2 Copyright (C) 2013-2021 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 #include "atmos_decoder.h"
23 #include "audio_buffers.h"
24 #include "audio_content.h"
25 #include "audio_decoder.h"
26 #include "audio_processor.h"
27 #include "compose.hpp"
29 #include "content_audio.h"
30 #include "content_video.h"
31 #include "dcp_content.h"
32 #include "dcp_decoder.h"
33 #include "dcpomatic_log.h"
35 #include "decoder_factory.h"
36 #include "ffmpeg_content.h"
38 #include "frame_rate_change.h"
40 #include "image_decoder.h"
43 #include "maths_util.h"
46 #include "player_video.h"
49 #include "raw_image_proxy.h"
50 #include "render_text.h"
52 #include "text_content.h"
53 #include "text_decoder.h"
55 #include "video_decoder.h"
57 #include <dcp/reel_closed_caption_asset.h>
58 #include <dcp/reel_picture_asset.h>
59 #include <dcp/reel_sound_asset.h>
60 #include <dcp/reel_subtitle_asset.h>
70 using std::dynamic_pointer_cast;
73 using std::make_shared;
74 using std::make_shared;
79 using std::shared_ptr;
82 using boost::optional;
83 using boost::scoped_ptr;
84 #if BOOST_VERSION >= 106100
85 using namespace boost::placeholders;
87 using namespace dcpomatic;
90 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
91 int const PlayerProperty::PLAYLIST = 701;
92 int const PlayerProperty::FILM_CONTAINER = 702;
93 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
94 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
95 int const PlayerProperty::PLAYBACK_LENGTH = 705;
96 int const PlayerProperty::IGNORE_VIDEO = 706;
97 int const PlayerProperty::IGNORE_AUDIO = 707;
98 int const PlayerProperty::IGNORE_TEXT = 708;
99 int const PlayerProperty::ALWAYS_BURN_OPEN_SUBTITLES = 709;
100 int const PlayerProperty::PLAY_REFERENCED = 710;
103 Player::Player (shared_ptr<const Film> film, Image::Alignment subtitle_alignment)
106 , _ignore_video(false)
107 , _ignore_audio(false)
108 , _ignore_text(false)
109 , _always_burn_open_subtitles(false)
111 , _tolerant (film->tolerant())
112 , _play_referenced(false)
113 , _audio_merger (_film->audio_frame_rate())
114 , _subtitle_alignment (subtitle_alignment)
120 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
122 , _playlist (playlist_)
124 , _ignore_video(false)
125 , _ignore_audio(false)
126 , _ignore_text(false)
127 , _always_burn_open_subtitles(false)
129 , _tolerant (film->tolerant())
130 , _play_referenced(false)
131 , _audio_merger (_film->audio_frame_rate())
140 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
141 /* The butler must hear about this first, so since we are proxying this through to the butler we must
144 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
145 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
146 set_video_container_size (_film->frame_size ());
148 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
151 seek (DCPTime (), true);
156 have_video (shared_ptr<const Content> content)
158 return static_cast<bool>(content->video) && content->video->use() && content->can_be_played();
163 have_audio (shared_ptr<const Content> content)
165 return static_cast<bool>(content->audio) && content->can_be_played();
170 Player::setup_pieces ()
172 boost::mutex::scoped_lock lm (_mutex);
174 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
176 auto old_pieces = _pieces;
179 auto playlist_content = playlist()->content();
180 bool const have_threed = std::any_of(
181 playlist_content.begin(),
182 playlist_content.end(),
183 [](shared_ptr<const Content> c) {
184 return c->video && (c->video->frame_type() == VideoFrameType::THREE_D_LEFT || c->video->frame_type() == VideoFrameType::THREE_D_RIGHT);
189 _shuffler.reset(new Shuffler());
190 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
193 for (auto i: playlist()->content()) {
195 if (!i->paths_valid ()) {
199 if (_ignore_video && _ignore_audio && i->text.empty()) {
200 /* We're only interested in text and this content has none */
204 shared_ptr<Decoder> old_decoder;
205 for (auto j: old_pieces) {
206 if (j->content == i) {
207 old_decoder = j->decoder;
212 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
