2 Copyright (C) 2012-2019 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"
29 #include "closed_captions_dialog.h"
30 #include "gl_video_view.h"
31 #include "simple_video_view.h"
33 #include "lib/ratio.h"
35 #include "lib/job_manager.h"
36 #include "lib/image.h"
37 #include "lib/exceptions.h"
38 #include "lib/examine_content_job.h"
39 #include "lib/filter.h"
40 #include "lib/player.h"
41 #include "lib/player_video.h"
42 #include "lib/video_content.h"
43 #include "lib/video_decoder.h"
44 #include "lib/timer.h"
45 #include "lib/butler.h"
47 #include "lib/config.h"
48 #include "lib/compose.hpp"
49 #include "lib/dcpomatic_log.h"
51 #include <libavutil/pixfmt.h>
53 #include <dcp/exceptions.h>
54 #include <wx/tglbtn.h>
67 using boost::shared_ptr;
68 using boost::dynamic_pointer_cast;
69 using boost::weak_ptr;
70 using boost::optional;
72 using namespace dcpomatic;
76 rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data)
78 return reinterpret_cast<FilmViewer*>(data)->audio_callback (out, frames);
81 FilmViewer::FilmViewer (wxWindow* p)
82 : _coalesce_player_changes (false)
83 , _audio (DCPOMATIC_RTAUDIO_API)
85 , _audio_block_size (1024)
87 , _latency_history_count (0)
89 , _closed_captions_dialog (new ClosedCaptionsDialog(p, this))
90 , _outline_content (false)
93 #ifdef DCPOMATIC_VARIANT_SWAROOP
94 , _in_watermark (false)
95 , _background_image (false)
97 , _state_timer ("viewer")
100 switch (Config::instance()->video_view_type()) {
101 case Config::VIDEO_VIEW_OPENGL:
102 _video_view = new GLVideoView (this, p);
104 case Config::VIDEO_VIEW_SIMPLE:
105 _video_view = new SimpleVideoView (this, p);
109 _video_view->Sized.connect (boost::bind(&FilmViewer::video_view_sized, this));
110 _timer.Bind (wxEVT_TIMER, boost::bind(&FilmViewer::timer, this));
112 set_film (shared_ptr<Film> ());
114 _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1));
115 config_changed (Config::SOUND_OUTPUT);
118 FilmViewer::~FilmViewer ()
124 FilmViewer::set_film (shared_ptr<Film> film)
131 _video_position = DCPTime ();
132 _player_video.first.reset ();
133 _player_video.second = DCPTime ();
135 _video_view->set_image (shared_ptr<Image>());
136 _closed_captions_dialog->clear ();
146 _player.reset (new Player (_film, _film->playlist ()));
147 _player->set_fast ();
148 if (_dcp_decode_reduction) {
149 _player->set_dcp_decode_reduction (_dcp_decode_reduction);
151 } catch (bad_alloc &) {
152 error_dialog (_video_view->get(), _("There is not enough free memory to do that."));
157 _player->set_always_burn_open_subtitles ();
158 _player->set_play_referenced ();
160 _film->Change.connect (boost::bind (&FilmViewer::film_change, this, _1, _2));
161 _player->Change.connect (boost::bind (&FilmViewer::player_change, this, _1, _2, _3));
163 /* Keep about 1 second's worth of history samples */
164 _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
173 FilmViewer::recreate_butler ()
175 bool const was_running = stop ();
182 AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
184 if (_audio_channels != 2 || _film->audio_channels() < 3) {
185 for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
189 /* Special case: stereo output, at least 3 channel input.
190 Map so that Lt = L(-3dB) + Ls(-3dB) + C(-6dB) + Lfe(-10dB)
191 Rt = R(-3dB) + Rs(-3dB) + C(-6dB) + Lfe(-10dB)
193 map.set (dcp::LEFT, 0, 1 / sqrt(2)); // L -> Lt
194 map.set (dcp::RIGHT, 1, 1 / sqrt(2)); // R -> Rt
195 map.set (dcp::CENTRE, 0, 1 / 2.0); // C -> Lt
196 map.set (dcp::CENTRE, 1, 1 / 2.0); // C -> Rt
197 map.set (dcp::LFE, 0, 1 / sqrt(10)); // Lfe -> Lt
198 map.set (dcp::LFE, 1, 1 / sqrt(10)); // Lfe -> Rt
199 map.set (dcp::LS, 0, 1 / sqrt(2)); // Ls -> Lt
200 map.set (dcp::RS, 1, 1 / sqrt(2)); // Rs -> Rt
203 _butler.reset (new Butler(_player, map, _audio_channels, bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true));
204 if (!Config::instance()->sound() && !_audio.isStreamOpen()) {
205 _butler->disable_audio ();
208 _closed_captions_dialog->set_film_and_butler (_film, _butler);
216 FilmViewer::refresh_view ()
218 _state_timer.set ("update-view");
219 _video_view->update ();
220 _state_timer.unset ();
226 DCPOMATIC_ASSERT (_butler);
231 _player_video = _butler->get_video (&e);
232 if (!_player_video.first && e == Butler::AGAIN) {
233 signal_manager->when_idle (boost::bind(&FilmViewer::get, this));
237 _player_video.first &&
239 _eyes != _player_video.first->eyes() &&
240 _player_video.first->eyes() != EYES_BOTH
245 display_player_video ();
249 FilmViewer::display_player_video ()
251 if (!_player_video.first) {
252 _video_view->set_image (shared_ptr<Image>());
257 if (_playing && (time() - _player_video.second) > one_video_frame()) {
258 /* Too late; just drop this frame before we try to get its image (which will be the time-consuming
259 part if this frame is J2K).
