2 Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
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.
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.
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/>.
21 /** @file src/film_viewer.cc
22 * @brief A wx widget to view a preview of a Film.
26 #include "lib/ratio.h"
28 #include "lib/job_manager.h"
29 #include "lib/image.h"
30 #include "lib/exceptions.h"
31 #include "lib/examine_content_job.h"
32 #include "lib/filter.h"
33 #include "lib/player.h"
34 #include "lib/player_video.h"
35 #include "lib/video_content.h"
36 #include "lib/video_decoder.h"
37 #include "lib/timer.h"
39 #include "film_viewer.h"
42 #include <libavutil/pixfmt.h>
44 #include <dcp/exceptions.h>
45 #include <wx/tglbtn.h>
58 using boost::shared_ptr;
59 using boost::dynamic_pointer_cast;
60 using boost::weak_ptr;
61 using boost::optional;
64 FilmViewer::FilmViewer (wxWindow* p)
66 , _panel (new wxPanel (this))
67 , _outline_content (new wxCheckBox (this, wxID_ANY, _("Outline content")))
68 , _left_eye (new wxRadioButton (this, wxID_ANY, _("Left eye"), wxDefaultPosition, wxDefaultSize, wxRB_GROUP))
69 , _right_eye (new wxRadioButton (this, wxID_ANY, _("Right eye")))
70 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
71 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
72 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
73 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
74 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
75 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
76 , _coalesce_player_changes (false)
77 , _pending_player_change (false)
78 , _last_get_accurate (true)
81 _panel->SetDoubleBuffered (true);
84 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
86 _v_sizer = new wxBoxSizer (wxVERTICAL);
89 _v_sizer->Add (_panel, 1, wxEXPAND);
91 wxBoxSizer* view_options = new wxBoxSizer (wxHORIZONTAL);
92 view_options->Add (_outline_content, 0, wxRIGHT, DCPOMATIC_SIZER_GAP);
93 view_options->Add (_left_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
94 view_options->Add (_right_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
95 _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP);
97 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
99 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
100 time_sizer->Add (_frame_number, 0, wxEXPAND);
101 time_sizer->Add (_timecode, 0, wxEXPAND);
103 h_sizer->Add (_back_button, 0, wxALL, 2);
104 h_sizer->Add (time_sizer, 0, wxEXPAND);
105 h_sizer->Add (_forward_button, 0, wxALL, 2);
106 h_sizer->Add (_play_button, 0, wxEXPAND);
107 h_sizer->Add (_slider, 1, wxEXPAND);
109 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
111 _frame_number->SetMinSize (wxSize (84, -1));
112 _back_button->SetMinSize (wxSize (32, -1));
113 _forward_button->SetMinSize (wxSize (32, -1));
115 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
116 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
117 _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this));
118 _left_eye->Bind (wxEVT_COMMAND_RADIOBUTTON_SELECTED, boost::bind (&FilmViewer::refresh, this));
119 _right_eye->Bind (wxEVT_COMMAND_RADIOBUTTON_SELECTED, boost::bind (&FilmViewer::refresh, this));
120 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
121 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
122 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
123 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
124 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
125 _back_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::back_clicked, this, _1));
126 _forward_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::forward_clicked, this, _1));
128 set_film (shared_ptr<Film> ());
130 JobManager::instance()->ActiveJobsChanged.connect (
131 bind (&FilmViewer::active_jobs_changed, this, _2)
134 setup_sensitivity ();
138 FilmViewer::set_film (shared_ptr<Film> film)
148 update_position_slider ();
149 update_position_label ();
156 _player.reset (new Player (_film, _film->playlist ()));
157 _player->set_fast ();
158 } catch (bad_alloc) {
159 error_dialog (this, _("There is not enough free memory to do that."));
164 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
167 _player->set_always_burn_subtitles (true);
168 _player->set_ignore_audio ();
169 _player->set_play_referenced ();
171 _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
173 _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
178 setup_sensitivity ();
182 FilmViewer::refresh_panel ()
189 FilmViewer::get (DCPTime p, bool accurate)
195 list<shared_ptr<PlayerVideo> > all_pv;
197 all_pv = _player->get_video (p, accurate);
198 } catch (exception& e) {
199 error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data()));
202 if (!all_pv.empty ()) {
204 shared_ptr<PlayerVideo> pv;
205 if (all_pv.size() == 2) {
206 /* We have 3D; choose the correct eye */
207 if (_left_eye->GetValue()) {
208 if (all_pv.front()->eyes() == EYES_LEFT) {
214 if (all_pv.front()->eyes() == EYES_RIGHT) {
221 /* 2D; no choice to make */
222 pv = all_pv.front ();
225 /* In an ideal world, what we would do here is:
227 * 1. convert to XYZ exactly as we do in the DCP creation path.
228 * 2. convert back to RGB for the preview display, compensating
229 * for the monitor etc. etc.
231 * but this is inefficient if the source is RGB. Since we don't
232 * (currently) care too much about the precise accuracy of the preview's
233 * colour mapping (and we care more about its speed) we try to short-
234 * circuit this "ideal" situation in some cases.
236 * The content's specified colour conversion indicates the colourspace
237 * which the content is in (according to the user).
239 * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source
240 * image and convert it (from whatever the user has said it is) to RGB.
244 bind (&Log::dcp_log, _film->log().get(), _1, _2),
245 bind (&PlayerVideo::always_rgb, _1),
251 _position = pv->time ();
252 _inter_position = pv->inter_position ();
253 _inter_size = pv->inter_size ();
254 } catch (dcp::DCPReadError& e) {
255 /* This can happen on the following sequence of events:
256 * - load encrypted DCP
258 * - DCP is examined again, which sets its "playable" flag to 1
259 * - as a side effect of the exam, the viewer is updated using the old pieces
260 * - the DCPDecoder in the old piece gives us an encrypted frame
261 * - then, the pieces are re-made (but too late).
