2 Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 #include "atmos_decoder.h"
23 #include "audio_buffers.h"
24 #include "audio_content.h"
25 #include "audio_decoder.h"
26 #include "audio_processor.h"
27 #include "compose.hpp"
29 #include "content_audio.h"
30 #include "content_video.h"
31 #include "dcp_content.h"
32 #include "dcp_decoder.h"
33 #include "dcpomatic_log.h"
35 #include "decoder_factory.h"
36 #include "ffmpeg_content.h"
38 #include "frame_rate_change.h"
40 #include "image_decoder.h"
43 #include "maths_util.h"
46 #include "player_video.h"
49 #include "raw_image_proxy.h"
50 #include "referenced_reel_asset.h"
51 #include "render_text.h"
53 #include "text_content.h"
54 #include "text_decoder.h"
56 #include "video_decoder.h"
58 #include <dcp/reel_closed_caption_asset.h>
59 #include <dcp/reel_picture_asset.h>
60 #include <dcp/reel_sound_asset.h>
61 #include <dcp/reel_subtitle_asset.h>
71 using std::dynamic_pointer_cast;
74 using std::make_shared;
75 using std::make_shared;
80 using std::shared_ptr;
83 using boost::optional;
84 using boost::scoped_ptr;
85 #if BOOST_VERSION >= 106100
86 using namespace boost::placeholders;
88 using namespace dcpomatic;
91 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
92 int const PlayerProperty::PLAYLIST = 701;
93 int const PlayerProperty::FILM_CONTAINER = 702;
94 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
95 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
96 int const PlayerProperty::PLAYBACK_LENGTH = 705;
99 Player::Player (shared_ptr<const Film> film, Image::Alignment subtitle_alignment)
102 , _ignore_video(false)
103 , _ignore_audio(false)
104 , _ignore_text(false)
105 , _always_burn_open_subtitles(false)
106 , _tolerant (film->tolerant())
107 , _audio_merger (_film->audio_frame_rate())
108 , _subtitle_alignment (subtitle_alignment)
114 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist_)
116 , _playlist (playlist_)
118 , _ignore_video(false)
119 , _ignore_audio(false)
120 , _ignore_text(false)
121 , _always_burn_open_subtitles(false)
122 , _tolerant (film->tolerant())
123 , _audio_merger (_film->audio_frame_rate())
132 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
133 /* The butler must hear about this first, so since we are proxying this through to the butler we must
136 _playlist_change_connection = playlist()->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
137 _playlist_content_change_connection = playlist()->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
138 set_video_container_size (_film->frame_size ());
140 film_change (ChangeType::DONE, Film::Property::AUDIO_PROCESSOR);
143 seek (DCPTime (), true);
148 Player::setup_pieces ()
150 boost::mutex::scoped_lock lm (_mutex);
151 setup_pieces_unlocked ();
156 have_video (shared_ptr<const Content> content)
158 return static_cast<bool>(content->video) && content->video->use() && content->can_be_played();
163 have_audio (shared_ptr<const Content> content)
165 return static_cast<bool>(content->audio) && content->can_be_played();
170 Player::setup_pieces_unlocked ()
172 _playback_length = _playlist ? _playlist->length(_film) : _film->length();
174 auto old_pieces = _pieces;
177 auto playlist_content = playlist()->content();
178 bool const have_threed = std::any_of(
179 playlist_content.begin(),
180 playlist_content.end(),
181 [](shared_ptr<const Content> c) {
182 return c->video && (c->video->frame_type() == VideoFrameType::THREE_D_LEFT || c->video->frame_type() == VideoFrameType::THREE_D_RIGHT);
187 _shuffler.reset(new Shuffler());
188 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
191 for (auto i: playlist()->content()) {
193 if (!i->paths_valid ()) {
197 if (_ignore_video && _ignore_audio && i->text.empty()) {
198 /* We're only interested in text and this content has none */
202 shared_ptr<Decoder> old_decoder;
203 for (auto j: old_pieces) {
204 if (j->content == i) {
205 old_decoder = j->decoder;
210 auto decoder = decoder_factory (_film, i, _fast, _tolerant, old_decoder);
211 DCPOMATIC_ASSERT (decoder);
213 FrameRateChange frc (_film, i);
215 if (decoder->video && _ignore_video) {
216 decoder->video->set_ignore (true);
219 if (decoder->audio && _ignore_audio) {
220 decoder->audio->set_ignore (true);
