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_subtitles.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 "subtitle_content.h"
44 #include "subtitle_decoder.h"
45 #include "ffmpeg_content.h"
46 #include "audio_content.h"
47 #include "content_subtitle.h"
48 #include "dcp_decoder.h"
49 #include "image_decoder.h"
50 #include "compose.hpp"
53 #include <dcp/reel_sound_asset.h>
54 #include <dcp/reel_subtitle_asset.h>
55 #include <dcp/reel_picture_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_subtitle (false)
93 , _always_burn_subtitles (false)
95 , _play_referenced (false)
96 , _audio_merger (_film->audio_frame_rate())
99 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
100 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
101 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
102 set_video_container_size (_film->frame_size ());
104 film_changed (Film::AUDIO_PROCESSOR);
106 seek (DCPTime (), true);
115 Player::setup_pieces ()
120 _shuffler = new Shuffler();
121 _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
123 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
125 if (!i->paths_valid ()) {
129 shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
130 FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
133 /* Not something that we can decode; e.g. Atmos content */
137 if (decoder->video && _ignore_video) {
138 decoder->video->set_ignore (true);
141 if (decoder->subtitle && _ignore_subtitle) {
142 decoder->subtitle->set_ignore (true);
145 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
147 dcp->set_decode_referenced (_play_referenced);
148 if (_play_referenced) {
149 dcp->set_forced_reduction (_dcp_decode_reduction);
153 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
154 _pieces.push_back (piece);
156 if (decoder->video) {
157 if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
158 /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
159 decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
161 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
165 if (decoder->audio) {
166 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
169 if (decoder->subtitle) {
170 decoder->subtitle->ImageStart.connect (bind (&Player::image_subtitle_start, this, weak_ptr<Piece> (piece), _1));
171 decoder->subtitle->TextStart.connect (bind (&Player::text_subtitle_start, this, weak_ptr<Piece> (piece), _1));
172 decoder->subtitle->Stop.connect (bind (&Player::subtitle_stop, this, weak_ptr<Piece> (piece), _1));
176 _stream_states.clear ();
177 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
178 if (i->content->audio) {
179 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
180 _stream_states[j] = StreamState (i, i->content->position ());
185 _black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
186 _silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
188 _last_video_time = DCPTime ();
189 _last_video_eyes = EYES_BOTH;
190 _last_audio_time = DCPTime ();
191 _have_valid_pieces = true;
195 Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
197 shared_ptr<Content> c = w.lock ();
203 property == ContentProperty::POSITION ||
204 property == ContentProperty::LENGTH ||
205 property == ContentProperty::TRIM_START ||
206 property == ContentProperty::TRIM_END ||
207 property == ContentProperty::PATH ||
208 property == VideoContentProperty::FRAME_TYPE ||
209 property == DCPContentProperty::NEEDS_ASSETS ||
210 property == DCPContentProperty::NEEDS_KDM ||
211 property == SubtitleContentProperty::COLOUR ||
212 property == SubtitleContentProperty::EFFECT ||
213 property == SubtitleContentProperty::EFFECT_COLOUR ||
214 property == FFmpegContentProperty::SUBTITLE_STREAM ||
215 property == FFmpegContentProperty::FILTERS ||
216 property == VideoContentProperty::COLOUR_CONVERSION
219 _have_valid_pieces = false;
220 Changed (property, frequent);
223 property == SubtitleContentProperty::LINE_SPACING ||
224 property == SubtitleContentProperty::OUTLINE_WIDTH ||
225 property == SubtitleContentProperty::Y_SCALE ||
226 property == SubtitleContentProperty::FADE_IN ||
227 property == SubtitleContentProperty::FADE_OUT ||
228 property == ContentProperty::VIDEO_FRAME_RATE ||
229 property == SubtitleContentProperty::USE ||
230 property == SubtitleContentProperty::X_OFFSET ||
231 property == SubtitleContentProperty::Y_OFFSET ||
232 property == SubtitleContentProperty::X_SCALE ||
233 property == SubtitleContentProperty::FONTS ||
234 property == VideoContentProperty::CROP ||
235 property == VideoContentProperty::SCALE ||
236 property == VideoContentProperty::FADE_IN ||
237 property == VideoContentProperty::FADE_OUT
240 Changed (property, frequent);
245 Player::set_video_container_size (dcp::Size s)
247 if (s == _video_container_size) {
251 _video_container_size = s;
253 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
254 _black_image->make_black ();
256 Changed (PlayerProperty::VIDEO_CONTAINER_SIZE, false);
260 Player::playlist_changed ()
262 _have_valid_pieces = false;
263 Changed (PlayerProperty::PLAYLIST, false);
267 Player::film_changed (Film::Property p)
269 /* Here we should notice Film properties that affect our output, and
270 alert listeners that our output now would be different to how it was
271 last time we were run.
