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 "safe_stringstream.h"
  36 #include "raw_convert.h"
  37 #include "subtitle_content.h"
  38 #include <libcxml/cxml.h>
  39 extern "C" {
  40 #include <libavformat/avformat.h>
  41 #include <libavutil/pixdesc.h>
  42 }
  43 #include <libxml++/libxml++.h>
  44 #include <boost/foreach.hpp>
  45 #include <iostream>
  46
  47 #include "i18n.h"
  48
  49 #define LOG_GENERAL(...) film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
  50
  51 using std::string;
  52 using std::vector;
  53 using std::list;
  54 using std::cout;
  55 using std::pair;
  56 using std::make_pair;
  57 using boost::shared_ptr;
  58 using boost::dynamic_pointer_cast;
  59 using boost::optional;
  60
  61 int const FFmpegContentProperty::SUBTITLE_STREAMS = 100;
  62 int const FFmpegContentProperty::SUBTITLE_STREAM = 101;
  63 int const FFmpegContentProperty::FILTERS = 102;
  64
  65 FFmpegContent::FFmpegContent (shared_ptr<const Film> film, boost::filesystem::path p)
  66         : Content (film, p)
  67 {
  68
  69 }
  70
  71 FFmpegContent::FFmpegContent (shared_ptr<const Film> film, cxml::ConstNodePtr node, int version, list<string>& notes)
  72         : Content (film, node)
  73 {
  74         video = VideoContent::from_xml (this, node, version);
  75         audio = AudioContent::from_xml (this, node);
  76         subtitle = SubtitleContent::from_xml (this, node, version);
  77
  78         list<cxml::NodePtr> c = node->node_children ("SubtitleStream");
  79         for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
  80                 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i, version)));
  81                 if ((*i)->optional_number_child<int> ("Selected")) {
  82                         _subtitle_stream = _subtitle_streams.back ();
  83                 }
  84         }
  85
  86         c = node->node_children ("AudioStream");
  87         for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
  88                 shared_ptr<FFmpegAudioStream> as (new FFmpegAudioStream (*i, version));
  89                 audio->add_stream (as);
  90                 if (version < 11 && !(*i)->optional_node_child ("Selected")) {
  91                         /* This is an old file and this stream is not selected, so un-map it */
  92                         as->set_mapping (AudioMapping (as->channels (), MAX_DCP_AUDIO_CHANNELS));
  93                 }
  94         }
  95
  96         c = node->node_children ("Filter");
  97         for (list<cxml::NodePtr>::iterator i = c.begin(); i != c.end(); ++i) {
  98                 Filter const * f = Filter::from_id ((*i)->content ());
  99                 if (f) {
 100                         _filters.push_back (f);
 101                 } else {
 102                         notes.push_back (String::compose (_("DCP-o-matic no longer supports the `%1' filter, so it has been turned off."), (*i)->content()));
 103                 }
 104         }
 105
 106         optional<ContentTime::Type> const f = node->optional_number_child<ContentTime::Type> ("FirstVideo");
 107         if (f) {
 108                 _first_video = ContentTime (f.get ());
 109         }
 110
 111         _color_range = static_cast<AVColorRange> (node->optional_number_child<int>("ColorRange").get_value_or (AVCOL_RANGE_UNSPECIFIED));
 112         _color_primaries = static_cast<AVColorPrimaries> (node->optional_number_child<int>("ColorPrimaries").get_value_or (AVCOL_PRI_UNSPECIFIED));
 113         _color_trc = static_cast<AVColorTransferCharacteristic> (
 114                 node->optional_number_child<int>("ColorTransferCharacteristic").get_value_or (AVCOL_TRC_UNSPECIFIED)
 115                 );
 116         _colorspace = static_cast<AVColorSpace> (node->optional_number_child<int>("Colorspace").get_value_or (AVCOL_SPC_UNSPECIFIED));
 117         _bits_per_pixel = node->optional_number_child<int> ("BitsPerPixel");
 118
 119 }
 120
 121 FFmpegContent::FFmpegContent (shared_ptr<const Film> film, vector<boost::shared_ptr<Content> > c)
 122         : Content (film, c)
 123 {
 124         video.reset (new VideoContent (this, c));
 125         audio.reset (new AudioContent (this, c));
 126         subtitle.reset (new SubtitleContent (this, c));
 127
 128         shared_ptr<FFmpegContent> ref = dynamic_pointer_cast<FFmpegContent> (c[0]);
 129         DCPOMATIC_ASSERT (ref);
 130
 131         for (size_t i = 0; i < c.size(); ++i) {
