src/wx/video_panel.cc

   1 /*
   2     Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "filter_dialog.h"
  22 #include "video_panel.h"
  23 #include "wx_util.h"
  24 #include "content_colour_conversion_dialog.h"
  25 #include "content_widget.h"
  26 #include "content_panel.h"
  27 #include "static_text.h"
  28 #include "check_box.h"
  29 #include "dcpomatic_button.h"
  30 #include "lib/filter.h"
  31 #include "lib/ffmpeg_content.h"
  32 #include "lib/colour_conversion.h"
  33 #include "lib/config.h"
  34 #include "lib/util.h"
  35 #include "lib/ratio.h"
  36 #include "lib/frame_rate_change.h"
  37 #include "lib/dcp_content.h"
  38 #include "lib/video_content.h"
  39 #include <wx/spinctrl.h>
  40 #include <boost/foreach.hpp>
  41 #include <boost/unordered_set.hpp>
  42 #include <boost/functional/hash.hpp>
  43 #include <set>
  44 #include <iostream>
  45
  46 using std::vector;
  47 using std::string;
  48 using std::pair;
  49 using std::cout;
  50 using std::list;
  51 using std::set;
  52 using boost::shared_ptr;
  53 using boost::dynamic_pointer_cast;
  54 using boost::bind;
  55 using boost::optional;
  56 #if BOOST_VERSION >= 106100
  57 using namespace boost::placeholders;
  58 #endif
  59
  60 static VideoContentScale
  61 index_to_scale (int n)
  62 {
  63         vector<VideoContentScale> scales = VideoContentScale::all ();
  64         DCPOMATIC_ASSERT (n >= 0);
  65         DCPOMATIC_ASSERT (n < int (scales.size ()));
  66         return scales[n];
  67 }
  68
  69 static int
  70 scale_to_index (VideoContentScale scale)
  71 {
  72         vector<VideoContentScale> scales = VideoContentScale::all ();
  73         for (size_t i = 0; i < scales.size(); ++i) {
  74                 if (scales[i] == scale) {
  75                         return i;
  76                 }
  77         }
  78
  79         DCPOMATIC_ASSERT (false);
  80 }
  81
  82 VideoPanel::VideoPanel (ContentPanel* p)
  83         : ContentSubPanel (p, _("Video"))
  84 {
  85         _reference = new CheckBox (this, _("Use this DCP's video as OV and make VF"));
  86         _reference_note = new StaticText (this, wxT(""));
  87         _reference_note->Wrap (200);
  88         wxFont font = _reference_note->GetFont();
  89         font.SetStyle(wxFONTSTYLE_ITALIC);
  90         font.SetPointSize(font.GetPointSize() - 1);
  91         _reference_note->SetFont(font);
  92
  93         _type_label = create_label (this, _("Type"), true);
  94         _frame_type = new ContentChoice<VideoContent, VideoFrameType> (
  95                 this,
  96                 new wxChoice (this, wxID_ANY),
  97                 VideoContentProperty::FRAME_TYPE,
  98                 &Content::video,
  99                 boost::mem_fn (&VideoContent::frame_type),
 100                 boost::mem_fn (&VideoContent::set_frame_type),
 101                 &caster<int, VideoFrameType>,
 102                 &caster<VideoFrameType, int>
 103                 );
 104
 105         _left_crop_label = create_label (this, _("Left crop"), true);
 106         _left_crop = new ContentSpinCtrl<VideoContent> (
 107                 this,
 108                 new wxSpinCtrl (this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize (64, -1)),
 109                 VideoContentProperty::CROP,
 110                 &Content::video,
 111                 boost::mem_fn (&VideoContent::left_crop),
 112                 boost::mem_fn (&VideoContent::set_left_crop)
 113                 );
 114
 115         _right_crop_label = create_label (this, _("Right crop"), true);
 116         _right_crop = new ContentSpinCtrl<VideoContent> (
 117                 this,
 118                 new wxSpinCtrl (this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize (64, -1)),
 119                 VideoContentProperty::CROP,
 120                 &Content::video,
 121                 boost::mem_fn (&VideoContent::right_crop),
 122                 boost::mem_fn (&VideoContent::set_right_crop)