274 if (p == Film::CONTAINER) {
275 Changed (PlayerProperty::FILM_CONTAINER, false);
276 } else if (p == Film::VIDEO_FRAME_RATE) {
277 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
278 so we need new pieces here.
280 _have_valid_pieces = false;
281 Changed (PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
282 } else if (p == Film::AUDIO_PROCESSOR) {
283 if (_film->audio_processor ()) {
284 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
286 } else if (p == Film::AUDIO_CHANNELS) {
287 _audio_merger.clear ();
292 Player::transform_image_subtitles (list<ImageSubtitle> subs) const
294 list<PositionImage> all;
296 for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
301 /* We will scale the subtitle up to fit _video_container_size */
302 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
304 /* Then we need a corrective translation, consisting of two parts:
306 * 1. that which is the result of the scaling of the subtitle by _video_container_size; this will be
307 * rect.x * _video_container_size.width and rect.y * _video_container_size.height.
309 * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
310 * (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
311 * (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
313 * Combining these two translations gives these expressions.
320 dcp::YUV_TO_RGB_REC601,
321 i->image->pixel_format (),
326 lrint (_video_container_size.width * i->rectangle.x),
327 lrint (_video_container_size.height * i->rectangle.y)
336 shared_ptr<PlayerVideo>
337 Player::black_player_video_frame (Eyes eyes) const
339 return shared_ptr<PlayerVideo> (
341 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
344 _video_container_size,
345 _video_container_size,
348 PresetColourConversion::all().front().conversion,
349 boost::weak_ptr<Content>(),
350 boost::optional<Frame>()
356 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
358 DCPTime s = t - piece->content->position ();
359 s = min (piece->content->length_after_trim(), s);
360 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
362 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
363 then convert that ContentTime to frames at the content's rate. However this fails for
364 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
365 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
367 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
369 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
373 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
375 /* See comment in dcp_to_content_video */
376 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
377 return d + piece->content->position();
381 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
383 DCPTime s = t - piece->content->position ();
384 s = min (piece->content->length_after_trim(), s);
385 /* See notes in dcp_to_content_video */
386 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
390 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
392 /* See comment in dcp_to_content_video */
393 return DCPTime::from_frames (f, _film->audio_frame_rate())
394 - DCPTime (piece->content->trim_start(), piece->frc)
395 + piece->content->position();
399 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
401 DCPTime s = t - piece->content->position ();
402 s = min (piece->content->length_after_trim(), s);
403 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
407 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
409 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
412 list<shared_ptr<Font> >
413 Player::get_subtitle_fonts ()
415 if (!_have_valid_pieces) {
419 list<shared_ptr<Font> > fonts;
420 BOOST_FOREACH (shared_ptr<Piece>& p, _pieces) {
421 if (p->content->subtitle) {
422 /* XXX: things may go wrong if there are duplicate font IDs
423 with different font files.
425 list<shared_ptr<Font> > f = p->content->subtitle->fonts ();
426 copy (f.begin(), f.end(), back_inserter (fonts));
433 /** Set this player never to produce any video data */
435 Player::set_ignore_video ()
437 _ignore_video = true;
441 Player::set_ignore_subtitle ()
443 _ignore_subtitle = true;
446 /** Set whether or not this player should always burn text subtitles into the image,
447 * regardless of the content settings.
448 * @param burn true to always burn subtitles, false to obey content settings.
