2 Copyright (C) 2013-2017 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"
52 #include <dcp/reel_sound_asset.h>
53 #include <dcp/reel_subtitle_asset.h>
54 #include <dcp/reel_picture_asset.h>
55 #include <boost/foreach.hpp>
62 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
74 using boost::shared_ptr;
75 using boost::weak_ptr;
76 using boost::dynamic_pointer_cast;
77 using boost::optional;
78 using boost::scoped_ptr;
80 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
82 , _playlist (playlist)
83 , _have_valid_pieces (false)
84 , _ignore_video (false)
85 , _ignore_audio (false)
86 , _always_burn_subtitles (false)
88 , _play_referenced (false)
89 , _audio_merger (_film->audio_frame_rate())
91 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
92 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
93 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
94 set_video_container_size (_film->frame_size ());
96 film_changed (Film::AUDIO_PROCESSOR);
98 seek (DCPTime (), true);
102 Player::setup_pieces ()
106 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
108 if (!i->paths_valid ()) {
112 shared_ptr<Decoder> decoder = decoder_factory (i, _film->log());
113 FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
116 /* Not something that we can decode; e.g. Atmos content */
120 if (decoder->video && _ignore_video) {
121 decoder->video->set_ignore ();
124 if (decoder->audio && _ignore_audio) {
125 decoder->audio->set_ignore ();
128 shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
129 if (dcp && _play_referenced) {
130 dcp->set_decode_referenced ();
133 shared_ptr<Piece> piece (new Piece (i, decoder, frc));
134 _pieces.push_back (piece);
136 if (decoder->video) {
137 decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece> (piece), _1));
140 if (decoder->audio) {
141 decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
144 if (decoder->subtitle) {
145 decoder->subtitle->ImageStart.connect (bind (&Player::image_subtitle_start, this, weak_ptr<Piece> (piece), _1));
146 decoder->subtitle->TextStart.connect (bind (&Player::text_subtitle_start, this, weak_ptr<Piece> (piece), _1));
147 decoder->subtitle->Stop.connect (bind (&Player::subtitle_stop, this, weak_ptr<Piece> (piece), _1));
151 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
152 if (i->content->audio) {
153 BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
154 _stream_states[j] = StreamState (i, i->content->position ());
159 if (!_play_referenced) {
160 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
161 shared_ptr<DCPContent> dc = dynamic_pointer_cast<DCPContent> (i->content);
163 if (dc->reference_video()) {
164 _no_video.push_back (DCPTimePeriod (dc->position(), dc->end()));
166 if (dc->reference_audio()) {
167 _no_audio.push_back (DCPTimePeriod (dc->position(), dc->end()));
173 _last_video_time = DCPTime ();
174 _last_audio_time = DCPTime ();
175 _have_valid_pieces = true;
179 Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
181 shared_ptr<Content> c = w.lock ();
187 property == ContentProperty::POSITION ||
188 property == ContentProperty::LENGTH ||
189 property == ContentProperty::TRIM_START ||
190 property == ContentProperty::TRIM_END ||
191 property == ContentProperty::PATH ||
192 property == VideoContentProperty::FRAME_TYPE ||
193 property == DCPContentProperty::NEEDS_ASSETS ||
194 property == DCPContentProperty::NEEDS_KDM ||
195 property == SubtitleContentProperty::COLOUR ||
196 property == SubtitleContentProperty::OUTLINE ||
197 property == SubtitleContentProperty::SHADOW ||
198 property == SubtitleContentProperty::EFFECT_COLOUR ||
199 property == FFmpegContentProperty::SUBTITLE_STREAM ||
200 property == VideoContentProperty::COLOUR_CONVERSION
203 _have_valid_pieces = false;
207 property == SubtitleContentProperty::LINE_SPACING ||
208 property == SubtitleContentProperty::OUTLINE_WIDTH ||
209 property == SubtitleContentProperty::Y_SCALE ||
210 property == SubtitleContentProperty::FADE_IN ||
211 property == SubtitleContentProperty::FADE_OUT ||
212 property == ContentProperty::VIDEO_FRAME_RATE ||
213 property == SubtitleContentProperty::USE ||
214 property == SubtitleContentProperty::X_OFFSET ||
215 property == SubtitleContentProperty::Y_OFFSET ||
216 property == SubtitleContentProperty::X_SCALE ||
217 property == SubtitleContentProperty::FONTS ||
218 property == VideoContentProperty::CROP ||
219 property == VideoContentProperty::SCALE ||
220 property == VideoContentProperty::FADE_IN ||
221 property == VideoContentProperty::FADE_OUT
229 Player::set_video_container_size (dcp::Size s)
231 if (s == _video_container_size) {
235 _video_container_size = s;
237 _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
238 _black_image->make_black ();
244 Player::playlist_changed ()
246 _have_valid_pieces = false;
251 Player::film_changed (Film::Property p)
253 /* Here we should notice Film properties that affect our output, and
254 alert listeners that our output now would be different to how it was
255 last time we were run.