 123                 );
 124
 125         _top_crop_label = create_label (this, _("Top crop"), true);
 126         _top_crop = new ContentSpinCtrl<VideoContent> (
 127                 this,
 128                 new wxSpinCtrl (this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize (64, -1)),
 129                 VideoContentProperty::CROP,
 130                 &Content::video,
 131                 boost::mem_fn (&VideoContent::top_crop),
 132                 boost::mem_fn (&VideoContent::set_top_crop)
 133                 );
 134
 135         _bottom_crop_label = create_label (this, _("Bottom crop"), true);
 136         _bottom_crop = new ContentSpinCtrl<VideoContent> (
 137                 this,
 138                 new wxSpinCtrl (this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize (64, -1)),
 139                 VideoContentProperty::CROP,
 140                 &Content::video,
 141                 boost::mem_fn (&VideoContent::bottom_crop),
 142                 boost::mem_fn (&VideoContent::set_bottom_crop)
 143                 );
 144
 145         _fade_in_label = create_label (this, _("Fade in"), true);
 146         _fade_in = new Timecode<ContentTime> (this);
 147
 148         _fade_out_label = create_label (this, _("Fade out"), true);
 149         _fade_out = new Timecode<ContentTime> (this);
 150
 151         _scale_to_label = create_label (this, _("Scale to"), true);
 152         _scale = new ContentChoice<VideoContent, VideoContentScale> (
 153                 this,
 154                 new wxChoice (this, wxID_ANY),
 155                 VideoContentProperty::SCALE,
 156                 &Content::video,
 157                 boost::mem_fn (&VideoContent::scale),
 158                 boost::mem_fn (&VideoContent::set_scale),
 159                 &index_to_scale,
 160                 &scale_to_index
 161                 );
 162
 163         wxClientDC dc (this);
 164         wxSize size = dc.GetTextExtent (wxT ("A quite long name"));
 165         size.SetHeight (-1);
 166
 167         _filters_label = create_label (this, _("Filters"), true);
 168         _filters = new StaticText (this, _("None"), wxDefaultPosition, size);
 169         _filters_button = new Button (this, _("Edit..."));
 170
 171         _colour_conversion_label = create_label (this, _("Colour conversion"), true);
 172         _colour_conversion = new wxChoice (this, wxID_ANY, wxDefaultPosition, size);
 173         _colour_conversion->Append (_("None"));
 174         BOOST_FOREACH (PresetColourConversion const & i, PresetColourConversion::all()) {
 175                 _colour_conversion->Append (std_to_wx (i.name));
 176         }
 177
 178         /// TRANSLATORS: translate the word "Custom" here; do not include the "Colour|" prefix
 179         _colour_conversion->Append (S_("Colour|Custom"));
 180         _edit_colour_conversion_button = new Button (this, _("Edit..."));
 181
 182         _description = new StaticText (this, wxT ("\n \n \n \n \n"), wxDefaultPosition, wxDefaultSize);
 183         _description->SetFont(font);
 184
 185         _left_crop->wrapped()->SetRange (0, 4096);
 186         _top_crop->wrapped()->SetRange (0, 4096);
 187         _right_crop->wrapped()->SetRange (0, 4096);
 188         _bottom_crop->wrapped()->SetRange (0, 4096);
 189
 190         _scale->wrapped()->Clear ();
 191         BOOST_FOREACH (VideoContentScale const & i, VideoContentScale::all ()) {
 192                 _scale->wrapped()->Append (std_to_wx (i.name ()));
 193         }
 194
 195         _frame_type->wrapped()->Append (_("2D"));
 196         _frame_type->wrapped()->Append (_("3D"));
 197         _frame_type->wrapped()->Append (_("3D left/right"));
 198         _frame_type->wrapped()->Append (_("3D top/bottom"));
 199         _frame_type->wrapped()->Append (_("3D alternate"));
 200         _frame_type->wrapped()->Append (_("3D left only"));
 201         _frame_type->wrapped()->Append (_("3D right only"));
