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 , _ignore_player_changes (false)
74 , _last_get_accurate (true)
77 _panel->SetDoubleBuffered (true);
80 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
82 _v_sizer = new wxBoxSizer (wxVERTICAL);
85 _v_sizer->Add (_panel, 1, wxEXPAND);
87 _v_sizer->Add (_outline_content, 0, wxALL, DCPOMATIC_SIZER_GAP);
89 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
91 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
92 time_sizer->Add (_frame_number, 0, wxEXPAND);
93 time_sizer->Add (_timecode, 0, wxEXPAND);
95 h_sizer->Add (_back_button, 0, wxALL, 2);
96 h_sizer->Add (time_sizer, 0, wxEXPAND);
97 h_sizer->Add (_forward_button, 0, wxALL, 2);
98 h_sizer->Add (_play_button, 0, wxEXPAND);
99 h_sizer->Add (_slider, 1, wxEXPAND);
101 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
103 _frame_number->SetMinSize (wxSize (84, -1));
104 _back_button->SetMinSize (wxSize (32, -1));
105 _forward_button->SetMinSize (wxSize (32, -1));
107 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
108 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
109 _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this));
110 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
111 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
112 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
113 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
114 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
115 _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this));
116 _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this));
118 set_film (shared_ptr<Film> ());
120 JobManager::instance()->ActiveJobsChanged.connect (
121 bind (&FilmViewer::active_jobs_changed, this, _2)
124 setup_sensitivity ();
128 FilmViewer::set_film (shared_ptr<Film> film)
138 update_position_slider ();
139 update_position_label ();
146 _player.reset (new Player (_film, _film->playlist ()));
147 } catch (bad_alloc) {
148 error_dialog (this, _("There is not enough free memory to do that."));
153 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
156 _player->set_always_burn_subtitles (true);
157 _player->set_ignore_audio ();
158 _player->set_play_referenced ();
160 _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
162 _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
167 setup_sensitivity ();
171 FilmViewer::refresh_panel ()
178 FilmViewer::get (DCPTime p, bool accurate)
184 list<shared_ptr<PlayerVideo> > pvf;
186 pvf = _player->get_video (p, accurate);
187 } catch (exception& e) {
188 error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data()));
193 /* XXX: this could now give us a 48-bit image, which is a bit wasteful,
194 or a XYZ image, which the code below will currently rely on FFmpeg
195 to colourspace-convert.
197 _frame = pvf.front()->image (boost::bind (&Log::dcp_log, _film->log().get(), _1, _2));
198 ImageChanged (pvf.front ());
200 dcp::YUVToRGB yuv_to_rgb = dcp::YUV_TO_RGB_REC601;
201 if (pvf.front()->colour_conversion()) {
202 yuv_to_rgb = pvf.front()->colour_conversion().get().yuv_to_rgb();
205 _frame = _frame->scale (_frame->size(), yuv_to_rgb, AV_PIX_FMT_RGB24, false);
206 _position = pvf.front()->time ();
207 _inter_position = pvf.front()->inter_position ();
208 _inter_size = pvf.front()->inter_size ();
209 } catch (dcp::DCPReadError& e) {
210 /* This can happen on the following sequence of events:
211 * - load encrypted DCP
213 * - DCP is examined again, which sets its "playable" flag to 1
214 * - as a side effect of the exam, the viewer is updated using the old pieces
215 * - the DCPDecoder in the old piece gives us an encrypted frame
216 * - then, the pieces are re-made (but too late).
218 * I hope there's a better way to handle this ...
