2 Copyright (C) 2013-2018 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/>.
23 #include "audio_buffers.h"
24 #include "content_audio.h"
25 #include "dcp_content.h"
28 #include "raw_image_proxy.h"
31 #include "render_text.h"
33 #include "content_video.h"
34 #include "player_video.h"
35 #include "frame_rate_change.h"
36 #include "audio_processor.h"
38 #include "referenced_reel_asset.h"
39 #include "decoder_factory.h"
41 #include "video_decoder.h"
42 #include "audio_decoder.h"
43 #include "text_content.h"
44 #include "text_decoder.h"
45 #include "ffmpeg_content.h"
46 #include "audio_content.h"
47 #include "dcp_decoder.h"
48 #include "image_decoder.h"
49 #include "compose.hpp"
52 #include <dcp/reel_sound_asset.h>
53 #include <dcp/reel_subtitle_asset.h>
54 #include <dcp/reel_picture_asset.h>
55 #include <dcp/reel_closed_caption_asset.h>
56 #include <boost/foreach.hpp>
73 using boost::shared_ptr;
74 using boost::weak_ptr;
75 using boost::dynamic_pointer_cast;
76 using boost::optional;
77 using boost::scoped_ptr;
79 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
80 int const PlayerProperty::PLAYLIST = 701;
81 int const PlayerProperty::FILM_CONTAINER = 702;
82 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
83 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
85 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
87 , _playlist (playlist)
89 , _ignore_video (false)
90 , _ignore_audio (false)
91 , _ignore_text (false)
92 , _always_burn_open_subtitles (false)
94 , _play_referenced (false)
95 , _audio_merger (_film->audio_frame_rate())
98 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
99 /* The butler must hear about this first, so since we are proxying this through to the butler we must
102 _playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front);
103 _playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
104 set_video_container_size (_film->frame_size ());
106 film_change (CHANGE_TYPE_DONE, Film::AUDIO_PROCESSOR);
109 seek (DCPTime (), true);
118 Player::setup_pieces ()
120 boost::mutex::scoped_lock lm (_mutex);
121 setup_pieces_unlocked ();
125 have_video (shared_ptr<Piece> piece)
127 return piece->decoder && piece->decoder->video;
131 have_audio (shared_ptr<Piece> piece)
133 return piece->decoder && piece->decoder->audio;
137 Player::setup_pieces_unlocked ()
142 _shuffler = new Shuffler();
143 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
145 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
147 if (!i->paths_valid ()) {
151 if (_ignore_video && _ignore_audio && i->text.empty()) {
152 /* We're only interested in text and this content has none */
156 shared_ptr<Decoder> decoder = decoder_factory (_film, i, _fast);
157 FrameRateChange frc (_film, i);
160 /* Not something that we can decode; e.g. Atmos content */
164 if (decoder->video && _ignore_video) {
165 decoder->video->set_ignore (true);
168 if (decoder->audio && _ignore_audio) {
169 decoder->audio->set_ignore (true);
173 BOOST_FOREACH (shared_ptr<TextDecoder> i, decoder->text) {
174 i->set_ignore (true);
178 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
180 dcp->set_decode_referenced (_play_referenced);
181 if (_play_referenced) {
182 dcp->set_forced_reduction (_dcp_decode_reduction);
186 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
187 _pieces.push_back (piece);
189 if (decoder->video) {
190 if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
191 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
192 decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
194 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
198 if (decoder->audio) {
199 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
202 list<shared_ptr<TextDecoder> >::const_iterator j = decoder->text.begin();
204 while (j != decoder->text.end()) {
205 (*j)->BitmapStart.connect (
206 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
208 (*j)->PlainStart.connect (
209 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
212 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
219 _stream_states.clear ();
220 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
221 if (i->content->audio) {
222 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
223 _stream_states[j] = StreamState (i, i->content->position ());
228 _black = Empty (_film, _pieces, bind(&have_video, _1));
229 _silent = Empty (_film, _pieces, bind(&have_audio, _1));
231 _last_video_time = DCPTime ();
232 _last_video_eyes = EYES_BOTH;
233 _last_audio_time = DCPTime ();
237 Player::playlist_content_change (ChangeType type, int property, bool frequent)
239 if (type == CHANGE_TYPE_PENDING) {
240 boost::mutex::scoped_lock lm (_mutex);
241 /* The player content is probably about to change, so we can't carry on
242 until that has happened and we've rebuilt our pieces. Stop pass()
243 and seek() from working until then.