 132                 shared_ptr<FFmpegContent> fc = dynamic_pointer_cast<FFmpegContent> (c[i]);
 133                 if (fc->subtitle->use() && *(fc->_subtitle_stream.get()) != *(ref->_subtitle_stream.get())) {
 134                         throw JoinError (_("Content to be joined must use the same subtitle stream."));
 135                 }
 136         }
 137
 138         /* XXX: should probably check that more of the stuff below is the same in *this and ref */
 139
 140         _subtitle_streams = ref->subtitle_streams ();
 141         _subtitle_stream = ref->subtitle_stream ();
 142         _first_video = ref->_first_video;
 143         _filters = ref->_filters;
 144         _color_range = ref->_color_range;
 145         _color_primaries = ref->_color_primaries;
 146         _color_trc = ref->_color_trc;
 147         _colorspace = ref->_colorspace;
 148         _bits_per_pixel = ref->_bits_per_pixel;
 149 }
 150
 151 void
 152 FFmpegContent::as_xml (xmlpp::Node* node) const
 153 {
 154         node->add_child("Type")->add_child_text ("FFmpeg");
 155         Content::as_xml (node);
 156
 157         if (video) {
 158                 video->as_xml (node);
 159         }
 160
 161         if (audio) {
 162                 audio->as_xml (node);
 163
 164                 BOOST_FOREACH (AudioStreamPtr i, audio->streams ()) {
 165                         shared_ptr<FFmpegAudioStream> f = dynamic_pointer_cast<FFmpegAudioStream> (i);
 166                         DCPOMATIC_ASSERT (f);
 167                         f->as_xml (node->add_child("AudioStream"));
 168                 }
 169         }
 170
 171         if (subtitle) {
 172                 subtitle->as_xml (node);
 173         }
 174
 175         boost::mutex::scoped_lock lm (_mutex);
 176
 177         for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
 178                 xmlpp::Node* t = node->add_child("SubtitleStream");
 179                 if (_subtitle_stream && *i == _subtitle_stream) {
 180                         t->add_child("Selected")->add_child_text("1");
 181                 }
 182                 (*i)->as_xml (t);
 183         }
 184
 185         for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
 186                 node->add_child("Filter")->add_child_text ((*i)->id ());
 187         }
 188
 189         if (_first_video) {
 190                 node->add_child("FirstVideo")->add_child_text (raw_convert<string> (_first_video.get().get()));
 191         }
 192
 193         node->add_child("ColorRange")->add_child_text (raw_convert<string> (_color_range));
 194         node->add_child("ColorPrimaries")->add_child_text (raw_convert<string> (_color_primaries));
 195         node->add_child("ColorTransferCharacteristic")->add_child_text (raw_convert<string> (_color_trc));
 196         node->add_child("Colorspace")->add_child_text (raw_convert<string> (_colorspace));
 197         if (_bits_per_pixel) {
 198                 node->add_child("BitsPerPixel")->add_child_text (raw_convert<string> (_bits_per_pixel.get ()));
 199         }
 200 }
 201
 202 void
 203 FFmpegContent::examine (shared_ptr<Job> job)
 204 {
 205         job->set_progress_unknown ();
 206
 207         Content::examine (job);
 208
 209         shared_ptr<FFmpegExaminer> examiner (new FFmpegExaminer (shared_from_this (), job));
 210
 211         if (examiner->has_video ()) {
 212                 video.reset (new VideoContent (this));
 213                 video->take_from_examiner (examiner);
 214                 set_default_colour_conversion ();
 215         }
 216
 217         {
 218                 boost::mutex::scoped_lock lm (_mutex);
 219
 220                 if (examiner->has_video ()) {
 221                         _first_video = examiner->first_video ();
 222                         _color_range = examiner->color_range ();
 223                         _color_primaries = examiner->color_primaries ();
 224                         _color_trc = examiner->color_trc ();
 225                         _colorspace = examiner->colorspace ();
 226                         _bits_per_pixel = examiner->bits_per_pixel ();
 227                 }
 228
 229                 if (!examiner->audio_streams().empty ()) {
 230                         audio.reset (new AudioContent (this));
 231
 232                         BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, examiner->audio_streams ()) {
 233                                 audio->add_stream (i);
 234                         }
