src/lib/dcp_content.cc

   1 /*
   2     Copyright (C) 2014-2018 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 boost::shared_ptr;
  53 using boost::scoped_ptr;
  54 using boost::optional;
  55 using boost::function;
  56 using boost::dynamic_pointer_cast;
  57 using dcp::raw_convert;
  58
  59 int const DCPContentProperty::NEEDS_ASSETS       = 600;
  60 int const DCPContentProperty::NEEDS_KDM          = 601;
  61 int const DCPContentProperty::REFERENCE_VIDEO    = 602;
  62 int const DCPContentProperty::REFERENCE_AUDIO    = 603;
  63 int const DCPContentProperty::REFERENCE_TEXT     = 604;
  64 int const DCPContentProperty::NAME               = 605;
  65 int const DCPContentProperty::TEXTS              = 606;
  66 int const DCPContentProperty::CPL                = 607;
  67
  68 DCPContent::DCPContent (boost::filesystem::path p)
  69         : _encrypted (false)
  70         , _needs_assets (false)
  71         , _kdm_valid (false)
  72         , _reference_video (false)
  73         , _reference_audio (false)
  74         , _three_d (false)
  75 {
  76         LOG_GENERAL ("Creating DCP content from %1", p.string());
  77
  78         read_directory (p);
  79         set_default_colour_conversion ();
  80
  81         for (int i = 0; i < TEXT_COUNT; ++i) {
  82                 _reference_text[i] = false;
  83         }
  84 }
  85
  86 DCPContent::DCPContent (cxml::ConstNodePtr node, int version)
  87         : Content (node)
  88 {
  89         video = VideoContent::from_xml (this, node, version);
  90         audio = AudioContent::from_xml (this, node, version);
  91         text = TextContent::from_xml (this, node, version);
  92
  93         for (int i = 0; i < TEXT_COUNT; ++i) {
  94                 _reference_text[i] = false;
  95         }
  96
  97         if (video && audio) {
  98                 audio->set_stream (
  99                         AudioStreamPtr (
 100                                 new AudioStream (
 101                                         node->number_child<int> ("AudioFrameRate"),
 102                                         /* AudioLength was not present in some old metadata versions */
 103                                         node->optional_number_child<Frame>("AudioLength").get_value_or (
 104                                                 video->length() * node->number_child<int>("AudioFrameRate") / video_frame_rate().get()
 105                                                 ),
 106                                         AudioMapping (node->node_child ("AudioMapping"), version)
 107                                         )
 108                                 )
 109                         );
 110         }
 111
 112         _name = node->string_child ("Name");
 113         _encrypted = node->bool_child ("Encrypted");
 114         _needs_assets = node->optional_bool_child("NeedsAssets").get_value_or (false);
 115         if (node->optional_node_child ("KDM")) {
 116                 _kdm = dcp::EncryptedKDM (node->string_child ("KDM"));
 117         }
 118         _kdm_valid = node->bool_child ("KDMValid");
 119         _reference_video = node->optional_bool_child ("ReferenceVideo").get_value_or (false);
 120         _reference_audio = node->optional_bool_child ("ReferenceAudio").get_value_or (false);
 121         if (version >= 37) {
 122                 _reference_text[TEXT_OPEN_SUBTITLE] = node->optional_bool_child("ReferenceOpenSubtitle").get_value_or(false);
 123                 _reference_text[TEXT_CLOSED_CAPTION] = node->optional_bool_child("ReferenceClosedCaption").get_value_or(false);
 124         } else {
 125                 _reference_text[TEXT_OPEN_SUBTITLE] = node->optional_bool_child("ReferenceSubtitle").get_value_or(false);
 126                 _reference_text[TEXT_CLOSED_CAPTION] = false;
 127         }
 128         if (node->optional_string_child("Standard")) {
 129                 string const s = node->optional_string_child("Standard").get();
 130                 if (s == "Interop") {
 131                         _standard = dcp::INTEROP;
 132                 } else if (s == "SMPTE") {
 133                         _standard = dcp::SMPTE;
 134                 } else {
 135                         DCPOMATIC_ASSERT (false);
 136                 }
 137         }
 138         _three_d = node->optional_bool_child("ThreeD").get_value_or (false);