451 Player::set_always_burn_subtitles (bool burn)
453 _always_burn_subtitles = burn;
456 /** Sets up the player to be faster, possibly at the expense of quality */
461 _have_valid_pieces = false;
465 Player::set_play_referenced ()
467 _play_referenced = true;
468 _have_valid_pieces = false;
471 list<ReferencedReelAsset>
472 Player::get_reel_assets ()
474 list<ReferencedReelAsset> a;
476 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
477 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
482 scoped_ptr<DCPDecoder> decoder;
484 decoder.reset (new DCPDecoder (j, _film->log(), false));
490 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
492 DCPOMATIC_ASSERT (j->video_frame_rate ());
493 double const cfr = j->video_frame_rate().get();
494 Frame const trim_start = j->trim_start().frames_round (cfr);
495 Frame const trim_end = j->trim_end().frames_round (cfr);
496 int const ffr = _film->video_frame_rate ();
498 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
499 if (j->reference_video ()) {
500 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
501 DCPOMATIC_ASSERT (ra);
502 ra->set_entry_point (ra->entry_point() + trim_start);
503 ra->set_duration (ra->duration() - trim_start - trim_end);
505 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
509 if (j->reference_audio ()) {
510 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
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_subtitle ()) {
520 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
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 /* Assume that main picture duration is the length of the reel */
530 offset += k->main_picture()->duration ();
540 if (!_have_valid_pieces) {
544 if (_playlist->length() == DCPTime()) {
545 /* Special case of an empty Film; just give one black frame */
546 emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
550 /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
552 shared_ptr<Piece> earliest_content;
553 optional<DCPTime> earliest_time;
555 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
560 DCPTime const t = content_time_to_dcp (i, i->decoder->position());
561 if (t > i->content->end()) {
565 /* Given two choices at the same time, pick the one with a subtitle so we see it before
568 if (!earliest_time || t < *earliest_time || (t == *earliest_time && i->decoder->subtitle)) {
570 earliest_content = i;
584 if (earliest_content) {
588 if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
589 earliest_time = _black.position ();
593 if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
594 earliest_time = _silent.position ();
600 earliest_content->done = earliest_content->decoder->pass ();
603 emit_video (black_player_video_frame(EYES_BOTH), _black.position());
604 _black.set_position (_black.position() + one_video_frame());
608 DCPTimePeriod period (_silent.period_at_position());
609 if (_last_audio_time) {
610 /* Sometimes the thing that happened last finishes fractionally before
611 this silence. Bodge the start time of the silence to fix it. I'm
612 not sure if this is the right solution --- maybe the last thing should
613 be padded `forward' rather than this thing padding `back'.
615 period.from = min(period.from, *_last_audio_time);
617 if (period.duration() > one_video_frame()) {
618 period.to = period.from + one_video_frame();
621 _silent.set_position (period.to);
629 /* Emit any audio that is ready */
631 /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one
632 of our streams, or the position of the _silent.
634 DCPTime pull_to = _film->length ();
635 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
636 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
637 pull_to = i->second.last_push_end;
640 if (!_silent.done() && _silent.position() < pull_to) {
641 pull_to = _silent.position();
644 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
645 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
646 if (_last_audio_time && i->second < *_last_audio_time) {
647 /* This new data comes before the last we emitted (or the last seek); discard it */
648 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
653 } else if (_last_audio_time && i->second > *_last_audio_time) {
654 /* There's a gap between this data and the last we emitted; fill with silence */
655 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
658 emit_audio (i->first, i->second);
663 for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
664 do_emit_video(i->first, i->second);
671 optional<PositionImage>
672 Player::subtitles_for_frame (DCPTime time) const
674 list<PositionImage> subtitles;
676 int const vfr = _film->video_frame_rate();
678 BOOST_FOREACH (PlayerSubtitles i, _active_subtitles.get_burnt (DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_subtitles)) {
680 /* Image subtitles */
681 list<PositionImage> c = transform_image_subtitles (i.image);
682 copy (c.begin(), c.end(), back_inserter (subtitles));
684 /* Text subtitles (rendered to an image) */
685 if (!i.text.empty ()) {
686 list<PositionImage> s = render_subtitles (i.text, i.fonts, _video_container_size, time, vfr);
687 copy (s.begin(), s.end(), back_inserter (subtitles));
691 if (subtitles.empty ()) {
692 return optional<PositionImage> ();
695 return merge (subtitles);
699 Player::video (weak_ptr<Piece> wp, ContentVideo video)
701 shared_ptr<Piece> piece = wp.lock ();
706 FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
707 if (frc.skip && (video.frame % 2) == 1) {
711 /* Time of the first frame we will emit */
712 DCPTime const time = content_video_to_dcp (piece, video.frame);
714 /* Discard if it's before the content's period or the last accurate seek. We can't discard
715 if it's after the content's period here as in that case we still need to fill any gap between
716 `now' and the end of the content's period.
