src/wx/film_viewer.cc

   1 /*
   2     Copyright (C) 2012-2021 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
  22 /** @file  src/film_viewer.cc
  23  *  @brief A wx widget to view a preview of a Film.
  24  */
  25
  26
  27 #include "closed_captions_dialog.h"
  28 #include "film_viewer.h"
  29 #include "gl_video_view.h"
  30 #include "nag_dialog.h"
  31 #include "playhead_to_frame_dialog.h"
  32 #include "playhead_to_timecode_dialog.h"
  33 #include "sign_language_dialog.h"
  34 #include "simple_video_view.h"
  35 #include "wx_util.h"
  36 #include "lib/butler.h"
  37 #include "lib/compose.hpp"
  38 #include "lib/config.h"
  39 #include "lib/dcpomatic_log.h"
  40 #include "lib/examine_content_job.h"
  41 #include "lib/exceptions.h"
  42 #include "lib/film.h"
  43 #include "lib/filter.h"
  44 #include "lib/image.h"
  45 #include "lib/job_manager.h"
  46 #include "lib/log.h"
  47 #include "lib/player.h"
  48 #include "lib/player_video.h"
  49 #include "lib/ratio.h"
  50 #include "lib/text_content.h"
  51 #include "lib/timer.h"
  52 #include "lib/util.h"
  53 #include "lib/video_content.h"
  54 #include "lib/video_decoder.h"
  55 #include <dcp/exceptions.h>
  56 #include <dcp/warnings.h>
  57 extern "C" {
  58 #include <libavutil/pixfmt.h>
  59 }
  60 LIBDCP_DISABLE_WARNINGS
  61 #include <wx/tglbtn.h>
  62 LIBDCP_ENABLE_WARNINGS
  63 #include <iomanip>
  64
  65
  66 using std::bad_alloc;
  67 using std::dynamic_pointer_cast;
  68 using std::make_shared;
  69 using std::max;
  70 using std::shared_ptr;
  71 using std::string;
  72 using std::vector;
  73 using boost::optional;
  74 #if BOOST_VERSION >= 106100
  75 using namespace boost::placeholders;
  76 #endif
  77 using dcp::Size;
  78 using namespace dcpomatic;
  79
  80
  81 static
  82 int
  83 rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data)
  84 {
  85         return reinterpret_cast<FilmViewer*>(data)->audio_callback (out, frames);
  86 }
  87
  88
  89 FilmViewer::FilmViewer (wxWindow* p)
  90         : _audio (DCPOMATIC_RTAUDIO_API)
  91         , _closed_captions_dialog (new ClosedCaptionsDialog(p, this))
  92         , _sign_language_dialog(new SignLanguageDialog(p))
  93 {
  94 #if wxCHECK_VERSION(3, 1, 0)
  95         switch (Config::instance()->video_view_type()) {
  96         case Config::VIDEO_VIEW_OPENGL:
  97                 _video_view = std::make_shared<GLVideoView>(this, p);
  98                 break;
  99         case Config::VIDEO_VIEW_SIMPLE:
 100                 _video_view = std::make_shared<SimpleVideoView>(this, p);
 101                 break;
 102         }
 103 #else
 104         _video_view = std::make_shared<SimpleVideoView>(this, p);
 105 #endif
 106
 107         _video_view->Sized.connect (boost::bind(&FilmViewer::video_view_sized, this));
 108         _video_view->TooManyDropped.connect (boost::bind(boost::ref(TooManyDropped)));
 109
 110         set_film (shared_ptr<Film>());
 111
 112         _config_changed_connection = Config::instance()->Changed.connect(bind(&FilmViewer::config_changed, this, _1));
 113         config_changed (Config::SOUND_OUTPUT);
 114 }
 115
 116
 117 FilmViewer::~FilmViewer ()
 118 {
 119         stop ();
 120 }
 121
 122
 123 /** Ask for ::idle_handler() to be called next time we are idle */
 124 void
 125 FilmViewer::request_idle_display_next_frame ()
 126 {
 127         if (_idle_get) {
 128                 return;
 129         }
 130
 131         _idle_get = true;
 132         DCPOMATIC_ASSERT (signal_manager);
 133         signal_manager->when_idle (boost::bind(&FilmViewer::idle_handler, this));
 134 }
 135
 136
 137 void
 138 FilmViewer::idle_handler ()
 139 {
 140         if (!_idle_get) {
 141                 return;
 142         }
 143
 144         if (_video_view->display_next_frame(true) == VideoView::AGAIN) {
 145                 /* get() could not complete quickly so we'll try again later */
 146                 signal_manager->when_idle (boost::bind(&FilmViewer::idle_handler, this));
