src/lib/dcp_content.cc

   1 /*
   2     Copyright (C) 2014-2020 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic 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.
  10
  11     DCP-o-matic 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.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "atmos_content.h"
  22 #include "dcp_content.h"
  23 #include "video_content.h"
  24 #include "audio_content.h"
  25 #include "dcp_examiner.h"
  26 #include "job.h"
  27 #include "film.h"
  28 #include "config.h"
  29 #include "overlaps.h"
  30 #include "compose.hpp"
  31 #include "dcp_decoder.h"
  32 #include "log.h"
  33 #include "dcpomatic_log.h"
  34 #include "text_content.h"
  35 #include <dcp/dcp.h>
  36 #include <dcp/raw_convert.h>
  37 #include <dcp/exceptions.h>
  38 #include <dcp/reel_picture_asset.h>
  39 #include <dcp/reel.h>
  40 #include <libxml++/libxml++.h>
  41 #include <boost/foreach.hpp>
  42 #include <iterator>
  43 #include <iostream>
  44
  45 #include "i18n.h"
  46
  47 using std::string;
  48 using std::cout;
  49 using std::distance;
  50 using std::pair;
  51 using std::vector;
  52 using std::list;
  53 using std::map;
  54 using boost::shared_ptr;
  55 using boost::scoped_ptr;
  56 using boost::optional;
  57 using boost::function;
  58 using boost::dynamic_pointer_cast;
  59 using dcp::raw_convert;
  60 using namespace dcpomatic;
  61
  62 int const DCPContentProperty::NEEDS_ASSETS       = 600;
  63 int const DCPContentProperty::NEEDS_KDM          = 601;
  64 int const DCPContentProperty::REFERENCE_VIDEO    = 602;
  65 int const DCPContentProperty::REFERENCE_AUDIO    = 603;
  66 int const DCPContentProperty::REFERENCE_TEXT     = 604;
  67 int const DCPContentProperty::NAME               = 605;
  68 int const DCPContentProperty::TEXTS              = 606;
  69 int const DCPContentProperty::CPL                = 607;
  70
  71 DCPContent::DCPContent (boost::filesystem::path p)
  72         : _encrypted (false)
  73         , _needs_assets (false)
  74         , _kdm_valid (false)
  75         , _reference_video (false)
  76         , _reference_audio (false)
  77         , _three_d (false)
  78 {
  79         LOG_GENERAL ("Creating DCP content from %1", p.string());
  80
  81         read_directory (p);
  82         set_default_colour_conversion ();
  83
  84         for (int i = 0; i < TEXT_COUNT; ++i) {
  85                 _reference_text[i] = false;
  86         }
  87 }
  88
  89 DCPContent::DCPContent (cxml::ConstNodePtr node, int version)
  90         : Content (node)
  91 {
  92         video = VideoContent::from_xml (this, node, version);
  93         audio = AudioContent::from_xml (this, node, version);
  94         text = TextContent::from_xml (this, node, version);
  95         atmos = AtmosContent::from_xml (this, node);
  96
  97         for (int i = 0; i < TEXT_COUNT; ++i) {
  98                 _reference_text[i] = false;
  99         }
 100
 101         if (video && audio) {
 102                 audio->set_stream (
 103                         AudioStreamPtr (
 104                                 new AudioStream (
 105                                         node->number_child<int> ("AudioFrameRate"),
 106                                         /* AudioLength was not present in some old metadata versions */
 107                                         node->optional_number_child<Frame>("AudioLength").get_value_or (
 108                                                 video->length() * node->number_child<int>("AudioFrameRate") / video_frame_rate().get()
 109                                                 ),
 110                                         AudioMapping (node->node_child ("AudioMapping"), version)
 111                                         )
 112                                 )
 113                         );
 114         }
 115
 116         _name = node->string_child ("Name");
 117         _encrypted = node->bool_child ("Encrypted");
 118         _needs_assets = node->optional_bool_child("NeedsAssets").get_value_or (false);
 119         if (node->optional_node_child ("KDM")) {
