2 Copyright (C) 2012-2016 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 (new wxCheckBox (this, wxID_ANY, _("Outline content")))
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 (new wxCheckBox (this, wxID_ANY, _("Jump to selected content")))
82 , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096))
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 , _pending_player_change (false)
90 , _last_seek_accurate (true)
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 view_options->Add (_outline_content, 0, wxRIGHT, DCPOMATIC_SIZER_GAP);
113 view_options->Add (_left_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
114 view_options->Add (_right_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
115 if (jump_to_selected) {
116 view_options->Add (_jump_to_selected, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP);
118 _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP);
120 wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL);
122 wxBoxSizer* time_sizer = new wxBoxSizer (wxVERTICAL);
123 time_sizer->Add (_frame_number, 0, wxEXPAND);
124 time_sizer->Add (_timecode, 0, wxEXPAND);
126 h_sizer->Add (_back_button, 0, wxALL, 2);
127 h_sizer->Add (time_sizer, 0, wxEXPAND);
128 h_sizer->Add (_forward_button, 0, wxALL, 2);
129 h_sizer->Add (_play_button, 0, wxEXPAND);
130 h_sizer->Add (_slider, 1, wxEXPAND);
132 _v_sizer->Add (h_sizer, 0, wxEXPAND | wxALL, 6);
134 _frame_number->SetMinSize (wxSize (84, -1));
135 _back_button->SetMinSize (wxSize (32, -1));
136 _forward_button->SetMinSize (wxSize (32, -1));
138 _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this));
139 _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1));
140 _outline_content->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::refresh_panel, this));
141 _left_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::refresh, this));
142 _right_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::refresh, this));
143 _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this, false));
144 _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this, false));
145 _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this, false));
146 _slider->Bind (wxEVT_SCROLL_CHANGED, boost::bind (&FilmViewer::slider_moved, this, true));
147 _play_button->Bind (wxEVT_TOGGLEBUTTON, boost::bind (&FilmViewer::play_clicked, this));
148 _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this));
149 _back_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::back_clicked, this, _1));
150 _forward_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::forward_clicked, this, _1));
151 _frame_number->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::frame_number_clicked, this));
152 _timecode->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::timecode_clicked, this));
153 _jump_to_selected->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::jump_to_selected_clicked, this));
155 _jump_to_selected->SetValue (Config::instance()->jump_to_selected ());
157 set_film (shared_ptr<Film> ());
159 JobManager::instance()->ActiveJobsChanged.connect (
160 bind (&FilmViewer::active_jobs_changed, this, _2)
163 setup_sensitivity ();
165 _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1));
166 config_changed (Config::SOUND_OUTPUT);
169 FilmViewer::~FilmViewer ()
175 FilmViewer::set_film (shared_ptr<Film> film)
185 update_position_slider ();
186 update_position_label ();
193 _player.reset (new Player (_film, _film->playlist ()));
194 _player->set_fast ();
195 } catch (bad_alloc) {
196 error_dialog (this, _("There is not enough free memory to do that."));
201 /* Always burn in subtitles, even if content is set not to, otherwise we won't see them
204 _player->set_always_burn_subtitles (true);
205 _player->set_play_referenced ();
207 _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
208 _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
210 /* Keep about 1 second's worth of history samples */
211 _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
218 setup_sensitivity ();
222 FilmViewer::recreate_butler ()
224 bool const was_running = stop ();
231 AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
233 if (_audio_channels != 2 || _film->audio_channels() < 3) {
234 for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
238 /* Special case: stereo output, at least 3 channel input, map L+R to L/R and
239 C to both, all 3dB down.
241 map.set (0, 0, 1 / sqrt(2)); // L -> L
242 map.set (1, 1, 1 / sqrt(2)); // R -> R
243 map.set (2, 0, 1 / sqrt(2)); // C -> L
244 map.set (2, 1, 1 / sqrt(2)); // C -> R
247 _butler.reset (new Butler (_player, _film->log(), map, _audio_channels));
248 if (!Config::instance()->sound()) {
249 _butler->disable_audio ();
258 FilmViewer::refresh_panel ()
267 DCPOMATIC_ASSERT (_butler);
269 pair<shared_ptr<PlayerVideo>, DCPTime> video;
271 video = _butler->get_video ();
274 ((_left_eye->GetValue() && video.first->eyes() == EYES_RIGHT) || (_right_eye->GetValue() && video.first->eyes() == EYES_LEFT))
285 if ((time() - video.second) > one_video_frame()) {
286 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
287 part if this frame is J2K).
289 _video_position = video.second;
294 /* In an ideal world, what we would do here is:
296 * 1. convert to XYZ exactly as we do in the DCP creation path.
297 * 2. convert back to RGB for the preview display, compensating
298 * for the monitor etc. etc.
