2 Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 #include "atmos_decoder.h"
23 #include "audio_buffers.h"
24 #include "audio_content.h"
25 #include "audio_decoder.h"
26 #include "audio_processor.h"
27 #include "compose.hpp"
29 #include "content_audio.h"
30 #include "content_video.h"
31 #include "dcp_content.h"
32 #include "dcp_decoder.h"
33 #include "dcpomatic_log.h"
35 #include "decoder_factory.h"
36 #include "ffmpeg_content.h"
38 #include "frame_rate_change.h"
40 #include "image_decoder.h"
43 #include "maths_util.h"
46 #include "player_video.h"
49 #include "raw_image_proxy.h"
50 #include "render_text.h"
52 #include "text_content.h"
53 #include "text_decoder.h"
55 #include "video_decoder.h"
57 #include <dcp/reel_closed_caption_asset.h>
58 #include <dcp/reel_picture_asset.h>
59 #include <dcp/reel_sound_asset.h>
60 #include <dcp/reel_subtitle_asset.h>
70 using std::dynamic_pointer_cast;
73 using std::make_shared;
77 using std::shared_ptr;
80 using boost::optional;
81 using boost::scoped_ptr;
82 #if BOOST_VERSION >= 106100
83 using namespace boost::placeholders;
85 using namespace dcpomatic;
88 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
89 int const PlayerProperty::PLAYLIST = 701;
90 int const PlayerProperty::FILM_CONTAINER = 702;
91 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
92 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
93 int const PlayerProperty::PLAYBACK_LENGTH = 705;
96 Player::Player (shared_ptr<const Film> film, Image::Alignment subtitle_alignment)
99 , _ignore_video(false)
100 , _ignore_audio(false)
101 , _ignore_text(false)
102 , _always_burn_open_subtitles(false)
104 , _tolerant (film->tolerant())
105 , _play_referenced(false)
106 , _audio_merger (_film->audio_frame_rate())
107 , _subtitle_alignment (subtitle_alignment)
113 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
115 , _playlist (playlist_)
117 , _ignore_video(false)
118 , _ignore_audio(false)
119 , _ignore_text(false)
120 , _always_burn_open_subtitles(false)
122 , _tolerant (film->tolerant())
123 , _play_referenced(false)
124 , _audio_merger (_film->audio_frame_rate())
133 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
134 /* The butler must hear about this first, so since we are proxying this through to the butler we must
137 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
138 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
139 set_video_container_size (_film->frame_size ());
141 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
144 seek (DCPTime (), true);
149 have_video (shared_ptr<const Content> content)
151 return static_cast<bool>(content->video) && content->video->use() && content->can_be_played();
156 have_audio (shared_ptr<const Content> content)
158 return static_cast<bool>(content->audio) && content->can_be_played();
163 Player::setup_pieces ()
165 boost::mutex::scoped_lock lm (_mutex);
167 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
169 auto old_pieces = _pieces;
172 auto playlist_content = playlist()->content();
173 bool const have_threed = std::any_of(
174 playlist_content.begin(),
175 playlist_content.end(),
176 [](shared_ptr<const Content> c) {
177 return c->video && (c->video->frame_type() == VideoFrameType::THREE_D_LEFT || c->video->frame_type() == VideoFrameType::THREE_D_RIGHT);
182 _shuffler.reset(new Shuffler());
183 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
186 for (auto i: playlist()->content()) {
188 if (!i->paths_valid ()) {
192 if (_ignore_video && _ignore_audio && i->text.empty()) {
193 /* We're only interested in text and this content has none */
197 shared_ptr<Decoder> old_decoder;
198 for (auto j: old_pieces) {
199 if (j->content == i) {
200 old_decoder = j->decoder;
205 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
206 DCPOMATIC_ASSERT (decoder);
208 FrameRateChange frc (_film, i);
210 if (decoder->video && _ignore_video) {
211 decoder->video->set_ignore (true);
214 if (decoder->audio && _ignore_audio) {