 120                 _kdm = dcp::EncryptedKDM (node->string_child ("KDM"));
 121         }
 122         _kdm_valid = node->bool_child ("KDMValid");
 123         _reference_video = node->optional_bool_child ("ReferenceVideo").get_value_or (false);
 124         _reference_audio = node->optional_bool_child ("ReferenceAudio").get_value_or (false);
 125         if (version >= 37) {
 126                 _reference_text[TEXT_OPEN_SUBTITLE] = node->optional_bool_child("ReferenceOpenSubtitle").get_value_or(false);
 127                 _reference_text[TEXT_CLOSED_CAPTION] = node->optional_bool_child("ReferenceClosedCaption").get_value_or(false);
 128         } else {
 129                 _reference_text[TEXT_OPEN_SUBTITLE] = node->optional_bool_child("ReferenceSubtitle").get_value_or(false);
 130                 _reference_text[TEXT_CLOSED_CAPTION] = false;
 131         }
 132         if (node->optional_string_child("Standard")) {
 133                 string const s = node->optional_string_child("Standard").get();
 134                 if (s == "Interop") {
 135                         _standard = dcp::INTEROP;
 136                 } else if (s == "SMPTE") {
 137                         _standard = dcp::SMPTE;
 138                 } else {
 139                         DCPOMATIC_ASSERT (false);
 140                 }
 141         }
 142         _three_d = node->optional_bool_child("ThreeD").get_value_or (false);
 143
 144         optional<string> ck = node->optional_string_child("ContentKind");
 145         if (ck) {
 146                 _content_kind = dcp::content_kind_from_string (*ck);
 147         }
 148         _cpl = node->optional_string_child("CPL");
 149         BOOST_FOREACH (cxml::ConstNodePtr i, node->node_children("ReelLength")) {
 150                 _reel_lengths.push_back (raw_convert<int64_t> (i->content ()));
 151         }
 152
 153         BOOST_FOREACH (cxml::ConstNodePtr i, node->node_children("Marker")) {
 154                 _markers[dcp::marker_from_string(i->string_attribute("type"))] = ContentTime(raw_convert<int64_t>(i->content()));
 155         }
 156
 157         BOOST_FOREACH (cxml::ConstNodePtr i, node->node_children("Rating")) {
 158                 _ratings.push_back (dcp::Rating(i));
 159         }
 160
 161         _content_version = node->optional_string_child("ContentVersion").get_value_or("");
 162 }
 163
 164 void
 165 DCPContent::read_directory (boost::filesystem::path p)
 166 {
 167         read_sub_directory (p);
 168
 169         bool have_assetmap = false;
 170         BOOST_FOREACH (boost::filesystem::path i, paths()) {
 171                 if (i.filename() == "ASSETMAP" || i.filename() == "ASSETMAP.xml") {
 172                         have_assetmap = true;
 173                 }
 174         }
 175
 176         if (!have_assetmap) {
 177                 throw DCPError ("No ASSETMAP or ASSETMAP.xml file found: is this a DCP?");
 178         }
 179 }
 180
 181 void
 182 DCPContent::read_sub_directory (boost::filesystem::path p)
 183 {
 184         LOG_GENERAL ("DCPContent::read_sub_directory reads %1", p.string());
 185         for (boost::filesystem::directory_iterator i(p); i != boost::filesystem::directory_iterator(); ++i) {
 186                 if (boost::filesystem::is_regular_file (i->path())) {
 187                         LOG_GENERAL ("Inside there's regular file %1", i->path().string());
 188                         add_path (i->path());
 189                 } else if (boost::filesystem::is_directory (i->path ())) {
 190                         LOG_GENERAL ("Inside there's directory %1", i->path().string());
 191                         read_sub_directory (i->path());
 192                 }
 193         }
 194 }
 195
 196 /** @param film Film, or 0 */
 197 void
 198 DCPContent::examine (shared_ptr<const Film> film, shared_ptr<Job> job)
 199 {
 200         bool const needed_assets = needs_assets ();
 201         bool const needed_kdm = needs_kdm ();
 202         string const old_name = name ();
 203         int const old_texts = text.size ();
 204
 205         ChangeSignaller<Content> cc_texts (this, DCPContentProperty::TEXTS);
