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 "referenced_reel_asset.h"
51 #include "render_text.h"
53 #include "text_content.h"
54 #include "text_decoder.h"
56 #include "video_decoder.h"
58 #include <dcp/reel_closed_caption_asset.h>
59 #include <dcp/reel_picture_asset.h>
60 #include <dcp/reel_sound_asset.h>
61 #include <dcp/reel_subtitle_asset.h>
71 using std::dynamic_pointer_cast;
74 using std::make_shared;
75 using std::make_shared;
80 using std::shared_ptr;
83 using boost::optional;
84 using boost::scoped_ptr;
85 #if BOOST_VERSION >= 106100
86 using namespace boost::placeholders;
88 using namespace dcpomatic;
91 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
92 int const PlayerProperty::PLAYLIST = 701;
93 int const PlayerProperty::FILM_CONTAINER = 702;
94 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
95 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
96 int const PlayerProperty::PLAYBACK_LENGTH = 705;
99 Player::Player (shared_ptr<const Film> film, Image::Alignment subtitle_alignment)
102 , _tolerant (film->tolerant())
103 , _audio_merger (_film->audio_frame_rate())
104 , _subtitle_alignment (subtitle_alignment)
110 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
112 , _playlist (playlist_)
114 , _tolerant (film->tolerant())
115 , _audio_merger (_film->audio_frame_rate())
124 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
125 /* The butler must hear about this first, so since we are proxying this through to the butler we must
128 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
129 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
130 set_video_container_size (_film->frame_size ());
132 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
135 seek (DCPTime (), true);
140 Player::setup_pieces ()
142 boost::mutex::scoped_lock lm (_mutex);
143 setup_pieces_unlocked ();
148 have_video (shared_ptr<const Content> content)
150 return static_cast<bool>(content->video) && content->video->use() && content->can_be_played();
155 have_audio (shared_ptr<const Content> content)
157 return static_cast<bool>(content->audio);
162 Player::setup_pieces_unlocked ()
164 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
166 auto old_pieces = _pieces;
169 _shuffler.reset (new Shuffler());
170 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
172 for (auto i: playlist()->content()) {
174 if (!i->paths_valid ()) {
178 if (_ignore_video && _ignore_audio && i->text.empty()) {
179 /* We're only interested in text and this content has none */
183 shared_ptr<Decoder> old_decoder;
184 for (auto j: old_pieces) {
185 if (j->content == i) {
186 old_decoder = j->decoder;
191 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
192 DCPOMATIC_ASSERT (decoder);
194 FrameRateChange frc (_film, i);
196 if (decoder->video && _ignore_video) {
197 decoder->video->set_ignore (true);
200 if (decoder->audio && _ignore_audio) {
201 decoder->audio->set_ignore (true);
205 for (auto i: decoder->text) {
206 i->set_ignore (true);
210 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
212 dcp->set_decode_referenced (_play_referenced);
213 if (_play_referenced) {
214 dcp->set_forced_reduction (_dcp_decode_reduction);
218 auto piece = make_shared<Piece>(i, decoder, frc);
219 _pieces.push_back (piece);
221 if (decoder->video) {
222 if (i->video->frame_type() == VideoFrameType::THREE_D_LEFT || i->video->frame_type() == VideoFrameType::THREE_D_RIGHT) {
223 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
224 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler.get(), weak_ptr<Piece>(piece), _1));
226 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
230 if (decoder->audio) {
231 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
234 auto j = decoder->text.begin();
236 while (j != decoder->text.end()) {
237 (*j)->BitmapStart.connect (
238 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
240 (*j)->PlainStart.connect (
241 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
244 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
250 if (decoder->atmos) {
251 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
255 _stream_states.clear ();
256 for (auto i: _pieces) {
257 if (i->content->audio) {
258 for (auto j: i->content->audio->streams()) {
259 _stream_states[j] = StreamState (i, i->content->position ());
264 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
265 if (auto video = (*i)->content->video) {
266 if (video->use() && video->frame_type() != VideoFrameType::THREE_D_LEFT && video->frame_type() != VideoFrameType::THREE_D_RIGHT) {
267 /* Look for content later in the content list with in-use video that overlaps this */
268 auto period = DCPTimePeriod((*i)->content->position(), (*i)->content->end(_film));
271 for (; j != _pieces.end(); ++j) {
272 if ((*j)->content->video && (*j)->content->video->use()) {
273 (*i)->ignore_video = DCPTimePeriod((*j)->content->position(), (*j)->content->end(_film)).overlap(period);
280 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
281 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
283 _next_video_time = boost::none;
284 _next_video_eyes = Eyes::BOTH;
285 _next_audio_time = boost::none;
290 Player::playlist_content_change (ChangeType type, int property, bool frequent)
292 if (property == VideoContentProperty::CROP) {
293 if (type == ChangeType::DONE) {
294 auto const vcs = video_container_size();
295 boost::mutex::scoped_lock lm (_mutex);
296 for (auto const& i: _delay) {
297 i.first->reset_metadata (_film, vcs);
301 if (type == ChangeType::PENDING) {
302 /* The player content is probably about to change, so we can't carry on
303 until that has happened and we've rebuilt our pieces. Stop pass()
304 and seek() from working until then.