224 for (auto i: decoder->text) {
225 i->set_ignore (true);
229 auto dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
231 dcp->set_decode_referenced (_play_referenced);
232 if (_play_referenced) {
233 dcp->set_forced_reduction (_dcp_decode_reduction);
237 auto piece = make_shared<Piece>(i, decoder, frc);
238 _pieces.push_back (piece);
240 if (decoder->video) {
242 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
243 decoder->video->Data.connect (bind(&Shuffler::video, _shuffler.get(), weak_ptr<Piece>(piece), _1));
245 decoder->video->Data.connect (bind(&Player::video, this, weak_ptr<Piece>(piece), _1));
249 if (decoder->audio) {
250 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
253 auto j = decoder->text.begin();
255 while (j != decoder->text.end()) {
256 (*j)->BitmapStart.connect (
257 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
259 (*j)->PlainStart.connect (
260 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
263 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
269 if (decoder->atmos) {
270 decoder->atmos->Data.connect (bind(&Player::atmos, this, weak_ptr<Piece>(piece), _1));
274 _stream_states.clear ();
275 for (auto i: _pieces) {
276 if (i->content->audio) {
277 for (auto j: i->content->audio->streams()) {
278 _stream_states[j] = StreamState (i, i->content->position ());
283 auto ignore_overlap = [](shared_ptr<VideoContent> v) {
284 return v && v->use() && v->frame_type() != VideoFrameType::THREE_D_LEFT && v->frame_type() != VideoFrameType::THREE_D_RIGHT;
287 for (auto i = _pieces.begin(); i != _pieces.end(); ++i) {
288 if (ignore_overlap((*i)->content->video)) {
289 /* Look for content later in the content list with in-use video that overlaps this */
290 auto const period = DCPTimePeriod((*i)->content->position(), (*i)->content->end(_film));
291 for (auto j = std::next(i); j != _pieces.end(); ++j) {
292 if ((*j)->content->video && ignore_overlap((*j)->content->video)) {
293 (*i)->ignore_video = DCPTimePeriod((*j)->content->position(), (*j)->content->end(_film)).overlap(period);
299 _black = Empty (_film, playlist(), bind(&have_video, _1), _playback_length);
300 _silent = Empty (_film, playlist(), bind(&have_audio, _1), _playback_length);
302 _next_video_time = boost::none;
303 _next_video_eyes = Eyes::BOTH;
304 _next_audio_time = boost::none;
309 Player::playlist_content_change (ChangeType type, int property, bool frequent)
311 if (property == VideoContentProperty::CROP) {
312 if (type == ChangeType::DONE) {
313 auto const vcs = video_container_size();
314 boost::mutex::scoped_lock lm (_mutex);
315 for (auto const& i: _delay) {
316 i.first->reset_metadata (_film, vcs);
320 if (type == ChangeType::PENDING) {
321 /* The player content is probably about to change, so we can't carry on
322 until that has happened and we've rebuilt our pieces. Stop pass()
323 and seek() from working until then.
326 } else if (type == ChangeType::DONE) {
327 /* A change in our content has gone through. Re-build our pieces. */
330 } else if (type == ChangeType::CANCELLED) {
335 Change (type, property, frequent);
340 Player::set_video_container_size (dcp::Size s)
342 Change (ChangeType::PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
345 boost::mutex::scoped_lock lm (_mutex);
347 if (s == _video_container_size) {
349 Change (ChangeType::CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
353 _video_container_size = s;
355 _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, _video_container_size, Image::Alignment::PADDED);
356 _black_image->make_black ();
359 Change (ChangeType::DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
364 Player::playlist_change (ChangeType type)
366 if (type == ChangeType::DONE) {
369 Change (type, PlayerProperty::PLAYLIST, false);
374 Player::film_change (ChangeType type, Film::Property p)
376 /* Here we should notice Film properties that affect our output, and
377 alert listeners that our output now would be different to how it was
378 last time we were run.
381 if (p == Film::Property::CONTAINER) {
382 Change (type, PlayerProperty::FILM_CONTAINER, false);
383 } else if (p == Film::Property::VIDEO_FRAME_RATE) {
384 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
385 so we need new pieces here.
