src/lib/ffmpeg_content.cc

   1 /*
   2     Copyright (C) 2013-2016 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 "ffmpeg_content.h"
  22 #include "video_content.h"
  23 #include "audio_content.h"
  24 #include "ffmpeg_examiner.h"
  25 #include "ffmpeg_subtitle_stream.h"
  26 #include "ffmpeg_audio_stream.h"
  27 #include "compose.hpp"
  28 #include "job.h"
  29 #include "util.h"
  30 #include "filter.h"
  31 #include "film.h"
  32 #include "log.h"
  33 #include "exceptions.h"
  34 #include "frame_rate_change.h"
  35 #include "text_content.h"
  36 #include <dcp/raw_convert.h>
  37 #include <libcxml/cxml.h>
  38 extern "C" {
  39 #include <libavformat/avformat.h>
  40 #include <libavutil/pixdesc.h>
  41 }
  42 #include <libxml++/libxml++.h>
  43 #include <boost/foreach.hpp>
  44 #include <iostream>
  45
  46 #include "i18n.h"
  47
  48 using std::string;
  49 using std::vector;
  50 using std::list;
  51 using std::cout;
  52 using std::pair;
  53 using std::make_pair;
  54 using std::max;
  55 using boost::shared_ptr;
  56 using boost::dynamic_pointer_cast;
  57 using boost::optional;
  58 using dcp::raw_convert;
  59 using namespace dcpomatic;
  60
  61 int const FFmpegContentProperty::SUBTITLE_STREAMS = 100;
  62 int const FFmpegContentProperty::SUBTITLE_STREAM = 101;
  63 int const FFmpegContentProperty::FILTERS = 102;
  64 int const FFmpegContentProperty::KDM = 103;
  65
  66 FFmpegContent::FFmpegContent (boost::filesystem::path p)
  67         : Content (p)
  68 #ifdef DCPOMATIC_VARIANT_SWAROOP
  69         , _encrypted (false)
  70 #endif
  71 {
  72
  73 }
  74
  75 template <class T>
  76 optional<T>
  77 get_optional_enum (cxml::ConstNodePtr node, string name)
  78 {
  79         optional<int> const v = node->optional_number_child<int>(name);
  80         if (!v) {
  81                 return optional<T>();
  82         }
  83         return static_cast<T>(*v);
  84 }
  85
  86 FFmpegContent::FFmpegContent (cxml::ConstNodePtr node, int version, list<string>& notes)
  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         list<cxml::NodePtr> c = node->node_children ("SubtitleStream");
  94         for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
  95                 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i, version)));
  96                 if ((*i)->optional_number_child<int> ("Selected")) {
  97                         _subtitle_stream = _subtitle_streams.back ();
  98                 }
  99         }
 100
 101         c = node->node_children ("AudioStream");
 102         for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
 103                 shared_ptr<FFmpegAudioStream> as (new FFmpegAudioStream (*i, version));
 104                 audio->add_stream (as);
 105                 if (version < 11 && !(*i)->optional_node_child ("Selected")) {
 106                         /* This is an old file and this stream is not selected, so un-map it */
 107                         as->set_mapping (AudioMapping (as->channels (), MAX_DCP_AUDIO_CHANNELS));
 108                 }
 109         }
 110
 111         c = node->node_children ("Filter");
 112         for (list<cxml::NodePtr>::iterator i = c.begin(); i != c.end(); ++i) {
 113                 Filter const * f = Filter::from_id ((*i)->content ());
 114                 if (f) {
 115                         _filters.push_back (f);
 116                 } else {
 117                         notes.push_back (String::compose (_("DCP-o-matic no longer supports the `%1' filter, so it has been turned off."), (*i)->content()));
 118                 }
 119         }
 120
 121         optional<ContentTime::Type> const f = node->optional_number_child<ContentTime::Type> ("FirstVideo");
 122         if (f) {
 123                 _first_video = ContentTime (f.get ());
 124         }
 125
 126         _color_range = get_optional_enum<AVColorRange>(node, "ColorRange");
 127         _color_primaries = get_optional_enum<AVColorPrimaries>(node, "ColorPrimaries");