246 } else if (type == CHANGE_TYPE_DONE) {
247 /* A change in our content has gone through. Re-build our pieces. */
250 } else if (type == CHANGE_TYPE_CANCELLED) {
251 boost::mutex::scoped_lock lm (_mutex);
255 Change (type, property, frequent);
259 Player::set_video_container_size (dcp::Size s)
261 Change (CHANGE_TYPE_PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
264 boost::mutex::scoped_lock lm (_mutex);
266 if (s == _video_container_size) {
268 Change (CHANGE_TYPE_CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
272 _video_container_size = s;
274 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
275 _black_image->make_black ();
278 Change (CHANGE_TYPE_DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
282 Player::playlist_change (ChangeType type)
284 if (type == CHANGE_TYPE_DONE) {
287 Change (type, PlayerProperty::PLAYLIST, false);
291 Player::film_change (ChangeType type, Film::Property p)
293 /* Here we should notice Film properties that affect our output, and
294 alert listeners that our output now would be different to how it was
295 last time we were run.
298 if (p == Film::CONTAINER) {
299 Change (type, PlayerProperty::FILM_CONTAINER, false);
300 } else if (p == Film::VIDEO_FRAME_RATE) {
301 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
302 so we need new pieces here.
304 if (type == CHANGE_TYPE_DONE) {
307 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
308 } else if (p == Film::AUDIO_PROCESSOR) {
309 if (type == CHANGE_TYPE_DONE && _film->audio_processor ()) {
310 boost::mutex::scoped_lock lm (_mutex);
311 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
313 } else if (p == Film::AUDIO_CHANNELS) {
314 if (type == CHANGE_TYPE_DONE) {
315 boost::mutex::scoped_lock lm (_mutex);
316 _audio_merger.clear ();
321 shared_ptr<PlayerVideo>
322 Player::black_player_video_frame (Eyes eyes) const
324 return shared_ptr<PlayerVideo> (
326 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
329 _video_container_size,
330 _video_container_size,
333 PresetColourConversion::all().front().conversion,
334 boost::weak_ptr<Content>(),
335 boost::optional<Frame>()
341 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
343 DCPTime s = t - piece->content->position ();
344 s = min (piece->content->length_after_trim(_film), s);
345 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
347 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
348 then convert that ContentTime to frames at the content's rate. However this fails for
349 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
350 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
352 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
354 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
358 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
360 /* See comment in dcp_to_content_video */
361 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
362 return d + piece->content->position();
366 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
368 DCPTime s = t - piece->content->position ();
369 s = min (piece->content->length_after_trim(_film), s);
370 /* See notes in dcp_to_content_video */
371 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
375 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
377 /* See comment in dcp_to_content_video */
378 return DCPTime::from_frames (f, _film->audio_frame_rate())
379 - DCPTime (piece->content->trim_start(), piece->frc)
380 + piece->content->position();
384 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
386 DCPTime s = t - piece->content->position ();
387 s = min (piece->content->length_after_trim(_film), s);
388 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
392 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
394 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
397 list<shared_ptr<Font> >
398 Player::get_subtitle_fonts ()
400 boost::mutex::scoped_lock lm (_mutex);
402 list<shared_ptr<Font> > fonts;
403 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
404 BOOST_FOREACH (shared_ptr<TextContent> j, i->content->text) {
405 /* XXX: things may go wrong if there are duplicate font IDs
406 with different font files.
