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 "caption_content.h"
44 #include "caption_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_caption (false)
94 , _play_referenced (false)
95 , _audio_merger (_film->audio_frame_rate())
98 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
99 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
100 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
101 set_video_container_size (_film->frame_size ());
103 film_changed (Film::AUDIO_PROCESSOR);
105 seek (DCPTime (), true);
114 Player::setup_pieces ()
119 _shuffler = new Shuffler();
120 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
122 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
124 if (!i->paths_valid ()) {
128 shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
129 FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
132 /* Not something that we can decode; e.g. Atmos content */
136 if (decoder->video && _ignore_video) {
137 decoder->video->set_ignore (true);
140 if (_ignore_caption) {
141 BOOST_FOREACH (shared_ptr<CaptionDecoder> i, decoder->caption) {
142 i->set_ignore (true);
146 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
148 dcp->set_decode_referenced (_play_referenced);
149 if (_play_referenced) {
150 dcp->set_forced_reduction (_dcp_decode_reduction);
154 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
155 _pieces.push_back (piece);
157 if (decoder->video) {
158 if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
159 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
160 decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
162 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
166 if (decoder->audio) {
167 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
170 list<shared_ptr<CaptionDecoder> >::const_iterator j = decoder->caption.begin();
172 while (j != decoder->caption.end()) {
173 (*j)->BitmapStart.connect (
174 bind(&Player::bitmap_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const CaptionContent>((*j)->content()), _1)
176 (*j)->PlainStart.connect (
177 bind(&Player::plain_text_start, this, weak_ptr<Piece>(piece), weak_ptr<const CaptionContent>((*j)->content()), _1)
180 bind(&Player::subtitle_stop, this, weak_ptr<Piece>(piece), weak_ptr<const CaptionContent>((*j)->content()), _1, _2)
187 _stream_states.clear ();
188 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
189 if (i->content->audio) {
190 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
191 _stream_states[j] = StreamState (i, i->content->position ());
196 _black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
197 _silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
199 _last_video_time = DCPTime ();
200 _last_video_eyes = EYES_BOTH;
201 _last_audio_time = DCPTime ();
202 _have_valid_pieces = true;
206 Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
208 shared_ptr<Content> c = w.lock ();
214 property == ContentProperty::POSITION ||
215 property == ContentProperty::LENGTH ||
216 property == ContentProperty::TRIM_START ||
217 property == ContentProperty::TRIM_END ||
218 property == ContentProperty::PATH ||
219 property == VideoContentProperty::FRAME_TYPE ||
220 property == VideoContentProperty::COLOUR_CONVERSION ||
221 property == AudioContentProperty::STREAMS ||
222 property == DCPContentProperty::NEEDS_ASSETS ||
223 property == DCPContentProperty::NEEDS_KDM ||
224 property == CaptionContentProperty::COLOUR ||
225 property == CaptionContentProperty::EFFECT ||
226 property == CaptionContentProperty::EFFECT_COLOUR ||
227 property == FFmpegContentProperty::SUBTITLE_STREAM ||
228 property == FFmpegContentProperty::FILTERS
231 _have_valid_pieces = false;
232 Changed (property, frequent);
235 property == CaptionContentProperty::LINE_SPACING ||
236 property == CaptionContentProperty::OUTLINE_WIDTH ||
237 property == CaptionContentProperty::Y_SCALE ||
238 property == CaptionContentProperty::FADE_IN ||
239 property == CaptionContentProperty::FADE_OUT ||
240 property == ContentProperty::VIDEO_FRAME_RATE ||
241 property == CaptionContentProperty::USE ||
242 property == CaptionContentProperty::X_OFFSET ||
243 property == CaptionContentProperty::Y_OFFSET ||
244 property == CaptionContentProperty::X_SCALE ||
245 property == CaptionContentProperty::FONTS ||
246 property == CaptionContentProperty::TYPE ||
247 property == VideoContentProperty::CROP ||
248 property == VideoContentProperty::SCALE ||
249 property == VideoContentProperty::FADE_IN ||
250 property == VideoContentProperty::FADE_OUT
253 Changed (property, frequent);
258 Player::set_video_container_size (dcp::Size s)
260 if (s == _video_container_size) {
264 _video_container_size = s;
266 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
267 _black_image->make_black ();
269 Changed (PlayerProperty::VIDEO_CONTAINER_SIZE, false);
273 Player::playlist_changed ()
275 _have_valid_pieces = false;
276 Changed (PlayerProperty::PLAYLIST, false);
280 Player::film_changed (Film::Property p)
282 /* Here we should notice Film properties that affect our output, and
283 alert listeners that our output now would be different to how it was
284 last time we were run.
