No-op; rename a whole load of wx constants to their shorter equivalents.
[dcpomatic.git] / src / wx / film_viewer.cc
1 /*
2     Copyright (C) 2012-2016 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 /** @file  src/film_viewer.cc
22  *  @brief A wx widget to view a preview of a Film.
23  */
24
25 #include "film_viewer.h"
26 #include "playhead_to_timecode_dialog.h"
27 #include "playhead_to_frame_dialog.h"
28 #include "wx_util.h"
29 #include "lib/film.h"
30 #include "lib/ratio.h"
31 #include "lib/util.h"
32 #include "lib/job_manager.h"
33 #include "lib/image.h"
34 #include "lib/exceptions.h"
35 #include "lib/examine_content_job.h"
36 #include "lib/filter.h"
37 #include "lib/player.h"
38 #include "lib/player_video.h"
39 #include "lib/video_content.h"
40 #include "lib/video_decoder.h"
41 #include "lib/timer.h"
42 #include "lib/log.h"
43 extern "C" {
44 #include <libavutil/pixfmt.h>
45 }
46 #include <dcp/exceptions.h>
47 #include <wx/tglbtn.h>
48 #include <iostream>
49 #include <iomanip>
50
51 using std::string;
52 using std::pair;
53 using std::min;
54 using std::max;
55 using std::cout;
56 using std::list;
57 using std::bad_alloc;
58 using std::make_pair;
59 using std::exception;
60 using boost::shared_ptr;
61 using boost::dynamic_pointer_cast;
62 using boost::weak_ptr;
63 using boost::optional;
64 using dcp::Size;
65
66 FilmViewer::FilmViewer (wxWindow* p)
67         : wxPanel (p)
68         , _panel (new wxPanel (this))
69         , _outline_content (new wxCheckBox (this, wxID_ANY, _("Outline content")))
70         , _left_eye (new wxRadioButton (this, wxID_ANY, _("Left eye"), wxDefaultPosition, wxDefaultSize, wxRB_GROUP))
71         , _right_eye (new wxRadioButton (this, wxID_ANY, _("Right eye")))
72         , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
73         , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
74         , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
75         , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
76         , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
77         , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
78         , _coalesce_player_changes (false)
79         , _pending_player_change (false)
80         , _last_get_accurate (true)
81 {
82 #ifndef __WXOSX__
83         _panel->SetDoubleBuffered (true);
84 #endif
85
86         _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
87
88         _v_sizer = new wxBoxSizer (wxVERTICAL);
89         SetSizer (_v_sizer);
90
91         _v_sizer->Add (_panel, 1, wxEXPAND);
92
93         wxBoxSizer* view_options = new wxBoxSizer (wxHORIZONTAL);
94         view_options->Add (_outline_content, 0, wxRIGHT, DCPOMATIC_SIZER_GAP);
95         view_options->Add (_left_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
96         view_options->Add (_right_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
97         _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP);
98
99         wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
100
101         wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
102         time_sizer->Add (_frame_number, 0, wxEXPAND);
103         time_sizer->Add (_timecode, 0, wxEXPAND);
104
105         h_sizer->Add (_back_button, 0, wxALL, 2);
106         h_sizer->Add (time_sizer, 0, wxEXPAND);
107         h_sizer->Add (_forward_button, 0, wxALL, 2);
108         h_sizer->Add (_play_button, 0, wxEXPAND);
109         h_sizer->Add (_slider, 1, wxEXPAND);
110
111         _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
112
113         _frame_number->SetMinSize (wxSize (84, -1));
114         _back_button->SetMinSize (wxSize (32, -1));
115         _forward_button->SetMinSize (wxSize (32, -1));
116
117         _panel->Bind          (wxEVT_PAINT,             boost::bind (&FilmViewer::paint_panel,     this));
118         _panel->Bind          (wxEVT_SIZE,              boost::bind (&FilmViewer::panel_sized,     this, _1));
119         _outline_content->Bind(wxEVT_CHECKBOX,          boost::bind (&FilmViewer::refresh_panel,   this));
120         _left_eye->Bind       (wxEVT_RADIOBUTTON,       boost::bind (&FilmViewer::refresh,         this));
121         _right_eye->Bind      (wxEVT_RADIOBUTTON,       boost::bind (&FilmViewer::refresh,         this));
122         _slider->Bind         (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved,    this));
123         _slider->Bind         (wxEVT_SCROLL_PAGEUP,     boost::bind (&FilmViewer::slider_moved,    this));
124         _slider->Bind         (wxEVT_SCROLL_PAGEDOWN,   boost::bind (&FilmViewer::slider_moved,    this));
125         _play_button->Bind    (wxEVT_TOGGLEBUTTON,      boost::bind (&FilmViewer::play_clicked,    this));
126         _timer.Bind           (wxEVT_TIMER,             boost::bind (&FilmViewer::timer,           this));
127         _back_button->Bind    (wxEVT_LEFT_DOWN,         boost::bind (&FilmViewer::back_clicked,    this, _1));
128         _forward_button->Bind (wxEVT_LEFT_DOWN,         boost::bind (&FilmViewer::forward_clicked, this, _1));
129         _frame_number->Bind   (wxEVT_LEFT_DOWN,         boost::bind (&FilmViewer::frame_number_clicked, this));
130         _timecode->Bind       (wxEVT_LEFT_DOWN,         boost::bind (&FilmViewer::timecode_clicked, this));
131
132         set_film (shared_ptr<Film> ());
133
134         JobManager::instance()->ActiveJobsChanged.connect (
135                 bind (&FilmViewer::active_jobs_changed, this, _2)
