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;
98 Player::Player (shared_ptr<const Film> film, Image::Alignment subtitle_alignment)
101 , _ignore_video(false)
102 , _ignore_audio(false)
103 , _ignore_text(false)
104 , _always_burn_open_subtitles(false)
106 , _tolerant (film->tolerant())
107 , _play_referenced(false)
108 , _audio_merger (_film->audio_frame_rate())
109 , _subtitle_alignment (subtitle_alignment)
115 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
117 , _playlist (playlist_)
119 , _ignore_video(false)
120 , _ignore_audio(false)
121 , _ignore_text(false)
122 , _always_burn_open_subtitles(false)
124 , _tolerant (film->tolerant())
125 , _play_referenced(false)
126 , _audio_merger (_film->audio_frame_rate())
135 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
136 /* The butler must hear about this first, so since we are proxying this through to the butler we must
139 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
140 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
141 set_video_container_size (_film->frame_size ());
143 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
146 seek (DCPTime (), true);
151 have_video (shared_ptr<const Content> content)
153 return static_cast<bool>(content->video) && content->video->use() && content->can_be_played();
158 have_audio (shared_ptr<const Content> content)
160 return static_cast<bool>(content->audio) && content->can_be_played();
165 Player::setup_pieces ()
167 boost::mutex::scoped_lock lm (_mutex);
169 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
171 auto old_pieces = _pieces;
174 auto playlist_content = playlist()->content();
175 bool const have_threed = std::any_of(
176 playlist_content.begin(),
177 playlist_content.end(),
178 [](shared_ptr<const Content> c) {
179 return c->video && (c->video->frame_type() == VideoFrameType::THREE_D_LEFT || c->video->frame_type() == VideoFrameType::THREE_D_RIGHT);
184 _shuffler.reset(new Shuffler());
185 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
188 for (auto i: playlist()->content()) {
190 if (!i->paths_valid ()) {
194 if (_ignore_video && _ignore_audio && i->text.empty()) {
195 /* We're only interested in text and this content has none */
199 shared_ptr<Decoder> old_decoder;
200 for (auto j: old_pieces) {
201 if (j->content == i) {
202 old_decoder = j->decoder;
207 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
208 DCPOMATIC_ASSERT (decoder);
210 FrameRateChange frc (_film, i);
212 if (decoder->video && _ignore_video) {
213 decoder->video->set_ignore (true);
216 if (decoder->audio && _ignore_audio) {
217 decoder->audio->set_ignore (true);
221 for (auto i: decoder->text) {
222 i->set_ignore (true);
226 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
228 dcp->set_decode_referenced (_play_referenced);
229 if (_play_referenced) {
230 dcp->set_forced_reduction (_dcp_decode_reduction);
234 auto piece = make_shared<Piece>(i, decoder, frc);
235 _pieces.push_back (piece);
237 if (decoder->video) {
239 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
240 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler.get(), weak_ptr<Piece>(piece), _1));
242 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
246 if (decoder->audio) {
247 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
250 auto j = decoder->text.begin();
252 while (j != decoder->text.end()) {
253 (*j)->BitmapStart.connect (
254 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
256 (*j)->PlainStart.connect (
257 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
260 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
266 if (decoder->atmos) {
267 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
271 _stream_states.clear ();
272 for (auto i: _pieces) {
273 if (i->content->audio) {
274 for (auto j: i->content->audio->streams()) {
275 _stream_states[j] = StreamState (i, i->content->position ());
280 auto ignore_overlap = [](shared_ptr<VideoContent> v) {
281 return v && v->use() && v->frame_type() != VideoFrameType::THREE_D_LEFT && v->frame_type() != VideoFrameType::THREE_D_RIGHT;
284 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
285 if (ignore_overlap((*i)->content->video)) {
286 /* Look for content later in the content list with in-use video that overlaps this */
287 auto const period = DCPTimePeriod((*i)->content->position(), (*i)->content->end(_film));
288 for (auto j = std::next(i); j != _pieces.end(); ++j) {
289 if ((*j)->content->video && ignore_overlap((*j)->content->video)) {
290 (*i)->ignore_video = DCPTimePeriod((*j)->content->position(), (*j)->content->end(_film)).overlap(period);
296 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
297 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
299 _next_video_time = boost::none;
300 _next_video_eyes = Eyes::BOTH;
301 _next_audio_time = boost::none;
306 Player::playlist_content_change (ChangeType type, int property, bool frequent)
308 if (property == VideoContentProperty::CROP) {
309 if (type == ChangeType::DONE) {
310 auto const vcs = video_container_size();
311 boost::mutex::scoped_lock lm (_mutex);
312 for (auto const& i: _delay) {
313 i.first->reset_metadata (_film, vcs);
317 if (type == ChangeType::PENDING) {
318 /* The player content is probably about to change, so we can't carry on
319 until that has happened and we've rebuilt our pieces. Stop pass()
320 and seek() from working until then.