 128         _color_trc = get_optional_enum<AVColorTransferCharacteristic>(node, "ColorTransferCharacteristic");
 129         _colorspace = get_optional_enum<AVColorSpace>(node, "Colorspace");
 130         _bits_per_pixel = node->optional_number_child<int> ("BitsPerPixel");
 131 #ifdef DCPOMATIC_VARIANT_SWAROOP
 132         _encrypted = node->optional_bool_child("Encrypted").get_value_or(false);
 133 #endif
 134 }
 135
 136 FFmpegContent::FFmpegContent (vector<shared_ptr<Content> > c)
 137         : Content (c)
 138 {
 139         vector<shared_ptr<Content> >::const_iterator i = c.begin ();
 140
 141         bool need_video = false;
 142         bool need_audio = false;
 143         bool need_text = false;
 144
 145         if (i != c.end ()) {
 146                 need_video = static_cast<bool> ((*i)->video);
 147                 need_audio = static_cast<bool> ((*i)->audio);
 148                 need_text = !(*i)->text.empty();
 149         }
 150
 151         while (i != c.end ()) {
 152                 if (need_video != static_cast<bool> ((*i)->video)) {
 153                         throw JoinError (_("Content to be joined must all have or not have video"));
 154                 }
 155                 if (need_audio != static_cast<bool> ((*i)->audio)) {
 156                         throw JoinError (_("Content to be joined must all have or not have audio"));
 157                 }
 158                 if (need_text != !(*i)->text.empty()) {
 159                         throw JoinError (_("Content to be joined must all have or not have subtitles or captions"));
 160                 }
 161                 ++i;
 162         }
 163
 164         if (need_video) {
 165                 video.reset (new VideoContent (this, c));
 166         }
 167         if (need_audio) {
 168                 audio.reset (new AudioContent (this, c));
 169         }
 170         if (need_text) {
 171                 text.push_back (shared_ptr<TextContent> (new TextContent (this, c)));
 172         }
 173
 174         shared_ptr<FFmpegContent> ref = dynamic_pointer_cast<FFmpegContent> (c[0]);
 175         DCPOMATIC_ASSERT (ref);
 176
 177         for (size_t i = 0; i < c.size(); ++i) {
 178                 shared_ptr<FFmpegContent> fc = dynamic_pointer_cast<FFmpegContent> (c[i]);
 179                 if (fc->only_text() && fc->only_text()->use() && *(fc->_subtitle_stream.get()) != *(ref->_subtitle_stream.get())) {
 180                         throw JoinError (_("Content to be joined must use the same subtitle stream."));
 181                 }
 182         }
 183
 184         /* XXX: should probably check that more of the stuff below is the same in *this and ref */
 185
 186         _subtitle_streams = ref->subtitle_streams ();
 187         _subtitle_stream = ref->subtitle_stream ();
 188         _first_video = ref->_first_video;
 189         _filters = ref->_filters;
 190         _color_range = ref->_color_range;
 191         _color_primaries = ref->_color_primaries;
 192         _color_trc = ref->_color_trc;
 193         _colorspace = ref->_colorspace;
 194         _bits_per_pixel = ref->_bits_per_pixel;
 195 #ifdef DCPOMATIC_VARIANT_SWAROOP
 196         _encrypted = ref->_encrypted;
 197 #endif
 198 }
 199
 200 void
 201 FFmpegContent::as_xml (xmlpp::Node* node, bool with_paths) const
 202 {
 203         node->add_child("Type")->add_child_text ("FFmpeg");
 204         Content::as_xml (node, with_paths);
 205
 206         if (video) {
 207                 video->as_xml (node);
 208         }
 209
 210         if (audio) {
 211                 audio->as_xml (node);
 212
 213                 BOOST_FOREACH (AudioStreamPtr i, audio->streams ()) {
 214                         shared_ptr<FFmpegAudioStream> f = dynamic_pointer_cast<FFmpegAudioStream> (i);
 215                         DCPOMATIC_ASSERT (f);
 216                         f->as_xml (node->add_child("AudioStream"));
 217                 }
 218         }
 219
 220         if (only_text()) {
 221                 only_text()->as_xml (node);
 222         }
