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)
79 , _left_eye (new wxRadioButton (this, wxID_ANY, _("Left eye"), wxDefaultPosition, wxDefaultSize, wxRB_GROUP))
80 , _right_eye (new wxRadioButton (this, wxID_ANY, _("Right eye")))
81 , _jump_to_selected (0)
82 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
83 , _rewind_button (new wxButton (this, wxID_ANY, wxT("|<")))
84 , _back_button (new wxButton (this, wxID_ANY, wxT("<")))
85 , _forward_button (new wxButton (this, wxID_ANY, wxT(">")))
86 , _frame_number (new wxStaticText (this, wxID_ANY, wxT("")))
87 , _timecode (new wxStaticText (this, wxID_ANY, wxT("")))
88 , _play_button (new wxToggleButton (this, wxID_ANY, _("Play")))
89 , _coalesce_player_changes (false)
90 , _slider_being_moved (false)
91 , _was_running_before_slider (false)
92 , _audio (DCPOMATIC_RTAUDIO_API)
94 , _audio_block_size (1024)
96 , _latency_history_count (0)
100 _panel->SetDoubleBuffered (true);
103 _panel->SetBackgroundStyle (wxBG_STYLE_PAINT);
105 _v_sizer = new wxBoxSizer (wxVERTICAL);
108 _v_sizer->Add (_panel, 1, wxEXPAND);
110 wxBoxSizer* view_options = new wxBoxSizer (wxHORIZONTAL);
111 if (outline_content) {
112 _outline_content = new wxCheckBox (this, wxID_ANY, _("Outline content"));
113 view_options->Add (_outline_content, 0, wxRIGHT, DCPOMATIC_SIZER_GAP);
115 view_options->Add (_left_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
116 view_options->Add (_right_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
117 if (jump_to_selected) {
118 _jump_to_selected = new wxCheckBox (this, wxID_ANY, _("Jump to selected content"));
119 view_options->Add (_jump_to_selected, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
121 _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP);
123 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
125 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
126 time_sizer->Add (_frame_number, 0, wxEXPAND);
127 time_sizer->Add (_timecode, 0, wxEXPAND);
129 h_sizer->Add (_rewind_button, 0, wxALL, 2);
130 h_sizer->Add (_back_button, 0, wxALL, 2);
131 h_sizer->Add (time_sizer, 0, wxEXPAND);
132 h_sizer->Add (_forward_button, 0, wxALL, 2);
133 h_sizer->Add (_play_button, 0, wxEXPAND);
134 h_sizer->Add (_slider, 1, wxEXPAND);
136 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
138 _frame_number->SetMinSize (wxSize (84, -1));
139 _rewind_button->SetMinSize (wxSize (32, -1));
140 _back_button->SetMinSize (wxSize (32, -1));
141 _forward_button->SetMinSize (wxSize (32, -1));
143 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
144 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
145 if (_outline_content) {
146 _outline_content->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::refresh_panel, this));
148 _left_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::slow_refresh, this));
149 _right_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::slow_refresh, this));
150 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this, false));
151 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this, true));
152 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this, true));
153 _slider->Bind (wxEVT_SCROLL_THUMBRELEASE, boost::bind (&FilmViewer::slider_released, this));
154 _play_button->Bind (wxEVT_TOGGLEBUTTON, boost::bind (&FilmViewer::play_clicked, this));
155 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
156 _rewind_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::rewind_clicked, this, _1));
157 _back_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::back_clicked, this, _1));
158 _forward_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::forward_clicked, this, _1));
159 _frame_number->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::frame_number_clicked, this));
160 _timecode->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::timecode_clicked, this));
161 if (_jump_to_selected) {
162 _jump_to_selected->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::jump_to_selected_clicked, this));
163 _jump_to_selected->SetValue (Config::instance()->jump_to_selected ());
166 set_film (shared_ptr<Film> ());
168 JobManager::instance()->ActiveJobsChanged.connect (
169 bind (&FilmViewer::active_jobs_changed, this, _2)
172 setup_sensitivity ();
174 _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1));
175 config_changed (Config::SOUND_OUTPUT);
178 FilmViewer::~FilmViewer ()
184 FilmViewer::set_film (shared_ptr<Film> film)
194 update_position_slider ();
195 update_position_label ();
206 _player.reset (new Player (_film, _film->playlist ()));
207 _player->set_fast ();
208 if (_dcp_decode_reduction) {
209 _player->set_dcp_decode_reduction (_dcp_decode_reduction);
211 } catch (bad_alloc) {
212 error_dialog (this, _("There is not enough free memory to do that."));
217 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
220 _player->set_always_burn_subtitles (true);
221 _player->set_play_referenced ();
223 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
224 _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1, _2));
226 /* Keep about 1 second's worth of history samples */
227 _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
234 setup_sensitivity ();
238 FilmViewer::recreate_butler ()
240 bool const was_running = stop ();