 147         } else {
 148                 _idle_get = false;
 149         }
 150 }
 151
 152
 153 void
 154 FilmViewer::set_film (shared_ptr<Film> film)
 155 {
 156         if (_film == film) {
 157                 return;
 158         }
 159
 160         _film = film;
 161
 162         _video_view->clear ();
 163         _closed_captions_dialog->clear ();
 164
 165         destroy_butler();
 166
 167         if (!_film) {
 168                 _player = boost::none;
 169                 resume();
 170                 _video_view->update ();
 171                 return;
 172         }
 173
 174         try {
 175                 _player.emplace(_film, _optimise_for_j2k ? Image::Alignment::COMPACT : Image::Alignment::PADDED);
 176                 _player->set_fast ();
 177                 if (_dcp_decode_reduction) {
 178                         _player->set_dcp_decode_reduction (_dcp_decode_reduction);
 179                 }
 180         } catch (bad_alloc &) {
 181                 error_dialog (_video_view->get(), _("There is not enough free memory to do that."));
 182                 _film.reset ();
 183                 resume();
 184                 return;
 185         }
 186
 187         _player->set_always_burn_open_subtitles ();
 188         _player->set_play_referenced ();
 189
 190         _film->Change.connect (boost::bind (&FilmViewer::film_change, this, _1, _2));
 191         _film->LengthChange.connect (boost::bind(&FilmViewer::film_length_change, this));
 192         _player->Change.connect (boost::bind (&FilmViewer::player_change, this, _1, _2, _3));
 193
 194         film_change (ChangeType::DONE, Film::Property::VIDEO_FRAME_RATE);
 195         film_change (ChangeType::DONE, Film::Property::THREE_D);
 196         film_length_change ();
 197
 198         /* Keep about 1 second's worth of history samples */
 199         _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
 200
 201         _closed_captions_dialog->update_tracks (_film);
 202
 203         create_butler();
 204
 205         calculate_sizes ();
 206         slow_refresh ();
 207 }
 208
 209
 210 void
 211 FilmViewer::destroy_butler()
 212 {
 213         suspend ();
 214         _butler.reset ();
 215 }
 216
 217
 218 void
 219 FilmViewer::destroy_and_maybe_create_butler()
 220 {
 221         destroy_butler();
 222
 223         if (!_film) {
 224                 resume ();
 225                 return;
 226         }
 227
 228         create_butler();
 229 }
 230
 231
 232 void
 233 FilmViewer::create_butler()
 234 {
 235 #if wxCHECK_VERSION(3, 1, 0)
 236         auto const j2k_gl_optimised = dynamic_pointer_cast<GLVideoView>(_video_view) && _optimise_for_j2k;
 237 #else
 238         auto const j2k_gl_optimised = false;
 239 #endif
 240
 241         DCPOMATIC_ASSERT(_player);
 242
 243         _butler = std::make_shared<Butler>(
 244                 _film,
 245                 *_player,
 246                 Config::instance()->audio_mapping(_audio_channels),
 247                 _audio_channels,
 248                 boost::bind(&PlayerVideo::force, AV_PIX_FMT_RGB24),
 249                 VideoRange::FULL,
 250                 j2k_gl_optimised ? Image::Alignment::COMPACT : Image::Alignment::PADDED,
 251                 true,
 252                 j2k_gl_optimised,
 253                 (Config::instance()->sound() && _audio.isStreamOpen()) ? Butler::Audio::ENABLED : Butler::Audio::DISABLED
 254                 );
 255
 256         _closed_captions_dialog->set_butler (_butler);
 257
 258         resume ();
 259 }
 260
 261
 262 void
 263 FilmViewer::set_outline_content (bool o)
 264 {
 265         _outline_content = o;
 266         _video_view->update ();
 267 }
 268
 269
 270 void
 271 FilmViewer::set_outline_subtitles (optional<dcpomatic::Rect<double>> rect)
 272 {
 273         _outline_subtitles = rect;
 274         _video_view->update ();
 275 }
 276
 277
 278 void
 279 FilmViewer::set_eyes (Eyes e)
 280 {
 281         _video_view->set_eyes (e);
 282         slow_refresh ();
