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 boost::mutex::scoped_lock lm (_mutex);
311 for (auto const& i: _delay) {
312 i.first->reset_metadata(_film, _video_container_size);
316 if (type == ChangeType::PENDING) {
317 /* The player content is probably about to change, so we can't carry on
318 until that has happened and we've rebuilt our pieces. Stop pass()
319 and seek() from working until then.
322 } else if (type == ChangeType::DONE) {
323 /* A change in our content has gone through. Re-build our pieces. */
326 } else if (type == ChangeType::CANCELLED) {
331 Change (type, property, frequent);
336 Player::set_video_container_size (dcp::Size s)
338 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
340 if (s == _video_container_size) {
341 Change(ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
345 _video_container_size = s;
347 auto black = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
348 black->make_black ();
349 std::atomic_store(&_black_image, black);
351 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
356 Player::playlist_change (ChangeType type)
358 if (type == ChangeType::DONE) {
361 Change (type, PlayerProperty::PLAYLIST, false);
366 Player::film_change (ChangeType type, Film::Property p)
368 /* Here we should notice Film properties that affect our output, and
369 alert listeners that our output now would be different to how it was
370 last time we were run.
373 if (p == Film::Property::CONTAINER) {
374 Change (type, PlayerProperty::FILM_CONTAINER, false);
375 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
376 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
377 so we need new pieces here.
379 if (type == ChangeType::DONE) {
382 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
383 } else if (p == Film::Property::AUDIO_PROCESSOR) {
384 if (type == ChangeType::DONE && _film->audio_processor ()) {
385 boost::mutex::scoped_lock lm (_mutex);
386 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
388 } else if (p == Film::Property::AUDIO_CHANNELS) {
389 if (type == ChangeType::DONE) {
390 boost::mutex::scoped_lock lm (_mutex);
391 _audio_merger.clear ();
397 shared_ptr<PlayerVideo>
398 Player::black_player_video_frame (Eyes eyes) const
400 auto black = std::atomic_load(&_black_image);
402 return std::make_shared<PlayerVideo> (
403 std::make_shared<const RawImageProxy>(black),
406 _video_container_size,
407 _video_container_size,
410 PresetColourConversion::all().front().conversion,
412 std::weak_ptr<Content>(),
413 boost::optional<Frame>(),
420 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
422 auto s = t - piece->content->position ();
423 s = min (piece->content->length_after_trim(_film), s);
424 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
426 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
427 then convert that ContentTime to frames at the content's rate. However this fails for
428 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
429 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
431 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
433 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
438 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
440 /* See comment in dcp_to_content_video */
441 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
442 return d + piece->content->position();
447 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
449 auto s = t - piece->content->position ();
450 s = min (piece->content->length_after_trim(_film), s);
451 /* See notes in dcp_to_content_video */
452 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
457 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
459 /* See comment in dcp_to_content_video */
460 return DCPTime::from_frames (f, _film->audio_frame_rate())
461 - DCPTime (piece->content->trim_start(), piece->frc)
462 + piece->content->position();
467 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
469 auto s = t - piece->content->position ();
470 s = min (piece->content->length_after_trim(_film), s);
471 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
476 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
478 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
482 vector<shared_ptr<Font>>
483 Player::get_subtitle_fonts ()
485 boost::mutex::scoped_lock lm (_mutex);
487 vector<shared_ptr<Font>> fonts;
488 for (auto piece: _pieces) {
489 for (auto text: piece->content->text) {
490 auto text_fonts = text->fonts();
491 copy (text_fonts.begin(), text_fonts.end(), back_inserter(fonts));
499 /** Set this player never to produce any video data */
501 Player::set_ignore_video ()
503 _ignore_video = true;
509 Player::set_ignore_audio ()
511 _ignore_audio = true;
517 Player::set_ignore_text ()
524 /** Set the player to always burn open texts into the image regardless of the content settings */
526 Player::set_always_burn_open_subtitles ()
528 _always_burn_open_subtitles = true;
532 /** Sets up the player to be faster, possibly at the expense of quality */
542 Player::set_play_referenced ()
544 _play_referenced = true;
552 boost::mutex::scoped_lock lm (_mutex);
555 /* We can't pass in this state */
556 LOG_DEBUG_PLAYER_NC ("Player is suspended");
560 if (_playback_length.load() == DCPTime()) {
561 /* Special; just give one black frame */
562 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
566 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
568 shared_ptr<Piece> earliest_content;
569 optional<DCPTime> earliest_time;
571 for (auto i: _pieces) {
576 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
577 if (t > i->content->end(_film)) {
581 /* Given two choices at the same time, pick the one with texts so we see it before
584 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
586 earliest_content = i;
600 if (earliest_content) {
604 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
605 earliest_time = _black.position ();
609 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
610 earliest_time = _silent.position ();
617 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
618 earliest_content->done = earliest_content->decoder->pass ();
619 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
620 if (dcp && !_play_referenced && dcp->reference_audio()) {
621 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
622 to `hide' the fact that no audio was emitted during the referenced DCP (though
623 we need to behave as though it was).