 223
 224         boost::mutex::scoped_lock lm (_mutex);
 225
 226         for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
 227                 xmlpp::Node* t = node->add_child("SubtitleStream");
 228                 if (_subtitle_stream && *i == _subtitle_stream) {
 229                         t->add_child("Selected")->add_child_text("1");
 230                 }
 231                 (*i)->as_xml (t);
 232         }
 233
 234         for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
 235                 node->add_child("Filter")->add_child_text ((*i)->id ());
 236         }
 237
 238         if (_first_video) {
 239                 node->add_child("FirstVideo")->add_child_text (raw_convert<string> (_first_video.get().get()));
 240         }
 241
 242         if (_color_range) {
 243                 node->add_child("ColorRange")->add_child_text (raw_convert<string> (static_cast<int> (*_color_range)));
 244         }
 245         if (_color_primaries) {
 246                 node->add_child("ColorPrimaries")->add_child_text (raw_convert<string> (static_cast<int> (*_color_primaries)));
 247         }
 248         if (_color_trc) {
 249                 node->add_child("ColorTransferCharacteristic")->add_child_text (raw_convert<string> (static_cast<int> (*_color_trc)));
 250         }
 251         if (_colorspace) {
 252                 node->add_child("Colorspace")->add_child_text (raw_convert<string> (static_cast<int> (*_colorspace)));
 253         }
 254         if (_bits_per_pixel) {
 255                 node->add_child("BitsPerPixel")->add_child_text (raw_convert<string> (*_bits_per_pixel));
 256         }
 257 #ifdef DCPOMATIC_VARIANT_SWAROOP
 258         if (_encrypted) {
 259                 node->add_child("Encypted")->add_child_text ("1");
 260         }
 261 #endif
 262 }
 263
 264 void
 265 FFmpegContent::examine (shared_ptr<const Film> film, shared_ptr<Job> job)
 266 {
 267         ChangeSignaller<Content> cc1 (this, FFmpegContentProperty::SUBTITLE_STREAMS);
 268         ChangeSignaller<Content> cc2 (this, FFmpegContentProperty::SUBTITLE_STREAM);
 269
 270         if (job) {
 271                 job->set_progress_unknown ();
 272         }
 273
 274         Content::examine (film, job);
 275
 276         shared_ptr<FFmpegExaminer> examiner (new FFmpegExaminer (shared_from_this (), job));
 277
 278         if (examiner->has_video ()) {
 279                 video.reset (new VideoContent (this));
 280                 video->take_from_examiner (examiner);
 281         }
 282
 283         boost::filesystem::path first_path = path (0);
 284
 285         {
 286                 boost::mutex::scoped_lock lm (_mutex);
 287
 288                 if (examiner->has_video ()) {
 289                         _first_video = examiner->first_video ();
 290                         _color_range = examiner->color_range ();
 291                         _color_primaries = examiner->color_primaries ();
 292                         _color_trc = examiner->color_trc ();
 293                         _colorspace = examiner->colorspace ();
 294                         _bits_per_pixel = examiner->bits_per_pixel ();
 295
 296                         if (examiner->rotation()) {
 297                                 double rot = *examiner->rotation ();
 298                                 if (fabs (rot - 180) < 1.0) {
 299                                         _filters.push_back (Filter::from_id ("vflip"));
 300                                         _filters.push_back (Filter::from_id ("hflip"));
 301                                 } else if (fabs (rot - 90) < 1.0) {
 302                                         _filters.push_back (Filter::from_id ("90clock"));
 303                                 } else if (fabs (rot - 270) < 1.0) {
 304                                         _filters.push_back (Filter::from_id ("90anticlock"));
 305                                 }
 306                         }
 307                 }
 308
 309                 if (!examiner->audio_streams().empty ()) {