 206         ChangeSignaller<Content> cc_assets (this, DCPContentProperty::NEEDS_ASSETS);
 207         ChangeSignaller<Content> cc_kdm (this, DCPContentProperty::NEEDS_KDM);
 208         ChangeSignaller<Content> cc_name (this, DCPContentProperty::NAME);
 209
 210         if (job) {
 211                 job->set_progress_unknown ();
 212         }
 213         Content::examine (film, job);
 214
 215         shared_ptr<DCPExaminer> examiner (new DCPExaminer(shared_from_this(), film ? film->tolerant() : true));
 216
 217         if (examiner->has_video()) {
 218                 {
 219                         boost::mutex::scoped_lock lm (_mutex);
 220                         video.reset (new VideoContent (this));
 221                 }
 222                 video->take_from_examiner (examiner);
 223                 set_default_colour_conversion ();
 224         }
 225
 226         if (examiner->has_audio()) {
 227                 {
 228                         boost::mutex::scoped_lock lm (_mutex);
 229                         audio.reset (new AudioContent (this));
 230                 }
 231                 AudioStreamPtr as (new AudioStream (examiner->audio_frame_rate(), examiner->audio_length(), examiner->audio_channels()));
 232                 audio->set_stream (as);
 233                 AudioMapping m = as->mapping ();
 234                 m.make_default (film ? film->audio_processor() : 0);
 235                 as->set_mapping (m);
 236         }
 237
 238         if (examiner->has_atmos()) {
 239                 {
 240                         boost::mutex::scoped_lock lm (_mutex);
 241                         atmos.reset (new AtmosContent(this));
 242                 }
 243                 atmos->set_length (examiner->atmos_length());
 244                 atmos->set_edit_rate (examiner->atmos_edit_rate());
 245         }
 246
 247         int texts = 0;
 248         {
 249                 boost::mutex::scoped_lock lm (_mutex);
 250                 _name = examiner->name ();
 251                 for (int i = 0; i < TEXT_COUNT; ++i) {
 252                         for (int j = 0; j < examiner->text_count(static_cast<TextType>(i)); ++j) {
 253                                 text.push_back (shared_ptr<TextContent>(new TextContent(this, static_cast<TextType>(i), static_cast<TextType>(i))));
 254                         }
 255                 }
 256                 texts = text.size ();
 257                 _encrypted = examiner->encrypted ();
 258                 _needs_assets = examiner->needs_assets ();
 259                 _kdm_valid = examiner->kdm_valid ();
 260                 _standard = examiner->standard ();
 261                 _three_d = examiner->three_d ();
 262                 _content_kind = examiner->content_kind ();
 263                 _cpl = examiner->cpl ();
 264                 _reel_lengths = examiner->reel_lengths ();
 265                 map<dcp::Marker, dcp::Time> markers = examiner->markers();
 266                 for (map<dcp::Marker, dcp::Time>::const_iterator i = markers.begin(); i != markers.end(); ++i) {
 267                         _markers[i->first] = ContentTime(i->second.as_editable_units(DCPTime::HZ));
 268                 }
 269                 _ratings = examiner->ratings ();
 270                 _content_version = examiner->content_version ();
 271         }
 272
 273         if (old_texts == texts) {
 274                 cc_texts.abort ();
 275         }
 276
 277         if (needed_assets == needs_assets()) {
 278                 cc_assets.abort ();
 279         }
 280
 281         if (needed_kdm == needs_kdm()) {
 282                 cc_kdm.abort ();
 283         }
 284
 285         if (old_name == name()) {
 286                 cc_name.abort ();
 287         }
 288
 289         if (video) {
 290                 video->set_frame_type (_three_d ? VIDEO_FRAME_TYPE_3D : VIDEO_FRAME_TYPE_2D);
 291         }
 292 }
 293
 294 string
 295 DCPContent::summary () const
 296 {
 297         boost::mutex::scoped_lock lm (_mutex);
 298         return String::compose (_("%1 [DCP]"), _name);
 299 }
 300
 301 string
 302 DCPContent::technical_summary () const
