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/options.h"
32 #include "lib/subtitle.h"
33 #include "lib/image.h"
34 #include "lib/scaler.h"
35 #include "lib/exceptions.h"
36 #include "lib/examine_content_job.h"
37 #include "lib/filter.h"
38 #include "film_viewer.h"
40 #include "video_decoder.h"
47 using boost::shared_ptr;
50 FilmViewer::FilmViewer (shared_ptr<Film> f, wxWindow* p)
52 , _panel (new wxPanel (this))
53 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
54 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
55 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
56 , _frame (new wxStaticText (this, wxID_ANY, wxT("")))
57 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
58 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
59 , _display_frame_x (0)
63 _panel->SetDoubleBuffered (true);
66 #if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
67 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
70 _v_sizer = new wxBoxSizer (wxVERTICAL);
73 _v_sizer->Add (_panel, 1, wxEXPAND);
75 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
77 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
78 time_sizer->Add (_frame, 0, wxEXPAND);
79 time_sizer->Add (_timecode, 0, wxEXPAND);
81 h_sizer->Add (_back_button, 0, wxALL, 2);
82 h_sizer->Add (time_sizer, 0, wxEXPAND);
83 h_sizer->Add (_forward_button, 0, wxALL, 2);
84 h_sizer->Add (_play_button, 0, wxEXPAND);
85 h_sizer->Add (_slider, 1, wxEXPAND);
87 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
89 _frame->SetMinSize (wxSize (84, -1));
90 _back_button->SetMinSize (wxSize (32, -1));
91 _forward_button->SetMinSize (wxSize (32, -1));
93 _panel->Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (FilmViewer::paint_panel), 0, this);
94 _panel->Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (FilmViewer::panel_sized), 0, this);
95 _slider->Connect (wxID_ANY, wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
96 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEUP, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
97 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEDOWN, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
98 _play_button->Connect (wxID_ANY, wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEventHandler (FilmViewer::play_clicked), 0, this);
99 _timer.Connect (wxID_ANY, wxEVT_TIMER, wxTimerEventHandler (FilmViewer::timer), 0, this);
100 _back_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::back_clicked), 0, this);
101 _forward_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::forward_clicked), 0, this);
105 JobManager::instance()->ActiveJobsChanged.connect (
106 bind (&FilmViewer::active_jobs_changed, this, _1)
111 FilmViewer::film_changed (Film::Property p)
121 o.decode_audio = false;
122 o.decode_subtitles = true;
123 o.video_sync = false;
126 _decoders = decoder_factory (_film, o);
127 } catch (StringError& e) {
128 error_dialog (this, wxString::Format (_("Could not open content file (%s)"), std_to_wx(e.what()).data()));
132 if (_decoders.video == 0) {
135 _decoders.video->set_subtitle_stream (_film->subtitle_stream());
136 _decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3, _4));
137 _decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));
141 _slider->Show (_film->content_type() == VIDEO);
142 _play_button->Show (_film->content_type() == VIDEO);
146 case Film::WITH_SUBTITLES:
147 case Film::SUBTITLE_OFFSET:
148 case Film::SUBTITLE_SCALE:
153 case Film::SUBTITLE_STREAM:
154 if (_decoders.video) {
155 _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
164 FilmViewer::set_film (shared_ptr<Film> f)
173 _display_frame.reset ();
181 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
183 film_changed (Film::CONTENT);
184 film_changed (Film::FORMAT);
185 film_changed (Film::WITH_SUBTITLES);
186 film_changed (Film::SUBTITLE_OFFSET);
187 film_changed (Film::SUBTITLE_SCALE);
188 film_changed (Film::SUBTITLE_STREAM);
192 FilmViewer::decoder_changed ()
194 if (_decoders.video == 0 || _decoders.video->seek_to_last ()) {
204 FilmViewer::timer (wxTimerEvent &)
206 if (!_film || !_decoders.video) {
212 if (_film->length()) {
213 int const new_slider_position = 4096 * _decoders.video->last_source_time() / (_film->length().get() / _film->source_frame_rate());
214 if (new_slider_position != _slider->GetValue()) {
215 _slider->SetValue (new_slider_position);
225 FilmViewer::paint_panel (wxPaintEvent &)
227 wxPaintDC dc (_panel);
229 if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
234 if (_display_frame_x) {
235 dc.SetPen(*wxBLACK_PEN);
236 dc.SetBrush(*wxBLACK_BRUSH);
237 dc.DrawRectangle (0, 0, _display_frame_x, _film_size.height);
238 dc.DrawRectangle (_display_frame_x + _film_size.width, 0, _display_frame_x, _film_size.height);
241 wxImage frame (_film_size.width, _film_size.height, _display_frame->data()[0], true);
242 wxBitmap frame_bitmap (frame);
243 dc.DrawBitmap (frame_bitmap, _display_frame_x, 0);
245 if (_film->with_subtitles() && _display_sub) {
246 wxImage sub (_display_sub->size().width, _display_sub->size().height, _display_sub->data()[0], _display_sub->alpha(), true);
247 wxBitmap sub_bitmap (sub);
248 dc.DrawBitmap (sub_bitmap, _display_sub_position.x, _display_sub_position.y);
251 if (_out_size.width < _panel_size.width) {
252 wxPen p (GetBackgroundColour ());
253 wxBrush b (GetBackgroundColour ());
256 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
259 if (_out_size.height < _panel_size.height) {
260 wxPen p (GetBackgroundColour ());
261 wxBrush b (GetBackgroundColour ());
264 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
270 FilmViewer::slider_moved (wxScrollEvent &)
272 if (!_film || !_film->length() || !_decoders.video) {
276 if (_decoders.video->seek (_slider->GetValue() * _film->length().get() / (4096 * _film->source_frame_rate()))) {
286 FilmViewer::panel_sized (wxSizeEvent& ev)
288 _panel_size.width = ev.GetSize().GetWidth();
289 _panel_size.height = ev.GetSize().GetHeight();
295 FilmViewer::update_from_raw ()
308 FilmViewer::raw_to_display ()
310 if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
314 boost::shared_ptr<const Image> input = _raw_frame;
316 pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
317 if (!s.second.empty ()) {
318 input = input->post_process (s.second, true);
321 /* Get a compacted image as we have to feed it to wxWidgets */
322 _display_frame = input->scale_and_convert_to_rgb (_film_size, 0, _film->scaler(), false);
326 /* Our output is already cropped by the decoder, so we need to account for that
327 when working out the scale that we are applying.
