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>
63 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
75 using boost::shared_ptr;
76 using boost::weak_ptr;
77 using boost::dynamic_pointer_cast;
78 using boost::optional;
79 using boost::scoped_ptr;
81 int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
82 int const PlayerProperty::PLAYLIST = 701;
83 int const PlayerProperty::FILM_CONTAINER = 702;
84 int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
85 int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
87 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
89 , _playlist (playlist)
91 , _ignore_video (false)
92 , _ignore_audio (false)
93 , _ignore_text (false)
94 , _always_burn_open_subtitles (false)
96 , _play_referenced (false)
97 , _audio_merger (_film->audio_frame_rate())
100 _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2));
101 _playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1));
102 _playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
103 set_video_container_size (_film->frame_size ());
105 film_change (CHANGE_TYPE_DONE, Film::AUDIO_PROCESSOR);
108 seek (DCPTime (), true);
117 Player::setup_pieces ()
119 boost::mutex::scoped_lock lm (_mutex);
120 setup_pieces_unlocked ();
124 Player::setup_pieces_unlocked ()
129 _shuffler = new Shuffler();
130 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
132 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
134 if (!i->paths_valid ()) {
138 if (_ignore_video && _ignore_audio && i->text.empty()) {
139 /* We're only interested in text and this content has none */
143 shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
144 FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
147 /* Not something that we can decode; e.g. Atmos content */
151 if (decoder->video && _ignore_video) {
152 decoder->video->set_ignore (true);
155 if (decoder->audio && _ignore_audio) {
156 decoder->audio->set_ignore (true);
160 BOOST_FOREACH (shared_ptr<TextDecoder> i, decoder->text) {
161 i->set_ignore (true);
165 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
167 dcp->set_decode_referenced (_play_referenced);
168 if (_play_referenced) {
169 dcp->set_forced_reduction (_dcp_decode_reduction);
173 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
174 _pieces.push_back (piece);
176 if (decoder->video) {
177 if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
178 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
179 decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
181 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
185 if (decoder->audio) {
186 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
189 list<shared_ptr<TextDecoder> >::const_iterator j = decoder->text.begin();
191 while (j != decoder->text.end()) {
192 (*j)->BitmapStart.connect (
193 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
195 (*j)->PlainStart.connect (
196 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
199 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1, _2)
206 _stream_states.clear ();
207 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
208 if (i->content->audio) {
209 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
210 _stream_states[j] = StreamState (i, i->content->position ());
215 _black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
216 _silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
218 _last_video_time = DCPTime ();
219 _last_video_eyes = EYES_BOTH;
220 _last_audio_time = DCPTime ();
225 Player::playlist_content_change (ChangeType type, int property, bool frequent)
227 if (type == CHANGE_TYPE_PENDING) {
228 boost::mutex::scoped_lock lm (_mutex);
229 /* The player content is probably about to change, so we can't carry on
230 until that has happened and we've rebuilt our pieces. Stop pass()
231 and seek() from working until then.
234 } else if (type == CHANGE_TYPE_DONE) {
235 /* A change in our content has gone through. Re-build our pieces. */
239 Change (type, property, frequent);
243 Player::set_video_container_size (dcp::Size s)
246 boost::mutex::scoped_lock lm (_mutex);
248 if (s == _video_container_size) {
252 _video_container_size = s;
254 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
255 _black_image->make_black ();
258 Change (CHANGE_TYPE_DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
262 Player::playlist_change (ChangeType type)
264 if (type == CHANGE_TYPE_DONE) {
267 Change (type, PlayerProperty::PLAYLIST, false);
271 Player::film_change (ChangeType type, Film::Property p)
273 /* Here we should notice Film properties that affect our output, and
274 alert listeners that our output now would be different to how it was
275 last time we were run.
278 if (p == Film::CONTAINER) {
279 Change (type, PlayerProperty::FILM_CONTAINER, false);
280 } else if (p == Film::VIDEO_FRAME_RATE) {
281 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
282 so we need new pieces here.
