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 ();
466 list<ReferencedReelAsset>
467 Player::get_reel_assets ()
469 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
471 list<ReferencedReelAsset> a;
473 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
474 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
479 scoped_ptr<DCPDecoder> decoder;
481 decoder.reset (new DCPDecoder (_film, j, false));
487 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
489 DCPOMATIC_ASSERT (j->video_frame_rate ());
490 double const cfr = j->video_frame_rate().get();
491 Frame const trim_start = j->trim_start().frames_round (cfr);
492 Frame const trim_end = j->trim_end().frames_round (cfr);
493 int const ffr = _film->video_frame_rate ();
495 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
496 if (j->reference_video ()) {
497 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
498 DCPOMATIC_ASSERT (ra);
499 ra->set_entry_point (ra->entry_point() + trim_start);
500 ra->set_duration (ra->duration() - trim_start - trim_end);
502 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
506 if (j->reference_audio ()) {
507 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
508 DCPOMATIC_ASSERT (ra);
509 ra->set_entry_point (ra->entry_point() + trim_start);
510 ra->set_duration (ra->duration() - trim_start - trim_end);
512 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
516 if (j->reference_text (TEXT_OPEN_SUBTITLE)) {
517 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
518 DCPOMATIC_ASSERT (ra);
519 ra->set_entry_point (ra->entry_point() + trim_start);
520 ra->set_duration (ra->duration() - trim_start - trim_end);
522 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
526 if (j->reference_text (TEXT_CLOSED_CAPTION)) {
527 BOOST_FOREACH (shared_ptr<dcp::ReelClosedCaptionAsset> l, k->closed_captions()) {
528 DCPOMATIC_ASSERT (l);
529 l->set_entry_point (l->entry_point() + trim_start);
530 l->set_duration (l->duration() - trim_start - trim_end);
532 ReferencedReelAsset (l, DCPTimePeriod (from, from + DCPTime::from_frames (l->duration(), ffr)))
537 /* Assume that main picture duration is the length of the reel */
538 offset += k->main_picture()->duration ();
548 boost::mutex::scoped_lock lm (_mutex);
551 /* We can't pass in this state */
555 if (_playlist->length(_film) == DCPTime()) {
556 /* Special case of an empty Film; just give one black frame */
557 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
561 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
563 shared_ptr<Piece> earliest_content;
564 optional<DCPTime> earliest_time;
566 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
571 DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
572 if (t > i->content->end(_film)) {
576 /* Given two choices at the same time, pick the one with texts so we see it before
579 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
581 earliest_content = i;
595 if (earliest_content) {
599 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
600 earliest_time = _black.position ();
604 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
605 earliest_time = _silent.position ();
611 earliest_content->done = earliest_content->decoder->pass ();
614 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
615 _black.set_position (_black.position() + one_video_frame());
619 DCPTimePeriod period (_silent.period_at_position());
620 if (_last_audio_time) {
621 /* Sometimes the thing that happened last finishes fractionally before
622 or after this silence. Bodge the start time of the silence to fix it.
624 DCPOMATIC_ASSERT (labs(period.from.get() - _last_audio_time->get()) < 2);
625 period.from = *_last_audio_time;
627 if (period.duration() > one_video_frame()) {
628 period.to = period.from + one_video_frame();
631 _silent.set_position (period.to);
639 /* Emit any audio that is ready */
641 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
642 of our streams, or the position of the _silent.
644 DCPTime pull_to = _film->length ();
645 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
646 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
647 pull_to = i->second.last_push_end;
650 if (!_silent.done() && _silent.position() < pull_to) {
651 pull_to = _silent.position();
654 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
655 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
656 if (_last_audio_time && i->second < *_last_audio_time) {
657 /* This new data comes before the last we emitted (or the last seek); discard it */
658 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
663 } else if (_last_audio_time && i->second > *_last_audio_time) {
664 /* There's a gap between this data and the last we emitted; fill with silence */
665 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
668 emit_audio (i->first, i->second);
673 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
674 do_emit_video(i->first, i->second);
681 /** @return Open subtitles for the frame at the given time, converted to images */
682 optional<PositionImage>
683 Player::open_subtitles_for_frame (DCPTime time) const
685 list<PositionImage> captions;
686 int const vfr = _film->video_frame_rate();
690 _active_texts[TEXT_OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
693 /* Bitmap subtitles */
694 BOOST_FOREACH (BitmapText i, j.bitmap) {
699 /* i.image will already have been scaled to fit _video_container_size */
700 dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height);
706 lrint (_video_container_size.width * i.rectangle.x),
707 lrint (_video_container_size.height * i.rectangle.y)
713 /* String subtitles (rendered to an image) */
714 if (!j.string.empty ()) {
715 list<PositionImage> s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
716 copy (s.begin(), s.end(), back_inserter (captions));
720 if (captions.empty ()) {
721 return optional<PositionImage> ();
724 return merge (captions);
728 Player::video (weak_ptr<Piece> wp, ContentVideo video)
730 shared_ptr<Piece> piece = wp.lock ();
735 FrameRateChange frc (_film, piece->content);
736 if (frc.skip && (video.frame % 2) == 1) {
740 /* Time of the first frame we will emit */
741 DCPTime const time = content_video_to_dcp (piece, video.frame);
743 /* Discard if it's before the content's period or the last accurate seek. We can't discard
744 if it's after the content's period here as in that case we still need to fill any gap between
745 `now' and the end of the content's period.