408 list<shared_ptr<Font> > f = j->fonts ();
409 copy (f.begin(), f.end(), back_inserter (fonts));
416 /** Set this player never to produce any video data */
418 Player::set_ignore_video ()
420 boost::mutex::scoped_lock lm (_mutex);
421 _ignore_video = true;
422 setup_pieces_unlocked ();
426 Player::set_ignore_audio ()
428 boost::mutex::scoped_lock lm (_mutex);
429 _ignore_audio = true;
430 setup_pieces_unlocked ();
434 Player::set_ignore_text ()
436 boost::mutex::scoped_lock lm (_mutex);
438 setup_pieces_unlocked ();
441 /** Set the player to always burn open texts into the image regardless of the content settings */
443 Player::set_always_burn_open_subtitles ()
445 boost::mutex::scoped_lock lm (_mutex);
446 _always_burn_open_subtitles = true;
449 /** Sets up the player to be faster, possibly at the expense of quality */
453 boost::mutex::scoped_lock lm (_mutex);
455 setup_pieces_unlocked ();
459 Player::set_play_referenced ()
461 boost::mutex::scoped_lock lm (_mutex);
462 _play_referenced = true;
463 setup_pieces_unlocked ();
467 maybe_add_asset (list<ReferencedReelAsset>& a, shared_ptr<dcp::ReelAsset> r, Frame reel_trim_start, Frame reel_trim_end, DCPTime from, int const ffr)
469 DCPOMATIC_ASSERT (r);
470 r->set_entry_point (r->entry_point() + reel_trim_start);
471 r->set_duration (r->duration() - reel_trim_start - reel_trim_end);
472 if (r->duration() > 0) {
474 ReferencedReelAsset(r, DCPTimePeriod(from, from + DCPTime::from_frames(r->duration(), ffr)))
479 list<ReferencedReelAsset>
480 Player::get_reel_assets ()
482 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
484 list<ReferencedReelAsset> a;
486 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
487 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
492 scoped_ptr<DCPDecoder> decoder;
494 decoder.reset (new DCPDecoder (_film, j, false));
499 DCPOMATIC_ASSERT (j->video_frame_rate ());
500 double const cfr = j->video_frame_rate().get();
501 Frame const trim_start = j->trim_start().frames_round (cfr);
502 Frame const trim_end = j->trim_end().frames_round (cfr);
503 int const ffr = _film->video_frame_rate ();
505 /* position in the asset from the start */
506 int64_t offset_from_start = 0;
507 /* position in the asset from the end */
508 int64_t offset_from_end = 0;
509 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
510 /* Assume that main picture duration is the length of the reel */
511 offset_from_end += k->main_picture()->duration();
514 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
516 /* Assume that main picture duration is the length of the reel */
517 int64_t const reel_duration = k->main_picture()->duration();
519 /* See doc/design/trim_reels.svg */
520 Frame const reel_trim_start = min(reel_duration, max(int64_t(0), trim_start - offset_from_start));
521 Frame const reel_trim_end = min(reel_duration, max(int64_t(0), reel_duration - (offset_from_end - trim_end)));
523 DCPTime const from = i->position() + DCPTime::from_frames (offset_from_start, _film->video_frame_rate());
524 if (j->reference_video ()) {
525 maybe_add_asset (a, k->main_picture(), reel_trim_start, reel_trim_end, from, ffr);
528 if (j->reference_audio ()) {
529 maybe_add_asset (a, k->main_sound(), reel_trim_start, reel_trim_end, from, ffr);
532 if (j->reference_text (TEXT_OPEN_SUBTITLE)) {
533 maybe_add_asset (a, k->main_subtitle(), reel_trim_start, reel_trim_end, from, ffr);
536 if (j->reference_text (TEXT_CLOSED_CAPTION)) {
537 BOOST_FOREACH (shared_ptr<dcp::ReelClosedCaptionAsset> l, k->closed_captions()) {
538 maybe_add_asset (a, l, reel_trim_start, reel_trim_end, from, ffr);
542 offset_from_start += reel_duration;
543 offset_from_end -= reel_duration;
553 boost::mutex::scoped_lock lm (_mutex);
556 /* We can't pass in this state */
560 if (_playlist->length(_film) == DCPTime()) {
561 /* Special case of an empty Film; just give one black frame */
562 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
566 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
568 shared_ptr<Piece> earliest_content;
569 optional<DCPTime> earliest_time;
571 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
576 DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
577 if (t > i->content->end(_film)) {
581 /* Given two choices at the same time, pick the one with texts so we see it before
584 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
586 earliest_content = i;
600 if (earliest_content) {
604 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
605 earliest_time = _black.position ();
609 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
610 earliest_time = _silent.position ();
617 earliest_content->done = earliest_content->decoder->pass ();
618 shared_ptr<DCPContent> dcp = dynamic_pointer_cast<DCPContent>(earliest_content->content);
619 if (dcp && !_play_referenced && dcp->reference_audio()) {
620 /* We are skipping some referenced DCP audio content, so we need to update _last_audio_time
621 to `hide' the fact that no audio was emitted during the referenced DCP (though
622 we need to behave as though it was).