213 DCPOMATIC_ASSERT (decoder);
215 FrameRateChange frc (_film, i);
217 if (decoder->video && _ignore_video) {
218 decoder->video->set_ignore (true);
221 if (decoder->audio && _ignore_audio) {
222 decoder->audio->set_ignore (true);
226 for (auto i: decoder->text) {
227 i->set_ignore (true);
231 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
233 dcp->set_decode_referenced (_play_referenced);
234 if (_play_referenced) {
235 dcp->set_forced_reduction (_dcp_decode_reduction);
239 auto piece = make_shared<Piece>(i, decoder, frc);
240 _pieces.push_back (piece);
242 if (decoder->video) {
244 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
245 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler.get(), weak_ptr<Piece>(piece), _1));
247 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
251 if (decoder->audio) {
252 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
255 auto j = decoder->text.begin();
257 while (j != decoder->text.end()) {
258 (*j)->BitmapStart.connect (
259 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
261 (*j)->PlainStart.connect (
262 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
265 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
271 if (decoder->atmos) {
272 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
276 _stream_states.clear ();
277 for (auto i: _pieces) {
278 if (i->content->audio) {
279 for (auto j: i->content->audio->streams()) {
280 _stream_states[j] = StreamState (i, i->content->position ());
285 auto ignore_overlap = [](shared_ptr<VideoContent> v) {
286 return v && v->use() && v->frame_type() != VideoFrameType::THREE_D_LEFT && v->frame_type() != VideoFrameType::THREE_D_RIGHT;
289 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
290 if (ignore_overlap((*i)->content->video)) {
291 /* Look for content later in the content list with in-use video that overlaps this */
292 auto const period = DCPTimePeriod((*i)->content->position(), (*i)->content->end(_film));
293 for (auto j = std::next(i); j != _pieces.end(); ++j) {
294 if ((*j)->content->video && ignore_overlap((*j)->content->video)) {
295 (*i)->ignore_video = DCPTimePeriod((*j)->content->position(), (*j)->content->end(_film)).overlap(period);
301 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
302 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
304 _next_video_time = boost::none;
305 _next_video_eyes = Eyes::BOTH;
306 _next_audio_time = boost::none;
311 Player::playlist_content_change (ChangeType type, int property, bool frequent)
313 if (property == VideoContentProperty::CROP) {
314 if (type == ChangeType::DONE) {
315 boost::mutex::scoped_lock lm (_mutex);
316 for (auto const& i: _delay) {
317 i.first->reset_metadata(_film, _video_container_size);
321 if (type == ChangeType::PENDING) {
322 /* The player content is probably about to change, so we can't carry on
323 until that has happened and we've rebuilt our pieces. Stop pass()
324 and seek() from working until then.
327 } else if (type == ChangeType::DONE) {
328 /* A change in our content has gone through. Re-build our pieces. */
331 } else if (type == ChangeType::CANCELLED) {
336 Change (type, property, frequent);
341 Player::set_video_container_size (dcp::Size s)
343 ChangeSignaller<Player, int> cc(this, PlayerProperty::VIDEO_CONTAINER_SIZE);
345 if (s == _video_container_size) {
350 _video_container_size = s;
353 boost::mutex::scoped_lock lm(_black_image_mutex);
354 _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
355 _black_image->make_black ();
361 Player::playlist_change (ChangeType type)
363 if (type == ChangeType::DONE) {
366 Change (type, PlayerProperty::PLAYLIST, false);
371 Player::film_change (ChangeType type, Film::Property p)
373 /* Here we should notice Film properties that affect our output, and
374 alert listeners that our output now would be different to how it was
375 last time we were run.
378 if (p == Film::Property::CONTAINER) {
379 Change (type, PlayerProperty::FILM_CONTAINER, false);
380 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
381 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
382 so we need new pieces here.
