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)
62 _panel->SetDoubleBuffered (true);
63 #if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
64 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
67 _v_sizer = new wxBoxSizer (wxVERTICAL);
70 _v_sizer->Add (_panel, 1, wxEXPAND);
72 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
74 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
75 time_sizer->Add (_frame, 0, wxEXPAND);
76 time_sizer->Add (_timecode, 0, wxEXPAND);
78 h_sizer->Add (_back_button, 0, wxALL, 2);
79 h_sizer->Add (time_sizer, 0, wxEXPAND);
80 h_sizer->Add (_forward_button, 0, wxALL, 2);
81 h_sizer->Add (_play_button, 0, wxEXPAND);
82 h_sizer->Add (_slider, 1, wxEXPAND);
84 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
86 _frame->SetMinSize (wxSize (84, -1));
87 _back_button->SetMinSize (wxSize (32, -1));
88 _forward_button->SetMinSize (wxSize (32, -1));
90 _panel->Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (FilmViewer::paint_panel), 0, this);
91 _panel->Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (FilmViewer::panel_sized), 0, this);
92 _slider->Connect (wxID_ANY, wxEVT_SCROLL_THUMBTRACK, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
93 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEUP, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
94 _slider->Connect (wxID_ANY, wxEVT_SCROLL_PAGEDOWN, wxScrollEventHandler (FilmViewer::slider_moved), 0, this);
95 _play_button->Connect (wxID_ANY, wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEventHandler (FilmViewer::play_clicked), 0, this);
96 _timer.Connect (wxID_ANY, wxEVT_TIMER, wxTimerEventHandler (FilmViewer::timer), 0, this);
97 _back_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::back_clicked), 0, this);
98 _forward_button->Connect (wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler (FilmViewer::forward_clicked), 0, this);
102 JobManager::instance()->ActiveJobsChanged.connect (
103 bind (&FilmViewer::active_jobs_changed, this, _1)
108 FilmViewer::film_changed (Film::Property p)
118 o.decode_audio = false;
119 o.decode_subtitles = true;
120 o.video_sync = false;
123 _decoders = decoder_factory (_film, o);
124 } catch (StringError& e) {
125 error_dialog (this, wxString::Format (_("Could not open content file (%s)"), std_to_wx(e.what()).data()));
129 if (_decoders.video == 0) {
132 _decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3, _4));
133 _decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));
134 _decoders.video->set_subtitle_stream (_film->subtitle_stream());
138 _slider->Show (_film->content_type() == VIDEO);
139 _play_button->Show (_film->content_type() == VIDEO);
143 case Film::WITH_SUBTITLES:
144 case Film::SUBTITLE_OFFSET:
145 case Film::SUBTITLE_SCALE:
150 case Film::SUBTITLE_STREAM:
151 if (_decoders.video) {
152 _decoders.video->set_subtitle_stream (_film->subtitle_stream ());
161 FilmViewer::set_film (shared_ptr<Film> f)
170 _display_frame.reset ();
178 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
180 film_changed (Film::CONTENT);
181 film_changed (Film::FORMAT);
182 film_changed (Film::WITH_SUBTITLES);
183 film_changed (Film::SUBTITLE_OFFSET);
184 film_changed (Film::SUBTITLE_SCALE);
185 film_changed (Film::SUBTITLE_STREAM);
189 FilmViewer::decoder_changed ()
191 if (_decoders.video == 0 || _decoders.video->seek_to_last ()) {
201 FilmViewer::timer (wxTimerEvent &)
203 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);
222 FilmViewer::paint_panel (wxPaintEvent &)
224 wxPaintDC dc (_panel);
226 if (!_display_frame || !_film || !_out_size.width || !_out_size.height) {
231 if (_display_frame_x) {
232 dc.SetPen(*wxBLACK_PEN);
233 dc.SetBrush(*wxBLACK_BRUSH);
234 dc.DrawRectangle (0, 0, _display_frame_x, _film_size.height);
235 dc.DrawRectangle (_display_frame_x + _film_size.width, 0, _display_frame_x, _film_size.height);
238 wxImage frame (_film_size.width, _film_size.height, _display_frame->data()[0], true);
239 wxBitmap frame_bitmap (frame);
240 dc.DrawBitmap (frame_bitmap, _display_frame_x, 0);
242 if (_film->with_subtitles() && _display_sub) {
243 wxImage sub (_display_sub->size().width, _display_sub->size().height, _display_sub->data()[0], _display_sub->alpha(), true);
244 wxBitmap sub_bitmap (sub);
245 dc.DrawBitmap (sub_bitmap, _display_sub_position.x, _display_sub_position.y);
248 if (_out_size.width < _panel_size.width) {
249 wxPen p (GetBackgroundColour ());
250 wxBrush b (GetBackgroundColour ());
253 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
256 if (_out_size.height < _panel_size.height) {
257 wxPen p (GetBackgroundColour ());
258 wxBrush b (GetBackgroundColour ());
261 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
267 FilmViewer::slider_moved (wxScrollEvent &)
269 if (!_film || !_film->length() || !_decoders.video) {
273 if (_decoders.video->seek (_slider->GetValue() * _film->length().get() / (4096 * _film->source_frame_rate()))) {
283 FilmViewer::panel_sized (wxSizeEvent& ev)
285 _panel_size.width = ev.GetSize().GetWidth();
286 _panel_size.height = ev.GetSize().GetHeight();
292 FilmViewer::update_from_raw ()
305 FilmViewer::raw_to_display ()
307 if (!_raw_frame || _out_size.width < 64 || _out_size.height < 64 || !_film) {
311 boost::shared_ptr<Image> input = _raw_frame;
313 pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
314 if (!s.second.empty ()) {
315 input = input->post_process (s.second, true);
318 /* Get a compacted image as we have to feed it to wxWidgets */
319 _display_frame = input->scale_and_convert_to_rgb (_film_size, 0, _film->scaler(), false);
323 /* Our output is already cropped by the decoder, so we need to account for that
324 when working out the scale that we are applying.
