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"
25 #include "audio_buffers.h"
26 #include "content_audio.h"
27 #include "dcp_content.h"
28 #include "dcpomatic_log.h"
31 #include "raw_image_proxy.h"
34 #include "render_text.h"
36 #include "content_video.h"
37 #include "player_video.h"
38 #include "frame_rate_change.h"
39 #include "audio_processor.h"
41 #include "referenced_reel_asset.h"
42 #include "decoder_factory.h"
44 #include "video_decoder.h"
45 #include "audio_decoder.h"
46 #include "text_content.h"
47 #include "text_decoder.h"
48 #include "ffmpeg_content.h"
49 #include "audio_content.h"
50 #include "dcp_decoder.h"
51 #include "image_decoder.h"
52 #include "compose.hpp"
56 #include <dcp/reel_sound_asset.h>
57 #include <dcp/reel_subtitle_asset.h>
58 #include <dcp/reel_picture_asset.h>
59 #include <dcp/reel_closed_caption_asset.h>
69 using std::dynamic_pointer_cast;
72 using std::make_shared;
78 using std::shared_ptr;
81 using std::make_shared;
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)
101 , _tolerant (film->tolerant())
102 , _audio_merger (_film->audio_frame_rate())
108 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
110 , _playlist (playlist_)
112 , _tolerant (film->tolerant())
113 , _audio_merger (_film->audio_frame_rate())
122 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
123 /* The butler must hear about this first, so since we are proxying this through to the butler we must
126 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
127 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
128 set_video_container_size (_film->frame_size ());
130 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
133 seek (DCPTime (), true);
144 Player::setup_pieces ()
146 boost::mutex::scoped_lock lm (_mutex);
147 setup_pieces_unlocked ();
152 have_video (shared_ptr<const Content> content)
154 return static_cast<bool>(content->video) && content->video->use();
159 have_audio (shared_ptr<const Content> content)
161 return static_cast<bool>(content->audio);
166 Player::setup_pieces_unlocked ()
168 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
170 auto old_pieces = _pieces;
174 _shuffler = new Shuffler();
175 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
177 for (auto i: playlist()->content()) {
179 if (!i->paths_valid ()) {
183 if (_ignore_video && _ignore_audio && i->text.empty()) {
184 /* We're only interested in text and this content has none */
188 shared_ptr<Decoder> old_decoder;
189 for (auto j: old_pieces) {
190 if (j->content == i) {
191 old_decoder = j->decoder;
196 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
197 DCPOMATIC_ASSERT (decoder);
199 FrameRateChange frc (_film, i);
201 if (decoder->video && _ignore_video) {
202 decoder->video->set_ignore (true);
205 if (decoder->audio && _ignore_audio) {
206 decoder->audio->set_ignore (true);
210 for (auto i: decoder->text) {
211 i->set_ignore (true);
215 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
217 dcp->set_decode_referenced (_play_referenced);
218 if (_play_referenced) {
219 dcp->set_forced_reduction (_dcp_decode_reduction);
223 auto piece = make_shared<Piece>(i, decoder, frc);
224 _pieces.push_back (piece);
226 if (decoder->video) {
227 if (i->video->frame_type() == VideoFrameType::THREE_D_LEFT || i->video->frame_type() == VideoFrameType::THREE_D_RIGHT) {
228 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
229 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
231 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
235 if (decoder->audio) {
236 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
239 auto j = decoder->text.begin();
241 while (j != decoder->text.end()) {
242 (*j)->BitmapStart.connect (
243 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
245 (*j)->PlainStart.connect (
246 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
249 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
255 if (decoder->atmos) {
256 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
260 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
261 if ((*i)->use_video() && (*i)->content->video->frame_type() != VideoFrameType::THREE_D_LEFT && (*i)->content->video->frame_type() != VideoFrameType::THREE_D_RIGHT) {
262 /* Look for content later in the content list with in-use video that overlaps this */
263 auto period = DCPTimePeriod((*i)->position(), (*i)->end(_film));
266 for (; j != _pieces.end(); ++j) {
267 if ((*j)->use_video()) {
268 (*i)->ignore_video = DCPTimePeriod((*j)->position(), (*j)->end(_film)).overlap(period);
274 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
275 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
277 _last_video_time = boost::optional<dcpomatic::DCPTime>();
278 _last_video_eyes = Eyes::BOTH;
279 _last_audio_time = boost::optional<dcpomatic::DCPTime>();
284 Player::playlist_content_change (ChangeType type, int property, bool frequent)
286 if (property == VideoContentProperty::CROP) {
287 if (type == ChangeType::DONE) {
288 auto const vcs = video_container_size();
289 boost::mutex::scoped_lock lm (_mutex);
290 for (auto const& i: _delay) {
291 i.first->reset_metadata (_film, vcs);
295 if (type == ChangeType::PENDING) {
296 /* The player content is probably about to change, so we can't carry on
297 until that has happened and we've rebuilt our pieces. Stop pass()
298 and seek() from working until then.