387 if (type == ChangeType::DONE) {
390 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
391 } else if (p == Film::Property::AUDIO_PROCESSOR) {
392 if (type == ChangeType::DONE && _film->audio_processor ()) {
393 boost::mutex::scoped_lock lm (_mutex);
394 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
396 } else if (p == Film::Property::AUDIO_CHANNELS) {
397 if (type == ChangeType::DONE) {
398 boost::mutex::scoped_lock lm (_mutex);
399 _audio_merger.clear ();
405 shared_ptr<PlayerVideo>
406 Player::black_player_video_frame (Eyes eyes) const
408 return std::make_shared<PlayerVideo> (
409 std::make_shared<const RawImageProxy>(_black_image),
412 _video_container_size,
413 _video_container_size,
416 PresetColourConversion::all().front().conversion,
418 std::weak_ptr<Content>(),
419 boost::optional<Frame>(),
426 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
428 auto s = t - piece->content->position ();
429 s = min (piece->content->length_after_trim(_film), s);
430 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
432 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
433 then convert that ContentTime to frames at the content's rate. However this fails for
434 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
435 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
437 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
439 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
444 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
446 /* See comment in dcp_to_content_video */
447 auto const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
448 return d + piece->content->position();
453 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
455 auto s = t - piece->content->position ();
456 s = min (piece->content->length_after_trim(_film), s);
457 /* See notes in dcp_to_content_video */
458 return max (DCPTime(), DCPTime(piece->content->trim_start(), piece->frc) + s).frames_floor(_film->audio_frame_rate());
463 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
465 /* See comment in dcp_to_content_video */
466 return DCPTime::from_frames (f, _film->audio_frame_rate())
467 - DCPTime (piece->content->trim_start(), piece->frc)
468 + piece->content->position();
473 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
475 auto s = t - piece->content->position ();
476 s = min (piece->content->length_after_trim(_film), s);
477 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
482 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
484 return max (DCPTime(), DCPTime(t - piece->content->trim_start(), piece->frc) + piece->content->position());
488 vector<shared_ptr<Font>>
489 Player::get_subtitle_fonts ()
491 boost::mutex::scoped_lock lm (_mutex);
493 vector<shared_ptr<Font>> fonts;
494 for (auto piece: _pieces) {
495 for (auto text: piece->content->text) {
496 auto text_fonts = text->fonts();
497 copy (text_fonts.begin(), text_fonts.end(), back_inserter(fonts));
505 /** Set this player never to produce any video data */
507 Player::set_ignore_video ()
509 _ignore_video = true;
515 Player::set_ignore_audio ()
517 _ignore_audio = true;
523 Player::set_ignore_text ()
530 /** Set the player to always burn open texts into the image regardless of the content settings */
532 Player::set_always_burn_open_subtitles ()
534 _always_burn_open_subtitles = true;
538 /** Sets up the player to be faster, possibly at the expense of quality */
542 boost::mutex::scoped_lock lm (_mutex);
544 setup_pieces_unlocked ();
549 Player::set_play_referenced ()
551 boost::mutex::scoped_lock lm (_mutex);
552 _play_referenced = true;
553 setup_pieces_unlocked ();
558 maybe_add_asset (list<ReferencedReelAsset>& a, shared_ptr<dcp::ReelAsset> r, Frame reel_trim_start, Frame reel_trim_end, DCPTime from, int const ffr)
560 DCPOMATIC_ASSERT (r);
561 r->set_entry_point (r->entry_point().get_value_or(0) + reel_trim_start);
562 r->set_duration (r->actual_duration() - reel_trim_start - reel_trim_end);
563 if (r->actual_duration() > 0) {
565 ReferencedReelAsset(r, DCPTimePeriod(from, from + DCPTime::from_frames(r->actual_duration(), ffr)))
571 list<ReferencedReelAsset>
572 Player::get_reel_assets ()
574 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
576 list<ReferencedReelAsset> reel_assets;
578 for (auto content: playlist()->content()) {
579 auto dcp = dynamic_pointer_cast<DCPContent>(content);
584 if (!dcp->reference_video() && !dcp->reference_audio() && !dcp->reference_text(TextType::OPEN_SUBTITLE) && !dcp->reference_text(TextType::CLOSED_CAPTION)) {
588 scoped_ptr<DCPDecoder> decoder;
590 decoder.reset (new DCPDecoder(_film, dcp, false, false, shared_ptr<DCPDecoder>()));
595 auto const frame_rate = _film->video_frame_rate();
596 DCPOMATIC_ASSERT (dcp->video_frame_rate());
597 /* We should only be referencing if the DCP rate is the same as the film rate */
598 DCPOMATIC_ASSERT (std::round(dcp->video_frame_rate().get()) == frame_rate);
600 Frame const trim_start = dcp->trim_start().frames_round(frame_rate);