136                 );
137
138         setup_sensitivity ();
139 }
140
141 void
142 FilmViewer::set_film (shared_ptr<Film> film)
143 {
144         if (_film == film) {
145                 return;
146         }
147
148         _film = film;
149
150         _frame.reset ();
151
152         update_position_slider ();
153         update_position_label ();
154
155         if (!_film) {
156                 return;
157         }
158
159         try {
160                 _player.reset (new Player (_film, _film->playlist ()));
161                 _player->set_fast ();
162         } catch (bad_alloc) {
163                 error_dialog (this, _("There is not enough free memory to do that."));
164                 _film.reset ();
165                 return;
166         }
167
168         /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
169            in the preview.
170         */
171         _player->set_always_burn_subtitles (true);
172         _player->set_ignore_audio ();
173         _player->set_play_referenced ();
174
175         _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
176
177         _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
178
179         calculate_sizes ();
180         refresh ();
181
182         setup_sensitivity ();
183 }
184
185 void
186 FilmViewer::refresh_panel ()
187 {
188         _panel->Refresh ();
189         _panel->Update ();
190 }
191
192 void
193 FilmViewer::get (DCPTime p, bool accurate)
194 {
195         if (!_player) {
196                 return;
197         }
198
199         list<shared_ptr<PlayerVideo> > all_pv;
200         try {
201                 all_pv = _player->get_video (p, accurate);
202         } catch (exception& e) {
203                 error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data()));
204         }
205
206         if (!all_pv.empty ()) {
207                 try {
208                         shared_ptr<PlayerVideo> pv;
209                         if (all_pv.size() == 2) {
210                                 /* We have 3D; choose the correct eye */
211                                 if (_left_eye->GetValue()) {
212                                         if (all_pv.front()->eyes() == EYES_LEFT) {
213                                                 pv = all_pv.front();
214                                         } else {
215                                                 pv = all_pv.back();
216                                         }
217                                 } else {
218                                         if (all_pv.front()->eyes() == EYES_RIGHT) {
219                                                 pv = all_pv.front();
220                                         } else {
221                                                 pv = all_pv.back();
222                                         }
223                                 }
224                         } else {
225                                 /* 2D; no choice to make */
226                                 pv = all_pv.front ();
227                         }
228
229                         /* In an ideal world, what we would do here is:
230                          *
231                          * 1. convert to XYZ exactly as we do in the DCP creation path.
232                          * 2. convert back to RGB for the preview display, compensating
233                          *    for the monitor etc. etc.
234                          *
235                          * but this is inefficient if the source is RGB.  Since we don't
236                          * (currently) care too much about the precise accuracy of the preview's
237                          * colour mapping (and we care more about its speed) we try to short-
238                          * circuit this "ideal" situation in some cases.
239                          *
240                          * The content's specified colour conversion indicates the colourspace
241                          * which the content is in (according to the user).
242                          *
243                          * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source
244                          * image and convert it (from whatever the user has said it is) to RGB.
245                          */
246
247                         _frame = pv->image (
248                                 bind (&Log::dcp_log, _film->log().get(), _1, _2),
249                                 bind (&PlayerVideo::always_rgb, _1),
250                                 false, true
251                                 );
252
253                         ImageChanged (pv);
254
255                         _position = pv->time ();
256                         _inter_position = pv->inter_position ();
257                         _inter_size = pv->inter_size ();
258                 } catch (dcp::DCPReadError& e) {
259                         /* This can happen on the following sequence of events:
260                          * - load encrypted DCP
261                          * - add KDM
262                          * - DCP is examined again, which sets its "playable" flag to 1
263                          * - as a side effect of the exam, the viewer is updated using the old pieces
264                          * - the DCPDecoder in the old piece gives us an encrypted frame
265                          * - then, the pieces are re-made (but too late).