301 } else if (type == ChangeType::DONE) {
302 /* A change in our content has gone through. Re-build our pieces. */
305 } else if (type == ChangeType::CANCELLED) {
310 Change (type, property, frequent);
315 Player::set_video_container_size (dcp::Size s)
317 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
320 boost::mutex::scoped_lock lm (_mutex);
322 if (s == _video_container_size) {
324 Change (ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
328 _video_container_size = s;
330 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
331 _black_image->make_black ();
334 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
339 Player::playlist_change (ChangeType type)
341 if (type == ChangeType::DONE) {
344 Change (type, PlayerProperty::PLAYLIST, false);
349 Player::film_change (ChangeType type, Film::Property p)
351 /* Here we should notice Film properties that affect our output, and
352 alert listeners that our output now would be different to how it was
353 last time we were run.
356 if (p == Film::Property::CONTAINER) {
357 Change (type, PlayerProperty::FILM_CONTAINER, false);
358 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
359 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
360 so we need new pieces here.
362 if (type == ChangeType::DONE) {
365 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
366 } else if (p == Film::Property::AUDIO_PROCESSOR) {
367 if (type == ChangeType::DONE && _film->audio_processor ()) {
368 boost::mutex::scoped_lock lm (_mutex);
369 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
371 } else if (p == Film::Property::AUDIO_CHANNELS) {
372 if (type == ChangeType::DONE) {
373 boost::mutex::scoped_lock lm (_mutex);
374 _audio_merger.clear ();
380 shared_ptr<PlayerVideo>
381 Player::black_player_video_frame (Eyes eyes) const
383 return std::make_shared<PlayerVideo> (
384 std::make_shared<const RawImageProxy>(_black_image),
387 _video_container_size,
388 _video_container_size,
391 PresetColourConversion::all().front().conversion,
393 std::weak_ptr<Content>(),
394 boost::optional<Frame>(),
401 Player::get_subtitle_fonts ()
403 boost::mutex::scoped_lock lm (_mutex);
405 vector<FontData> fonts;
406 for (auto i: _pieces) {
407 /* XXX: things may go wrong if there are duplicate font IDs
408 with different font files.
410 auto f = i->decoder->fonts ();
411 copy (f.begin(), f.end(), back_inserter(fonts));
418 /** Set this player never to produce any video data */
420 Player::set_ignore_video ()
422 boost::mutex::scoped_lock lm (_mutex);
423 _ignore_video = true;
424 setup_pieces_unlocked ();
429 Player::set_ignore_audio ()
431 boost::mutex::scoped_lock lm (_mutex);
432 _ignore_audio = true;
433 setup_pieces_unlocked ();
438 Player::set_ignore_text ()
440 boost::mutex::scoped_lock lm (_mutex);
442 setup_pieces_unlocked ();
446 /** Set the player to always burn open texts into the image regardless of the content settings */
448 Player::set_always_burn_open_subtitles ()
450 boost::mutex::scoped_lock lm (_mutex);
451 _always_burn_open_subtitles = true;
455 /** Sets up the player to be faster, possibly at the expense of quality */
459 boost::mutex::scoped_lock lm (_mutex);
461 setup_pieces_unlocked ();
466 Player::set_play_referenced ()
468 boost::mutex::scoped_lock lm (_mutex);
469 _play_referenced = true;
470 setup_pieces_unlocked ();
475 maybe_add_asset (list<ReferencedReelAsset>& a, shared_ptr<dcp::ReelAsset> r, Frame reel_trim_start, Frame reel_trim_end, DCPTime from, int const ffr)
477 DCPOMATIC_ASSERT (r);
478 r->set_entry_point (r->entry_point().get_value_or(0) + reel_trim_start);
479 r->set_duration (r->actual_duration() - reel_trim_start - reel_trim_end);
480 if (r->actual_duration() > 0) {
482 ReferencedReelAsset(r, DCPTimePeriod(from, from + DCPTime::from_frames(r->actual_duration(), ffr)))
488 list<ReferencedReelAsset>
489 Player::get_reel_assets ()
491 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
493 list<ReferencedReelAsset> a;
495 for (auto i: playlist()->content()) {