625 _next_audio_time = dcp->end (_film);
630 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
631 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
632 _black.set_position (_black.position() + one_video_frame());
636 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
637 DCPTimePeriod period (_silent.period_at_position());
638 if (_next_audio_time) {
639 /* Sometimes the thing that happened last finishes fractionally before
640 or after this silence. Bodge the start time of the silence to fix it.
641 I think this is nothing to worry about since we will just add or
642 remove a little silence at the end of some content.
644 int64_t const error = labs(period.from.get() - _next_audio_time->get());
645 /* Let's not worry about less than a frame at 24fps */
646 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
647 if (error >= too_much_error) {
648 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
650 DCPOMATIC_ASSERT (error < too_much_error);
651 period.from = *_next_audio_time;
653 if (period.duration() > one_video_frame()) {
654 period.to = period.from + one_video_frame();
657 _silent.set_position (period.to);
665 /* Emit any audio that is ready */
667 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
668 of our streams, or the position of the _silent. First, though we choose only streams that are less than
669 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
670 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
671 that will never come, causing bugs like #2101.
673 constexpr int ignore_streams_behind = 5;
675 using state_pair = std::pair<AudioStreamPtr, StreamState>;
677 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
678 auto latest_last_push_end = std::max_element(
679 _stream_states.begin(),
680 _stream_states.end(),
681 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
684 if (latest_last_push_end != _stream_states.end()) {
685 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));
688 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
689 std::map<AudioStreamPtr, StreamState> alive_stream_states;
690 for (auto const& i: _stream_states) {
691 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
692 alive_stream_states.insert(i);
694 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
698 auto pull_to = _playback_length.load();
699 for (auto const& i: alive_stream_states) {
700 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
701 pull_to = i.second.last_push_end;
704 if (!_silent.done() && _silent.position() < pull_to) {
705 pull_to = _silent.position();
708 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
709 auto audio = _audio_merger.pull (pull_to);
710 for (auto i = audio.begin(); i != audio.end(); ++i) {
711 if (_next_audio_time && i->second < *_next_audio_time) {
712 /* This new data comes before the last we emitted (or the last seek); discard it */
713 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
718 } else if (_next_audio_time && i->second > *_next_audio_time) {
719 /* There's a gap between this data and the last we emitted; fill with silence */
720 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
723 emit_audio (i->first, i->second);
730 for (auto const& i: _delay) {
731 do_emit_video(i.first, i.second);
734 /* Perhaps we should have Empty entries for both eyes in the 3D case (somehow).
735 * However, if we have L and R video files, and one is shorter than the other,
736 * the fill code in ::video mostly takes care of filling in the gaps.
737 * However, since it fills at the point when it knows there is more video coming
738 * at time t (so it should fill any gap up to t) it can't do anything right at the
739 * end. This is particularly bad news if the last frame emitted is a LEFT
740 * eye, as the MXF writer will complain about the 3D sequence being wrong.
741 * Here's a hack to workaround that particular case.
