2 Copyright (C) 2012-2017 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 /** @file src/film_viewer.cc
22 * @brief A wx widget to view a preview of a Film.
25 #include "film_viewer.h"
26 #include "playhead_to_timecode_dialog.h"
27 #include "playhead_to_frame_dialog.h"
30 #include "lib/ratio.h"
32 #include "lib/job_manager.h"
33 #include "lib/image.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/player_video.h"
39 #include "lib/video_content.h"
40 #include "lib/video_decoder.h"
41 #include "lib/timer.h"
42 #include "lib/butler.h"
44 #include "lib/config.h"
46 #include <libavutil/pixfmt.h>
48 #include <dcp/exceptions.h>
49 #include <wx/tglbtn.h>
62 using boost::shared_ptr;
63 using boost::dynamic_pointer_cast;
64 using boost::weak_ptr;
65 using boost::optional;
70 rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data)
72 return reinterpret_cast<FilmViewer*>(data)->audio_callback (out, frames);
75 FilmViewer::FilmViewer (wxWindow* p, bool outline_content, bool jump_to_selected)
77 , _panel (new wxPanel (this))
78 , _outline_content (0)
80 , _jump_to_selected (0)
81 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
82 , _rewind_button (new wxButton (this, wxID_ANY, wxT("|<")))
83 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
84 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
85 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
86 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
87 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
88 , _coalesce_player_changes (false)
89 , _slider_being_moved (false)
90 , _was_running_before_slider (false)
91 , _audio (DCPOMATIC_RTAUDIO_API)
93 , _audio_block_size (1024)
95 , _latency_history_count (0)
99 _panel->SetDoubleBuffered (true);
102 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
104 _v_sizer = new wxBoxSizer (wxVERTICAL);
107 _v_sizer->Add (_panel, 1, wxEXPAND);
109 wxBoxSizer* view_options = new wxBoxSizer (wxHORIZONTAL);
110 if (outline_content) {
111 _outline_content = new wxCheckBox (this, wxID_ANY, _("Outline content"));
112 view_options->Add (_outline_content, 0, wxRIGHT | wxALIGN_CENTER_VERTICAL, DCPOMATIC_SIZER_GAP);
115 _eye = new wxChoice (this, wxID_ANY);
116 _eye->Append (_("Left"));
117 _eye->Append (_("Right"));
118 _eye->SetSelection (0);
119 view_options->Add (_eye, 0, wxLEFT | wxRIGHT | wxALIGN_CENTER_VERTICAL, DCPOMATIC_SIZER_GAP);
121 if (jump_to_selected) {
122 _jump_to_selected = new wxCheckBox (this, wxID_ANY, _("Jump to selected content"));
123 view_options->Add (_jump_to_selected, 0, wxLEFT | wxRIGHT | wxALIGN_CENTER_VERTICAL, DCPOMATIC_SIZER_GAP);
126 _captions = new wxChoice (this, wxID_ANY);
127 _captions->Append (_("Open captions (subtitles)"));
128 _captions->Append (_("Closed captions"));
129 _captions->SetSelection (0);
130 view_options->Add (_captions, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
132 _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP);
134 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
136 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
137 time_sizer->Add (_frame_number, 0, wxEXPAND);
138 time_sizer->Add (_timecode, 0, wxEXPAND);
140 h_sizer->Add (_rewind_button, 0, wxALL, 2);
141 h_sizer->Add (_back_button, 0, wxALL, 2);
142 h_sizer->Add (time_sizer, 0, wxEXPAND);
143 h_sizer->Add (_forward_button, 0, wxALL, 2);
144 h_sizer->Add (_play_button, 0, wxEXPAND);
145 h_sizer->Add (_slider, 1, wxEXPAND);
147 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
149 _frame_number->SetMinSize (wxSize (84, -1));
150 _rewind_button->SetMinSize (wxSize (32, -1));
151 _back_button->SetMinSize (wxSize (32, -1));
152 _forward_button->SetMinSize (wxSize (32, -1));
154 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
155 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
156 if (_outline_content) {
157 _outline_content->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::refresh_panel, this));
159 _eye->Bind (wxEVT_CHOICE, boost::bind (&FilmViewer::slow_refresh, this));