327 Size const cropped_size = _film->cropped_size (_film->size ());
329 Rect tx = subtitle_transformed_area (
330 float (_film_size.width) / cropped_size.width,
331 float (_film_size.height) / cropped_size.height,
332 _raw_sub->area(), _film->subtitle_offset(), _film->subtitle_scale()
335 _display_sub.reset (new RGBPlusAlphaImage (_raw_sub->image()->scale (tx.size(), _film->scaler(), false)));
336 _display_sub_position = tx.position();
337 _display_sub_position.x += _display_frame_x;
339 _display_sub.reset ();
344 FilmViewer::calculate_sizes ()
350 Format const * format = _film->format ();
352 float const panel_ratio = static_cast<float> (_panel_size.width) / _panel_size.height;
353 float const film_ratio = format ? format->container_ratio () : 1.78;
355 if (panel_ratio < film_ratio) {
356 /* panel is less widscreen than the film; clamp width */
357 _out_size.width = _panel_size.width;
358 _out_size.height = _out_size.width / film_ratio;
360 /* panel is more widescreen than the film; clamp height */
361 _out_size.height = _panel_size.height;
362 _out_size.width = _out_size.height * film_ratio;
365 /* Work out how much padding there is in terms of our display; this will be the x position
366 of our _display_frame.
368 _display_frame_x = 0;
370 _display_frame_x = static_cast<float> (format->dcp_padding (_film)) * _out_size.width / format->dcp_size().width;
373 _film_size = _out_size;
374 _film_size.width -= _display_frame_x * 2;
376 /* Catch silly values */
377 if (_out_size.width < 64) {
378 _out_size.width = 64;
383 FilmViewer::play_clicked (wxCommandEvent &)
389 FilmViewer::check_play_state ()
395 if (_play_button->GetValue()) {
396 _timer.Start (1000 / _film->source_frame_rate());
403 FilmViewer::process_video (shared_ptr<Image> image, bool, shared_ptr<Subtitle> sub, double t)
412 double const fps = _decoders.video->frames_per_second ();
413 _frame->SetLabel (wxString::Format (wxT("%d"), int (rint (t * fps))));
416 int const h = (w / 3600);
418 int const m = (w / 60);
420 int const s = floor (w);
422 int const f = rint (w * fps);
423 _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d:%02d"), h, m, s, f));
427 FilmViewer::get_frame ()
429 /* Clear our raw frame in case we don't get a new one */
432 if (_decoders.video == 0) {
433 _display_frame.reset ();
439 while (!_got_frame) {
440 if (_decoders.video->pass ()) {
441 /* We didn't get a frame before the decoder gave up,
442 so clear our display frame.
444 _display_frame.reset ();
448 } catch (DecodeError& e) {
449 _play_button->SetValue (false);
451 error_dialog (this, wxString::Format (_("Could not decode video for view (%s)"), std_to_wx(e.what()).data()));
456 FilmViewer::active_jobs_changed (bool a)
459 list<shared_ptr<Job> > jobs = JobManager::instance()->get ();
460 list<shared_ptr<Job> >::iterator i = jobs.begin ();
461 while (i != jobs.end() && boost::dynamic_pointer_cast<ExamineContentJob> (*i) == 0) {
465 if (i == jobs.end() || (*i)->finished()) {
466 /* no examine content job running, so we're ok to use the viewer */
471 _slider->Enable (!a);
472 _play_button->Enable (!a);
476 FilmViewer::back_clicked (wxCommandEvent &)
478 if (!_decoders.video) {
482 _decoders.video->seek_back ();
489 FilmViewer::forward_clicked (wxCommandEvent &)
491 if (!_decoders.video) {
495 _decoders.video->seek_forward ();