 303 {
 304         string s = Content::technical_summary() + " - ";
 305         if (video) {
 306                 s += video->technical_summary() + " - ";
 307         }
 308         if (audio) {
 309                 s += audio->technical_summary() + " - ";
 310         }
 311         return s;
 312 }
 313
 314 void
 315 DCPContent::as_xml (xmlpp::Node* node, bool with_paths) const
 316 {
 317         node->add_child("Type")->add_child_text ("DCP");
 318
 319         Content::as_xml (node, with_paths);
 320
 321         if (video) {
 322                 video->as_xml (node);
 323         }
 324
 325         if (audio) {
 326                 audio->as_xml (node);
 327                 node->add_child("AudioFrameRate")->add_child_text (raw_convert<string> (audio->stream()->frame_rate()));
 328                 node->add_child("AudioLength")->add_child_text (raw_convert<string> (audio->stream()->length()));
 329                 audio->stream()->mapping().as_xml (node->add_child("AudioMapping"));
 330         }
 331
 332         BOOST_FOREACH (shared_ptr<TextContent> i, text) {
 333                 i->as_xml (node);
 334         }
 335
 336         if (atmos) {
 337                 atmos->as_xml (node);
 338         }
 339
 340         boost::mutex::scoped_lock lm (_mutex);
 341         node->add_child("Name")->add_child_text (_name);
 342         node->add_child("Encrypted")->add_child_text (_encrypted ? "1" : "0");
 343         node->add_child("NeedsAssets")->add_child_text (_needs_assets ? "1" : "0");
 344         if (_kdm) {
 345                 node->add_child("KDM")->add_child_text (_kdm->as_xml ());
 346         }
 347         node->add_child("KDMValid")->add_child_text (_kdm_valid ? "1" : "0");
 348         node->add_child("ReferenceVideo")->add_child_text (_reference_video ? "1" : "0");
 349         node->add_child("ReferenceAudio")->add_child_text (_reference_audio ? "1" : "0");
 350         node->add_child("ReferenceOpenSubtitle")->add_child_text(_reference_text[TEXT_OPEN_SUBTITLE] ? "1" : "0");
 351         node->add_child("ReferenceClosedCaption")->add_child_text(_reference_text[TEXT_CLOSED_CAPTION] ? "1" : "0");
 352         if (_standard) {
 353                 switch (_standard.get ()) {
 354                 case dcp::INTEROP:
 355                         node->add_child("Standard")->add_child_text ("Interop");
 356                         break;
 357                 case dcp::SMPTE:
 358                         node->add_child("Standard")->add_child_text ("SMPTE");
 359                         break;
 360                 default:
 361                         DCPOMATIC_ASSERT (false);
 362                 }
 363         }
 364         node->add_child("ThreeD")->add_child_text (_three_d ? "1" : "0");
 365         if (_content_kind) {
 366                 node->add_child("ContentKind")->add_child_text(dcp::content_kind_to_string(*_content_kind));
 367         }
 368         if (_cpl) {
 369                 node->add_child("CPL")->add_child_text (_cpl.get ());
 370         }
 371         BOOST_FOREACH (int64_t i, _reel_lengths) {
 372                 node->add_child("ReelLength")->add_child_text (raw_convert<string> (i));
 373         }
 374
 375         for (map<dcp::Marker, ContentTime>::const_iterator i = _markers.begin(); i != _markers.end(); ++i) {
 376                 xmlpp::Element* marker = node->add_child("Marker");
 377                 marker->set_attribute("type", dcp::marker_to_string(i->first));
 378                 marker->add_child_text(raw_convert<string>(i->second.get()));
 379         }
 380
 381         BOOST_FOREACH (dcp::Rating i, _ratings) {
 382                 xmlpp::Element* rating = node->add_child("Rating");
 383                 i.as_xml (rating);
 384         }
 385
 386         node->add_child("ContentVersion")->add_child_text (_content_version);
 387 }
 388
 389 DCPTime
 390 DCPContent::full_length (shared_ptr<const Film> film) const
 391 {
 392         if (!video) {
 393                 return DCPTime();
 394         }
 395         FrameRateChange const frc (film, shared_from_this());
