2 Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "ffmpeg_decoder.h"
23 #include "audio_buffers.h"
24 #include "ffmpeg_content.h"
25 #include "image_decoder.h"
26 #include "image_content.h"
27 #include "sndfile_decoder.h"
28 #include "sndfile_content.h"
29 #include "subtitle_content.h"
30 #include "subrip_decoder.h"
31 #include "subrip_content.h"
32 #include "dcp_content.h"
35 #include "raw_image_proxy.h"
38 #include "render_subtitles.h"
40 #include "content_video.h"
41 #include "player_video.h"
42 #include "frame_rate_change.h"
43 #include "dcp_content.h"
44 #include "dcp_decoder.h"
45 #include "dcp_subtitle_content.h"
46 #include "dcp_subtitle_decoder.h"
47 #include "audio_processor.h"
49 #include <boost/foreach.hpp>
55 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
67 using boost::shared_ptr;
68 using boost::weak_ptr;
69 using boost::dynamic_pointer_cast;
70 using boost::optional;
72 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
74 , _playlist (playlist)
75 , _have_valid_pieces (false)
76 , _ignore_video (false)
77 , _always_burn_subtitles (false)
79 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
80 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
81 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
82 set_video_container_size (_film->frame_size ());
84 film_changed (Film::AUDIO_PROCESSOR);
88 Player::setup_pieces ()
90 list<shared_ptr<Piece> > old_pieces = _pieces;
93 BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
95 if (!i->paths_valid ()) {
99 shared_ptr<Decoder> decoder;
100 optional<FrameRateChange> frc;
102 /* Work out a FrameRateChange for the best overlap video for this content, in case we need it below */
103 DCPTime best_overlap_t;
104 shared_ptr<VideoContent> best_overlap;
105 BOOST_FOREACH (shared_ptr<Content> j, _playlist->content ()) {
106 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (j);
111 DCPTime const overlap = max (vc->position(), i->position()) - min (vc->end(), i->end());
112 if (overlap > best_overlap_t) {
114 best_overlap_t = overlap;
118 optional<FrameRateChange> best_overlap_frc;
120 best_overlap_frc = FrameRateChange (best_overlap->video_frame_rate(), _film->video_frame_rate ());
122 /* No video overlap; e.g. if the DCP is just audio */
123 best_overlap_frc = FrameRateChange (_film->video_frame_rate(), _film->video_frame_rate ());
127 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (i);
129 decoder.reset (new FFmpegDecoder (fc, _film->log()));
130 frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
133 shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (i);
135 decoder.reset (new DCPDecoder (dc));
136 frc = FrameRateChange (dc->video_frame_rate(), _film->video_frame_rate());
140 shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (i);
142 /* See if we can re-use an old ImageDecoder */
143 for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
144 shared_ptr<ImageDecoder> imd = dynamic_pointer_cast<ImageDecoder> ((*j)->decoder);
145 if (imd && imd->content() == ic) {
151 decoder.reset (new ImageDecoder (ic));
154 frc = FrameRateChange (ic->video_frame_rate(), _film->video_frame_rate());
158 shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (i);
160 decoder.reset (new SndfileDecoder (sc));
161 frc = best_overlap_frc;
165 shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (i);
167 decoder.reset (new SubRipDecoder (rc));
168 frc = best_overlap_frc;
171 /* DCPSubtitleContent */
172 shared_ptr<const DCPSubtitleContent> dsc = dynamic_pointer_cast<const DCPSubtitleContent> (i);
174 decoder.reset (new DCPSubtitleDecoder (dsc));
175 frc = best_overlap_frc;
178 shared_ptr<VideoDecoder> vd = dynamic_pointer_cast<VideoDecoder> (decoder);
179 if (vd && _ignore_video) {
180 vd->set_ignore_video ();
183 _pieces.push_back (shared_ptr<Piece> (new Piece (i, decoder, frc.get ())));
186 _have_valid_pieces = true;
190 Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
192 shared_ptr<Content> c = w.lock ();
198 property == ContentProperty::POSITION ||
199 property == ContentProperty::LENGTH ||
200 property == ContentProperty::TRIM_START ||
201 property == ContentProperty::TRIM_END ||
202 property == ContentProperty::PATH ||
203 property == VideoContentProperty::VIDEO_FRAME_TYPE ||
204 property == DCPContentProperty::CAN_BE_PLAYED
207 _have_valid_pieces = false;
211 property == SubtitleContentProperty::USE_SUBTITLES ||
212 property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