247 AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
249 if (_audio_channels != 2 || _film->audio_channels() < 3) {
250 for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
254 /* Special case: stereo output, at least 3 channel input, map L+R to L/R and
255 C to both, all 3dB down.
257 map.set (0, 0, 1 / sqrt(2)); // L -> L
258 map.set (1, 1, 1 / sqrt(2)); // R -> R
259 map.set (2, 0, 1 / sqrt(2)); // C -> L
260 map.set (2, 1, 1 / sqrt(2)); // C -> R
263 _butler.reset (new Butler (_player, _film->log(), map, _audio_channels));
264 if (!Config::instance()->sound() && !_audio.isStreamOpen()) {
265 _butler->disable_audio ();
274 FilmViewer::refresh_panel ()
283 DCPOMATIC_ASSERT (_butler);
286 _player_video = _butler->get_video ();
289 ((_left_eye->GetValue() && _player_video.first->eyes() == EYES_RIGHT) || (_right_eye->GetValue() && _player_video.first->eyes() == EYES_LEFT))
294 display_player_video ();
298 FilmViewer::display_player_video ()
300 if (!_player_video.first) {
306 if (_playing && (time() - _player_video.second) > one_video_frame()) {
307 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
308 part if this frame is J2K).
310 _video_position = _player_video.second;
315 /* In an ideal world, what we would do here is:
317 * 1. convert to XYZ exactly as we do in the DCP creation path.
318 * 2. convert back to RGB for the preview display, compensating
319 * for the monitor etc. etc.
321 * but this is inefficient if the source is RGB. Since we don't
322 * (currently) care too much about the precise accuracy of the preview's
323 * colour mapping (and we care more about its speed) we try to short-
324 * circuit this "ideal" situation in some cases.
326 * The content's specified colour conversion indicates the colourspace
327 * which the content is in (according to the user).
329 * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source
330 * image and convert it (from whatever the user has said it is) to RGB.
333 _frame = _player_video.first->image (
334 bind (&Log::dcp_log, _film->log().get(), _1, _2),
335 bind (&PlayerVideo::always_rgb, _1),
339 ImageChanged (_player_video.first);
341 _video_position = _player_video.second;
342 _inter_position = _player_video.first->inter_position ();
343 _inter_size = _player_video.first->inter_size ();
351 if (!_film || !_playing) {
356 update_position_label ();
357 update_position_slider ();
358 DCPTime const next = _video_position + one_video_frame();
360 if (next >= _film->length()) {
364 _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT);
372 FilmViewer::paint_panel ()
374 wxPaintDC dc (_panel);
376 if (!_frame || !_film || !_out_size.width || !_out_size.height || _out_size != _frame->size()) {
381 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
382 wxBitmap frame_bitmap (frame);
383 dc.DrawBitmap (frame_bitmap, 0, 0);
385 if (_out_size.width < _panel_size.width) {
386 wxPen p (GetBackgroundColour ());
387 wxBrush b (GetBackgroundColour ());
390 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
393 if (_out_size.height < _panel_size.height) {
394 wxPen p (GetBackgroundColour ());
395 wxBrush b (GetBackgroundColour ());
398 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
401 if (_outline_content && _outline_content->GetValue ()) {
402 wxPen p (wxColour (255, 0, 0), 2);
404 dc.SetBrush (*wxTRANSPARENT_BRUSH);
405 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
409 /** @param page true if this was a PAGEUP/PAGEDOWN event for which we won't receive a THUMBRELEASE */
411 FilmViewer::slider_moved (bool page)
417 if (!page && !_slider_being_moved) {
418 /* This is the first event of a drag; stop playback for the duration of the drag */
419 _was_running_before_slider = stop ();
420 _slider_being_moved = true;
423 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
424 t = t.round (_film->video_frame_rate());
425 /* Ensure that we hit the end of the film at the end of the slider */
426 if (t >= _film->length ()) {
427 t = _film->length() - one_video_frame();
430 update_position_label ();
434 FilmViewer::slider_released ()
436 if (_was_running_before_slider) {
437 /* Restart after a drag */
440 _slider_being_moved = false;
444 FilmViewer::panel_sized (wxSizeEvent& ev)
446 _panel_size.width = ev.GetSize().GetWidth();
447 _panel_size.height = ev.GetSize().GetHeight();
450 if (!quick_refresh()) {
453 update_position_label ();
454 update_position_slider ();
458 FilmViewer::calculate_sizes ()
464 Ratio const * container = _film->container ();