 283 }
 284
 285
 286 void
 287 FilmViewer::video_view_sized ()
 288 {
 289         calculate_sizes ();
 290         if (!quick_refresh()) {
 291                 slow_refresh ();
 292         }
 293 }
 294
 295
 296 void
 297 FilmViewer::calculate_sizes ()
 298 {
 299         if (!_film || !_player) {
 300                 return;
 301         }
 302
 303         auto const container = _film->container ();
 304
 305         auto const scale = dpi_scale_factor (_video_view->get());
 306         int const video_view_width = std::round(_video_view->get()->GetSize().x * scale);
 307         int const video_view_height = std::round(_video_view->get()->GetSize().y * scale);
 308
 309         auto const view_ratio = float(video_view_width) / video_view_height;
 310         auto const film_ratio = container ? container->ratio () : 1.78;
 311
 312         dcp::Size out_size;
 313         if (view_ratio < film_ratio) {
 314                 /* panel is less widscreen than the film; clamp width */
 315                 out_size.width = video_view_width;
 316                 out_size.height = lrintf (out_size.width / film_ratio);
 317         } else {
 318                 /* panel is more widescreen than the film; clamp height */
 319                 out_size.height = video_view_height;
 320                 out_size.width = lrintf (out_size.height * film_ratio);
 321         }
 322
 323         /* Catch silly values */
 324         out_size.width = max (64, out_size.width);
 325         out_size.height = max (64, out_size.height);
 326
 327         /* Make sure the video container sizes are always a multiple of 2 so that
 328          * we don't get gaps with subsampled sources (e.g. YUV420)
 329          */
 330         if (out_size.width % 2) {
 331                 out_size.width++;
 332         }
 333         if (out_size.height % 2) {
 334                 out_size.height++;
 335         }
 336
 337         _player->set_video_container_size (out_size);
 338 }
 339
 340
 341 void
 342 FilmViewer::suspend ()
 343 {
 344         ++_suspended;
 345         if (_audio.isStreamRunning()) {
 346                 _audio.abortStream();
 347         }
 348 }
 349
 350
 351 void
 352 FilmViewer::start_audio_stream_if_open ()
 353 {
 354         if (_audio.isStreamOpen()) {
 355                 _audio.setStreamTime (_video_view->position().seconds());
 356                 try {
 357                         _audio.startStream ();
 358                 } catch (RtAudioError& e) {
 359                         _audio_channels = 0;
 360                         error_dialog (
 361                                 _video_view->get(),
 362                                 _("There was a problem starting audio playback.  Please try another audio output device in Preferences."), std_to_wx(e.what())
 363                                 );
 364                 }
 365         }
 366 }
 367
 368
 369 void
 370 FilmViewer::resume ()
 371 {
 372         DCPOMATIC_ASSERT (_suspended > 0);
 373         --_suspended;
 374         if (_playing && !_suspended) {
 375                 start_audio_stream_if_open ();
 376                 _video_view->start ();
 377         }
 378 }
 379
 380
 381 void
 382 FilmViewer::start ()
 383 {
 384         if (!_film) {
 385                 return;
 386         }
 387
 388         auto v = PlaybackPermitted ();
 389         if (v && !*v) {
 390                 /* Computer says no */
 391                 return;
 392         }
 393
 394         /* We are about to set up the audio stream from the position of the video view.
 395            If there is `lazy' seek in progress we need to wait for it to go through so that
 396            _video_view->position() gives us a sensible answer.
 397          */
 398         while (_idle_get) {
 399                 idle_handler ();
 400         }
 401
 402         /* Take the video view's idea of position as our `playhead' and start the
 403            audio stream (which is the timing reference) there.
