2 Copyright (C) 2012 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/ffmpeg_content.h"
39 #include "lib/imagemagick_content.h"
40 #include "film_viewer.h"
42 #include "video_decoder.h"
49 using boost::shared_ptr;
50 using boost::dynamic_pointer_cast;
51 using boost::weak_ptr;
54 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
56 , _panel (new wxPanel (this))
57 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
58 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
59 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
60 , _frame (new wxStaticText (this, wxID_ANY, wxT("")))
61 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
62 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
66 _panel->SetDoubleBuffered (true);
69 #if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
70 _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, 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->SetMinSize (wxSize (84, -1));
93 _back_button->SetMinSize (wxSize (32, -1));
94 _forward_button->SetMinSize (wxSize (32, -1));
96 _panel->Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (FilmViewer::paint_panel), 0, this);
97 _panel->Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (FilmViewer::panel_sized), 0, this);
98 _slider->Connect (wxID_ANY, wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
99 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEUP, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
100 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEDOWN, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
101 _play_button->Connect (wxID_ANY, wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEventHandler (FilmViewer::play_clicked), 0, this);
102 _timer.Connect (wxID_ANY, wxEVT_TIMER, wxTimerEventHandler (FilmViewer::timer), 0, this);
103 _back_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::back_clicked), 0, this);
104 _forward_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::forward_clicked), 0, this);
108 JobManager::instance()->ActiveJobsChanged.connect (
109 bind (&FilmViewer::active_jobs_changed, this, _1)
114 FilmViewer::film_changed (Film::Property p)
117 case Film::CONTAINER:
128 case Film::WITH_SUBTITLES:
129 case Film::SUBTITLE_OFFSET:
130 case Film::SUBTITLE_SCALE:
136 update_from_decoder ();
144 FilmViewer::set_film (shared_ptr<Film> f)
153 _display_frame.reset ();
161 _player = f->player ();
162 _player->disable_audio ();
163 /* Don't disable subtitles here as we may need them, and it's nice to be able to turn them
164 on and off without needing obtain a new Player.
167 _player->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3));
169 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
170 _film->ContentChanged.connect (boost::bind (&FilmViewer::film_content_changed, this, _1, _2));
172 film_changed (Film::CONTENT);
173 film_changed (Film::CONTAINER);
174 film_changed (Film::WITH_SUBTITLES);
175 film_changed (Film::SUBTITLE_OFFSET);
176 film_changed (Film::SUBTITLE_SCALE);
180 FilmViewer::update_from_decoder ()
186 _player->seek (_player->position() - _film->video_frames_to_time (1));
193 FilmViewer::timer (wxTimerEvent &)
201 if (_film->length()) {
202 int const new_slider_position = 4096 * _player->position() / _film->length();
203 if (new_slider_position != _slider->GetValue()) {
204 _slider->SetValue (new_slider_position);
214 FilmViewer::paint_panel (wxPaintEvent &)
216 wxPaintDC dc (_panel);
218 if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
223 wxImage frame (_out_size.width, _out_size.height, _display_frame->data()[0], true);
224 wxBitmap frame_bitmap (frame);
225 dc.DrawBitmap (frame_bitmap, 0, 0);
227 if (_out_size.width < _panel_size.width) {
228 wxPen p (GetBackgroundColour ());
229 wxBrush b (GetBackgroundColour ());
232 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
235 if (_out_size.height < _panel_size.height) {
236 wxPen p (GetBackgroundColour ());
237 wxBrush b (GetBackgroundColour ());
240 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
246 FilmViewer::slider_moved (wxScrollEvent &)
248 cout << "slider " << _slider->GetValue() << " " << _film->length() << "\n";
250 if (_film && _player) {
251 _player->seek (_slider->GetValue() * _film->length() / 4096);
260 FilmViewer::panel_sized (wxSizeEvent& ev)
262 _panel_size.width = ev.GetSize().GetWidth();
263 _panel_size.height = ev.GetSize().GetHeight();
269 FilmViewer::update_from_raw ()
282 FilmViewer::raw_to_display ()
284 if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
288 /* Get a compacted image as we have to feed it to wxWidgets */
289 _display_frame.reset (new SimpleImage (_raw_frame, false));
293 FilmViewer::calculate_sizes ()
295 if (!_film || !_player) {
299 Ratio const * container = _film->container ();
301 float const panel_ratio = static_cast<float> (_panel_size.width) / _panel_size.height;
302 float const film_ratio = container ? container->ratio () : 1.78;
304 if (panel_ratio < film_ratio) {
305 /* panel is less widscreen than the film; clamp width */
306 _out_size.width = _panel_size.width;
307 _out_size.height = _out_size.width / film_ratio;
309 /* panel is more widescreen than the film; clamp height */
310 _out_size.height = _panel_size.height;
311 _out_size.width = _out_size.height * film_ratio;
314 /* Catch silly values */
315 if (_out_size.width < 64) {
316 _out_size.width = 64;
319 _player->set_video_container_size (_out_size);
323 FilmViewer::play_clicked (wxCommandEvent &)
329 FilmViewer::check_play_state ()
331 if (!_film || _film->dcp_video_frame_rate() == 0) {
335 if (_play_button->GetValue()) {
336 _timer.Start (1000 / _film->dcp_video_frame_rate());
343 FilmViewer::process_video (shared_ptr<const Image> image, bool, Time t)
351 double const fps = _film->dcp_video_frame_rate ();
352 /* Count frame number from 1 ... not sure if this is the best idea */
353 _frame->SetLabel (wxString::Format (wxT("%d"), int (rint (t * fps / TIME_HZ)) + 1));
355 double w = static_cast<double>(t) / TIME_HZ;
356 int const h = (w / 3600);
358 int const m = (w / 60);
360 int const s = floor (w);
362 int const f = rint (w * fps);
363 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d:%02d"), h, m, s, f));
366 /** Get a new _raw_frame from the decoder and then do
370 FilmViewer::get_frame ()
372 /* Clear our raw frame in case we don't get a new one */
376 _display_frame.reset ();
382 while (!_got_frame) {
383 if (_player->pass ()) {
384 /* We didn't get a frame before the decoder gave up,
385 so clear our display frame.
387 _display_frame.reset ();
391 } catch (DecodeError& e) {
392 _play_button->SetValue (false);
394 error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), std_to_wx(e.what()).data()));
399 FilmViewer::active_jobs_changed (bool a)
402 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
403 list<shared_ptr<Job> >::iterator i = jobs.begin ();
404 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
408 if (i == jobs.end() || (*i)->finished()) {
409 /* no examine content job running, so we're ok to use the viewer */
414 _slider->Enable (!a);
415 _play_button->Enable (!a);
419 FilmViewer::film_content_changed (weak_ptr<Content>, int p)
421 if (p == ContentProperty::LENGTH) {
422 /* Force an update to our frame */
425 } else if (p == VideoContentProperty::VIDEO_CROP) {
426 update_from_decoder ();
431 FilmViewer::back_clicked (wxCommandEvent &)
437 _player->seek_back ();
444 FilmViewer::forward_clicked (wxCommandEvent &)
450 _player->seek_forward ();