 396         return DCPTime::from_frames (llrint(video->length() * frc.factor()), film->video_frame_rate());
 397 }
 398
 399 DCPTime
 400 DCPContent::approximate_length () const
 401 {
 402         if (!video) {
 403                 return DCPTime();
 404         }
 405         return DCPTime::from_frames (video->length(), 24);
 406 }
 407
 408 string
 409 DCPContent::identifier () const
 410 {
 411         string s = Content::identifier() + "_";
 412
 413         if (video) {
 414                 s += video->identifier() + "_";
 415         }
 416
 417         BOOST_FOREACH (shared_ptr<TextContent> i, text) {
 418                 s += i->identifier () + " ";
 419         }
 420
 421         s += string (_reference_video ? "1" : "0");
 422         for (int i = 0; i < TEXT_COUNT; ++i) {
 423                 s += string (_reference_text[i] ? "1" : "0");
 424         }
 425         return s;
 426 }
 427
 428 void
 429 DCPContent::add_kdm (dcp::EncryptedKDM k)
 430 {
 431         _kdm = k;
 432 }
 433
 434 void
 435 DCPContent::add_ov (boost::filesystem::path ov)
 436 {
 437         read_directory (ov);
 438 }
 439
 440 bool
 441 DCPContent::can_be_played () const
 442 {
 443         return !needs_kdm() && !needs_assets();
 444 }
 445
 446 bool
 447 DCPContent::needs_kdm () const
 448 {
 449         boost::mutex::scoped_lock lm (_mutex);
 450         return _encrypted && !_kdm_valid;
 451 }
 452
 453 bool
 454 DCPContent::needs_assets () const
 455 {
 456         boost::mutex::scoped_lock lm (_mutex);
 457         return _needs_assets;
 458 }
 459
 460 vector<boost::filesystem::path>
 461 DCPContent::directories () const
 462 {
 463         return dcp::DCP::directories_from_files (paths());
 464 }
 465
 466 void
 467 DCPContent::add_properties (shared_ptr<const Film> film, list<UserProperty>& p) const
 468 {
 469         Content::add_properties (film, p);
 470         if (video) {
 471                 video->add_properties (p);
 472         }
 473         if (audio) {
 474                 audio->add_properties (film, p);
 475         }
 476 }
 477
 478 void
 479 DCPContent::set_default_colour_conversion ()
 480 {
 481         /* Default to no colour conversion for DCPs */
 482         if (video) {
 483                 video->unset_colour_conversion ();
 484         }
 485 }
 486
 487 void
 488 DCPContent::set_reference_video (bool r)
 489 {
 490         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_VIDEO);
 491
 492         {
 493                 boost::mutex::scoped_lock lm (_mutex);
 494                 _reference_video = r;
 495         }
 496 }
 497
 498 void
 499 DCPContent::set_reference_audio (bool r)
 500 {
 501         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_AUDIO);
 502
 503         {
 504                 boost::mutex::scoped_lock lm (_mutex);
 505                 _reference_audio = r;
 506         }
 507 }
 508
 509 void
 510 DCPContent::set_reference_text (TextType type, bool r)
 511 {
 512         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_TEXT);
 513
 514         {
 515                 boost::mutex::scoped_lock lm (_mutex);
 516                 _reference_text[type] = r;
 517         }
 518 }
 519
 520 list<DCPTimePeriod>
 521 DCPContent::reels (shared_ptr<const Film> film) const
 522 {
 523         list<int64_t> reel_lengths = _reel_lengths;
 524         if (reel_lengths.empty ()) {
 525                 /* Old metadata with no reel lengths; get them here instead */
 526                 try {
 527                         scoped_ptr<DCPExaminer> examiner (new DCPExaminer(shared_from_this(), film->tolerant()));
 528                         reel_lengths = examiner->reel_lengths ();
 529                 } catch (...) {
 530                         /* Could not examine the DCP; guess reels */
 531                         reel_lengths.push_back (length_after_trim(film).frames_round(film->video_frame_rate()));
 532                 }
 533         }
 534
 535         list<DCPTimePeriod> p;
 536
 537         /* This content's frame rate must be the same as the output DCP rate, so we can
 538            convert `directly' from ContentTime to DCPTime.
