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