466 float const panel_ratio = _panel_size.ratio ();
467 float const film_ratio = container ? container->ratio () : 1.78;
469 if (panel_ratio < film_ratio) {
470 /* panel is less widscreen than the film; clamp width */
471 _out_size.width = _panel_size.width;
472 _out_size.height = lrintf (_out_size.width / film_ratio);
474 /* panel is more widescreen than the film; clamp height */
475 _out_size.height = _panel_size.height;
476 _out_size.width = lrintf (_out_size.height * film_ratio);
479 /* Catch silly values */
480 _out_size.width = max (64, _out_size.width);
481 _out_size.height = max (64, _out_size.height);
483 _player->set_video_container_size (_out_size);
487 FilmViewer::play_clicked ()
493 FilmViewer::check_play_state ()
495 if (!_film || _film->video_frame_rate() == 0) {
499 if (_play_button->GetValue()) {
513 if (_audio.isStreamOpen()) {
514 _audio.setStreamTime (_video_position.seconds());
515 _audio.startStream ();
521 _play_button->SetValue (true);
527 if (_audio.isStreamRunning()) {
528 /* stop stream and discard any remaining queued samples */
529 _audio.abortStream ();
537 _play_button->SetValue (false);
542 FilmViewer::update_position_slider ()
545 _slider->SetValue (0);
549 DCPTime const len = _film->length ();
552 int const new_slider_position = 4096 * _video_position.get() / len.get();
553 if (new_slider_position != _slider->GetValue()) {
554 _slider->SetValue (new_slider_position);
560 FilmViewer::update_position_label ()
563 _frame_number->SetLabel ("0");
564 _timecode->SetLabel ("0:0:0.0");
568 double const fps = _film->video_frame_rate ();
569 /* Count frame number from 1 ... not sure if this is the best idea */
570 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_video_position.seconds() * fps) + 1));
571 _timecode->SetLabel (time_to_timecode (_video_position, fps));
575 FilmViewer::active_jobs_changed (optional<string> j)
577 /* examine content is the only job which stops the viewer working */
578 bool const a = !j || *j != "examine_content";
580 _play_button->Enable (a);
584 FilmViewer::nudge_amount (wxKeyboardState& ev)
586 DCPTime amount = one_video_frame ();
588 if (ev.ShiftDown() && !ev.ControlDown()) {
589 amount = DCPTime::from_seconds (1);
590 } else if (!ev.ShiftDown() && ev.ControlDown()) {
591 amount = DCPTime::from_seconds (10);
592 } else if (ev.ShiftDown() && ev.ControlDown()) {
593 amount = DCPTime::from_seconds (60);
600 FilmViewer::go_to (DCPTime t)
602 if (t < DCPTime ()) {
606 if (t >= _film->length ()) {
607 t = _film->length ();
611 update_position_label ();
612 update_position_slider ();
616 FilmViewer::rewind_clicked (wxMouseEvent& ev)
623 FilmViewer::back_frame ()
629 go_to (_video_position - one_video_frame());
633 FilmViewer::forward_frame ()
639 go_to (_video_position + one_video_frame());
643 FilmViewer::back_clicked (wxKeyboardState& ev)
645 go_to (_video_position - nudge_amount (ev));
649 FilmViewer::forward_clicked (wxKeyboardState& ev)
651 go_to (_video_position + nudge_amount (ev));
655 FilmViewer::player_changed (int property, bool frequent)
661 if (_coalesce_player_changes) {
662 _pending_player_changes.push_back (property);
667 bool refreshed = false;
669 property == VideoContentProperty::CROP ||
670 property == VideoContentProperty::SCALE ||
671 property == VideoContentProperty::FADE_IN ||
672 property == VideoContentProperty::FADE_OUT ||
673 property == VideoContentProperty::COLOUR_CONVERSION ||
674 property == PlayerProperty::VIDEO_CONTAINER_SIZE ||
675 property == PlayerProperty::FILM_CONTAINER
677 refreshed = quick_refresh ();
683 update_position_label ();
684 update_position_slider ();
688 FilmViewer::setup_sensitivity ()
690 bool const c = _film && !_film->content().empty ();
693 _rewind_button->Enable (c);
694 _back_button->Enable (c);
695 _forward_button->Enable (c);
696 _play_button->Enable (c);
697 if (_outline_content) {
698 _outline_content->Enable (c);
700 _frame_number->Enable (c);
701 _timecode->Enable (c);
702 if (_jump_to_selected) {
703 _jump_to_selected->Enable (c);
706 _left_eye->Enable (c && _film->three_d ());
707 _right_eye->Enable (c && _film->three_d ());
711 FilmViewer::film_changed (Film::Property p)
713 if (p == Film::CONTENT || p == Film::THREE_D) {
714 setup_sensitivity ();
715 } else if (p == Film::AUDIO_CHANNELS) {
720 /** Re-get the current frame slowly by seeking */
722 FilmViewer::slow_refresh ()
724 seek (_video_position, true);
727 /** Try to re-get the current frame quickly by resetting the metadata
728 * in the PlayerVideo that we used last time.
