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 , _last_get_accurate (true)
76 _panel->SetDoubleBuffered (true);
79 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
81 _v_sizer = new wxBoxSizer (wxVERTICAL);
84 _v_sizer->Add (_panel, 1, wxEXPAND);
86 _v_sizer->Add (_outline_content, 0, wxALL, DCPOMATIC_SIZER_GAP);
88 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
90 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
91 time_sizer->Add (_frame_number, 0, wxEXPAND);
92 time_sizer->Add (_timecode, 0, wxEXPAND);
94 h_sizer->Add (_back_button, 0, wxALL, 2);
95 h_sizer->Add (time_sizer, 0, wxEXPAND);
96 h_sizer->Add (_forward_button, 0, wxALL, 2);
97 h_sizer->Add (_play_button, 0, wxEXPAND);
98 h_sizer->Add (_slider, 1, wxEXPAND);
100 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
102 _frame_number->SetMinSize (wxSize (84, -1));
103 _back_button->SetMinSize (wxSize (32, -1));
104 _forward_button->SetMinSize (wxSize (32, -1));
106 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
107 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
108 _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this));
109 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
110 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
111 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
112 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
113 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
114 _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this));
115 _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this));
117 set_film (shared_ptr<Film> ());
119 JobManager::instance()->ActiveJobsChanged.connect (
120 bind (&FilmViewer::active_jobs_changed, this, _2)
123 setup_sensitivity ();
127 FilmViewer::set_film (shared_ptr<Film> film)
137 update_position_slider ();
138 update_position_label ();
145 _player.reset (new Player (_film, _film->playlist ()));
146 } catch (bad_alloc) {
147 error_dialog (this, _("There is not enough free memory to do that."));
152 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
155 _player->set_always_burn_subtitles (true);
156 _player->set_ignore_audio ();
157 _player->set_play_referenced ();
159 _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
161 _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
166 setup_sensitivity ();
170 FilmViewer::refresh_panel ()
177 FilmViewer::get (DCPTime p, bool accurate)
183 list<shared_ptr<PlayerVideo> > pvf;
185 pvf = _player->get_video (p, accurate);
186 } catch (exception& e) {
187 error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data()));
192 /* XXX: this could now give us a 48-bit image, which is a bit wasteful,
193 or a XYZ image, which the code below will currently rely on FFmpeg
194 to colourspace-convert.
196 _frame = pvf.front()->image (boost::bind (&Log::dcp_log, _film->log().get(), _1, _2));
197 ImageChanged (pvf.front ());
199 dcp::YUVToRGB yuv_to_rgb = dcp::YUV_TO_RGB_REC601;
200 if (pvf.front()->colour_conversion()) {
201 yuv_to_rgb = pvf.front()->colour_conversion().get().yuv_to_rgb();
204 _frame = _frame->scale (_frame->size(), yuv_to_rgb, AV_PIX_FMT_RGB24, false);
205 _position = pvf.front()->time ();
206 _inter_position = pvf.front()->inter_position ();
207 _inter_size = pvf.front()->inter_size ();
208 } catch (dcp::DCPReadError& e) {
209 /* This can happen on the following sequence of events:
210 * - load encrypted DCP
212 * - DCP is examined again, which sets its "playable" flag to 1
213 * - as a side effect of the exam, the viewer is updated using the old pieces
214 * - the DCPDecoder in the old piece gives us an encrypted frame
215 * - then, the pieces are re-made (but too late).
217 * I hope there's a better way to handle this ...