496 auto j = dynamic_pointer_cast<DCPContent> (i);
501 scoped_ptr<DCPDecoder> decoder;
503 decoder.reset (new DCPDecoder(_film, j, false, false, shared_ptr<DCPDecoder>()));
508 DCPOMATIC_ASSERT (j->video_frame_rate ());
509 double const cfr = j->video_frame_rate().get();
510 Frame const trim_start = j->trim_start().frames_round (cfr);
511 Frame const trim_end = j->trim_end().frames_round (cfr);
512 int const ffr = _film->video_frame_rate ();
514 /* position in the asset from the start */
515 int64_t offset_from_start = 0;
516 /* position in the asset from the end */
517 int64_t offset_from_end = 0;
518 for (auto k: decoder->reels()) {
519 /* Assume that main picture duration is the length of the reel */
520 offset_from_end += k->main_picture()->actual_duration();
523 for (auto k: decoder->reels()) {
525 /* Assume that main picture duration is the length of the reel */
526 int64_t const reel_duration = k->main_picture()->actual_duration();
528 /* See doc/design/trim_reels.svg */
529 Frame const reel_trim_start = min(reel_duration, max(int64_t(0), trim_start - offset_from_start));
530 Frame const reel_trim_end = min(reel_duration, max(int64_t(0), reel_duration - (offset_from_end - trim_end)));
532 auto const from = i->position() + DCPTime::from_frames (offset_from_start, _film->video_frame_rate());
533 if (j->reference_video ()) {
534 maybe_add_asset (a, k->main_picture(), reel_trim_start, reel_trim_end, from, ffr);
537 if (j->reference_audio ()) {
538 maybe_add_asset (a, k->main_sound(), reel_trim_start, reel_trim_end, from, ffr);
541 if (j->reference_text (TextType::OPEN_SUBTITLE)) {
542 maybe_add_asset (a, k->main_subtitle(), reel_trim_start, reel_trim_end, from, ffr);
545 if (j->reference_text (TextType::CLOSED_CAPTION)) {
546 for (auto l: k->closed_captions()) {
547 maybe_add_asset (a, l, reel_trim_start, reel_trim_end, from, ffr);
551 offset_from_start += reel_duration;
552 offset_from_end -= reel_duration;
563 boost::mutex::scoped_lock lm (_mutex);
566 /* We can't pass in this state */
567 LOG_DEBUG_PLAYER_NC ("Player is suspended");
571 if (_playback_length == DCPTime()) {
572 /* Special; just give one black frame */
573 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
577 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
579 shared_ptr<Piece> earliest_content;
580 optional<DCPTime> earliest_time;
582 for (auto i: _pieces) {
587 auto const t = i->content_time_to_dcp (max(i->decoder->position(), i->content->trim_start()));
588 if (t > i->end(_film)) {
592 /* Given two choices at the same time, pick the one with texts so we see it before
595 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
597 earliest_content = i;
611 if (earliest_content) {
615 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
616 earliest_time = _black.position ();
620 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
621 earliest_time = _silent.position ();
628 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
629 earliest_content->done = earliest_content->decoder->pass ();
630 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
631 if (dcp && !_play_referenced && dcp->reference_audio()) {
632 /* We are skipping some referenced DCP audio content, so we need to update _last_audio_time
633 to `hide' the fact that no audio was emitted during the referenced DCP (though
634 we need to behave as though it was).
636 _last_audio_time = dcp->end (_film);
641 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
642 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
643 _black.set_position (_black.position() + one_video_frame());
647 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
648 DCPTimePeriod period (_silent.period_at_position());
649 if (_last_audio_time) {
650 /* Sometimes the thing that happened last finishes fractionally before
651 or after this silence. Bodge the start time of the silence to fix it.
652 I think this is nothing to worry about since we will just add or
653 remove a little silence at the end of some content.