384 if (type == ChangeType::DONE) {
387 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
388 } else if (p == Film::Property::AUDIO_PROCESSOR) {
389 if (type == ChangeType::DONE && _film->audio_processor ()) {
390 boost::mutex::scoped_lock lm (_mutex);
391 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
393 } else if (p == Film::Property::AUDIO_CHANNELS) {
394 if (type == ChangeType::DONE) {
395 boost::mutex::scoped_lock lm (_mutex);
396 _audio_merger.clear ();
402 shared_ptr<PlayerVideo>
403 Player::black_player_video_frame (Eyes eyes) const
405 boost::mutex::scoped_lock lm(_black_image_mutex);
407 return std::make_shared<PlayerVideo> (
408 std::make_shared<const RawImageProxy>(_black_image),
411 _video_container_size,
412 _video_container_size,
415 PresetColourConversion::all().front().conversion,
417 std::weak_ptr<Content>(),
418 boost::optional<Frame>(),
425 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
427 auto s = t - piece->content->position ();
428 s = min (piece->content->length_after_trim(_film), s);
429 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
431 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
432 then convert that ContentTime to frames at the content's rate. However this fails for
433 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
434 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
436 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
438 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
443 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
445 /* See comment in dcp_to_content_video */
446 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
447 return d + piece->content->position();
452 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
454 auto s = t - piece->content->position ();
455 s = min (piece->content->length_after_trim(_film), s);
456 /* See notes in dcp_to_content_video */
457 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
462 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
464 /* See comment in dcp_to_content_video */
465 return DCPTime::from_frames (f, _film->audio_frame_rate())
466 - DCPTime (piece->content->trim_start(), piece->frc)
467 + piece->content->position();
472 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
474 auto s = t - piece->content->position ();
475 s = min (piece->content->length_after_trim(_film), s);
476 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
481 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
483 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
487 vector<shared_ptr<Font>>
488 Player::get_subtitle_fonts ()
490 boost::mutex::scoped_lock lm (_mutex);
492 vector<shared_ptr<Font>> fonts;
493 for (auto piece: _pieces) {
494 for (auto text: piece->content->text) {
495 auto text_fonts = text->fonts();
496 copy (text_fonts.begin(), text_fonts.end(), back_inserter(fonts));
504 /** Set this player never to produce any video data */
506 Player::set_ignore_video ()
508 ChangeSignaller<Player, int> cc(this, PlayerProperty::IGNORE_VIDEO);
509 _ignore_video = true;
515 Player::set_ignore_audio ()
517 ChangeSignaller<Player, int> cc(this, PlayerProperty::IGNORE_AUDIO);
518 _ignore_audio = true;
524 Player::set_ignore_text ()
526 ChangeSignaller<Player, int> cc(this, PlayerProperty::IGNORE_TEXT);
532 /** Set the player to always burn open texts into the image regardless of the content settings */
534 Player::set_always_burn_open_subtitles ()
536 ChangeSignaller<Player, int> cc(this, PlayerProperty::ALWAYS_BURN_OPEN_SUBTITLES);
537 _always_burn_open_subtitles = true;
541 /** Sets up the player to be faster, possibly at the expense of quality */
551 Player::set_play_referenced ()
553 ChangeSignaller<Player, int> cc(this, PlayerProperty::PLAY_REFERENCED);
554 _play_referenced = true;
562 boost::mutex::scoped_lock lm (_mutex);
565 /* We can't pass in this state */
566 LOG_DEBUG_PLAYER_NC ("Player is suspended");
570 if (_playback_length.load() == DCPTime()) {
571 /* Special; just give one black frame */
572 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
576 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
578 shared_ptr<Piece> earliest_content;
579 optional<DCPTime> earliest_time;
581 for (auto i: _pieces) {
586 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
587 if (t > i->content->end(_film)) {
591 /* Given two choices at the same time, pick the one with texts so we see it before
594 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
596 earliest_content = i;
610 if (earliest_content) {
614 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
615 earliest_time = _black.position ();
619 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
620 earliest_time = _silent.position ();
627 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
628 earliest_content->done = earliest_content->decoder->pass ();
629 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
630 if (dcp && !_play_referenced && dcp->reference_audio()) {
631 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
632 to `hide' the fact that no audio was emitted during the referenced DCP (though
633 we need to behave as though it was).
