2 Copyright (C) 2012-2013 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 #include <libxml/parser.h>
23 #include "parse/cpl.h"
25 #include "mono_picture_asset.h"
26 #include "stereo_picture_asset.h"
27 #include "sound_asset.h"
28 #include "subtitle_asset.h"
29 #include "parse/asset_map.h"
33 #include "exceptions.h"
34 #include "compose.hpp"
37 using std::stringstream;
43 using boost::shared_ptr;
44 using boost::lexical_cast;
45 using boost::optional;
46 using namespace libdcp;
48 CPL::CPL (boost::filesystem::path directory, string name, ContentKind content_kind, int length, int frames_per_second)
49 : _directory (directory)
51 , _content_kind (content_kind)
53 , _fps (frames_per_second)
58 /** Construct a CPL object from a XML file.
59 * @param directory The directory containing this CPL's DCP.
60 * @param file The CPL XML filename.
61 * @param asset_maps AssetMaps to look for assets in.
62 * @param require_mxfs true to throw an exception if a required MXF file does not exist.
64 CPL::CPL (boost::filesystem::path directory, string file, list<PathAssetMap> asset_maps, bool require_mxfs)
65 : _directory (directory)
66 , _content_kind (FEATURE)
71 shared_ptr<parse::CPL> cpl;
73 cpl.reset (new parse::CPL (file));
74 } catch (FileError& e) {
75 boost::throw_exception (FileError ("could not load CPL file", file));
78 /* Now cherry-pick the required bits into our own data structure */
80 _name = cpl->annotation_text;
81 _content_kind = cpl->content_kind;
83 /* Trim urn:uuid: off the front */
84 _id = cpl->id.substr (9);
86 for (list<shared_ptr<parse::Reel> >::iterator i = cpl->reels.begin(); i != cpl->reels.end(); ++i) {
88 shared_ptr<parse::Picture> p;
90 if ((*i)->asset_list->main_picture) {
91 p = (*i)->asset_list->main_picture;
93 p = (*i)->asset_list->main_stereoscopic_picture;
96 _fps = p->edit_rate.numerator;
97 _length += p->duration;
99 shared_ptr<PictureAsset> picture;
100 shared_ptr<SoundAsset> sound;
101 shared_ptr<SubtitleAsset> subtitle;
103 /* Some rather twisted logic to decide if we are 3D or not;
104 some DCPs give a MainStereoscopicPicture to indicate 3D, others
105 just have a FrameRate twice the EditRate and apparently
106 expect you to divine the fact that they are hence 3D.
109 if (!(*i)->asset_list->main_stereoscopic_picture && p->edit_rate == p->frame_rate) {
112 pair<string, shared_ptr<const parse::AssetMapAsset> > asset = asset_from_id (asset_maps, p->id);
114 picture.reset (new MonoPictureAsset (asset.first, asset.second->chunks.front()->path));
117 picture->set_edit_rate (_fps);
118 picture->set_entry_point (p->entry_point);
119 picture->set_duration (p->duration);
120 if (p->key_id.length() > 9) {
122 picture->set_key_id (p->key_id.substr (9));
124 } catch (MXFFileError) {
132 pair<string, shared_ptr<const parse::AssetMapAsset> > asset = asset_from_id (asset_maps, p->id);
134 picture.reset (new StereoPictureAsset (asset.first, asset.second->chunks.front()->path));
137 picture->set_edit_rate (_fps);
138 picture->set_entry_point (p->entry_point);
139 picture->set_duration (p->duration);
140 if (p->key_id.length() > 9) {
142 picture->set_key_id (p->key_id.substr (9));
145 } catch (MXFFileError) {
153 if ((*i)->asset_list->main_sound) {
156 pair<string, shared_ptr<const parse::AssetMapAsset> > asset = asset_from_id (asset_maps, (*i)->asset_list->main_sound->id);
158 sound.reset (new SoundAsset (asset.first, asset.second->chunks.front()->path));
159 shared_ptr<parse::MainSound> s = (*i)->asset_list->main_sound;
162 sound->set_entry_point (s->entry_point);
163 sound->set_duration (s->duration);
164 if (s->key_id.length() > 9) {
166 sound->set_key_id (s->key_id.substr (9));
168 } catch (MXFFileError) {
175 if ((*i)->asset_list->main_subtitle) {
177 pair<string, shared_ptr<const parse::AssetMapAsset> > asset = asset_from_id (asset_maps, (*i)->asset_list->main_subtitle->id);
179 subtitle.reset (new SubtitleAsset (asset.first, asset.second->chunks.front()->path));
181 subtitle->set_entry_point ((*i)->asset_list->main_subtitle->entry_point);
182 subtitle->set_duration ((*i)->asset_list->main_subtitle->duration);
185 _reels.push_back (shared_ptr<Reel> (new Reel (picture, sound, subtitle)));
190 CPL::add_reel (shared_ptr<Reel> reel)
192 _reels.push_back (reel);
196 CPL::write_xml (bool interop, XMLMetadata const & metadata, shared_ptr<const Signer> signer) const
198 boost::filesystem::path p;
201 s << _id << "_cpl.xml";
205 xmlpp::Element* root;