 202
 203         content_selection_changed ();
 204
 205         _fade_in->Changed.connect (boost::bind (&VideoPanel::fade_in_changed, this));
 206         _fade_out->Changed.connect (boost::bind (&VideoPanel::fade_out_changed, this));
 207
 208         _reference->Bind                     (wxEVT_CHECKBOX, boost::bind (&VideoPanel::reference_clicked, this));
 209         _filters_button->Bind                (wxEVT_BUTTON,   boost::bind (&VideoPanel::edit_filters_clicked, this));
 210         _colour_conversion->Bind             (wxEVT_CHOICE,   boost::bind (&VideoPanel::colour_conversion_changed, this));
 211         _edit_colour_conversion_button->Bind (wxEVT_BUTTON,   boost::bind (&VideoPanel::edit_colour_conversion_clicked, this));
 212
 213         add_to_grid ();
 214 }
 215
 216 void
 217 VideoPanel::add_to_grid ()
 218 {
 219         bool const full = Config::instance()->interface_complexity() == Config::INTERFACE_FULL;
 220
 221         int r = 0;
 222
 223         _reference->Show (full);
 224         _reference_note->Show (full);
 225
 226         if (full) {
 227                 wxBoxSizer* reference_sizer = new wxBoxSizer (wxVERTICAL);
 228                 reference_sizer->Add (_reference, 0);
 229                 reference_sizer->Add (_reference_note, 0);
 230                 _grid->Add (reference_sizer, wxGBPosition(r, 0), wxGBSpan(1, 3));
 231                 ++r;
 232         }
 233
 234         add_label_to_sizer (_grid, _type_label, true, wxGBPosition(r, 0));
 235         _frame_type->add (_grid, wxGBPosition(r, 1), wxGBSpan(1, 2));
 236         ++r;
 237
 238         int cr = 0;
 239         wxGridBagSizer* crop = new wxGridBagSizer (DCPOMATIC_SIZER_X_GAP, DCPOMATIC_SIZER_Y_GAP);
 240         add_label_to_sizer (crop, _left_crop_label, true, wxGBPosition (cr, 0));
 241         _left_crop->add (crop, wxGBPosition (cr, 1));
 242         add_label_to_sizer (crop, _right_crop_label, true, wxGBPosition (cr, 2));
 243         _right_crop->add (crop, wxGBPosition (cr, 3));
 244         ++cr;
 245         add_label_to_sizer (crop, _top_crop_label, true, wxGBPosition (cr, 0));
 246         _top_crop->add (crop, wxGBPosition (cr, 1));
 247         add_label_to_sizer (crop, _bottom_crop_label, true, wxGBPosition (cr, 2));
 248         _bottom_crop->add (crop, wxGBPosition (cr, 3));
 249         _grid->Add (crop, wxGBPosition (r, 0), wxGBSpan (2, 4));
 250         r += 2;
 251
 252         _scale_to_label->Show (full);
 253         _scale->show (full);
 254         _filters_label->Show (full);
 255         _filters->Show (full);
 256         _filters_button->Show (full);
 257         _colour_conversion_label->Show (full);
 258         _colour_conversion->Show (full);
 259         _edit_colour_conversion_button->Show (full);
 260
 261         add_label_to_sizer (_grid, _fade_in_label, true, wxGBPosition (r, 0));
 262         _grid->Add (_fade_in, wxGBPosition (r, 1), wxGBSpan (1, 3));
 263         ++r;
 264
 265         add_label_to_sizer (_grid, _fade_out_label, true, wxGBPosition (r, 0));
 266         _grid->Add (_fade_out, wxGBPosition (r, 1), wxGBSpan (1, 3));
 267         ++r;
 268
 269         if (full) {
 270                 add_label_to_sizer (_grid, _scale_to_label, true, wxGBPosition (r, 0));
 271                 _scale->add (_grid, wxGBPosition (r, 1), wxGBSpan (1, 2));
 272                 ++r;
 273
 274                 add_label_to_sizer (_grid, _filters_label, true, wxGBPosition (r, 0));
 275                 {
 276                         wxSizer* s = new wxBoxSizer (wxHORIZONTAL);
 277                         s->Add (_filters, 1, wxALIGN_CENTER_VERTICAL | wxTOP | wxBOTTOM | wxRIGHT, 6);
 278                         s->Add (_filters_button, 0, wxALIGN_CENTER_VERTICAL);
 279                         _grid->Add (s, wxGBPosition (r, 1), wxDefaultSpan, wxALIGN_CENTER_VERTICAL);
 280                 }
 281                 ++r;
 282
