2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/film_viewer.cc
21 * @brief A wx widget to view a preview of a Film.
25 #include "lib/ratio.h"
27 #include "lib/job_manager.h"
28 #include "lib/image.h"
29 #include "lib/exceptions.h"
30 #include "lib/examine_content_job.h"
31 #include "lib/filter.h"
32 #include "lib/player.h"
33 #include "lib/player_video.h"
34 #include "lib/video_content.h"
35 #include "lib/video_decoder.h"
36 #include "lib/timer.h"
38 #include "film_viewer.h"
41 #include <libavutil/pixfmt.h>
43 #include <dcp/exceptions.h>
44 #include <wx/tglbtn.h>
57 using boost::shared_ptr;
58 using boost::dynamic_pointer_cast;
59 using boost::weak_ptr;
60 using boost::optional;
63 FilmViewer::FilmViewer (wxWindow* p)
65 , _panel (new wxPanel (this))
66 , _outline_content (new wxCheckBox (this, wxID_ANY, _("Outline content")))
67 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
68 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
69 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
70 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
71 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
72 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
73 , _coalesce_player_changes (false)
74 , _pending_player_change (false)
75 , _last_get_accurate (true)
78 _panel->SetDoubleBuffered (true);
81 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
83 _v_sizer = new wxBoxSizer (wxVERTICAL);
86 _v_sizer->Add (_panel, 1, wxEXPAND);
88 _v_sizer->Add (_outline_content, 0, wxALL, DCPOMATIC_SIZER_GAP);
90 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
92 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
93 time_sizer->Add (_frame_number, 0, wxEXPAND);
94 time_sizer->Add (_timecode, 0, wxEXPAND);
96 h_sizer->Add (_back_button, 0, wxALL, 2);
97 h_sizer->Add (time_sizer, 0, wxEXPAND);
98 h_sizer->Add (_forward_button, 0, wxALL, 2);
99 h_sizer->Add (_play_button, 0, wxEXPAND);
100 h_sizer->Add (_slider, 1, wxEXPAND);
102 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
104 _frame_number->SetMinSize (wxSize (84, -1));
105 _back_button->SetMinSize (wxSize (32, -1));
106 _forward_button->SetMinSize (wxSize (32, -1));
108 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
109 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
110 _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this));
111 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
112 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
113 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
114 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
115 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
116 _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this));
117 _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this));
119 set_film (shared_ptr<Film> ());
121 JobManager::instance()->ActiveJobsChanged.connect (
122 bind (&FilmViewer::active_jobs_changed, this, _2)
125 setup_sensitivity ();
129 FilmViewer::set_film (shared_ptr<Film> film)
139 update_position_slider ();
140 update_position_label ();
147 _player.reset (new Player (_film, _film->playlist ()));
148 } catch (bad_alloc) {
149 error_dialog (this, _("There is not enough free memory to do that."));
154 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
157 _player->set_always_burn_subtitles (true);
158 _player->set_ignore_audio ();
159 _player->set_play_referenced ();
161 _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
163 _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
168 setup_sensitivity ();
172 FilmViewer::refresh_panel ()
179 FilmViewer::get (DCPTime p, bool accurate)
185 list<shared_ptr<PlayerVideo> > pvf;
187 pvf = _player->get_video (p, accurate);
188 } catch (exception& e) {
189 error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data()));
194 /* XXX: this could now give us a 48-bit image, which is a bit wasteful,
195 or a XYZ image, which the code below will currently rely on FFmpeg
196 to colourspace-convert.
198 _frame = pvf.front()->image (boost::bind (&Log::dcp_log, _film->log().get(), _1, _2));
199 ImageChanged (pvf.front ());
201 dcp::YUVToRGB yuv_to_rgb = dcp::YUV_TO_RGB_REC601;
202 if (pvf.front()->colour_conversion()) {
203 yuv_to_rgb = pvf.front()->colour_conversion().get().yuv_to_rgb();
206 _frame = _frame->scale (_frame->size(), yuv_to_rgb, AV_PIX_FMT_RGB24, false);
207 _position = pvf.front()->time ();
208 _inter_position = pvf.front()->inter_position ();
209 _inter_size = pvf.front()->inter_size ();
210 } catch (dcp::DCPReadError& e) {
211 /* This can happen on the following sequence of events:
212 * - load encrypted DCP
214 * - DCP is examined again, which sets its "playable" flag to 1
215 * - as a side effect of the exam, the viewer is updated using the old pieces
216 * - the DCPDecoder in the old piece gives us an encrypted frame
217 * - then, the pieces are re-made (but too late).
219 * I hope there's a better way to handle this ...