266                          *
267                          * I hope there's a better way to handle this ...
268                          */
269                         _frame.reset ();
270                         _position = p;
271                 }
272         } else {
273                 _frame.reset ();
274                 _position = p;
275         }
276
277         refresh_panel ();
278
279         _last_get_accurate = accurate;
280 }
281
282 void
283 FilmViewer::timer ()
284 {
285         DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
286
287         if ((_position + frame) >= _film->length ()) {
288                 _play_button->SetValue (false);
289                 check_play_state ();
290         } else {
291                 get (_position + frame, true);
292         }
293
294         update_position_label ();
295         update_position_slider ();
296 }
297
298 void
299 FilmViewer::paint_panel ()
300 {
301         wxPaintDC dc (_panel);
302
303         if (!_frame || !_film || !_out_size.width || !_out_size.height) {
304                 dc.Clear ();
305                 return;
306         }
307
308         wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
309         wxBitmap frame_bitmap (frame);
310         dc.DrawBitmap (frame_bitmap, 0, 0);
311
312         if (_out_size.width < _panel_size.width) {
313                 wxPen p (GetBackgroundColour ());
314                 wxBrush b (GetBackgroundColour ());
315                 dc.SetPen (p);
316                 dc.SetBrush (b);
317                 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
318         }
319
320         if (_out_size.height < _panel_size.height) {
321                 wxPen p (GetBackgroundColour ());
322                 wxBrush b (GetBackgroundColour ());
323                 dc.SetPen (p);
324                 dc.SetBrush (b);
325                 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
326         }
327
328         if (_outline_content->GetValue ()) {
329                 wxPen p (wxColour (255, 0, 0), 2);
330                 dc.SetPen (p);
331                 dc.SetBrush (*wxTRANSPARENT_BRUSH);
332                 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
333         }
334 }
335
336 void
337 FilmViewer::slider_moved ()
338 {
339         if (!_film) {
340                 return;
341         }
342
343         DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
344         /* Ensure that we hit the end of the film at the end of the slider */
345         if (t >= _film->length ()) {
346                 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
347         }
348         get (t, false);
349         update_position_label ();
350 }
351
352 void
353 FilmViewer::panel_sized (wxSizeEvent& ev)
354 {
355         _panel_size.width = ev.GetSize().GetWidth();
356         _panel_size.height = ev.GetSize().GetHeight();
357
358         calculate_sizes ();
359         refresh ();
360         update_position_label ();
361         update_position_slider ();
362 }
363
364 void
365 FilmViewer::calculate_sizes ()
366 {
367         if (!_film || !_player) {
368                 return;
369         }
370
371         Ratio const * container = _film->container ();
372
373         float const panel_ratio = _panel_size.ratio ();
374         float const film_ratio = container ? container->ratio () : 1.78;
375
376         if (panel_ratio < film_ratio) {
377                 /* panel is less widscreen than the film; clamp width */
378                 _out_size.width = _panel_size.width;
379                 _out_size.height = lrintf (_out_size.width / film_ratio);
380         } else {
381                 /* panel is more widescreen than the film; clamp height */
382                 _out_size.height = _panel_size.height;
383                 _out_size.width = lrintf (_out_size.height * film_ratio);
384         }
385
386         /* Catch silly values */
387         _out_size.width = max (64, _out_size.width);
388         _out_size.height = max (64, _out_size.height);
389
390         _player->set_video_container_size (_out_size);
391 }
392
393 void
394 FilmViewer::play_clicked ()
395 {
396         check_play_state ();
397 }
398
399 void
400 FilmViewer::check_play_state ()
401 {
402         if (!_film || _film->video_frame_rate() == 0) {
403                 return;
404         }
405
406         if (_play_button->GetValue()) {
407                 _timer.Start (1000 / _film->video_frame_rate());
408         } else {
409                 _timer.Stop ();
410         }
411 }
412
413 void
414 FilmViewer::update_position_slider ()
415 {
416         if (!_film) {
417                 _slider->SetValue (0);
418                 return;
419         }
420
421         DCPTime const len = _film->length ();