307 } else if (type == ChangeType::DONE) {
308 /* A change in our content has gone through. Re-build our pieces. */
311 } else if (type == ChangeType::CANCELLED) {
316 Change (type, property, frequent);
321 Player::set_video_container_size (dcp::Size s)
323 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
326 boost::mutex::scoped_lock lm (_mutex);
328 if (s == _video_container_size) {
330 Change (ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
334 _video_container_size = s;
336 _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
337 _black_image->make_black ();
340 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
345 Player::playlist_change (ChangeType type)
347 if (type == ChangeType::DONE) {
350 Change (type, PlayerProperty::PLAYLIST, false);
355 Player::film_change (ChangeType type, Film::Property p)
357 /* Here we should notice Film properties that affect our output, and
358 alert listeners that our output now would be different to how it was
359 last time we were run.
362 if (p == Film::Property::CONTAINER) {
363 Change (type, PlayerProperty::FILM_CONTAINER, false);
364 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
365 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
366 so we need new pieces here.
368 if (type == ChangeType::DONE) {
371 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
372 } else if (p == Film::Property::AUDIO_PROCESSOR) {
373 if (type == ChangeType::DONE && _film->audio_processor ()) {
374 boost::mutex::scoped_lock lm (_mutex);
375 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
377 } else if (p == Film::Property::AUDIO_CHANNELS) {
378 if (type == ChangeType::DONE) {
379 boost::mutex::scoped_lock lm (_mutex);
380 _audio_merger.clear ();
386 shared_ptr<PlayerVideo>
387 Player::black_player_video_frame (Eyes eyes) const
389 return std::make_shared<PlayerVideo> (
390 std::make_shared<const RawImageProxy>(_black_image),
393 _video_container_size,
394 _video_container_size,
397 PresetColourConversion::all().front().conversion,
399 std::weak_ptr<Content>(),
400 boost::optional<Frame>(),
407 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
409 auto s = t - piece->content->position ();
410 s = min (piece->content->length_after_trim(_film), s);
411 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
413 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
414 then convert that ContentTime to frames at the content's rate. However this fails for
415 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
416 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
418 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
420 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
425 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
427 /* See comment in dcp_to_content_video */
428 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
429 return d + piece->content->position();
434 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
436 auto s = t - piece->content->position ();
437 s = min (piece->content->length_after_trim(_film), s);
438 /* See notes in dcp_to_content_video */
439 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
444 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
446 /* See comment in dcp_to_content_video */
447 return DCPTime::from_frames (f, _film->audio_frame_rate())
448 - DCPTime (piece->content->trim_start(), piece->frc)
449 + piece->content->position();
454 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
456 auto s = t - piece->content->position ();
457 s = min (piece->content->length_after_trim(_film), s);
458 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
463 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
465 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
470 Player::get_subtitle_fonts ()
472 boost::mutex::scoped_lock lm (_mutex);
474 vector<FontData> fonts;
475 for (auto i: _pieces) {
476 /* XXX: things may go wrong if there are duplicate font IDs
477 with different font files.