 310                         audio.reset (new AudioContent (this));
 311
 312                         BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, examiner->audio_streams ()) {
 313                                 audio->add_stream (i);
 314                         }
 315
 316                         AudioStreamPtr as = audio->streams().front();
 317                         AudioMapping m = as->mapping ();
 318                         m.make_default (film ? film->audio_processor() : 0, first_path);
 319                         as->set_mapping (m);
 320                 }
 321
 322                 _subtitle_streams = examiner->subtitle_streams ();
 323                 if (!_subtitle_streams.empty ()) {
 324                         text.clear ();
 325                         text.push_back (shared_ptr<TextContent> (new TextContent (this, TEXT_OPEN_SUBTITLE, TEXT_UNKNOWN)));
 326                         _subtitle_stream = _subtitle_streams.front ();
 327                 }
 328
 329 #ifdef DCPOMATIC_VARIANT_SWAROOP
 330                 _encrypted = first_path.extension() == ".ecinema";
 331 #endif
 332         }
 333
 334         if (examiner->has_video ()) {
 335                 set_default_colour_conversion ();
 336         }
 337
 338 #ifdef DCPOMATIC_VARIANT_SWAROOP
 339         _id = examiner->id ();
 340 #endif
 341 }
 342
 343 string
 344 FFmpegContent::summary () const
 345 {
 346         if (video && audio) {
 347                 return String::compose (_("%1 [movie]"), path_summary ());
 348         } else if (video) {
 349                 return String::compose (_("%1 [video]"), path_summary ());
 350         } else if (audio) {
 351                 return String::compose (_("%1 [audio]"), path_summary ());
 352         }
 353
 354         return path_summary ();
 355 }
 356
 357 string
 358 FFmpegContent::technical_summary () const
 359 {
 360         string as = "";
 361         BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, ffmpeg_audio_streams ()) {
 362                 as += i->technical_summary () + " " ;
 363         }
 364
 365         if (as.empty ()) {
 366                 as = "none";
 367         }
 368
 369         string ss = "none";
 370         if (_subtitle_stream) {
 371                 ss = _subtitle_stream->technical_summary ();
 372         }
 373
 374         string filt = Filter::ffmpeg_string (_filters);
 375
 376         string s = Content::technical_summary ();
 377
 378         if (video) {
 379                 s += " - " + video->technical_summary ();
 380         }
 381
 382         if (audio) {
 383                 s += " - " + audio->technical_summary ();
 384         }
 385
 386         return s + String::compose (
 387                 "ffmpeg: audio %1 subtitle %2 filters %3", as, ss, filt
 388                 );
 389 }
 390
 391 void
 392 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
 393 {
 394         ChangeSignaller<Content> cc (this, FFmpegContentProperty::SUBTITLE_STREAM);
 395
 396         {
 397                 boost::mutex::scoped_lock lm (_mutex);
 398                 _subtitle_stream = s;
 399         }
 400 }
 401
 402 bool
 403 operator== (FFmpegStream const & a, FFmpegStream const & b)
 404 {
 405         return a._id == b._id;
 406 }
 407
 408 bool
 409 operator!= (FFmpegStream const & a, FFmpegStream const & b)
 410 {
 411         return a._id != b._id;
 412 }
 413
 414 DCPTime
 415 FFmpegContent::full_length (shared_ptr<const Film> film) const
 416 {
 417         FrameRateChange const frc (film, shared_from_this());
 418         if (video) {
 419                 return DCPTime::from_frames (llrint (video->length_after_3d_combine() * frc.factor()), film->video_frame_rate());
 420         }
 421
 422         if (audio) {
 423                 DCPTime longest;
 424                 BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
 425                         longest = max (longest, DCPTime::from_frames(llrint(i->length() / frc.speed_up), i->frame_rate()));