601 Frame const trim_end = dcp->trim_end().frames_round(frame_rate);
603 /* position in the asset from the start */
604 int64_t offset_from_start = 0;
605 /* position i the asset from the end */
606 int64_t offset_from_end = 0;
607 for (auto reel: decoder->reels()) {
608 /* Assume that main picture duration is the length of the reel */
609 offset_from_end += reel->main_picture()->actual_duration();
612 for (auto reel: decoder->reels()) {
614 /* Assume that main picture duration is the length of the reel */
615 int64_t const reel_duration = reel->main_picture()->actual_duration();
617 /* See doc/design/trim_reels.svg */
618 Frame const reel_trim_start = min(reel_duration, max(int64_t(0), trim_start - offset_from_start));
619 Frame const reel_trim_end = min(reel_duration, max(int64_t(0), reel_duration - (offset_from_end - trim_end)));
621 auto const from = content->position() + std::max(DCPTime(), DCPTime::from_frames(offset_from_start - trim_start, frame_rate));
622 if (dcp->reference_video()) {
623 maybe_add_asset (reel_assets, reel->main_picture(), reel_trim_start, reel_trim_end, from, frame_rate);
626 if (dcp->reference_audio()) {
627 maybe_add_asset (reel_assets, reel->main_sound(), reel_trim_start, reel_trim_end, from, frame_rate);
630 if (dcp->reference_text(TextType::OPEN_SUBTITLE)) {
631 maybe_add_asset (reel_assets, reel->main_subtitle(), reel_trim_start, reel_trim_end, from, frame_rate);
634 if (dcp->reference_text(TextType::CLOSED_CAPTION)) {
635 for (auto caption: reel->closed_captions()) {
636 maybe_add_asset (reel_assets, caption, reel_trim_start, reel_trim_end, from, frame_rate);
640 offset_from_start += reel_duration;
641 offset_from_end -= reel_duration;
652 boost::mutex::scoped_lock lm (_mutex);
655 /* We can't pass in this state */
656 LOG_DEBUG_PLAYER_NC ("Player is suspended");
660 if (_playback_length == DCPTime()) {
661 /* Special; just give one black frame */
662 emit_video (black_player_video_frame(Eyes::BOTH), DCPTime());
666 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
668 shared_ptr<Piece> earliest_content;
669 optional<DCPTime> earliest_time;
671 for (auto i: _pieces) {
676 auto const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
677 if (t > i->content->end(_film)) {
681 /* Given two choices at the same time, pick the one with texts so we see it before
684 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
686 earliest_content = i;
700 if (earliest_content) {
704 if (!_black.done() && !_ignore_video && (!earliest_time || _black.position() < *earliest_time)) {
705 earliest_time = _black.position ();
709 if (!_silent.done() && !_ignore_audio && (!earliest_time || _silent.position() < *earliest_time)) {
710 earliest_time = _silent.position ();
717 LOG_DEBUG_PLAYER ("Calling pass() on %1", earliest_content->content->path(0));
718 earliest_content->done = earliest_content->decoder->pass ();
719 auto dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
720 if (dcp && !_play_referenced && dcp->reference_audio()) {
721 /* We are skipping some referenced DCP audio content, so we need to update _next_audio_time
722 to `hide' the fact that no audio was emitted during the referenced DCP (though
723 we need to behave as though it was).
725 _next_audio_time = dcp->end (_film);
730 LOG_DEBUG_PLAYER ("Emit black for gap at %1", to_string(_black.position()));
731 emit_video (black_player_video_frame(Eyes::BOTH), _black.position());
732 _black.set_position (_black.position() + one_video_frame());
736 LOG_DEBUG_PLAYER ("Emit silence for gap at %1", to_string(_silent.position()));
737 DCPTimePeriod period (_silent.period_at_position());
738 if (_next_audio_time) {
739 /* Sometimes the thing that happened last finishes fractionally before
740 or after this silence. Bodge the start time of the silence to fix it.
741 I think this is nothing to worry about since we will just add or
742 remove a little silence at the end of some content.
744 int64_t const error = labs(period.from.get() - _next_audio_time->get());
745 /* Let's not worry about less than a frame at 24fps */
746 int64_t const too_much_error = DCPTime::from_frames(1, 24).get();
747 if (error >= too_much_error) {
748 _film->log()->log(String::compose("Silence starting before or after last audio by %1", error), LogEntry::TYPE_ERROR);
750 DCPOMATIC_ASSERT (error < too_much_error);
751 period.from = *_next_audio_time;
753 if (period.duration() > one_video_frame()) {
754 period.to = period.from + one_video_frame();
757 _silent.set_position (period.to);
765 /* Emit any audio that is ready */
767 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
768 of our streams, or the position of the _silent. First, though we choose only streams that are less than
769 ignore_streams_behind seconds behind the furthest ahead (we assume that if a stream has fallen that far
770 behind it has finished). This is so that we don't withhold audio indefinitely awaiting data from a stream
771 that will never come, causing bugs like #2101.