 235
 236                         AudioStreamPtr as = audio->streams().front();
 237                         AudioMapping m = as->mapping ();
 238                         film()->make_audio_mapping_default (m);
 239                         as->set_mapping (m);
 240                 }
 241
 242                 _subtitle_streams = examiner->subtitle_streams ();
 243                 if (!_subtitle_streams.empty ()) {
 244                         subtitle.reset (new SubtitleContent (this));
 245                         _subtitle_stream = _subtitle_streams.front ();
 246                 }
 247
 248         }
 249
 250         signal_changed (FFmpegContentProperty::SUBTITLE_STREAMS);
 251         signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
 252 }
 253
 254 string
 255 FFmpegContent::summary () const
 256 {
 257         if (video && audio) {
 258                 return String::compose (_("%1 [movie]"), path_summary ());
 259         } else if (video) {
 260                 return String::compose (_("%1 [video]"), path_summary ());
 261         } else if (audio) {
 262                 return String::compose (_("%1 [audio]"), path_summary ());
 263         }
 264
 265         return path_summary ();
 266 }
 267
 268 string
 269 FFmpegContent::technical_summary () const
 270 {
 271         string as = "";
 272         BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, ffmpeg_audio_streams ()) {
 273                 as += i->technical_summary () + " " ;
 274         }
 275
 276         if (as.empty ()) {
 277                 as = "none";
 278         }
 279
 280         string ss = "none";
 281         if (_subtitle_stream) {
 282                 ss = _subtitle_stream->technical_summary ();
 283         }
 284
 285         string filt = Filter::ffmpeg_string (_filters);
 286
 287         string s = Content::technical_summary ();
 288
 289         if (video) {
 290                 s += " - " + video->technical_summary ();
 291         }
 292
 293         if (audio) {
 294                 s += " - " + audio->technical_summary ();
 295         }
 296
 297         return s + String::compose (
 298                 "ffmpeg: audio %1 subtitle %2 filters %3", as, ss, filt
 299                 );
 300 }
 301
 302 void
 303 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
 304 {
 305         {
 306                 boost::mutex::scoped_lock lm (_mutex);
 307                 _subtitle_stream = s;
 308         }
 309
 310         signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
 311 }
 312
 313 bool
 314 operator== (FFmpegStream const & a, FFmpegStream const & b)
 315 {
 316         return a._id == b._id;
 317 }
 318
 319 bool
 320 operator!= (FFmpegStream const & a, FFmpegStream const & b)
 321 {
 322         return a._id != b._id;
 323 }
 324
 325 DCPTime
 326 FFmpegContent::full_length () const
 327 {
 328         FrameRateChange const frc (active_video_frame_rate (), film()->video_frame_rate ());
 329         if (video) {
 330                 return DCPTime::from_frames (llrint (video->length_after_3d_combine() * frc.factor()), film()->video_frame_rate());
 331         }
 332
 333         DCPOMATIC_ASSERT (audio);
 334         return DCPTime::from_frames (llrint (audio->stream()->length() / frc.speed_up), audio->stream()->frame_rate());
 335 }
 336
 337 void
 338 FFmpegContent::set_filters (vector<Filter const *> const & filters)
 339 {
 340         {
 341                 boost::mutex::scoped_lock lm (_mutex);
 342                 _filters = filters;
 343         }
 344
 345         signal_changed (FFmpegContentProperty::FILTERS);
 346 }
 347
 348 string
 349 FFmpegContent::identifier () const
 350 {
 351         SafeStringStream s;
 352
 353         s << Content::identifier();
 354
 355         if (video) {
 356                 s << "_" << video->identifier();
 357         }
 358
 359         if (subtitle) {
 360                 s << "_" << subtitle->identifier();
 361         }
 362
 363         boost::mutex::scoped_lock lm (_mutex);
 364
 365         if (_subtitle_stream) {
 366                 s << "_" << _subtitle_stream->identifier ();
 367         }
 368
 369         for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
 370                 s << "_" << (*i)->id ();
 371         }
 372
 373         return s.str ();
 374 }
 375
 376 list<ContentTimePeriod>
 377 FFmpegContent::image_subtitles_during (ContentTimePeriod period, bool starting) const
 378 {