287 if (p == Film::CONTAINER) {
288 Changed (PlayerProperty::FILM_CONTAINER, false);
289 } else if (p == Film::VIDEO_FRAME_RATE) {
290 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
291 so we need new pieces here.
293 _have_valid_pieces = false;
294 Changed (PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
295 } else if (p == Film::AUDIO_PROCESSOR) {
296 if (_film->audio_processor ()) {
297 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
299 } else if (p == Film::AUDIO_CHANNELS) {
300 _audio_merger.clear ();
305 Player::transform_bitmap_captions (list<BitmapCaption> subs) const
307 list<PositionImage> all;
309 for (list<BitmapCaption>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
314 /* We will scale the subtitle up to fit _video_container_size */
315 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
321 dcp::YUV_TO_RGB_REC601,
322 i->image->pixel_format (),
327 lrint (_video_container_size.width * i->rectangle.x),
328 lrint (_video_container_size.height * i->rectangle.y)
337 shared_ptr<PlayerVideo>
338 Player::black_player_video_frame (Eyes eyes) const
340 return shared_ptr<PlayerVideo> (
342 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
345 _video_container_size,
346 _video_container_size,
349 PresetColourConversion::all().front().conversion,
350 boost::weak_ptr<Content>(),
351 boost::optional<Frame>()
357 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
359 DCPTime s = t - piece->content->position ();
360 s = min (piece->content->length_after_trim(), s);
361 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
363 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
364 then convert that ContentTime to frames at the content's rate. However this fails for
365 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
366 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
368 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
370 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
374 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
376 /* See comment in dcp_to_content_video */
377 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
378 return d + piece->content->position();
382 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
384 DCPTime s = t - piece->content->position ();
385 s = min (piece->content->length_after_trim(), s);
386 /* See notes in dcp_to_content_video */
387 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
391 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
393 /* See comment in dcp_to_content_video */
394 return DCPTime::from_frames (f, _film->audio_frame_rate())
395 - DCPTime (piece->content->trim_start(), piece->frc)
396 + piece->content->position();
400 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
402 DCPTime s = t - piece->content->position ();
403 s = min (piece->content->length_after_trim(), s);
404 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
408 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
410 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
413 list<shared_ptr<Font> >
414 Player::get_subtitle_fonts ()
416 if (!_have_valid_pieces) {
420 list<shared_ptr<Font> > fonts;
421 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
422 BOOST_FOREACH (shared_ptr<CaptionContent> j, i->content->caption) {
423 /* XXX: things may go wrong if there are duplicate font IDs
424 with different font files.
426 list<shared_ptr<Font> > f = j->fonts ();
427 copy (f.begin(), f.end(), back_inserter (fonts));
434 /** Set this player never to produce any video data */
436 Player::set_ignore_video ()
438 _ignore_video = true;
442 Player::set_ignore_caption ()
444 _ignore_caption = true;
447 /** Set the player to always burn open captions into the image regardless of the content settings */
449 Player::set_always_burn_open_captions ()
451 _always_burn_open_captions = true;
454 /** Sets up the player to be faster, possibly at the expense of quality */
459 _have_valid_pieces = false;
463 Player::set_play_referenced ()
465 _play_referenced = true;
466 _have_valid_pieces = false;
469 list<ReferencedReelAsset>
470 Player::get_reel_assets ()
472 list<ReferencedReelAsset> a;
474 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
475 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
480 scoped_ptr<DCPDecoder> decoder;
482 decoder.reset (new DCPDecoder (j, _film->log(), false));
488 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
490 DCPOMATIC_ASSERT (j->video_frame_rate ());
491 double const cfr = j->video_frame_rate().get();
492 Frame const trim_start = j->trim_start().frames_round (cfr);
493 Frame const trim_end = j->trim_end().frames_round (cfr);
494 int const ffr = _film->video_frame_rate ();
496 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
497 if (j->reference_video ()) {
498 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
499 DCPOMATIC_ASSERT (ra);
500 ra->set_entry_point (ra->entry_point() + trim_start);
501 ra->set_duration (ra->duration() - trim_start - trim_end);
503 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
507 if (j->reference_audio ()) {
508 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