 139
 140         optional<string> ck = node->optional_string_child("ContentKind");
 141         if (ck) {
 142                 _content_kind = dcp::content_kind_from_string (*ck);
 143         }
 144         _cpl = node->optional_string_child("CPL");
 145         BOOST_FOREACH (cxml::ConstNodePtr i, node->node_children("ReelLength")) {
 146                 _reel_lengths.push_back (raw_convert<int64_t> (i->content ()));
 147         }
 148 }
 149
 150 void
 151 DCPContent::read_directory (boost::filesystem::path p)
 152 {
 153         read_sub_directory (p);
 154
 155         bool have_assetmap = false;
 156         BOOST_FOREACH (boost::filesystem::path i, paths()) {
 157                 if (i.filename() == "ASSETMAP" || i.filename() == "ASSETMAP.xml") {
 158                         have_assetmap = true;
 159                 }
 160         }
 161
 162         if (!have_assetmap) {
 163                 throw DCPError ("No ASSETMAP or ASSETMAP.xml file found: is this a DCP?");
 164         }
 165 }
 166
 167 void
 168 DCPContent::read_sub_directory (boost::filesystem::path p)
 169 {
 170         LOG_GENERAL ("DCPContent::read_sub_directory reads %1", p.string());
 171         for (boost::filesystem::directory_iterator i(p); i != boost::filesystem::directory_iterator(); ++i) {
 172                 if (boost::filesystem::is_regular_file (i->path())) {
 173                         LOG_GENERAL ("Inside there's regular file %1", i->path().string());
 174                         add_path (i->path());
 175                 } else if (boost::filesystem::is_directory (i->path ())) {
 176                         LOG_GENERAL ("Inside there's directory %1", i->path().string());
 177                         read_sub_directory (i->path());
 178                 }
 179         }
 180 }
 181
 182 void
 183 DCPContent::examine (shared_ptr<const Film> film, shared_ptr<Job> job)
 184 {
 185         bool const needed_assets = needs_assets ();
 186         bool const needed_kdm = needs_kdm ();
 187         string const old_name = name ();
 188         int const old_texts = text.size ();
 189
 190         ChangeSignaller<Content> cc_texts (this, DCPContentProperty::TEXTS);
 191         ChangeSignaller<Content> cc_assets (this, DCPContentProperty::NEEDS_ASSETS);
 192         ChangeSignaller<Content> cc_kdm (this, DCPContentProperty::NEEDS_KDM);
 193         ChangeSignaller<Content> cc_name (this, DCPContentProperty::NAME);
 194         ChangeSignaller<Content> cc_streams (this, AudioContentProperty::STREAMS);
 195
 196         if (job) {
 197                 job->set_progress_unknown ();
 198         }
 199         Content::examine (film, job);
 200
 201         shared_ptr<DCPExaminer> examiner (new DCPExaminer (shared_from_this ()));
 202
 203         if (examiner->has_video()) {
 204                 {
 205                         boost::mutex::scoped_lock lm (_mutex);
 206                         video.reset (new VideoContent (this));
 207                 }
 208                 video->take_from_examiner (examiner);
 209                 set_default_colour_conversion ();
 210         }
 211
 212         if (examiner->has_audio()) {
 213                 ChangeSignaller<Content> cc (this, AudioContentProperty::STREAMS);
 214                 {
 215                         boost::mutex::scoped_lock lm (_mutex);
 216                         audio.reset (new AudioContent (this));
 217                 }
 218                 AudioStreamPtr as (new AudioStream (examiner->audio_frame_rate(), examiner->audio_length(), examiner->audio_channels()));
 219                 audio->set_stream (as);
 220                 AudioMapping m = as->mapping ();
 221                 m.make_default (film ? film->audio_processor() : 0);
 222                 as->set_mapping (m);
 223         }
 224
 225         int texts = 0;
 226         {
 227                 boost::mutex::scoped_lock lm (_mutex);
 228                 _name = examiner->name ();
 229                 for (int i = 0; i < TEXT_COUNT; ++i) {
 230                         if (examiner->has_text(static_cast<TextType>(i))) {
 231                                 text.push_back (shared_ptr<TextContent>(new TextContent(this, static_cast<TextType>(i), static_cast<TextType>(i))));
 232                         }
 233                 }
 234                 texts = text.size ();