213 property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
214 property == SubtitleContentProperty::SUBTITLE_X_SCALE ||
215 property == SubtitleContentProperty::SUBTITLE_Y_SCALE ||
216 property == VideoContentProperty::VIDEO_CROP ||
217 property == VideoContentProperty::VIDEO_SCALE ||
218 property == VideoContentProperty::VIDEO_FRAME_RATE ||
219 property == VideoContentProperty::VIDEO_FADE_IN ||
220 property == VideoContentProperty::VIDEO_FADE_OUT
228 Player::set_video_container_size (dcp::Size s)
230 _video_container_size = s;
232 _black_image.reset (new Image (PIX_FMT_RGB24, _video_container_size, true));
233 _black_image->make_black ();
237 Player::playlist_changed ()
239 _have_valid_pieces = false;
244 Player::film_changed (Film::Property p)
246 /* Here we should notice Film properties that affect our output, and
247 alert listeners that our output now would be different to how it was
248 last time we were run.
251 if (p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
253 } else if (p == Film::AUDIO_PROCESSOR) {
254 if (_film->audio_processor ()) {
255 _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
261 Player::transform_image_subtitles (list<ImageSubtitle> subs) const
263 list<PositionImage> all;
265 for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
270 /* We will scale the subtitle up to fit _video_container_size */
271 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
273 /* Then we need a corrective translation, consisting of two parts:
275 * 1. that which is the result of the scaling of the subtitle by _video_container_size; this will be
276 * rect.x * _video_container_size.width and rect.y * _video_container_size.height.
278 * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
279 * (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
280 * (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
282 * Combining these two translations gives these expressions.
289 dcp::YUV_TO_RGB_REC601,
290 i->image->pixel_format (),
294 rint (_video_container_size.width * i->rectangle.x),
295 rint (_video_container_size.height * i->rectangle.y)
304 shared_ptr<PlayerVideo>
305 Player::black_player_video_frame (DCPTime time) const
307 return shared_ptr<PlayerVideo> (
309 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
313 _video_container_size,
314 _video_container_size,
317 PresetColourConversion::all().front().conversion
322 /** @return All PlayerVideos at the given time (there may be two frames for 3D) */
323 list<shared_ptr<PlayerVideo> >
324 Player::get_video (DCPTime time, bool accurate)
326 if (!_have_valid_pieces) {
330 /* Find subtitles for possible burn-in */
332 PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false, true);
334 list<PositionImage> sub_images;
336 /* Image subtitles */
337 list<PositionImage> c = transform_image_subtitles (ps.image);
338 copy (c.begin(), c.end(), back_inserter (sub_images));
340 /* Text subtitles (rendered to an image) */
341 if (!ps.text.empty ()) {
342 list<PositionImage> s = render_subtitles (ps.text, _video_container_size);
343 copy (s.begin (), s.end (), back_inserter (sub_images));
346 optional<PositionImage> subtitles;
347 if (!sub_images.empty ()) {
348 subtitles = merge (sub_images);
353 list<shared_ptr<Piece> > ov = overlaps<VideoContent> (
355 time + DCPTime::from_frames (1, _film->video_frame_rate ()) - DCPTime::delta()
358 list<shared_ptr<PlayerVideo> > pvf;
361 /* No video content at this time */
362 pvf.push_back (black_player_video_frame (time));
364 /* Create a PlayerVideo from the content's video at this time */
366 shared_ptr<Piece> piece = ov.back ();
367 shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
368 DCPOMATIC_ASSERT (decoder);
369 shared_ptr<VideoContent> video_content = dynamic_pointer_cast<VideoContent> (piece->content);
370 DCPOMATIC_ASSERT (video_content);
372 list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
373 if (content_video.empty ()) {
374 pvf.push_back (black_player_video_frame (time));
378 dcp::Size image_size = video_content->scale().size (video_content, _video_container_size, _film->frame_size ());
380 for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
382 shared_ptr<PlayerVideo> (
385 content_video_to_dcp (piece, i->frame),
386 video_content->crop (),
387 video_content->fade (i->frame),
389 _video_container_size,
392 video_content->colour_conversion ()
400 BOOST_FOREACH (shared_ptr<PlayerVideo> p, pvf) {
