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/format.h"
30 #include "lib/job_manager.h"
31 #include "lib/subtitle.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/video_content.h"
39 #include "lib/ffmpeg_content.h"
40 #include "lib/imagemagick_content.h"
41 #include "film_viewer.h"
43 #include "video_decoder.h"
50 using boost::shared_ptr;
51 using boost::dynamic_pointer_cast;
52 using boost::weak_ptr;
55 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
57 , _panel (new wxPanel (this))
58 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
59 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
60 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
61 , _frame (new wxStaticText (this, wxID_ANY, wxT("")))
62 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
63 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
64 , _display_frame_x (0)
67 _panel->SetDoubleBuffered (true);
68 #if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
69 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
72 _v_sizer = new wxBoxSizer (wxVERTICAL);
75 _v_sizer->Add (_panel, 1, wxEXPAND);
77 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
79 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
80 time_sizer->Add (_frame, 0, wxEXPAND);
81 time_sizer->Add (_timecode, 0, wxEXPAND);
83 h_sizer->Add (_back_button, 0, wxALL, 2);
84 h_sizer->Add (time_sizer, 0, wxEXPAND);
85 h_sizer->Add (_forward_button, 0, wxALL, 2);
86 h_sizer->Add (_play_button, 0, wxEXPAND);
87 h_sizer->Add (_slider, 1, wxEXPAND);
89 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
91 _frame->SetMinSize (wxSize (84, -1));
92 _back_button->SetMinSize (wxSize (32, -1));
93 _forward_button->SetMinSize (wxSize (32, -1));
95 _panel->Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (FilmViewer::paint_panel), 0, this);
96 _panel->Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (FilmViewer::panel_sized), 0, this);
97 _slider->Connect (wxID_ANY, wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
98 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEUP, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
99 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEDOWN, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
100 _play_button->Connect (wxID_ANY, wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEventHandler (FilmViewer::play_clicked), 0, this);
101 _timer.Connect (wxID_ANY, wxEVT_TIMER, wxTimerEventHandler (FilmViewer::timer), 0, this);
102 _back_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::back_clicked), 0, this);
103 _forward_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::forward_clicked), 0, this);
107 JobManager::instance()->ActiveJobsChanged.connect (
108 bind (&FilmViewer::active_jobs_changed, this, _1)
113 FilmViewer::film_changed (Film::Property p)
126 case Film::WITH_SUBTITLES:
127 case Film::SUBTITLE_OFFSET:
128 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, _4));
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::FORMAT);
174 film_changed (Film::WITH_SUBTITLES);
175 film_changed (Film::SUBTITLE_OFFSET);
176 film_changed (Film::SUBTITLE_SCALE);
180 FilmViewer::update_from_decoder ()
182 if (!_player || _player->seek (_player->last_video_time ())) {
192 FilmViewer::timer (wxTimerEvent &)
203 if (_film->video_length()) {
204 int const new_slider_position = 4096 * _player->last_video_time() / (_film->video_length() / _film->video_frame_rate());
205 if (new_slider_position != _slider->GetValue()) {
206 _slider->SetValue (new_slider_position);
213 FilmViewer::paint_panel (wxPaintEvent &)
215 wxPaintDC dc (_panel);
217 if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
222 if (_display_frame_x) {
223 dc.SetPen(*wxBLACK_PEN);
224 dc.SetBrush(*wxBLACK_BRUSH);
225 dc.DrawRectangle (0, 0, _display_frame_x, _film_size.height);
226 dc.DrawRectangle (_display_frame_x + _film_size.width, 0, _display_frame_x, _film_size.height);
229 wxImage frame (_film_size.width, _film_size.height, _display_frame->data()[0], true);
230 wxBitmap frame_bitmap (frame);
231 dc.DrawBitmap (frame_bitmap, _display_frame_x, 0);
233 if (_film->with_subtitles() && _display_sub) {
234 wxImage sub (_display_sub->size().width, _display_sub->size().height, _display_sub->data()[0], _display_sub->alpha(), true);
235 wxBitmap sub_bitmap (sub);
236 dc.DrawBitmap (sub_bitmap, _display_sub_position.x, _display_sub_position.y);
239 if (_out_size.width < _panel_size.width) {
240 wxPen p (GetBackgroundColour ());
241 wxBrush b (GetBackgroundColour ());
244 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
247 if (_out_size.height < _panel_size.height) {
248 wxPen p (GetBackgroundColour ());
249 wxBrush b (GetBackgroundColour ());
252 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
258 FilmViewer::slider_moved (wxScrollEvent &)
260 if (!_film || !_player) {
264 if (_player->seek (_slider->GetValue() * _film->video_length() / (4096 * _film->video_frame_rate()))) {
274 FilmViewer::panel_sized (wxSizeEvent& ev)
276 _panel_size.width = ev.GetSize().GetWidth();
277 _panel_size.height = ev.GetSize().GetHeight();
283 FilmViewer::update_from_raw ()
296 FilmViewer::raw_to_display ()
298 if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
302 shared_ptr<Image> input = _raw_frame;
304 pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
305 if (!s.second.empty ()) {
306 input = input->post_process (s.second, true);
309 /* Get a compacted image as we have to feed it to wxWidgets */
310 _display_frame = input->scale_and_convert_to_rgb (_film_size, 0, _film->scaler(), false);
314 /* Our output is already cropped by the decoder, so we need to account for that
315 when working out the scale that we are applying.