422
423         if (len.get ()) {
424                 int const new_slider_position = 4096 * _position.get() / len.get();
425                 if (new_slider_position != _slider->GetValue()) {
426                         _slider->SetValue (new_slider_position);
427                 }
428         }
429 }
430
431 void
432 FilmViewer::update_position_label ()
433 {
434         if (!_film) {
435                 _frame_number->SetLabel ("0");
436                 _timecode->SetLabel ("0:0:0.0");
437                 return;
438         }
439
440         double const fps = _film->video_frame_rate ();
441         /* Count frame number from 1 ... not sure if this is the best idea */
442         _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
443         _timecode->SetLabel (time_to_timecode (_position, fps));
444 }
445
446 void
447 FilmViewer::active_jobs_changed (optional<string> j)
448 {
449         /* examine content is the only job which stops the viewer working */
450         bool const a = !j || *j != "examine_content";
451         _slider->Enable (a);
452         _play_button->Enable (a);
453 }
454
455 DCPTime
456 FilmViewer::nudge_amount (wxMouseEvent& ev)
457 {
458         DCPTime amount = DCPTime::from_frames (1, _film->video_frame_rate ());
459
460         if (ev.ShiftDown() && !ev.ControlDown()) {
461                 amount = DCPTime::from_seconds (1);
462         } else if (!ev.ShiftDown() && ev.ControlDown()) {
463                 amount = DCPTime::from_seconds (10);
464         } else if (ev.ShiftDown() && ev.ControlDown()) {
465                 amount = DCPTime::from_seconds (60);
466         }
467
468         return amount;
469 }
470
471 void
472 FilmViewer::go_to (DCPTime t)
473 {
474         if (t < DCPTime ()) {
475                 t = DCPTime ();
476         }
477
478         if (t >= _film->length ()) {
479                 t = _film->length ();
480         }
481
482         get (t, true);
483         update_position_label ();
484         update_position_slider ();
485 }
486
487 void
488 FilmViewer::back_clicked (wxMouseEvent& ev)
489 {
490         go_to (_position - nudge_amount (ev));
491         ev.Skip ();
492 }
493
494 void
495 FilmViewer::forward_clicked (wxMouseEvent& ev)
496 {
497         go_to (_position + nudge_amount (ev));
498         ev.Skip ();
499 }
500
501 void
502 FilmViewer::player_changed (bool frequent)
503 {
504         if (frequent) {
505                 return;
506         }
507
508         if (_coalesce_player_changes) {
509                 _pending_player_change = true;
510                 return;
511         }
512
513         calculate_sizes ();
514         refresh ();
515         update_position_label ();
516         update_position_slider ();
517 }
518
519 void
520 FilmViewer::setup_sensitivity ()
521 {
522         bool const c = _film && !_film->content().empty ();
523
524         _slider->Enable (c);
525         _back_button->Enable (c);
526         _forward_button->Enable (c);
527         _play_button->Enable (c);
528         _outline_content->Enable (c);
529         _frame_number->Enable (c);
530         _timecode->Enable (c);
531
532         _left_eye->Enable (c && _film->three_d ());
533         _right_eye->Enable (c && _film->three_d ());
534 }
535
536 void
537 FilmViewer::film_changed (Film::Property p)
538 {
539         if (p == Film::CONTENT || p == Film::THREE_D) {
540                 setup_sensitivity ();
541         }
542 }
543
544 /** Re-get the current frame */
545 void
546 FilmViewer::refresh ()
547 {
548         get (_position, _last_get_accurate);
549 }
550
551 void
552 FilmViewer::set_position (DCPTime p)
553 {
554         _position = p;
555         get (_position, true);
556         update_position_label ();
557         update_position_slider ();
558 }
559
560 void
561 FilmViewer::set_coalesce_player_changes (bool c)
562 {
563         _coalesce_player_changes = c;
564
565         if (c) {
566                 _pending_player_change = false;
567         } else {
568                 if (_pending_player_change) {
569                         player_changed (false);
570                 }
571         }
572 }
573
574 void
575 FilmViewer::timecode_clicked ()
576 {
577         PlayheadToTimecodeDialog* dialog = new PlayheadToTimecodeDialog (this, _film->video_frame_rate ());
578         if (dialog->ShowModal() == wxID_OK) {
579                 go_to (dialog->get ());
580         }
581         dialog->Destroy ();
582 }
583
584 void
585 FilmViewer::frame_number_clicked ()
586 {
587         PlayheadToFrameDialog* dialog = new PlayheadToFrameDialog (this, _film->video_frame_rate ());
588         if (dialog->ShowModal() == wxID_OK) {
589                 go_to (dialog->get ());
590         }
591         dialog->Destroy ();
592 }