 426                 }
 427                 return longest;
 428         }
 429
 430         /* XXX: subtitle content? */
 431
 432         return DCPTime();
 433 }
 434
 435 DCPTime
 436 FFmpegContent::approximate_length () const
 437 {
 438         if (video) {
 439                 return DCPTime::from_frames (video->length_after_3d_combine(), 24);
 440         }
 441
 442         DCPOMATIC_ASSERT (audio);
 443
 444         Frame longest = 0;
 445         BOOST_FOREACH (AudioStreamPtr i, audio->streams ()) {
 446                 longest = max (longest, Frame(llrint(i->length())));
 447         }
 448
 449         return DCPTime::from_frames (longest, 24);
 450 }
 451
 452 void
 453 FFmpegContent::set_filters (vector<Filter const *> const & filters)
 454 {
 455         ChangeSignaller<Content> cc (this, FFmpegContentProperty::FILTERS);
 456
 457         {
 458                 boost::mutex::scoped_lock lm (_mutex);
 459                 _filters = filters;
 460         }
 461 }
 462
 463 string
 464 FFmpegContent::identifier () const
 465 {
 466         string s = Content::identifier();
 467
 468         if (video) {
 469                 s += "_" + video->identifier();
 470         }
 471
 472         if (only_text() && only_text()->use() && only_text()->burn()) {
 473                 s += "_" + only_text()->identifier();
 474         }
 475
 476         boost::mutex::scoped_lock lm (_mutex);
 477
 478         if (_subtitle_stream) {
 479                 s += "_" + _subtitle_stream->identifier ();
 480         }
 481
 482         for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
 483                 s += "_" + (*i)->id ();
 484         }
 485
 486         return s;
 487 }
 488
 489 void
 490 FFmpegContent::set_default_colour_conversion ()
 491 {
 492         DCPOMATIC_ASSERT (video);
 493
 494         dcp::Size const s = video->size ();
 495
 496         boost::mutex::scoped_lock lm (_mutex);
 497
 498         switch (_colorspace.get_value_or(AVCOL_SPC_UNSPECIFIED)) {
 499         case AVCOL_SPC_RGB:
 500                 video->set_colour_conversion (PresetColourConversion::from_id ("srgb").conversion);
 501                 break;
 502         case AVCOL_SPC_BT709:
 503                 video->set_colour_conversion (PresetColourConversion::from_id ("rec709").conversion);
 504                 break;
 505         case AVCOL_SPC_BT470BG:
 506         case AVCOL_SPC_SMPTE170M:
 507         case AVCOL_SPC_SMPTE240M:
 508                 video->set_colour_conversion (PresetColourConversion::from_id ("rec601").conversion);
 509                 break;
 510         case AVCOL_SPC_BT2020_CL:
 511         case AVCOL_SPC_BT2020_NCL:
 512                 video->set_colour_conversion (PresetColourConversion::from_id ("rec2020").conversion);
 513                 break;
 514         default:
 515                 if (s.width < 1080) {
 516                         video->set_colour_conversion (PresetColourConversion::from_id ("rec601").conversion);
 517                 } else {
 518                         video->set_colour_conversion (PresetColourConversion::from_id ("rec709").conversion);
 519                 }
 520                 break;
 521         }
 522 }
 523
 524 void
 525 FFmpegContent::add_properties (shared_ptr<const Film> film, list<UserProperty>& p) const
 526 {
 527         Content::add_properties (film, p);
 528
 529         if (video) {
 530                 video->add_properties (p);
 531
 532                 if (_bits_per_pixel) {
 533                         int const sub = 219 * pow (2, _bits_per_pixel.get() - 8);
 534                         int const total = pow (2, _bits_per_pixel.get());
 535
 536                         switch (_color_range.get_value_or(AVCOL_RANGE_UNSPECIFIED)) {
 537                         case AVCOL_RANGE_UNSPECIFIED:
 538                                 /// TRANSLATORS: this means that the range of pixel values used in this
 539                                 /// file is unknown (not specified in the file).