624 _last_audio_time = dcp->end (_film);
629 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
630 _black.set_position (_black.position() + one_video_frame());
634 DCPTimePeriod period (_silent.period_at_position());
635 if (_last_audio_time) {
636 /* Sometimes the thing that happened last finishes fractionally before
637 or after this silence. Bodge the start time of the silence to fix it.
639 DCPOMATIC_ASSERT (labs(period.from.get() - _last_audio_time->get()) < 2);
640 period.from = *_last_audio_time;
642 if (period.duration() > one_video_frame()) {
643 period.to = period.from + one_video_frame();
646 _silent.set_position (period.to);
654 /* Emit any audio that is ready */
656 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
657 of our streams, or the position of the _silent.
659 DCPTime pull_to = _film->length ();
660 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
661 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
662 pull_to = i->second.last_push_end;
665 if (!_silent.done() && _silent.position() < pull_to) {
666 pull_to = _silent.position();
669 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
670 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
671 if (_last_audio_time && i->second < *_last_audio_time) {
672 /* This new data comes before the last we emitted (or the last seek); discard it */
673 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
678 } else if (_last_audio_time && i->second > *_last_audio_time) {
679 /* There's a gap between this data and the last we emitted; fill with silence */
680 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
683 emit_audio (i->first, i->second);
688 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
689 do_emit_video(i->first, i->second);
696 /** @return Open subtitles for the frame at the given time, converted to images */
697 optional<PositionImage>
698 Player::open_subtitles_for_frame (DCPTime time) const
700 list<PositionImage> captions;
701 int const vfr = _film->video_frame_rate();
705 _active_texts[TEXT_OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
708 /* Bitmap subtitles */
709 BOOST_FOREACH (BitmapText i, j.bitmap) {
714 /* i.image will already have been scaled to fit _video_container_size */
715 dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height);
721 lrint (_video_container_size.width * i.rectangle.x),
722 lrint (_video_container_size.height * i.rectangle.y)
728 /* String subtitles (rendered to an image) */
729 if (!j.string.empty ()) {
730 list<PositionImage> s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
731 copy (s.begin(), s.end(), back_inserter (captions));
735 if (captions.empty ()) {
736 return optional<PositionImage> ();
739 return merge (captions);
743 Player::video (weak_ptr<Piece> wp, ContentVideo video)
745 shared_ptr<Piece> piece = wp.lock ();
750 FrameRateChange frc (_film, piece->content);
751 if (frc.skip && (video.frame % 2) == 1) {
755 /* Time of the first frame we will emit */
756 DCPTime const time = content_video_to_dcp (piece, video.frame);
758 /* Discard if it's before the content's period or the last accurate seek. We can't discard
759 if it's after the content's period here as in that case we still need to fill any gap between
760 `now' and the end of the content's period.
762 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
766 /* Fill gaps that we discover now that we have some video which needs to be emitted.