330 Size const cropped_size = _film->cropped_size (_film->size ());
332 dvdomatic::Rect tx = subtitle_transformed_area (
333 float (_film_size.width) / cropped_size.width,
334 float (_film_size.height) / cropped_size.height,
335 _raw_sub->area(), _film->subtitle_offset(), _film->subtitle_scale()
338 _display_sub.reset (new RGBPlusAlphaImage (_raw_sub->image()->scale (tx.size(), _film->scaler(), false)));
339 _display_sub_position = tx.position();
340 _display_sub_position.x += _display_frame_x;
342 _display_sub.reset ();
347 FilmViewer::calculate_sizes ()
353 Format const * format = _film->format ();
355 float const panel_ratio = static_cast<float> (_panel_size.width) / _panel_size.height;
356 float const film_ratio = format ? format->container_ratio () : 1.78;
358 if (panel_ratio < film_ratio) {
359 /* panel is less widscreen than the film; clamp width */
360 _out_size.width = _panel_size.width;
361 _out_size.height = _out_size.width / film_ratio;
363 /* panel is more widescreen than the film; clamp height */
364 _out_size.height = _panel_size.height;
365 _out_size.width = _out_size.height * film_ratio;
368 /* Work out how much padding there is in terms of our display; this will be the x position
369 of our _display_frame.
371 _display_frame_x = 0;
373 _display_frame_x = static_cast<float> (format->dcp_padding (_film)) * _out_size.width / format->dcp_size().width;
376 _film_size = _out_size;
377 _film_size.width -= _display_frame_x * 2;
379 /* Catch silly values */
380 if (_out_size.width < 64) {
381 _out_size.width = 64;
386 FilmViewer::play_clicked (wxCommandEvent &)
392 FilmViewer::check_play_state ()
398 if (_play_button->GetValue()) {
399 _timer.Start (1000 / _film->source_frame_rate());
406 FilmViewer::process_video (shared_ptr<const Image> image, bool, shared_ptr<Subtitle> sub, double t)
415 double const fps = _decoders.video->frames_per_second ();
416 /* Count frame number from 1 ... not sure if this is the best idea */
417 _frame->SetLabel (wxString::Format (wxT("%d"), int (rint (t * fps)) + 1));
420 int const h = (w / 3600);
422 int const m = (w / 60);
424 int const s = floor (w);
426 int const f = rint (w * fps);
427 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d:%02d"), h, m, s, f));
431 FilmViewer::get_frame ()
433 /* Clear our raw frame in case we don't get a new one */
436 if (_decoders.video == 0) {
437 _display_frame.reset ();
443 while (!_got_frame) {
444 if (_decoders.video->pass ()) {
445 /* We didn't get a frame before the decoder gave up,
446 so clear our display frame.
448 _display_frame.reset ();
452 } catch (DecodeError& e) {
453 _play_button->SetValue (false);
455 error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), std_to_wx(e.what()).data()));
460 FilmViewer::active_jobs_changed (bool a)
463 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
464 list<shared_ptr<Job> >::iterator i = jobs.begin ();
465 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
469 if (i == jobs.end() || (*i)->finished()) {
470 /* no examine content job running, so we're ok to use the viewer */
475 _slider->Enable (!a);
476 _play_button->Enable (!a);
480 FilmViewer::back_clicked (wxCommandEvent &)
482 if (!_decoders.video) {
486 _decoders.video->seek_back ();
493 FilmViewer::forward_clicked (wxCommandEvent &)
495 if (!_decoders.video) {
499 _decoders.video->seek_forward ();