 379         shared_ptr<FFmpegSubtitleStream> stream = subtitle_stream ();
 380         if (!stream) {
 381                 return list<ContentTimePeriod> ();
 382         }
 383
 384         return stream->image_subtitles_during (period, starting);
 385 }
 386
 387 list<ContentTimePeriod>
 388 FFmpegContent::text_subtitles_during (ContentTimePeriod period, bool starting) const
 389 {
 390         shared_ptr<FFmpegSubtitleStream> stream = subtitle_stream ();
 391         if (!stream) {
 392                 return list<ContentTimePeriod> ();
 393         }
 394
 395         return stream->text_subtitles_during (period, starting);
 396 }
 397
 398 void
 399 FFmpegContent::set_default_colour_conversion ()
 400 {
 401         DCPOMATIC_ASSERT (video);
 402
 403         dcp::Size const s = video->size ();
 404
 405         boost::mutex::scoped_lock lm (_mutex);
 406
 407         if (s.width < 1080) {
 408                 video->set_colour_conversion (PresetColourConversion::from_id ("rec601").conversion);
 409         } else {
 410                 video->set_colour_conversion (PresetColourConversion::from_id ("rec709").conversion);
 411         }
 412 }
 413
 414 void
 415 FFmpegContent::add_properties (list<UserProperty>& p) const
 416 {
 417         Content::add_properties (p);
 418
 419         if (video) {
 420                 video->add_properties (p);
 421
 422                 if (_bits_per_pixel) {
 423                         int const sub = 219 * pow (2, _bits_per_pixel.get() - 8);
 424                         int const total = pow (2, _bits_per_pixel.get());
 425
 426                         switch (_color_range) {
 427                         case AVCOL_RANGE_UNSPECIFIED:
 428                                 /// TRANSLATORS: this means that the range of pixel values used in this
 429                                 /// file is unknown (not specified in the file).
 430                                 p.push_back (UserProperty (_("Video"), _("Colour range"), _("Unspecified")));
 431                                 break;
 432                         case AVCOL_RANGE_MPEG:
 433                                 /// TRANSLATORS: this means that the range of pixel values used in this
 434                                 /// file is limited, so that not all possible values are valid.
 435                                 p.push_back (
 436                                         UserProperty (
 437                                                 _("Video"), _("Colour range"), String::compose (_("Limited (%1-%2)"), (total - sub) / 2, (total + sub) / 2)
 438                                                 )
 439                                         );
 440                                 break;
 441                         case AVCOL_RANGE_JPEG:
 442                                 /// TRANSLATORS: this means that the range of pixel values used in this
 443                                 /// file is full, so that all possible pixel values are valid.
 444                                 p.push_back (UserProperty (_("Video"), _("Colour range"), String::compose (_("Full (0-%1)"), total)));
 445                                 break;
 446                         default:
 447                                 DCPOMATIC_ASSERT (false);
 448                         }
 449                 } else {
 450                         switch (_color_range) {
 451                         case AVCOL_RANGE_UNSPECIFIED:
 452                                 /// TRANSLATORS: this means that the range of pixel values used in this
 453                                 /// file is unknown (not specified in the file).
 454                                 p.push_back (UserProperty (_("Video"), _("Colour range"), _("Unspecified")));
 455                                 break;
 456                         case AVCOL_RANGE_MPEG:
 457                                 /// TRANSLATORS: this means that the range of pixel values used in this
 458                                 /// file is limited, so that not all possible values are valid.
 459                                 p.push_back (UserProperty (_("Video"), _("Colour range"), _("Limited")));
 460                                 break;
 461                         case AVCOL_RANGE_JPEG:
 462                                 /// TRANSLATORS: this means that the range of pixel values used in this
 463                                 /// file is full, so that all possible pixel values are valid.