479 auto f = i->decoder->fonts ();
480 copy (f.begin(), f.end(), back_inserter(fonts));
487 /** Set this player never to produce any video data */
489 Player::set_ignore_video ()
491 boost::mutex::scoped_lock lm (_mutex);
492 _ignore_video = true;
493 setup_pieces_unlocked ();
498 Player::set_ignore_audio ()
500 boost::mutex::scoped_lock lm (_mutex);
501 _ignore_audio = true;
502 setup_pieces_unlocked ();
507 Player::set_ignore_text ()
509 boost::mutex::scoped_lock lm (_mutex);
511 setup_pieces_unlocked ();
515 /** Set the player to always burn open texts into the image regardless of the content settings */
517 Player::set_always_burn_open_subtitles ()
519 boost::mutex::scoped_lock lm (_mutex);
520 _always_burn_open_subtitles = true;
524 /** Sets up the player to be faster, possibly at the expense of quality */
528 boost::mutex::scoped_lock lm (_mutex);
530 setup_pieces_unlocked ();
535 Player::set_play_referenced ()
537 boost::mutex::scoped_lock lm (_mutex);
538 _play_referenced = true;
539 setup_pieces_unlocked ();
544 maybe_add_asset (list<ReferencedReelAsset>& a, shared_ptr<dcp::ReelAsset> r, Frame reel_trim_start, Frame reel_trim_end, DCPTime from, int const ffr)
546 DCPOMATIC_ASSERT (r);
547 r->set_entry_point (r->entry_point().get_value_or(0) + reel_trim_start);
548 r->set_duration (r->actual_duration() - reel_trim_start - reel_trim_end);
549 if (r->actual_duration() > 0) {
551 ReferencedReelAsset(r, DCPTimePeriod(from, from + DCPTime::from_frames(r->actual_duration(), ffr)))
557 list<ReferencedReelAsset>
558 Player::get_reel_assets ()
560 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
562 list<ReferencedReelAsset> reel_assets;
564 for (auto content: playlist()->content()) {
565 auto dcp = dynamic_pointer_cast<DCPContent>(content);
570 if (!dcp->reference_video() && !dcp->reference_audio() && !dcp->reference_text(TextType::OPEN_SUBTITLE) && !dcp->reference_text(TextType::CLOSED_CAPTION)) {
574 scoped_ptr<DCPDecoder> decoder;
576 decoder.reset (new DCPDecoder(_film, dcp, false, false, shared_ptr<DCPDecoder>()));
581 auto const frame_rate = _film->video_frame_rate();
582 DCPOMATIC_ASSERT (dcp->video_frame_rate());
583 /* We should only be referencing if the DCP rate is the same as the film rate */
584 DCPOMATIC_ASSERT (std::round(dcp->video_frame_rate().get()) == frame_rate);
586 Frame const trim_start = dcp->trim_start().frames_round(frame_rate);
587 Frame const trim_end = dcp->trim_end().frames_round(frame_rate);
589 /* position in the asset from the start */
590 int64_t offset_from_start = 0;
591 /* position i the asset from the end */
592 int64_t offset_from_end = 0;
593 for (auto reel: decoder->reels()) {
594 /* Assume that main picture duration is the length of the reel */
595 offset_from_end += reel->main_picture()->actual_duration();
598 for (auto reel: decoder->reels()) {
600 /* Assume that main picture duration is the length of the reel */
601 int64_t const reel_duration = reel->main_picture()->actual_duration();
603 /* See doc/design/trim_reels.svg */
604 Frame const reel_trim_start = min(reel_duration, max(int64_t(0), trim_start - offset_from_start));
605 Frame const reel_trim_end = min(reel_duration, max(int64_t(0), reel_duration - (offset_from_end - trim_end)));
607 auto const from = max(DCPTime(), content->position() + DCPTime::from_frames(offset_from_start, frame_rate) - DCPTime::from_frames(trim_start, frame_rate));
608 if (dcp->reference_video()) {
609 maybe_add_asset (reel_assets, reel->main_picture(), reel_trim_start, reel_trim_end, from, frame_rate);
612 if (dcp->reference_audio()) {
613 maybe_add_asset (reel_assets, reel->main_sound(), reel_trim_start, reel_trim_end, from, frame_rate);
616 if (dcp->reference_text(TextType::OPEN_SUBTITLE)) {
617 maybe_add_asset (reel_assets, reel->main_subtitle(), reel_trim_start, reel_trim_end, from, frame_rate);
620 if (dcp->reference_text(TextType::CLOSED_CAPTION)) {
621 for (auto caption: reel->closed_captions()) {
622 maybe_add_asset (reel_assets, caption, reel_trim_start, reel_trim_end, from, frame_rate);
626 offset_from_start += reel_duration;
627 offset_from_end -= reel_duration;
638 boost::mutex::scoped_lock lm (_mutex);
641 /* We can't pass in this state */
642 LOG_DEBUG_PLAYER_NC ("Player is suspended");
646 if (_playback_length == DCPTime()) {
647 /* Special; just give one black frame */
648 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