718 if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
722 /* Fill gaps that we discover now that we have some video which needs to be emitted.
723 This is where we need to fill to.
725 DCPTime fill_to = min (time, piece->content->end());
727 if (_last_video_time) {
728 DCPTime fill_from = max (*_last_video_time, piece->content->position());
729 LastVideoMap::const_iterator last = _last_video.find (wp);
730 if (_film->three_d()) {
731 DCPTime j = fill_from;
732 Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
733 if (eyes == EYES_BOTH) {
736 while (j < fill_to || eyes != video.eyes) {
737 if (last != _last_video.end()) {
738 shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
739 copy->set_eyes (eyes);
740 emit_video (copy, j);
742 emit_video (black_player_video_frame(eyes), j);
744 if (eyes == EYES_RIGHT) {
745 j += one_video_frame();
747 eyes = increment_eyes (eyes);
750 for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
751 if (last != _last_video.end()) {
752 emit_video (last->second, j);
754 emit_video (black_player_video_frame(EYES_BOTH), j);
760 _last_video[wp].reset (
763 piece->content->video->crop (),
764 piece->content->video->fade (video.frame),
765 piece->content->video->scale().size (
766 piece->content->video, _video_container_size, _film->frame_size ()
768 _video_container_size,
771 piece->content->video->colour_conversion(),
778 for (int i = 0; i < frc.repeat; ++i) {
779 if (t < piece->content->end()) {
780 emit_video (_last_video[wp], t);
782 t += one_video_frame ();
787 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
789 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
791 shared_ptr<Piece> piece = wp.lock ();
796 shared_ptr<AudioContent> content = piece->content->audio;
797 DCPOMATIC_ASSERT (content);
799 /* Compute time in the DCP */
800 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
801 /* And the end of this block in the DCP */
802 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
804 /* Remove anything that comes before the start or after the end of the content */
805 if (time < piece->content->position()) {
806 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
808 /* This audio is entirely discarded */
811 content_audio.audio = cut.first;
813 } else if (time > piece->content->end()) {
816 } else if (end > piece->content->end()) {
817 Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate());
818 if (remaining_frames == 0) {
821 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
822 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
823 content_audio.audio = cut;
826 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
830 if (content->gain() != 0) {
831 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
832 gain->apply_gain (content->gain ());
833 content_audio.audio = gain;
838 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
842 if (_audio_processor) {
843 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
848 _audio_merger.push (content_audio.audio, time);
849 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
850 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
854 Player::image_subtitle_start (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
856 shared_ptr<Piece> piece = wp.lock ();
861 /* Apply content's subtitle offsets */
862 subtitle.sub.rectangle.x += piece->content->subtitle->x_offset ();
863 subtitle.sub.rectangle.y += piece->content->subtitle->y_offset ();
865 /* Apply content's subtitle scale */
866 subtitle.sub.rectangle.width *= piece->content->subtitle->x_scale ();
867 subtitle.sub.rectangle.height *= piece->content->subtitle->y_scale ();
869 /* Apply a corrective translation to keep the subtitle centred after that scale */
870 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * (piece->content->subtitle->x_scale() - 1);
871 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * (piece->content->subtitle->y_scale() - 1);
874 ps.image.push_back (subtitle.sub);
875 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
877 _active_subtitles.add_from (wp, ps, from);
881 Player::text_subtitle_start (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
883 shared_ptr<Piece> piece = wp.lock ();
889 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
891 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
892 s.set_h_position (s.h_position() + piece->content->subtitle->x_offset ());
893 s.set_v_position (s.v_position() + piece->content->subtitle->y_offset ());
894 float const xs = piece->content->subtitle->x_scale();
895 float const ys = piece->content->subtitle->y_scale();
896 float size = s.size();
898 /* Adjust size to express the common part of the scaling;
899 e.g. if xs = ys = 0.5 we scale size by 2.
