2 Copyright (C) 2012-2021 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/>.
22 /** @file src/film_viewer.cc
23 * @brief A wx widget to view a preview of a Film.
27 #include "closed_captions_dialog.h"
28 #include "film_viewer.h"
29 #include "gl_video_view.h"
30 #include "nag_dialog.h"
31 #include "playhead_to_frame_dialog.h"
32 #include "playhead_to_timecode_dialog.h"
33 #include "simple_video_view.h"
36 #include "lib/ratio.h"
38 #include "lib/job_manager.h"
39 #include "lib/image.h"
40 #include "lib/exceptions.h"
41 #include "lib/examine_content_job.h"
42 #include "lib/filter.h"
43 #include "lib/player.h"
44 #include "lib/player_video.h"
45 #include "lib/video_content.h"
46 #include "lib/video_decoder.h"
47 #include "lib/timer.h"
48 #include "lib/butler.h"
50 #include "lib/config.h"
51 #include "lib/compose.hpp"
52 #include "lib/dcpomatic_log.h"
53 #include "lib/text_content.h"
55 #include <libavutil/pixfmt.h>
57 #include <dcp/exceptions.h>
58 #include <wx/tglbtn.h>
65 using std::dynamic_pointer_cast;
66 using std::make_shared;
68 using std::shared_ptr;
71 using boost::optional;
72 #if BOOST_VERSION >= 106100
73 using namespace boost::placeholders;
76 using namespace dcpomatic;
81 rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data)
83 return reinterpret_cast<FilmViewer*>(data)->audio_callback (out, frames);
87 FilmViewer::FilmViewer (wxWindow* p)
88 : _audio (DCPOMATIC_RTAUDIO_API)
89 , _closed_captions_dialog (new ClosedCaptionsDialog(p, this))
91 switch (Config::instance()->video_view_type()) {
92 case Config::VIDEO_VIEW_OPENGL:
93 _video_view = std::make_shared<GLVideoView>(this, p);
95 case Config::VIDEO_VIEW_SIMPLE:
96 _video_view = std::make_shared<SimpleVideoView>(this, p);
100 _video_view->Sized.connect (boost::bind(&FilmViewer::video_view_sized, this));
101 _video_view->TooManyDropped.connect (boost::bind(boost::ref(TooManyDropped)));
103 set_film (shared_ptr<Film>());
105 _config_changed_connection = Config::instance()->Changed.connect(bind(&FilmViewer::config_changed, this, _1));
106 config_changed (Config::SOUND_OUTPUT);
110 FilmViewer::~FilmViewer ()
116 /** Ask for ::get() to be called next time we are idle */
118 FilmViewer::request_idle_display_next_frame ()
125 DCPOMATIC_ASSERT (signal_manager);
126 signal_manager->when_idle (boost::bind(&FilmViewer::idle_handler, this));
131 FilmViewer::idle_handler ()
137 if (_video_view->display_next_frame(true) == VideoView::AGAIN) {
138 /* get() could not complete quickly so we'll try again later */
139 signal_manager->when_idle (boost::bind(&FilmViewer::idle_handler, this));
147 FilmViewer::set_film (shared_ptr<Film> film)
155 _video_view->clear ();
156 _closed_captions_dialog->clear ();
161 _video_view->update ();
166 _player = make_shared<Player>(_film, _optimise_for_j2k ? Image::Alignment::COMPACT : Image::Alignment::PADDED);
167 _player->set_fast ();
168 if (_dcp_decode_reduction) {
169 _player->set_dcp_decode_reduction (_dcp_decode_reduction);
171 } catch (bad_alloc &) {
172 error_dialog (_video_view->get(), _("There is not enough free memory to do that."));
177 _player->set_always_burn_open_subtitles ();
178 _player->set_play_referenced ();
180 _film->Change.connect (boost::bind (&FilmViewer::film_change, this, _1, _2));
181 _film->LengthChange.connect (boost::bind(&FilmViewer::film_length_change, this));
182 _player->Change.connect (boost::bind (&FilmViewer::player_change, this, _1, _2, _3));
184 film_change (ChangeType::DONE, Film::Property::VIDEO_FRAME_RATE);
185 film_change (ChangeType::DONE, Film::Property::THREE_D);
186 film_length_change ();
188 /* Keep about 1 second's worth of history samples */
189 _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
191 _closed_captions_dialog->update_tracks (_film);
201 FilmViewer::recreate_butler ()
211 auto const j2k_gl_optimised = dynamic_pointer_cast<GLVideoView>(_video_view) && _optimise_for_j2k;
213 _butler = std::make_shared<Butler>(
216 Config::instance()->audio_mapping(_audio_channels),
218 bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24),
220 j2k_gl_optimised ? Image::Alignment::COMPACT : Image::Alignment::PADDED,
225 if (!Config::instance()->sound() && !_audio.isStreamOpen()) {
226 _butler->disable_audio ();
229 _closed_captions_dialog->set_butler (_butler);
236 FilmViewer::set_outline_content (bool o)
238 _outline_content = o;
239 _video_view->update ();