655 int64_t const error = labs(period.from.get() - _last_audio_time->get());
656 /* Let's not worry about less than a frame at 24fps */
657 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
658 if (error >= too_much_error) {
659 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
661 DCPOMATIC_ASSERT (error < too_much_error);
662 period.from = *_last_audio_time;
664 if (period.duration() > one_video_frame()) {
665 period.to = period.from + one_video_frame();
668 _silent.set_position (period.to);
676 /* Emit any audio that is ready */
678 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
679 of our streams, or the position of the _silent.
681 auto pull_to = _playback_length;
682 for (auto i: _pieces) {
683 i->update_pull_to (pull_to);
685 if (!_silent.done() && _silent.position() < pull_to) {
686 pull_to = _silent.position();
689 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
690 auto audio = _audio_merger.pull (pull_to);
691 for (auto i = audio.begin(); i != audio.end(); ++i) {
692 if (_last_audio_time && i->second < *_last_audio_time) {
693 /* This new data comes before the last we emitted (or the last seek); discard it */
694 auto cut = discard_audio (i->first, i->second, *_last_audio_time);
699 } else if (_last_audio_time && i->second > *_last_audio_time) {
700 /* There's a gap between this data and the last we emitted; fill with silence */
701 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
704 emit_audio (i->first, i->second);
709 for (auto const& i: _delay) {
710 do_emit_video(i.first, i.second);
718 /** @return Open subtitles for the frame at the given time, converted to images */
719 optional<PositionImage>
720 Player::open_subtitles_for_frame (DCPTime time) const
722 list<PositionImage> captions;
723 int const vfr = _film->video_frame_rate();
727 _active_texts[static_cast<int>(TextType::OPEN_SUBTITLE)].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
730 /* Bitmap subtitles */
731 for (auto i: j.bitmap) {
736 /* i.image will already have been scaled to fit _video_container_size */
737 dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height);
743 lrint(_video_container_size.width * i.rectangle.x),
744 lrint(_video_container_size.height * i.rectangle.y)
750 /* String subtitles (rendered to an image) */
751 if (!j.string.empty()) {
752 auto s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
753 copy (s.begin(), s.end(), back_inserter (captions));
757 if (captions.empty()) {
761 return merge (captions);
766 Player::video (weak_ptr<Piece> wp, ContentVideo video)
768 auto piece = wp.lock ();
773 if (!piece->use_video()) {
777 auto frc = piece->frame_rate_change();
778 if (frc.skip && (video.frame % 2) == 1) {
782 /* Time of the first frame we will emit */
783 DCPTime const time = piece->content_video_to_dcp (video.frame);
784 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
786 /* Discard if it's before the content's period or the last accurate seek. We can't discard
787 if it's after the content's period here as in that case we still need to fill any gap between
788 `now' and the end of the content's period.
790 if (time < piece->position() || (_last_video_time && time < *_last_video_time)) {
794 if (piece->ignore_video && piece->ignore_video->contains(time)) {
798 /* Fill gaps that we discover now that we have some video which needs to be emitted.
799 This is where we need to fill to.
801 DCPTime fill_to = min (time, piece->end(_film));
803 if (_last_video_time) {
804 DCPTime fill_from = max (*_last_video_time, piece->position());
806 /* Fill if we have more than half a frame to do */
807 if ((fill_to - fill_from) > one_video_frame() / 2) {
808 auto last = _last_video.find (wp);
809 if (_film->three_d()) {
810 auto fill_to_eyes = video.eyes;
811 if (fill_to_eyes == Eyes::BOTH) {
812 fill_to_eyes = Eyes::LEFT;
814 if (fill_to == piece->end(_film)) {
815 /* Don't fill after the end of the content */
816 fill_to_eyes = Eyes::LEFT;
819 auto eyes = _last_video_eyes.get_value_or(Eyes::LEFT);
820 if (eyes == Eyes::BOTH) {
823 while (j < fill_to || eyes != fill_to_eyes) {
824 if (last != _last_video.end()) {
825 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
826 auto copy = last->second->shallow_copy();
827 copy->set_eyes (eyes);
828 emit_video (copy, j);
830 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
831 emit_video (black_player_video_frame(eyes), j);
833 if (eyes == Eyes::RIGHT) {
834 j += one_video_frame();
836 eyes = increment_eyes (eyes);
839 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
840 if (last != _last_video.end()) {
841 emit_video (last->second, j);
843 emit_video (black_player_video_frame(Eyes::BOTH), j);
850 _last_video[wp] = piece->player_video (video, _film, _video_container_size);
853 for (int i = 0; i < frc.repeat; ++i) {
854 if (t < piece->end(_film)) {
855 emit_video (_last_video[wp], t);
857 t += one_video_frame ();
863 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
865 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
867 auto piece = wp.lock ();
872 auto content = piece->content->audio;
873 DCPOMATIC_ASSERT (content);