 235                 _encrypted = examiner->encrypted ();
 236                 _needs_assets = examiner->needs_assets ();
 237                 _kdm_valid = examiner->kdm_valid ();
 238                 _standard = examiner->standard ();
 239                 _three_d = examiner->three_d ();
 240                 _content_kind = examiner->content_kind ();
 241                 _cpl = examiner->cpl ();
 242                 _reel_lengths = examiner->reel_lengths ();
 243         }
 244
 245         if (old_texts == texts) {
 246                 cc_texts.abort ();
 247         }
 248
 249         if (needed_assets == needs_assets()) {
 250                 cc_assets.abort ();
 251         }
 252
 253         if (needed_kdm == needs_kdm()) {
 254                 cc_kdm.abort ();
 255         }
 256
 257         if (old_name == name()) {
 258                 cc_name.abort ();
 259         }
 260
 261         if (video) {
 262                 video->set_frame_type (_three_d ? VIDEO_FRAME_TYPE_3D : VIDEO_FRAME_TYPE_2D);
 263         }
 264 }
 265
 266 string
 267 DCPContent::summary () const
 268 {
 269         boost::mutex::scoped_lock lm (_mutex);
 270         return String::compose (_("%1 [DCP]"), _name);
 271 }
 272
 273 string
 274 DCPContent::technical_summary () const
 275 {
 276         string s = Content::technical_summary() + " - ";
 277         if (video) {
 278                 s += video->technical_summary() + " - ";
 279         }
 280         if (audio) {
 281                 s += audio->technical_summary() + " - ";
 282         }
 283         return s;
 284 }
 285
 286 void
 287 DCPContent::as_xml (xmlpp::Node* node, bool with_paths) const
 288 {
 289         node->add_child("Type")->add_child_text ("DCP");
 290
 291         Content::as_xml (node, with_paths);
 292
 293         if (video) {
 294                 video->as_xml (node);
 295         }
 296
 297         if (audio) {
 298                 audio->as_xml (node);
 299                 node->add_child("AudioFrameRate")->add_child_text (raw_convert<string> (audio->stream()->frame_rate()));
 300                 node->add_child("AudioLength")->add_child_text (raw_convert<string> (audio->stream()->length()));
 301                 audio->stream()->mapping().as_xml (node->add_child("AudioMapping"));
 302         }
 303
 304         BOOST_FOREACH (shared_ptr<TextContent> i, text) {
 305                 i->as_xml (node);
 306         }
 307
 308         boost::mutex::scoped_lock lm (_mutex);
 309         node->add_child("Name")->add_child_text (_name);
 310         node->add_child("Encrypted")->add_child_text (_encrypted ? "1" : "0");
 311         node->add_child("NeedsAssets")->add_child_text (_needs_assets ? "1" : "0");
 312         if (_kdm) {
 313                 node->add_child("KDM")->add_child_text (_kdm->as_xml ());
 314         }
 315         node->add_child("KDMValid")->add_child_text (_kdm_valid ? "1" : "0");
 316         node->add_child("ReferenceVideo")->add_child_text (_reference_video ? "1" : "0");
 317         node->add_child("ReferenceAudio")->add_child_text (_reference_audio ? "1" : "0");
 318         node->add_child("ReferenceOpenSubtitle")->add_child_text(_reference_text[TEXT_OPEN_SUBTITLE] ? "1" : "0");
 319         node->add_child("ReferenceClosedCaption")->add_child_text(_reference_text[TEXT_CLOSED_CAPTION] ? "1" : "0");
 320         if (_standard) {
 321                 switch (_standard.get ()) {
 322                 case dcp::INTEROP:
 323                         node->add_child("Standard")->add_child_text ("Interop");
 324                         break;
 325                 case dcp::SMPTE:
 326                         node->add_child("Standard")->add_child_text ("SMPTE");
 327                         break;
 328                 default:
 329                         DCPOMATIC_ASSERT (false);
 330                 }
 331         }
 332         node->add_child("ThreeD")->add_child_text (_three_d ? "1" : "0");
 333         if (_content_kind) {
 334                 node->add_child("ContentKind")->add_child_text(dcp::content_kind_to_string(*_content_kind));
 335         }
 336         if (_cpl) {
 337                 node->add_child("CPL")->add_child_text (_cpl.get ());
 338         }
 339         BOOST_FOREACH (int64_t i, _reel_lengths) {
 340                 node->add_child("ReelLength")->add_child_text (raw_convert<string> (i));
 341         }
 342 }