 540                                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour range"), _("Unspecified")));
 541                                 break;
 542                         case AVCOL_RANGE_MPEG:
 543                                 /// TRANSLATORS: this means that the range of pixel values used in this
 544                                 /// file is limited, so that not all possible values are valid.
 545                                 p.push_back (
 546                                         UserProperty (
 547                                                 UserProperty::VIDEO, _("Colour range"), String::compose (_("Limited (%1-%2)"), (total - sub) / 2, (total + sub) / 2)
 548                                                 )
 549                                         );
 550                                 break;
 551                         case AVCOL_RANGE_JPEG:
 552                                 /// TRANSLATORS: this means that the range of pixel values used in this
 553                                 /// file is full, so that all possible pixel values are valid.
 554                                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour range"), String::compose (_("Full (0-%1)"), total)));
 555                                 break;
 556                         default:
 557                                 DCPOMATIC_ASSERT (false);
 558                         }
 559                 } else {
 560                         switch (_color_range.get_value_or(AVCOL_RANGE_UNSPECIFIED)) {
 561                         case AVCOL_RANGE_UNSPECIFIED:
 562                                 /// TRANSLATORS: this means that the range of pixel values used in this
 563                                 /// file is unknown (not specified in the file).
 564                                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour range"), _("Unspecified")));
 565                                 break;
 566                         case AVCOL_RANGE_MPEG:
 567                                 /// TRANSLATORS: this means that the range of pixel values used in this
 568                                 /// file is limited, so that not all possible values are valid.
 569                                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour range"), _("Limited")));
 570                                 break;
 571                         case AVCOL_RANGE_JPEG:
 572                                 /// TRANSLATORS: this means that the range of pixel values used in this
 573                                 /// file is full, so that all possible pixel values are valid.
 574                                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour range"), _("Full")));
 575                                 break;
 576                         default:
 577                                 DCPOMATIC_ASSERT (false);
 578                         }
 579                 }
 580
 581                 char const * primaries[] = {
 582                         _("Unspecified"),
 583                         _("BT709"),
 584                         _("Unspecified"),
 585                         _("Unspecified"),
 586                         _("BT470M"),
 587                         _("BT470BG"),
 588                         _("SMPTE 170M (BT601)"),
 589                         _("SMPTE 240M"),
 590                         _("Film"),
 591                         _("BT2020"),
 592                         _("SMPTE ST 428-1 (CIE 1931 XYZ)"),
 593                         _("SMPTE ST 431-2 (2011)"),
 594                         _("SMPTE ST 432-1 D65 (2010)"), // 12
 595                         "", // 13
 596                         "", // 14
 597                         "", // 15
 598                         "", // 16
 599                         "", // 17
 600                         "", // 18
 601                         "", // 19
 602                         "", // 20
 603                         "", // 21
 604                         _("JEDEC P22")
 605                 };
 606
 607                 DCPOMATIC_ASSERT (AVCOL_PRI_NB <= 23);
 608                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour primaries"), primaries[_color_primaries.get_value_or(AVCOL_PRI_UNSPECIFIED)]));
 609