318 Size const cropped_size = _film->cropped_size (_film->video_size ());
320 Rect tx = subtitle_transformed_area (
321 float (_film_size.width) / cropped_size.width,
322 float (_film_size.height) / cropped_size.height,
323 _raw_sub->area(), _film->subtitle_offset(), _film->subtitle_scale()
326 _display_sub.reset (new RGBPlusAlphaImage (_raw_sub->image()->scale (tx.size(), _film->scaler(), false)));
327 _display_sub_position = tx.position();
328 _display_sub_position.x += _display_frame_x;
330 _display_sub.reset ();
335 FilmViewer::calculate_sizes ()
337 if (!_film || !_player) {
341 Format const * format = _film->format ();
343 float const panel_ratio = static_cast<float> (_panel_size.width) / _panel_size.height;
344 float const film_ratio = format ? format->container_ratio () : 1.78;
346 if (panel_ratio < film_ratio) {
347 /* panel is less widscreen than the film; clamp width */
348 _out_size.width = _panel_size.width;
349 _out_size.height = _out_size.width / film_ratio;
351 /* panel is more widescreen than the film; clamp height */
352 _out_size.height = _panel_size.height;
353 _out_size.width = _out_size.height * film_ratio;
356 /* Work out how much padding there is in terms of our display; this will be the x position
357 of our _display_frame.
359 _display_frame_x = 0;
361 _display_frame_x = static_cast<float> (format->dcp_padding (_film)) * _out_size.width / format->dcp_size().width;
364 _film_size = _out_size;
365 _film_size.width -= _display_frame_x * 2;
367 /* Catch silly values */
368 if (_out_size.width < 64) {
369 _out_size.width = 64;
374 FilmViewer::play_clicked (wxCommandEvent &)
380 FilmViewer::check_play_state ()
386 if (_play_button->GetValue()) {
387 _timer.Start (1000 / _film->video_frame_rate());
394 FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub, double t)
403 double const fps = _film->video_frame_rate ();
404 _frame->SetLabel (wxString::Format (wxT("%d"), int (rint (t * fps))));
407 int const h = (w / 3600);
409 int const m = (w / 60);
411 int const s = floor (w);
413 int const f = rint (w * fps);
414 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d:%02d"), h, m, s, f));
417 /** Get a new _raw_frame from the decoder and then do
421 FilmViewer::get_frame ()
423 /* Clear our raw frame in case we don't get a new one */
427 _display_frame.reset ();
433 while (!_got_frame) {
434 if (_player->pass ()) {
435 /* We didn't get a frame before the decoder gave up,
436 so clear our display frame.
438 _display_frame.reset ();
442 } catch (DecodeError& e) {
443 _play_button->SetValue (false);
445 error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), std_to_wx(e.what()).data()));
450 FilmViewer::active_jobs_changed (bool a)
453 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
454 list<shared_ptr<Job> >::iterator i = jobs.begin ();
455 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
459 if (i == jobs.end() || (*i)->finished()) {
460 /* no examine content job running, so we're ok to use the viewer */
465 _slider->Enable (!a);
466 _play_button->Enable (!a);
470 FilmViewer::film_content_changed (weak_ptr<Content>, int p)
472 if (p == VideoContentProperty::VIDEO_LENGTH) {
473 /* Force an update to our frame */
480 FilmViewer::back_clicked (wxCommandEvent &)
486 _player->seek_back ();
493 FilmViewer::forward_clicked (wxCommandEvent &)
499 _player->seek_forward ();