323 } else if (type == ChangeType::DONE) {
324 /* A change in our content has gone through. Re-build our pieces. */
327 } else if (type == ChangeType::CANCELLED) {
332 Change (type, property, frequent);
337 Player::set_video_container_size (dcp::Size s)
339 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
341 if (s == _video_container_size) {
342 Change(ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
346 _video_container_size = s;
349 boost::mutex::scoped_lock lm (_mutex);
350 _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
351 _black_image->make_black ();
354 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
359 Player::playlist_change (ChangeType type)
361 if (type == ChangeType::DONE) {
364 Change (type, PlayerProperty::PLAYLIST, false);
369 Player::film_change (ChangeType type, Film::Property p)
371 /* Here we should notice Film properties that affect our output, and
372 alert listeners that our output now would be different to how it was
373 last time we were run.
376 if (p == Film::Property::CONTAINER) {
377 Change (type, PlayerProperty::FILM_CONTAINER, false);
378 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
379 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
380 so we need new pieces here.
382 if (type == ChangeType::DONE) {
385 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
386 } else if (p == Film::Property::AUDIO_PROCESSOR) {
387 if (type == ChangeType::DONE && _film->audio_processor ()) {
388 boost::mutex::scoped_lock lm (_mutex);
389 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
391 } else if (p == Film::Property::AUDIO_CHANNELS) {
392 if (type == ChangeType::DONE) {
393 boost::mutex::scoped_lock lm (_mutex);
394 _audio_merger.clear ();
400 shared_ptr<PlayerVideo>
401 Player::black_player_video_frame (Eyes eyes) const
403 return std::make_shared<PlayerVideo> (
404 std::make_shared<const RawImageProxy>(_black_image),
407 _video_container_size,
408 _video_container_size,
411 PresetColourConversion::all().front().conversion,
413 std::weak_ptr<Content>(),
414 boost::optional<Frame>(),
421 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
423 auto s = t - piece->content->position ();
424 s = min (piece->content->length_after_trim(_film), s);
425 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
427 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
428 then convert that ContentTime to frames at the content's rate. However this fails for
429 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
430 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
432 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
434 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
439 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
441 /* See comment in dcp_to_content_video */
442 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
443 return d + piece->content->position();
448 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
450 auto s = t - piece->content->position ();
451 s = min (piece->content->length_after_trim(_film), s);
452 /* See notes in dcp_to_content_video */
453 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
458 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
460 /* See comment in dcp_to_content_video */
461 return DCPTime::from_frames (f, _film->audio_frame_rate())
462 - DCPTime (piece->content->trim_start(), piece->frc)
463 + piece->content->position();
468 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
470 auto s = t - piece->content->position ();
471 s = min (piece->content->length_after_trim(_film), s);
472 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
477 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
479 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
483 vector<shared_ptr<Font>>
484 Player::get_subtitle_fonts ()
486 boost::mutex::scoped_lock lm (_mutex);
488 vector<shared_ptr<Font>> fonts;
489 for (auto piece: _pieces) {
490 for (auto text: piece->content->text) {
491 auto text_fonts = text->fonts();
492 copy (text_fonts.begin(), text_fonts.end(), back_inserter(fonts));
500 /** Set this player never to produce any video data */
502 Player::set_ignore_video ()
504 _ignore_video = true;
510 Player::set_ignore_audio ()
512 _ignore_audio = true;
518 Player::set_ignore_text ()
525 /** Set the player to always burn open texts into the image regardless of the content settings */
527 Player::set_always_burn_open_subtitles ()
529 _always_burn_open_subtitles = true;
533 /** Sets up the player to be faster, possibly at the expense of quality */
543 Player::set_play_referenced ()
545 _play_referenced = true;
553 boost::mutex::scoped_lock lm (_mutex);
556 /* We can't pass in this state */
557 LOG_DEBUG_PLAYER_NC ("Player is suspended");