215 decoder->audio->set_ignore (true);
219 for (auto i: decoder->text) {
220 i->set_ignore (true);
224 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
226 dcp->set_decode_referenced (_play_referenced);
227 if (_play_referenced) {
228 dcp->set_forced_reduction (_dcp_decode_reduction);
232 auto piece = make_shared<Piece>(i, decoder, frc);
233 _pieces.push_back (piece);
235 if (decoder->video) {
237 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
238 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler.get(), weak_ptr<Piece>(piece), _1));
240 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
244 if (decoder->audio) {
245 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
248 auto j = decoder->text.begin();
250 while (j != decoder->text.end()) {
251 (*j)->BitmapStart.connect (
252 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
254 (*j)->PlainStart.connect (
255 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
258 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
264 if (decoder->atmos) {
265 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
269 _stream_states.clear ();
270 for (auto i: _pieces) {
271 if (i->content->audio) {
272 for (auto j: i->content->audio->streams()) {
273 _stream_states[j] = StreamState (i, i->content->position ());
278 auto ignore_overlap = [](shared_ptr<VideoContent> v) {
279 return v && v->use() && v->frame_type() != VideoFrameType::THREE_D_LEFT && v->frame_type() != VideoFrameType::THREE_D_RIGHT;
282 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
283 if (ignore_overlap((*i)->content->video)) {
284 /* Look for content later in the content list with in-use video that overlaps this */
285 auto const period = DCPTimePeriod((*i)->content->position(), (*i)->content->end(_film));
286 for (auto j = std::next(i); j != _pieces.end(); ++j) {
287 if ((*j)->content->video && ignore_overlap((*j)->content->video)) {
288 (*i)->ignore_video = DCPTimePeriod((*j)->content->position(), (*j)->content->end(_film)).overlap(period);
294 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
295 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
297 _next_video_time = boost::none;
298 _next_audio_time = boost::none;
303 Player::playlist_content_change (ChangeType type, int property, bool frequent)
305 if (property == VideoContentProperty::CROP) {
306 if (type == ChangeType::DONE) {
307 boost::mutex::scoped_lock lm (_mutex);
308 for (auto const& i: _delay) {
309 i.first->reset_metadata(_film, _video_container_size);
313 if (type == ChangeType::PENDING) {
314 /* The player content is probably about to change, so we can't carry on
315 until that has happened and we've rebuilt our pieces. Stop pass()
316 and seek() from working until then.
319 } else if (type == ChangeType::DONE) {
320 /* A change in our content has gone through. Re-build our pieces. */
323 } else if (type == ChangeType::CANCELLED) {
328 Change (type, property, frequent);
333 Player::set_video_container_size (dcp::Size s)
335 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
337 if (s == _video_container_size) {
338 Change(ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
342 _video_container_size = s;
345 boost::mutex::scoped_lock lm(_black_image_mutex);
346 _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
347 _black_image->make_black ();
350 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
355 Player::playlist_change (ChangeType type)
357 if (type == ChangeType::DONE) {
360 Change (type, PlayerProperty::PLAYLIST, false);
365 Player::film_change (ChangeType type, Film::Property p)
367 /* Here we should notice Film properties that affect our output, and
368 alert listeners that our output now would be different to how it was
369 last time we were run.
372 if (p == Film::Property::CONTAINER) {
373 Change (type, PlayerProperty::FILM_CONTAINER, false);
374 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
375 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
376 so we need new pieces here.