401 p->set_subtitle (subtitles.get ());
408 shared_ptr<AudioBuffers>
409 Player::get_audio (DCPTime time, DCPTime length, bool accurate)
411 if (!_have_valid_pieces) {
415 Frame const length_frames = length.frames (_film->audio_frame_rate ());
417 shared_ptr<AudioBuffers> audio (new AudioBuffers (_film->audio_channels(), length_frames));
418 audio->make_silent ();
420 list<shared_ptr<Piece> > ov = overlaps<AudioContent> (time, time + length);
425 for (list<shared_ptr<Piece> >::iterator i = ov.begin(); i != ov.end(); ++i) {
427 shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> ((*i)->content);
428 DCPOMATIC_ASSERT (content);
429 shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
430 DCPOMATIC_ASSERT (decoder);
432 /* The time that we should request from the content */
433 DCPTime request = time - DCPTime::from_seconds (content->audio_delay() / 1000.0);
434 Frame request_frames = length_frames;
436 if (request < DCPTime ()) {
437 /* We went off the start of the content, so we will need to offset
438 the stuff we get back.
441 request_frames += request.frames (_film->audio_frame_rate ());
442 if (request_frames < 0) {
445 request = DCPTime ();
448 Frame const content_frame = dcp_to_content_audio (*i, request);
450 BOOST_FOREACH (AudioStreamPtr j, content->audio_streams ()) {
452 if (j->channels() == 0) {
453 /* Some content (e.g. DCPs) can have streams with no channels */
457 /* Audio from this piece's decoder stream (which might be more or less than what we asked for) */
458 ContentAudio all = decoder->get_audio (j, content_frame, request_frames, accurate);
461 if (content->audio_gain() != 0) {
462 shared_ptr<AudioBuffers> gain (new AudioBuffers (all.audio));
463 gain->apply_gain (content->audio_gain ());
468 shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), all.audio->frames()));
469 dcp_mapped->make_silent ();
470 AudioMapping map = j->mapping ();
471 for (int i = 0; i < map.input_channels(); ++i) {
472 for (int j = 0; j < _film->audio_channels(); ++j) {
473 if (map.get (i, j) > 0) {
474 dcp_mapped->accumulate_channel (
484 if (_audio_processor) {
485 dcp_mapped = _audio_processor->run (dcp_mapped);
488 all.audio = dcp_mapped;
490 audio->accumulate_frames (
492 content_frame - all.frame,
493 offset.frames (_film->audio_frame_rate()),
494 min (Frame (all.audio->frames()), request_frames)
503 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
505 /* s is the offset of t from the start position of this content */
506 DCPTime s = t - piece->content->position ();
507 s = DCPTime (max (DCPTime::Type (0), s.get ()));
508 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
510 /* Convert this to the content frame */
511 return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) / piece->frc.factor ();
515 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
517 DCPTime t = DCPTime::from_frames (f * piece->frc.factor (), _film->video_frame_rate()) - piece->content->trim_start () + piece->content->position ();
518 if (t < DCPTime ()) {
526 Player::dcp_to_content_audio (shared_ptr<const Piece> piece, DCPTime t) const
528 /* s is the offset of t from the start position of this content */
529 DCPTime s = t - piece->content->position ();
530 s = DCPTime (max (DCPTime::Type (0), s.get ()));
531 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
533 /* Convert this to the content frame */
534 return DCPTime (s + piece->content->trim_start()).frames (_film->audio_frame_rate());
538 Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
540 /* s is the offset of t from the start position of this content */
541 DCPTime s = t - piece->content->position ();
542 s = DCPTime (max (DCPTime::Type (0), s.get ()));
543 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
545 return ContentTime (s + piece->content->trim_start(), piece->frc);
549 PlayerStatistics::dump (shared_ptr<Log> log) const
551 log->log (String::compose ("Video: %1 good %2 skipped %3 black %4 repeat", video.good, video.skip, video.black, video.repeat), Log::TYPE_GENERAL);
552 log->log (String::compose ("Audio: %1 good %2 skipped %3 silence", audio.good, audio.skip, audio.silence.seconds()), Log::TYPE_GENERAL);
555 PlayerStatistics const &
556 Player::statistics () const
561 /** @param burnt true to return only subtitles to be burnt, false to return only
562 * subtitles that should not be burnt. This parameter will be ignored if
563 * _always_burn_subtitles is true; in this case, all subtitles will be returned.