509 DCPOMATIC_ASSERT (ra);
510 ra->set_entry_point (ra->entry_point() + trim_start);
511 ra->set_duration (ra->duration() - trim_start - trim_end);
513 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
517 if (j->reference_caption (CAPTION_OPEN)) {
518 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
519 DCPOMATIC_ASSERT (ra);
520 ra->set_entry_point (ra->entry_point() + trim_start);
521 ra->set_duration (ra->duration() - trim_start - trim_end);
523 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
527 if (j->reference_caption (CAPTION_CLOSED)) {
528 shared_ptr<dcp::ReelAsset> ra = k->closed_caption ();
529 DCPOMATIC_ASSERT (ra);
530 ra->set_entry_point (ra->entry_point() + trim_start);
531 ra->set_duration (ra->duration() - trim_start - trim_end);
533 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
537 /* Assume that main picture duration is the length of the reel */
538 offset += k->main_picture()->duration ();
548 if (!_have_valid_pieces) {
552 if (_playlist->length() == DCPTime()) {
553 /* Special case of an empty Film; just give one black frame */
554 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
558 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
560 shared_ptr<Piece> earliest_content;
561 optional<DCPTime> earliest_time;
563 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
568 DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
569 if (t > i->content->end()) {
573 /* Given two choices at the same time, pick the one with captions so we see it before
576 if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->caption.empty())) {
578 earliest_content = i;
592 if (earliest_content) {
596 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
597 earliest_time = _black.position ();
601 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
602 earliest_time = _silent.position ();
608 earliest_content->done = earliest_content->decoder->pass ();
611 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
612 _black.set_position (_black.position() + one_video_frame());
616 DCPTimePeriod period (_silent.period_at_position());
617 if (_last_audio_time) {
618 /* Sometimes the thing that happened last finishes fractionally before
619 this silence. Bodge the start time of the silence to fix it. I'm
620 not sure if this is the right solution --- maybe the last thing should
621 be padded `forward' rather than this thing padding `back'.
623 period.from = min(period.from, *_last_audio_time);
625 if (period.duration() > one_video_frame()) {
626 period.to = period.from + one_video_frame();
629 _silent.set_position (period.to);
637 /* Emit any audio that is ready */
639 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
640 of our streams, or the position of the _silent.
642 DCPTime pull_to = _film->length ();
643 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
644 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
645 pull_to = i->second.last_push_end;
648 if (!_silent.done() && _silent.position() < pull_to) {
649 pull_to = _silent.position();
652 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
653 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
654 if (_last_audio_time && i->second < *_last_audio_time) {
655 /* This new data comes before the last we emitted (or the last seek); discard it */
656 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
661 } else if (_last_audio_time && i->second > *_last_audio_time) {
662 /* There's a gap between this data and the last we emitted; fill with silence */
663 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
666 emit_audio (i->first, i->second);
671 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
672 do_emit_video(i->first, i->second);
679 optional<PositionImage>
680 Player::captions_for_frame (DCPTime time) const
682 list<PositionImage> captions;
684 int const vfr = _film->video_frame_rate();
686 for (int i = 0; i < CAPTION_COUNT; ++i) {
687 bool const always = i == CAPTION_OPEN && _always_burn_open_captions;
690 _active_captions[i].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), always)
693 /* Image subtitles */
694 list<PositionImage> c = transform_bitmap_captions (j.image);
695 copy (c.begin(), c.end(), back_inserter (captions));
697 /* Text subtitles (rendered to an image) */
698 if (!j.text.empty ()) {
699 list<PositionImage> s = render_text (j.text, j.fonts, _video_container_size, time, vfr);
700 copy (s.begin(), s.end(), back_inserter (captions));
705 if (captions.empty ()) {
706 return optional<PositionImage> ();
709 return merge (captions);
713 Player::video (weak_ptr<Piece> wp, ContentVideo video)
715 shared_ptr<Piece> piece = wp.lock ();
720 FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
721 if (frc.skip && (video.frame % 2) == 1) {
725 /* Time of the first frame we will emit */
726 DCPTime const time = content_video_to_dcp (piece, video.frame);
728 /* Discard if it's before the content's period or the last accurate seek. We can't discard
729 if it's after the content's period here as in that case we still need to fill any gap between
730 `now' and the end of the content's period.