378 if (type == ChangeType::DONE) {
381 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
382 } else if (p == Film::Property::AUDIO_PROCESSOR) {
383 if (type == ChangeType::DONE && _film->audio_processor ()) {
384 boost::mutex::scoped_lock lm (_mutex);
385 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
387 } else if (p == Film::Property::AUDIO_CHANNELS) {
388 if (type == ChangeType::DONE) {
389 boost::mutex::scoped_lock lm (_mutex);
390 _audio_merger.clear ();
396 shared_ptr<PlayerVideo>
397 Player::black_player_video_frame (Eyes eyes) const
399 boost::mutex::scoped_lock lm(_black_image_mutex);
401 return std::make_shared<PlayerVideo> (
402 make_shared<const RawImageProxy>(_black_image),
405 _video_container_size,
406 _video_container_size,
409 PresetColourConversion::all().front().conversion,
411 std::weak_ptr<Content>(),
412 boost::optional<dcpomatic::ContentTime>(),
419 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
421 auto s = t - piece->content->position ();
422 s = min (piece->content->length_after_trim(_film), s);
423 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
425 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
426 then convert that ContentTime to frames at the content's rate. However this fails for
427 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
428 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
430 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
432 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
437 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
439 /* See comment in dcp_to_content_video */
440 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
441 return d + piece->content->position();
446 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
448 auto s = t - piece->content->position ();
449 s = min (piece->content->length_after_trim(_film), s);
450 /* See notes in dcp_to_content_video */
451 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
456 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
458 /* See comment in dcp_to_content_video */
459 return DCPTime::from_frames (f, _film->audio_frame_rate())
460 - DCPTime (piece->content->trim_start(), piece->frc)
461 + piece->content->position();
466 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
468 auto s = t - piece->content->position ();
469 s = min (piece->content->length_after_trim(_film), s);
470 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
475 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
477 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
481 vector<shared_ptr<Font>>
482 Player::get_subtitle_fonts ()
484 boost::mutex::scoped_lock lm (_mutex);
486 vector<shared_ptr<Font>> fonts;
487 for (auto piece: _pieces) {
488 for (auto text: piece->content->text) {
489 auto text_fonts = text->fonts();
490 copy (text_fonts.begin(), text_fonts.end(), back_inserter(fonts));
498 /** Set this player never to produce any video data */
500 Player::set_ignore_video ()
502 _ignore_video = true;
508 Player::set_ignore_audio ()
510 _ignore_audio = true;
516 Player::set_ignore_text ()
523 /** Set the player to always burn open texts into the image regardless of the content settings */
525 Player::set_always_burn_open_subtitles ()
527 _always_burn_open_subtitles = true;
531 /** Sets up the player to be faster, possibly at the expense of quality */
541 Player::set_play_referenced ()
543 _play_referenced = true;
551 boost::mutex::scoped_lock lm (_mutex);
554 /* We can't pass in this state */
555 LOG_DEBUG_PLAYER_NC ("Player is suspended");
559 if (_playback_length.load() == DCPTime()) {
560 /* Special; just give one black frame */
561 use_video(black_player_video_frame(Eyes::BOTH), DCPTime(), one_video_frame());
565 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
567 shared_ptr<Piece> earliest_content;
568 optional<DCPTime> earliest_time;
570 for (auto i: _pieces) {
575 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
576 if (t > i->content->end(_film)) {
580 /* Given two choices at the same time, pick the one with texts so we see it before
583 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
585 earliest_content = i;
599 if (earliest_content) {
603 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
604 earliest_time = _black.position ();
608 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
609 earliest_time = _silent.position ();
616 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
617 earliest_content->done = earliest_content->decoder->pass ();
618 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
619 if (dcp && !_play_referenced) {
620 if (dcp->reference_video()) {
621 _next_video_time = dcp->end(_film);
623 if (dcp->reference_audio()) {
624 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
625 to `hide' the fact that no audio was emitted during the referenced DCP (though
626 we need to behave as though it was).
628 _next_audio_time = dcp->end(_film);
634 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
635 use_video(black_player_video_frame(Eyes::BOTH), _black.position(), _black.period_at_position().to);
636 _black.set_position (_black.position() + one_video_frame());
640 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
641 DCPTimePeriod period (_silent.period_at_position());
642 if (_next_audio_time) {
643 /* Sometimes the thing that happened last finishes fractionally before
644 or after this silence. Bodge the start time of the silence to fix it.
645 I think this is nothing to worry about since we will just add or
646 remove a little silence at the end of some content.
648 int64_t const error = labs(period.from.get() - _next_audio_time->get());
649 /* Let's not worry about less than a frame at 24fps */
650 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
651 if (error >= too_much_error) {
652 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
654 DCPOMATIC_ASSERT (error < too_much_error);
655 period.from = *_next_audio_time;
657 if (period.duration() > one_video_frame()) {
658 period.to = period.from + one_video_frame();
661 _silent.set_position (period.to);
669 /* Emit any audio that is ready */
671 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
672 of our streams, or the position of the _silent. First, though we choose only streams that are less than
673 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
674 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
675 that will never come, causing bugs like #2101.