767 This is where we need to fill to.
769 DCPTime fill_to = min (time, piece->content->end(_film));
771 if (_last_video_time) {
772 DCPTime fill_from = max (*_last_video_time, piece->content->position());
774 /* Fill if we have more than half a frame to do */
775 if ((fill_to - fill_from) > one_video_frame() / 2) {
776 LastVideoMap::const_iterator last = _last_video.find (wp);
777 if (_film->three_d()) {
778 Eyes fill_to_eyes = video.eyes;
779 if (fill_to_eyes == EYES_BOTH) {
780 fill_to_eyes = EYES_LEFT;
782 if (fill_to == piece->content->end(_film)) {
783 /* Don't fill after the end of the content */
784 fill_to_eyes = EYES_LEFT;
786 DCPTime j = fill_from;
787 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
788 if (eyes == EYES_BOTH) {
791 while (j < fill_to || eyes != fill_to_eyes) {
792 if (last != _last_video.end()) {
793 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
794 copy->set_eyes (eyes);
795 emit_video (copy, j);
797 emit_video (black_player_video_frame(eyes), j);
799 if (eyes == EYES_RIGHT) {
800 j += one_video_frame();
802 eyes = increment_eyes (eyes);
805 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
806 if (last != _last_video.end()) {
807 emit_video (last->second, j);
809 emit_video (black_player_video_frame(EYES_BOTH), j);
816 _last_video[wp].reset (
819 piece->content->video->crop (),
820 piece->content->video->fade (_film, video.frame),
821 piece->content->video->scale().size (
822 piece->content->video, _video_container_size, _film->frame_size ()
824 _video_container_size,
827 piece->content->video->colour_conversion(),
834 for (int i = 0; i < frc.repeat; ++i) {
835 if (t < piece->content->end(_film)) {
836 emit_video (_last_video[wp], t);
838 t += one_video_frame ();
843 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
845 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
847 shared_ptr<Piece> piece = wp.lock ();
852 shared_ptr<AudioContent> content = piece->content->audio;
853 DCPOMATIC_ASSERT (content);
855 /* Compute time in the DCP */
856 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
857 /* And the end of this block in the DCP */
858 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate(_film));
860 /* Remove anything that comes before the start or after the end of the content */
861 if (time < piece->content->position()) {
862 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
864 /* This audio is entirely discarded */
867 content_audio.audio = cut.first;
869 } else if (time > piece->content->end(_film)) {
872 } else if (end > piece->content->end(_film)) {
873 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(_film->audio_frame_rate());
874 if (remaining_frames == 0) {
877 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
878 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
879 content_audio.audio = cut;
882 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
886 if (content->gain() != 0) {
887 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
888 gain->apply_gain (content->gain ());
889 content_audio.audio = gain;
894 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
898 if (_audio_processor) {
899 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
904 _audio_merger.push (content_audio.audio, time);
905 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
906 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
910 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
912 shared_ptr<Piece> piece = wp.lock ();
913 shared_ptr<const TextContent> text = wc.lock ();
914 if (!piece || !text) {
918 /* Apply content's subtitle offsets */
919 subtitle.sub.rectangle.x += text->x_offset ();
920 subtitle.sub.rectangle.y += text->y_offset ();
922 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
923 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
924 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
926 /* Apply content's subtitle scale */
927 subtitle.sub.rectangle.width *= text->x_scale ();
928 subtitle.sub.rectangle.height *= text->y_scale ();
931 shared_ptr<Image> image = subtitle.sub.image;
932 /* We will scale the subtitle up to fit _video_container_size */
933 dcp::Size scaled_size (subtitle.sub.rectangle.width * _video_container_size.width, subtitle.sub.rectangle.height * _video_container_size.height);
934 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUV_TO_RGB_REC601, image->pixel_format(), true, _fast), subtitle.sub.rectangle));
935 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
937 _active_texts[text->type()].add_from (wc, ps, from);
941 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
943 shared_ptr<Piece> piece = wp.lock ();
944 shared_ptr<const TextContent> text = wc.lock ();
945 if (!piece || !text) {
950 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
952 if (from > piece->content->end(_film)) {
956 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
957 s.set_h_position (s.h_position() + text->x_offset ());
958 s.set_v_position (s.v_position() + text->y_offset ());
959 float const xs = text->x_scale();
960 float const ys = text->y_scale();
961 float size = s.size();
963 /* Adjust size to express the common part of the scaling;
964 e.g. if xs = ys = 0.5 we scale size by 2.