652 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
654 shared_ptr<Piece> earliest_content;
655 optional<DCPTime> earliest_time;
657 for (auto i: _pieces) {
662 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
663 if (t > i->content->end(_film)) {
667 /* Given two choices at the same time, pick the one with texts so we see it before
670 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
672 earliest_content = i;
686 if (earliest_content) {
690 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
691 earliest_time = _black.position ();
695 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
696 earliest_time = _silent.position ();
703 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
704 earliest_content->done = earliest_content->decoder->pass ();
705 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
706 if (dcp && !_play_referenced && dcp->reference_audio()) {
707 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
708 to `hide' the fact that no audio was emitted during the referenced DCP (though
709 we need to behave as though it was).
711 _next_audio_time = dcp->end (_film);
716 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
717 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
718 _black.set_position (_black.position() + one_video_frame());
722 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
723 DCPTimePeriod period (_silent.period_at_position());
724 if (_next_audio_time) {
725 /* Sometimes the thing that happened last finishes fractionally before
726 or after this silence. Bodge the start time of the silence to fix it.
727 I think this is nothing to worry about since we will just add or
728 remove a little silence at the end of some content.
730 int64_t const error = labs(period.from.get() - _next_audio_time->get());
731 /* Let's not worry about less than a frame at 24fps */
732 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
733 if (error >= too_much_error) {
734 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
736 DCPOMATIC_ASSERT (error < too_much_error);
737 period.from = *_next_audio_time;
739 if (period.duration() > one_video_frame()) {
740 period.to = period.from + one_video_frame();
743 _silent.set_position (period.to);
751 /* Emit any audio that is ready */
753 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
754 of our streams, or the position of the _silent. First, though we choose only streams that are less than
755 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
756 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
757 that will never come, causing bugs like #2101.
759 constexpr int ignore_streams_behind = 5;
761 using state_pair = std::pair<AudioStreamPtr, StreamState>;
763 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
764 auto latest_last_push_end = std::max_element(
765 _stream_states.begin(),
766 _stream_states.end(),
767 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
770 if (latest_last_push_end != _stream_states.end()) {
771 LOG_DEBUG_PLAYER("Leading 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));
774 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
775 std::map<AudioStreamPtr, StreamState> alive_stream_states;
776 for (auto const& i: _stream_states) {
777 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
778 alive_stream_states.insert(i);
780 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
784 auto pull_to = _playback_length;
785 for (auto const& i: alive_stream_states) {
786 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
787 pull_to = i.second.last_push_end;
790 if (!_silent.done() && _silent.position() < pull_to) {
791 pull_to = _silent.position();
794 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
795 auto audio = _audio_merger.pull (pull_to);
796 for (auto i = audio.begin(); i != audio.end(); ++i) {
797 if (_next_audio_time && i->second < *_next_audio_time) {
798 /* This new data comes before the last we emitted (or the last seek); discard it */
799 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
804 } else if (_next_audio_time && i->second > *_next_audio_time) {
805 /* There's a gap between this data and the last we emitted; fill with silence */
806 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
809 emit_audio (i->first, i->second);
814 for (auto const& i: _delay) {
815 do_emit_video(i.first, i.second);
818 /* Perhaps we should have Empty entries for both eyes in the 3D case (somehow).