 539         */
 540
 541         /* The starting point of this content on the timeline */
 542         DCPTime pos = position() - DCPTime (trim_start().get());
 543
 544         BOOST_FOREACH (int64_t i, reel_lengths) {
 545                 /* This reel runs from `pos' to `to' */
 546                 DCPTime const to = pos + DCPTime::from_frames (i, film->video_frame_rate());
 547                 if (to > position()) {
 548                         p.push_back (DCPTimePeriod (max(position(), pos), min(end(film), to)));
 549                         if (to > end(film)) {
 550                                 break;
 551                         }
 552                 }
 553                 pos = to;
 554         }
 555
 556         return p;
 557 }
 558
 559 list<DCPTime>
 560 DCPContent::reel_split_points (shared_ptr<const Film> film) const
 561 {
 562         list<DCPTime> s;
 563         BOOST_FOREACH (DCPTimePeriod i, reels(film)) {
 564                 s.push_back (i.from);
 565         }
 566         return s;
 567 }
 568
 569 bool
 570 DCPContent::can_reference (shared_ptr<const Film> film, function<bool (shared_ptr<const Content>)> part, string overlapping, string& why_not) const
 571 {
 572         /* We must be using the same standard as the film */
 573         if (_standard) {
 574                 if (_standard.get() == dcp::INTEROP && !film->interop()) {
 575                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 576                         why_not = _("it is Interop and the film is set to SMPTE.");
 577                         return false;
 578                 } else if (_standard.get() == dcp::SMPTE && film->interop()) {
 579                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 580                         why_not = _("it is SMPTE and the film is set to Interop.");
 581                         return false;
 582                 }
 583         }
 584
 585         /* And the same frame rate */
 586         if (!video_frame_rate() || (lrint(video_frame_rate().get()) != film->video_frame_rate())) {
 587                 /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 588                 why_not = _("it has a different frame rate to the film.");
 589                 return false;
 590         }
 591
 592         list<DCPTimePeriod> const fr = film->reels ();
 593
 594         list<DCPTimePeriod> reel_list;
 595         try {
 596                 reel_list = reels (film);
 597         } catch (dcp::ReadError &) {
 598                 /* We couldn't read the DCP; it's probably missing */
 599                 return false;
 600         } catch (dcp::KDMDecryptionError &) {
 601                 /* We have an incorrect KDM */
 602                 return false;
 603         }
 604
 605         /* fr must contain reels().  It can also contain other reels, but it must at
 606            least contain reels().
 607         */
 608         BOOST_FOREACH (DCPTimePeriod i, reel_list) {
 609                 if (find (fr.begin(), fr.end(), i) == fr.end ()) {
 610                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 611                         why_not = _("its reel lengths differ from those in the film; set the reel mode to 'split by video content'.");
 612                         return false;
 613                 }
 614         }
 615
 616         ContentList a = overlaps (film, film->content(), part, position(), end(film));
 617         if (a.size() != 1 || a.front().get() != this) {
 618                 why_not = overlapping;
 619                 return false;
 620         }
 621
 622         return true;
 623 }
 624
 625 static
 626 bool check_video (shared_ptr<const Content> c)
 627 {
 628         return static_cast<bool>(c->video) && c->video->use();
 629 }
 630
 631 bool
 632 DCPContent::can_reference_video (shared_ptr<const Film> film, string& why_not) const
 633 {
 634         if (!video) {
 635                 why_not = _("There is no video in this DCP");
 636                 return false;
 637         }
 638
 639         if (film->resolution() != resolution()) {
 640                 if (resolution() == RESOLUTION_4K) {
 641                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 642                         why_not = _("it is 4K and the film is 2K.");
 643                 } else {
 644                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 645                         why_not = _("it is 2K and the film is 4K.");
 646                 }
 647                 return false;
 648         } else if (film->frame_size() != video->size()) {
 649                 /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 650                 why_not = _("its video frame size differs from the film's.");