635 _next_audio_time = dcp->end (_film);
640 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
641 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
642 _black.set_position (_black.position() + one_video_frame());
646 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
647 DCPTimePeriod period (_silent.period_at_position());
648 if (_next_audio_time) {
649 /* Sometimes the thing that happened last finishes fractionally before
650 or after this silence. Bodge the start time of the silence to fix it.
651 I think this is nothing to worry about since we will just add or
652 remove a little silence at the end of some content.
654 int64_t const error = labs(period.from.get() - _next_audio_time->get());
655 /* Let's not worry about less than a frame at 24fps */
656 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
657 if (error >= too_much_error) {
658 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
660 DCPOMATIC_ASSERT (error < too_much_error);
661 period.from = *_next_audio_time;
663 if (period.duration() > one_video_frame()) {
664 period.to = period.from + one_video_frame();
667 _silent.set_position (period.to);
675 /* Emit any audio that is ready */
677 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
678 of our streams, or the position of the _silent. First, though we choose only streams that are less than
679 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
680 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
681 that will never come, causing bugs like #2101.
683 constexpr int ignore_streams_behind = 5;
685 using state_pair = std::pair<AudioStreamPtr, StreamState>;
687 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
688 auto latest_last_push_end = std::max_element(
689 _stream_states.begin(),
690 _stream_states.end(),
691 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
694 if (latest_last_push_end != _stream_states.end()) {
695 LOG_DEBUG_PLAYER("Leading audio stream is in %1 at %2", latest_last_push_end->second.piece->content->path(0), to_string(latest_last_push_end->second.last_push_end));
698 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
699 std::map<AudioStreamPtr, StreamState> alive_stream_states;
700 for (auto const& i: _stream_states) {
701 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
702 alive_stream_states.insert(i);
704 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
708 auto pull_to = _playback_length.load();
709 for (auto const& i: alive_stream_states) {
710 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
711 pull_to = i.second.last_push_end;
714 if (!_silent.done() && _silent.position() < pull_to) {
715 pull_to = _silent.position();
718 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
719 auto audio = _audio_merger.pull (pull_to);
720 for (auto i = audio.begin(); i != audio.end(); ++i) {
721 if (_next_audio_time && i->second < *_next_audio_time) {
722 /* This new data comes before the last we emitted (or the last seek); discard it */
723 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
728 } else if (_next_audio_time && i->second > *_next_audio_time) {
729 /* There's a gap between this data and the last we emitted; fill with silence */
730 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
733 emit_audio (i->first, i->second);
740 for (auto const& i: _delay) {
741 do_emit_video(i.first, i.second);
744 /* Perhaps we should have Empty entries for both eyes in the 3D case (somehow).
745 * However, if we have L and R video files, and one is shorter than the other,
746 * the fill code in ::video mostly takes care of filling in the gaps.
747 * However, since it fills at the point when it knows there is more video coming
748 * at time t (so it should fill any gap up to t) it can't do anything right at the
749 * end. This is particularly bad news if the last frame emitted is a LEFT
750 * eye, as the MXF writer will complain about the 3D sequence being wrong.
751 * Here's a hack to workaround that particular case.