160 _captions->Bind (wxEVT_CHOICE, boost::bind (&FilmViewer::captions_changed, this));
161 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this, false));
162 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this, true));
163 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this, true));
164 _slider->Bind (wxEVT_SCROLL_THUMBRELEASE, boost::bind (&FilmViewer::slider_released, this));
165 _play_button->Bind (wxEVT_TOGGLEBUTTON, boost::bind (&FilmViewer::play_clicked, this));
166 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
167 _rewind_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::rewind_clicked, this, _1));
168 _back_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::back_clicked, this, _1));
169 _forward_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::forward_clicked, this, _1));
170 _frame_number->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::frame_number_clicked, this));
171 _timecode->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::timecode_clicked, this));
172 if (_jump_to_selected) {
173 _jump_to_selected->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::jump_to_selected_clicked, this));
174 _jump_to_selected->SetValue (Config::instance()->jump_to_selected ());
177 set_film (shared_ptr<Film> ());
179 JobManager::instance()->ActiveJobsChanged.connect (
180 bind (&FilmViewer::active_jobs_changed, this, _2)
183 setup_sensitivity ();
185 _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1));
186 config_changed (Config::SOUND_OUTPUT);
189 FilmViewer::~FilmViewer ()
195 FilmViewer::set_film (shared_ptr<Film> film)
205 update_position_slider ();
206 update_position_label ();
217 _player.reset (new Player (_film, _film->playlist ()));
218 _player->set_fast ();
219 if (_dcp_decode_reduction) {
220 _player->set_dcp_decode_reduction (_dcp_decode_reduction);
222 } catch (bad_alloc) {
223 error_dialog (this, _("There is not enough free memory to do that."));
228 /* Start off burning in subtitles, as that's the initial setting of the dropdown */
229 _player->set_always_burn_captions (CAPTION_OPEN);
230 _player->set_play_referenced ();
232 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
233 _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1, _2));
235 /* Keep about 1 second's worth of history samples */
236 _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
243 setup_sensitivity ();
247 FilmViewer::recreate_butler ()
249 bool const was_running = stop ();
256 AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
258 if (_audio_channels != 2 || _film->audio_channels() < 3) {
259 for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
263 /* Special case: stereo output, at least 3 channel input.
264 Map so that Lt = L(-3dB) + Ls(-3dB) + C(-6dB) + Lfe(-10dB)
265 Rt = R(-3dB) + Rs(-3dB) + C(-6dB) + Lfe(-10dB)
267 map.set (dcp::LEFT, 0, 1 / sqrt(2)); // L -> Lt
268 map.set (dcp::RIGHT, 1, 1 / sqrt(2)); // R -> Rt
269 map.set (dcp::CENTRE, 0, 1 / 2.0); // C -> Lt
270 map.set (dcp::CENTRE, 1, 1 / 2.0); // C -> Rt
271 map.set (dcp::LFE, 0, 1 / sqrt(10)); // Lfe -> Lt
272 map.set (dcp::LFE, 1, 1 / sqrt(10)); // Lfe -> Rt
273 map.set (dcp::LS, 0, 1 / sqrt(2)); // Ls -> Lt
274 map.set (dcp::RS, 1, 1 / sqrt(2)); // Rs -> Rt
277 _butler.reset (new Butler (_player, _film->log(), map, _audio_channels));
278 if (!Config::instance()->sound() && !_audio.isStreamOpen()) {
279 _butler->disable_audio ();
288 FilmViewer::refresh_panel ()
297 DCPOMATIC_ASSERT (_butler);
300 _player_video = _butler->get_video ();
303 ((_eye->GetSelection() == 0 && _player_video.first->eyes() == EYES_RIGHT) || (_eye->GetSelection() == 1 && _player_video.first->eyes() == EYES_LEFT))
308 display_player_video ();
312 FilmViewer::display_player_video ()
314 if (!_player_video.first) {
320 if (_playing && (time() - _player_video.second) > one_video_frame()) {
321 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
322 part if this frame is J2K).