244 FilmViewer::set_outline_subtitles (optional<dcpomatic::Rect<double>> rect)
246 _outline_subtitles = rect;
247 _video_view->update ();
252 FilmViewer::set_eyes (Eyes e)
254 _video_view->set_eyes (e);
260 FilmViewer::video_view_sized ()
263 if (!quick_refresh()) {
270 FilmViewer::calculate_sizes ()
272 if (!_film || !_player) {
276 auto const container = _film->container ();
278 auto const view_ratio = float(_video_view->get()->GetSize().x) / _video_view->get()->GetSize().y;
279 auto const film_ratio = container ? container->ratio () : 1.78;
282 if (view_ratio < film_ratio) {
283 /* panel is less widscreen than the film; clamp width */
284 out_size.width = _video_view->get()->GetSize().x;
285 out_size.height = lrintf (out_size.width / film_ratio);
287 /* panel is more widescreen than the film; clamp height */
288 out_size.height = _video_view->get()->GetSize().y;
289 out_size.width = lrintf (out_size.height * film_ratio);
292 /* Catch silly values */
293 out_size.width = max (64, out_size.width);
294 out_size.height = max (64, out_size.height);
296 _player->set_video_container_size (out_size);
301 FilmViewer::suspend ()
304 if (_audio.isStreamRunning()) {
305 _audio.abortStream();
311 FilmViewer::resume ()
313 DCPOMATIC_ASSERT (_suspended > 0);
315 if (_playing && !_suspended) {
316 if (_audio.isStreamOpen()) {
317 _audio.setStreamTime (_video_view->position().seconds());
318 _audio.startStream ();
320 _video_view->start ();
332 auto v = PlaybackPermitted ();
334 /* Computer says no */
338 /* We are about to set up the audio stream from the position of the video view.
339 If there is `lazy' seek in progress we need to wait for it to go through so that
340 _video_view->position() gives us a sensible answer.
346 /* Take the video view's idea of position as our `playhead' and start the
347 audio stream (which is the timing reference) there.
349 if (_audio.isStreamOpen()) {
350 _audio.setStreamTime (_video_view->position().seconds());
352 _audio.startStream ();
353 } catch (RtAudioError& e) {
357 _("There was a problem starting audio playback. Please try another audio output device in Preferences."), std_to_wx(e.what())
363 /* Calling start() below may directly result in Stopped being emitted, and if that
364 * happens we want it to come after the Started signal, so do that first.
366 Started (position());
367 _video_view->start ();
374 if (_audio.isStreamRunning()) {
375 /* stop stream and discard any remaining queued samples */
376 _audio.abortStream ();
384 _video_view->stop ();
385 Stopped (position());
387 _video_view->rethrow ();
393 FilmViewer::player_change (ChangeType type, int property, bool frequent)
395 if (type != ChangeType::DONE || frequent) {
399 if (_coalesce_player_changes) {
400 _pending_player_changes.push_back (property);
404 player_change ({property});
409 FilmViewer::player_change (vector<int> properties)
413 bool try_quick_refresh = false;
414 bool update_ccap_tracks = false;
416 for (auto i: properties) {
418 i == VideoContentProperty::CROP ||
419 i == VideoContentProperty::CUSTOM_RATIO ||
420 i == VideoContentProperty::CUSTOM_SIZE ||
421 i == VideoContentProperty::FADE_IN ||
422 i == VideoContentProperty::FADE_OUT ||
423 i == VideoContentProperty::COLOUR_CONVERSION ||
424 i == PlayerProperty::VIDEO_CONTAINER_SIZE ||
425 i == PlayerProperty::FILM_CONTAINER
427 try_quick_refresh = true;
430 if (i == TextContentProperty::USE || i == TextContentProperty::TYPE || i == TextContentProperty::DCP_TRACK) {
431 update_ccap_tracks = true;
435 if (!try_quick_refresh || !quick_refresh()) {
439 if (update_ccap_tracks) {
440 _closed_captions_dialog->update_tracks (_film);
446 FilmViewer::film_change (ChangeType type, Film::Property p)
448 if (type != ChangeType::DONE) {
452 if (p == Film::Property::AUDIO_CHANNELS) {
454 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
455 _video_view->set_video_frame_rate (_film->video_frame_rate());
456 } else if (p == Film::Property::THREE_D) {
457 _video_view->set_three_d (_film->three_d());
458 } else if (p == Film::Property::CONTENT) {
459 _closed_captions_dialog->update_tracks (_film);
465 FilmViewer::film_length_change ()
467 _video_view->set_length (_film->length());
471 /** Re-get the current frame slowly by seeking */
473 FilmViewer::slow_refresh ()
475 seek (_video_view->position(), true);
479 /** Try to re-get the current frame quickly by resetting the metadata
480 * in the PlayerVideo that we used last time.