284 if (type == CHANGE_TYPE_DONE) {
287 Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
288 } else if (p == Film::AUDIO_PROCESSOR) {
289 if (type == CHANGE_TYPE_DONE && _film->audio_processor ()) {
290 boost::mutex::scoped_lock lm (_mutex);
291 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
293 } else if (p == Film::AUDIO_CHANNELS) {
294 if (type == CHANGE_TYPE_DONE) {
295 boost::mutex::scoped_lock lm (_mutex);
296 _audio_merger.clear ();
302 Player::transform_bitmap_texts (list<BitmapText> subs) const
304 list<PositionImage> all;
306 for (list<BitmapText>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
311 /* We will scale the subtitle up to fit _video_container_size */
312 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
318 dcp::YUV_TO_RGB_REC601,
319 i->image->pixel_format (),
324 lrint (_video_container_size.width * i->rectangle.x),
325 lrint (_video_container_size.height * i->rectangle.y)
334 shared_ptr<PlayerVideo>
335 Player::black_player_video_frame (Eyes eyes) const
337 return shared_ptr<PlayerVideo> (
339 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
342 _video_container_size,
343 _video_container_size,
346 PresetColourConversion::all().front().conversion,
347 boost::weak_ptr<Content>(),
348 boost::optional<Frame>()
354 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
356 DCPTime s = t - piece->content->position ();
357 s = min (piece->content->length_after_trim(), s);
358 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
360 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
361 then convert that ContentTime to frames at the content's rate. However this fails for
362 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
363 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
365 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
367 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
371 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
373 /* See comment in dcp_to_content_video */
374 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
375 return d + piece->content->position();
379 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
381 DCPTime s = t - piece->content->position ();
382 s = min (piece->content->length_after_trim(), s);
383 /* See notes in dcp_to_content_video */
384 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
388 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
390 /* See comment in dcp_to_content_video */
391 return DCPTime::from_frames (f, _film->audio_frame_rate())
392 - DCPTime (piece->content->trim_start(), piece->frc)
393 + piece->content->position();
397 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
399 DCPTime s = t - piece->content->position ();
400 s = min (piece->content->length_after_trim(), s);
401 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
405 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
407 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
410 list<shared_ptr<Font> >
411 Player::get_subtitle_fonts ()
413 boost::mutex::scoped_lock lm (_mutex);
415 list<shared_ptr<Font> > fonts;
416 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
417 BOOST_FOREACH (shared_ptr<TextContent> j, i->content->text) {
418 /* XXX: things may go wrong if there are duplicate font IDs
419 with different font files.
421 list<shared_ptr<Font> > f = j->fonts ();
422 copy (f.begin(), f.end(), back_inserter (fonts));
429 /** Set this player never to produce any video data */
431 Player::set_ignore_video ()
433 boost::mutex::scoped_lock lm (_mutex);
434 _ignore_video = true;
435 setup_pieces_unlocked ();
439 Player::set_ignore_audio ()
441 boost::mutex::scoped_lock lm (_mutex);
442 _ignore_audio = true;
443 setup_pieces_unlocked ();
447 Player::set_ignore_text ()
449 boost::mutex::scoped_lock lm (_mutex);
451 setup_pieces_unlocked ();
454 /** Set the player to always burn open texts into the image regardless of the content settings */
456 Player::set_always_burn_open_subtitles ()
458 boost::mutex::scoped_lock lm (_mutex);
459 _always_burn_open_subtitles = true;
462 /** Sets up the player to be faster, possibly at the expense of quality */
466 boost::mutex::scoped_lock lm (_mutex);
468 setup_pieces_unlocked ();
472 Player::set_play_referenced ()
474 boost::mutex::scoped_lock lm (_mutex);
475 _play_referenced = true;
476 setup_pieces_unlocked ();
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 (j, _film->log(), false));
500 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
502 DCPOMATIC_ASSERT (j->video_frame_rate ());
503 double const cfr = j->video_frame_rate().get();
504 Frame const trim_start = j->trim_start().frames_round (cfr);
505 Frame const trim_end = j->trim_end().frames_round (cfr);
506 int const ffr = _film->video_frame_rate ();
508 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
509 if (j->reference_video ()) {
510 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
511 DCPOMATIC_ASSERT (ra);
512 ra->set_entry_point (ra->entry_point() + trim_start);
513 ra->set_duration (ra->duration() - trim_start - trim_end);
515 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
519 if (j->reference_audio ()) {
520 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
521 DCPOMATIC_ASSERT (ra);