901 if (xs > 1e-5 && ys > 1e-5) {
902 size *= 1 / min (1 / xs, 1 / ys);
906 /* Then express aspect ratio changes */
907 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
908 s.set_aspect_adjust (xs / ys);
911 s.set_in (dcp::Time(from.seconds(), 1000));
912 ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width()));
913 ps.add_fonts (piece->content->subtitle->fonts ());
916 _active_subtitles.add_from (wp, ps, from);
920 Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
922 if (!_active_subtitles.have (wp)) {
926 shared_ptr<Piece> piece = wp.lock ();
931 DCPTime const dcp_to = content_time_to_dcp (piece, to);
933 pair<PlayerSubtitles, DCPTime> from = _active_subtitles.add_to (wp, dcp_to);
935 if (piece->content->subtitle->use() && !_always_burn_subtitles && !piece->content->subtitle->burn()) {
936 Subtitle (from.first, DCPTimePeriod (from.second, dcp_to));
941 Player::seek (DCPTime time, bool accurate)
943 if (!_have_valid_pieces) {
953 if (_audio_processor) {
954 _audio_processor->flush ();
957 _audio_merger.clear ();
958 _active_subtitles.clear ();
960 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
961 if (time < i->content->position()) {
962 /* Before; seek to 0 */
963 i->decoder->seek (ContentTime(), accurate);
965 } else if (i->content->position() <= time && time < i->content->end()) {
966 /* During; seek to position */
967 i->decoder->seek (dcp_to_content_time (i, time), accurate);
970 /* After; this piece is done */
976 _last_video_time = time;
977 _last_video_eyes = EYES_LEFT;
978 _last_audio_time = time;
980 _last_video_time = optional<DCPTime>();
981 _last_video_eyes = optional<Eyes>();
982 _last_audio_time = optional<DCPTime>();
985 _black.set_position (time);
986 _silent.set_position (time);
988 _last_video.clear ();
992 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
994 /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
995 player before the video that requires them.
997 _delay.push_back (make_pair (pv, time));
999 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1000 _last_video_time = time + one_video_frame();
1002 _last_video_eyes = increment_eyes (pv->eyes());
1004 if (_delay.size() < 3) {
1008 pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
1010 do_emit_video (to_do.first, to_do.second);
1014 Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
1016 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
1017 _active_subtitles.clear_before (time);
1020 optional<PositionImage> subtitles = subtitles_for_frame (time);
1022 pv->set_subtitle (subtitles.get ());
1029 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
1031 /* Log if the assert below is about to fail */
1032 if (_last_audio_time && time != *_last_audio_time) {
1033 _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
1036 /* This audio must follow on from the previous, but I'll remove this check for the 2.12.x release */
1037 // DCPOMATIC_ASSERT (!_last_audio_time || time == *_last_audio_time);
1039 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
1043 Player::fill_audio (DCPTimePeriod period)
1045 if (period.from == period.to) {
1049 DCPOMATIC_ASSERT (period.from < period.to);
1051 DCPTime t = period.from;
1052 while (t < period.to) {
1053 DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
1054 Frame const samples = block.frames_round(_film->audio_frame_rate());
1056 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
1057 silence->make_silent ();
1058 emit_audio (silence, t);
1065 Player::one_video_frame () const
1067 return DCPTime::from_frames (1, _film->video_frame_rate ());
1070 pair<shared_ptr<AudioBuffers>, DCPTime>
1071 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
1073 DCPTime const discard_time = discard_to - time;
1074 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
1075 Frame remaining_frames = audio->frames() - discard_frames;
1076 if (remaining_frames <= 0) {
1077 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
1079 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
1080 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
1081 return make_pair(cut, time + discard_time);
1085 Player::set_dcp_decode_reduction (optional<int> reduction)
1087 if (reduction == _dcp_decode_reduction) {
1091 _dcp_decode_reduction = reduction;
1092 _have_valid_pieces = false;
1093 Changed (PlayerProperty::DCP_DECODE_REDUCTION, false);