 651                 return false;
 652         }
 653
 654         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 655         return can_reference (film, bind (&check_video, _1), _("it overlaps other video content; remove the other content."), why_not);
 656 }
 657
 658 static
 659 bool check_audio (shared_ptr<const Content> c)
 660 {
 661         return static_cast<bool>(c->audio) && !c->audio->mapping().mapped_output_channels().empty();
 662 }
 663
 664 bool
 665 DCPContent::can_reference_audio (shared_ptr<const Film> film, string& why_not) const
 666 {
 667         shared_ptr<DCPDecoder> decoder;
 668         try {
 669                 decoder.reset (new DCPDecoder (film, shared_from_this(), false, film->tolerant(), shared_ptr<DCPDecoder>()));
 670         } catch (dcp::ReadError &) {
 671                 /* We couldn't read the DCP, so it's probably missing */
 672                 return false;
 673         } catch (DCPError &) {
 674                 /* We couldn't read the DCP, so it's probably missing */
 675                 return false;
 676         } catch (dcp::KDMDecryptionError &) {
 677                 /* We have an incorrect KDM */
 678                 return false;
 679         }
 680
 681         BOOST_FOREACH (shared_ptr<dcp::Reel> i, decoder->reels()) {
 682                 if (!i->main_sound()) {
 683                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 684                         why_not = _("it does not have sound in all its reels.");
 685                         return false;
 686                 }
 687         }
 688
 689         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 690         return can_reference (film, bind (&check_audio, _1), _("it overlaps other audio content; remove the other content."), why_not);
 691 }
 692
 693 static
 694 bool check_text (shared_ptr<const Content> c)
 695 {
 696         return !c->text.empty();
 697 }
 698
 699 bool
 700 DCPContent::can_reference_text (shared_ptr<const Film> film, TextType type, string& why_not) const
 701 {
 702         shared_ptr<DCPDecoder> decoder;
 703         try {
 704                 decoder.reset (new DCPDecoder (film, shared_from_this(), false, film->tolerant(), shared_ptr<DCPDecoder>()));
 705         } catch (dcp::ReadError &) {
 706                 /* We couldn't read the DCP, so it's probably missing */
 707                 return false;
 708         } catch (dcp::KDMDecryptionError &) {
 709                 /* We have an incorrect KDM */
 710                 return false;
 711         }
 712
 713         BOOST_FOREACH (shared_ptr<dcp::Reel> i, decoder->reels()) {
 714                 if (type == TEXT_OPEN_SUBTITLE && !i->main_subtitle()) {
 715                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 716                         why_not = _("it does not have open subtitles in all its reels.");
 717                         return false;
 718                 }
 719                 if (type == TEXT_CLOSED_CAPTION && i->closed_captions().empty()) {
 720                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 721                         why_not = _("it does not have closed captions in all its reels.");
 722                         return false;
 723                 }
 724         }
 725
 726         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 727         return can_reference (film, bind (&check_text, _1), _("it overlaps other text content; remove the other content."), why_not);
 728 }
 729
 730 void
 731 DCPContent::take_settings_from (shared_ptr<const Content> c)
 732 {
 733         shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (c);
 734         if (!dc) {
 735                 return;
 736         }
 737
 738         _reference_video = dc->_reference_video;
 739         _reference_audio = dc->_reference_audio;
 740         for (int i = 0; i < TEXT_COUNT; ++i) {
 741                 _reference_text[i] = dc->_reference_text[i];
 742         }
 743 }
 744
 745 void
 746 DCPContent::set_cpl (string id)
 747 {
 748         ChangeSignaller<Content> cc (this, DCPContentProperty::CPL);
 749
 750         {
 751                 boost::mutex::scoped_lock lm (_mutex);
 752                 _cpl = id;
 753         }
 754 }
 755
 756 bool
 757 DCPContent::kdm_timing_window_valid () const
 758 {
 759         if (!_kdm) {
 760                 return true;
 761         }
 762
 763         dcp::LocalTime now;
 764         return _kdm->not_valid_before() < now && now < _kdm->not_valid_after();
 765 }
 766
 767
 768 Resolution
 769 DCPContent::resolution () const
 770 {
 771         if (video->size().width > 2048 || video->size().height > 1080) {
 772                 return RESOLUTION_4K;
 773         }
 774
 775         return RESOLUTION_2K;
 776 }
 777