258 if (p == Film::CONTAINER) {
260 } else if (p == Film::VIDEO_FRAME_RATE) {
261 /* Pieces contain a FrameRateChange which contains the DCP frame rate,
262 so we need new pieces here.
264 _have_valid_pieces = false;
266 } else if (p == Film::AUDIO_PROCESSOR) {
267 if (_film->audio_processor ()) {
268 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
274 Player::transform_image_subtitles (list<ImageSubtitle> subs) const
276 list<PositionImage> all;
278 for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
283 /* We will scale the subtitle up to fit _video_container_size */
284 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
286 /* Then we need a corrective translation, consisting of two parts:
288 * 1. that which is the result of the scaling of the subtitle by _video_container_size; this will be
289 * rect.x * _video_container_size.width and rect.y * _video_container_size.height.
291 * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
292 * (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
293 * (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
295 * Combining these two translations gives these expressions.
302 dcp::YUV_TO_RGB_REC601,
303 i->image->pixel_format (),
308 lrint (_video_container_size.width * i->rectangle.x),
309 lrint (_video_container_size.height * i->rectangle.y)
318 shared_ptr<PlayerVideo>
319 Player::black_player_video_frame () const
321 return shared_ptr<PlayerVideo> (
323 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
326 _video_container_size,
327 _video_container_size,
330 PresetColourConversion::all().front().conversion
336 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
338 DCPTime s = t - piece->content->position ();
339 s = min (piece->content->length_after_trim(), s);
340 s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
342 /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
343 then convert that ContentTime to frames at the content's rate. However this fails for
344 situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
345 enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
347 Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
349 return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
353 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
355 /* See comment in dcp_to_content_video */
356 DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime (piece->content->trim_start (), piece->frc);
357 return max (DCPTime (), d + piece->content->position ());
361 Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
363 DCPTime s = t - piece->content->position ();
364 s = min (piece->content->length_after_trim(), s);
365 /* See notes in dcp_to_content_video */
366 return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
370 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
372 /* See comment in dcp_to_content_video */
373 DCPTime const d = DCPTime::from_frames (f, _film->audio_frame_rate()) - DCPTime (piece->content->trim_start(), piece->frc);
374 return max (DCPTime (), d + piece->content->position ());
378 Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
380 DCPTime s = t - piece->content->position ();
381 s = min (piece->content->length_after_trim(), s);
382 return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
386 Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
388 return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
391 list<shared_ptr<Font> >
392 Player::get_subtitle_fonts ()
394 if (!_have_valid_pieces) {
398 list<shared_ptr<Font> > fonts;
399 BOOST_FOREACH (shared_ptr<Piece>& p, _pieces) {
400 if (p->content->subtitle) {
401 /* XXX: things may go wrong if there are duplicate font IDs
402 with different font files.
404 list<shared_ptr<Font> > f = p->content->subtitle->fonts ();
405 copy (f.begin(), f.end(), back_inserter (fonts));
412 /** Set this player never to produce any video data */
414 Player::set_ignore_video ()
416 _ignore_video = true;
419 /** Set whether or not this player should always burn text subtitles into the image,
420 * regardless of the content settings.
421 * @param burn true to always burn subtitles, false to obey content settings.