324 _video_position = _player_video.second;
329 /* In an ideal world, what we would do here is:
331 * 1. convert to XYZ exactly as we do in the DCP creation path.
332 * 2. convert back to RGB for the preview display, compensating
333 * for the monitor etc. etc.
335 * but this is inefficient if the source is RGB. Since we don't
336 * (currently) care too much about the precise accuracy of the preview's
337 * colour mapping (and we care more about its speed) we try to short-
338 * circuit this "ideal" situation in some cases.
340 * The content's specified colour conversion indicates the colourspace
341 * which the content is in (according to the user).
343 * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source
344 * image and convert it (from whatever the user has said it is) to RGB.
347 _frame = _player_video.first->image (
348 bind (&Log::dcp_log, _film->log().get(), _1, _2),
349 bind (&PlayerVideo::always_rgb, _1),
353 ImageChanged (_player_video.first);
355 _video_position = _player_video.second;
356 _inter_position = _player_video.first->inter_position ();
357 _inter_size = _player_video.first->inter_size ();
365 if (!_film || !_playing) {
370 update_position_label ();
371 update_position_slider ();
372 DCPTime const next = _video_position + one_video_frame();
374 if (next >= _film->length()) {
378 _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT);
386 FilmViewer::paint_panel ()
388 wxPaintDC dc (_panel);
390 if (!_frame || !_film || !_out_size.width || !_out_size.height || _out_size != _frame->size()) {
395 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
396 wxBitmap frame_bitmap (frame);
397 dc.DrawBitmap (frame_bitmap, 0, 0);
399 if (_out_size.width < _panel_size.width) {
400 wxPen p (GetBackgroundColour ());
401 wxBrush b (GetBackgroundColour ());
404 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
407 if (_out_size.height < _panel_size.height) {
408 wxPen p (GetBackgroundColour ());
409 wxBrush b (GetBackgroundColour ());
412 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
415 if (_outline_content && _outline_content->GetValue ()) {
416 wxPen p (wxColour (255, 0, 0), 2);
418 dc.SetBrush (*wxTRANSPARENT_BRUSH);
419 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
423 /** @param page true if this was a PAGEUP/PAGEDOWN event for which we won't receive a THUMBRELEASE */
425 FilmViewer::slider_moved (bool page)
431 if (!page && !_slider_being_moved) {
432 /* This is the first event of a drag; stop playback for the duration of the drag */
433 _was_running_before_slider = stop ();
434 _slider_being_moved = true;
437 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
438 t = t.round (_film->video_frame_rate());
439 /* Ensure that we hit the end of the film at the end of the slider */
440 if (t >= _film->length ()) {
441 t = _film->length() - one_video_frame();
444 update_position_label ();
448 FilmViewer::slider_released ()
450 if (_was_running_before_slider) {
451 /* Restart after a drag */
454 _slider_being_moved = false;
458 FilmViewer::panel_sized (wxSizeEvent& ev)
460 _panel_size.width = ev.GetSize().GetWidth();
461 _panel_size.height = ev.GetSize().GetHeight();
464 if (!quick_refresh()) {
467 update_position_label ();
468 update_position_slider ();
472 FilmViewer::calculate_sizes ()
474 if (!_film || !_player) {
478 Ratio const * container = _film->container ();
480 float const panel_ratio = _panel_size.ratio ();
481 float const film_ratio = container ? container->ratio () : 1.78;
483 if (panel_ratio < film_ratio) {
484 /* panel is less widscreen than the film; clamp width */
485 _out_size.width = _panel_size.width;
486 _out_size.height = lrintf (_out_size.width / film_ratio);
488 /* panel is more widescreen than the film; clamp height */
489 _out_size.height = _panel_size.height;
490 _out_size.width = lrintf (_out_size.height * film_ratio);
493 /* Catch silly values */
494 _out_size.width = max (64, _out_size.width);
495 _out_size.height = max (64, _out_size.height);
497 _player->set_video_container_size (_out_size);