875 int const rfr = content->resampled_frame_rate (_film);
877 /* Compute time in the DCP */
878 auto time = piece->resampled_audio_to_dcp (content_audio.frame, _film);
879 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
881 /* And the end of this block in the DCP */
882 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
884 /* Remove anything that comes before the start or after the end of the content */
885 if (time < piece->position()) {
886 auto cut = discard_audio (content_audio.audio, time, piece->position());
888 /* This audio is entirely discarded */
891 content_audio.audio = cut.first;
893 } else if (time > piece->end(_film)) {
896 } else if (end > piece->end(_film)) {
897 Frame const remaining_frames = DCPTime(piece->end(_film) - time).frames_round(rfr);
898 if (remaining_frames == 0) {
901 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
904 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
908 if (content->gain() != 0) {
909 auto gain = make_shared<AudioBuffers>(content_audio.audio);
910 gain->apply_gain (content->gain());
911 content_audio.audio = gain;
916 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
920 if (_audio_processor) {
921 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
926 _audio_merger.push (content_audio.audio, time);
927 piece->set_last_push_end (stream, time + DCPTime::from_frames(content_audio.audio->frames(), _film->audio_frame_rate()));
932 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
934 auto piece = wp.lock ();
935 auto text = wc.lock ();
936 if (!piece || !text) {
940 /* Apply content's subtitle offsets */
941 subtitle.sub.rectangle.x += text->x_offset ();
942 subtitle.sub.rectangle.y += text->y_offset ();
944 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
945 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
946 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
948 /* Apply content's subtitle scale */
949 subtitle.sub.rectangle.width *= text->x_scale ();
950 subtitle.sub.rectangle.height *= text->y_scale ();
953 auto image = subtitle.sub.image;
955 /* We will scale the subtitle up to fit _video_container_size */
956 int const width = subtitle.sub.rectangle.width * _video_container_size.width;
957 int const height = subtitle.sub.rectangle.height * _video_container_size.height;
958 if (width == 0 || height == 0) {
962 dcp::Size scaled_size (width, height);
963 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), true, _fast), subtitle.sub.rectangle));
964 DCPTime from (piece->content_time_to_dcp(subtitle.from()));
966 _active_texts[static_cast<int>(text->type())].add_from (wc, ps, from);
971 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
973 auto piece = wp.lock ();
974 auto text = wc.lock ();
975 if (!piece || !text) {
980 DCPTime const from (piece->content_time_to_dcp(subtitle.from()));
982 if (from > piece->end(_film)) {
986 for (auto s: subtitle.subs) {
987 s.set_h_position (s.h_position() + text->x_offset ());
988 s.set_v_position (s.v_position() + text->y_offset ());
989 float const xs = text->x_scale();
990 float const ys = text->y_scale();
991 float size = s.size();
993 /* Adjust size to express the common part of the scaling;
994 e.g. if xs = ys = 0.5 we scale size by 2.
996 if (xs > 1e-5 && ys > 1e-5) {
997 size *= 1 / min (1 / xs, 1 / ys);
1001 /* Then express aspect ratio changes */
1002 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1003 s.set_aspect_adjust (xs / ys);
1006 s.set_in (dcp::Time(from.seconds(), 1000));
1007 ps.string.push_back (StringText (s, text->outline_width()));
1008 ps.add_fonts (text->fonts ());
1011 _active_texts[static_cast<int>(text->type())].add_from (wc, ps, from);
1016 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to)
1018 auto text = wc.lock ();
1023 if (!_active_texts[static_cast<int>(text->type())].have(wc)) {
1027 shared_ptr<Piece> piece = wp.lock ();
1032 auto const dcp_to = piece->content_time_to_dcp(to);
1034 if (dcp_to > piece->end(_film)) {
1038 auto from = _active_texts[static_cast<int>(text->type())].add_to (wc, dcp_to);
1040 bool const always = (text->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1041 if (text->use() && !always && !text->burn()) {
1042 Text (from.first, text->type(), text->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod (from.second, dcp_to));
1048 Player::seek (DCPTime time, bool accurate)
1050 boost::mutex::scoped_lock lm (_mutex);
1051 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1054 /* We can't seek in this state */
1059 _shuffler->clear ();
1064 if (_audio_processor) {
1065 _audio_processor->flush ();
1068 _audio_merger.clear ();
1069 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1070 _active_texts[i].clear ();
1073 for (auto i: _pieces) {
1074 if (time < i->position()) {
1075 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1076 we must seek this (following) content accurately, otherwise when we come to the end of the current
1077 content we may not start right at the beginning of the next, causing a gap (if the next content has
1078 been trimmed to a point between keyframes, or something).