753 if (_next_video_eyes && _next_video_time && *_next_video_eyes == Eyes::RIGHT) {
754 do_emit_video (black_player_video_frame(Eyes::RIGHT), *_next_video_time);
762 /** @return Open subtitles for the frame at the given time, converted to images */
763 optional<PositionImage>
764 Player::open_subtitles_for_frame (DCPTime time) const
766 list<PositionImage> captions;
767 int const vfr = _film->video_frame_rate();
771 _active_texts[TextType::OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
774 /* Bitmap subtitles */
775 for (auto i: j.bitmap) {
780 /* i.image will already have been scaled to fit _video_container_size */
781 dcp::Size scaled_size (i.rectangle.width * _video_container_size.load().width, i.rectangle.height * _video_container_size.load().height);
787 lrint(_video_container_size.load().width * i.rectangle.x),
788 lrint(_video_container_size.load().height * i.rectangle.y)
794 /* String subtitles (rendered to an image) */
795 if (!j.string.empty()) {
796 auto s = render_text(j.string, _video_container_size, time, vfr);
797 copy (s.begin(), s.end(), back_inserter (captions));
801 if (captions.empty()) {
805 return merge (captions, _subtitle_alignment);
810 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
816 auto piece = weak_piece.lock ();
821 if (!piece->content->video->use()) {
825 FrameRateChange frc (_film, piece->content);
826 if (frc.skip && (video.frame % 2) == 1) {
830 /* Time of the first frame we will emit */
831 DCPTime const time = content_video_to_dcp (piece, video.frame);
832 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
834 /* Discard if it's before the content's period or the last accurate seek. We can't discard
835 if it's after the content's period here as in that case we still need to fill any gap between
836 `now' and the end of the content's period.
838 if (time < piece->content->position() || (_next_video_time && time < *_next_video_time)) {
842 if (piece->ignore_video && piece->ignore_video->contains(time)) {
846 /* Fill gaps that we discover now that we have some video which needs to be emitted.
847 This is where we need to fill to.
849 DCPTime fill_to = min (time, piece->content->end(_film));
851 if (_next_video_time) {
852 DCPTime fill_from = max (*_next_video_time, piece->content->position());
854 /* Fill if we have more than half a frame to do */
855 if ((fill_to - fill_from) > one_video_frame() / 2) {
856 auto last = _last_video.find (weak_piece);
857 if (_film->three_d()) {
858 auto fill_to_eyes = video.eyes;
859 if (fill_to_eyes == Eyes::BOTH) {
860 fill_to_eyes = Eyes::LEFT;
862 if (fill_to == piece->content->end(_film)) {
863 /* Don't fill after the end of the content */
864 fill_to_eyes = Eyes::LEFT;
867 auto eyes = _next_video_eyes.get_value_or(Eyes::LEFT);
868 if (eyes == Eyes::BOTH) {
871 while (j < fill_to || eyes != fill_to_eyes) {
872 if (last != _last_video.end()) {
873 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
874 auto copy = last->second->shallow_copy();
875 copy->set_eyes (eyes);
876 emit_video (copy, j);
878 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
879 emit_video (black_player_video_frame(eyes), j);
881 if (eyes == Eyes::RIGHT) {
882 j += one_video_frame();
884 eyes = increment_eyes (eyes);
887 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
888 if (last != _last_video.end()) {
889 emit_video (last->second, j);
891 emit_video (black_player_video_frame(Eyes::BOTH), j);
898 auto const content_video = piece->content->video;
900 _last_video[weak_piece] = std::make_shared<PlayerVideo>(
902 content_video->actual_crop(),
903 content_video->fade (_film, video.frame),
905 content_video->scaled_size(_film->frame_size()),
906 _video_container_size,
908 content_video->pixel_quanta()
910 _video_container_size,
913 content_video->colour_conversion(),
914 content_video->range(),
921 for (int i = 0; i < frc.repeat; ++i) {
922 if (t < piece->content->end(_film)) {
923 emit_video (_last_video[weak_piece], t);
925 t += one_video_frame ();
931 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
937 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
939 auto piece = weak_piece.lock ();
944 auto content = piece->content->audio;
945 DCPOMATIC_ASSERT (content);
947 int const rfr = content->resampled_frame_rate (_film);
949 /* Compute time in the DCP */
950 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
951 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
953 /* And the end of this block in the DCP */
954 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
956 /* Remove anything that comes before the start or after the end of the content */
957 if (time < piece->content->position()) {
958 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
960 /* This audio is entirely discarded */
963 content_audio.audio = cut.first;
965 } else if (time > piece->content->end(_film)) {