743 if (_next_video_eyes && _next_video_time && *_next_video_eyes == Eyes::RIGHT) {
744 do_emit_video (black_player_video_frame(Eyes::RIGHT), *_next_video_time);
752 /** @return Open subtitles for the frame at the given time, converted to images */
753 optional<PositionImage>
754 Player::open_subtitles_for_frame (DCPTime time) const
756 list<PositionImage> captions;
757 int const vfr = _film->video_frame_rate();
761 _active_texts[static_cast<int>(TextType::OPEN_SUBTITLE)].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
764 /* Bitmap subtitles */
765 for (auto i: j.bitmap) {
770 /* i.image will already have been scaled to fit _video_container_size */
771 dcp::Size scaled_size (i.rectangle.width * _video_container_size.load().width, i.rectangle.height * _video_container_size.load().height);
777 lrint(_video_container_size.load().width * i.rectangle.x),
778 lrint(_video_container_size.load().height * i.rectangle.y)
784 /* String subtitles (rendered to an image) */
785 if (!j.string.empty()) {
786 auto s = render_text(j.string, _video_container_size, time, vfr);
787 copy (s.begin(), s.end(), back_inserter (captions));
791 if (captions.empty()) {
795 return merge (captions, _subtitle_alignment);
800 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
806 auto piece = weak_piece.lock ();
811 if (!piece->content->video->use()) {
815 FrameRateChange frc (_film, piece->content);
816 if (frc.skip && (video.frame % 2) == 1) {
820 /* Time of the first frame we will emit */
821 DCPTime const time = content_video_to_dcp (piece, video.frame);
822 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
824 /* Discard if it's before the content's period or the last accurate seek. We can't discard
825 if it's after the content's period here as in that case we still need to fill any gap between
826 `now' and the end of the content's period.
828 if (time < piece->content->position() || (_next_video_time && time < *_next_video_time)) {
832 if (piece->ignore_video && piece->ignore_video->contains(time)) {
836 /* Fill gaps that we discover now that we have some video which needs to be emitted.
837 This is where we need to fill to.
839 DCPTime fill_to = min (time, piece->content->end(_film));
841 if (_next_video_time) {
842 DCPTime fill_from = max (*_next_video_time, piece->content->position());
844 /* Fill if we have more than half a frame to do */
845 if ((fill_to - fill_from) > one_video_frame() / 2) {
846 auto last = _last_video.find (weak_piece);
847 if (_film->three_d()) {
848 auto fill_to_eyes = video.eyes;
849 if (fill_to_eyes == Eyes::BOTH) {
850 fill_to_eyes = Eyes::LEFT;
852 if (fill_to == piece->content->end(_film)) {
853 /* Don't fill after the end of the content */
854 fill_to_eyes = Eyes::LEFT;
857 auto eyes = _next_video_eyes.get_value_or(Eyes::LEFT);
858 if (eyes == Eyes::BOTH) {
861 while (j < fill_to || eyes != fill_to_eyes) {
862 if (last != _last_video.end()) {
863 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
864 auto copy = last->second->shallow_copy();
865 copy->set_eyes (eyes);
866 emit_video (copy, j);
868 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
869 emit_video (black_player_video_frame(eyes), j);
871 if (eyes == Eyes::RIGHT) {
872 j += one_video_frame();
874 eyes = increment_eyes (eyes);
877 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
878 if (last != _last_video.end()) {
879 emit_video (last->second, j);
881 emit_video (black_player_video_frame(Eyes::BOTH), j);
888 auto const content_video = piece->content->video;
890 _last_video[weak_piece] = std::make_shared<PlayerVideo>(
892 content_video->actual_crop(),
893 content_video->fade (_film, video.frame),
895 content_video->scaled_size(_film->frame_size()),
896 _video_container_size,
898 content_video->pixel_quanta()
900 _video_container_size,
903 content_video->colour_conversion(),
904 content_video->range(),
911 for (int i = 0; i < frc.repeat; ++i) {
912 if (t < piece->content->end(_film)) {
913 emit_video (_last_video[weak_piece], t);
915 t += one_video_frame ();
921 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
927 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
929 auto piece = weak_piece.lock ();
934 auto content = piece->content->audio;
935 DCPOMATIC_ASSERT (content);
937 int const rfr = content->resampled_frame_rate (_film);
939 /* Compute time in the DCP */
940 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
941 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
943 /* And the end of this block in the DCP */
944 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
946 /* Remove anything that comes before the start or after the end of the content */
947 if (time < piece->content->position()) {
948 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
950 /* This audio is entirely discarded */
953 content_audio.audio = cut.first;
955 } else if (time > piece->content->end(_film)) {