522 ra->set_entry_point (ra->entry_point() + trim_start);
523 ra->set_duration (ra->duration() - trim_start - trim_end);
525 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
529 if (j->reference_text (TEXT_OPEN_SUBTITLE)) {
530 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
531 DCPOMATIC_ASSERT (ra);
532 ra->set_entry_point (ra->entry_point() + trim_start);
533 ra->set_duration (ra->duration() - trim_start - trim_end);
535 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
539 if (j->reference_text (TEXT_CLOSED_CAPTION)) {
540 shared_ptr<dcp::ReelAsset> ra = k->closed_caption ();
541 DCPOMATIC_ASSERT (ra);
542 ra->set_entry_point (ra->entry_point() + trim_start);
543 ra->set_duration (ra->duration() - trim_start - trim_end);
545 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
549 /* Assume that main picture duration is the length of the reel */
550 offset += k->main_picture()->duration ();
560 boost::mutex::scoped_lock lm (_mutex);
563 /* We can't pass in this state */
567 if (_playlist->length() == DCPTime()) {
568 /* Special case of an empty Film; just give one black frame */
569 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
573 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
575 shared_ptr<Piece> earliest_content;
576 optional<DCPTime> earliest_time;
578 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
583 DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
584 if (t > i->content->end()) {
588 /* Given two choices at the same time, pick the one with texts so we see it before
591 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
593 earliest_content = i;
607 if (earliest_content) {
611 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
612 earliest_time = _black.position ();
616 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
617 earliest_time = _silent.position ();
623 earliest_content->done = earliest_content->decoder->pass ();
626 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
627 _black.set_position (_black.position() + one_video_frame());
631 DCPTimePeriod period (_silent.period_at_position());
632 if (_last_audio_time) {
633 /* Sometimes the thing that happened last finishes fractionally before
634 this silence. Bodge the start time of the silence to fix it. I'm
635 not sure if this is the right solution --- maybe the last thing should
636 be padded `forward' rather than this thing padding `back'.
638 period.from = min(period.from, *_last_audio_time);
640 if (period.duration() > one_video_frame()) {
641 period.to = period.from + one_video_frame();
644 _silent.set_position (period.to);
652 /* Emit any audio that is ready */
654 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
655 of our streams, or the position of the _silent.
657 DCPTime pull_to = _film->length ();
658 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
659 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
660 pull_to = i->second.last_push_end;
663 if (!_silent.done() && _silent.position() < pull_to) {
664 pull_to = _silent.position();
667 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
668 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
669 if (_last_audio_time && i->second < *_last_audio_time) {
670 /* This new data comes before the last we emitted (or the last seek); discard it */
671 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
676 } else if (_last_audio_time && i->second > *_last_audio_time) {
677 /* There's a gap between this data and the last we emitted; fill with silence */
678 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
681 emit_audio (i->first, i->second);
686 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
687 do_emit_video(i->first, i->second);
694 /** @return Open subtitles for the frame at the given time, converted to images */
695 optional<PositionImage>
696 Player::open_subtitles_for_frame (DCPTime time) const
698 list<PositionImage> captions;
699 int const vfr = _film->video_frame_rate();
703 _active_texts[TEXT_OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
706 /* Bitmap subtitles */
707 list<PositionImage> c = transform_bitmap_texts (j.bitmap);
708 copy (c.begin(), c.end(), back_inserter (captions));
710 /* String subtitles (rendered to an image) */
711 if (!j.string.empty ()) {
712 list<PositionImage> s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
713 copy (s.begin(), s.end(), back_inserter (captions));
717 if (captions.empty ()) {
718 return optional<PositionImage> ();
721 return merge (captions);
725 Player::video (weak_ptr<Piece> wp, ContentVideo video)
727 shared_ptr<Piece> piece = wp.lock ();
732 FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
733 if (frc.skip && (video.frame % 2) == 1) {
737 /* Time of the first frame we will emit */
738 DCPTime const time = content_video_to_dcp (piece, video.frame);
740 /* Discard if it's before the content's period or the last accurate seek. We can't discard
741 if it's after the content's period here as in that case we still need to fill any gap between
742 `now' and the end of the content's period.
744 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
748 /* Fill gaps that we discover now that we have some video which needs to be emitted.