819 * However, if we have L and R video files, and one is shorter than the other,
820 * the fill code in ::video mostly takes care of filling in the gaps.
821 * However, since it fills at the point when it knows there is more video coming
822 * at time t (so it should fill any gap up to t) it can't do anything right at the
823 * end. This is particularly bad news if the last frame emitted is a LEFT
824 * eye, as the MXF writer will complain about the 3D sequence being wrong.
825 * Here's a hack to workaround that particular case.
827 if (_next_video_eyes && _next_video_time && *_next_video_eyes == Eyes::RIGHT) {
828 do_emit_video (black_player_video_frame(Eyes::RIGHT), *_next_video_time);
836 /** @return Open subtitles for the frame at the given time, converted to images */
837 optional<PositionImage>
838 Player::open_subtitles_for_frame (DCPTime time) const
840 list<PositionImage> captions;
841 int const vfr = _film->video_frame_rate();
845 _active_texts[static_cast<int>(TextType::OPEN_SUBTITLE)].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
848 /* Bitmap subtitles */
849 for (auto i: j.bitmap) {
854 /* i.image will already have been scaled to fit _video_container_size */
855 dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height);
861 lrint(_video_container_size.width * i.rectangle.x),
862 lrint(_video_container_size.height * i.rectangle.y)
868 /* String subtitles (rendered to an image) */
869 if (!j.string.empty()) {
870 auto s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
871 copy (s.begin(), s.end(), back_inserter (captions));
875 if (captions.empty()) {
879 return merge (captions, _subtitle_alignment);
884 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
890 auto piece = weak_piece.lock ();
895 if (!piece->content->video->use()) {
899 FrameRateChange frc (_film, piece->content);
900 if (frc.skip && (video.frame % 2) == 1) {
904 /* Time of the first frame we will emit */
905 DCPTime const time = content_video_to_dcp (piece, video.frame);
906 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
908 /* Discard if it's before the content's period or the last accurate seek. We can't discard
909 if it's after the content's period here as in that case we still need to fill any gap between
910 `now' and the end of the content's period.
912 if (time < piece->content->position() || (_next_video_time && time < *_next_video_time)) {
916 if (piece->ignore_video && piece->ignore_video->contains(time)) {
920 /* Fill gaps that we discover now that we have some video which needs to be emitted.
921 This is where we need to fill to.
923 DCPTime fill_to = min (time, piece->content->end(_film));
925 if (_next_video_time) {
926 DCPTime fill_from = max (*_next_video_time, piece->content->position());
928 /* Fill if we have more than half a frame to do */
929 if ((fill_to - fill_from) > one_video_frame() / 2) {
930 auto last = _last_video.find (weak_piece);
931 if (_film->three_d()) {
932 auto fill_to_eyes = video.eyes;
933 if (fill_to_eyes == Eyes::BOTH) {
934 fill_to_eyes = Eyes::LEFT;
936 if (fill_to == piece->content->end(_film)) {
937 /* Don't fill after the end of the content */
938 fill_to_eyes = Eyes::LEFT;
941 auto eyes = _next_video_eyes.get_value_or(Eyes::LEFT);
942 if (eyes == Eyes::BOTH) {
945 while (j < fill_to || eyes != fill_to_eyes) {
946 if (last != _last_video.end()) {
947 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
948 auto copy = last->second->shallow_copy();
949 copy->set_eyes (eyes);
950 emit_video (copy, j);
952 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
953 emit_video (black_player_video_frame(eyes), j);
955 if (eyes == Eyes::RIGHT) {
956 j += one_video_frame();
958 eyes = increment_eyes (eyes);
961 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
962 if (last != _last_video.end()) {
963 emit_video (last->second, j);
965 emit_video (black_player_video_frame(Eyes::BOTH), j);
972 auto const content_video = piece->content->video;
974 _last_video[weak_piece] = std::make_shared<PlayerVideo>(
976 content_video->actual_crop(),
977 content_video->fade (_film, video.frame),
979 content_video->scaled_size(_film->frame_size()),
980 _video_container_size,
982 content_video->pixel_quanta()
984 _video_container_size,
987 content_video->colour_conversion(),
