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