 404          */
 405         start_audio_stream_if_open ();
 406
 407         _playing = true;
 408         /* Calling start() below may directly result in Stopped being emitted, and if that
 409          * happens we want it to come after the Started signal, so do that first.
 410          */
 411         Started ();
 412         _video_view->start ();
 413 }
 414
 415
 416 bool
 417 FilmViewer::stop ()
 418 {
 419         if (_audio.isStreamRunning()) {
 420                 /* stop stream and discard any remaining queued samples */
 421                 _audio.abortStream ();
 422         }
 423
 424         if (!_playing) {
 425                 return false;
 426         }
 427
 428         _playing = false;
 429         _video_view->stop ();
 430         Stopped ();
 431
 432         _video_view->rethrow ();
 433         return true;
 434 }
 435
 436
 437 void
 438 FilmViewer::player_change (ChangeType type, int property, bool frequent)
 439 {
 440         if (type != ChangeType::DONE || frequent) {
 441                 return;
 442         }
 443
 444         if (_coalesce_player_changes) {
 445                 _pending_player_changes.push_back (property);
 446                 return;
 447         }
 448
 449         player_change ({property});
 450 }
 451
 452
 453 void
 454 FilmViewer::player_change (vector<int> properties)
 455 {
 456         calculate_sizes ();
 457
 458         bool try_quick_refresh = false;
 459         bool update_ccap_tracks = false;
 460
 461         for (auto i: properties) {
 462                 if (
 463                         i == VideoContentProperty::CROP ||
 464                         i == VideoContentProperty::CUSTOM_RATIO ||
 465                         i == VideoContentProperty::CUSTOM_SIZE ||
 466                         i == VideoContentProperty::FADE_IN ||
 467                         i == VideoContentProperty::FADE_OUT ||
 468                         i == VideoContentProperty::COLOUR_CONVERSION ||
 469                         i == PlayerProperty::VIDEO_CONTAINER_SIZE ||
 470                         i == PlayerProperty::FILM_CONTAINER
 471                    ) {
 472                         try_quick_refresh = true;
 473                 }
 474
 475                 if (i == TextContentProperty::USE || i == TextContentProperty::TYPE || i == TextContentProperty::DCP_TRACK) {
 476                         update_ccap_tracks = true;
 477                 }
 478         }
 479
 480         if (!try_quick_refresh || !quick_refresh()) {
 481                 slow_refresh ();
 482         }
 483
 484         if (update_ccap_tracks) {
 485                 _closed_captions_dialog->update_tracks (_film);
 486         }
 487 }
 488
 489
 490 void
 491 FilmViewer::film_change (ChangeType type, Film::Property p)
 492 {
 493         if (type != ChangeType::DONE) {
 494                 return;
 495         }
 496
 497         if (p == Film::Property::AUDIO_CHANNELS) {
 498                 destroy_and_maybe_create_butler();
 499         } else if (p == Film::Property::VIDEO_FRAME_RATE) {
 500                 _video_view->set_video_frame_rate (_film->video_frame_rate());
 501         } else if (p == Film::Property::THREE_D) {
 502                 _video_view->set_three_d (_film->three_d());
 503         } else if (p == Film::Property::CONTENT) {
 504                 _closed_captions_dialog->update_tracks (_film);
 505         }
 506 }
 507
 508
 509 void
 510 FilmViewer::film_length_change ()
 511 {
 512         _video_view->set_length (_film->length());
 513 }
 514
 515
 516 /** Re-get the current frame slowly by seeking */
 517 void
 518 FilmViewer::slow_refresh ()
 519 {
 520         seek (_video_view->position(), true);
 521 }
 522
 523
 524 /** Try to re-get the current frame quickly by resetting the metadata
 525  *  in the PlayerVideo that we used last time.
 526  *  @return true if this was possible, false if not.
