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)
90 , _have_valid_pieces (false)
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->Changed.connect (bind (&Player::film_changed, this, _1));
101 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
102 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
103 set_video_container_size (_film->frame_size ());
105 film_changed (Film::AUDIO_PROCESSOR);
107 seek (DCPTime (), true);
116 Player::setup_pieces ()
121 _shuffler = new Shuffler();
122 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
124 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
126 if (!i->paths_valid ()) {
130 if (_ignore_video && _ignore_audio && i->text.empty()) {
131 /* We're only interested in text and this content has none */
135 shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
136 FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
139 /* Not something that we can decode; e.g. Atmos content */
143 if (decoder->video && _ignore_video) {
144 decoder->video->set_ignore (true);
147 if (decoder->audio && _ignore_audio) {
148 decoder->audio->set_ignore (true);
152 BOOST_FOREACH (shared_ptr<TextDecoder> i, decoder->text) {
153 i->set_ignore (true);
157 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
159 dcp->set_decode_referenced (_play_referenced);
160 if (_play_referenced) {
161 dcp->set_forced_reduction (_dcp_decode_reduction);
165 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
166 _pieces.push_back (piece);
168 if (decoder->video) {
169 if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
170 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
171 decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
173 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
177 if (decoder->audio) {
178 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
181 list<shared_ptr<TextDecoder> >::const_iterator j = decoder->text.begin();
183 while (j != decoder->text.end()) {
184 (*j)->BitmapStart.connect (
185 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
187 (*j)->PlainStart.connect (
188 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1)
191 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const TextContent>((*j)->content()), _1, _2)
198 _stream_states.clear ();
199 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
200 if (i->content->audio) {
201 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
202 _stream_states[j] = StreamState (i, i->content->position ());
207 _black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
208 _silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
210 _last_video_time = DCPTime ();
211 _last_video_eyes = EYES_BOTH;
212 _last_audio_time = DCPTime ();
213 _have_valid_pieces = true;
217 Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
219 shared_ptr<Content> c = w.lock ();
225 property == ContentProperty::POSITION ||
226 property == ContentProperty::LENGTH ||
227 property == ContentProperty::TRIM_START ||
228 property == ContentProperty::TRIM_END ||
229 property == ContentProperty::PATH ||
230 property == VideoContentProperty::FRAME_TYPE ||
231 property == VideoContentProperty::COLOUR_CONVERSION ||
232 property == AudioContentProperty::STREAMS ||
233 property == DCPContentProperty::NEEDS_ASSETS ||
234 property == DCPContentProperty::NEEDS_KDM ||
235 property == TextContentProperty::COLOUR ||
236 property == TextContentProperty::EFFECT ||
237 property == TextContentProperty::EFFECT_COLOUR ||
238 property == FFmpegContentProperty::SUBTITLE_STREAM ||
239 property == FFmpegContentProperty::FILTERS
243 boost::mutex::scoped_lock lm (_mutex);
244 _have_valid_pieces = false;
247 Changed (property, frequent);
250 property == TextContentProperty::LINE_SPACING ||
251 property == TextContentProperty::OUTLINE_WIDTH ||
252 property == TextContentProperty::Y_SCALE ||
253 property == TextContentProperty::FADE_IN ||
254 property == TextContentProperty::FADE_OUT ||
255 property == ContentProperty::VIDEO_FRAME_RATE ||
256 property == TextContentProperty::USE ||
257 property == TextContentProperty::X_OFFSET ||
258 property == TextContentProperty::Y_OFFSET ||
259 property == TextContentProperty::X_SCALE ||
260 property == TextContentProperty::FONTS ||
261 property == TextContentProperty::TYPE ||
262 property == VideoContentProperty::CROP ||
263 property == VideoContentProperty::SCALE ||
264 property == VideoContentProperty::FADE_IN ||
265 property == VideoContentProperty::FADE_OUT
268 Changed (property, frequent);
273 Player::set_video_container_size (dcp::Size s)
276 boost::mutex::scoped_lock lm (_mutex);
278 if (s == _video_container_size) {
282 _video_container_size = s;
284 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
285 _black_image->make_black ();
288 Changed (PlayerProperty::VIDEO_CONTAINER_SIZE, false);
292 Player::playlist_changed ()
295 boost::mutex::scoped_lock lm (_mutex);
296 _have_valid_pieces = false;
299 Changed (PlayerProperty::PLAYLIST, false);
303 Player::film_changed (Film::Property p)
305 /* Here we should notice Film properties that affect our output, and
306 alert listeners that our output now would be different to how it was
307 last time we were run.