424 Player::set_always_burn_subtitles (bool burn)
426 _always_burn_subtitles = burn;
433 _have_valid_pieces = false;
437 Player::set_play_referenced ()
439 _play_referenced = true;
440 _have_valid_pieces = false;
443 list<ReferencedReelAsset>
444 Player::get_reel_assets ()
446 list<ReferencedReelAsset> a;
448 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
449 shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
454 scoped_ptr<DCPDecoder> decoder;
456 decoder.reset (new DCPDecoder (j, _film->log()));
462 BOOST_FOREACH (shared_ptr<dcp::Reel> k, decoder->reels()) {
464 DCPOMATIC_ASSERT (j->video_frame_rate ());
465 double const cfr = j->video_frame_rate().get();
466 Frame const trim_start = j->trim_start().frames_round (cfr);
467 Frame const trim_end = j->trim_end().frames_round (cfr);
468 int const ffr = _film->video_frame_rate ();
470 DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate());
471 if (j->reference_video ()) {
472 shared_ptr<dcp::ReelAsset> ra = k->main_picture ();
473 DCPOMATIC_ASSERT (ra);
474 ra->set_entry_point (ra->entry_point() + trim_start);
475 ra->set_duration (ra->duration() - trim_start - trim_end);
477 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
481 if (j->reference_audio ()) {
482 shared_ptr<dcp::ReelAsset> ra = k->main_sound ();
483 DCPOMATIC_ASSERT (ra);
484 ra->set_entry_point (ra->entry_point() + trim_start);
485 ra->set_duration (ra->duration() - trim_start - trim_end);
487 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
491 if (j->reference_subtitle ()) {
492 shared_ptr<dcp::ReelAsset> ra = k->main_subtitle ();
493 DCPOMATIC_ASSERT (ra);
494 ra->set_entry_point (ra->entry_point() + trim_start);
495 ra->set_duration (ra->duration() - trim_start - trim_end);
497 ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr)))
501 /* Assume that main picture duration is the length of the reel */
502 offset += k->main_picture()->duration ();
512 if (!_have_valid_pieces) {
518 if (_last_video_time && !_playlist->video_content_at(*_last_video_time) && *_last_video_time < _playlist->length()) {
519 /* _last_video_time is the time just after the last video we emitted, and there is no video content
520 at this time so we need to emit some black.
522 emit_video (black_player_video_frame(), *_last_video_time);
524 } else if (_playlist->length() == DCPTime()) {
525 /* Special case of an empty Film; just give one black frame */
526 emit_video (black_player_video_frame(), DCPTime());
530 if (_last_audio_time && !_playlist->audio_content_at(*_last_audio_time) && *_last_audio_time < _playlist->length()) {
531 /* _last_audio_time is the time just after the last audio we emitted. There is no audio here
532 so we need to emit some silence.
534 shared_ptr<Content> next = _playlist->next_audio_content(*_last_audio_time);
535 DCPTimePeriod period (*_last_audio_time, next ? next->position() : _playlist->length());
536 if (period.duration() > one_video_frame()) {
537 period = DCPTimePeriod (*_last_audio_time, *_last_audio_time + one_video_frame());
543 /* Now pass() the decoder which is farthest behind where we are */
545 shared_ptr<Piece> earliest;
546 DCPTime earliest_content;
548 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
550 DCPTime const t = content_time_to_dcp (i, i->decoder->position());
551 if (!earliest || t < earliest_content) {
552 earliest_content = t;
558 if (!filled && earliest) {
559 earliest->done = earliest->decoder->pass ();
562 /* Emit any audio that is ready */
564 DCPTime pull_to = _playlist->length ();
565 for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
566 if (!i->second.piece->done && i->second.last_push_end < pull_to) {
567 pull_to = i->second.last_push_end;
571 list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
572 for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
573 if (_last_audio_time && i->second < *_last_audio_time) {
574 /* There has been an accurate seek and we have received some audio before the seek time;
577 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
584 if (_last_audio_time) {
585 fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
588 emit_audio (i->first, i->second);
591 return !earliest && !filled;
594 optional<PositionImage>
595 Player::subtitles_for_frame (DCPTime time) const
597 list<PositionImage> subtitles;
599 BOOST_FOREACH (PlayerSubtitles i, _active_subtitles.get_burnt (time, _always_burn_subtitles)) {
601 /* Image subtitles */
602 list<PositionImage> c = transform_image_subtitles (i.image);
603 copy (c.begin(), c.end(), back_inserter (subtitles));
605 /* Text subtitles (rendered to an image) */
606 if (!i.text.empty ()) {
607 list<PositionImage> s = render_subtitles (i.text, i.fonts, _video_container_size, time);
608 copy (s.begin(), s.end(), back_inserter (subtitles));
612 if (subtitles.empty ()) {
613 return optional<PositionImage> ();
616 return merge (subtitles);
620 Player::video (weak_ptr<Piece> wp, ContentVideo video)
