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"
36 #include "raw_image_proxy.h"
39 #include "render_subtitles.h"
41 #include "content_video.h"
42 #include "player_video.h"
43 #include "frame_rate_change.h"
44 #include "dcp_content.h"
45 #include "dcp_decoder.h"
46 #include "dcp_subtitle_content.h"
47 #include "dcp_subtitle_decoder.h"
48 #include <boost/foreach.hpp>
54 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
65 using boost::shared_ptr;
66 using boost::weak_ptr;
67 using boost::dynamic_pointer_cast;
68 using boost::optional;
70 Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
73 , _have_valid_pieces (false)
74 , _ignore_video (false)
76 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
77 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2, _3));
78 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
79 set_video_container_size (_film->frame_size ());
83 Player::setup_pieces ()
85 list<shared_ptr<Piece> > old_pieces = _pieces;
88 ContentList content = _playlist->content ();
90 for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
92 if (!(*i)->paths_valid ()) {
96 shared_ptr<Decoder> decoder;
97 optional<FrameRateChange> frc;
99 /* Work out a FrameRateChange for the best overlap video for this content, in case we need it below */
100 DCPTime best_overlap_t;
101 shared_ptr<VideoContent> best_overlap;
102 for (ContentList::iterator j = content.begin(); j != content.end(); ++j) {
103 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*j);
108 DCPTime const overlap = max (vc->position(), (*i)->position()) - min (vc->end(), (*i)->end());
109 if (overlap > best_overlap_t) {
111 best_overlap_t = overlap;
115 optional<FrameRateChange> best_overlap_frc;
117 best_overlap_frc = FrameRateChange (best_overlap->video_frame_rate(), _film->video_frame_rate ());
119 /* No video overlap; e.g. if the DCP is just audio */
120 best_overlap_frc = FrameRateChange (_film->video_frame_rate(), _film->video_frame_rate ());
124 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
126 decoder.reset (new FFmpegDecoder (fc, _film->log()));
127 frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
130 shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (*i);
132 decoder.reset (new DCPDecoder (dc));
133 frc = FrameRateChange (dc->video_frame_rate(), _film->video_frame_rate());
137 shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
139 /* See if we can re-use an old ImageDecoder */
140 for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
141 shared_ptr<ImageDecoder> imd = dynamic_pointer_cast<ImageDecoder> ((*j)->decoder);
142 if (imd && imd->content() == ic) {
148 decoder.reset (new ImageDecoder (ic));
151 frc = FrameRateChange (ic->video_frame_rate(), _film->video_frame_rate());
155 shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
157 decoder.reset (new SndfileDecoder (sc));
158 frc = best_overlap_frc;
162 shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (*i);
164 decoder.reset (new SubRipDecoder (rc));
165 frc = best_overlap_frc;
168 /* DCPSubtitleContent */
169 shared_ptr<const DCPSubtitleContent> dsc = dynamic_pointer_cast<const DCPSubtitleContent> (*i);
171 decoder.reset (new DCPSubtitleDecoder (dsc));
172 frc = best_overlap_frc;
175 shared_ptr<VideoDecoder> vd = dynamic_pointer_cast<VideoDecoder> (decoder);
176 if (vd && _ignore_video) {
177 vd->set_ignore_video ();
180 _pieces.push_back (shared_ptr<Piece> (new Piece (*i, decoder, frc.get ())));
183 _have_valid_pieces = true;
187 Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
189 shared_ptr<Content> c = w.lock ();
195 property == ContentProperty::POSITION ||
196 property == ContentProperty::LENGTH ||
197 property == ContentProperty::TRIM_START ||
198 property == ContentProperty::TRIM_END ||
199 property == ContentProperty::PATH ||
200 property == VideoContentProperty::VIDEO_FRAME_TYPE ||
201 property == DCPContentProperty::CAN_BE_PLAYED
204 _have_valid_pieces = false;
208 property == SubtitleContentProperty::USE_SUBTITLES ||
209 property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
210 property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
211 property == SubtitleContentProperty::SUBTITLE_X_SCALE ||
212 property == SubtitleContentProperty::SUBTITLE_Y_SCALE ||
213 property == VideoContentProperty::VIDEO_CROP ||
214 property == VideoContentProperty::VIDEO_SCALE ||
215 property == VideoContentProperty::VIDEO_FRAME_RATE ||
216 property == VideoContentProperty::VIDEO_FADE_IN ||
217 property == VideoContentProperty::VIDEO_FADE_OUT
225 Player::playlist_changed ()
227 _have_valid_pieces = false;
232 Player::set_video_container_size (dcp::Size s)
234 _video_container_size = s;
236 _black_image.reset (new Image (PIX_FMT_RGB24, _video_container_size, true));
237 _black_image->make_black ();
241 Player::film_changed (Film::Property p)
243 /* Here we should notice Film properties that affect our output, and
244 alert listeners that our output now would be different to how it was
245 last time we were run.