481 * @return true if this was possible, false if not.
484 FilmViewer::quick_refresh ()
486 if (!_video_view || !_film || !_player) {
489 return _video_view->reset_metadata (_film, _player->video_container_size());
494 FilmViewer::seek (shared_ptr<Content> content, ContentTime t, bool accurate)
496 auto dt = _player->content_time_to_dcp (content, t);
498 seek (*dt, accurate);
504 FilmViewer::set_coalesce_player_changes (bool c)
506 _coalesce_player_changes = c;
509 player_change (_pending_player_changes);
510 _pending_player_changes.clear ();
516 FilmViewer::seek (DCPTime t, bool accurate)
526 if (t >= _film->length()) {
527 t = _film->length() - one_video_frame();
532 _closed_captions_dialog->clear ();
533 _butler->seek (t, accurate);
536 /* We're not playing, so let the GUI thread get on and
537 come back later to get the next frame after the seek.
539 request_idle_display_next_frame ();
541 /* We're going to start playing again straight away
542 so wait for the seek to finish.
544 while (_video_view->display_next_frame(false) == VideoView::AGAIN) {}
552 FilmViewer::config_changed (Config::Property p)
554 if (p == Config::AUDIO_MAPPING) {
559 if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
563 if (_audio.isStreamOpen ()) {
564 _audio.closeStream ();
567 if (Config::instance()->sound() && _audio.getDeviceCount() > 0) {
569 if (Config::instance()->sound_output()) {
570 while (st < _audio.getDeviceCount()) {
572 if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
575 } catch (RtAudioError&) {
576 /* Something went wrong with that device so we don't want to use it anyway */
580 if (st == _audio.getDeviceCount()) {
581 st = _audio.getDefaultOutputDevice();
584 st = _audio.getDefaultOutputDevice();
588 _audio_channels = _audio.getDeviceInfo(st).outputChannels;
589 RtAudio::StreamParameters sp;
591 sp.nChannels = _audio_channels;
593 _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
594 } catch (RtAudioError& e) {
598 _("Could not set up audio output. There will be no audio during the preview."), std_to_wx(e.what())
611 FilmViewer::uncorrected_time () const
613 if (_audio.isStreamRunning()) {
614 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime());
617 return _video_view->position();
622 FilmViewer::audio_time () const
624 if (!_audio.isStreamRunning()) {
628 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
629 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
634 FilmViewer::time () const
636 return audio_time().get_value_or(_video_view->position());
641 FilmViewer::audio_callback (void* out_p, unsigned int frames)
644 auto t = _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
645 if (!t || DCPTime(uncorrected_time() - *t) < one_video_frame()) {
646 /* There was an underrun or this audio is on time; carry on */
649 /* The audio we just got was (very) late; drop it and get some more. */
652 boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
654 _latency_history.push_back (_audio.getStreamLatency ());
655 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
656 _latency_history.pop_front ();
665 FilmViewer::average_latency () const
667 boost::mutex::scoped_lock lm (_latency_history_mutex);
668 if (_latency_history.empty()) {
673 for (auto i: _latency_history) {
677 return total / _latency_history.size();
682 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
684 _dcp_decode_reduction = reduction;
686 _player->set_dcp_decode_reduction (reduction);
692 FilmViewer::dcp_decode_reduction () const
694 return _dcp_decode_reduction;
699 FilmViewer::one_video_frame () const
701 return DCPTime::from_frames (1, _film ? _film->video_frame_rate() : 24);
705 /** Open a dialog box showing our film's closed captions */
707 FilmViewer::show_closed_captions ()
709 _closed_captions_dialog->Show();
714 FilmViewer::seek_by (DCPTime by, bool accurate)
716 seek (_video_view->position() + by, accurate);
721 FilmViewer::set_pad_black (bool p)
727 /** Called when a player has finished the current film.
728 * May be called from a non-UI thread.
731 FilmViewer::finished ()
733 emit (boost::bind(&FilmViewer::ui_finished, this));
737 /** Called by finished() in the UI thread */
739 FilmViewer::ui_finished ()
747 FilmViewer::dropped () const
749 return _video_view->dropped ();
754 FilmViewer::errored () const
756 return _video_view->errored ();
761 FilmViewer::gets () const
763 return _video_view->gets ();
768 FilmViewer::image_changed (shared_ptr<PlayerVideo> pv)
770 emit (boost::bind(boost::ref(ImageChanged), pv));
775 FilmViewer::set_optimise_for_j2k (bool o)
777 _optimise_for_j2k = o;
778 _video_view->set_optimise_for_j2k (o);