 343
 344 DCPTime
 345 DCPContent::full_length (shared_ptr<const Film> film) const
 346 {
 347         if (!video) {
 348                 return DCPTime();
 349         }
 350         FrameRateChange const frc (film, shared_from_this());
 351         return DCPTime::from_frames (llrint(video->length() * frc.factor()), film->video_frame_rate());
 352 }
 353
 354 DCPTime
 355 DCPContent::approximate_length () const
 356 {
 357         if (!video) {
 358                 return DCPTime();
 359         }
 360         return DCPTime::from_frames (video->length(), 24);
 361 }
 362
 363 string
 364 DCPContent::identifier () const
 365 {
 366         string s = Content::identifier() + "_";
 367
 368         if (video) {
 369                 s += video->identifier() + "_";
 370         }
 371
 372         BOOST_FOREACH (shared_ptr<TextContent> i, text) {
 373                 s += i->identifier () + " ";
 374         }
 375
 376         s += string (_reference_video ? "1" : "0");
 377         for (int i = 0; i < TEXT_COUNT; ++i) {
 378                 s += string (_reference_text[i] ? "1" : "0");
 379         }
 380         return s;
 381 }
 382
 383 void
 384 DCPContent::add_kdm (dcp::EncryptedKDM k)
 385 {
 386         _kdm = k;
 387 }
 388
 389 void
 390 DCPContent::add_ov (boost::filesystem::path ov)
 391 {
 392         read_directory (ov);
 393 }
 394
 395 bool
 396 DCPContent::can_be_played () const
 397 {
 398         return !needs_kdm() && !needs_assets();
 399 }
 400
 401 bool
 402 DCPContent::needs_kdm () const
 403 {
 404         boost::mutex::scoped_lock lm (_mutex);
 405         return _encrypted && !_kdm_valid;
 406 }
 407
 408 bool
 409 DCPContent::needs_assets () const
 410 {
 411         boost::mutex::scoped_lock lm (_mutex);
 412         return _needs_assets;
 413 }
 414
 415 vector<boost::filesystem::path>
 416 DCPContent::directories () const
 417 {
 418         return dcp::DCP::directories_from_files (paths());
 419 }
 420
 421 void
 422 DCPContent::add_properties (shared_ptr<const Film> film, list<UserProperty>& p) const
 423 {
 424         Content::add_properties (p);
 425         if (video) {
 426                 video->add_properties (p);
 427         }
 428         if (audio) {
 429                 audio->add_properties (film, p);
 430         }
 431 }
 432
 433 void
 434 DCPContent::set_default_colour_conversion ()
 435 {
 436         /* Default to no colour conversion for DCPs */
 437         if (video) {
 438                 video->unset_colour_conversion ();
 439         }
 440 }
 441
 442 void
 443 DCPContent::set_reference_video (bool r)
 444 {
 445         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_VIDEO);
 446
 447         {
 448                 boost::mutex::scoped_lock lm (_mutex);
 449                 _reference_video = r;
 450         }
 451 }
 452
 453 void
 454 DCPContent::set_reference_audio (bool r)
 455 {
 456         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_AUDIO);
 457
 458         {
 459                 boost::mutex::scoped_lock lm (_mutex);
 460                 _reference_audio = r;
 461         }
 462 }
 463
 464 void
 465 DCPContent::set_reference_text (TextType type, bool r)
 466 {
 467         ChangeSignaller<Content> cc (this, DCPContentProperty::REFERENCE_TEXT);
 468
 469         {
 470                 boost::mutex::scoped_lock lm (_mutex);
 471                 _reference_text[type] = r;
 472         }
 473 }
 474
 475 list<DCPTimePeriod>
 476 DCPContent::reels (shared_ptr<const Film> film) const
 477 {
 478         list<int64_t> reel_lengths = _reel_lengths;
 479         if (reel_lengths.empty ()) {
 480                 /* Old metadata with no reel lengths; get them here instead */
 481                 try {
 482                         scoped_ptr<DCPExaminer> examiner (new DCPExaminer (shared_from_this()));
 483                         reel_lengths = examiner->reel_lengths ();
 484                 } catch (...) {
 485                         /* Could not examine the DCP; guess reels */
 486                         reel_lengths.push_back (length_after_trim(film).frames_round(film->video_frame_rate()));
 487                 }
 488         }
 489
 490         list<DCPTimePeriod> p;
 491
 492         /* This content's frame rate must be the same as the output DCP rate, so we can
 493            convert `directly' from ContentTime to DCPTime.