732 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
736 /* Fill gaps that we discover now that we have some video which needs to be emitted.
737 This is where we need to fill to.
739 DCPTime fill_to = min (time, piece->content->end());
741 if (_last_video_time) {
742 DCPTime fill_from = max (*_last_video_time, piece->content->position());
743 LastVideoMap::const_iterator last = _last_video.find (wp);
744 if (_film->three_d()) {
745 DCPTime j = fill_from;
746 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
747 if (eyes == EYES_BOTH) {
750 while (j < fill_to || eyes != video.eyes) {
751 if (last != _last_video.end()) {
752 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
753 copy->set_eyes (eyes);
754 emit_video (copy, j);
756 emit_video (black_player_video_frame(eyes), j);
758 if (eyes == EYES_RIGHT) {
759 j += one_video_frame();
761 eyes = increment_eyes (eyes);
764 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
765 if (last != _last_video.end()) {
766 emit_video (last->second, j);
768 emit_video (black_player_video_frame(EYES_BOTH), j);
774 _last_video[wp].reset (
777 piece->content->video->crop (),
778 piece->content->video->fade (video.frame),
779 piece->content->video->scale().size (
780 piece->content->video, _video_container_size, _film->frame_size ()
782 _video_container_size,
785 piece->content->video->colour_conversion(),
792 for (int i = 0; i < frc.repeat; ++i) {
793 if (t < piece->content->end()) {
794 emit_video (_last_video[wp], t);
796 t += one_video_frame ();
801 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
803 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
805 shared_ptr<Piece> piece = wp.lock ();
810 shared_ptr<AudioContent> content = piece->content->audio;
811 DCPOMATIC_ASSERT (content);
813 /* Compute time in the DCP */
814 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
815 /* And the end of this block in the DCP */
816 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
818 /* Remove anything that comes before the start or after the end of the content */
819 if (time < piece->content->position()) {
820 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
822 /* This audio is entirely discarded */
825 content_audio.audio = cut.first;
827 } else if (time > piece->content->end()) {
830 } else if (end > piece->content->end()) {
831 Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate());
832 if (remaining_frames == 0) {
835 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
836 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
837 content_audio.audio = cut;
840 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
844 if (content->gain() != 0) {
845 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
846 gain->apply_gain (content->gain ());
847 content_audio.audio = gain;
852 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
856 if (_audio_processor) {
857 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
862 _audio_merger.push (content_audio.audio, time);
863 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
864 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
868 Player::bitmap_text_start (weak_ptr<Piece> wp, weak_ptr<const CaptionContent> wc, ContentBitmapCaption subtitle)
870 shared_ptr<Piece> piece = wp.lock ();
871 shared_ptr<const CaptionContent> caption = wc.lock ();
872 if (!piece || !caption) {
876 /* Apply content's subtitle offsets */
877 subtitle.sub.rectangle.x += caption->x_offset ();
878 subtitle.sub.rectangle.y += caption->y_offset ();
880 /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
881 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((caption->x_scale() - 1) / 2);
882 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((caption->y_scale() - 1) / 2);
884 /* Apply content's subtitle scale */
885 subtitle.sub.rectangle.width *= caption->x_scale ();
886 subtitle.sub.rectangle.height *= caption->y_scale ();
889 ps.image.push_back (subtitle.sub);
890 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
892 _active_captions[subtitle.type()].add_from (wc, ps, from);
896 Player::plain_text_start (weak_ptr<Piece> wp, weak_ptr<const CaptionContent> wc, ContentTextCaption subtitle)
898 shared_ptr<Piece> piece = wp.lock ();
899 shared_ptr<const CaptionContent> caption = wc.lock ();
900 if (!piece || !caption) {
905 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
907 if (from > piece->content->end()) {
911 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
912 s.set_h_position (s.h_position() + caption->x_offset ());
913 s.set_v_position (s.v_position() + caption->y_offset ());
914 float const xs = caption->x_scale();
915 float const ys = caption->y_scale();
916 float size = s.size();
918 /* Adjust size to express the common part of the scaling;
919 e.g. if xs = ys = 0.5 we scale size by 2.