773 constexpr int ignore_streams_behind = 5;
775 using state_pair = std::pair<AudioStreamPtr, StreamState>;
777 /* Find the 'leading' stream (i.e. the one that pushed data most recently) */
778 auto latest_last_push_end = std::max_element(
779 _stream_states.begin(),
780 _stream_states.end(),
781 [](state_pair const& a, state_pair const& b) { return a.second.last_push_end < b.second.last_push_end; }
784 if (latest_last_push_end != _stream_states.end()) {
785 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));
788 /* Now make a list of those streams that are less than ignore_streams_behind behind the leader */
789 std::map<AudioStreamPtr, StreamState> alive_stream_states;
790 for (auto const& i: _stream_states) {
791 if ((latest_last_push_end->second.last_push_end - i.second.last_push_end) < dcpomatic::DCPTime::from_seconds(ignore_streams_behind)) {
792 alive_stream_states.insert(i);
794 LOG_DEBUG_PLAYER("Ignoring stream %1 because it is too far behind", i.second.piece->content->path(0));
798 auto pull_to = _playback_length;
799 for (auto const& i: alive_stream_states) {
800 if (!i.second.piece->done && i.second.last_push_end < pull_to) {
801 pull_to = i.second.last_push_end;
804 if (!_silent.done() && _silent.position() < pull_to) {
805 pull_to = _silent.position();
808 LOG_DEBUG_PLAYER("Emitting audio up to %1", to_string(pull_to));
809 auto audio = _audio_merger.pull (pull_to);
810 for (auto i = audio.begin(); i != audio.end(); ++i) {
811 if (_next_audio_time && i->second < *_next_audio_time) {
812 /* This new data comes before the last we emitted (or the last seek); discard it */
813 auto cut = discard_audio (i->first, i->second, *_next_audio_time);
818 } else if (_next_audio_time && i->second > *_next_audio_time) {
819 /* There's a gap between this data and the last we emitted; fill with silence */
820 fill_audio (DCPTimePeriod (*_next_audio_time, i->second));
823 emit_audio (i->first, i->second);
830 for (auto const& i: _delay) {
831 do_emit_video(i.first, i.second);
834 /* Perhaps we should have Empty entries for both eyes in the 3D case (somehow).
835 * However, if we have L and R video files, and one is shorter than the other,
836 * the fill code in ::video mostly takes care of filling in the gaps.
837 * However, since it fills at the point when it knows there is more video coming
838 * at time t (so it should fill any gap up to t) it can't do anything right at the
839 * end. This is particularly bad news if the last frame emitted is a LEFT
840 * eye, as the MXF writer will complain about the 3D sequence being wrong.
841 * Here's a hack to workaround that particular case.
843 if (_next_video_eyes && _next_video_time && *_next_video_eyes == Eyes::RIGHT) {
844 do_emit_video (black_player_video_frame(Eyes::RIGHT), *_next_video_time);
852 /** @return Open subtitles for the frame at the given time, converted to images */
853 optional<PositionImage>
854 Player::open_subtitles_for_frame (DCPTime time) const
856 list<PositionImage> captions;
857 int const vfr = _film->video_frame_rate();
861 _active_texts[static_cast<int>(TextType::OPEN_SUBTITLE)].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
864 /* Bitmap subtitles */
865 for (auto i: j.bitmap) {
870 /* i.image will already have been scaled to fit _video_container_size */
871 dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height);
877 lrint(_video_container_size.width * i.rectangle.x),
878 lrint(_video_container_size.height * i.rectangle.y)
884 /* String subtitles (rendered to an image) */
885 if (!j.string.empty()) {
886 auto s = render_text(j.string, _video_container_size, time, vfr);
887 copy (s.begin(), s.end(), back_inserter (captions));
891 if (captions.empty()) {
895 return merge (captions, _subtitle_alignment);
900 Player::video (weak_ptr<Piece> weak_piece, ContentVideo video)
906 auto piece = weak_piece.lock ();
911 if (!piece->content->video->use()) {
915 FrameRateChange frc (_film, piece->content);
916 if (frc.skip && (video.frame % 2) == 1) {
920 /* Time of the first frame we will emit */
921 DCPTime const time = content_video_to_dcp (piece, video.frame);
922 LOG_DEBUG_PLAYER("Received video frame %1 at %2", video.frame, to_string(time));
924 /* Discard if it's before the content's period or the last accurate seek. We can't discard
925 if it's after the content's period here as in that case we still need to fill any gap between
926 `now' and the end of the content's period.