958 } else if (end > piece->content->end(_film)) {
959 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
960 if (remaining_frames == 0) {
963 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
966 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
970 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
971 if (content->gain() != 0 || !fade_coeffs.empty()) {
972 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
973 if (!fade_coeffs.empty()) {
974 /* Apply both fade and gain */
975 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
976 auto const channels = gain_buffers->channels();
977 auto const frames = fade_coeffs.size();
978 auto data = gain_buffers->data();
979 auto const gain = db_to_linear (content->gain());
980 for (auto channel = 0; channel < channels; ++channel) {
981 for (auto frame = 0U; frame < frames; ++frame) {
982 data[channel][frame] *= gain * fade_coeffs[frame];
986 /* Just apply gain */
987 gain_buffers->apply_gain (content->gain());
989 content_audio.audio = gain_buffers;
994 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
998 if (_audio_processor) {
999 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1004 _audio_merger.push (content_audio.audio, time);
1005 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1006 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1011 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1017 auto piece = weak_piece.lock ();
1018 auto content = weak_content.lock ();
1019 if (!piece || !content) {
1024 for (auto& sub: subtitle.subs)
1026 /* Apply content's subtitle offsets */
1027 sub.rectangle.x += content->x_offset ();
1028 sub.rectangle.y += content->y_offset ();
1030 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1031 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1032 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1034 /* Apply content's subtitle scale */
1035 sub.rectangle.width *= content->x_scale ();
1036 sub.rectangle.height *= content->y_scale ();
1038 auto image = sub.image;
1040 /* We will scale the subtitle up to fit _video_container_size */
1041 int const width = sub.rectangle.width * _video_container_size.load().width;
1042 int const height = sub.rectangle.height * _video_container_size.load().height;
1043 if (width == 0 || height == 0) {
1047 dcp::Size scaled_size (width, height);
1048 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1051 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1052 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1057 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1063 auto piece = weak_piece.lock ();
1064 auto content = weak_content.lock ();
1065 if (!piece || !content) {
1070 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1072 if (from > piece->content->end(_film)) {
1076 for (auto s: subtitle.subs) {
1077 s.set_h_position (s.h_position() + content->x_offset());
1078 s.set_v_position (s.v_position() + content->y_offset());
1079 float const xs = content->x_scale();
1080 float const ys = content->y_scale();
1081 float size = s.size();
1083 /* Adjust size to express the common part of the scaling;
1084 e.g. if xs = ys = 0.5 we scale size by 2.
1086 if (xs > 1e-5 && ys > 1e-5) {
1087 size *= 1 / min (1 / xs, 1 / ys);
1091 /* Then express aspect ratio changes */
1092 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1093 s.set_aspect_adjust (xs / ys);
1096 s.set_in (dcp::Time(from.seconds(), 1000));
1097 ps.string.push_back (s);
1100 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1105 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1111 auto content = weak_content.lock ();
1116 if (!_active_texts[static_cast<int>(content->type())].have(weak_content)) {
1120 auto piece = weak_piece.lock ();
1125 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1127 if (dcp_to > piece->content->end(_film)) {
1131 auto from = _active_texts[static_cast<int>(content->type())].add_to(weak_content, dcp_to);
1133 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1134 if (content->use() && !always && !content->burn()) {
1135 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1141 Player::seek (DCPTime time, bool accurate)
1143 boost::mutex::scoped_lock lm (_mutex);
1144 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1147 /* We can't seek in this state */
1152 _shuffler->clear ();
1157 if (_audio_processor) {
1158 _audio_processor->flush ();
1161 _audio_merger.clear ();
1162 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1163 _active_texts[i].clear ();
1166 for (auto i: _pieces) {
1167 if (time < i->content->position()) {
1168 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1169 we must seek this (following) content accurately, otherwise when we come to the end of the current
1170 content we may not start right at the beginning of the next, causing a gap (if the next content has
1171 been trimmed to a point between keyframes, or something).