966 if (xs > 1e-5 && ys > 1e-5) {
967 size *= 1 / min (1 / xs, 1 / ys);
971 /* Then express aspect ratio changes */
972 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
973 s.set_aspect_adjust (xs / ys);
976 s.set_in (dcp::Time(from.seconds(), 1000));
977 ps.string.push_back (StringText (s, text->outline_width()));
978 ps.add_fonts (text->fonts ());
981 _active_texts[text->type()].add_from (wc, ps, from);
985 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to)
987 shared_ptr<const TextContent> text = wc.lock ();
992 if (!_active_texts[text->type()].have(wc)) {
996 shared_ptr<Piece> piece = wp.lock ();
1001 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1003 if (dcp_to > piece->content->end(_film)) {
1007 pair<PlayerText, DCPTime> from = _active_texts[text->type()].add_to (wc, dcp_to);
1009 bool const always = (text->type() == TEXT_OPEN_SUBTITLE && _always_burn_open_subtitles);
1010 if (text->use() && !always && !text->burn()) {
1011 Text (from.first, text->type(), text->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod (from.second, dcp_to));
1016 Player::seek (DCPTime time, bool accurate)
1018 boost::mutex::scoped_lock lm (_mutex);
1021 /* We can't seek in this state */
1026 _shuffler->clear ();
1031 if (_audio_processor) {
1032 _audio_processor->flush ();
1035 _audio_merger.clear ();
1036 for (int i = 0; i < TEXT_COUNT; ++i) {
1037 _active_texts[i].clear ();
1040 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1041 if (time < i->content->position()) {
1042 /* Before; seek to the start of the content */
1043 i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
1045 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1046 /* During; seek to position */
1047 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1050 /* After; this piece is done */
1056 _last_video_time = time;
1057 _last_video_eyes = EYES_LEFT;
1058 _last_audio_time = time;
1060 _last_video_time = optional<DCPTime>();
1061 _last_video_eyes = optional<Eyes>();
1062 _last_audio_time = optional<DCPTime>();
1065 _black.set_position (time);
1066 _silent.set_position (time);
1068 _last_video.clear ();
1072 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1074 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1075 player before the video that requires them.
1077 _delay.push_back (make_pair (pv, time));
1079 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1080 _last_video_time = time + one_video_frame();
1082 _last_video_eyes = increment_eyes (pv->eyes());
1084 if (_delay.size() < 3) {
1088 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1090 do_emit_video (to_do.first, to_do.second);
1094 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1096 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1097 for (int i = 0; i < TEXT_COUNT; ++i) {
1098 _active_texts[i].clear_before (time);
1102 optional<PositionImage> subtitles = open_subtitles_for_frame (time);
1104 pv->set_text (subtitles.get ());
1111 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1113 /* Log if the assert below is about to fail */
1114 if (_last_audio_time && labs(time.get() - _last_audio_time->get()) > 1) {
1115 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1118 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1119 DCPOMATIC_ASSERT (!_last_audio_time || labs(time.get() - _last_audio_time->get()) < 2);
1120 Audio (data, time, _film->audio_frame_rate());
1121 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1125 Player::fill_audio (DCPTimePeriod period)
1127 if (period.from == period.to) {
1131 DCPOMATIC_ASSERT (period.from < period.to);
1133 DCPTime t = period.from;
1134 while (t < period.to) {
1135 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1136 Frame const samples = block.frames_round(_film->audio_frame_rate());
1138 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1139 silence->make_silent ();
1140 emit_audio (silence, t);
1147 Player::one_video_frame () const
1149 return DCPTime::from_frames (1, _film->video_frame_rate ());
1152 pair<shared_ptr<AudioBuffers>, DCPTime>
1153 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1155 DCPTime const discard_time = discard_to - time;
1156 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1157 Frame remaining_frames = audio->frames() - discard_frames;
1158 if (remaining_frames <= 0) {
1159 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1161 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1162 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1163 return make_pair(cut, time + discard_time);
1167 Player::set_dcp_decode_reduction (optional<int> reduction)
1169 Change (CHANGE_TYPE_PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1172 boost::mutex::scoped_lock lm (_mutex);
1174 if (reduction == _dcp_decode_reduction) {
1176 Change (CHANGE_TYPE_CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1180 _dcp_decode_reduction = reduction;
1181 setup_pieces_unlocked ();
1184 Change (CHANGE_TYPE_DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1188 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1190 boost::mutex::scoped_lock lm (_mutex);
1192 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1193 if (i->content == content) {
1194 return content_time_to_dcp (i, t);
1198 /* We couldn't find this content; perhaps things are being changed over */
1199 return optional<DCPTime>();