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] = std::make_shared<PlayerVideo>(
852 piece->content->video->crop (),
853 piece->content->video->fade (_film, video.frame),
854 scale_for_display(piece->content->video->scaled_size(_film->frame_size()), _video_container_size, _film->frame_size()),
855 _video_container_size,
858 piece->content->video->colour_conversion(),
859 piece->content->video->range(),
866 for (int i = 0; i < frc.repeat; ++i) {
867 if (t < piece->end(_film)) {
868 emit_video (_last_video[wp], t);
870 t += one_video_frame ();
876 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
878 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
880 auto piece = wp.lock ();
885 auto content = piece->content->audio;
886 DCPOMATIC_ASSERT (content);
888 int const rfr = content->resampled_frame_rate (_film);
890 /* Compute time in the DCP */
891 auto time = piece->resampled_audio_to_dcp (content_audio.frame, _film);
892 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
894 /* And the end of this block in the DCP */
895 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
897 /* Remove anything that comes before the start or after the end of the content */
898 if (time < piece->position()) {
899 auto cut = discard_audio (content_audio.audio, time, piece->position());
901 /* This audio is entirely discarded */
904 content_audio.audio = cut.first;
906 } else if (time > piece->end(_film)) {
909 } else if (end > piece->end(_film)) {
910 Frame const remaining_frames = DCPTime(piece->end(_film) - time).frames_round(rfr);
911 if (remaining_frames == 0) {
914 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
917 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
921 if (content->gain() != 0) {
922 auto gain = make_shared<AudioBuffers>(content_audio.audio);
923 gain->apply_gain (content->gain());
924 content_audio.audio = gain;
929 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
933 if (_audio_processor) {
934 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
939 _audio_merger.push (content_audio.audio, time);
940 piece->set_last_push_end (stream, time + DCPTime::from_frames(content_audio.audio->frames(), _film->audio_frame_rate()));
945 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
947 auto piece = wp.lock ();
948 auto text = wc.lock ();
949 if (!piece || !text) {
953 /* Apply content's subtitle offsets */
954 subtitle.sub.rectangle.x += text->x_offset ();
955 subtitle.sub.rectangle.y += text->y_offset ();
957 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
958 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
959 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
961 /* Apply content's subtitle scale */
962 subtitle.sub.rectangle.width *= text->x_scale ();
963 subtitle.sub.rectangle.height *= text->y_scale ();
966 auto image = subtitle.sub.image;
968 /* We will scale the subtitle up to fit _video_container_size */
969 int const width = subtitle.sub.rectangle.width * _video_container_size.width;
970 int const height = subtitle.sub.rectangle.height * _video_container_size.height;
971 if (width == 0 || height == 0) {
975 dcp::Size scaled_size (width, height);
976 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), true, _fast), subtitle.sub.rectangle));
977 DCPTime from (piece->content_time_to_dcp(subtitle.from()));
979 _active_texts[static_cast<int>(text->type())].add_from (wc, ps, from);
984 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
986 auto piece = wp.lock ();
987 auto text = wc.lock ();
988 if (!piece || !text) {
993 DCPTime const from (piece->content_time_to_dcp(subtitle.from()));
995 if (from > piece->end(_film)) {
999 for (auto s: subtitle.subs) {
1000 s.set_h_position (s.h_position() + text->x_offset ());
1001 s.set_v_position (s.v_position() + text->y_offset ());
1002 float const xs = text->x_scale();
1003 float const ys = text->y_scale();
1004 float size = s.size();
1006 /* Adjust size to express the common part of the scaling;
1007 e.g. if xs = ys = 0.5 we scale size by 2.
1009 if (xs > 1e-5 && ys > 1e-5) {
1010 size *= 1 / min (1 / xs, 1 / ys);
1014 /* Then express aspect ratio changes */
1015 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1016 s.set_aspect_adjust (xs / ys);
1019 s.set_in (dcp::Time(from.seconds(), 1000));
1020 ps.string.push_back (StringText (s, text->outline_width()));
1021 ps.add_fonts (text->fonts ());
1024 _active_texts[static_cast<int>(text->type())].add_from (wc, ps, from);
1029 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to)
1031 auto text = wc.lock ();
1036 if (!_active_texts[static_cast<int>(text->type())].have(wc)) {
1040 shared_ptr<Piece> piece = wp.lock ();
1045 auto const dcp_to = piece->content_time_to_dcp(to);
1047 if (dcp_to > piece->end(_film)) {
1051 auto from = _active_texts[static_cast<int>(text->type())].add_to (wc, dcp_to);
1053 bool const always = (text->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1054 if (text->use() && !always && !text->burn()) {
1055 Text (from.first, text->type(), text->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod (from.second, dcp_to));
1061 Player::seek (DCPTime time, bool accurate)
1063 boost::mutex::scoped_lock lm (_mutex);
1064 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1067 /* We can't seek in this state */
1072 _shuffler->clear ();
1077 if (_audio_processor) {
1078 _audio_processor->flush ();
1081 _audio_merger.clear ();
1082 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1083 _active_texts[i].clear ();
1086 for (auto i: _pieces) {
1087 if (time < i->position()) {
1088 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1089 we must seek this (following) content accurately, otherwise when we come to the end of the current
1090 content we may not start right at the beginning of the next, causing a gap (if the next content has
1091 been trimmed to a point between keyframes, or something).