928 if (time < piece->content->position() || (_next_video_time && time < *_next_video_time)) {
932 if (piece->ignore_video && piece->ignore_video->contains(time)) {
936 /* Fill gaps that we discover now that we have some video which needs to be emitted.
937 This is where we need to fill to.
939 DCPTime fill_to = min (time, piece->content->end(_film));
941 if (_next_video_time) {
942 DCPTime fill_from = max (*_next_video_time, piece->content->position());
944 /* Fill if we have more than half a frame to do */
945 if ((fill_to - fill_from) > one_video_frame() / 2) {
946 auto last = _last_video.find (weak_piece);
947 if (_film->three_d()) {
948 auto fill_to_eyes = video.eyes;
949 if (fill_to_eyes == Eyes::BOTH) {
950 fill_to_eyes = Eyes::LEFT;
952 if (fill_to == piece->content->end(_film)) {
953 /* Don't fill after the end of the content */
954 fill_to_eyes = Eyes::LEFT;
957 auto eyes = _next_video_eyes.get_value_or(Eyes::LEFT);
958 if (eyes == Eyes::BOTH) {
961 while (j < fill_to || eyes != fill_to_eyes) {
962 if (last != _last_video.end()) {
963 LOG_DEBUG_PLAYER("Fill using last video at %1 in 3D mode", to_string(j));
964 auto copy = last->second->shallow_copy();
965 copy->set_eyes (eyes);
966 emit_video (copy, j);
968 LOG_DEBUG_PLAYER("Fill using black at %1 in 3D mode", to_string(j));
969 emit_video (black_player_video_frame(eyes), j);
971 if (eyes == Eyes::RIGHT) {
972 j += one_video_frame();
974 eyes = increment_eyes (eyes);
977 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
978 if (last != _last_video.end()) {
979 emit_video (last->second, j);
981 emit_video (black_player_video_frame(Eyes::BOTH), j);
988 auto const content_video = piece->content->video;
990 _last_video[weak_piece] = std::make_shared<PlayerVideo>(
992 content_video->actual_crop(),
993 content_video->fade (_film, video.frame),
995 content_video->scaled_size(_film->frame_size()),
996 _video_container_size,
998 content_video->pixel_quanta()
1000 _video_container_size,
1003 content_video->colour_conversion(),
1004 content_video->range(),
1011 for (int i = 0; i < frc.repeat; ++i) {
1012 if (t < piece->content->end(_film)) {
1013 emit_video (_last_video[weak_piece], t);
1015 t += one_video_frame ();
1021 Player::audio (weak_ptr<Piece> weak_piece, AudioStreamPtr stream, ContentAudio content_audio)
1027 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
1029 auto piece = weak_piece.lock ();
1034 auto content = piece->content->audio;
1035 DCPOMATIC_ASSERT (content);
1037 int const rfr = content->resampled_frame_rate (_film);
1039 /* Compute time in the DCP */
1040 auto time = resampled_audio_to_dcp (piece, content_audio.frame);
1041 LOG_DEBUG_PLAYER("Received audio frame %1 at %2", content_audio.frame, to_string(time));
1043 /* And the end of this block in the DCP */
1044 auto end = time + DCPTime::from_frames(content_audio.audio->frames(), rfr);
1046 /* Remove anything that comes before the start or after the end of the content */
1047 if (time < piece->content->position()) {
1048 auto cut = discard_audio (content_audio.audio, time, piece->content->position());
1050 /* This audio is entirely discarded */
1053 content_audio.audio = cut.first;
1055 } else if (time > piece->content->end(_film)) {
1056 /* Discard it all */
1058 } else if (end > piece->content->end(_film)) {
1059 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(rfr);
1060 if (remaining_frames == 0) {
1063 content_audio.audio = make_shared<AudioBuffers>(content_audio.audio, remaining_frames, 0);
1066 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
1070 auto const fade_coeffs = content->fade (stream, content_audio.frame, content_audio.audio->frames(), rfr);
1071 if (content->gain() != 0 || !fade_coeffs.empty()) {
1072 auto gain_buffers = make_shared<AudioBuffers>(content_audio.audio);
1073 if (!fade_coeffs.empty()) {
1074 /* Apply both fade and gain */
1075 DCPOMATIC_ASSERT (fade_coeffs.size() == static_cast<size_t>(gain_buffers->frames()));
1076 auto const channels = gain_buffers->channels();
1077 auto const frames = fade_coeffs.size();
1078 auto data = gain_buffers->data();
1079 auto const gain = db_to_linear (content->gain());
1080 for (auto channel = 0; channel < channels; ++channel) {
1081 for (auto frame = 0U; frame < frames; ++frame) {
1082 data[channel][frame] *= gain * fade_coeffs[frame];
1086 /* Just apply gain */
1087 gain_buffers->apply_gain (content->gain());