310 if (p == Film::CONTAINER) {
311 Changed (PlayerProperty::FILM_CONTAINER, false);
312 } else if (p == Film::VIDEO_FRAME_RATE) {
313 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
314 so we need new pieces here.
317 boost::mutex::scoped_lock lm (_mutex);
318 _have_valid_pieces = false;
320 Changed (PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
321 } else if (p == Film::AUDIO_PROCESSOR) {
322 if (_film->audio_processor ()) {
323 boost::mutex::scoped_lock lm (_mutex);
324 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
326 } else if (p == Film::AUDIO_CHANNELS) {
327 boost::mutex::scoped_lock lm (_mutex);
328 _audio_merger.clear ();
333 Player::transform_bitmap_texts (list<BitmapText> subs) const
335 list<PositionImage> all;
337 for (list<BitmapText>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
342 /* We will scale the subtitle up to fit _video_container_size */
343 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
349 dcp::YUV_TO_RGB_REC601,
350 i->image->pixel_format (),
355 lrint (_video_container_size.width * i->rectangle.x),
356 lrint (_video_container_size.height * i->rectangle.y)
365 shared_ptr<PlayerVideo>
366 Player::black_player_video_frame (Eyes eyes) const
368 return shared_ptr<PlayerVideo> (
370 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
373 _video_container_size,
374 _video_container_size,
377 PresetColourConversion::all().front().conversion,
378 boost::weak_ptr<Content>(),
379 boost::optional<Frame>()
385 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
387 DCPTime s = t - piece->content->position ();
388 s = min (piece->content->length_after_trim(), s);
389 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
391 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
392 then convert that ContentTime to frames at the content's rate. However this fails for
393 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
394 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
396 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
398 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
402 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
404 /* See comment in dcp_to_content_video */
405 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
406 return d + piece->content->position();
410 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
412 DCPTime s = t - piece->content->position ();
413 s = min (piece->content->length_after_trim(), s);
414 /* See notes in dcp_to_content_video */
415 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
419 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
421 /* See comment in dcp_to_content_video */
422 return DCPTime::from_frames (f, _film->audio_frame_rate())
423 - DCPTime (piece->content->trim_start(), piece->frc)
424 + piece->content->position();
428 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
430 DCPTime s = t - piece->content->position ();
431 s = min (piece->content->length_after_trim(), s);
432 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
436 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
438 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
441 list<shared_ptr<Font> >
442 Player::get_subtitle_fonts ()
444 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
446 if (!_have_valid_pieces) {
450 list<shared_ptr<Font> > fonts;
451 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
452 BOOST_FOREACH (shared_ptr<TextContent> j, i->content->text) {
453 /* XXX: things may go wrong if there are duplicate font IDs
454 with different font files.
456 list<shared_ptr<Font> > f = j->fonts ();
457 copy (f.begin(), f.end(), back_inserter (fonts));
464 /** Set this player never to produce any video data */
466 Player::set_ignore_video ()
468 boost::mutex::scoped_lock lm (_mutex);
469 _ignore_video = true;
470 _have_valid_pieces = false;
474 Player::set_ignore_audio ()
476 boost::mutex::scoped_lock lm (_mutex);
477 _ignore_audio = true;
478 _have_valid_pieces = false;
482 Player::set_ignore_text ()
484 boost::mutex::scoped_lock lm (_mutex);
488 /** Set the player to always burn open texts into the image regardless of the content settings */
490 Player::set_always_burn_open_subtitles ()
492 boost::mutex::scoped_lock lm (_mutex);
493 _always_burn_open_subtitles = true;
496 /** Sets up the player to be faster, possibly at the expense of quality */
500 boost::mutex::scoped_lock lm (_mutex);
502 _have_valid_pieces = false;
506 Player::set_play_referenced ()
508 boost::mutex::scoped_lock lm (_mutex);
509 _play_referenced = true;
510 _have_valid_pieces = false;
513 list<ReferencedReelAsset>
514 Player::get_reel_assets ()
516 /* Does not require a lock on _mutex as it's only called from DCPEncoder */
518 list<ReferencedReelAsset> a;
520 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
521 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
526 scoped_ptr<DCPDecoder> decoder;
528 decoder.reset (new DCPDecoder (j, _film->log(), false));
534 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
536 DCPOMATIC_ASSERT (j->video_frame_rate ());
537 double const cfr = j->video_frame_rate().get();
538 Frame const trim_start = j->trim_start().frames_round (cfr);
539 Frame const trim_end = j->trim_end().frames_round (cfr);
540 int const ffr = _film->video_frame_rate ();
542 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
543 if (j->reference_video ()) {
544 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
545 DCPOMATIC_ASSERT (ra);
546 ra->set_entry_point (ra->entry_point() + trim_start);
547 ra->set_duration (ra->duration() - trim_start - trim_end);
549 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
553 if (j->reference_audio ()) {