 464                                 p.push_back (UserProperty (_("Video"), _("Colour range"), _("Full")));
 465                                 break;
 466                         default:
 467                                 DCPOMATIC_ASSERT (false);
 468                         }
 469                 }
 470
 471                 char const * primaries[] = {
 472                         _("Unspecified"),
 473                         _("BT709"),
 474                         _("Unspecified"),
 475                         _("Unspecified"),
 476                         _("BT470M"),
 477                         _("BT470BG"),
 478                         _("SMPTE 170M (BT601)"),
 479                         _("SMPTE 240M"),
 480                         _("Film"),
 481                         _("BT2020"),
 482                         _("SMPTE ST 428-1 (CIE 1931 XYZ)")
 483                 };
 484
 485                 DCPOMATIC_ASSERT (AVCOL_PRI_NB <= 11);
 486                 p.push_back (UserProperty (_("Video"), _("Colour primaries"), primaries[_color_primaries]));
 487
 488                 char const * transfers[] = {
 489                         _("Unspecified"),
 490                         _("BT709"),
 491                         _("Unspecified"),
 492                         _("Unspecified"),
 493                         _("Gamma 22 (BT470M)"),
 494                         _("Gamma 28 (BT470BG)"),
 495                         _("SMPTE 170M (BT601)"),
 496                         _("SMPTE 240M"),
 497                         _("Linear"),
 498                         _("Logarithmic (100:1 range)"),
 499                         _("Logarithmic (316:1 range)"),
 500                         _("IEC61966-2-4"),
 501                         _("BT1361 extended colour gamut"),
 502                         _("IEC61966-2-1 (sRGB or sYCC)"),
 503                         _("BT2020 for a 10-bit system"),
 504                         _("BT2020 for a 12-bit system"),
 505                         _("SMPTE ST 2084 for 10, 12, 14 and 16 bit systems"),
 506                         _("SMPTE ST 428-1")
 507                 };
 508
 509                 DCPOMATIC_ASSERT (AVCOL_TRC_NB <= 18);
 510                 p.push_back (UserProperty (_("Video"), _("Colour transfer characteristic"), transfers[_color_trc]));
 511
 512                 char const * spaces[] = {
 513                         _("RGB / sRGB (IEC61966-2-1)"),
 514                         _("BT709"),
 515                         _("Unspecified"),
 516                         _("Unspecified"),
 517                         _("FCC"),
 518                         _("BT470BG (BT601-6)"),
 519                         _("SMPTE 170M (BT601-6)"),
 520                         _("SMPTE 240M"),
 521                         _("YCOCG"),
 522                         _("BT2020 non-constant luminance"),
 523                         _("BT2020 constant luminance"),
 524                 };
 525
 526                 DCPOMATIC_ASSERT (AVCOL_SPC_NB == 11);
 527                 p.push_back (UserProperty (_("Video"), _("Colourspace"), spaces[_colorspace]));
 528
 529                 if (_bits_per_pixel) {
 530                         p.push_back (UserProperty (_("Video"), _("Bits per pixel"), raw_convert<string> (_bits_per_pixel.get ())));
 531                 }
 532         }
 533
 534         if (audio) {
 535                 audio->add_properties (p);
 536         }
 537 }
 538
 539 /** Our subtitle streams have colour maps, which can be changed, but
 540  *  they have no way of signalling that change.  As a hack, we have this
 541  *  method which callers can use when they've modified one of our subtitle
 542  *  streams.
 543  */
 544 void
 545 FFmpegContent::signal_subtitle_stream_changed ()
 546 {
 547         signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
 548 }
 549
 550 vector<shared_ptr<FFmpegAudioStream> >
 551 FFmpegContent::ffmpeg_audio_streams () const
 552 {
 553         vector<shared_ptr<FFmpegAudioStream> > fa;
 554
 555         if (audio) {
 556                 BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
 557                         fa.push_back (dynamic_pointer_cast<FFmpegAudioStream> (i));
 558                 }
 559         }
 560
 561         return fa;
 562 }