 610                 char const * transfers[] = {
 611                         _("Unspecified"),
 612                         _("BT709"),
 613                         _("Unspecified"),
 614                         _("Unspecified"),
 615                         _("Gamma 22 (BT470M)"),
 616                         _("Gamma 28 (BT470BG)"),
 617                         _("SMPTE 170M (BT601)"),
 618                         _("SMPTE 240M"),
 619                         _("Linear"),
 620                         _("Logarithmic (100:1 range)"),
 621                         _("Logarithmic (316:1 range)"),
 622                         _("IEC61966-2-4"),
 623                         _("BT1361 extended colour gamut"),
 624                         _("IEC61966-2-1 (sRGB or sYCC)"),
 625                         _("BT2020 for a 10-bit system"),
 626                         _("BT2020 for a 12-bit system"),
 627                         _("SMPTE ST 2084 for 10, 12, 14 and 16 bit systems"),
 628                         _("SMPTE ST 428-1"),
 629                         _("ARIB STD-B67 ('Hybrid log-gamma')")
 630                 };
 631
 632                 DCPOMATIC_ASSERT (AVCOL_TRC_NB <= 19);
 633                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colour transfer characteristic"), transfers[_color_trc.get_value_or(AVCOL_TRC_UNSPECIFIED)]));
 634
 635                 char const * spaces[] = {
 636                         _("RGB / sRGB (IEC61966-2-1)"),
 637                         _("BT709"),
 638                         _("Unspecified"),
 639                         _("Unspecified"),
 640                         _("FCC"),
 641                         _("BT470BG (BT601-6)"),
 642                         _("SMPTE 170M (BT601-6)"),
 643                         _("SMPTE 240M"),
 644                         _("YCOCG"),
 645                         _("BT2020 non-constant luminance"),
 646                         _("BT2020 constant luminance"),
 647                         _("SMPTE 2085, Y'D'zD'x"),
 648                         _("Chroma-derived non-constant luminance"),
 649                         _("Chroma-derived constant luminance"),
 650                         _("BT2100")
 651                 };
 652
 653                 DCPOMATIC_ASSERT (AVCOL_SPC_NB == 15);
 654                 p.push_back (UserProperty (UserProperty::VIDEO, _("Colourspace"), spaces[_colorspace.get_value_or(AVCOL_SPC_UNSPECIFIED)]));
 655
 656                 if (_bits_per_pixel) {
 657                         p.push_back (UserProperty (UserProperty::VIDEO, _("Bits per pixel"), *_bits_per_pixel));
 658                 }
 659         }
 660
 661         if (audio) {
 662                 audio->add_properties (film, p);
 663         }
 664 }
 665
 666 /** Our subtitle streams have colour maps, which can be changed, but
 667  *  they have no way of signalling that change.  As a hack, we have this
 668  *  method which callers can use when they've modified one of our subtitle
 669  *  streams.
 670  */
 671 void
 672 FFmpegContent::signal_subtitle_stream_changed ()
 673 {
 674         /* XXX: this is too late; really it should be before the change */
 675         ChangeSignaller<Content> cc (this, FFmpegContentProperty::SUBTITLE_STREAM);
 676 }
 677
 678 vector<shared_ptr<FFmpegAudioStream> >
 679 FFmpegContent::ffmpeg_audio_streams () const
 680 {
 681         vector<shared_ptr<FFmpegAudioStream> > fa;
 682
 683         if (audio) {
 684                 BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
 685                         fa.push_back (dynamic_pointer_cast<FFmpegAudioStream> (i));
 686                 }
 687         }
 688
 689         return fa;
 690 }
 691
 692 void
 693 FFmpegContent::take_settings_from (shared_ptr<const Content> c)
 694 {
 695         shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (c);
 696         if (!fc) {
 697                 return;
 698                 }
 699
 700         Content::take_settings_from (c);
 701         _filters = fc->_filters;
 702 }
 703
 704 #ifdef DCPOMATIC_VARIANT_SWAROOP
 705 void
 706 FFmpegContent::add_kdm (EncryptedECinemaKDM kdm)
 707 {
 708         ChangeSignaller<Content> cc (this, FFmpegContentProperty::KDM);
 709         boost::mutex::scoped_lock lm (_mutex);
 710         _kdm = kdm;
 711
 712 }
 713 #endif