 527  */
 528 bool
 529 FilmViewer::quick_refresh ()
 530 {
 531         if (!_video_view || !_film || !_player) {
 532                 return true;
 533         }
 534         return _video_view->reset_metadata (_film, _player->video_container_size());
 535 }
 536
 537
 538 void
 539 FilmViewer::seek (shared_ptr<Content> content, ContentTime t, bool accurate)
 540 {
 541         DCPOMATIC_ASSERT(_player);
 542         auto dt = _player->content_time_to_dcp (content, t);
 543         if (dt) {
 544                 seek (*dt, accurate);
 545         }
 546 }
 547
 548
 549 void
 550 FilmViewer::set_coalesce_player_changes (bool c)
 551 {
 552         _coalesce_player_changes = c;
 553
 554         if (!c) {
 555                 player_change (_pending_player_changes);
 556                 _pending_player_changes.clear ();
 557         }
 558 }
 559
 560
 561 void
 562 FilmViewer::seek (DCPTime t, bool accurate)
 563 {
 564         if (!_butler) {
 565                 return;
 566         }
 567
 568         if (t < DCPTime()) {
 569                 t = DCPTime ();
 570         }
 571
 572         if (t >= _film->length()) {
 573                 t = _film->length() - one_video_frame();
 574         }
 575
 576         suspend ();
 577
 578         _closed_captions_dialog->clear ();
 579         _butler->seek (t, accurate);
 580
 581         if (!_playing) {
 582                 /* We're not playing, so let the GUI thread get on and
 583                    come back later to get the next frame after the seek.
 584                 */
 585                 request_idle_display_next_frame ();
 586         } else {
 587                 /* We're going to start playing again straight away
 588                    so wait for the seek to finish.
 589                 */
 590                 while (_video_view->display_next_frame(false) == VideoView::AGAIN) {}
 591         }
 592
 593         resume ();
 594 }
 595
 596
 597 void
 598 FilmViewer::config_changed (Config::Property p)
 599 {
 600         if (p == Config::AUDIO_MAPPING) {
 601                 destroy_and_maybe_create_butler();
 602                 return;
 603         }
 604
 605         if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
 606                 return;
 607         }
 608
 609         if (_audio.isStreamOpen ()) {
 610                 _audio.closeStream ();
 611         }
 612
 613         if (Config::instance()->sound() && _audio.getDeviceCount() > 0) {
 614                 unsigned int st = 0;
 615                 if (Config::instance()->sound_output()) {
 616                         while (st < _audio.getDeviceCount()) {
 617                                 try {
 618                                         if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
 619                                                 break;
 620                                         }
 621                                 } catch (RtAudioError&) {
 622                                         /* Something went wrong with that device so we don't want to use it anyway */
 623                                 }
 624                                 ++st;
 625                         }
 626                         if (st == _audio.getDeviceCount()) {
 627                                 st = _audio.getDefaultOutputDevice();
 628                         }
 629                 } else {
 630                         st = _audio.getDefaultOutputDevice();
 631                 }
 632
 633                 try {
 634                         _audio_channels = _audio.getDeviceInfo(st).outputChannels;
 635                         RtAudio::StreamParameters sp;
 636                         sp.deviceId = st;
 637                         sp.nChannels = _audio_channels;
 638                         sp.firstChannel = 0;
 639                         _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
 640                 } catch (RtAudioError& e) {
 641                         _audio_channels = 0;
 642                         error_dialog (
 643                                 _video_view->get(),
 644                                 _("Could not set up audio output.  There will be no audio during the preview."), std_to_wx(e.what())
 645                                 );
 646                 }
 647                 destroy_and_maybe_create_butler();
 648
 649         } else {
 650                 _audio_channels = 0;
 651                 destroy_and_maybe_create_butler();
 652         }
 653 }
 654
 655
 656 DCPTime
 657 FilmViewer::uncorrected_time () const
 658 {
 659         if (_audio.isStreamRunning()) {
 660                 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime());
 661         }