968 } else if (end > piece->content->end(_film)) {
969 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
970 if (remaining_frames == 0) {
973 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
976 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
980 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
981 if (content->gain() != 0 || !fade_coeffs.empty()) {
982 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
983 if (!fade_coeffs.empty()) {
984 /* Apply both fade and gain */
985 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
986 auto const channels = gain_buffers->channels();
987 auto const frames = fade_coeffs.size();
988 auto data = gain_buffers->data();
989 auto const gain = db_to_linear (content->gain());
990 for (auto channel = 0; channel < channels; ++channel) {
991 for (auto frame = 0U; frame < frames; ++frame) {
992 data[channel][frame] *= gain * fade_coeffs[frame];
996 /* Just apply gain */
997 gain_buffers->apply_gain (content->gain());
999 content_audio.audio = gain_buffers;
1004 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
1008 if (_audio_processor) {
1009 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1014 _audio_merger.push (content_audio.audio, time);
1015 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1016 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1021 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1027 auto piece = weak_piece.lock ();
1028 auto content = weak_content.lock ();
1029 if (!piece || !content) {
1034 for (auto& sub: subtitle.subs)
1036 /* Apply content's subtitle offsets */
1037 sub.rectangle.x += content->x_offset ();
1038 sub.rectangle.y += content->y_offset ();
1040 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1041 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1042 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1044 /* Apply content's subtitle scale */
1045 sub.rectangle.width *= content->x_scale ();
1046 sub.rectangle.height *= content->y_scale ();
1048 auto image = sub.image;
1050 /* We will scale the subtitle up to fit _video_container_size */
1051 int const width = sub.rectangle.width * _video_container_size.load().width;
1052 int const height = sub.rectangle.height * _video_container_size.load().height;
1053 if (width == 0 || height == 0) {
1057 dcp::Size scaled_size (width, height);
1058 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1061 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1062 _active_texts[content->type()].add_from(weak_content, ps, from);
1067 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1073 auto piece = weak_piece.lock ();
1074 auto content = weak_content.lock ();
1075 if (!piece || !content) {
1080 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1082 if (from > piece->content->end(_film)) {
1086 for (auto s: subtitle.subs) {
1087 s.set_h_position (s.h_position() + content->x_offset());
1088 s.set_v_position (s.v_position() + content->y_offset());
1089 float const xs = content->x_scale();
1090 float const ys = content->y_scale();
1091 float size = s.size();
1093 /* Adjust size to express the common part of the scaling;
1094 e.g. if xs = ys = 0.5 we scale size by 2.
1096 if (xs > 1e-5 && ys > 1e-5) {
1097 size *= 1 / min (1 / xs, 1 / ys);
1101 /* Then express aspect ratio changes */
1102 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1103 s.set_aspect_adjust (xs / ys);
1106 s.set_in (dcp::Time(from.seconds(), 1000));
1107 ps.string.push_back (s);
1110 _active_texts[content->type()].add_from(weak_content, ps, from);
1115 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1121 auto content = weak_content.lock ();
1126 if (!_active_texts[content->type()].have(weak_content)) {
1130 auto piece = weak_piece.lock ();
1135 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1137 if (dcp_to > piece->content->end(_film)) {
1141 auto from = _active_texts[content->type()].add_to(weak_content, dcp_to);
1143 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1144 if (content->use() && !always && !content->burn()) {
1145 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1151 Player::seek (DCPTime time, bool accurate)
1153 boost::mutex::scoped_lock lm (_mutex);
1154 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1157 /* We can't seek in this state */
1162 _shuffler->clear ();
1167 if (_audio_processor) {
1168 _audio_processor->flush ();
1171 _audio_merger.clear ();
1172 std::for_each(_active_texts.begin(), _active_texts.end(), [](ActiveText& a) { a.clear(); });
1174 for (auto i: _pieces) {
1175 if (time < i->content->position()) {
1176 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1177 we must seek this (following) content accurately, otherwise when we come to the end of the current
1178 content we may not start right at the beginning of the next, causing a gap (if the next content has
1179 been trimmed to a point between keyframes, or something).
