2 Copyright (C) 2012-2014 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.
26 #include <wx/tglbtn.h>
27 #include <dcp/exceptions.h>
29 #include "lib/ratio.h"
31 #include "lib/job_manager.h"
32 #include "lib/image.h"
33 #include "lib/scaler.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 "film_viewer.h"
53 using boost::shared_ptr;
54 using boost::dynamic_pointer_cast;
55 using boost::weak_ptr;
58 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
60 , _panel (new wxPanel (this))
61 , _outline_content (new wxCheckBox (this, wxID_ANY, _("Outline content")))
62 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
63 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
64 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
65 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
66 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
67 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
68 , _last_get_accurate (true)
71 _panel->SetDoubleBuffered (true);
74 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
76 _v_sizer = new wxBoxSizer (wxVERTICAL);
79 _v_sizer->Add (_panel, 1, wxEXPAND);
81 _v_sizer->Add (_outline_content, 0, wxALL, DCPOMATIC_SIZER_GAP);
83 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
85 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
86 time_sizer->Add (_frame_number, 0, wxEXPAND);
87 time_sizer->Add (_timecode, 0, wxEXPAND);
89 h_sizer->Add (_back_button, 0, wxALL, 2);
90 h_sizer->Add (time_sizer, 0, wxEXPAND);
91 h_sizer->Add (_forward_button, 0, wxALL, 2);
92 h_sizer->Add (_play_button, 0, wxEXPAND);
93 h_sizer->Add (_slider, 1, wxEXPAND);
95 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
97 _frame_number->SetMinSize (wxSize (84, -1));
98 _back_button->SetMinSize (wxSize (32, -1));
99 _forward_button->SetMinSize (wxSize (32, -1));
101 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
102 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
103 _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this));
104 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
105 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
106 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
107 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
108 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
109 _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this));
110 _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this));
114 JobManager::instance()->ActiveJobsChanged.connect (
115 bind (&FilmViewer::active_jobs_changed, this, _1)
120 FilmViewer::set_film (shared_ptr<Film> f)
130 _slider->SetValue (0);
131 set_position_text ();
138 _player = f->make_player ();
139 } catch (bad_alloc) {
140 error_dialog (this, _("There is not enough free memory to do that."));
145 _player->set_approximate_size ();
146 _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
149 get (_position, _last_get_accurate);
153 FilmViewer::refresh_panel ()
160 FilmViewer::get (DCPTime p, bool accurate)
166 list<shared_ptr<PlayerVideo> > pvf = _player->get_video (p, accurate);
169 _frame = pvf.front()->image (true);
170 _frame = _frame->scale (_frame->size(), Scaler::from_id ("fastbilinear"), PIX_FMT_RGB24, false);
171 _position = pvf.front()->time ();
172 _inter_position = pvf.front()->inter_position ();
173 _inter_size = pvf.front()->inter_size ();
174 } catch (dcp::DCPReadError& e) {
175 /* This can happen on the following sequence of events:
176 * - load encrypted DCP
178 * - DCP is examined again, which sets its "playable" flag to 1
179 * - as a side effect of the exam, the viewer is updated using the old pieces
180 * - the DCPDecoder in the old piece gives us an encrypted frame
181 * - then, the pieces are re-made (but too late).
183 * I hope there's a better way to handle this ...
193 set_position_text ();
196 _last_get_accurate = accurate;
202 get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true);
204 DCPTime const len = _film->length ();
207 int const new_slider_position = 4096 * _position.get() / len.get();
208 if (new_slider_position != _slider->GetValue()) {
209 _slider->SetValue (new_slider_position);
216 FilmViewer::paint_panel ()
218 wxPaintDC dc (_panel);
220 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
225 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
226 wxBitmap frame_bitmap (frame);
227 dc.DrawBitmap (frame_bitmap, 0, 0);
229 if (_out_size.width < _panel_size.width) {
230 wxPen p (GetBackgroundColour ());
231 wxBrush b (GetBackgroundColour ());
234 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
237 if (_out_size.height < _panel_size.height) {
238 wxPen p (GetBackgroundColour ());
239 wxBrush b (GetBackgroundColour ());
242 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
245 if (_outline_content->GetValue ()) {
246 wxPen p (wxColour (255, 0, 0), 2);
248 dc.SetBrush (*wxTRANSPARENT_BRUSH);
249 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
254 FilmViewer::slider_moved ()
260 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
261 /* Ensure that we hit the end of the film at the end of the slider */
262 if (t >= _film->length ()) {
263 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
269 FilmViewer::panel_sized (wxSizeEvent& ev)
271 _panel_size.width = ev.GetSize().GetWidth();
272 _panel_size.height = ev.GetSize().GetHeight();
275 get (_position, _last_get_accurate);
279 FilmViewer::calculate_sizes ()
281 if (!_film || !_player) {
285 Ratio const * container = _film->container ();
287 float const panel_ratio = _panel_size.ratio ();
288 float const film_ratio = container ? container->ratio () : 1.78;
290 if (panel_ratio < film_ratio) {
291 /* panel is less widscreen than the film; clamp width */
292 _out_size.width = _panel_size.width;
293 _out_size.height = rint (_out_size.width / film_ratio);
295 /* panel is more widescreen than the film; clamp height */
296 _out_size.height = _panel_size.height;
297 _out_size.width = rint (_out_size.height * film_ratio);
300 /* Catch silly values */
301 _out_size.width = max (64, _out_size.width);
302 _out_size.height = max (64, _out_size.height);
304 /* The player will round its image size down to the next lowest 4 pixels
305 to speed up its scale, so do similar here to avoid black borders
306 around things. This is a bit of a hack.
308 _out_size.width &= ~3;
309 _out_size.height &= ~3;
311 _player->set_video_container_size (_out_size);
315 FilmViewer::play_clicked ()
321 FilmViewer::check_play_state ()
323 if (!_film || _film->video_frame_rate() == 0) {
327 if (_play_button->GetValue()) {
328 _timer.Start (1000 / _film->video_frame_rate());
335 FilmViewer::set_position_text ()
338 _frame_number->SetLabel ("0");
339 _timecode->SetLabel ("0:0:0.0");
343 double const fps = _film->video_frame_rate ();
344 /* Count frame number from 1 ... not sure if this is the best idea */
345 _frame_number->SetLabel (wxString::Format (wxT("%d"), int (rint (_position.seconds() * fps)) + 1));
347 double w = _position.seconds ();
348 int const h = (w / 3600);
350 int const m = (w / 60);
352 int const s = floor (w);
354 int const f = rint (w * fps);
355 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d.%02d"), h, m, s, f));
359 FilmViewer::active_jobs_changed (bool a)
362 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
363 list<shared_ptr<Job> >::iterator i = jobs.begin ();
364 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
368 if (i == jobs.end() || (*i)->finished()) {
369 /* no examine content job running, so we're ok to use the viewer */
374 _slider->Enable (!a);
375 _play_button->Enable (!a);
379 FilmViewer::back_clicked ()
381 DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ());
382 if (p < DCPTime ()) {
390 FilmViewer::forward_clicked ()
392 get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true);
396 FilmViewer::player_changed (bool frequent)
403 get (_position, _last_get_accurate);