) {
276 note (DCP_ERROR, String::compose ("CPL counts differ: %1 vs %2", a.size(), b.size()));
282 BOOST_FOREACH (shared_ptr<CPL> i, a) {
283 list<shared_ptr<CPL> >::const_iterator j = b.begin ();
284 while (j != b.end() && !(*j)->equals (i, opt, note)) {
297 DCP::add (boost::shared_ptr<CPL> cpl)
299 _cpls.push_back (cpl);
303 DCP::encrypted () const
305 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
306 if (i->encrypted ()) {
314 /** Add a KDM to decrypt this DCP. This method must be called after DCP::read()
315 * or the KDM you specify will be ignored.
316 * @param kdm KDM to use.
319 DCP::add (DecryptedKDM const & kdm)
321 list<DecryptedKDMKey> keys = kdm.keys ();
323 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
324 BOOST_FOREACH (DecryptedKDMKey const & j, kdm.keys ()) {
325 if (j.cpl_id() == i->id()) {
332 /** Write the VOLINDEX file.
333 * @param standard DCP standard to use (INTEROP or SMPTE)
336 DCP::write_volindex (Standard standard) const
338 boost::filesystem::path p = _directory;
351 xmlpp::Element* root;
355 root = doc.create_root_node ("VolumeIndex", volindex_interop_ns);
358 root = doc.create_root_node ("VolumeIndex", volindex_smpte_ns);
364 root->add_child("Index")->add_child_text ("1");
365 doc.write_to_file_formatted (p.string (), "UTF-8");
369 DCP::write_assetmap (Standard standard, string pkl_uuid, boost::filesystem::path pkl_path, XMLMetadata metadata) const
371 boost::filesystem::path p = _directory;
385 xmlpp::Element* root;
389 root = doc.create_root_node ("AssetMap", assetmap_interop_ns);
392 root = doc.create_root_node ("AssetMap", assetmap_smpte_ns);
398 root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
399 root->add_child("AnnotationText")->add_child_text (metadata.annotation_text);
403 root->add_child("VolumeCount")->add_child_text ("1");
404 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
405 root->add_child("Issuer")->add_child_text (metadata.issuer);
406 root->add_child("Creator")->add_child_text (metadata.creator);
409 root->add_child("Creator")->add_child_text (metadata.creator);
410 root->add_child("VolumeCount")->add_child_text ("1");
411 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
412 root->add_child("Issuer")->add_child_text (metadata.issuer);
418 xmlpp::Node* asset_list = root->add_child ("AssetList");
420 xmlpp::Node* asset = asset_list->add_child ("Asset");
421 asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
422 asset->add_child("PackingList")->add_child_text ("true");
423 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
424 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
425 chunk->add_child("Path")->add_child_text (pkl_path.filename().string());
426 chunk->add_child("VolumeIndex")->add_child_text ("1");
427 chunk->add_child("Offset")->add_child_text ("0");
428 chunk->add_child("Length")->add_child_text (raw_convert<string> (boost::filesystem::file_size (pkl_path)));
430 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
431 i->write_to_assetmap (asset_list, _directory);
434 doc.write_to_file_formatted (p.string (), "UTF-8");
437 /** Write all the XML files for this DCP.
438 * @param standand INTEROP or SMPTE.
439 * @param metadata Metadata to use for PKL and asset map files.
440 * @param signer Signer to use, or 0.
445 XMLMetadata metadata,
446 shared_ptr<const CertificateChain> signer,
447 NameFormat name_format
450 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
451 NameFormat::Map values;
453 i->write_xml (_directory / (name_format.get(values, "_" + i->id() + ".xml")), standard, signer);
459 pkl.reset (new PKL (standard, metadata.annotation_text, metadata.issue_date, metadata.issuer, metadata.creator));
460 _pkls.push_back (pkl);
461 BOOST_FOREACH (shared_ptr<Asset> i, assets ()) {
462 i->add_to_pkl (pkl, _directory);
465 pkl = _pkls.front ();
468 NameFormat::Map values;
470 boost::filesystem::path pkl_path = _directory / name_format.get(values, "_" + pkl->id() + ".xml");
471 pkl->write (pkl_path, signer);
473 write_volindex (standard);
474 write_assetmap (standard, pkl->id(), pkl_path, metadata);
477 list<shared_ptr<CPL> >
483 /** @param ignore_unresolved true to silently ignore unresolved assets, otherwise
484 * an exception is thrown if they are found.
485 * @return All assets (including CPLs).
487 list<shared_ptr<Asset> >
488 DCP::assets (bool ignore_unresolved) const
490 list<shared_ptr<Asset> > assets;
491 BOOST_FOREACH (shared_ptr<CPL> i, cpls ()) {
492 assets.push_back (i);
493 BOOST_FOREACH (shared_ptr<const ReelMXF> j, i->reel_mxfs()) {
494 if (ignore_unresolved && !j->asset_ref().resolved()) {
497 shared_ptr<Asset> o = j->asset_ref().asset ();
498 assets.push_back (o);
499 /* More Interop special-casing */
500 shared_ptr<InteropSubtitleAsset> sub = dynamic_pointer_cast<InteropSubtitleAsset> (o);
502 sub->add_font_assets (assets);
510 /** Given a list of files that make up 1 or more DCPs, return the DCP directories */
511 vector<boost::filesystem::path>
512 DCP::directories_from_files (vector<boost::filesystem::path> files)
514 vector<boost::filesystem::path> d;
515 BOOST_FOREACH (boost::filesystem::path i, files) {
516 if (i.filename() == "ASSETMAP" || i.filename() == "ASSETMAP.xml") {
517 d.push_back (i.parent_path ());