 283                 add_label_to_sizer (_grid, _colour_conversion_label, true, wxGBPosition(r, 0));
 284                 {
 285                         wxSizer* s = new wxBoxSizer (wxHORIZONTAL);
 286                         s->Add (_colour_conversion, 1, wxALIGN_CENTER_VERTICAL | wxTOP | wxBOTTOM | wxRIGHT, 6);
 287                         s->Add (_edit_colour_conversion_button, 0, wxALIGN_CENTER_VERTICAL);
 288                         _grid->Add (s, wxGBPosition (r, 1), wxDefaultSpan, wxALIGN_CENTER_VERTICAL);
 289                 }
 290                 ++r;
 291         }
 292
 293         _grid->Add (_description, wxGBPosition (r, 0), wxGBSpan (1, 4), wxEXPAND | wxALIGN_CENTER_VERTICAL, 6);
 294         ++r;
 295 }
 296
 297
 298 void
 299 VideoPanel::film_changed (Film::Property property)
 300 {
 301         switch (property) {
 302         case Film::VIDEO_FRAME_RATE:
 303         case Film::CONTAINER:
 304         case Film::RESOLUTION:
 305                 setup_description ();
 306                 setup_sensitivity ();
 307                 break;
 308         case Film::REEL_TYPE:
 309         case Film::INTEROP:
 310                 setup_sensitivity ();
 311                 break;
 312         default:
 313                 break;
 314         }
 315 }
 316
 317 std::size_t
 318 hash_value (boost::optional<ColourConversion> const & c)
 319 {
 320         boost::hash<string> hasher;
 321         if (!c) {
 322                 return hasher ("none");
 323         }
 324         return hasher (c->identifier());
 325 }
 326
 327
 328 void
 329 VideoPanel::film_content_changed (int property)
 330 {
 331         ContentList vc = _parent->selected_video ();
 332         shared_ptr<Content> vcs;
 333         shared_ptr<FFmpegContent> fcs;
 334         if (!vc.empty ()) {
 335                 vcs = vc.front ();
 336                 fcs = dynamic_pointer_cast<FFmpegContent> (vcs);
 337         }
 338
 339         if (property == ContentProperty::VIDEO_FRAME_RATE ||
 340             property == VideoContentProperty::FRAME_TYPE ||
 341             property == VideoContentProperty::CROP ||
 342             property == VideoContentProperty::SCALE) {
 343                 setup_description ();
 344         } else if (property == VideoContentProperty::COLOUR_CONVERSION) {
 345                 boost::unordered_set<optional<ColourConversion> > check;
 346                 BOOST_FOREACH (shared_ptr<const Content> i, vc) {
 347                         check.insert (i->video->colour_conversion());
 348                 }
 349
 350                 /* Remove any "Many" entry that we might have added previously.  There should
 351                  * be entries for each preset plus one for "None" and one for "Custom".
 352                  */
 353                 vector<PresetColourConversion> cc = PresetColourConversion::all ();
 354                 if (_colour_conversion->GetCount() > cc.size() + 2) {
 355                         _colour_conversion->Delete (_colour_conversion->GetCount() - 1);
 356                 }
 357
 358                 if (check.size() == 1) {
 359                         if (vcs && vcs->video->colour_conversion ()) {
 360                                 optional<size_t> preset = vcs->video->colour_conversion().get().preset ();
 361                                 if (preset) {
 362                                         checked_set (_colour_conversion, preset.get() + 1);
 363                                 } else {
 364                                         checked_set (_colour_conversion, cc.size() + 1);
 365                                 }
 366                         } else {
 367                                 checked_set (_colour_conversion, 0);
 368                         }
 369                 } else if (check.size() > 1) {
 370                         /* Add a "many" entry and select it as an indication that multiple different
 371                          * colour conversions are present in the selection.