 494         */
 495
 496         /* The starting point of this content on the timeline */
 497         DCPTime pos = position() - DCPTime (trim_start().get());
 498
 499         BOOST_FOREACH (int64_t i, reel_lengths) {
 500                 /* This reel runs from `pos' to `to' */
 501                 DCPTime const to = pos + DCPTime::from_frames (i, film->video_frame_rate());
 502                 if (to > position()) {
 503                         p.push_back (DCPTimePeriod (max(position(), pos), min(end(film), to)));
 504                         if (to > end(film)) {
 505                                 break;
 506                         }
 507                 }
 508                 pos = to;
 509         }
 510
 511         return p;
 512 }
 513
 514 list<DCPTime>
 515 DCPContent::reel_split_points (shared_ptr<const Film> film) const
 516 {
 517         list<DCPTime> s;
 518         BOOST_FOREACH (DCPTimePeriod i, reels(film)) {
 519                 s.push_back (i.from);
 520         }
 521         return s;
 522 }
 523
 524 bool
 525 DCPContent::can_reference (shared_ptr<const Film> film, function<bool (shared_ptr<const Content>)> part, string overlapping, string& why_not) const
 526 {
 527         /* We must be using the same standard as the film */
 528         if (_standard) {
 529                 if (_standard.get() == dcp::INTEROP && !film->interop()) {
 530                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 531                         why_not = _("it is Interop and the film is set to SMPTE.");
 532                         return false;
 533                 } else if (_standard.get() == dcp::SMPTE && film->interop()) {
 534                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 535                         why_not = _("it is SMPTE and the film is set to Interop.");
 536                         return false;
 537                 }
 538         }
 539
 540         /* And the same frame rate */
 541         if (!video_frame_rate() || (lrint(video_frame_rate().get()) != film->video_frame_rate())) {
 542                 /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 543                 why_not = _("it has a different frame rate to the film.");
 544                 return false;
 545         }
 546
 547         list<DCPTimePeriod> const fr = film->reels ();
 548
 549         list<DCPTimePeriod> reel_list;
 550         try {
 551                 reel_list = reels (film);
 552         } catch (dcp::DCPReadError) {
 553                 /* We couldn't read the DCP; it's probably missing */
 554                 return false;
 555         } catch (dcp::KDMDecryptionError) {
 556                 /* We have an incorrect KDM */
 557                 return false;
 558         }
 559
 560         /* fr must contain reels().  It can also contain other reels, but it must at
 561            least contain reels().
