2 Copyright (C) 2012-2020 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/>.
22 #include "audio_buffers.h"
23 #include "compose.hpp"
26 #include "dcpomatic_log.h"
29 #include "font_data.h"
31 #include "image_png.h"
34 #include "reel_writer.h"
35 #include <dcp/atmos_asset.h>
36 #include <dcp/atmos_asset_writer.h>
37 #include <dcp/certificate_chain.h>
40 #include <dcp/interop_subtitle_asset.h>
41 #include <dcp/mono_picture_asset.h>
42 #include <dcp/raw_convert.h>
44 #include <dcp/reel_atmos_asset.h>
45 #include <dcp/reel_interop_closed_caption_asset.h>
46 #include <dcp/reel_interop_subtitle_asset.h>
47 #include <dcp/reel_markers_asset.h>
48 #include <dcp/reel_mono_picture_asset.h>
49 #include <dcp/reel_smpte_closed_caption_asset.h>
50 #include <dcp/reel_smpte_subtitle_asset.h>
51 #include <dcp/reel_sound_asset.h>
52 #include <dcp/reel_stereo_picture_asset.h>
53 #include <dcp/smpte_subtitle_asset.h>
54 #include <dcp/sound_asset.h>
55 #include <dcp/sound_asset_writer.h>
56 #include <dcp/stereo_picture_asset.h>
57 #include <dcp/subtitle_image.h>
62 using std::dynamic_pointer_cast;
65 using std::make_shared;
68 using std::shared_ptr;
72 using boost::optional;
73 #if BOOST_VERSION >= 106100
74 using namespace boost::placeholders;
78 using dcp::raw_convert;
79 using namespace dcpomatic;
82 int const ReelWriter::_info_size = 48;
85 static dcp::MXFMetadata
88 dcp::MXFMetadata meta;
89 auto config = Config::instance();
90 if (!config->dcp_company_name().empty()) {
91 meta.company_name = config->dcp_company_name ();
93 if (!config->dcp_product_name().empty()) {
94 meta.product_name = config->dcp_product_name ();
96 if (!config->dcp_product_version().empty()) {
97 meta.product_version = config->dcp_product_version ();
103 /** @param job Related job, or 0.
104 * @param text_only true to enable a special mode where the writer will expect only subtitles and closed captions to be written
105 * (no picture nor sound) and not give errors in that case. This is used by the hints system to check the potential sizes of
106 * subtitle / closed caption files.
108 ReelWriter::ReelWriter (
109 weak_ptr<const Film> weak_film, DCPTimePeriod period, shared_ptr<Job> job, int reel_index, int reel_count, bool text_only
111 : WeakConstFilm (weak_film)
113 , _reel_index (reel_index)
114 , _reel_count (reel_count)
115 , _content_summary (film()->content_summary(period))
117 , _text_only (text_only)
119 /* Create or find our picture asset in a subdirectory, named
120 according to those film's parameters which affect the video
121 output. We will hard-link it into the DCP later.
124 auto const standard = film()->interop() ? dcp::Standard::INTEROP : dcp::Standard::SMPTE;
126 boost::filesystem::path const asset =
127 film()->internal_video_asset_dir() / film()->internal_video_asset_filename(_period);
129 _first_nonexistant_frame = check_existing_picture_asset (asset);
131 if (_first_nonexistant_frame < period.duration().frames_round(film()->video_frame_rate())) {
132 /* We do not have a complete picture asset. If there is an
133 existing asset, break any hard links to it as we are about
134 to change its contents (if only by changing the IDs); see
137 if (boost::filesystem::exists(asset) && boost::filesystem::hard_link_count(asset) > 1) {
139 job->sub (_("Copying old video file"));
140 copy_in_bits (asset, asset.string() + ".tmp", bind(&Job::set_progress, job.get(), _1, false));
142 boost::filesystem::copy_file (asset, asset.string() + ".tmp");
144 boost::filesystem::remove (asset);
145 boost::filesystem::rename (asset.string() + ".tmp", asset);
149 if (film()->three_d()) {
150 _picture_asset.reset (new dcp::StereoPictureAsset(dcp::Fraction(film()->video_frame_rate(), 1), standard));
152 _picture_asset.reset (new dcp::MonoPictureAsset(dcp::Fraction(film()->video_frame_rate(), 1), standard));
155 _picture_asset->set_size (film()->frame_size());
156 _picture_asset->set_metadata (mxf_metadata());
158 if (film()->encrypted()) {
159 _picture_asset->set_key (film()->key());
160 _picture_asset->set_context_id (film()->context_id());
163 _picture_asset->set_file (asset);
164 _picture_asset_writer = _picture_asset->start_write (asset, _first_nonexistant_frame > 0);
165 } else if (!text_only) {
166 /* We already have a complete picture asset that we can just re-use */
167 /* XXX: what about if the encryption key changes? */
168 if (film()->three_d()) {
169 _picture_asset = make_shared<dcp::StereoPictureAsset>(asset);
171 _picture_asset = make_shared<dcp::MonoPictureAsset>(asset);
175 if (film()->audio_channels()) {
176 auto lang = film()->audio_language();
177 _sound_asset = make_shared<dcp::SoundAsset> (
178 dcp::Fraction(film()->video_frame_rate(), 1),
179 film()->audio_frame_rate(),
180 film()->audio_channels(),
181 lang ? *lang : dcp::LanguageTag("en-US"),
185 _sound_asset->set_metadata (mxf_metadata());
187 if (film()->encrypted()) {
188 _sound_asset->set_key (film()->key());
191 DCPOMATIC_ASSERT (film()->directory());
193 /* Write the sound asset into the film directory so that we leave the creation
194 of the DCP directory until the last minute.