622 shared_ptr<Piece> piece = wp.lock ();
627 FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
628 if (frc.skip && (video.frame % 2) == 1) {
632 /* Time and period of the frame we will emit */
633 DCPTime const time = content_video_to_dcp (piece, video.frame);
634 DCPTimePeriod const period (time, time + one_video_frame());
636 /* Fill gaps that we discover now that we have some video which needs to be emitted */
638 optional<DCPTime> fill_to;
639 if (_last_video_time) {
640 fill_to = _last_video_time;
644 /* XXX: this may not work for 3D */
645 BOOST_FOREACH (DCPTimePeriod i, subtract(DCPTimePeriod (*fill_to, time), _no_video)) {
646 for (DCPTime j = i.from; j < i.to; j += one_video_frame()) {
647 LastVideoMap::const_iterator k = _last_video.find (wp);
648 if (k != _last_video.end ()) {
649 emit_video (k->second, j);
651 emit_video (black_player_video_frame(), j);
657 /* Discard if it's outside the content's period or if it's before the last accurate seek */
659 time < piece->content->position() ||
660 time >= piece->content->end() ||
661 (_last_video_time && time < *_last_video_time)) {
665 _last_video[wp].reset (
668 piece->content->video->crop (),
669 piece->content->video->fade (video.frame),
670 piece->content->video->scale().size (
671 piece->content->video, _video_container_size, _film->frame_size ()
673 _video_container_size,
676 piece->content->video->colour_conversion ()
680 emit_video (_last_video[wp], time);
683 /** Do our common processing on some audio */
685 Player::audio_transform (shared_ptr<AudioContent> content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time)
687 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
691 if (content->gain() != 0) {
692 shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
693 gain->apply_gain (content->gain ());
694 content_audio.audio = gain;
699 content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
703 if (_audio_processor) {
704 content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
709 _audio_merger.push (content_audio.audio, time);
710 DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
711 _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
715 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
717 DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
719 shared_ptr<Piece> piece = wp.lock ();
724 shared_ptr<AudioContent> content = piece->content->audio;
725 DCPOMATIC_ASSERT (content);
727 /* Compute time in the DCP */
728 DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000.0);
729 /* And the end of this block in the DCP */
730 DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
732 /* Remove anything that comes before the start or after the end of the content */
733 if (time < piece->content->position()) {
734 pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
736 /* This audio is entirely discarded */
739 content_audio.audio = cut.first;
741 } else if (time > piece->content->end()) {
744 } else if (end > piece->content->end()) {
745 Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate());
746 if (remaining_frames == 0) {
749 shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
750 cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
751 content_audio.audio = cut;
754 audio_transform (content, stream, content_audio, time);
758 Player::image_subtitle_start (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
760 shared_ptr<Piece> piece = wp.lock ();
765 /* Apply content's subtitle offsets */
766 subtitle.sub.rectangle.x += piece->content->subtitle->x_offset ();
767 subtitle.sub.rectangle.y += piece->content->subtitle->y_offset ();
769 /* Apply content's subtitle scale */
770 subtitle.sub.rectangle.width *= piece->content->subtitle->x_scale ();
771 subtitle.sub.rectangle.height *= piece->content->subtitle->y_scale ();
773 /* Apply a corrective translation to keep the subtitle centred after that scale */
774 subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * (piece->content->subtitle->x_scale() - 1);
775 subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * (piece->content->subtitle->y_scale() - 1);
778 ps.image.push_back (subtitle.sub);
779 DCPTime from (content_time_to_dcp (piece, subtitle.from()));
781 _active_subtitles.add_from (wp, ps, from);
785 Player::text_subtitle_start (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
787 shared_ptr<Piece> piece = wp.lock ();
793 DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
795 BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
796 s.set_h_position (s.h_position() + piece->content->subtitle->x_offset ());
797 s.set_v_position (s.v_position() + piece->content->subtitle->y_offset ());
798 float const xs = piece->content->subtitle->x_scale();
799 float const ys = piece->content->subtitle->y_scale();
800 float size = s.size();
802 /* Adjust size to express the common part of the scaling;
803 e.g. if xs = ys = 0.5 we scale size by 2.