554 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
555 DCPOMATIC_ASSERT (ra);
556 ra->set_entry_point (ra->entry_point() + trim_start);
557 ra->set_duration (ra->duration() - trim_start - trim_end);
559 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
563 if (j->reference_text (TEXT_OPEN_SUBTITLE)) {
564 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
565 DCPOMATIC_ASSERT (ra);
566 ra->set_entry_point (ra->entry_point() + trim_start);
567 ra->set_duration (ra->duration() - trim_start - trim_end);
569 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
573 if (j->reference_text (TEXT_CLOSED_CAPTION)) {
574 shared_ptr<dcp::ReelAsset> ra = k->closed_caption ();
575 DCPOMATIC_ASSERT (ra);
576 ra->set_entry_point (ra->entry_point() + trim_start);
577 ra->set_duration (ra->duration() - trim_start - trim_end);
579 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
583 /* Assume that main picture duration is the length of the reel */
584 offset += k->main_picture()->duration ();
594 boost::mutex::scoped_lock lm (_mutex);
596 if (!_have_valid_pieces) {
597 /* This should only happen when we are under the control of the butler. In this case, _have_valid_pieces
598 will be false if something in the Player has changed and we are waiting for the butler to notice
599 and do a seek back to the place we were at before. During this time we don't want pass() to do anything,
600 as just after setup_pieces the new decoders will be back to time 0 until the seek has gone through. Just do nothing
601 here and assume that the seek will be forthcoming.
606 if (_playlist->length() == DCPTime()) {
607 /* Special case of an empty Film; just give one black frame */
608 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
612 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
614 shared_ptr<Piece> earliest_content;
615 optional<DCPTime> earliest_time;
617 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
622 DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
623 if (t > i->content->end()) {
627 /* Given two choices at the same time, pick the one with texts so we see it before
630 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) {
632 earliest_content = i;
646 if (earliest_content) {
650 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
651 earliest_time = _black.position ();
655 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
656 earliest_time = _silent.position ();
662 earliest_content->done = earliest_content->decoder->pass ();
665 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
666 _black.set_position (_black.position() + one_video_frame());
670 DCPTimePeriod period (_silent.period_at_position());
671 if (_last_audio_time) {
672 /* Sometimes the thing that happened last finishes fractionally before
673 this silence. Bodge the start time of the silence to fix it. I'm
674 not sure if this is the right solution --- maybe the last thing should
675 be padded `forward' rather than this thing padding `back'.
677 period.from = min(period.from, *_last_audio_time);
679 if (period.duration() > one_video_frame()) {
680 period.to = period.from + one_video_frame();
683 _silent.set_position (period.to);
691 /* Emit any audio that is ready */
693 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
694 of our streams, or the position of the _silent.
696 DCPTime pull_to = _film->length ();
697 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
698 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
699 pull_to = i->second.last_push_end;
702 if (!_silent.done() && _silent.position() < pull_to) {
703 pull_to = _silent.position();
706 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
707 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
708 if (_last_audio_time && i->second < *_last_audio_time) {
709 /* This new data comes before the last we emitted (or the last seek); discard it */
710 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
715 } else if (_last_audio_time && i->second > *_last_audio_time) {
716 /* There's a gap between this data and the last we emitted; fill with silence */
717 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
720 emit_audio (i->first, i->second);
725 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
726 do_emit_video(i->first, i->second);
733 /** @return Open subtitles for the frame at the given time, converted to images */
734 optional<PositionImage>
735 Player::open_subtitles_for_frame (DCPTime time) const
737 list<PositionImage> captions;
738 int const vfr = _film->video_frame_rate();
742 _active_texts[TEXT_OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles)
745 /* Bitmap subtitles */
746 list<PositionImage> c = transform_bitmap_texts (j.bitmap);
747 copy (c.begin(), c.end(), back_inserter (captions));
749 /* String subtitles (rendered to an image) */
750 if (!j.string.empty ()) {
751 list<PositionImage> s = render_text (j.string, j.fonts, _video_container_size, time, vfr);
752 copy (s.begin(), s.end(), back_inserter (captions));
756 if (captions.empty ()) {
757 return optional<PositionImage> ();
760 return merge (captions);
764 Player::video (weak_ptr<Piece> wp, ContentVideo video)
766 shared_ptr<Piece> piece = wp.lock ();
771 FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
772 if (frc.skip && (video.frame % 2) == 1) {
776 /* Time of the first frame we will emit */
777 DCPTime const time = content_video_to_dcp (piece, video.frame);
779 /* Discard if it's before the content's period or the last accurate seek. We can't discard
780 if it's after the content's period here as in that case we still need to fill any gap between
781 `now' and the end of the content's period.