561 if (_playback_length == DCPTime()) {
562 /* Special; just give one black frame */
563 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
567 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
569 shared_ptr<Piece> earliest_content;
570 optional<DCPTime> earliest_time;
572 for (auto i: _pieces) {
577 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
578 if (t > i->content->end(_film)) {
582 /* Given two choices at the same time, pick the one with texts so we see it before
585 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
587 earliest_content = i;
601 if (earliest_content) {
605 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
606 earliest_time = _black.position ();
610 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
611 earliest_time = _silent.position ();
618 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
619 earliest_content->done = earliest_content->decoder->pass ();
620 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
621 if (dcp && !_play_referenced && dcp->reference_audio()) {
622 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
623 to `hide' the fact that no audio was emitted during the referenced DCP (though
624 we need to behave as though it was).
626 _next_audio_time = dcp->end (_film);
631 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
632 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
633 _black.set_position (_black.position() + one_video_frame());
637 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
638 DCPTimePeriod period (_silent.period_at_position());
639 if (_next_audio_time) {
640 /* Sometimes the thing that happened last finishes fractionally before
641 or after this silence. Bodge the start time of the silence to fix it.
642 I think this is nothing to worry about since we will just add or
643 remove a little silence at the end of some content.
645 int64_t const error = labs(period.from.get() - _next_audio_time->get());
646 /* Let's not worry about less than a frame at 24fps */
647 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
648 if (error >= too_much_error) {
649 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
651 DCPOMATIC_ASSERT (error < too_much_error);
652 period.from = *_next_audio_time;
654 if (period.duration() > one_video_frame()) {
655 period.to = period.from + one_video_frame();
658 _silent.set_position (period.to);
666 /* Emit any audio that is ready */
668 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
669 of our streams, or the position of the _silent. First, though we choose only streams that are less than
670 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
671 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
672 that will never come, causing bugs like #2101.
674 constexpr int ignore_streams_behind = 5;
676 using state_pair = std::pair<AudioStreamPtr, StreamState>;
678 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
679 auto latest_last_push_end = std::max_element(
680 _stream_states.begin(),
681 _stream_states.end(),
682 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
685 if (latest_last_push_end != _stream_states.end()) {
686 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));
689 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
690 std::map<AudioStreamPtr, StreamState> alive_stream_states;
691 for (auto const& i: _stream_states) {
692 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
693 alive_stream_states.insert(i);
695 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
699 auto pull_to = _playback_length;
700 for (auto const& i: alive_stream_states) {
701 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
702 pull_to = i.second.last_push_end;
705 if (!_silent.done() && _silent.position() < pull_to) {
706 pull_to = _silent.position();
709 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
710 auto audio = _audio_merger.pull (pull_to);
711 for (auto i = audio.begin(); i != audio.end(); ++i) {
712 if (_next_audio_time && i->second < *_next_audio_time) {
713 /* This new data comes before the last we emitted (or the last seek); discard it */
714 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
719 } else if (_next_audio_time && i->second > *_next_audio_time) {
720 /* There's a gap between this data and the last we emitted; fill with silence */
721 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
724 emit_audio (i->first, i->second);
731 for (auto const& i: _delay) {
732 do_emit_video(i.first, i.second);
735 /* Perhaps we should have Empty entries for both eyes in the 3D case (somehow).
736 * However, if we have L and R video files, and one is shorter than the other,
737 * the fill code in ::video mostly takes care of filling in the gaps.