749 This is where we need to fill to.
751 DCPTime fill_to = min (time, piece->content->end());
753 if (_last_video_time) {
754 DCPTime fill_from = max (*_last_video_time, piece->content->position());
755 LastVideoMap::const_iterator last = _last_video.find (wp);
756 if (_film->three_d()) {
757 Eyes fill_to_eyes = video.eyes;
758 if (fill_to == piece->content->end()) {
759 /* Don't fill after the end of the content */
760 fill_to_eyes = EYES_LEFT;
762 DCPTime j = fill_from;
763 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
764 if (eyes == EYES_BOTH) {
767 while (j < fill_to || eyes != fill_to_eyes) {
768 if (last != _last_video.end()) {
769 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
770 copy->set_eyes (eyes);
771 emit_video (copy, j);
773 emit_video (black_player_video_frame(eyes), j);
775 if (eyes == EYES_RIGHT) {
776 j += one_video_frame();
778 eyes = increment_eyes (eyes);
781 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
782 if (last != _last_video.end()) {
783 emit_video (last->second, j);
785 emit_video (black_player_video_frame(EYES_BOTH), j);
791 _last_video[wp].reset (
794 piece->content->video->crop (),
795 piece->content->video->fade (video.frame),
796 piece->content->video->scale().size (
797 piece->content->video, _video_container_size, _film->frame_size ()
799 _video_container_size,
802 piece->content->video->colour_conversion(),
809 for (int i = 0; i < frc.repeat; ++i) {
810 if (t < piece->content->end()) {
811 emit_video (_last_video[wp], t);
813 t += one_video_frame ();
818 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
820 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
822 shared_ptr<Piece> piece = wp.lock ();
827 shared_ptr<AudioContent> content = piece->content->audio;
828 DCPOMATIC_ASSERT (content);
830 /* Compute time in the DCP */
831 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
832 /* And the end of this block in the DCP */
833 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
835 /* Remove anything that comes before the start or after the end of the content */
836 if (time < piece->content->position()) {
837 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
839 /* This audio is entirely discarded */
842 content_audio.audio = cut.first;
844 } else if (time > piece->content->end()) {
847 } else if (end > piece->content->end()) {
848 Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate());
849 if (remaining_frames == 0) {
852 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
853 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
854 content_audio.audio = cut;
857 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
861 if (content->gain() != 0) {
862 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
863 gain->apply_gain (content->gain ());
864 content_audio.audio = gain;
869 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
873 if (_audio_processor) {
874 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
879 _audio_merger.push (content_audio.audio, time);
880 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
881 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
885 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
887 shared_ptr<Piece> piece = wp.lock ();
888 shared_ptr<const TextContent> text = wc.lock ();
889 if (!piece || !text) {
893 /* Apply content's subtitle offsets */
894 subtitle.sub.rectangle.x += text->x_offset ();
895 subtitle.sub.rectangle.y += text->y_offset ();
897 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
898 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
899 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
901 /* Apply content's subtitle scale */
902 subtitle.sub.rectangle.width *= text->x_scale ();
903 subtitle.sub.rectangle.height *= text->y_scale ();
906 ps.bitmap.push_back (subtitle.sub);
907 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
909 _active_texts[subtitle.type()].add_from (wc, ps, from);
913 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
915 shared_ptr<Piece> piece = wp.lock ();
916 shared_ptr<const TextContent> text = wc.lock ();
917 if (!piece || !text) {
922 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
924 if (from > piece->content->end()) {
928 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
929 s.set_h_position (s.h_position() + text->x_offset ());
930 s.set_v_position (s.v_position() + text->y_offset ());
931 float const xs = text->x_scale();
932 float const ys = text->y_scale();
933 float size = s.size();
935 /* Adjust size to express the common part of the scaling;
936 e.g. if xs = ys = 0.5 we scale size by 2.