988 content_video->range(),
995 for (int i = 0; i < frc.repeat; ++i) {
996 if (t < piece->content->end(_film)) {
997 emit_video (_last_video[weak_piece], t);
999 t += one_video_frame ();
1005 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
1011 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
1013 auto piece = weak_piece.lock ();
1018 auto content = piece->content->audio;
1019 DCPOMATIC_ASSERT (content);
1021 int const rfr = content->resampled_frame_rate (_film);
1023 /* Compute time in the DCP */
1024 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
1025 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
1027 /* And the end of this block in the DCP */
1028 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
1030 /* Remove anything that comes before the start or after the end of the content */
1031 if (time < piece->content->position()) {
1032 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
1034 /* This audio is entirely discarded */
1037 content_audio.audio = cut.first;
1039 } else if (time > piece->content->end(_film)) {
1040 /* Discard it all */
1042 } else if (end > piece->content->end(_film)) {
1043 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
1044 if (remaining_frames == 0) {
1047 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
1050 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
1054 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
1055 if (content->gain() != 0 || !fade_coeffs.empty()) {
1056 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
1057 if (!fade_coeffs.empty()) {
1058 /* Apply both fade and gain */
1059 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
1060 auto const channels = gain_buffers->channels();
1061 auto const frames = fade_coeffs.size();
1062 auto data = gain_buffers->data();
1063 auto const gain = db_to_linear (content->gain());
1064 for (auto channel = 0; channel < channels; ++channel) {
1065 for (auto frame = 0U; frame < frames; ++frame) {
1066 data[channel][frame] *= gain * fade_coeffs[frame];
1070 /* Just apply gain */
1071 gain_buffers->apply_gain (content->gain());
1073 content_audio.audio = gain_buffers;
1078 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
1082 if (_audio_processor) {
1083 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1088 _audio_merger.push (content_audio.audio, time);
1089 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1090 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1095 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1101 auto piece = weak_piece.lock ();
1102 auto content = weak_content.lock ();
1103 if (!piece || !content) {
1108 for (auto& sub: subtitle.subs)
1110 /* Apply content's subtitle offsets */
1111 sub.rectangle.x += content->x_offset ();
1112 sub.rectangle.y += content->y_offset ();
1114 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1115 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1116 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1118 /* Apply content's subtitle scale */
1119 sub.rectangle.width *= content->x_scale ();
1120 sub.rectangle.height *= content->y_scale ();
1122 auto image = sub.image;
1124 /* We will scale the subtitle up to fit _video_container_size */
1125 int const width = sub.rectangle.width * _video_container_size.width;
1126 int const height = sub.rectangle.height * _video_container_size.height;
1127 if (width == 0 || height == 0) {
1131 dcp::Size scaled_size (width, height);
1132 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1135 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1136 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1141 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1147 auto piece = weak_piece.lock ();
1148 auto content = weak_content.lock ();
1149 if (!piece || !content) {
1154 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1156 if (from > piece->content->end(_film)) {
1160 for (auto s: subtitle.subs) {
1161 s.set_h_position (s.h_position() + content->x_offset());
1162 s.set_v_position (s.v_position() + content->y_offset());
1163 float const xs = content->x_scale();
1164 float const ys = content->y_scale();
1165 float size = s.size();
1167 /* Adjust size to express the common part of the scaling;
1168 e.g. if xs = ys = 0.5 we scale size by 2.