248 if (p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
254 Player::transform_image_subtitles (list<ImageSubtitle> subs) const
256 list<PositionImage> all;
258 for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
263 /* We will scale the subtitle up to fit _video_container_size */
264 dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
266 /* Then we need a corrective translation, consisting of two parts:
268 * 1. that which is the result of the scaling of the subtitle by _video_container_size; this will be
269 * rect.x * _video_container_size.width and rect.y * _video_container_size.height.
271 * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
272 * (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
273 * (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
275 * Combining these two translations gives these expressions.
282 dcp::YUV_TO_RGB_REC601,
283 i->image->pixel_format (),
287 rint (_video_container_size.width * i->rectangle.x),
288 rint (_video_container_size.height * i->rectangle.y)
297 shared_ptr<PlayerVideo>
298 Player::black_player_video_frame (DCPTime time) const
300 return shared_ptr<PlayerVideo> (
302 shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
306 _video_container_size,
307 _video_container_size,
310 PresetColourConversion::all().front().conversion
315 /** @return All PlayerVideos at the given time (there may be two frames for 3D) */
316 list<shared_ptr<PlayerVideo> >
317 Player::get_video (DCPTime time, bool accurate)
319 if (!_have_valid_pieces) {
323 list<shared_ptr<Piece> > ov = overlaps<VideoContent> (
325 time + DCPTime::from_frames (1, _film->video_frame_rate ())
328 list<shared_ptr<PlayerVideo> > pvf;
331 /* No video content at this time */
332 pvf.push_back (black_player_video_frame (time));
334 /* Create a PlayerVideo from the content's video at this time */
336 shared_ptr<Piece> piece = ov.back ();
337 shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
338 DCPOMATIC_ASSERT (decoder);
339 shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
340 DCPOMATIC_ASSERT (content);
342 list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
343 if (content_video.empty ()) {
344 pvf.push_back (black_player_video_frame (time));
348 dcp::Size image_size = content->scale().size (content, _video_container_size, _film->frame_size ());
350 for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
352 shared_ptr<PlayerVideo> (
355 content_video_to_dcp (piece, i->frame),
357 content->fade (i->frame),
359 _video_container_size,
362 content->colour_conversion ()
369 /* Add subtitles (for possible burn-in) to whatever PlayerVideos we got */
371 PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false);
373 list<PositionImage> sub_images;
375 /* Image subtitles */
376 list<PositionImage> c = transform_image_subtitles (ps.image);
377 copy (c.begin(), c.end(), back_inserter (sub_images));
379 /* Text subtitles (rendered to an image) */
380 if (!ps.text.empty ()) {
381 sub_images.push_back (render_subtitles (ps.text, _video_container_size));
384 if (!sub_images.empty ()) {
385 for (list<shared_ptr<PlayerVideo> >::const_iterator i = pvf.begin(); i != pvf.end(); ++i) {
386 (*i)->set_subtitle (merge (sub_images));
393 shared_ptr<AudioBuffers>
394 Player::get_audio (DCPTime time, DCPTime length, bool accurate)
396 if (!_have_valid_pieces) {
400 Frame const length_frames = length.frames (_film->audio_frame_rate ());
402 shared_ptr<AudioBuffers> audio (new AudioBuffers (_film->audio_channels(), length_frames));
403 audio->make_silent ();
405 list<shared_ptr<Piece> > ov = overlaps<AudioContent> (time, time + length);
410 for (list<shared_ptr<Piece> >::iterator i = ov.begin(); i != ov.end(); ++i) {
412 shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> ((*i)->content);
413 DCPOMATIC_ASSERT (content);
414 shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
415 DCPOMATIC_ASSERT (decoder);
417 /* The time that we should request from the content */
418 DCPTime request = time - DCPTime::from_seconds (content->audio_delay() / 1000.0);
419 Frame request_frames = length_frames;
421 if (request < DCPTime ()) {
422 /* We went off the start of the content, so we will need to offset
423 the stuff we get back.