738 * However, since it fills at the point when it knows there is more video coming
739 * at time t (so it should fill any gap up to t) it can't do anything right at the
740 * end. This is particularly bad news if the last frame emitted is a LEFT
741 * eye, as the MXF writer will complain about the 3D sequence being wrong.
742 * Here's a hack to workaround that particular case.
744 if (_next_video_eyes && _next_video_time && *_next_video_eyes == Eyes::RIGHT) {
745 do_emit_video (black_player_video_frame(Eyes::RIGHT), *_next_video_time);
753 /** @return Open subtitles for the frame at the given time, converted to images */
754 optional<PositionImage>
755 Player::open_subtitles_for_frame (DCPTime time) const
757 list<PositionImage> captions;
758 int const vfr = _film->video_frame_rate();
762 _active_texts[static_cast<int>(TextType::OPEN_SUBTITLE)].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
765 /* Bitmap subtitles */
766 for (auto i: j.bitmap) {
771 /* i.image will already have been scaled to fit _video_container_size */
772 dcp::Size scaled_size (i.rectangle.width * _video_container_size.load().width, i.rectangle.height * _video_container_size.load().height);
778 lrint(_video_container_size.load().width * i.rectangle.x),
779 lrint(_video_container_size.load().height * i.rectangle.y)
785 /* String subtitles (rendered to an image) */
786 if (!j.string.empty()) {
787 auto s = render_text(j.string, _video_container_size, time, vfr);
788 copy (s.begin(), s.end(), back_inserter (captions));
792 if (captions.empty()) {
796 return merge (captions, _subtitle_alignment);
801 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
807 auto piece = weak_piece.lock ();
812 if (!piece->content->video->use()) {
816 FrameRateChange frc (_film, piece->content);
817 if (frc.skip && (video.frame % 2) == 1) {
821 /* Time of the first frame we will emit */
822 DCPTime const time = content_video_to_dcp (piece, video.frame);
823 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
825 /* Discard if it's before the content's period or the last accurate seek. We can't discard
826 if it's after the content's period here as in that case we still need to fill any gap between
827 `now' and the end of the content's period.
829 if (time < piece->content->position() || (_next_video_time && time < *_next_video_time)) {
833 if (piece->ignore_video && piece->ignore_video->contains(time)) {
837 /* Fill gaps that we discover now that we have some video which needs to be emitted.
838 This is where we need to fill to.
840 DCPTime fill_to = min (time, piece->content->end(_film));
842 if (_next_video_time) {
843 DCPTime fill_from = max (*_next_video_time, piece->content->position());
845 /* Fill if we have more than half a frame to do */
846 if ((fill_to - fill_from) > one_video_frame() / 2) {
847 auto last = _last_video.find (weak_piece);
848 if (_film->three_d()) {
849 auto fill_to_eyes = video.eyes;
850 if (fill_to_eyes == Eyes::BOTH) {
851 fill_to_eyes = Eyes::LEFT;
853 if (fill_to == piece->content->end(_film)) {
854 /* Don't fill after the end of the content */
855 fill_to_eyes = Eyes::LEFT;
858 auto eyes = _next_video_eyes.get_value_or(Eyes::LEFT);
859 if (eyes == Eyes::BOTH) {
862 while (j < fill_to || eyes != fill_to_eyes) {
863 if (last != _last_video.end()) {
864 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
865 auto copy = last->second->shallow_copy();
866 copy->set_eyes (eyes);
867 emit_video (copy, j);
869 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
870 emit_video (black_player_video_frame(eyes), j);
872 if (eyes == Eyes::RIGHT) {
873 j += one_video_frame();
875 eyes = increment_eyes (eyes);
878 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
879 if (last != _last_video.end()) {
880 emit_video (last->second, j);
882 emit_video (black_player_video_frame(Eyes::BOTH), j);
889 auto const content_video = piece->content->video;
891 _last_video[weak_piece] = std::make_shared<PlayerVideo>(
893 content_video->actual_crop(),
894 content_video->fade (_film, video.frame),
896 content_video->scaled_size(_film->frame_size()),
897 _video_container_size,
899 content_video->pixel_quanta()
901 _video_container_size,
904 content_video->colour_conversion(),
905 content_video->range(),
912 for (int i = 0; i < frc.repeat; ++i) {
913 if (t < piece->content->end(_film)) {
914 emit_video (_last_video[weak_piece], t);
916 t += one_video_frame ();
922 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
928 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
930 auto piece = weak_piece.lock ();
935 auto content = piece->content->audio;
936 DCPOMATIC_ASSERT (content);
938 int const rfr = content->resampled_frame_rate (_film);
940 /* Compute time in the DCP */
941 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
942 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
944 /* And the end of this block in the DCP */
945 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
947 /* Remove anything that comes before the start or after the end of the content */
948 if (time < piece->content->position()) {