747 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
751 /* Fill gaps that we discover now that we have some video which needs to be emitted.
752 This is where we need to fill to.
754 DCPTime fill_to = min (time, piece->content->end(_film));
756 if (_last_video_time) {
757 DCPTime fill_from = max (*_last_video_time, piece->content->position());
759 /* Fill if we have more than half a frame to do */
760 if ((fill_to - fill_from) > one_video_frame() / 2) {
761 LastVideoMap::const_iterator last = _last_video.find (wp);
762 if (_film->three_d()) {
763 Eyes fill_to_eyes = video.eyes;
764 if (fill_to_eyes == EYES_BOTH) {
765 fill_to_eyes = EYES_LEFT;
767 if (fill_to == piece->content->end(_film)) {
768 /* Don't fill after the end of the content */
769 fill_to_eyes = EYES_LEFT;
771 DCPTime j = fill_from;
772 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
773 if (eyes == EYES_BOTH) {
776 while (j < fill_to || eyes != fill_to_eyes) {
777 if (last != _last_video.end()) {
778 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
779 copy->set_eyes (eyes);
780 emit_video (copy, j);
782 emit_video (black_player_video_frame(eyes), j);
784 if (eyes == EYES_RIGHT) {
785 j += one_video_frame();
787 eyes = increment_eyes (eyes);
790 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
791 if (last != _last_video.end()) {
792 emit_video (last->second, j);
794 emit_video (black_player_video_frame(EYES_BOTH), j);
801 _last_video[wp].reset (
804 piece->content->video->crop (),
805 piece->content->video->fade (_film, video.frame),
806 piece->content->video->scale().size (
807 piece->content->video, _video_container_size, _film->frame_size ()
809 _video_container_size,
812 piece->content->video->colour_conversion(),
819 for (int i = 0; i < frc.repeat; ++i) {
820 if (t < piece->content->end(_film)) {
821 emit_video (_last_video[wp], t);
823 t += one_video_frame ();
828 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
830 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
832 shared_ptr<Piece> piece = wp.lock ();
837 shared_ptr<AudioContent> content = piece->content->audio;
838 DCPOMATIC_ASSERT (content);
840 /* Compute time in the DCP */
841 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
842 /* And the end of this block in the DCP */
843 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate(_film));
845 /* Remove anything that comes before the start or after the end of the content */
846 if (time < piece->content->position()) {
847 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
849 /* This audio is entirely discarded */
852 content_audio.audio = cut.first;
854 } else if (time > piece->content->end(_film)) {
857 } else if (end > piece->content->end(_film)) {
858 Frame const remaining_frames = DCPTime(piece->content->end(_film) - time).frames_round(_film->audio_frame_rate());
859 if (remaining_frames == 0) {
862 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
863 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
864 content_audio.audio = cut;
867 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
871 if (content->gain() != 0) {
872 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
873 gain->apply_gain (content->gain ());
874 content_audio.audio = gain;
879 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
883 if (_audio_processor) {
884 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
889 _audio_merger.push (content_audio.audio, time);
890 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
891 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
895 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
897 shared_ptr<Piece> piece = wp.lock ();
898 shared_ptr<const TextContent> text = wc.lock ();
899 if (!piece || !text) {
903 /* Apply content's subtitle offsets */
904 subtitle.sub.rectangle.x += text->x_offset ();
905 subtitle.sub.rectangle.y += text->y_offset ();
907 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
908 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
909 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
911 /* Apply content's subtitle scale */
912 subtitle.sub.rectangle.width *= text->x_scale ();
913 subtitle.sub.rectangle.height *= text->y_scale ();
916 shared_ptr<Image> image = subtitle.sub.image;
917 /* We will scale the subtitle up to fit _video_container_size */
918 dcp::Size scaled_size (subtitle.sub.rectangle.width * _video_container_size.width, subtitle.sub.rectangle.height * _video_container_size.height);
919 ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUV_TO_RGB_REC601, image->pixel_format(), true, _fast), subtitle.sub.rectangle));
920 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
922 _active_texts[text->type()].add_from (wc, ps, from);
926 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
928 shared_ptr<Piece> piece = wp.lock ();
929 shared_ptr<const TextContent> text = wc.lock ();
930 if (!piece || !text) {
935 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
937 if (from > piece->content->end(_film)) {
941 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
942 s.set_h_position (s.h_position() + text->x_offset ());
943 s.set_v_position (s.v_position() + text->y_offset ());
944 float const xs = text->x_scale();
945 float const ys = text->y_scale();
946 float size = s.size();
948 /* Adjust size to express the common part of the scaling;
949 e.g. if xs = ys = 0.5 we scale size by 2.