1181 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1183 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1184 /* During; seek to position */
1185 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1188 /* After; this piece is done */
1194 _next_video_time = time;
1195 _next_video_eyes = Eyes::LEFT;
1196 _next_audio_time = time;
1198 _next_video_time = boost::none;
1199 _next_video_eyes = boost::none;
1200 _next_audio_time = boost::none;
1203 _black.set_position (time);
1204 _silent.set_position (time);
1206 _last_video.clear ();
1211 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1213 if (!_film->three_d()) {
1214 if (pv->eyes() == Eyes::LEFT) {
1215 /* Use left-eye images for both eyes... */
1216 pv->set_eyes (Eyes::BOTH);
1217 } else if (pv->eyes() == Eyes::RIGHT) {
1218 /* ...and discard the right */
1223 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
1224 player before the video that requires them.
1226 _delay.push_back (make_pair (pv, time));
1228 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1229 _next_video_time = time + one_video_frame();
1231 _next_video_eyes = increment_eyes (pv->eyes());
1233 if (_delay.size() < 3) {
1237 auto to_do = _delay.front();
1239 do_emit_video (to_do.first, to_do.second);
1244 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1246 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1247 std::for_each(_active_texts.begin(), _active_texts.end(), [time](ActiveText& a) { a.clear_before(time); });
1250 auto subtitles = open_subtitles_for_frame (time);
1252 pv->set_text (subtitles.get ());
1260 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1262 /* Log if the assert below is about to fail */
1263 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1264 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1267 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1268 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1269 Audio (data, time, _film->audio_frame_rate());
1270 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1275 Player::fill_audio (DCPTimePeriod period)
1277 if (period.from == period.to) {
1281 DCPOMATIC_ASSERT (period.from < period.to);
1283 DCPTime t = period.from;
1284 while (t < period.to) {
1285 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1286 Frame const samples = block.frames_round(_film->audio_frame_rate());
1288 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1289 silence->make_silent ();
1290 emit_audio (silence, t);
1298 Player::one_video_frame () const
1300 return DCPTime::from_frames (1, _film->video_frame_rate ());
1304 pair<shared_ptr<AudioBuffers>, DCPTime>
1305 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1307 auto const discard_time = discard_to - time;
1308 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1309 auto remaining_frames = audio->frames() - discard_frames;
1310 if (remaining_frames <= 0) {
1311 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1313 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1314 return make_pair(cut, time + discard_time);
1319 Player::set_dcp_decode_reduction (optional<int> reduction)
1321 ChangeSignaller<Player, int> cc(this, PlayerProperty::DCP_DECODE_REDUCTION);
1323 if (reduction == _dcp_decode_reduction.load()) {
1328 _dcp_decode_reduction = reduction;
1334 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t) const
1336 boost::mutex::scoped_lock lm (_mutex);
1338 for (auto i: _pieces) {
1339 if (i->content == content) {
1340 return content_time_to_dcp (i, t);
1344 /* We couldn't find this content; perhaps things are being changed over */
1349 optional<ContentTime>
1350 Player::dcp_to_content_time (shared_ptr<const Content> content, DCPTime t) const
1352 boost::mutex::scoped_lock lm (_mutex);
1354 for (auto i: _pieces) {
1355 if (i->content == content) {
1356 return dcp_to_content_time (i, t);
1360 /* We couldn't find this content; perhaps things are being changed over */
1365 shared_ptr<const Playlist>
1366 Player::playlist () const
1368 return _playlist ? _playlist : _film->playlist();
1373 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1379 auto piece = weak_piece.lock ();
1380 DCPOMATIC_ASSERT (piece);
1382 auto const vfr = _film->video_frame_rate();
1384 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1385 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1389 Atmos (data.data, dcp_time, data.metadata);
1394 Player::signal_change(ChangeType type, int property)
1396 Change(type, property, false);