 562         */
 563         BOOST_FOREACH (DCPTimePeriod i, reel_list) {
 564                 if (find (fr.begin(), fr.end(), i) == fr.end ()) {
 565                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 566                         why_not = _("its reel lengths differ from those in the film; set the reel mode to 'split by video content'.");
 567                         return false;
 568                 }
 569         }
 570
 571         ContentList a = overlaps (film, film->content(), part, position(), end(film));
 572         if (a.size() != 1 || a.front().get() != this) {
 573                 why_not = overlapping;
 574                 return false;
 575         }
 576
 577         return true;
 578 }
 579
 580 static
 581 bool check_video (shared_ptr<const Content> c)
 582 {
 583         return static_cast<bool>(c->video);
 584 }
 585
 586 bool
 587 DCPContent::can_reference_video (shared_ptr<const Film> film, string& why_not) const
 588 {
 589         if (!video) {
 590                 why_not = _("There is no video in this DCP");
 591                 return false;
 592         }
 593
 594         Resolution video_res = RESOLUTION_2K;
 595         if (video->size().width > 2048 || video->size().height > 1080) {
 596                 video_res = RESOLUTION_4K;
 597         }
 598
 599         if (film->resolution() != video_res) {
 600                 if (video_res == RESOLUTION_4K) {
 601                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 602                         why_not = _("it is 4K and the film is 2K.");
 603                 } else {
 604                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 605                         why_not = _("it is 2K and the film is 4K.");
 606                 }
 607                 return false;
 608         } else if (film->frame_size() != video->size()) {
 609                 /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 610                 why_not = _("its video frame size differs from the film's.");
 611                 return false;
 612         }
 613
 614         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 615         return can_reference (film, bind (&check_video, _1), _("it overlaps other video content; remove the other content."), why_not);
 616 }
 617
 618 static
 619 bool check_audio (shared_ptr<const Content> c)
 620 {
 621         return static_cast<bool>(c->audio);
 622 }
 623
 624 bool
 625 DCPContent::can_reference_audio (shared_ptr<const Film> film, string& why_not) const
 626 {
 627         shared_ptr<DCPDecoder> decoder;
 628         try {
 629                 decoder.reset (new DCPDecoder (film, shared_from_this(), false));
 630         } catch (dcp::DCPReadError) {
 631                 /* We couldn't read the DCP, so it's probably missing */
 632                 return false;
 633         } catch (DCPError) {
 634                 /* We couldn't read the DCP, so it's probably missing */
 635                 return false;
 636         } catch (dcp::KDMDecryptionError) {
 637                 /* We have an incorrect KDM */
 638                 return false;
 639         }
 640
 641         BOOST_FOREACH (shared_ptr<dcp::Reel> i, decoder->reels()) {
 642                 if (!i->main_sound()) {
 643                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 644                         why_not = _("it does not have sound in all its reels.");
 645                         return false;
 646                 }
 647         }
 648
 649         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 650         return can_reference (film, bind (&check_audio, _1), _("it overlaps other audio content; remove the other content."), why_not);
 651 }
 652
 653 static
 654 bool check_text (shared_ptr<const Content> c)
 655 {
 656         return !c->text.empty();
 657 }
 658
 659 bool
 660 DCPContent::can_reference_text (shared_ptr<const Film> film, TextType type, string& why_not) const
 661 {
 662         shared_ptr<DCPDecoder> decoder;
 663         try {
 664                 decoder.reset (new DCPDecoder (film, shared_from_this(), false));
 665         } catch (dcp::DCPReadError) {
 666
 667                 /* We couldn't read the DCP, so it's probably missing */
 668                 return false;
 669         } catch (dcp::KDMDecryptionError) {
 670                 /* We have an incorrect KDM */
 671                 return false;
 672         }
 673
 674         BOOST_FOREACH (shared_ptr<dcp::Reel> i, decoder->reels()) {
 675                 if (type == TEXT_OPEN_SUBTITLE && !i->main_subtitle()) {
 676                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 677                         why_not = _("it does not have open subtitles in all its reels.");
 678                         return false;
 679                 }
 680                 if (type == TEXT_CLOSED_CAPTION && i->closed_captions().empty()) {
 681                         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 682                         why_not = _("it does not have closed captions in all its reels.");
 683                         return false;
 684                 }
 685         }
 686
 687         /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
 688         return can_reference (film, bind (&check_text, _1), _("it overlaps other text content; remove the other content."), why_not);
 689 }
 690
 691 void
 692 DCPContent::take_settings_from (shared_ptr<const Content> c)
 693 {
 694         shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (c);
 695         if (!dc) {
 696                 return;
 697         }
 698
 699         _reference_video = dc->_reference_video;
 700         _reference_audio = dc->_reference_audio;
 701         for (int i = 0; i < TEXT_COUNT; ++i) {
 702                 _reference_text[i] = dc->_reference_text[i];
 703         }
 704 }
 705
 706 void
 707 DCPContent::set_cpl (string id)
 708 {
 709         ChangeSignaller<Content> cc (this, DCPContentProperty::CPL);
 710
 711         {
 712                 boost::mutex::scoped_lock lm (_mutex);
 713                 _cpl = id;
 714         }
 715 }
 716
 717 bool
 718 DCPContent::kdm_timing_window_valid () const
 719 {
 720         if (!_kdm) {
 721                 return true;
 722         }
 723
 724         dcp::LocalTime now;
 725         return _kdm->not_valid_before() < now && now < _kdm->not_valid_after();
 726 }