951 if (xs > 1e-5 && ys > 1e-5) {
952 size *= 1 / min (1 / xs, 1 / ys);
956 /* Then express aspect ratio changes */
957 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
958 s.set_aspect_adjust (xs / ys);
961 s.set_in (dcp::Time(from.seconds(), 1000));
962 ps.string.push_back (StringText (s, text->outline_width()));
963 ps.add_fonts (text->fonts ());
966 _active_texts[text->type()].add_from (wc, ps, from);
970 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to)
972 shared_ptr<const TextContent> text = wc.lock ();
977 if (!_active_texts[text->type()].have(wc)) {
981 shared_ptr<Piece> piece = wp.lock ();
986 DCPTime const dcp_to = content_time_to_dcp (piece, to);
988 if (dcp_to > piece->content->end(_film)) {
992 pair<PlayerText, DCPTime> from = _active_texts[text->type()].add_to (wc, dcp_to);
994 bool const always = (text->type() == TEXT_OPEN_SUBTITLE && _always_burn_open_subtitles);
995 if (text->use() && !always && !text->burn()) {
996 Text (from.first, text->type(), text->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod (from.second, dcp_to));
1001 Player::seek (DCPTime time, bool accurate)
1003 boost::mutex::scoped_lock lm (_mutex);
1006 /* We can't seek in this state */
1011 _shuffler->clear ();
1016 if (_audio_processor) {
1017 _audio_processor->flush ();
1020 _audio_merger.clear ();
1021 for (int i = 0; i < TEXT_COUNT; ++i) {
1022 _active_texts[i].clear ();
1025 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1026 if (time < i->content->position()) {
1027 /* Before; seek to the start of the content */
1028 i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
1030 } else if (i->content->position() <= time && time < i->content->end(_film)) {
1031 /* During; seek to position */
1032 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1035 /* After; this piece is done */
1041 _last_video_time = time;
1042 _last_video_eyes = EYES_LEFT;
1043 _last_audio_time = time;
1045 _last_video_time = optional<DCPTime>();
1046 _last_video_eyes = optional<Eyes>();
1047 _last_audio_time = optional<DCPTime>();
1050 _black.set_position (time);
1051 _silent.set_position (time);
1053 _last_video.clear ();
1057 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1059 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1060 player before the video that requires them.
1062 _delay.push_back (make_pair (pv, time));
1064 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1065 _last_video_time = time + one_video_frame();
1067 _last_video_eyes = increment_eyes (pv->eyes());
1069 if (_delay.size() < 3) {
1073 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1075 do_emit_video (to_do.first, to_do.second);
1079 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1081 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1082 for (int i = 0; i < TEXT_COUNT; ++i) {
1083 _active_texts[i].clear_before (time);
1087 optional<PositionImage> subtitles = open_subtitles_for_frame (time);
1089 pv->set_text (subtitles.get ());
1096 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1098 /* Log if the assert below is about to fail */
1099 if (_last_audio_time && labs(time.get() - _last_audio_time->get()) > 1) {
1100 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1103 /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */
1104 DCPOMATIC_ASSERT (!_last_audio_time || labs(time.get() - _last_audio_time->get()) < 2);
1105 Audio (data, time, _film->audio_frame_rate());
1106 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1110 Player::fill_audio (DCPTimePeriod period)
1112 if (period.from == period.to) {
1116 DCPOMATIC_ASSERT (period.from < period.to);
1118 DCPTime t = period.from;
1119 while (t < period.to) {
1120 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1121 Frame const samples = block.frames_round(_film->audio_frame_rate());
1123 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1124 silence->make_silent ();
1125 emit_audio (silence, t);
1132 Player::one_video_frame () const
1134 return DCPTime::from_frames (1, _film->video_frame_rate ());
1137 pair<shared_ptr<AudioBuffers>, DCPTime>
1138 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1140 DCPTime const discard_time = discard_to - time;
1141 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1142 Frame remaining_frames = audio->frames() - discard_frames;
1143 if (remaining_frames <= 0) {
1144 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1146 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1147 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1148 return make_pair(cut, time + discard_time);
1152 Player::set_dcp_decode_reduction (optional<int> reduction)
1154 Change (CHANGE_TYPE_PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1157 boost::mutex::scoped_lock lm (_mutex);
1159 if (reduction == _dcp_decode_reduction) {
1161 Change (CHANGE_TYPE_CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1165 _dcp_decode_reduction = reduction;
1166 setup_pieces_unlocked ();
1169 Change (CHANGE_TYPE_DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1173 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1175 boost::mutex::scoped_lock lm (_mutex);
1177 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1178 if (i->content == content) {
1179 return content_time_to_dcp (i, t);
1183 /* We couldn't find this content; perhaps things are being changed over */
1184 return optional<DCPTime>();