207 root = doc.create_root_node ("CompositionPlaylist", "http://www.digicine.com/PROTO-ASDCP-CPL-20040511#");
209 root = doc.create_root_node ("CompositionPlaylist", "http://www.smpte-ra.org/schemas/429-7/2006/CPL");
213 root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
216 root->add_child("Id")->add_child_text ("urn:uuid:" + _id);
217 root->add_child("AnnotationText")->add_child_text (_name);
218 root->add_child("IssueDate")->add_child_text (metadata.issue_date);
219 root->add_child("Issuer")->add_child_text (metadata.issuer);
220 root->add_child("Creator")->add_child_text (metadata.creator);
221 root->add_child("ContentTitleText")->add_child_text (_name);
222 root->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
224 xmlpp::Node* cv = root->add_child ("ContentVersion");
225 cv->add_child ("Id")->add_child_text ("urn:uri:" + _id + "_" + metadata.issue_date);
226 cv->add_child ("LabelText")->add_child_text (_id + "_" + metadata.issue_date);
228 root->add_child("RatingList");
230 xmlpp::Element* reel_list = root->add_child ("ReelList");
232 for (list<shared_ptr<Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
233 (*i)->write_to_cpl (reel_list, interop);
237 signer->sign (root, interop);
240 doc.write_to_file_formatted (p.string (), "UTF-8");
242 _digest = make_digest (p.string (), 0);
243 _length = boost::filesystem::file_size (p.string ());
247 CPL::write_to_pkl (xmlpp::Node* node) const
249 xmlpp::Node* asset = node->add_child ("Asset");
250 asset->add_child("Id")->add_child_text ("urn:uuid:" + _id);
251 asset->add_child("Hash")->add_child_text (_digest);
252 asset->add_child("Size")->add_child_text (lexical_cast<string> (_length));
253 asset->add_child("Type")->add_child_text ("text/xml");
256 list<shared_ptr<const Asset> >
259 list<shared_ptr<const Asset> > a;
260 for (list<shared_ptr<Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
261 if ((*i)->main_picture ()) {
262 a.push_back ((*i)->main_picture ());
264 if ((*i)->main_sound ()) {
265 a.push_back ((*i)->main_sound ());
267 if ((*i)->main_subtitle ()) {
268 a.push_back ((*i)->main_subtitle ());
276 CPL::write_to_assetmap (xmlpp::Node* node) const
278 xmlpp::Node* asset = node->add_child ("Asset");
279 asset->add_child("Id")->add_child_text ("urn:uuid:" + _id);
280 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
281 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
282 chunk->add_child("Path")->add_child_text (_id + "_cpl.xml");
283 chunk->add_child("VolumeIndex")->add_child_text ("1");
284 chunk->add_child("Offset")->add_child_text("0");
285 chunk->add_child("Length")->add_child_text(lexical_cast<string> (_length));
291 CPL::equals (CPL const & other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
293 if (_name != other._name && !opt.cpl_names_can_differ) {
295 s << "names differ: " << _name << " vs " << other._name << "\n";
296 note (ERROR, s.str ());
300 if (_content_kind != other._content_kind) {
301 note (ERROR, "content kinds differ");
305 if (_fps != other._fps) {
306 note (ERROR, String::compose ("frames per second differ (%1 vs %2)", _fps, other._fps));
310 if (_length != other._length) {
312 note (ERROR, String::compose ("lengths differ (%1 vs %2)", _length, other._length));
315 if (_reels.size() != other._reels.size()) {
316 note (ERROR, String::compose ("reel counts differ (%1 vs %2)", _reels.size(), other._reels.size()));
320 list<shared_ptr<Reel> >::const_iterator a = _reels.begin ();
321 list<shared_ptr<Reel> >::const_iterator b = other._reels.begin ();
323 while (a != _reels.end ()) {
324 if (!(*a)->equals (*b, opt, note)) {
334 /** @return true if we have any encrypted content */
336 CPL::encrypted () const
338 for (list<shared_ptr<Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
339 if ((*i)->encrypted ()) {
348 CPL::add_kdm (KDM const & kdm)
350 for (list<shared_ptr<Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
355 pair<string, shared_ptr<const parse::AssetMapAsset> >
356 CPL::asset_from_id (list<PathAssetMap> asset_maps, string id) const
358 for (list<PathAssetMap>::const_iterator i = asset_maps.begin(); i != asset_maps.end(); ++i) {
359 shared_ptr<parse::AssetMapAsset> a = i->second->asset_from_id (id);
361 return make_pair (i->first, a);
365 return make_pair ("", shared_ptr<const parse::AssetMapAsset> ());
369 CPL::set_mxf_keys (Key key)
371 for (list<shared_ptr<Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
372 (*i)->set_mxf_keys (key);