2 Copyright (C) 2013-2014 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.
24 #include "ffmpeg_decoder.h"
25 #include "audio_buffers.h"
26 #include "ffmpeg_content.h"
27 #include "image_decoder.h"
28 #include "image_content.h"
29 #include "sndfile_decoder.h"
30 #include "sndfile_content.h"
31 #include "subtitle_content.h"
32 #include "subrip_decoder.h"
33 #include "subrip_content.h"
40 #include "render_subtitles.h"
41 #include "dcp_video.h"
43 #include "content_video.h"
54 using boost::shared_ptr;
55 using boost::weak_ptr;
56 using boost::dynamic_pointer_cast;
57 using boost::optional;
59 Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
62 , _have_valid_pieces (false)
63 , _approximate_size (false)
64 , _burn_subtitles (false)
66 _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
67 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2, _3));
68 _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
69 set_video_container_size (_film->frame_size ());
73 Player::setup_pieces ()
75 list<shared_ptr<Piece> > old_pieces = _pieces;
78 ContentList content = _playlist->content ();
80 for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
82 if (!(*i)->paths_valid ()) {
86 shared_ptr<Decoder> decoder;
87 optional<FrameRateChange> frc;
89 /* Work out a FrameRateChange for the best overlap video for this content, in case we need it below */
90 DCPTime best_overlap_t;
91 shared_ptr<VideoContent> best_overlap;
92 for (ContentList::iterator j = content.begin(); j != content.end(); ++j) {
93 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*j);
98 DCPTime const overlap = max (vc->position(), (*i)->position()) - min (vc->end(), (*i)->end());
99 if (overlap > best_overlap_t) {
101 best_overlap_t = overlap;
105 optional<FrameRateChange> best_overlap_frc;
107 best_overlap_frc = FrameRateChange (best_overlap->video_frame_rate(), _film->video_frame_rate ());
109 /* No video overlap; e.g. if the DCP is just audio */
110 best_overlap_frc = FrameRateChange (_film->video_frame_rate(), _film->video_frame_rate ());
114 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
116 decoder.reset (new FFmpegDecoder (fc, _film->log()));
117 frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
121 shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
123 /* See if we can re-use an old ImageDecoder */
124 for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
125 shared_ptr<ImageDecoder> imd = dynamic_pointer_cast<ImageDecoder> ((*j)->decoder);
126 if (imd && imd->content() == ic) {
132 decoder.reset (new ImageDecoder (ic));
135 frc = FrameRateChange (ic->video_frame_rate(), _film->video_frame_rate());
139 shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
141 decoder.reset (new SndfileDecoder (sc));
142 frc = best_overlap_frc;
146 shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (*i);
148 decoder.reset (new SubRipDecoder (rc));
149 frc = best_overlap_frc;
152 _pieces.push_back (shared_ptr<Piece> (new Piece (*i, decoder, frc.get ())));
155 _have_valid_pieces = true;
159 Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
161 shared_ptr<Content> c = w.lock ();
167 property == ContentProperty::POSITION ||
168 property == ContentProperty::LENGTH ||
169 property == ContentProperty::TRIM_START ||
170 property == ContentProperty::TRIM_END ||
171 property == ContentProperty::PATH ||
172 property == VideoContentProperty::VIDEO_FRAME_TYPE
175 _have_valid_pieces = false;
179 property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
180 property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
181 property == SubtitleContentProperty::SUBTITLE_SCALE ||
182 property == VideoContentProperty::VIDEO_CROP ||
183 property == VideoContentProperty::VIDEO_SCALE ||
184 property == VideoContentProperty::VIDEO_FRAME_RATE
192 Player::playlist_changed ()
194 _have_valid_pieces = false;
199 Player::set_video_container_size (dcp::Size s)
201 _video_container_size = s;
203 _black_image.reset (new Image (PIX_FMT_RGB24, _video_container_size, true));
204 _black_image->make_black ();
208 Player::film_changed (Film::Property p)
210 /* Here we should notice Film properties that affect our output, and
211 alert listeners that our output now would be different to how it was
212 last time we were run.