261 _video_position = _player_video.second;
266 /* In an ideal world, what we would do here is:
268 * 1. convert to XYZ exactly as we do in the DCP creation path.
269 * 2. convert back to RGB for the preview display, compensating
270 * for the monitor etc. etc.
272 * but this is inefficient if the source is RGB. Since we don't
273 * (currently) care too much about the precise accuracy of the preview's
274 * colour mapping (and we care more about its speed) we try to short-
275 * circuit this "ideal" situation in some cases.
277 * The content's specified colour conversion indicates the colourspace
278 * which the content is in (according to the user).
280 * PlayerVideo::image (bound to PlayerVideo::force) will take the source
281 * image and convert it (from whatever the user has said it is) to RGB.
284 _state_timer.set ("get image");
286 _video_view->set_image (
287 _player_video.first->image(bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true)
290 _state_timer.set ("ImageChanged");
291 ImageChanged (_player_video.first);
292 _state_timer.unset ();
294 _video_position = _player_video.second;
295 _inter_position = _player_video.first->inter_position ();
296 _inter_size = _player_video.first->inter_size ();
300 _closed_captions_dialog->update (time());
306 if (!_film || !_playing) {
312 DCPTime const next = _video_position + one_video_frame();
314 if (next >= _film->length()) {
320 LOG_DEBUG_PLAYER("%1 -> %2; delay %3", next.seconds(), time().seconds(), max((next.seconds() - time().seconds()) * 1000, 1.0));
321 _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT);
329 #ifdef DCPOMATIC_VARIANT_SWAROOP
331 FilmViewer::maybe_draw_background_image (wxPaintDC& dc)
333 optional<boost::filesystem::path> bg = Config::instance()->player_background_image();
335 wxImage image (std_to_wx(bg->string()));
336 wxBitmap bitmap (image);
337 dc.DrawBitmap (bitmap, max(0, (_panel_size.width - image.GetSize().GetWidth()) / 2), max(0, (_panel_size.height - image.GetSize().GetHeight()) / 2));
344 FilmViewer::maybe_draw_background_image (wxPaintDC &)
351 FilmViewer::set_outline_content (bool o)
353 _outline_content = o;
358 FilmViewer::set_eyes (Eyes e)
365 FilmViewer::video_view_sized ()
368 if (!quick_refresh()) {
375 FilmViewer::calculate_sizes ()
377 if (!_film || !_player) {
381 Ratio const * container = _film->container ();
383 float const view_ratio = float(_video_view->get()->GetSize().x) / _video_view->get()->GetSize().y;
384 float const film_ratio = container ? container->ratio () : 1.78;
386 if (view_ratio < film_ratio) {
387 /* panel is less widscreen than the film; clamp width */
388 _out_size.width = _video_view->get()->GetSize().x;
389 _out_size.height = lrintf (_out_size.width / film_ratio);
391 /* panel is more widescreen than the film; clamp height */
392 _out_size.height = _video_view->get()->GetSize().y;
393 _out_size.width = lrintf (_out_size.height * film_ratio);
396 /* Catch silly values */
397 _out_size.width = max (64, _out_size.width);
398 _out_size.height = max (64, _out_size.height);
400 _player->set_video_container_size (_out_size);
410 optional<bool> v = PlaybackPermitted ();
412 /* Computer says no */
416 if (_audio.isStreamOpen()) {
417 _audio.setStreamTime (_video_position.seconds());
418 _audio.startStream ();
424 Started (position());
430 if (_audio.isStreamRunning()) {
431 /* stop stream and discard any remaining queued samples */
432 _audio.abortStream ();
440 Stopped (position());
445 FilmViewer::player_change (ChangeType type, int property, bool frequent)
447 if (type != CHANGE_TYPE_DONE || frequent) {
451 if (_coalesce_player_changes) {
452 _pending_player_changes.push_back (property);
457 bool refreshed = false;
459 property == VideoContentProperty::CROP ||
460 property == VideoContentProperty::SCALE ||
461 property == VideoContentProperty::FADE_IN ||
462 property == VideoContentProperty::FADE_OUT ||
463 property == VideoContentProperty::COLOUR_CONVERSION ||
464 property == PlayerProperty::VIDEO_CONTAINER_SIZE ||
465 property == PlayerProperty::FILM_CONTAINER
467 refreshed = quick_refresh ();
477 FilmViewer::film_change (ChangeType type, Film::Property p)
479 if (type == CHANGE_TYPE_DONE && p == Film::AUDIO_CHANNELS) {
484 /** Re-get the current frame slowly by seeking */
486 FilmViewer::slow_refresh ()
488 seek (_video_position, true);
491 /** Try to re-get the current frame quickly by resetting the metadata
492 * in the PlayerVideo that we used last time.