949 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
951 /* This audio is entirely discarded */
954 content_audio.audio = cut.first;
956 } else if (time > piece->content->end(_film)) {
959 } else if (end > piece->content->end(_film)) {
960 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
961 if (remaining_frames == 0) {
964 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
967 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
971 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
972 if (content->gain() != 0 || !fade_coeffs.empty()) {
973 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
974 if (!fade_coeffs.empty()) {
975 /* Apply both fade and gain */
976 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
977 auto const channels = gain_buffers->channels();
978 auto const frames = fade_coeffs.size();
979 auto data = gain_buffers->data();
980 auto const gain = db_to_linear (content->gain());
981 for (auto channel = 0; channel < channels; ++channel) {
982 for (auto frame = 0U; frame < frames; ++frame) {
983 data[channel][frame] *= gain * fade_coeffs[frame];
987 /* Just apply gain */
988 gain_buffers->apply_gain (content->gain());
990 content_audio.audio = gain_buffers;
995 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
999 if (_audio_processor) {
1000 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1005 _audio_merger.push (content_audio.audio, time);
1006 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1007 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1012 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1018 auto piece = weak_piece.lock ();
1019 auto content = weak_content.lock ();
1020 if (!piece || !content) {
1025 for (auto& sub: subtitle.subs)
1027 /* Apply content's subtitle offsets */
1028 sub.rectangle.x += content->x_offset ();
1029 sub.rectangle.y += content->y_offset ();
1031 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1032 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1033 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1035 /* Apply content's subtitle scale */
1036 sub.rectangle.width *= content->x_scale ();
1037 sub.rectangle.height *= content->y_scale ();
1039 auto image = sub.image;
1041 /* We will scale the subtitle up to fit _video_container_size */
1042 int const width = sub.rectangle.width * _video_container_size.load().width;
1043 int const height = sub.rectangle.height * _video_container_size.load().height;
1044 if (width == 0 || height == 0) {
1048 dcp::Size scaled_size (width, height);
1049 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1052 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1053 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1058 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1064 auto piece = weak_piece.lock ();
1065 auto content = weak_content.lock ();
1066 if (!piece || !content) {
1071 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1073 if (from > piece->content->end(_film)) {
1077 for (auto s: subtitle.subs) {
1078 s.set_h_position (s.h_position() + content->x_offset());
1079 s.set_v_position (s.v_position() + content->y_offset());
1080 float const xs = content->x_scale();
1081 float const ys = content->y_scale();
1082 float size = s.size();
1084 /* Adjust size to express the common part of the scaling;
1085 e.g. if xs = ys = 0.5 we scale size by 2.
1087 if (xs > 1e-5 && ys > 1e-5) {
1088 size *= 1 / min (1 / xs, 1 / ys);
1092 /* Then express aspect ratio changes */
1093 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1094 s.set_aspect_adjust (xs / ys);
1097 s.set_in (dcp::Time(from.seconds(), 1000));
1098 ps.string.push_back (s);
1101 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1106 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1112 auto content = weak_content.lock ();
1117 if (!_active_texts[static_cast<int>(content->type())].have(weak_content)) {
1121 auto piece = weak_piece.lock ();
1126 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1128 if (dcp_to > piece->content->end(_film)) {
1132 auto from = _active_texts[static_cast<int>(content->type())].add_to(weak_content, dcp_to);
1134 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1135 if (content->use() && !always && !content->burn()) {
1136 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1142 Player::seek (DCPTime time, bool accurate)
1144 boost::mutex::scoped_lock lm (_mutex);
1145 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1148 /* We can't seek in this state */
1153 _shuffler->clear ();
1158 if (_audio_processor) {
1159 _audio_processor->flush ();
1162 _audio_merger.clear ();
1163 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1164 _active_texts[i].clear ();
1167 for (auto i: _pieces) {
1168 if (time < i->content->position()) {
1169 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1170 we must seek this (following) content accurately, otherwise when we come to the end of the current
1171 content we may not start right at the beginning of the next, causing a gap (if the next content has
1172 been trimmed to a point between keyframes, or something).