 662
 663         return _video_view->position();
 664 }
 665
 666
 667 optional<DCPTime>
 668 FilmViewer::audio_time () const
 669 {
 670         if (!_audio.isStreamRunning()) {
 671                 return {};
 672         }
 673
 674         return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
 675                 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
 676 }
 677
 678
 679 DCPTime
 680 FilmViewer::time () const
 681 {
 682         return audio_time().get_value_or(_video_view->position());
 683 }
 684
 685
 686 int
 687 FilmViewer::audio_callback (void* out_p, unsigned int frames)
 688 {
 689         while (true) {
 690                 auto t = _butler->get_audio (Butler::Behaviour::NON_BLOCKING, reinterpret_cast<float*> (out_p), frames);
 691                 if (!t || DCPTime(uncorrected_time() - *t) < one_video_frame()) {
 692                         /* There was an underrun or this audio is on time; carry on */
 693                         break;
 694                 }
 695                 /* The audio we just got was (very) late; drop it and get some more. */
 696         }
 697
 698         boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
 699         if (lm) {
 700                 _latency_history.push_back (_audio.getStreamLatency ());
 701                 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
 702                         _latency_history.pop_front ();
 703                 }
 704         }
 705
 706         return 0;
 707 }
 708
 709
 710 Frame
 711 FilmViewer::average_latency () const
 712 {
 713         boost::mutex::scoped_lock lm (_latency_history_mutex);
 714         if (_latency_history.empty()) {
 715                 return 0;
 716         }
 717
 718         Frame total = 0;
 719         for (auto i: _latency_history) {
 720                 total += i;
 721         }
 722
 723         return total / _latency_history.size();
 724 }
 725
 726
 727 void
 728 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
 729 {
 730         _dcp_decode_reduction = reduction;
 731         if (_player) {
 732                 _player->set_dcp_decode_reduction (reduction);
 733         }
 734 }
 735
 736
 737 optional<int>
 738 FilmViewer::dcp_decode_reduction () const
 739 {
 740         return _dcp_decode_reduction;
 741 }
 742
 743
 744 optional<ContentTime>
 745 FilmViewer::position_in_content (shared_ptr<const Content> content) const
 746 {
 747         DCPOMATIC_ASSERT(_player);
 748         return _player->dcp_to_content_time (content, position());
 749 }
 750
 751
 752 DCPTime
 753 FilmViewer::one_video_frame () const
 754 {
 755         return DCPTime::from_frames (1, _film ? _film->video_frame_rate() : 24);
 756 }
 757
 758
 759 /** Open a dialog box showing our film's closed captions */
 760 void
 761 FilmViewer::show_closed_captions ()
 762 {
 763         _closed_captions_dialog->Show();
 764 }
 765
 766
 767 void
 768 FilmViewer::show_sign_language()
 769 {
 770         _sign_language_dialog->Show();
 771 }
 772
 773
 774 void
 775 FilmViewer::seek_by (DCPTime by, bool accurate)
 776 {
 777         seek (_video_view->position() + by, accurate);
 778 }
 779
 780
 781 void
 782 FilmViewer::set_pad_black (bool p)
 783 {
 784         _pad_black = p;
 785 }
 786
 787
 788 /** Called when a player has finished the current film.
 789  *  May be called from a non-UI thread.
 790  */
 791 void
 792 FilmViewer::finished ()
 793 {
 794         emit (boost::bind(&FilmViewer::ui_finished, this));
 795 }
 796
 797
 798 /** Called by finished() in the UI thread */
 799 void
 800 FilmViewer::ui_finished ()
 801 {
 802         stop ();
 803         Finished ();
 804 }
 805
 806
 807 int
 808 FilmViewer::dropped () const
 809 {
 810         return _video_view->dropped ();
 811 }
 812
 813
 814 int
 815 FilmViewer::errored () const
 816 {
 817         return _video_view->errored ();
 818 }
 819
 820
 821 int
 822 FilmViewer::gets () const
 823 {
 824         return _video_view->gets ();
 825 }
 826
 827
 828 void
 829 FilmViewer::image_changed (shared_ptr<PlayerVideo> pv)
 830 {
 831         emit (boost::bind(boost::ref(ImageChanged), pv));
 832 }
 833
 834
 835 void
 836 FilmViewer::set_optimise_for_j2k (bool o)
 837 {
 838         _optimise_for_j2k = o;
 839         _video_view->set_optimise_for_j2k (o);
 840 }
 841
 842
 843 void
 844 FilmViewer::set_crop_guess (dcpomatic::Rect<float> crop)
 845 {
 846         if (crop != _crop_guess) {
 847                 _crop_guess = crop;
 848                 _video_view->update ();
 849         }
 850 }
 851
 852
 853 void
 854 FilmViewer::unset_crop_guess ()
 855 {
 856         _crop_guess = boost::none;
 857         _video_view->update ();
 858 }
 859