 372                          */
 373                         _colour_conversion->Append (_("Many"));
 374                         checked_set (_colour_conversion, _colour_conversion->GetCount() - 1);
 375                 }
 376
 377                 setup_sensitivity ();
 378
 379         } else if (property == FFmpegContentProperty::FILTERS) {
 380                 if (fcs) {
 381                         string p = Filter::ffmpeg_string (fcs->filters ());
 382                         if (p.empty ()) {
 383                                 checked_set (_filters, _("None"));
 384                         } else {
 385                                 if (p.length() > 25) {
 386                                         p = p.substr (0, 25) + "...";
 387                                 }
 388                                 checked_set (_filters, p);
 389                         }
 390                 }
 391         } else if (property == VideoContentProperty::FADE_IN) {
 392                 set<Frame> check;
 393                 BOOST_FOREACH (shared_ptr<const Content> i, vc) {
 394                         check.insert (i->video->fade_in ());
 395                 }
 396
 397                 if (check.size() == 1) {
 398                         _fade_in->set (
 399                                 ContentTime::from_frames (vc.front()->video->fade_in(), vc.front()->active_video_frame_rate(_parent->film())),
 400                                 vc.front()->active_video_frame_rate(_parent->film())
 401                                 );
 402                 } else {
 403                         _fade_in->clear ();
 404                 }
 405         } else if (property == VideoContentProperty::FADE_OUT) {
 406                 set<Frame> check;
 407                 BOOST_FOREACH (shared_ptr<const Content> i, vc) {
 408                         check.insert (i->video->fade_out ());
 409                 }
 410
 411                 if (check.size() == 1) {
 412                         _fade_out->set (
 413                                 ContentTime::from_frames (vc.front()->video->fade_out(), vc.front()->active_video_frame_rate(_parent->film())),
 414                                 vc.front()->active_video_frame_rate(_parent->film())
 415                                 );
 416                 } else {
 417                         _fade_out->clear ();
 418                 }
 419         } else if (property == DCPContentProperty::REFERENCE_VIDEO) {
 420                 if (vc.size() == 1) {
 421                         shared_ptr<DCPContent> dcp = dynamic_pointer_cast<DCPContent> (vc.front ());
 422                         checked_set (_reference, dcp ? dcp->reference_video () : false);
 423                 } else {
 424                         checked_set (_reference, false);
 425                 }
 426
 427                 setup_sensitivity ();
 428         }
 429 }
 430
 431 /** Called when the `Edit filters' button has been clicked */
 432 void
 433 VideoPanel::edit_filters_clicked ()
 434 {
 435         FFmpegContentList c = _parent->selected_ffmpeg ();
 436         if (c.size() != 1) {
 437                 return;
 438         }
 439
 440         FilterDialog* d = new FilterDialog (this, c.front()->filters());
 441         d->ActiveChanged.connect (bind (&FFmpegContent::set_filters, c.front(), _1));
 442         d->ShowModal ();
 443         d->Destroy ();
 444 }
 445
 446 void
 447 VideoPanel::setup_description ()
 448 {
 449         ContentList vc = _parent->selected_video ();
 450         if (vc.empty ()) {
 451                 checked_set (_description, wxT (""));
 452                 return;
 453         } else if (vc.size() > 1) {
 454                 checked_set (_description, _("Multiple content selected"));
 455                 return;
 456         }
 457
 458         string d = vc.front()->video->processing_description (_parent->film());
 459         size_t lines = count (d.begin(), d.end(), '\n');
 460
 461         for (int i = lines; i < 6; ++i) {
 462                 d += "\n ";
 463         }
 464
 465         checked_set (_description, d);
 466         _sizer->Layout ();
 467 }
 468
 469 void
 470 VideoPanel::colour_conversion_changed ()
 471 {
 472         ContentList vc = _parent->selected_video ();
 473
 474         int const s = _colour_conversion->GetSelection ();
 475         vector<PresetColourConversion> all = PresetColourConversion::all ();
 476
 477         if (s == int(all.size() + 1)) {
 478                 edit_colour_conversion_clicked ();
 479         } else {
 480                 BOOST_FOREACH (shared_ptr<Content> i, _parent->selected_video()) {
 481                         if (s == 0) {
 482                                 i->video->unset_colour_conversion ();
 483                         } else if (s != int(all.size() + 2)) {
 484                                 i->video->set_colour_conversion (all[s - 1].conversion);
 485                         }
 486                 }
 487         }
 488 }
 489
 490 void
 491 VideoPanel::edit_colour_conversion_clicked ()
 492 {
 493         ContentList vc = _parent->selected_video ();
 494
 495         ContentColourConversionDialog* d = new ContentColourConversionDialog (this, vc.front()->video->yuv ());