1170 if (xs > 1e-5 && ys > 1e-5) {
1171 size *= 1 / min (1 / xs, 1 / ys);
1175 /* Then express aspect ratio changes */
1176 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1177 s.set_aspect_adjust (xs / ys);
1180 s.set_in (dcp::Time(from.seconds(), 1000));
1181 ps.string.push_back (StringText (s, content->outline_width()));
1182 ps.add_fonts (content->fonts ());
1185 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1190 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1196 auto content = weak_content.lock ();
1201 if (!_active_texts[static_cast<int>(content->type())].have(weak_content)) {
1205 auto piece = weak_piece.lock ();
1210 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1212 if (dcp_to > piece->content->end(_film)) {
1216 auto from = _active_texts[static_cast<int>(content->type())].add_to(weak_content, dcp_to);
1218 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1219 if (content->use() && !always && !content->burn()) {
1220 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1226 Player::seek (DCPTime time, bool accurate)
1228 boost::mutex::scoped_lock lm (_mutex);
1229 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1232 /* We can't seek in this state */
1237 _shuffler->clear ();
1242 if (_audio_processor) {
1243 _audio_processor->flush ();
1246 _audio_merger.clear ();
1247 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1248 _active_texts[i].clear ();
1251 for (auto i: _pieces) {
1252 if (time < i->content->position()) {
1253 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1254 we must seek this (following) content accurately, otherwise when we come to the end of the current
1255 content we may not start right at the beginning of the next, causing a gap (if the next content has
1256 been trimmed to a point between keyframes, or something).
1258 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1260 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1261 /* During; seek to position */
1262 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1265 /* After; this piece is done */
1271 _next_video_time = time;
1272 _next_video_eyes = Eyes::LEFT;
1273 _next_audio_time = time;
1275 _next_video_time = boost::none;
1276 _next_video_eyes = boost::none;
1277 _next_audio_time = boost::none;
1280 _black.set_position (time);
1281 _silent.set_position (time);
1283 _last_video.clear ();
1288 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1290 if (!_film->three_d()) {
1291 if (pv->eyes() == Eyes::LEFT) {
1292 /* Use left-eye images for both eyes... */
1293 pv->set_eyes (Eyes::BOTH);
1294 } else if (pv->eyes() == Eyes::RIGHT) {
1295 /* ...and discard the right */
1300 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
1301 player before the video that requires them.
1303 _delay.push_back (make_pair (pv, time));
1305 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1306 _next_video_time = time + one_video_frame();
1308 _next_video_eyes = increment_eyes (pv->eyes());
1310 if (_delay.size() < 3) {
1314 auto to_do = _delay.front();
1316 do_emit_video (to_do.first, to_do.second);
1321 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1323 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1324 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1325 _active_texts[i].clear_before (time);
1329 auto subtitles = open_subtitles_for_frame (time);
1331 pv->set_text (subtitles.get ());
1339 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1341 /* Log if the assert below is about to fail */
1342 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1343 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1346 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1347 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1348 Audio (data, time, _film->audio_frame_rate());
1349 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1354 Player::fill_audio (DCPTimePeriod period)
1356 if (period.from == period.to) {
1360 DCPOMATIC_ASSERT (period.from < period.to);
1362 DCPTime t = period.from;
1363 while (t < period.to) {
1364 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1365 Frame const samples = block.frames_round(_film->audio_frame_rate());
1367 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1368 silence->make_silent ();
1369 emit_audio (silence, t);
1377 Player::one_video_frame () const
1379 return DCPTime::from_frames (1, _film->video_frame_rate ());
1383 pair<shared_ptr<AudioBuffers>, DCPTime>
1384 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1386 auto const discard_time = discard_to - time;
1387 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1388 auto remaining_frames = audio->frames() - discard_frames;
1389 if (remaining_frames <= 0) {
1390 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1392 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1393 return make_pair(cut, time + discard_time);
1398 Player::set_dcp_decode_reduction (optional<int> reduction)
1400 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1403 boost::mutex::scoped_lock lm (_mutex);
1405 if (reduction == _dcp_decode_reduction) {
1407 Change (ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1411 _dcp_decode_reduction = reduction;
1412 setup_pieces_unlocked ();
1415 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1420 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t)
1422 boost::mutex::scoped_lock lm (_mutex);
1424 for (auto i: _pieces) {
1425 if (i->content == content) {
1426 return content_time_to_dcp (i, t);
1430 /* We couldn't find this content; perhaps things are being changed over */
1435 shared_ptr<const Playlist>
1436 Player::playlist () const
1438 return _playlist ? _playlist : _film->playlist();
1443 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1449 auto piece = weak_piece.lock ();
1450 DCPOMATIC_ASSERT (piece);
1452 auto const vfr = _film->video_frame_rate();
1454 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1455 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1459 Atmos (data.data, dcp_time, data.metadata);