1093 i->decoder->seek (i->dcp_to_content_time(i->position(), _film), true);
1095 } else if (i->position() <= time && time < i->end(_film)) {
1096 /* During; seek to position */
1097 i->decoder->seek (i->dcp_to_content_time(time, _film), accurate);
1100 /* After; this piece is done */
1106 _last_video_time = time;
1107 _last_video_eyes = Eyes::LEFT;
1108 _last_audio_time = time;
1110 _last_video_time = optional<DCPTime>();
1111 _last_video_eyes = optional<Eyes>();
1112 _last_audio_time = optional<DCPTime>();
1115 _black.set_position (time);
1116 _silent.set_position (time);
1118 _last_video.clear ();
1123 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1125 if (!_film->three_d()) {
1126 if (pv->eyes() == Eyes::LEFT) {
1127 /* Use left-eye images for both eyes... */
1128 pv->set_eyes (Eyes::BOTH);
1129 } else if (pv->eyes() == Eyes::RIGHT) {
1130 /* ...and discard the right */
1135 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1136 player before the video that requires them.
1138 _delay.push_back (make_pair (pv, time));
1140 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1141 _last_video_time = time + one_video_frame();
1143 _last_video_eyes = increment_eyes (pv->eyes());
1145 if (_delay.size() < 3) {
1149 auto to_do = _delay.front();
1151 do_emit_video (to_do.first, to_do.second);
1156 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1158 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1159 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1160 _active_texts[i].clear_before (time);
1164 auto subtitles = open_subtitles_for_frame (time);
1166 pv->set_text (subtitles.get ());
1174 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1176 /* Log if the assert below is about to fail */
1177 if (_last_audio_time && labs(time.get() - _last_audio_time->get()) > 1) {
1178 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1181 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1182 DCPOMATIC_ASSERT (!_last_audio_time || labs(time.get() - _last_audio_time->get()) < 2);
1183 Audio (data, time, _film->audio_frame_rate());
1184 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1189 Player::fill_audio (DCPTimePeriod period)
1191 if (period.from == period.to) {
1195 DCPOMATIC_ASSERT (period.from < period.to);
1197 DCPTime t = period.from;
1198 while (t < period.to) {
1199 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1200 Frame const samples = block.frames_round(_film->audio_frame_rate());
1202 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1203 silence->make_silent ();
1204 emit_audio (silence, t);
1212 Player::one_video_frame () const
1214 return DCPTime::from_frames (1, _film->video_frame_rate ());
1218 pair<shared_ptr<AudioBuffers>, DCPTime>
1219 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1221 auto const discard_time = discard_to - time;
1222 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1223 auto remaining_frames = audio->frames() - discard_frames;
1224 if (remaining_frames <= 0) {
1225 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1227 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1228 return make_pair(cut, time + discard_time);
1233 Player::set_dcp_decode_reduction (optional<int> reduction)
1235 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1238 boost::mutex::scoped_lock lm (_mutex);
1240 if (reduction == _dcp_decode_reduction) {
1242 Change (ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1246 _dcp_decode_reduction = reduction;
1247 setup_pieces_unlocked ();
1250 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1255 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1257 boost::mutex::scoped_lock lm (_mutex);
1259 for (auto i: _pieces) {
1260 if (i->content == content) {
1261 return i->content_time_to_dcp(t);
1265 /* We couldn't find this content; perhaps things are being changed over */
1270 shared_ptr<const Playlist>
1271 Player::playlist () const
1273 return _playlist ? _playlist : _film->playlist();
1278 Player::atmos (weak_ptr<Piece>, ContentAtmos data)
1280 Atmos (data.data, DCPTime::from_frames(data.frame, _film->video_frame_rate()), data.metadata);