729 * @return true if this was possible, false if not.
732 FilmViewer::quick_refresh ()
734 if (!_player_video.first) {
738 if (!_player_video.first->reset_metadata (_player->video_container_size(), _film->frame_size())) {
742 display_player_video ();
747 FilmViewer::set_position (DCPTime p)
751 update_position_label ();
752 update_position_slider ();
756 FilmViewer::set_coalesce_player_changes (bool c)
758 _coalesce_player_changes = c;
761 BOOST_FOREACH (int i, _pending_player_changes) {
762 player_changed (i, false);
764 _pending_player_changes.clear ();
769 FilmViewer::timecode_clicked ()
771 PlayheadToTimecodeDialog* dialog = new PlayheadToTimecodeDialog (this, _film->video_frame_rate ());
772 if (dialog->ShowModal() == wxID_OK) {
773 go_to (dialog->get ());
779 FilmViewer::frame_number_clicked ()
781 PlayheadToFrameDialog* dialog = new PlayheadToFrameDialog (this, _film->video_frame_rate ());
782 if (dialog->ShowModal() == wxID_OK) {
783 go_to (dialog->get ());
789 FilmViewer::jump_to_selected_clicked ()
791 Config::instance()->set_jump_to_selected (_jump_to_selected->GetValue ());
795 FilmViewer::seek (DCPTime t, bool accurate)
801 bool const was_running = stop ();
803 _butler->seek (t, accurate);
812 FilmViewer::config_changed (Config::Property p)
814 if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
818 if (_audio.isStreamOpen ()) {
819 _audio.closeStream ();
822 if (Config::instance()->sound() && _audio.getDeviceCount() > 0) {
824 if (Config::instance()->sound_output()) {
825 while (st < _audio.getDeviceCount()) {
826 if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
831 if (st == _audio.getDeviceCount()) {
832 st = _audio.getDefaultOutputDevice();
835 st = _audio.getDefaultOutputDevice();
838 _audio_channels = _audio.getDeviceInfo(st).outputChannels;
840 RtAudio::StreamParameters sp;
842 sp.nChannels = _audio_channels;
845 _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
846 #ifdef DCPOMATIC_USE_RTERROR
847 } catch (RtError& e) {
849 } catch (RtAudioError& e) {
853 _("Could not set up audio output. There will be no audio during the preview."), std_to_wx(e.what())
865 FilmViewer::time () const
867 if (_audio.isStreamRunning ()) {
868 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
869 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
872 return _video_position;
876 FilmViewer::audio_callback (void* out_p, unsigned int frames)
878 _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
880 boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
882 _latency_history.push_back (_audio.getStreamLatency ());
883 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
884 _latency_history.pop_front ();
892 FilmViewer::average_latency () const
894 boost::mutex::scoped_lock lm (_latency_history_mutex);
895 if (_latency_history.empty()) {
900 BOOST_FOREACH (Frame i, _latency_history) {
904 return total / _latency_history.size();
908 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
910 _dcp_decode_reduction = reduction;
912 _player->set_dcp_decode_reduction (reduction);
917 FilmViewer::dcp_decode_reduction () const
919 return _dcp_decode_reduction;
923 FilmViewer::one_video_frame () const
925 return DCPTime::from_frames (1, _film->video_frame_rate());