501 FilmViewer::play_clicked ()
507 FilmViewer::check_play_state ()
509 if (!_film || _film->video_frame_rate() == 0) {
513 if (_play_button->GetValue()) {
527 if (_audio.isStreamOpen()) {
528 _audio.setStreamTime (_video_position.seconds());
529 _audio.startStream ();
535 _play_button->SetValue (true);
541 if (_audio.isStreamRunning()) {
542 /* stop stream and discard any remaining queued samples */
543 _audio.abortStream ();
551 _play_button->SetValue (false);
556 FilmViewer::update_position_slider ()
559 _slider->SetValue (0);
563 DCPTime const len = _film->length ();
566 int const new_slider_position = 4096 * _video_position.get() / len.get();
567 if (new_slider_position != _slider->GetValue()) {
568 _slider->SetValue (new_slider_position);
574 FilmViewer::update_position_label ()
577 _frame_number->SetLabel ("0");
578 _timecode->SetLabel ("0:0:0.0");
582 double const fps = _film->video_frame_rate ();
583 /* Count frame number from 1 ... not sure if this is the best idea */
584 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_video_position.seconds() * fps) + 1));
585 _timecode->SetLabel (time_to_timecode (_video_position, fps));
589 FilmViewer::active_jobs_changed (optional<string> j)
591 /* examine content is the only job which stops the viewer working */
592 bool const a = !j || *j != "examine_content";
594 _play_button->Enable (a);
598 FilmViewer::nudge_amount (wxKeyboardState& ev)
600 DCPTime amount = one_video_frame ();
602 if (ev.ShiftDown() && !ev.ControlDown()) {
603 amount = DCPTime::from_seconds (1);
604 } else if (!ev.ShiftDown() && ev.ControlDown()) {
605 amount = DCPTime::from_seconds (10);
606 } else if (ev.ShiftDown() && ev.ControlDown()) {
607 amount = DCPTime::from_seconds (60);
614 FilmViewer::go_to (DCPTime t)
616 if (t < DCPTime ()) {
620 if (t >= _film->length ()) {
621 t = _film->length ();
625 update_position_label ();
626 update_position_slider ();
630 FilmViewer::rewind_clicked (wxMouseEvent& ev)
637 FilmViewer::back_frame ()
643 go_to (_video_position - one_video_frame());
647 FilmViewer::forward_frame ()
653 go_to (_video_position + one_video_frame());
657 FilmViewer::back_clicked (wxKeyboardState& ev)
659 go_to (_video_position - nudge_amount (ev));
663 FilmViewer::forward_clicked (wxKeyboardState& ev)
665 go_to (_video_position + nudge_amount (ev));
669 FilmViewer::player_changed (int property, bool frequent)
675 if (_coalesce_player_changes) {
676 _pending_player_changes.push_back (property);
681 bool refreshed = false;
683 property == VideoContentProperty::CROP ||
684 property == VideoContentProperty::SCALE ||
685 property == VideoContentProperty::FADE_IN ||
686 property == VideoContentProperty::FADE_OUT ||
687 property == VideoContentProperty::COLOUR_CONVERSION ||
688 property == PlayerProperty::VIDEO_CONTAINER_SIZE ||
689 property == PlayerProperty::FILM_CONTAINER
691 refreshed = quick_refresh ();
697 update_position_label ();
698 update_position_slider ();
702 FilmViewer::setup_sensitivity ()
704 bool const c = _film && !_film->content().empty ();
707 _rewind_button->Enable (c);
708 _back_button->Enable (c);
709 _forward_button->Enable (c);
710 _play_button->Enable (c);
711 if (_outline_content) {
712 _outline_content->Enable (c);
714 _frame_number->Enable (c);
715 _timecode->Enable (c);
716 if (_jump_to_selected) {
717 _jump_to_selected->Enable (c);
720 _eye->Enable (c && _film->three_d ());
724 FilmViewer::film_changed (Film::Property p)
726 if (p == Film::CONTENT || p == Film::THREE_D) {
727 setup_sensitivity ();
728 } else if (p == Film::AUDIO_CHANNELS) {
734 FilmViewer::captions_changed ()
736 switch (_captions->GetSelection()) {
738 _player->set_always_burn_captions (CAPTION_OPEN);
741 _player->set_always_burn_captions (CAPTION_CLOSED);
748 /** Re-get the current frame slowly by seeking */
750 FilmViewer::slow_refresh ()
752 seek (_video_position, true);
755 /** Try to re-get the current frame quickly by resetting the metadata
756 * in the PlayerVideo that we used last time.