1173 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1175 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1176 /* During; seek to position */
1177 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1180 /* After; this piece is done */
1186 _next_video_time = time;
1187 _next_video_eyes = Eyes::LEFT;
1188 _next_audio_time = time;
1190 _next_video_time = boost::none;
1191 _next_video_eyes = boost::none;
1192 _next_audio_time = boost::none;
1195 _black.set_position (time);
1196 _silent.set_position (time);
1198 _last_video.clear ();
1203 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1205 if (!_film->three_d()) {
1206 if (pv->eyes() == Eyes::LEFT) {
1207 /* Use left-eye images for both eyes... */
1208 pv->set_eyes (Eyes::BOTH);
1209 } else if (pv->eyes() == Eyes::RIGHT) {
1210 /* ...and discard the right */
1215 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
1216 player before the video that requires them.
1218 _delay.push_back (make_pair (pv, time));
1220 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1221 _next_video_time = time + one_video_frame();
1223 _next_video_eyes = increment_eyes (pv->eyes());
1225 if (_delay.size() < 3) {
1229 auto to_do = _delay.front();
1231 do_emit_video (to_do.first, to_do.second);
1236 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1238 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1239 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1240 _active_texts[i].clear_before (time);
1244 auto subtitles = open_subtitles_for_frame (time);
1246 pv->set_text (subtitles.get ());
1254 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1256 /* Log if the assert below is about to fail */
1257 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1258 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1261 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1262 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1263 Audio (data, time, _film->audio_frame_rate());
1264 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1269 Player::fill_audio (DCPTimePeriod period)
1271 if (period.from == period.to) {
1275 DCPOMATIC_ASSERT (period.from < period.to);
1277 DCPTime t = period.from;
1278 while (t < period.to) {
1279 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1280 Frame const samples = block.frames_round(_film->audio_frame_rate());
1282 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1283 silence->make_silent ();
1284 emit_audio (silence, t);
1292 Player::one_video_frame () const
1294 return DCPTime::from_frames (1, _film->video_frame_rate ());
1298 pair<shared_ptr<AudioBuffers>, DCPTime>
1299 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1301 auto const discard_time = discard_to - time;
1302 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1303 auto remaining_frames = audio->frames() - discard_frames;
1304 if (remaining_frames <= 0) {
1305 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1307 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1308 return make_pair(cut, time + discard_time);
1313 Player::set_dcp_decode_reduction (optional<int> reduction)
1315 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1317 if (reduction == _dcp_decode_reduction.load()) {
1318 Change(ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1322 _dcp_decode_reduction = reduction;
1325 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1330 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t) const
1332 boost::mutex::scoped_lock lm (_mutex);
1334 for (auto i: _pieces) {
1335 if (i->content == content) {
1336 return content_time_to_dcp (i, t);
1340 /* We couldn't find this content; perhaps things are being changed over */
1345 optional<ContentTime>
1346 Player::dcp_to_content_time (shared_ptr<const Content> content, DCPTime t) const
1348 boost::mutex::scoped_lock lm (_mutex);
1350 for (auto i: _pieces) {
1351 if (i->content == content) {
1352 return dcp_to_content_time (i, t);
1356 /* We couldn't find this content; perhaps things are being changed over */
1361 shared_ptr<const Playlist>
1362 Player::playlist () const
1364 return _playlist ? _playlist : _film->playlist();
1369 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1375 auto piece = weak_piece.lock ();
1376 DCPOMATIC_ASSERT (piece);
1378 auto const vfr = _film->video_frame_rate();
1380 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1381 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1385 Atmos (data.data, dcp_time, data.metadata);