921 if (xs > 1e-5 && ys > 1e-5) {
922 size *= 1 / min (1 / xs, 1 / ys);
926 /* Then express aspect ratio changes */
927 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
928 s.set_aspect_adjust (xs / ys);
931 s.set_in (dcp::Time(from.seconds(), 1000));
932 ps.text.push_back (TextCaption (s, caption->outline_width()));
933 ps.add_fonts (caption->fonts ());
936 _active_captions[subtitle.type()].add_from (wc, ps, from);
940 Player::subtitle_stop (weak_ptr<Piece> wp, weak_ptr<const CaptionContent> wc, ContentTime to, CaptionType type)
942 if (!_active_captions[type].have (wc)) {
946 shared_ptr<Piece> piece = wp.lock ();
947 shared_ptr<const CaptionContent> caption = wc.lock ();
948 if (!piece || !caption) {
952 DCPTime const dcp_to = content_time_to_dcp (piece, to);
954 if (dcp_to > piece->content->end()) {
958 pair<PlayerCaption, DCPTime> from = _active_captions[type].add_to (wc, dcp_to);
960 bool const always = type == CAPTION_OPEN && _always_burn_open_captions;
961 if (caption->use() && !always && !caption->burn()) {
962 Caption (from.first, type, DCPTimePeriod (from.second, dcp_to));
967 Player::seek (DCPTime time, bool accurate)
969 if (!_have_valid_pieces) {
979 if (_audio_processor) {
980 _audio_processor->flush ();
983 _audio_merger.clear ();
984 for (int i = 0; i < CAPTION_COUNT; ++i) {
985 _active_captions[i].clear ();
988 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
989 if (time < i->content->position()) {
990 /* Before; seek to the start of the content */
991 i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
993 } else if (i->content->position() <= time && time < i->content->end()) {
994 /* During; seek to position */
995 i->decoder->seek (dcp_to_content_time (i, time), accurate);
998 /* After; this piece is done */
1004 _last_video_time = time;
1005 _last_video_eyes = EYES_LEFT;
1006 _last_audio_time = time;
1008 _last_video_time = optional<DCPTime>();
1009 _last_video_eyes = optional<Eyes>();
1010 _last_audio_time = optional<DCPTime>();
1013 _black.set_position (time);
1014 _silent.set_position (time);
1016 _last_video.clear ();
1020 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1022 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
1023 player before the video that requires them.
1025 _delay.push_back (make_pair (pv, time));
1027 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1028 _last_video_time = time + one_video_frame();
1030 _last_video_eyes = increment_eyes (pv->eyes());
1032 if (_delay.size() < 3) {
1036 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1038 do_emit_video (to_do.first, to_do.second);
1042 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1044 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1045 for (int i = 0; i < CAPTION_COUNT; ++i) {
1046 _active_captions[i].clear_before (time);
1050 optional<PositionImage> captions = captions_for_frame (time);
1052 pv->set_caption (captions.get ());
1059 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1061 /* Log if the assert below is about to fail */
1062 if (_last_audio_time && time != *_last_audio_time) {
1063 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1066 /* This audio must follow on from the previous */
1067 DCPOMATIC_ASSERT (!_last_audio_time || time == *_last_audio_time);
1069 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1073 Player::fill_audio (DCPTimePeriod period)
1075 if (period.from == period.to) {
1079 DCPOMATIC_ASSERT (period.from < period.to);
1081 DCPTime t = period.from;
1082 while (t < period.to) {
1083 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1084 Frame const samples = block.frames_round(_film->audio_frame_rate());
1086 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1087 silence->make_silent ();
1088 emit_audio (silence, t);
1095 Player::one_video_frame () const
1097 return DCPTime::from_frames (1, _film->video_frame_rate ());
1100 pair<shared_ptr<AudioBuffers>, DCPTime>
1101 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1103 DCPTime const discard_time = discard_to - time;
1104 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1105 Frame remaining_frames = audio->frames() - discard_frames;
1106 if (remaining_frames <= 0) {
1107 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1109 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1110 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1111 return make_pair(cut, time + discard_time);
1115 Player::set_dcp_decode_reduction (optional<int> reduction)
1117 if (reduction == _dcp_decode_reduction) {
1121 _dcp_decode_reduction = reduction;
1122 _have_valid_pieces = false;
1123 Changed (PlayerProperty::DCP_DECODE_REDUCTION, false);
1127 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
1129 if (_have_valid_pieces) {
1133 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
1134 if (i->content == content) {
1135 return content_time_to_dcp (i, t);
1139 DCPOMATIC_ASSERT (false);