757 * @return true if this was possible, false if not.
760 FilmViewer::quick_refresh ()
762 if (!_player_video.first) {
766 if (!_player_video.first->reset_metadata (_player->video_container_size(), _film->frame_size())) {
770 display_player_video ();
775 FilmViewer::set_position (DCPTime p)
779 update_position_label ();
780 update_position_slider ();
784 FilmViewer::set_position (shared_ptr<Content> content, ContentTime t)
786 set_position (_player->content_time_to_dcp (content, t));
790 FilmViewer::set_coalesce_player_changes (bool c)
792 _coalesce_player_changes = c;
795 BOOST_FOREACH (int i, _pending_player_changes) {
796 player_changed (i, false);
798 _pending_player_changes.clear ();
803 FilmViewer::timecode_clicked ()
805 PlayheadToTimecodeDialog* dialog = new PlayheadToTimecodeDialog (this, _film->video_frame_rate ());
806 if (dialog->ShowModal() == wxID_OK) {
807 go_to (dialog->get ());
813 FilmViewer::frame_number_clicked ()
815 PlayheadToFrameDialog* dialog = new PlayheadToFrameDialog (this, _film->video_frame_rate ());
816 if (dialog->ShowModal() == wxID_OK) {
817 go_to (dialog->get ());
823 FilmViewer::jump_to_selected_clicked ()
825 Config::instance()->set_jump_to_selected (_jump_to_selected->GetValue ());
829 FilmViewer::seek (DCPTime t, bool accurate)
835 bool const was_running = stop ();
837 _butler->seek (t, accurate);
846 FilmViewer::config_changed (Config::Property p)
848 if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
852 if (_audio.isStreamOpen ()) {
853 _audio.closeStream ();
856 if (Config::instance()->sound() && _audio.getDeviceCount() > 0) {
858 if (Config::instance()->sound_output()) {
859 while (st < _audio.getDeviceCount()) {
860 if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
865 if (st == _audio.getDeviceCount()) {
866 st = _audio.getDefaultOutputDevice();
869 st = _audio.getDefaultOutputDevice();
872 _audio_channels = _audio.getDeviceInfo(st).outputChannels;
874 RtAudio::StreamParameters sp;
876 sp.nChannels = _audio_channels;
879 _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
880 #ifdef DCPOMATIC_USE_RTERROR
881 } catch (RtError& e) {
883 } catch (RtAudioError& e) {
887 _("Could not set up audio output. There will be no audio during the preview."), std_to_wx(e.what())
899 FilmViewer::time () const
901 if (_audio.isStreamRunning ()) {
902 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
903 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
906 return _video_position;
910 FilmViewer::audio_callback (void* out_p, unsigned int frames)
912 _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
914 boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
916 _latency_history.push_back (_audio.getStreamLatency ());
917 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
918 _latency_history.pop_front ();
926 FilmViewer::average_latency () const
928 boost::mutex::scoped_lock lm (_latency_history_mutex);
929 if (_latency_history.empty()) {
934 BOOST_FOREACH (Frame i, _latency_history) {
938 return total / _latency_history.size();
942 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
944 _dcp_decode_reduction = reduction;
946 _player->set_dcp_decode_reduction (reduction);
951 FilmViewer::dcp_decode_reduction () const
953 return _dcp_decode_reduction;
957 FilmViewer::one_video_frame () const
959 return DCPTime::from_frames (1, _film->video_frame_rate());