1174 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1176 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1177 /* During; seek to position */
1178 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1181 /* After; this piece is done */
1187 _next_video_time = time;
1188 _next_video_eyes = Eyes::LEFT;
1189 _next_audio_time = time;
1191 _next_video_time = boost::none;
1192 _next_video_eyes = boost::none;
1193 _next_audio_time = boost::none;
1196 _black.set_position (time);
1197 _silent.set_position (time);
1199 _last_video.clear ();
1204 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1206 if (!_film->three_d()) {
1207 if (pv->eyes() == Eyes::LEFT) {
1208 /* Use left-eye images for both eyes... */
1209 pv->set_eyes (Eyes::BOTH);
1210 } else if (pv->eyes() == Eyes::RIGHT) {
1211 /* ...and discard the right */
1216 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
1217 player before the video that requires them.
1219 _delay.push_back (make_pair (pv, time));
1221 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1222 _next_video_time = time + one_video_frame();
1224 _next_video_eyes = increment_eyes (pv->eyes());
1226 if (_delay.size() < 3) {
1230 auto to_do = _delay.front();
1232 do_emit_video (to_do.first, to_do.second);
1237 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1239 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1240 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1241 _active_texts[i].clear_before (time);
1245 auto subtitles = open_subtitles_for_frame (time);
1247 pv->set_text (subtitles.get ());
1255 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1257 /* Log if the assert below is about to fail */
1258 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1259 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1262 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1263 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1264 Audio (data, time, _film->audio_frame_rate());
1265 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1270 Player::fill_audio (DCPTimePeriod period)
1272 if (period.from == period.to) {
1276 DCPOMATIC_ASSERT (period.from < period.to);
1278 DCPTime t = period.from;
1279 while (t < period.to) {
1280 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1281 Frame const samples = block.frames_round(_film->audio_frame_rate());
1283 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1284 silence->make_silent ();
1285 emit_audio (silence, t);
1293 Player::one_video_frame () const
1295 return DCPTime::from_frames (1, _film->video_frame_rate ());
1299 pair<shared_ptr<AudioBuffers>, DCPTime>
1300 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1302 auto const discard_time = discard_to - time;
1303 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1304 auto remaining_frames = audio->frames() - discard_frames;
1305 if (remaining_frames <= 0) {
1306 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1308 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1309 return make_pair(cut, time + discard_time);
1314 Player::set_dcp_decode_reduction (optional<int> reduction)
1316 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1318 if (reduction == _dcp_decode_reduction.load()) {
1319 Change(ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1323 _dcp_decode_reduction = reduction;
1326 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1331 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t) const
1333 boost::mutex::scoped_lock lm (_mutex);
1335 for (auto i: _pieces) {
1336 if (i->content == content) {
1337 return content_time_to_dcp (i, t);
1341 /* We couldn't find this content; perhaps things are being changed over */
1346 optional<ContentTime>
1347 Player::dcp_to_content_time (shared_ptr<const Content> content, DCPTime t) const
1349 boost::mutex::scoped_lock lm (_mutex);
1351 for (auto i: _pieces) {
1352 if (i->content == content) {
1353 return dcp_to_content_time (i, t);
1357 /* We couldn't find this content; perhaps things are being changed over */
1362 shared_ptr<const Playlist>
1363 Player::playlist () const
1365 return _playlist ? _playlist : _film->playlist();
1370 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1376 auto piece = weak_piece.lock ();
1377 DCPOMATIC_ASSERT (piece);
1379 auto const vfr = _film->video_frame_rate();
1381 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1382 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1386 Atmos (data.data, dcp_time, data.metadata);