677 constexpr int ignore_streams_behind = 5;
679 using state_pair = std::pair<AudioStreamPtr, StreamState>;
681 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
682 auto latest_last_push_end = std::max_element(
683 _stream_states.begin(),
684 _stream_states.end(),
685 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
688 if (latest_last_push_end != _stream_states.end()) {
689 LOG_DEBUG_PLAYER("Leading audio stream is in %1 at %2", latest_last_push_end->second.piece->content->path(0), to_string(latest_last_push_end->second.last_push_end));
692 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
693 std::map<AudioStreamPtr, StreamState> alive_stream_states;
694 for (auto const& i: _stream_states) {
695 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
696 alive_stream_states.insert(i);
698 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
702 auto pull_to = _playback_length.load();
703 for (auto const& i: alive_stream_states) {
704 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
705 pull_to = i.second.last_push_end;
708 if (!_silent.done() && _silent.position() < pull_to) {
709 pull_to = _silent.position();
712 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
713 auto audio = _audio_merger.pull (pull_to);
714 for (auto i = audio.begin(); i != audio.end(); ++i) {
715 if (_next_audio_time && i->second < *_next_audio_time) {
716 /* This new data comes before the last we emitted (or the last seek); discard it */
717 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
722 } else if (_next_audio_time && i->second > *_next_audio_time) {
723 /* There's a gap between this data and the last we emitted; fill with silence */
724 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
727 emit_audio (i->first, i->second);
731 emit_video_until(_film->length());
736 for (auto const& i: _delay) {
737 emit_video(i.first, i.second);
745 /** @return Open subtitles for the frame at the given time, converted to images */
746 optional<PositionImage>
747 Player::open_subtitles_for_frame (DCPTime time) const
749 list<PositionImage> captions;
750 int const vfr = _film->video_frame_rate();
754 _active_texts[TextType::OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
757 /* Bitmap subtitles */
758 for (auto i: j.bitmap) {
763 /* i.image will already have been scaled to fit _video_container_size */
764 dcp::Size scaled_size (i.rectangle.width * _video_container_size.load().width, i.rectangle.height * _video_container_size.load().height);
770 lrint(_video_container_size.load().width * i.rectangle.x),
771 lrint(_video_container_size.load().height * i.rectangle.y)
777 /* String subtitles (rendered to an image) */
778 if (!j.string.empty()) {
779 auto s = render_text(j.string, _video_container_size, time, vfr);
780 copy (s.begin(), s.end(), back_inserter (captions));
784 if (captions.empty()) {
788 return merge (captions, _subtitle_alignment);
793 Player::emit_video_until(DCPTime time)
795 auto frame = [this](shared_ptr<PlayerVideo> pv, DCPTime time) {
796 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
797 player before the video that requires them.
799 _delay.push_back(make_pair(pv, time));
801 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
802 _next_video_time = time + one_video_frame();
805 if (_delay.size() < 3) {
809 auto to_do = _delay.front();
811 emit_video(to_do.first, to_do.second);
814 auto const age_threshold = one_video_frame() * 2;
816 while (_next_video_time.get_value_or({}) < time) {
817 auto left = _last_video[Eyes::LEFT];
818 auto right = _last_video[Eyes::RIGHT];
819 auto both = _last_video[Eyes::BOTH];
821 auto const next = _next_video_time.get_value_or({});
826 (!both.first || (left.second >= both.second && right.second >= both.second)) &&
827 (left.second - next) < age_threshold &&
828 (right.second - next) < age_threshold
830 frame(left.first, next);
831 frame(right.first, next);
832 } else if (both.first && (both.second - next) < age_threshold) {
833 frame(both.first, next);
834 LOG_DEBUG_PLAYER("Content %1 selected for DCP %2 (age %3)", to_string(both.second), to_string(next), to_string(both.second - next));
836 frame(black_player_video_frame(Eyes::BOTH), next);
837 LOG_DEBUG_PLAYER("Black selected for DCP %1", to_string(next));
844 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
850 auto piece = weak_piece.lock ();
855 if (!piece->content->video->use()) {
859 auto const three_d = _film->three_d();
862 if (video.eyes == Eyes::LEFT) {
863 /* Use left-eye images for both eyes... */
864 video.eyes = Eyes::BOTH;
865 } else if (video.eyes == Eyes::RIGHT) {
866 /* ...and discard the right */
871 FrameRateChange frc (_film, piece->content);
873 /* Time of the frame we just received within the DCP */
874 auto const time = content_time_to_dcp(piece, video.time);
875 LOG_DEBUG_PLAYER("Received video frame %1 %2 eyes %3", to_string(video.time), to_string(time), static_cast<int>(video.eyes));