493 * @return true if this was possible, false if not.
496 FilmViewer::quick_refresh ()
498 if (!_player_video.first) {
502 if (!_player_video.first->reset_metadata (_film, _player->video_container_size(), _film->frame_size())) {
506 display_player_video ();
511 FilmViewer::seek (shared_ptr<Content> content, ContentTime t, bool accurate)
513 optional<DCPTime> dt = _player->content_time_to_dcp (content, t);
515 seek (*dt, accurate);
520 FilmViewer::set_coalesce_player_changes (bool c)
522 _coalesce_player_changes = c;
525 BOOST_FOREACH (int i, _pending_player_changes) {
526 player_change (CHANGE_TYPE_DONE, i, false);
528 _pending_player_changes.clear ();
533 FilmViewer::seek (DCPTime t, bool accurate)
539 if (t < DCPTime ()) {
543 if (t >= _film->length ()) {
544 t = _film->length ();
547 bool const was_running = stop ();
549 _closed_captions_dialog->clear ();
550 _butler->seek (t, accurate);
561 FilmViewer::config_changed (Config::Property p)
563 #ifdef DCPOMATIC_VARIANT_SWAROOP
564 if (p == Config::PLAYER_BACKGROUND_IMAGE) {
570 if (p != Config::SOUND && p != Config::SOUND_OUTPUT) {
574 if (_audio.isStreamOpen ()) {
575 _audio.closeStream ();
578 if (Config::instance()->sound() && _audio.getDeviceCount() > 0) {
580 if (Config::instance()->sound_output()) {
581 while (st < _audio.getDeviceCount()) {
582 if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
587 if (st == _audio.getDeviceCount()) {
588 st = _audio.getDefaultOutputDevice();
591 st = _audio.getDefaultOutputDevice();
594 _audio_channels = _audio.getDeviceInfo(st).outputChannels;
596 RtAudio::StreamParameters sp;
598 sp.nChannels = _audio_channels;
601 _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
602 #ifdef DCPOMATIC_USE_RTERROR
603 } catch (RtError& e) {
605 } catch (RtAudioError& e) {
609 _("Could not set up audio output. There will be no audio during the preview."), std_to_wx(e.what())
621 FilmViewer::uncorrected_time () const
623 if (_audio.isStreamRunning ()) {
624 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime());
627 return _video_position;
631 FilmViewer::time () const
633 if (_audio.isStreamRunning ()) {
634 return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
635 DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
638 return _video_position;
642 FilmViewer::audio_callback (void* out_p, unsigned int frames)
645 optional<DCPTime> t = _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
646 if (!t || DCPTime(uncorrected_time() - *t) < one_video_frame()) {
647 /* There was an underrun or this audio is on time; carry on */
650 /* The audio we just got was (very) late; drop it and get some more. */
653 boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
655 _latency_history.push_back (_audio.getStreamLatency ());
656 if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
657 _latency_history.pop_front ();
665 FilmViewer::average_latency () const
667 boost::mutex::scoped_lock lm (_latency_history_mutex);
668 if (_latency_history.empty()) {
673 BOOST_FOREACH (Frame i, _latency_history) {
677 return total / _latency_history.size();
681 FilmViewer::set_dcp_decode_reduction (optional<int> reduction)
683 _dcp_decode_reduction = reduction;
685 _player->set_dcp_decode_reduction (reduction);
690 FilmViewer::dcp_decode_reduction () const
692 return _dcp_decode_reduction;
696 FilmViewer::one_video_frame () const
698 return DCPTime::from_frames (1, _film->video_frame_rate());
701 /** Open a dialog box showing our film's closed captions */
703 FilmViewer::show_closed_captions ()
705 _closed_captions_dialog->Show();
709 FilmViewer::seek_by (DCPTime by, bool accurate)
711 seek (_video_position + by, accurate);
715 FilmViewer::set_pad_black (bool p)