263 * I hope there's a better way to handle this ...
275 _last_get_accurate = accurate;
281 DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
283 if ((_position + frame) >= _film->length ()) {
284 _play_button->SetValue (false);
287 get (_position + frame, true);
290 update_position_label ();
291 update_position_slider ();
295 FilmViewer::paint_panel ()
297 wxPaintDC dc (_panel);
299 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
304 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
305 wxBitmap frame_bitmap (frame);
306 dc.DrawBitmap (frame_bitmap, 0, 0);
308 if (_out_size.width < _panel_size.width) {
309 wxPen p (GetBackgroundColour ());
310 wxBrush b (GetBackgroundColour ());
313 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
316 if (_out_size.height < _panel_size.height) {
317 wxPen p (GetBackgroundColour ());
318 wxBrush b (GetBackgroundColour ());
321 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
324 if (_outline_content->GetValue ()) {
325 wxPen p (wxColour (255, 0, 0), 2);
327 dc.SetBrush (*wxTRANSPARENT_BRUSH);
328 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
333 FilmViewer::slider_moved ()
339 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
340 /* Ensure that we hit the end of the film at the end of the slider */
341 if (t >= _film->length ()) {
342 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
345 update_position_label ();
349 FilmViewer::panel_sized (wxSizeEvent& ev)
351 _panel_size.width = ev.GetSize().GetWidth();
352 _panel_size.height = ev.GetSize().GetHeight();
356 update_position_label ();
357 update_position_slider ();
361 FilmViewer::calculate_sizes ()
363 if (!_film || !_player) {
367 Ratio const * container = _film->container ();
369 float const panel_ratio = _panel_size.ratio ();
370 float const film_ratio = container ? container->ratio () : 1.78;
372 if (panel_ratio < film_ratio) {
373 /* panel is less widscreen than the film; clamp width */
374 _out_size.width = _panel_size.width;
375 _out_size.height = lrintf (_out_size.width / film_ratio);
377 /* panel is more widescreen than the film; clamp height */
378 _out_size.height = _panel_size.height;
379 _out_size.width = lrintf (_out_size.height * film_ratio);
382 /* Catch silly values */
383 _out_size.width = max (64, _out_size.width);
384 _out_size.height = max (64, _out_size.height);
386 _player->set_video_container_size (_out_size);
390 FilmViewer::play_clicked ()
396 FilmViewer::check_play_state ()
398 if (!_film || _film->video_frame_rate() == 0) {
402 if (_play_button->GetValue()) {
403 _timer.Start (1000 / _film->video_frame_rate());
410 FilmViewer::update_position_slider ()
413 _slider->SetValue (0);
417 DCPTime const len = _film->length ();
420 int const new_slider_position = 4096 * _position.get() / len.get();
421 if (new_slider_position != _slider->GetValue()) {
422 _slider->SetValue (new_slider_position);
428 FilmViewer::update_position_label ()
431 _frame_number->SetLabel ("0");
432 _timecode->SetLabel ("0:0:0.0");
436 double const fps = _film->video_frame_rate ();
437 /* Count frame number from 1 ... not sure if this is the best idea */
438 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
439 _timecode->SetLabel (time_to_timecode (_position, fps));
443 FilmViewer::active_jobs_changed (optional<string> j)
445 /* examine content is the only job which stops the viewer working */
446 bool const a = !j || *j != "examine_content";
448 _play_button->Enable (a);
452 FilmViewer::nudge_amount (wxMouseEvent& ev)
454 DCPTime amount = DCPTime::from_frames (1, _film->video_frame_rate ());
456 if (ev.ShiftDown() && !ev.ControlDown()) {
457 amount = DCPTime::from_seconds (1);
458 } else if (!ev.ShiftDown() && ev.ControlDown()) {
459 amount = DCPTime::from_seconds (10);
460 } else if (ev.ShiftDown() && ev.ControlDown()) {
461 amount = DCPTime::from_seconds (60);
468 FilmViewer::back_clicked (wxMouseEvent& ev)
470 DCPTime p = _position - nudge_amount (ev);
471 if (p < DCPTime ()) {
476 update_position_label ();
477 update_position_slider ();
483 FilmViewer::forward_clicked (wxMouseEvent& ev)
485 DCPTime p = _position + nudge_amount (ev);
486 if (p >= _film->length ()) {
491 update_position_label ();
492 update_position_slider ();
498 FilmViewer::player_changed (bool frequent)
504 if (_coalesce_player_changes) {
505 _pending_player_change = true;
511 update_position_label ();
512 update_position_slider ();
516 FilmViewer::setup_sensitivity ()
518 bool const c = _film && !_film->content().empty ();
521 _back_button->Enable (c);
522 _forward_button->Enable (c);
523 _play_button->Enable (c);
524 _outline_content->Enable (c);
525 _frame_number->Enable (c);
526 _timecode->Enable (c);
528 _left_eye->Enable (c && _film->three_d ());
529 _right_eye->Enable (c && _film->three_d ());
533 FilmViewer::film_changed (Film::Property p)
535 if (p == Film::CONTENT || p == Film::THREE_D) {
536 setup_sensitivity ();
540 /** Re-get the current frame */
542 FilmViewer::refresh ()
544 get (_position, _last_get_accurate);
548 FilmViewer::set_position (DCPTime p)
551 get (_position, true);
552 update_position_label ();
553 update_position_slider ();
557 FilmViewer::set_coalesce_player_changes (bool c)
559 _coalesce_player_changes = c;
562 _pending_player_change = false;
564 if (_pending_player_change) {
565 player_changed (false);