783 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
787 /* Fill gaps that we discover now that we have some video which needs to be emitted.
788 This is where we need to fill to.
790 DCPTime fill_to = min (time, piece->content->end());
792 if (_last_video_time) {
793 DCPTime fill_from = max (*_last_video_time, piece->content->position());
794 LastVideoMap::const_iterator last = _last_video.find (wp);
795 if (_film->three_d()) {
796 Eyes fill_to_eyes = video.eyes;
797 if (fill_to == piece->content->end()) {
798 /* Don't fill after the end of the content */
799 fill_to_eyes = EYES_LEFT;
801 DCPTime j = fill_from;
802 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
803 if (eyes == EYES_BOTH) {
806 while (j < fill_to || eyes != fill_to_eyes) {
807 if (last != _last_video.end()) {
808 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
809 copy->set_eyes (eyes);
810 emit_video (copy, j);
812 emit_video (black_player_video_frame(eyes), j);
814 if (eyes == EYES_RIGHT) {
815 j += one_video_frame();
817 eyes = increment_eyes (eyes);
820 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
821 if (last != _last_video.end()) {
822 emit_video (last->second, j);
824 emit_video (black_player_video_frame(EYES_BOTH), j);
830 _last_video[wp].reset (
833 piece->content->video->crop (),
834 piece->content->video->fade (video.frame),
835 piece->content->video->scale().size (
836 piece->content->video, _video_container_size, _film->frame_size ()
838 _video_container_size,
841 piece->content->video->colour_conversion(),
848 for (int i = 0; i < frc.repeat; ++i) {
849 if (t < piece->content->end()) {
850 emit_video (_last_video[wp], t);
852 t += one_video_frame ();
857 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
859 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
861 shared_ptr<Piece> piece = wp.lock ();
866 shared_ptr<AudioContent> content = piece->content->audio;
867 DCPOMATIC_ASSERT (content);
869 /* Compute time in the DCP */
870 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
871 /* And the end of this block in the DCP */
872 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
874 /* Remove anything that comes before the start or after the end of the content */
875 if (time < piece->content->position()) {
876 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
878 /* This audio is entirely discarded */
881 content_audio.audio = cut.first;
883 } else if (time > piece->content->end()) {
886 } else if (end > piece->content->end()) {
887 Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate());
888 if (remaining_frames == 0) {
891 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
892 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
893 content_audio.audio = cut;
896 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
900 if (content->gain() != 0) {
901 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
902 gain->apply_gain (content->gain ());
903 content_audio.audio = gain;
908 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
912 if (_audio_processor) {
913 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
918 _audio_merger.push (content_audio.audio, time);
919 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
920 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
924 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentBitmapText subtitle)
926 shared_ptr<Piece> piece = wp.lock ();
927 shared_ptr<const TextContent> text = wc.lock ();
928 if (!piece || !text) {
932 /* Apply content's subtitle offsets */
933 subtitle.sub.rectangle.x += text->x_offset ();
934 subtitle.sub.rectangle.y += text->y_offset ();
936 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
937 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2);
938 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2);
940 /* Apply content's subtitle scale */
941 subtitle.sub.rectangle.width *= text->x_scale ();
942 subtitle.sub.rectangle.height *= text->y_scale ();
945 ps.bitmap.push_back (subtitle.sub);
946 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
948 _active_texts[subtitle.type()].add_from (wc, ps, from);
952 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentStringText subtitle)
954 shared_ptr<Piece> piece = wp.lock ();
955 shared_ptr<const TextContent> text = wc.lock ();
956 if (!piece || !text) {
961 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
963 if (from > piece->content->end()) {
967 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
968 s.set_h_position (s.h_position() + text->x_offset ());
969 s.set_v_position (s.v_position() + text->y_offset ());
970 float const xs = text->x_scale();
971 float const ys = text->y_scale();
972 float size = s.size();
974 /* Adjust size to express the common part of the scaling;
975 e.g. if xs = ys = 0.5 we scale size by 2.