877 if (time < piece->content->position()) {
881 if (piece->ignore_video && piece->ignore_video->contains(time)) {
885 if (!_next_video_time) {
886 _next_video_time = time.round(_film->video_frame_rate());
889 auto const content_video = piece->content->video;
891 std::make_shared<PlayerVideo>(
893 content_video->actual_crop(),
894 content_video->fade(_film, video.time),
896 content_video->scaled_size(_film->frame_size()),
897 _video_container_size,
899 content_video->pixel_quanta()
901 _video_container_size,
904 content_video->colour_conversion(),
905 content_video->range(),
911 piece->content->end(_film)
917 Player::use_video(shared_ptr<PlayerVideo> pv, DCPTime time, DCPTime end)
919 _last_video[pv->eyes()] = { pv, time };
920 if (pv->eyes() != Eyes::LEFT) {
921 emit_video_until(std::min(time + one_video_frame() / 2, end));
927 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
933 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
935 auto piece = weak_piece.lock ();
940 auto content = piece->content->audio;
941 DCPOMATIC_ASSERT (content);
943 int const rfr = content->resampled_frame_rate (_film);
945 /* Compute time in the DCP */
946 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
947 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
949 /* And the end of this block in the DCP */
950 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
952 /* Remove anything that comes before the start or after the end of the content */
953 if (time < piece->content->position()) {
954 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
956 /* This audio is entirely discarded */
959 content_audio.audio = cut.first;
961 } else if (time > piece->content->end(_film)) {
964 } else if (end > piece->content->end(_film)) {
965 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
966 if (remaining_frames == 0) {
969 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
972 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
976 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
977 if (content->gain() != 0 || !fade_coeffs.empty()) {
978 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
979 if (!fade_coeffs.empty()) {
980 /* Apply both fade and gain */
981 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
982 auto const channels = gain_buffers->channels();
983 auto const frames = fade_coeffs.size();
984 auto data = gain_buffers->data();
985 auto const gain = db_to_linear (content->gain());
986 for (auto channel = 0; channel < channels; ++channel) {
987 for (auto frame = 0U; frame < frames; ++frame) {
988 data[channel][frame] *= gain * fade_coeffs[frame];
992 /* Just apply gain */
993 gain_buffers->apply_gain (content->gain());
995 content_audio.audio = gain_buffers;
1000 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
1004 if (_audio_processor) {
1005 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1010 _audio_merger.push (content_audio.audio, time);
1011 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1012 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1017 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1023 auto piece = weak_piece.lock ();
1024 auto content = weak_content.lock ();
1025 if (!piece || !content) {
1030 for (auto& sub: subtitle.subs)
1032 /* Apply content's subtitle offsets */
1033 sub.rectangle.x += content->x_offset ();
1034 sub.rectangle.y += content->y_offset ();
1036 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1037 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1038 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1040 /* Apply content's subtitle scale */
1041 sub.rectangle.width *= content->x_scale ();
1042 sub.rectangle.height *= content->y_scale ();
1044 auto image = sub.image;
1046 /* We will scale the subtitle up to fit _video_container_size */
1047 int const width = sub.rectangle.width * _video_container_size.load().width;
1048 int const height = sub.rectangle.height * _video_container_size.load().height;
1049 if (width == 0 || height == 0) {
1053 dcp::Size scaled_size (width, height);
1054 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1057 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1058 _active_texts[content->type()].add_from(weak_content, ps, from);
1063 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1069 auto piece = weak_piece.lock ();
1070 auto content = weak_content.lock ();
1071 if (!piece || !content) {
1076 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1078 if (from > piece->content->end(_film)) {
1082 for (auto s: subtitle.subs) {
1083 s.set_h_position (s.h_position() + content->x_offset());
1084 s.set_v_position (s.v_position() + content->y_offset());
1085 float const xs = content->x_scale();
1086 float const ys = content->y_scale();
1087 float size = s.size();
1089 /* Adjust size to express the common part of the scaling;
1090 e.g. if xs = ys = 0.5 we scale size by 2.