1089 content_audio.audio = gain_buffers;
1094 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
1098 if (_audio_processor) {
1099 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
1104 _audio_merger.push (content_audio.audio, time);
1105 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
1106 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
1111 Player::bitmap_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentBitmapText subtitle)
1117 auto piece = weak_piece.lock ();
1118 auto content = weak_content.lock ();
1119 if (!piece || !content) {
1124 for (auto& sub: subtitle.subs)
1126 /* Apply content's subtitle offsets */
1127 sub.rectangle.x += content->x_offset ();
1128 sub.rectangle.y += content->y_offset ();
1130 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
1131 sub.rectangle.x -= sub.rectangle.width * ((content->x_scale() - 1) / 2);
1132 sub.rectangle.y -= sub.rectangle.height * ((content->y_scale() - 1) / 2);
1134 /* Apply content's subtitle scale */
1135 sub.rectangle.width *= content->x_scale ();
1136 sub.rectangle.height *= content->y_scale ();
1138 auto image = sub.image;
1140 /* We will scale the subtitle up to fit _video_container_size */
1141 int const width = sub.rectangle.width * _video_container_size.width;
1142 int const height = sub.rectangle.height * _video_container_size.height;
1143 if (width == 0 || height == 0) {
1147 dcp::Size scaled_size (width, height);
1148 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUVToRGB::REC601, image->pixel_format(), Image::Alignment::PADDED, _fast), sub.rectangle));
1151 DCPTime from(content_time_to_dcp(piece, subtitle.from()));
1152 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1157 Player::plain_text_start (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentStringText subtitle)
1163 auto piece = weak_piece.lock ();
1164 auto content = weak_content.lock ();
1165 if (!piece || !content) {
1170 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
1172 if (from > piece->content->end(_film)) {
1176 for (auto s: subtitle.subs) {
1177 s.set_h_position (s.h_position() + content->x_offset());
1178 s.set_v_position (s.v_position() + content->y_offset());
1179 float const xs = content->x_scale();
1180 float const ys = content->y_scale();
1181 float size = s.size();
1183 /* Adjust size to express the common part of the scaling;
1184 e.g. if xs = ys = 0.5 we scale size by 2.
1186 if (xs > 1e-5 && ys > 1e-5) {
1187 size *= 1 / min (1 / xs, 1 / ys);
1191 /* Then express aspect ratio changes */
1192 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
1193 s.set_aspect_adjust (xs / ys);
1196 s.set_in (dcp::Time(from.seconds(), 1000));
1197 ps.string.push_back (s);
1200 _active_texts[static_cast<int>(content->type())].add_from(weak_content, ps, from);
1205 Player::subtitle_stop (weak_ptr<Piece> weak_piece, weak_ptr<const TextContent> weak_content, ContentTime to)
1211 auto content = weak_content.lock ();
1216 if (!_active_texts[static_cast<int>(content->type())].have(weak_content)) {
1220 auto piece = weak_piece.lock ();
1225 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1227 if (dcp_to > piece->content->end(_film)) {
1231 auto from = _active_texts[static_cast<int>(content->type())].add_to(weak_content, dcp_to);
1233 bool const always = (content->type() == TextType::OPEN_SUBTITLE && _always_burn_open_subtitles);
1234 if (content->use() && !always && !content->burn()) {
1235 Text (from.first, content->type(), content->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod(from.second, dcp_to));
1241 Player::seek (DCPTime time, bool accurate)
1243 boost::mutex::scoped_lock lm (_mutex);
1244 LOG_DEBUG_PLAYER("Seek to %1 (%2accurate)", to_string(time), accurate ? "" : "in");
1247 /* We can't seek in this state */
1252 _shuffler->clear ();
1257 if (_audio_processor) {
1258 _audio_processor->flush ();
1261 _audio_merger.clear ();
1262 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1263 _active_texts[i].clear ();
1266 for (auto i: _pieces) {
1267 if (time < i->content->position()) {
1268 /* Before; seek to the start of the content. Even if this request is for an inaccurate seek
1269 we must seek this (following) content accurately, otherwise when we come to the end of the current
1270 content we may not start right at the beginning of the next, causing a gap (if the next content has
1271 been trimmed to a point between keyframes, or something).