 496         d->set (vc.front()->video->colour_conversion().get_value_or (PresetColourConversion::all().front().conversion));
 497         if (d->ShowModal() == wxID_OK) {
 498                 BOOST_FOREACH (shared_ptr<Content> i, vc) {
 499                         i->video->set_colour_conversion (d->get ());
 500                 }
 501         } else {
 502                 /* Reset the colour conversion choice */
 503                 film_content_changed (VideoContentProperty::COLOUR_CONVERSION);
 504         }
 505         d->Destroy ();
 506 }
 507
 508 void
 509 VideoPanel::content_selection_changed ()
 510 {
 511         ContentList video_sel = _parent->selected_video ();
 512
 513         _frame_type->set_content (video_sel);
 514         _left_crop->set_content (video_sel);
 515         _right_crop->set_content (video_sel);
 516         _top_crop->set_content (video_sel);
 517         _bottom_crop->set_content (video_sel);
 518         _scale->set_content (video_sel);
 519
 520         film_content_changed (ContentProperty::VIDEO_FRAME_RATE);
 521         film_content_changed (VideoContentProperty::CROP);
 522         film_content_changed (VideoContentProperty::COLOUR_CONVERSION);
 523         film_content_changed (VideoContentProperty::FADE_IN);
 524         film_content_changed (VideoContentProperty::FADE_OUT);
 525         film_content_changed (FFmpegContentProperty::FILTERS);
 526         film_content_changed (DCPContentProperty::REFERENCE_VIDEO);
 527
 528         setup_sensitivity ();
 529 }
 530
 531 void
 532 VideoPanel::setup_sensitivity ()
 533 {
 534         ContentList sel = _parent->selected ();
 535
 536         shared_ptr<DCPContent> dcp;
 537         if (sel.size() == 1) {
 538                 dcp = dynamic_pointer_cast<DCPContent> (sel.front ());
 539         }
 540
 541         string why_not;
 542         bool const can_reference = dcp && dcp->can_reference_video (_parent->film(), why_not);
 543         setup_refer_button (_reference, _reference_note, dcp, can_reference, why_not);
 544
 545         if (_reference->GetValue ()) {
 546                 _frame_type->wrapped()->Enable (false);
 547                 _left_crop->wrapped()->Enable (false);
 548                 _right_crop->wrapped()->Enable (false);
 549                 _top_crop->wrapped()->Enable (false);
 550                 _bottom_crop->wrapped()->Enable (false);
 551                 _fade_in->Enable (false);
 552                 _fade_out->Enable (false);
 553                 _scale->wrapped()->Enable (false);
 554                 _description->Enable (false);
 555                 _filters->Enable (false);
 556                 _filters_button->Enable (false);
 557                 _colour_conversion->Enable (false);
 558         } else {
 559                 ContentList video_sel = _parent->selected_video ();
 560                 FFmpegContentList ffmpeg_sel = _parent->selected_ffmpeg ();
 561                 bool const single = video_sel.size() == 1;
 562
 563                 _frame_type->wrapped()->Enable (true);
 564                 _left_crop->wrapped()->Enable (true);
 565                 _right_crop->wrapped()->Enable (true);
 566                 _top_crop->wrapped()->Enable (true);
 567                 _bottom_crop->wrapped()->Enable (true);
 568                 _fade_in->Enable (!video_sel.empty ());
 569                 _fade_out->Enable (!video_sel.empty ());
 570                 _scale->wrapped()->Enable (true);
 571                 _description->Enable (true);
 572                 _filters->Enable (true);
 573                 _filters_button->Enable (single && !ffmpeg_sel.empty ());
 574                 _colour_conversion->Enable (!video_sel.empty());
 575         }
 576
 577         ContentList vc = _parent->selected_video ();
 578         shared_ptr<Content> vcs;
 579         if (!vc.empty ()) {
 580                 vcs = vc.front ();
 581         }
 582
 583         if (vcs && vcs->video->colour_conversion ()) {
 584                 _edit_colour_conversion_button->Enable (!vcs->video->colour_conversion().get().preset());
 585         } else {
 586                 _edit_colour_conversion_button->Enable (false);
 587         }
 588 }
 589
 590 void
 591 VideoPanel::fade_in_changed ()
 592 {
 593         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected_video ()) {
 594                 double const vfr = i->active_video_frame_rate (_parent->film());
 595                 i->video->set_fade_in (_fade_in->get(vfr).frames_round(vfr));
 596         }
 597 }
 598
 599 void
 600 VideoPanel::fade_out_changed ()
 601 {
 602         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected_video ()) {
 603                 double const vfr = i->active_video_frame_rate (_parent->film());
 604                 i->video->set_fade_out (_fade_out->get(vfr).frames_round(vfr));
 605         }
 606 }
 607
 608 void
 609 VideoPanel::reference_clicked ()
 610 {
 611         ContentList c = _parent->selected ();
 612         if (c.size() != 1) {
 613                 return;
 614         }
 615
 616         shared_ptr<DCPContent> d = dynamic_pointer_cast<DCPContent> (c.front ());
 617         if (!d) {
 618                 return;
 619         }
 620
 621         d->set_reference_video (_reference->GetValue ());
 622 }