1092 if (xs > 1e-5 && ys > 1e-5) {
1093 size *= 1 / min (1 / xs, 1 / ys);
1097 /* Then express aspect ratio changes */
1098 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1099 s.set_aspect_adjust (xs / ys);
1102 s.set_in (dcp::Time(from.seconds(), 1000));
1103 ps.string.push_back (s);
1106 _active_texts[content->type()].add_from(weak_content, ps, from);
1111 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1117 auto content = weak_content.lock ();
1122 if (!_active_texts[content->type()].have(weak_content)) {
1126 auto piece = weak_piece.lock ();
1131 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1133 if (dcp_to > piece->content->end(_film)) {
1137 auto from = _active_texts[content->type()].add_to(weak_content, dcp_to);
1139 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1140 if (content->use() && !always && !content->burn()) {
1141 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1147 Player::seek (DCPTime time, bool accurate)
1149 boost::mutex::scoped_lock lm (_mutex);
1150 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1153 /* We can't seek in this state */
1158 _shuffler->clear ();
1163 if (_audio_processor) {
1164 _audio_processor->flush ();
1167 _audio_merger.clear ();
1168 std::for_each(_active_texts.begin(), _active_texts.end(), [](ActiveText& a) { a.clear(); });
1170 for (auto i: _pieces) {
1171 if (time < i->content->position()) {
1172 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1173 we must seek this (following) content accurately, otherwise when we come to the end of the current
1174 content we may not start right at the beginning of the next, causing a gap (if the next content has
1175 been trimmed to a point between keyframes, or something).
1177 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1179 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1180 /* During; seek to position */
1181 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1184 /* After; this piece is done */
1190 _next_video_time = time;
1191 _next_audio_time = time;
1193 _next_video_time = boost::none;
1194 _next_audio_time = boost::none;
1197 _black.set_position (time);
1198 _silent.set_position (time);
1200 _last_video[Eyes::LEFT] = {};
1201 _last_video[Eyes::RIGHT] = {};
1202 _last_video[Eyes::BOTH] = {};
1206 Player::emit_video(shared_ptr<PlayerVideo> pv, DCPTime time)
1208 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1209 std::for_each(_active_texts.begin(), _active_texts.end(), [time](ActiveText& a) { a.clear_before(time); });
1212 auto subtitles = open_subtitles_for_frame (time);
1214 pv->set_text (subtitles.get ());
1222 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1224 /* Log if the assert below is about to fail */
1225 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1226 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1229 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1230 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1231 Audio (data, time, _film->audio_frame_rate());
1232 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1237 Player::fill_audio (DCPTimePeriod period)
1239 if (period.from == period.to) {
1243 DCPOMATIC_ASSERT (period.from < period.to);
1245 DCPTime t = period.from;
1246 while (t < period.to) {
1247 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1248 Frame const samples = block.frames_round(_film->audio_frame_rate());
1250 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1251 silence->make_silent ();
1252 emit_audio (silence, t);
1260 Player::one_video_frame () const
1262 return DCPTime::from_frames (1, _film->video_frame_rate ());
1266 pair<shared_ptr<AudioBuffers>, DCPTime>
1267 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1269 auto const discard_time = discard_to - time;
1270 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1271 auto remaining_frames = audio->frames() - discard_frames;
1272 if (remaining_frames <= 0) {
1273 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1275 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1276 return make_pair(cut, time + discard_time);
1281 Player::set_dcp_decode_reduction (optional<int> reduction)
1283 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1285 if (reduction == _dcp_decode_reduction.load()) {
1286 Change(ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1290 _dcp_decode_reduction = reduction;
1293 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1298 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t) const
1300 boost::mutex::scoped_lock lm (_mutex);
1302 for (auto i: _pieces) {
1303 if (i->content == content) {
1304 return content_time_to_dcp (i, t);
1308 /* We couldn't find this content; perhaps things are being changed over */
1313 optional<ContentTime>
1314 Player::dcp_to_content_time (shared_ptr<const Content> content, DCPTime t) const
1316 boost::mutex::scoped_lock lm (_mutex);
1318 for (auto i: _pieces) {
1319 if (i->content == content) {
1320 return dcp_to_content_time (i, t);
1324 /* We couldn't find this content; perhaps things are being changed over */
1329 shared_ptr<const Playlist>
1330 Player::playlist () const
1332 return _playlist ? _playlist : _film->playlist();
1337 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1343 auto piece = weak_piece.lock ();
1344 DCPOMATIC_ASSERT (piece);
1346 auto const vfr = _film->video_frame_rate();
1348 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1349 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1353 Atmos (data.data, dcp_time, data.metadata);