566 Player::get_subtitles (DCPTime time, DCPTime length, bool starting, bool burnt)
568 list<shared_ptr<Piece> > subs = overlaps<SubtitleContent> (time, time + length);
570 PlayerSubtitles ps (time, length);
572 for (list<shared_ptr<Piece> >::const_iterator j = subs.begin(); j != subs.end(); ++j) {
573 shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*j)->content);
574 if (!subtitle_content->use_subtitles () || (!_always_burn_subtitles && (burnt != subtitle_content->burn_subtitles ()))) {
578 shared_ptr<SubtitleDecoder> subtitle_decoder = dynamic_pointer_cast<SubtitleDecoder> ((*j)->decoder);
579 ContentTime const from = dcp_to_content_subtitle (*j, time);
580 /* XXX: this video_frame_rate() should be the rate that the subtitle content has been prepared for */
581 ContentTime const to = from + ContentTime::from_frames (1, _film->video_frame_rate ());
583 list<ContentImageSubtitle> image = subtitle_decoder->get_image_subtitles (ContentTimePeriod (from, to), starting);
584 for (list<ContentImageSubtitle>::iterator i = image.begin(); i != image.end(); ++i) {
586 /* Apply content's subtitle offsets */
587 i->sub.rectangle.x += subtitle_content->subtitle_x_offset ();
588 i->sub.rectangle.y += subtitle_content->subtitle_y_offset ();
590 /* Apply content's subtitle scale */
591 i->sub.rectangle.width *= subtitle_content->subtitle_x_scale ();
592 i->sub.rectangle.height *= subtitle_content->subtitle_y_scale ();
594 /* Apply a corrective translation to keep the subtitle centred after that scale */
595 i->sub.rectangle.x -= i->sub.rectangle.width * (subtitle_content->subtitle_x_scale() - 1);
596 i->sub.rectangle.y -= i->sub.rectangle.height * (subtitle_content->subtitle_y_scale() - 1);
598 ps.image.push_back (i->sub);
601 list<ContentTextSubtitle> text = subtitle_decoder->get_text_subtitles (ContentTimePeriod (from, to), starting);
602 BOOST_FOREACH (ContentTextSubtitle& ts, text) {
603 BOOST_FOREACH (dcp::SubtitleString& s, ts.subs) {
604 s.set_h_position (s.h_position() + subtitle_content->subtitle_x_offset ());
605 s.set_v_position (s.v_position() + subtitle_content->subtitle_y_offset ());
606 float const xs = subtitle_content->subtitle_x_scale();
607 float const ys = subtitle_content->subtitle_y_scale();
608 float const average = s.size() * (xs + ys) / 2;
609 s.set_size (average);
610 if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
611 s.set_aspect_adjust (xs / ys);
613 ps.text.push_back (s);
621 list<shared_ptr<Font> >
622 Player::get_subtitle_fonts ()
624 if (!_have_valid_pieces) {
628 list<shared_ptr<Font> > fonts;
629 BOOST_FOREACH (shared_ptr<Piece>& p, _pieces) {
630 shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (p->content);
632 /* XXX: things may go wrong if there are duplicate font IDs
633 with different font files.
635 list<shared_ptr<Font> > f = sc->fonts ();
636 copy (f.begin(), f.end(), back_inserter (fonts));
643 /** Set this player never to produce any video data */
645 Player::set_ignore_video ()
647 _ignore_video = true;
650 /** Set whether or not this player should always burn text subtitles into the image,
651 * regardless of the content settings.
652 * @param burn true to always burn subtitles, false to obey content settings.
655 Player::set_always_burn_subtitles (bool burn)
657 _always_burn_subtitles = burn;