938 if (xs > 1e-5 && ys > 1e-5) {
939 size *= 1 / min (1 / xs, 1 / ys);
943 /* Then express aspect ratio changes */
944 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
945 s.set_aspect_adjust (xs / ys);
948 s.set_in (dcp::Time(from.seconds(), 1000));
949 ps.string.push_back (StringText (s, text->outline_width()));
950 ps.add_fonts (text->fonts ());
953 _active_texts[subtitle.type()].add_from (wc, ps, from);
957 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to, TextType type)
959 if (!_active_texts[type].have (wc)) {
963 shared_ptr<Piece> piece = wp.lock ();
964 shared_ptr<const TextContent> text = wc.lock ();
965 if (!piece || !text) {
969 DCPTime const dcp_to = content_time_to_dcp (piece, to);
971 if (dcp_to > piece->content->end()) {
975 pair<PlayerText, DCPTime> from = _active_texts[type].add_to (wc, dcp_to);
977 bool const always = (type == TEXT_OPEN_SUBTITLE && _always_burn_open_subtitles);
978 if (text->use() && !always && !text->burn()) {
979 Text (from.first, type, DCPTimePeriod (from.second, dcp_to));
984 Player::seek (DCPTime time, bool accurate)
986 boost::mutex::scoped_lock lm (_mutex);
989 /* We can't seek in this state */
999 if (_audio_processor) {
1000 _audio_processor->flush ();
1003 _audio_merger.clear ();
1004 for (int i = 0; i < TEXT_COUNT; ++i) {
1005 _active_texts[i].clear ();
1008 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1009 if (time < i->content->position()) {
1010 /* Before; seek to the start of the content */
1011 i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
1013 } else if (i->content->position() <= time && time < i->content->end()) {
1014 /* During; seek to position */
1015 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1018 /* After; this piece is done */
1024 _last_video_time = time;
1025 _last_video_eyes = EYES_LEFT;
1026 _last_audio_time = time;
1028 _last_video_time = optional<DCPTime>();
1029 _last_video_eyes = optional<Eyes>();
1030 _last_audio_time = optional<DCPTime>();
1033 _black.set_position (time);
1034 _silent.set_position (time);
1036 _last_video.clear ();
1040 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1042 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1043 player before the video that requires them.
1045 _delay.push_back (make_pair (pv, time));
1047 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1048 _last_video_time = time + one_video_frame();
1050 _last_video_eyes = increment_eyes (pv->eyes());
1052 if (_delay.size() < 3) {
1056 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1058 do_emit_video (to_do.first, to_do.second);
1062 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1064 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1065 for (int i = 0; i < TEXT_COUNT; ++i) {
1066 _active_texts[i].clear_before (time);
1070 optional<PositionImage> subtitles = open_subtitles_for_frame (time);
1072 pv->set_text (subtitles.get ());
1079 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1081 /* Log if the assert below is about to fail */
1082 if (_last_audio_time && time != *_last_audio_time) {
1083 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1086 /* This audio must follow on from the previous */
1087 DCPOMATIC_ASSERT (!_last_audio_time || time == *_last_audio_time);
1089 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1093 Player::fill_audio (DCPTimePeriod period)
1095 if (period.from == period.to) {
1099 DCPOMATIC_ASSERT (period.from < period.to);
1101 DCPTime t = period.from;
1102 while (t < period.to) {
1103 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1104 Frame const samples = block.frames_round(_film->audio_frame_rate());
1106 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1107 silence->make_silent ();
1108 emit_audio (silence, t);
1115 Player::one_video_frame () const
1117 return DCPTime::from_frames (1, _film->video_frame_rate ());
1120 pair<shared_ptr<AudioBuffers>, DCPTime>
1121 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1123 DCPTime const discard_time = discard_to - time;
1124 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1125 Frame remaining_frames = audio->frames() - discard_frames;
1126 if (remaining_frames <= 0) {
1127 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1129 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1130 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1131 return make_pair(cut, time + discard_time);
1135 Player::set_dcp_decode_reduction (optional<int> reduction)
1137 Change (CHANGE_TYPE_PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
1140 boost::mutex::scoped_lock lm (_mutex);
1142 if (reduction == _dcp_decode_reduction) {
1144 Change (CHANGE_TYPE_CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
1148 _dcp_decode_reduction = reduction;
1149 setup_pieces_unlocked ();
1152 Change (CHANGE_TYPE_DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
1156 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1158 boost::mutex::scoped_lock lm (_mutex);
1160 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1161 if (i->content == content) {
1162 return content_time_to_dcp (i, t);
1166 /* We couldn't find this content; perhaps things are being changed over */
1167 return optional<DCPTime>();