426 request_frames += request.frames (_film->audio_frame_rate ());
427 if (request_frames < 0) {
430 request = DCPTime ();
433 Frame const content_frame = dcp_to_content_audio (*i, request);
435 BOOST_FOREACH (AudioStreamPtr j, content->audio_streams ()) {
437 /* Audio from this piece's decoder stream (which might be more or less than what we asked for) */
438 ContentAudio all = decoder->get_audio (j, content_frame, request_frames, accurate);
441 if (content->audio_gain() != 0) {
442 shared_ptr<AudioBuffers> gain (new AudioBuffers (all.audio));
443 gain->apply_gain (content->audio_gain ());
448 shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), all.audio->frames()));
449 dcp_mapped->make_silent ();
450 AudioMapping map = j->mapping ();
451 for (int i = 0; i < map.content_channels(); ++i) {
452 for (int j = 0; j < _film->audio_channels(); ++j) {
453 if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
454 dcp_mapped->accumulate_channel (
458 map.get (i, static_cast<dcp::Channel> (j))
464 all.audio = dcp_mapped;
466 audio->accumulate_frames (
468 content_frame - all.frame,
469 offset.frames (_film->audio_frame_rate()),
470 min (Frame (all.audio->frames()), request_frames)
479 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
481 /* s is the offset of t from the start position of this content */
482 DCPTime s = t - piece->content->position ();
483 s = DCPTime (max (DCPTime::Type (0), s.get ()));
484 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
486 /* Convert this to the content frame */
487 return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) / piece->frc.factor ();
491 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
493 DCPTime t = DCPTime::from_frames (f * piece->frc.factor (), _film->video_frame_rate()) - piece->content->trim_start () + piece->content->position ();
494 if (t < DCPTime ()) {
502 Player::dcp_to_content_audio (shared_ptr<const Piece> piece, DCPTime t) const
504 /* s is the offset of t from the start position of this content */
505 DCPTime s = t - piece->content->position ();
506 s = DCPTime (max (DCPTime::Type (0), s.get ()));
507 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
509 /* Convert this to the content frame */
510 return DCPTime (s + piece->content->trim_start()).frames (_film->audio_frame_rate());
514 Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
516 /* s is the offset of t from the start position of this content */
517 DCPTime s = t - piece->content->position ();
518 s = DCPTime (max (DCPTime::Type (0), s.get ()));
519 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
521 return ContentTime (s + piece->content->trim_start(), piece->frc);
525 PlayerStatistics::dump (shared_ptr<Log> log) const
527 log->log (String::compose ("Video: %1 good %2 skipped %3 black %4 repeat", video.good, video.skip, video.black, video.repeat), Log::TYPE_GENERAL);
528 log->log (String::compose ("Audio: %1 good %2 skipped %3 silence", audio.good, audio.skip, audio.silence.seconds()), Log::TYPE_GENERAL);
531 PlayerStatistics const &
532 Player::statistics () const
538 Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
540 list<shared_ptr<Piece> > subs = overlaps<SubtitleContent> (time, time + length);
542 PlayerSubtitles ps (time, length);
544 for (list<shared_ptr<Piece> >::const_iterator j = subs.begin(); j != subs.end(); ++j) {
545 shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*j)->content);
546 if (!subtitle_content->use_subtitles ()) {
550 shared_ptr<SubtitleDecoder> subtitle_decoder = dynamic_pointer_cast<SubtitleDecoder> ((*j)->decoder);
551 ContentTime const from = dcp_to_content_subtitle (*j, time);
552 /* XXX: this video_frame_rate() should be the rate that the subtitle content has been prepared for */
553 ContentTime const to = from + ContentTime::from_frames (1, _film->video_frame_rate ());
555 list<ContentImageSubtitle> image = subtitle_decoder->get_image_subtitles (ContentTimePeriod (from, to), starting);
556 for (list<ContentImageSubtitle>::iterator i = image.begin(); i != image.end(); ++i) {
558 /* Apply content's subtitle offsets */
559 i->sub.rectangle.x += subtitle_content->subtitle_x_offset ();
560 i->sub.rectangle.y += subtitle_content->subtitle_y_offset ();
562 /* Apply content's subtitle scale */
563 i->sub.rectangle.width *= subtitle_content->subtitle_x_scale ();
564 i->sub.rectangle.height *= subtitle_content->subtitle_y_scale ();
566 /* Apply a corrective translation to keep the subtitle centred after that scale */
567 i->sub.rectangle.x -= i->sub.rectangle.width * (subtitle_content->subtitle_x_scale() - 1);
568 i->sub.rectangle.y -= i->sub.rectangle.height * (subtitle_content->subtitle_y_scale() - 1);
570 ps.image.push_back (i->sub);
573 list<ContentTextSubtitle> text = subtitle_decoder->get_text_subtitles (ContentTimePeriod (from, to), starting);
574 BOOST_FOREACH (ContentTextSubtitle& ts, text) {
575 BOOST_FOREACH (dcp::SubtitleString& s, ts.subs) {
576 s.set_v_position (s.v_position() + subtitle_content->subtitle_y_offset ());
577 s.set_size (s.size() * max (subtitle_content->subtitle_x_scale(), subtitle_content->subtitle_y_scale()));
578 ps.text.push_back (s);
586 list<shared_ptr<Font> >
587 Player::get_subtitle_fonts ()
589 if (!_have_valid_pieces) {
593 list<shared_ptr<Font> > fonts;
594 BOOST_FOREACH (shared_ptr<Piece>& p, _pieces) {
595 shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (p->content);
597 /* XXX: things may go wrong if there are duplicate font IDs
598 with different font files.
600 list<shared_ptr<Font> > f = sc->fonts ();
601 copy (f.begin(), f.end(), back_inserter (fonts));
608 /** Set this player never to produce any video data */
610 Player::set_ignore_video ()
612 _ignore_video = true;