215 if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
221 Player::process_content_image_subtitles (shared_ptr<SubtitleContent> content, list<shared_ptr<ContentImageSubtitle> > subs)
223 list<PositionImage> all;
225 for (list<shared_ptr<ContentImageSubtitle> >::const_iterator i = subs.begin(); i != subs.end(); ++i) {
230 dcpomatic::Rect<double> in_rect = (*i)->rectangle;
231 dcp::Size scaled_size;
233 in_rect.x += content->subtitle_x_offset ();
234 in_rect.y += content->subtitle_y_offset ();
236 /* We will scale the subtitle up to fit _video_container_size, and also by the additional subtitle_scale */
237 scaled_size.width = in_rect.width * _video_container_size.width * content->subtitle_scale ();
238 scaled_size.height = in_rect.height * _video_container_size.height * content->subtitle_scale ();
240 /* Then we need a corrective translation, consisting of two parts:
242 * 1. that which is the result of the scaling of the subtitle by _video_container_size; this will be
243 * rect.x * _video_container_size.width and rect.y * _video_container_size.height.
245 * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
246 * (width_before_subtitle_scale * (1 - subtitle_scale) / 2) and
247 * (height_before_subtitle_scale * (1 - subtitle_scale) / 2).
249 * Combining these two translations gives these expressions.
256 Scaler::from_id ("bicubic"),
257 (*i)->image->pixel_format (),
261 rint (_video_container_size.width * (in_rect.x + (in_rect.width * (1 - content->subtitle_scale ()) / 2))),
262 rint (_video_container_size.height * (in_rect.y + (in_rect.height * (1 - content->subtitle_scale ()) / 2)))
272 Player::process_content_text_subtitles (list<shared_ptr<ContentTextSubtitle> > sub)
274 list<PositionImage> all;
275 for (list<shared_ptr<ContentTextSubtitle> >::const_iterator i = sub.begin(); i != sub.end(); ++i) {
276 if (!(*i)->subs.empty ()) {
277 all.push_back (render_subtitles ((*i)->subs, _video_container_size));
285 Player::set_approximate_size ()
287 _approximate_size = true;
291 Player::black_dcp_video (DCPTime time) const
293 return shared_ptr<DCPVideo> (
298 _video_container_size,
299 _video_container_size,
300 Scaler::from_id ("bicubic"),
301 Config::instance()->colour_conversions().front().conversion,
308 Player::get_video (DCPTime time, bool accurate)
310 if (!_have_valid_pieces) {
314 list<shared_ptr<Piece> > ov = overlaps<VideoContent> (time);
316 /* No video content at this time */
317 return black_dcp_video (time);
320 /* Create a DCPVideo from the content's video at this time */
322 shared_ptr<Piece> piece = ov.back ();
323 shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
325 shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
328 optional<ContentVideo> dec = decoder->get_video (dcp_to_content_video (piece, time), accurate);
330 return black_dcp_video (time);
333 dcp::Size image_size = content->scale().size (content, _video_container_size, _film->frame_size ());
334 if (_approximate_size) {
335 image_size.width &= ~3;
336 image_size.height &= ~3;
339 shared_ptr<DCPVideo> dcp_video (
345 _video_container_size,
347 content->colour_conversion (),
354 ov = overlaps<SubtitleContent> (time);
355 list<PositionImage> sub_images;
357 for (list<shared_ptr<Piece> >::const_iterator i = ov.begin(); i != ov.end(); ++i) {
358 shared_ptr<SubtitleDecoder> subtitle_decoder = dynamic_pointer_cast<SubtitleDecoder> ((*i)->decoder);
359 shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*i)->content);
360 ContentTime const from = dcp_to_content_subtitle (*i, time);
361 ContentTime const to = from + ContentTime::from_frames (1, content->video_frame_rate ());
363 list<shared_ptr<ContentImageSubtitle> > image_subtitles = subtitle_decoder->get_image_subtitles (from, to);
364 if (!image_subtitles.empty ()) {
365 list<PositionImage> im = process_content_image_subtitles (
370 copy (im.begin(), im.end(), back_inserter (sub_images));
373 if (_burn_subtitles) {