977 if (xs > 1e-5 && ys > 1e-5) {
978 size *= 1 / min (1 / xs, 1 / ys);
982 /* Then express aspect ratio changes */
983 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
984 s.set_aspect_adjust (xs / ys);
987 s.set_in (dcp::Time(from.seconds(), 1000));
988 ps.string.push_back (StringText (s, text->outline_width()));
989 ps.add_fonts (text->fonts ());
992 _active_texts[subtitle.type()].add_from (wc, ps, from);
996 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const TextContent> wc, ContentTime to, TextType type)
998 if (!_active_texts[type].have (wc)) {
1002 shared_ptr<Piece> piece = wp.lock ();
1003 shared_ptr<const TextContent> text = wc.lock ();
1004 if (!piece || !text) {
1008 DCPTime const dcp_to = content_time_to_dcp (piece, to);
1010 if (dcp_to > piece->content->end()) {
1014 pair<PlayerText, DCPTime> from = _active_texts[type].add_to (wc, dcp_to);
1016 bool const always = (type == TEXT_OPEN_SUBTITLE && _always_burn_open_subtitles);
1017 if (text->use() && !always && !text->burn()) {
1018 Text (from.first, type, DCPTimePeriod (from.second, dcp_to));
1023 Player::seek (DCPTime time, bool accurate)
1025 boost::mutex::scoped_lock lm (_mutex);
1027 if (!_have_valid_pieces) {
1032 _shuffler->clear ();
1037 if (_audio_processor) {
1038 _audio_processor->flush ();
1041 _audio_merger.clear ();
1042 for (int i = 0; i < TEXT_COUNT; ++i) {
1043 _active_texts[i].clear ();
1046 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1047 if (time < i->content->position()) {
1048 /* Before; seek to the start of the content */
1049 i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
1051 } else if (i->content->position() <= time && time < i->content->end()) {
1052 /* During; seek to position */
1053 i->decoder->seek (dcp_to_content_time (i, time), accurate);
1056 /* After; this piece is done */
1062 _last_video_time = time;
1063 _last_video_eyes = EYES_LEFT;
1064 _last_audio_time = time;
1066 _last_video_time = optional<DCPTime>();
1067 _last_video_eyes = optional<Eyes>();
1068 _last_audio_time = optional<DCPTime>();
1071 _black.set_position (time);
1072 _silent.set_position (time);
1074 _last_video.clear ();
1078 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1080 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1081 player before the video that requires them.
1083 _delay.push_back (make_pair (pv, time));
1085 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1086 _last_video_time = time + one_video_frame();
1088 _last_video_eyes = increment_eyes (pv->eyes());
1090 if (_delay.size() < 3) {
1094 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1096 do_emit_video (to_do.first, to_do.second);
1100 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1102 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1103 for (int i = 0; i < TEXT_COUNT; ++i) {
1104 _active_texts[i].clear_before (time);
1108 optional<PositionImage> subtitles = open_subtitles_for_frame (time);
1110 pv->set_text (subtitles.get ());
1117 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1119 /* Log if the assert below is about to fail */
1120 if (_last_audio_time && time != *_last_audio_time) {
1121 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1124 /* This audio must follow on from the previous */
1125 DCPOMATIC_ASSERT (!_last_audio_time || time == *_last_audio_time);
1127 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1131 Player::fill_audio (DCPTimePeriod period)
1133 if (period.from == period.to) {
1137 DCPOMATIC_ASSERT (period.from < period.to);
1139 DCPTime t = period.from;
1140 while (t < period.to) {
1141 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1142 Frame const samples = block.frames_round(_film->audio_frame_rate());
1144 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1145 silence->make_silent ();
1146 emit_audio (silence, t);
1153 Player::one_video_frame () const
1155 return DCPTime::from_frames (1, _film->video_frame_rate ());
1158 pair<shared_ptr<AudioBuffers>, DCPTime>
1159 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1161 DCPTime const discard_time = discard_to - time;
1162 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1163 Frame remaining_frames = audio->frames() - discard_frames;
1164 if (remaining_frames <= 0) {
1165 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1167 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1168 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1169 return make_pair(cut, time + discard_time);
1173 Player::set_dcp_decode_reduction (optional<int> reduction)
1176 boost::mutex::scoped_lock lm (_mutex);
1178 if (reduction == _dcp_decode_reduction) {
1182 _dcp_decode_reduction = reduction;
1183 _have_valid_pieces = false;
1186 Changed (PlayerProperty::DCP_DECODE_REDUCTION, false);
1190 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1192 boost::mutex::scoped_lock lm (_mutex);
1194 if (_have_valid_pieces) {
1198 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1199 if (i->content == content) {
1200 return content_time_to_dcp (i, t);
1204 DCPOMATIC_ASSERT (false);