1080 i->decoder->seek (i->dcp_to_content_time(i->position(), _film), true);
1082 } else if (i->position() <= time && time < i->end(_film)) {
1083 /* During; seek to position */
1084 i->decoder->seek (i->dcp_to_content_time(time, _film), accurate);
1087 /* After; this piece is done */
1093 _last_video_time = time;
1094 _last_video_eyes = Eyes::LEFT;
1095 _last_audio_time = time;
1097 _last_video_time = optional<DCPTime>();
1098 _last_video_eyes = optional<Eyes>();
1099 _last_audio_time = optional<DCPTime>();
1102 _black.set_position (time);
1103 _silent.set_position (time);
1105 _last_video.clear ();
1110 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1112 if (!_film->three_d()) {
1113 if (pv->eyes() == Eyes::LEFT) {
1114 /* Use left-eye images for both eyes... */
1115 pv->set_eyes (Eyes::BOTH);
1116 } else if (pv->eyes() == Eyes::RIGHT) {
1117 /* ...and discard the right */
1122 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1123 player before the video that requires them.
1125 _delay.push_back (make_pair (pv, time));
1127 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1128 _last_video_time = time + one_video_frame();
1130 _last_video_eyes = increment_eyes (pv->eyes());
1132 if (_delay.size() < 3) {
1136 auto to_do = _delay.front();
1138 do_emit_video (to_do.first, to_do.second);
1143 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1145 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1146 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1147 _active_texts[i].clear_before (time);
1151 auto subtitles = open_subtitles_for_frame (time);
1153 pv->set_text (subtitles.get ());
1161 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1163 /* Log if the assert below is about to fail */
1164 if (_last_audio_time && labs(time.get() - _last_audio_time->get()) > 1) {
1165 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1168 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1169 DCPOMATIC_ASSERT (!_last_audio_time || labs(time.get() - _last_audio_time->get()) < 2);
1170 Audio (data, time, _film->audio_frame_rate());
1171 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1176 Player::fill_audio (DCPTimePeriod period)
1178 if (period.from == period.to) {
1182 DCPOMATIC_ASSERT (period.from < period.to);
1184 DCPTime t = period.from;
1185 while (t < period.to) {
1186 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1187 Frame const samples = block.frames_round(_film->audio_frame_rate());
1189 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1190 silence->make_silent ();
1191 emit_audio (silence, t);
1199 Player::one_video_frame () const
1201 return DCPTime::from_frames (1, _film->video_frame_rate ());
1205 pair<shared_ptr<AudioBuffers>, DCPTime>
1206 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1208 auto const discard_time = discard_to - time;
1209 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1210 auto remaining_frames = audio->frames() - discard_frames;
1211 if (remaining_frames <= 0) {
1212 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1214 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1215 return make_pair(cut, time + discard_time);
1220 Player::set_dcp_decode_reduction (optional<int> reduction)
1222 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1225 boost::mutex::scoped_lock lm (_mutex);
1227 if (reduction == _dcp_decode_reduction) {
1229 Change (ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1233 _dcp_decode_reduction = reduction;
1234 setup_pieces_unlocked ();
1237 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1242 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1244 boost::mutex::scoped_lock lm (_mutex);
1246 for (auto i: _pieces) {
1247 if (i->content == content) {
1248 return i->content_time_to_dcp(t);
1252 /* We couldn't find this content; perhaps things are being changed over */
1257 shared_ptr<const Playlist>
1258 Player::playlist () const
1260 return _playlist ? _playlist : _film->playlist();
1265 Player::atmos (weak_ptr<Piece>, ContentAtmos data)
1267 Atmos (data.data, DCPTime::from_frames(data.frame, _film->video_frame_rate()), data.metadata);