374 list<shared_ptr<ContentTextSubtitle> > text_subtitles = subtitle_decoder->get_text_subtitles (from, to);
375 if (!text_subtitles.empty ()) {
376 list<PositionImage> im = process_content_text_subtitles (text_subtitles);
377 copy (im.begin(), im.end(), back_inserter (sub_images));
382 if (!sub_images.empty ()) {
383 dcp_video->set_subtitle (merge (sub_images));
389 shared_ptr<AudioBuffers>
390 Player::get_audio (DCPTime time, DCPTime length, bool accurate)
392 if (!_have_valid_pieces) {
396 AudioFrame const length_frames = length.frames (_film->audio_frame_rate ());
398 shared_ptr<AudioBuffers> audio (new AudioBuffers (_film->audio_channels(), length_frames));
399 audio->make_silent ();
401 list<shared_ptr<Piece> > ov = overlaps<AudioContent> (time);
406 for (list<shared_ptr<Piece> >::iterator i = ov.begin(); i != ov.end(); ++i) {
408 shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> ((*i)->content);
410 shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
413 AudioFrame const content_time = dcp_to_content_audio (*i, time);
415 /* Audio from this piece's decoder (which might be more than what we asked for) */
416 shared_ptr<ContentAudio> all = decoder->get_audio (content_time, length_frames, accurate);
419 if (content->audio_gain() != 0) {
420 shared_ptr<AudioBuffers> gain (new AudioBuffers (all->audio));
421 gain->apply_gain (content->audio_gain ());
426 shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), all->audio->frames()));
427 dcp_mapped->make_silent ();
428 AudioMapping map = content->audio_mapping ();
429 for (int i = 0; i < map.content_channels(); ++i) {
430 for (int j = 0; j < _film->audio_channels(); ++j) {
431 if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
432 dcp_mapped->accumulate_channel (
436 map.get (i, static_cast<dcp::Channel> (j))
442 all->audio = dcp_mapped;
446 audio->dcp_time += content->audio_delay() * TIME_HZ / 1000;
447 if (audio->dcp_time < 0) {
448 int const frames = - audio->dcp_time * _film->audio_frame_rate() / TIME_HZ;
449 if (frames >= audio->audio->frames ()) {
453 shared_ptr<AudioBuffers> trimmed (new AudioBuffers (audio->audio->channels(), audio->audio->frames() - frames));
454 trimmed->copy_from (audio->audio.get(), audio->audio->frames() - frames, frames, 0);
456 audio->audio = trimmed;
461 audio->accumulate_frames (all->audio.get(), all->frame - content_time, 0, min (AudioFrame (all->audio->frames()), length_frames));
468 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
470 /* s is the offset of t from the start position of this content */
471 DCPTime s = t - piece->content->position ();
472 s = DCPTime (max (int64_t (0), s.get ()));
473 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
475 /* Convert this to the content frame */
476 return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) * piece->frc.factor ();
480 Player::dcp_to_content_audio (shared_ptr<const Piece> piece, DCPTime t) const
482 /* s is the offset of t from the start position of this content */
483 DCPTime s = t - piece->content->position ();
484 s = DCPTime (max (int64_t (0), s.get ()));
485 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
487 /* Convert this to the content frame */
488 return DCPTime (s + piece->content->trim_start()).frames (_film->audio_frame_rate());
492 Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
494 /* s is the offset of t from the start position of this content */
495 DCPTime s = t - piece->content->position ();
496 s = DCPTime (max (int64_t (0), s.get ()));
497 s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
499 return ContentTime (s, piece->frc);
503 PlayerStatistics::dump (shared_ptr<Log> log) const
505 log->log (String::compose ("Video: %1 good %2 skipped %3 black %4 repeat", video.good, video.skip, video.black, video.repeat));
506 log->log (String::compose ("Audio: %1 good %2 skipped %3 silence", audio.good, audio.skip, audio.silence.seconds()));
509 PlayerStatistics const &
510 Player::statistics () const