300 * but this is inefficient if the source is RGB. Since we don't
301 * (currently) care too much about the precise accuracy of the preview's
302 * colour mapping (and we care more about its speed) we try to short-
303 * circuit this "ideal" situation in some cases.
305 * The content's specified colour conversion indicates the colourspace
306 * which the content is in (according to the user).
308 * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source
309 * image and convert it (from whatever the user has said it is) to RGB.
312 _frame = video.first->image (
313 bind (&Log::dcp_log, _film->log().get(), _1, _2),
314 bind (&PlayerVideo::always_rgb, _1),
318 ImageChanged (video.first);
320 _video_position = video.second;
321 _inter_position = video.first->inter_position ();
322 _inter_size = video.first->inter_size ();
330 if (!_film || !_playing) {
335 update_position_label ();
336 update_position_slider ();
337 DCPTime const next = _video_position + one_video_frame();
339 if (next >= _film->length()) {
343 _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT);
351 FilmViewer::paint_panel ()
353 wxPaintDC dc (_panel);
355 if (!_frame || !_film || !_out_size.width || !_out_size.height) {
360 wxImage frame (_out_size.width, _out_size.height, _frame->data()[0], true);
361 wxBitmap frame_bitmap (frame);
362 dc.DrawBitmap (frame_bitmap, 0, 0);
364 if (_out_size.width < _panel_size.width) {
365 wxPen p (GetBackgroundColour ());
366 wxBrush b (GetBackgroundColour ());
369 dc.DrawRectangle (_out_size.width, 0, _panel_size.width - _out_size.width, _panel_size.height);
372 if (_out_size.height < _panel_size.height) {
373 wxPen p (GetBackgroundColour ());
374 wxBrush b (GetBackgroundColour ());
377 dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height);
380 if (_outline_content->GetValue ()) {
381 wxPen p (wxColour (255, 0, 0), 2);
383 dc.SetBrush (*wxTRANSPARENT_BRUSH);
384 dc.DrawRectangle (_inter_position.x, _inter_position.y, _inter_size.width, _inter_size.height);
389 FilmViewer::slider_moved (bool update_slider)
396 DCPTime t (_slider->GetValue() * _film->length().get() / 4096);
397 /* Ensure that we hit the end of the film at the end of the slider */
398 if (t >= _film->length ()) {
399 t = _film->length() - one_video_frame();
402 update_position_label ();
404 update_position_slider ();
409 FilmViewer::panel_sized (wxSizeEvent& ev)
411 _panel_size.width = ev.GetSize().GetWidth();
412 _panel_size.height = ev.GetSize().GetHeight();
416 update_position_label ();
417 update_position_slider ();
421 FilmViewer::calculate_sizes ()
427 Ratio const * container = _film->container ();
429 float const panel_ratio = _panel_size.ratio ();
430 float const film_ratio = container ? container->ratio () : 1.78;
432 if (panel_ratio < film_ratio) {
433 /* panel is less widscreen than the film; clamp width */
434 _out_size.width = _panel_size.width;
435 _out_size.height = lrintf (_out_size.width / film_ratio);
437 /* panel is more widescreen than the film; clamp height */
438 _out_size.height = _panel_size.height;
439 _out_size.width = lrintf (_out_size.height * film_ratio);
442 /* Catch silly values */
443 _out_size.width = max (64, _out_size.width);
444 _out_size.height = max (64, _out_size.height);
446 _player->set_video_container_size (_out_size);
450 FilmViewer::play_clicked ()
456 FilmViewer::check_play_state ()
458 if (!_film || _film->video_frame_rate() == 0) {
462 if (_play_button->GetValue()) {
472 if (_audio.isStreamOpen()) {
473 _audio.setStreamTime (_video_position.seconds());
474 _audio.startStream ();
485 if (_audio.isStreamRunning()) {
486 /* stop stream and discard any remainig queued samples */
487 _audio.abortStream ();
495 _play_button->SetValue (false);
500 FilmViewer::update_position_slider ()
503 _slider->SetValue (0);
507 DCPTime const len = _film->length ();
510 int const new_slider_position = 4096 * _video_position.get() / len.get();
511 if (new_slider_position != _slider->GetValue()) {
512 _slider->SetValue (new_slider_position);
518 FilmViewer::update_position_label ()
521 _frame_number->SetLabel ("0");
522 _timecode->SetLabel ("0:0:0.0");
526 double const fps = _film->video_frame_rate ();
527 /* Count frame number from 1 ... not sure if this is the best idea */
528 _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_video_position.seconds() * fps) + 1));
529 _timecode->SetLabel (time_to_timecode (_video_position, fps));
533 FilmViewer::active_jobs_changed (optional<string> j)
535 /* examine content is the only job which stops the viewer working */