231 _last_get_accurate = accurate;
237 DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
239 if ((_position + frame) >= _film->length ()) {
240 _play_button->SetValue (false);
243 get (_position + frame, true);
246 update_position_label ();
247 update_position_slider ();
251 FilmViewer::paint_panel ()
253 wxPaintDC dc (_panel);
255 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
260 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
261 wxBitmap frame_bitmap (frame);
262 dc.DrawBitmap (frame_bitmap, 0, 0);
264 if (_out_size.width < _panel_size.width) {
265 wxPen p (GetBackgroundColour ());
266 wxBrush b (GetBackgroundColour ());
269 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
272 if (_out_size.height < _panel_size.height) {
273 wxPen p (GetBackgroundColour ());
274 wxBrush b (GetBackgroundColour ());
277 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
280 if (_outline_content->GetValue ()) {
281 wxPen p (wxColour (255, 0, 0), 2);
283 dc.SetBrush (*wxTRANSPARENT_BRUSH);
284 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
289 FilmViewer::slider_moved ()
295 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
296 /* Ensure that we hit the end of the film at the end of the slider */
297 if (t >= _film->length ()) {
298 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
301 update_position_label ();
305 FilmViewer::panel_sized (wxSizeEvent& ev)
307 _panel_size.width = ev.GetSize().GetWidth();
308 _panel_size.height = ev.GetSize().GetHeight();
312 update_position_label ();
313 update_position_slider ();
317 FilmViewer::calculate_sizes ()
319 if (!_film || !_player) {
323 Ratio const * container = _film->container ();
325 float const panel_ratio = _panel_size.ratio ();
326 float const film_ratio = container ? container->ratio () : 1.78;
328 if (panel_ratio < film_ratio) {
329 /* panel is less widscreen than the film; clamp width */
330 _out_size.width = _panel_size.width;
331 _out_size.height = lrintf (_out_size.width / film_ratio);
333 /* panel is more widescreen than the film; clamp height */
334 _out_size.height = _panel_size.height;
335 _out_size.width = lrintf (_out_size.height * film_ratio);
338 /* Catch silly values */
339 _out_size.width = max (64, _out_size.width);
340 _out_size.height = max (64, _out_size.height);
342 _player->set_video_container_size (_out_size);
346 FilmViewer::play_clicked ()
352 FilmViewer::check_play_state ()
354 if (!_film || _film->video_frame_rate() == 0) {
358 if (_play_button->GetValue()) {
359 _timer.Start (1000 / _film->video_frame_rate());
366 FilmViewer::update_position_slider ()
369 _slider->SetValue (0);
373 DCPTime const len = _film->length ();
376 int const new_slider_position = 4096 * _position.get() / len.get();
377 if (new_slider_position != _slider->GetValue()) {
378 _slider->SetValue (new_slider_position);
384 FilmViewer::update_position_label ()
387 _frame_number->SetLabel ("0");
388 _timecode->SetLabel ("0:0:0.0");
392 double const fps = _film->video_frame_rate ();
393 /* Count frame number from 1 ... not sure if this is the best idea */
394 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
395 _timecode->SetLabel (time_to_timecode (_position, fps));
399 FilmViewer::active_jobs_changed (optional<string> j)
401 /* examine content is the only job which stops the viewer working */
402 bool const a = !j || *j != "examine_content";
404 _play_button->Enable (a);
408 FilmViewer::back_clicked ()
410 DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ());
411 if (p < DCPTime ()) {
416 update_position_label ();
417 update_position_slider ();
421 FilmViewer::forward_clicked ()
423 DCPTime p = _position + DCPTime::from_frames (1, _film->video_frame_rate ());
424 if (p >= _film->length ()) {
429 update_position_label ();
430 update_position_slider ();
434 FilmViewer::player_changed (bool frequent)
440 if (_coalesce_player_changes) {
441 _pending_player_change = true;
447 update_position_label ();
448 update_position_slider ();
452 FilmViewer::setup_sensitivity ()
454 bool const c = _film && !_film->content().empty ();
457 _back_button->Enable (c);
458 _forward_button->Enable (c);
459 _play_button->Enable (c);
460 _outline_content->Enable (c);
461 _frame_number->Enable (c);
462 _timecode->Enable (c);
466 FilmViewer::film_changed (Film::Property p)
468 if (p == Film::CONTENT) {
469 setup_sensitivity ();
473 /** Re-get the current frame */
475 FilmViewer::refresh ()
477 get (_position, _last_get_accurate);
481 FilmViewer::set_position (DCPTime p)
484 get (_position, true);
485 update_position_label ();
486 update_position_slider ();
490 FilmViewer::set_coalesce_player_changes (bool c)
492 _coalesce_player_changes = c;
495 _pending_player_change = false;
497 if (_pending_player_change) {
498 player_changed (false);