230 _last_get_accurate = accurate;
236 DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
238 if ((_position + frame) >= _film->length ()) {
239 _play_button->SetValue (false);
242 get (_position + frame, true);
245 update_position_label ();
246 update_position_slider ();
250 FilmViewer::paint_panel ()
252 wxPaintDC dc (_panel);
254 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
259 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
260 wxBitmap frame_bitmap (frame);
261 dc.DrawBitmap (frame_bitmap, 0, 0);
263 if (_out_size.width < _panel_size.width) {
264 wxPen p (GetBackgroundColour ());
265 wxBrush b (GetBackgroundColour ());
268 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
271 if (_out_size.height < _panel_size.height) {
272 wxPen p (GetBackgroundColour ());
273 wxBrush b (GetBackgroundColour ());
276 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
279 if (_outline_content->GetValue ()) {
280 wxPen p (wxColour (255, 0, 0), 2);
282 dc.SetBrush (*wxTRANSPARENT_BRUSH);
283 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
288 FilmViewer::slider_moved ()
294 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
295 /* Ensure that we hit the end of the film at the end of the slider */
296 if (t >= _film->length ()) {
297 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
300 update_position_label ();
304 FilmViewer::panel_sized (wxSizeEvent& ev)
306 _panel_size.width = ev.GetSize().GetWidth();
307 _panel_size.height = ev.GetSize().GetHeight();
311 update_position_label ();
312 update_position_slider ();
316 FilmViewer::calculate_sizes ()
318 if (!_film || !_player) {
322 Ratio const * container = _film->container ();
324 float const panel_ratio = _panel_size.ratio ();
325 float const film_ratio = container ? container->ratio () : 1.78;
327 if (panel_ratio < film_ratio) {
328 /* panel is less widscreen than the film; clamp width */
329 _out_size.width = _panel_size.width;
330 _out_size.height = lrintf (_out_size.width / film_ratio);
332 /* panel is more widescreen than the film; clamp height */
333 _out_size.height = _panel_size.height;
334 _out_size.width = lrintf (_out_size.height * film_ratio);
337 /* Catch silly values */
338 _out_size.width = max (64, _out_size.width);
339 _out_size.height = max (64, _out_size.height);
341 _player->set_video_container_size (_out_size);
345 FilmViewer::play_clicked ()
351 FilmViewer::check_play_state ()
353 if (!_film || _film->video_frame_rate() == 0) {
357 if (_play_button->GetValue()) {
358 _timer.Start (1000 / _film->video_frame_rate());
365 FilmViewer::update_position_slider ()
368 _slider->SetValue (0);
372 DCPTime const len = _film->length ();
375 int const new_slider_position = 4096 * _position.get() / len.get();
376 if (new_slider_position != _slider->GetValue()) {
377 _slider->SetValue (new_slider_position);
383 FilmViewer::update_position_label ()
386 _frame_number->SetLabel ("0");
387 _timecode->SetLabel ("0:0:0.0");
391 double const fps = _film->video_frame_rate ();
392 /* Count frame number from 1 ... not sure if this is the best idea */
393 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
394 _timecode->SetLabel (time_to_timecode (_position, fps));
398 FilmViewer::active_jobs_changed (optional<string> j)
400 /* examine content is the only job which stops the viewer working */
401 bool const a = !j || *j != "examine_content";
403 _play_button->Enable (a);
407 FilmViewer::back_clicked ()
409 DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ());
410 if (p < DCPTime ()) {
415 update_position_label ();
416 update_position_slider ();
420 FilmViewer::forward_clicked ()
422 DCPTime p = _position + DCPTime::from_frames (1, _film->video_frame_rate ());
423 if (p >= _film->length ()) {
428 update_position_label ();
429 update_position_slider ();
433 FilmViewer::player_changed (bool frequent)
435 if (frequent || _ignore_player_changes) {
441 update_position_label ();
442 update_position_slider ();
446 FilmViewer::setup_sensitivity ()
448 bool const c = _film && !_film->content().empty ();
451 _back_button->Enable (c);
452 _forward_button->Enable (c);
453 _play_button->Enable (c);
454 _outline_content->Enable (c);
455 _frame_number->Enable (c);
456 _timecode->Enable (c);
460 FilmViewer::film_changed (Film::Property p)
462 if (p == Film::CONTENT) {
463 setup_sensitivity ();
467 /** Re-get the current frame */
469 FilmViewer::refresh ()
471 get (_position, _last_get_accurate);
475 FilmViewer::set_position (DCPTime p)
478 get (_position, true);
479 update_position_label ();
480 update_position_slider ();
484 FilmViewer::set_ignore_player_changes (bool i)
486 _ignore_player_changes = i;