536 bool const a = !j || *j != "examine_content";
538 _play_button->Enable (a);
542 FilmViewer::nudge_amount (wxMouseEvent& ev)
544 DCPTime amount = one_video_frame ();
546 if (ev.ShiftDown() && !ev.ControlDown()) {
547 amount = DCPTime::from_seconds (1);
548 } else if (!ev.ShiftDown() && ev.ControlDown()) {
549 amount = DCPTime::from_seconds (10);
550 } else if (ev.ShiftDown() && ev.ControlDown()) {
551 amount = DCPTime::from_seconds (60);
558 FilmViewer::go_to (DCPTime t)
560 if (t < DCPTime ()) {
564 if (t >= _film->length ()) {
565 t = _film->length ();
569 update_position_label ();
570 update_position_slider ();
574 FilmViewer::back_clicked (wxMouseEvent& ev)
576 go_to (_video_position - nudge_amount (ev));
581 FilmViewer::forward_clicked (wxMouseEvent& ev)
583 go_to (_video_position + nudge_amount (ev));
588 FilmViewer::player_changed (bool frequent)
594 if (_coalesce_player_changes) {
595 _pending_player_change = true;
601 update_position_label ();
602 update_position_slider ();
606 FilmViewer::setup_sensitivity ()
608 bool const c = _film && !_film->content().empty ();
611 _back_button->Enable (c);
612 _forward_button->Enable (c);
613 _play_button->Enable (c);
614 _outline_content->Enable (c);
615 _frame_number->Enable (c);
616 _timecode->Enable (c);
617 _jump_to_selected->Enable (c);
619 _left_eye->Enable (c && _film->three_d ());
620 _right_eye->Enable (c && _film->three_d ());
624 FilmViewer::film_changed (Film::Property p)
626 if (p == Film::CONTENT || p == Film::THREE_D) {
627 setup_sensitivity ();
631 /** Re-get the current frame */
633 FilmViewer::refresh ()
635 seek (_video_position, _last_seek_accurate);
639 FilmViewer::set_position (DCPTime p)
643 update_position_label ();
644 update_position_slider ();
648 FilmViewer::set_coalesce_player_changes (bool c)
650 _coalesce_player_changes = c;
653 _pending_player_change = false;
655 if (_pending_player_change) {
656 player_changed (false);
662 FilmViewer::timecode_clicked ()
664 PlayheadToTimecodeDialog* dialog = new PlayheadToTimecodeDialog (this, _film->video_frame_rate ());
665 if (dialog->ShowModal() == wxID_OK) {
666 go_to (dialog->get ());
672 FilmViewer::frame_number_clicked ()
674 PlayheadToFrameDialog* dialog = new PlayheadToFrameDialog (this, _film->video_frame_rate ());
675 if (dialog->ShowModal() == wxID_OK) {
676 go_to (dialog->get ());
682 FilmViewer::jump_to_selected_clicked ()
684 Config::instance()->set_jump_to_selected (_jump_to_selected->GetValue ());
688 FilmViewer::seek (DCPTime t, bool accurate)
694 bool const was_running = stop ();
696 _butler->seek (t, accurate);
697 _last_seek_accurate = accurate;
706 FilmViewer::config_changed (Config::Property p)
708 if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
712 if (_audio.isStreamOpen ()) {
713 _audio.closeStream ();
716 if (Config::instance()->sound()) {
718 if (Config::instance()->sound_output()) {
719 while (st < _audio.getDeviceCount()) {
720 if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
725 if (st == _audio.getDeviceCount()) {
726 st = _audio.getDefaultOutputDevice();
729 st = _audio.getDefaultOutputDevice();
732 _audio_channels = _audio.getDeviceInfo(st).outputChannels;
736 RtAudio::StreamParameters sp;
738 sp.nChannels = _audio_channels;
741 _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
742 #ifdef DCPOMATIC_USE_RTERROR
743 } catch (RtError& e) {
745 } catch (RtAudioError& e) {
749 wxString::Format (_("Could not set up audio output (%s). There will be no audio during the preview."), e.what())
760 FilmViewer::time () const
762 if (_audio.isStreamRunning ()) {
763 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
764 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
767 return _video_position;
771 FilmViewer::audio_callback (void* out_p, unsigned int frames)
773 _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
775 boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
777 _latency_history.push_back (_audio.getStreamLatency ());
778 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
779 _latency_history.pop_front ();
787 FilmViewer::average_latency () const
789 boost::mutex::scoped_lock lm (_latency_history_mutex);
790 if (_latency_history.empty()) {
795 BOOST_FOREACH (Frame i, _latency_history) {
799 return total / _latency_history.size();
803 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
805 _player->set_dcp_decode_reduction (reduction);
809 FilmViewer::one_video_frame () const
811 return DCPTime::from_frames (1, _film->video_frame_rate());