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>
28 #include "lib/ratio.h"
30 #include "lib/job_manager.h"
31 #include "lib/image.h"
32 #include "lib/scaler.h"
33 #include "lib/exceptions.h"
34 #include "lib/examine_content_job.h"
35 #include "lib/filter.h"
36 #include "lib/player.h"
37 #include "lib/video_content.h"
38 #include "lib/video_decoder.h"
39 #include "lib/timer.h"
40 #include "lib/dcp_video.h"
41 #include "film_viewer.h"
52 using boost::shared_ptr;
53 using boost::dynamic_pointer_cast;
54 using boost::weak_ptr;
57 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
59 , _panel (new wxPanel (this))
60 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
61 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
62 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
63 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
64 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
65 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
68 _panel->SetDoubleBuffered (true);
71 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
73 _v_sizer = new wxBoxSizer (wxVERTICAL);
76 _v_sizer->Add (_panel, 1, wxEXPAND);
78 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
80 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
81 time_sizer->Add (_frame_number, 0, wxEXPAND);
82 time_sizer->Add (_timecode, 0, wxEXPAND);
84 h_sizer->Add (_back_button, 0, wxALL, 2);
85 h_sizer->Add (time_sizer, 0, wxEXPAND);
86 h_sizer->Add (_forward_button, 0, wxALL, 2);
87 h_sizer->Add (_play_button, 0, wxEXPAND);
88 h_sizer->Add (_slider, 1, wxEXPAND);
90 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
92 _frame_number->SetMinSize (wxSize (84, -1));
93 _back_button->SetMinSize (wxSize (32, -1));
94 _forward_button->SetMinSize (wxSize (32, -1));
96 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
97 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
98 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this));
99 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this));
100 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this));
101 _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this));
102 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
103 _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this));
104 _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this));
108 JobManager::instance()->ActiveJobsChanged.connect (
109 bind (&FilmViewer::active_jobs_changed, this, _1)
114 FilmViewer::set_film (shared_ptr<Film> f)
124 _slider->SetValue (0);
125 set_position_text ();
132 _player = f->make_player ();
133 } catch (bad_alloc) {
134 error_dialog (this, _("There is not enough free memory to do that."));
139 _player->set_approximate_size ();
140 _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
143 get (_position, true);
147 FilmViewer::get (DCPTime p, bool accurate)
153 list<shared_ptr<DCPVideo> > dcp_video = _player->get_video (p, accurate);
154 if (!dcp_video.empty ()) {
155 _frame = dcp_video.front()->image (PIX_FMT_BGRA, true);
156 _frame = _frame->scale (_frame->size(), Scaler::from_id ("fastbilinear"), PIX_FMT_RGB24, false);
163 set_position_text ();
171 get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true);
173 DCPTime const len = _film->length ();
176 int const new_slider_position = 4096 * _position.get() / len.get();
177 if (new_slider_position != _slider->GetValue()) {
178 _slider->SetValue (new_slider_position);
185 FilmViewer::paint_panel ()
187 wxPaintDC dc (_panel);
189 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
194 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
195 wxBitmap frame_bitmap (frame);
196 dc.DrawBitmap (frame_bitmap, 0, 0);
198 if (_out_size.width < _panel_size.width) {
199 wxPen p (GetBackgroundColour ());
200 wxBrush b (GetBackgroundColour ());
203 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
206 if (_out_size.height < _panel_size.height) {
207 wxPen p (GetBackgroundColour ());
208 wxBrush b (GetBackgroundColour ());
211 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
217 FilmViewer::slider_moved ()
223 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
224 /* Ensure that we hit the end of the film at the end of the slider */
225 if (t >= _film->length ()) {
226 t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ());
232 FilmViewer::panel_sized (wxSizeEvent& ev)
234 _panel_size.width = ev.GetSize().GetWidth();
235 _panel_size.height = ev.GetSize().GetHeight();
237 get (_position, true);
241 FilmViewer::calculate_sizes ()
243 if (!_film || !_player) {
247 Ratio const * container = _film->container ();
249 float const panel_ratio = _panel_size.ratio ();
250 float const film_ratio = container ? container->ratio () : 1.78;
252 if (panel_ratio < film_ratio) {
253 /* panel is less widscreen than the film; clamp width */
254 _out_size.width = _panel_size.width;
255 _out_size.height = _out_size.width / film_ratio;
257 /* panel is more widescreen than the film; clamp height */
258 _out_size.height = _panel_size.height;
259 _out_size.width = _out_size.height * film_ratio;
262 /* Catch silly values */
263 _out_size.width = max (64, _out_size.width);
264 _out_size.height = max (64, _out_size.height);
266 /* The player will round its image down to the nearest 4 pixels
267 to speed up its scale, so do similar here to avoid black borders
268 around things. This is a bit of a hack.
270 _out_size.width &= ~3;
271 _out_size.height &= ~3;
273 _player->set_video_container_size (_out_size);
277 FilmViewer::play_clicked ()
283 FilmViewer::check_play_state ()
285 if (!_film || _film->video_frame_rate() == 0) {
289 if (_play_button->GetValue()) {
290 _timer.Start (1000 / _film->video_frame_rate());
297 FilmViewer::set_position_text ()
300 _frame_number->SetLabel ("0");
301 _timecode->SetLabel ("0:0:0.0");
305 double const fps = _film->video_frame_rate ();
306 /* Count frame number from 1 ... not sure if this is the best idea */
307 _frame_number->SetLabel (wxString::Format (wxT("%d"), int (rint (_position.seconds() * fps)) + 1));
309 double w = _position.seconds ();
310 int const h = (w / 3600);
312 int const m = (w / 60);
314 int const s = floor (w);
316 int const f = rint (w * fps);
317 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d.%02d"), h, m, s, f));
321 FilmViewer::active_jobs_changed (bool a)
324 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
325 list<shared_ptr<Job> >::iterator i = jobs.begin ();
326 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
330 if (i == jobs.end() || (*i)->finished()) {
331 /* no examine content job running, so we're ok to use the viewer */
336 _slider->Enable (!a);
337 _play_button->Enable (!a);
341 FilmViewer::back_clicked ()
343 DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ());
344 if (p < DCPTime ()) {
352 FilmViewer::forward_clicked ()
354 get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true);
358 FilmViewer::player_changed (bool frequent)
365 get (_position, true);