805 if (xs > 1e-5 && ys > 1e-5) {
806 size *= 1 / min (1 / xs, 1 / ys);
810 /* Then express aspect ratio changes */
811 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
812 s.set_aspect_adjust (xs / ys);
815 s.set_in (dcp::Time(from.seconds(), 1000));
816 ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width()));
817 ps.add_fonts (piece->content->subtitle->fonts ());
820 _active_subtitles.add_from (wp, ps, from);
824 Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
826 if (!_active_subtitles.have (wp)) {
830 shared_ptr<Piece> piece = wp.lock ();
835 DCPTime const dcp_to = content_time_to_dcp (piece, to);
837 pair<PlayerSubtitles, DCPTime> from = _active_subtitles.add_to (wp, dcp_to);
839 if (piece->content->subtitle->use() && !_always_burn_subtitles && !piece->content->subtitle->burn()) {
840 Subtitle (from.first, DCPTimePeriod (from.second, dcp_to));
845 Player::seek (DCPTime time, bool accurate)
847 if (_audio_processor) {
848 _audio_processor->flush ();
851 _audio_merger.clear ();
852 _active_subtitles.clear ();
854 BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
855 if (time < i->content->position()) {
856 /* Before; seek to 0 */
857 i->decoder->seek (ContentTime(), accurate);
859 } else if (i->content->position() <= time && time < i->content->end()) {
860 /* During; seek to position */
861 i->decoder->seek (dcp_to_content_time (i, time), accurate);
864 /* After; this piece is done */
870 _last_video_time = time;
871 _last_audio_time = time;
873 _last_video_time = optional<DCPTime>();
874 _last_audio_time = optional<DCPTime>();
877 _last_video.clear ();
881 Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
883 optional<PositionImage> subtitles = subtitles_for_frame (time);
885 pv->set_subtitle (subtitles.get ());
888 cout << "Player emit @ " << to_string(time) << "\n";
891 if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
892 _last_video_time = time + one_video_frame();
893 _active_subtitles.clear_before (time);
898 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
901 _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
905 Player::fill_audio (DCPTimePeriod period)
907 if (period.from == period.to) {
911 DCPOMATIC_ASSERT (period.from < period.to);
913 BOOST_FOREACH (DCPTimePeriod i, subtract(period, _no_audio)) {
916 DCPTime block = min (DCPTime::from_seconds (0.5), i.to - t);
917 Frame const samples = block.frames_round(_film->audio_frame_rate());
919 shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
920 silence->make_silent ();
921 emit_audio (silence, t);
929 Player::one_video_frame () const
931 return DCPTime::from_frames (1, _film->video_frame_rate ());
934 pair<shared_ptr<AudioBuffers>, DCPTime>
935 Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to) const
937 DCPTime const discard_time = discard_to - time;
938 Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate());
939 Frame remaining_frames = audio->frames() - discard_frames;
940 if (remaining_frames <= 0) {
941 return make_pair(shared_ptr<AudioBuffers>(), DCPTime());
943 shared_ptr<AudioBuffers> cut (new AudioBuffers (audio->channels(), remaining_frames));
944 cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
945 return make_pair(cut, time + discard_time);