1273 i->decoder->seek (dcp_to_content_time (i, i->content->position()), true);
1275 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1276 /* During; seek to position */
1277 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1280 /* After; this piece is done */
1286 _next_video_time = time;
1287 _next_video_eyes = Eyes::LEFT;
1288 _next_audio_time = time;
1290 _next_video_time = boost::none;
1291 _next_video_eyes = boost::none;
1292 _next_audio_time = boost::none;
1295 _black.set_position (time);
1296 _silent.set_position (time);
1298 _last_video.clear ();
1303 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1305 if (!_film->three_d()) {
1306 if (pv->eyes() == Eyes::LEFT) {
1307 /* Use left-eye images for both eyes... */
1308 pv->set_eyes (Eyes::BOTH);
1309 } else if (pv->eyes() == Eyes::RIGHT) {
1310 /* ...and discard the right */
1315 /* We need a delay to give a little wiggle room to ensure that relevant subtitles arrive at the
1316 player before the video that requires them.
1318 _delay.push_back (make_pair (pv, time));
1320 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1321 _next_video_time = time + one_video_frame();
1323 _next_video_eyes = increment_eyes (pv->eyes());
1325 if (_delay.size() < 3) {
1329 auto to_do = _delay.front();
1331 do_emit_video (to_do.first, to_do.second);
1336 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1338 if (pv->eyes() == Eyes::BOTH || pv->eyes() == Eyes::RIGHT) {
1339 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
1340 _active_texts[i].clear_before (time);
1344 auto subtitles = open_subtitles_for_frame (time);
1346 pv->set_text (subtitles.get ());
1354 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1356 /* Log if the assert below is about to fail */
1357 if (_next_audio_time && labs(time.get() - _next_audio_time->get()) > 1) {
1358 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_next_audio_time)), LogEntry::TYPE_WARNING);
1361 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1362 DCPOMATIC_ASSERT (!_next_audio_time || labs(time.get() - _next_audio_time->get()) < 2);
1363 Audio (data, time, _film->audio_frame_rate());
1364 _next_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1369 Player::fill_audio (DCPTimePeriod period)
1371 if (period.from == period.to) {
1375 DCPOMATIC_ASSERT (period.from < period.to);
1377 DCPTime t = period.from;
1378 while (t < period.to) {
1379 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1380 Frame const samples = block.frames_round(_film->audio_frame_rate());
1382 auto silence = make_shared<AudioBuffers>(_film->audio_channels(), samples);
1383 silence->make_silent ();
1384 emit_audio (silence, t);
1392 Player::one_video_frame () const
1394 return DCPTime::from_frames (1, _film->video_frame_rate ());
1398 pair<shared_ptr<AudioBuffers>, DCPTime>
1399 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1401 auto const discard_time = discard_to - time;
1402 auto const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1403 auto remaining_frames = audio->frames() - discard_frames;
1404 if (remaining_frames <= 0) {
1405 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1407 auto cut = make_shared<AudioBuffers>(audio, remaining_frames, discard_frames);
1408 return make_pair(cut, time + discard_time);
1413 Player::set_dcp_decode_reduction (optional<int> reduction)
1415 Change (ChangeType::PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1418 boost::mutex::scoped_lock lm (_mutex);
1420 if (reduction == _dcp_decode_reduction) {
1422 Change (ChangeType::CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1426 _dcp_decode_reduction = reduction;
1427 setup_pieces_unlocked ();
1430 Change (ChangeType::DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1435 Player::content_time_to_dcp (shared_ptr<const Content> content, ContentTime t)
1437 boost::mutex::scoped_lock lm (_mutex);
1439 for (auto i: _pieces) {
1440 if (i->content == content) {
1441 return content_time_to_dcp (i, t);
1445 /* We couldn't find this content; perhaps things are being changed over */
1450 optional<ContentTime>
1451 Player::dcp_to_content_time (shared_ptr<const Content> content, DCPTime t)
1453 boost::mutex::scoped_lock lm (_mutex);
1455 for (auto i: _pieces) {
1456 if (i->content == content) {
1457 return dcp_to_content_time (i, t);
1461 /* We couldn't find this content; perhaps things are being changed over */
1466 shared_ptr<const Playlist>
1467 Player::playlist () const
1469 return _playlist ? _playlist : _film->playlist();
1474 Player::atmos (weak_ptr<Piece> weak_piece, ContentAtmos data)
1480 auto piece = weak_piece.lock ();
1481 DCPOMATIC_ASSERT (piece);
1483 auto const vfr = _film->video_frame_rate();
1485 DCPTime const dcp_time = DCPTime::from_frames(data.frame, vfr) - DCPTime(piece->content->trim_start(), FrameRateChange(vfr, vfr));
1486 if (dcp_time < piece->content->position() || dcp_time >= (piece->content->end(_film))) {
1490 Atmos (data.data, dcp_time, data.metadata);