229 _last_get_accurate = accurate;
235 DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
237 if ((_position + frame) >= _film->length ()) {
238 _play_button->SetValue (false);
241 get (_position + frame, true);
244 update_position_label ();
245 update_position_slider ();
249 FilmViewer::paint_panel ()
251 wxPaintDC dc (_panel);
253 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
258 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
259 wxBitmap frame_bitmap (frame);
260 dc.DrawBitmap (frame_bitmap, 0, 0);
262 if (_out_size.width < _panel_size.width) {
263 wxPen p (GetBackgroundColour ());
264 wxBrush b (GetBackgroundColour ());
267 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
270 if (_out_size.height < _panel_size.height) {
271 wxPen p (GetBackgroundColour ());
272 wxBrush b (GetBackgroundColour ());
275 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
278 if (_outline_content->GetValue ()) {
279 wxPen p (wxColour (255, 0, 0), 2);
281 dc.SetBrush (*wxTRANSPARENT_BRUSH);
282 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
287 FilmViewer::slider_moved ()
293 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
294 /* Ensure that we hit the end of the film at the end of the slider */
295 if (t >= _film->length ()) {
296 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
299 update_position_label ();
303 FilmViewer::panel_sized (wxSizeEvent& ev)
305 _panel_size.width = ev.GetSize().GetWidth();
306 _panel_size.height = ev.GetSize().GetHeight();
310 update_position_label ();
311 update_position_slider ();
315 FilmViewer::calculate_sizes ()
317 if (!_film || !_player) {
321 Ratio const * container = _film->container ();
323 float const panel_ratio = _panel_size.ratio ();
324 float const film_ratio = container ? container->ratio () : 1.78;
326 if (panel_ratio < film_ratio) {
327 /* panel is less widscreen than the film; clamp width */
328 _out_size.width = _panel_size.width;
329 _out_size.height = lrintf (_out_size.width / film_ratio);
331 /* panel is more widescreen than the film; clamp height */
332 _out_size.height = _panel_size.height;
333 _out_size.width = lrintf (_out_size.height * film_ratio);
336 /* Catch silly values */
337 _out_size.width = max (64, _out_size.width);
338 _out_size.height = max (64, _out_size.height);
340 _player->set_video_container_size (_out_size);
344 FilmViewer::play_clicked ()
350 FilmViewer::check_play_state ()
352 if (!_film || _film->video_frame_rate() == 0) {
356 if (_play_button->GetValue()) {
357 _timer.Start (1000 / _film->video_frame_rate());
364 FilmViewer::update_position_slider ()
367 _slider->SetValue (0);
371 DCPTime const len = _film->length ();
374 int const new_slider_position = 4096 * _position.get() / len.get();
375 if (new_slider_position != _slider->GetValue()) {
376 _slider->SetValue (new_slider_position);
382 FilmViewer::update_position_label ()
385 _frame_number->SetLabel ("0");
386 _timecode->SetLabel ("0:0:0.0");
390 double const fps = _film->video_frame_rate ();
391 /* Count frame number from 1 ... not sure if this is the best idea */
392 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
393 _timecode->SetLabel (time_to_timecode (_position, fps));
397 FilmViewer::active_jobs_changed (optional<string> j)
399 /* examine content is the only job which stops the viewer working */
400 bool const a = !j || *j != "examine_content";
402 _play_button->Enable (a);
406 FilmViewer::back_clicked ()
408 DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ());
409 if (p < DCPTime ()) {
414 update_position_label ();
415 update_position_slider ();
419 FilmViewer::forward_clicked ()
421 DCPTime p = _position + DCPTime::from_frames (1, _film->video_frame_rate ());
422 if (p >= _film->length ()) {
427 update_position_label ();
428 update_position_slider ();
432 FilmViewer::player_changed (bool frequent)
440 update_position_label ();
441 update_position_slider ();
445 FilmViewer::setup_sensitivity ()
447 bool const c = _film && !_film->content().empty ();
450 _back_button->Enable (c);
451 _forward_button->Enable (c);
452 _play_button->Enable (c);
453 _outline_content->Enable (c);
454 _frame_number->Enable (c);
455 _timecode->Enable (c);
459 FilmViewer::film_changed (Film::Property p)
461 if (p == Film::CONTENT) {
462 setup_sensitivity ();
466 /** Re-get the current frame */
468 FilmViewer::refresh ()
470 get (_position, _last_get_accurate);