196 _sound_asset_writer = _sound_asset->start_write (
197 film()->directory().get() / audio_asset_filename (_sound_asset, _reel_index, _reel_count, _content_summary),
198 film()->contains_atmos_content()
202 _default_font = dcp::ArrayData(default_font_file());
206 /** @param frame reel-relative frame */
208 ReelWriter::write_frame_info (Frame frame, Eyes eyes, dcp::FrameInfo info) const
210 auto handle = film()->info_file_handle(_period, false);
211 handle->get().seek(frame_info_position(frame, eyes), SEEK_SET);
212 handle->get().checked_write(&info.offset, sizeof(info.offset));
213 handle->get().checked_write(&info.size, sizeof(info.size));
214 handle->get().checked_write(info.hash.c_str(), info.hash.size());
219 ReelWriter::read_frame_info (shared_ptr<InfoFileHandle> info, Frame frame, Eyes eyes) const
221 dcp::FrameInfo frame_info;
222 info->get().seek(frame_info_position(frame, eyes), SEEK_SET);
223 info->get().checked_read(&frame_info.offset, sizeof(frame_info.offset));
224 info->get().checked_read(&frame_info.size, sizeof(frame_info.size));
226 char hash_buffer[33];
227 info->get().checked_read(hash_buffer, 32);
228 hash_buffer[32] = '\0';
229 frame_info.hash = hash_buffer;
236 ReelWriter::frame_info_position (Frame frame, Eyes eyes) const
240 return frame * _info_size;
242 return frame * _info_size * 2;
244 return frame * _info_size * 2 + _info_size;
246 DCPOMATIC_ASSERT (false);
249 DCPOMATIC_ASSERT (false);
254 ReelWriter::check_existing_picture_asset (boost::filesystem::path asset)
256 auto job = _job.lock ();
259 job->sub (_("Checking existing image data"));
262 /* Try to open the existing asset */
263 dcp::File asset_file(asset, "rb");
265 LOG_GENERAL ("Could not open existing asset at %1 (errno=%2)", asset.string(), errno);
268 LOG_GENERAL ("Opened existing asset at %1", asset.string());
271 shared_ptr<InfoFileHandle> info_file;
274 info_file = film()->info_file_handle (_period, true);
275 } catch (OpenFileError &) {
276 LOG_GENERAL_NC ("Could not open film info file");
280 /* Offset of the last dcp::FrameInfo in the info file */
281 int const n = (boost::filesystem::file_size(info_file->get().path()) / _info_size) - 1;
282 LOG_GENERAL ("The last FI is %1; info file is %2, info size %3", n, boost::filesystem::file_size(info_file->get().path()), _info_size);
284 Frame first_nonexistant_frame;
285 if (film()->three_d()) {
286 /* Start looking at the last left frame */
287 first_nonexistant_frame = n / 2;
289 first_nonexistant_frame = n;
292 while (!existing_picture_frame_ok(asset_file, info_file, first_nonexistant_frame) && first_nonexistant_frame > 0) {
293 --first_nonexistant_frame;
296 if (!film()->three_d() && first_nonexistant_frame > 0) {
297 /* If we are doing 3D we might have found a good L frame with no R, so only
298 do this if we're in 2D and we've just found a good B(oth) frame.
300 ++first_nonexistant_frame;
303 LOG_GENERAL ("Proceeding with first nonexistant frame %1", first_nonexistant_frame);
305 return first_nonexistant_frame;
310 ReelWriter::write (shared_ptr<const Data> encoded, Frame frame, Eyes eyes)
312 if (!_picture_asset_writer) {
313 /* We're not writing any data */
317 auto fin = _picture_asset_writer->write (encoded->data(), encoded->size());
318 write_frame_info (frame, eyes, fin);
319 _last_written[static_cast<int>(eyes)] = encoded;
324 ReelWriter::write (shared_ptr<const dcp::AtmosFrame> atmos, AtmosMetadata metadata)
327 _atmos_asset = metadata.create (dcp::Fraction(film()->video_frame_rate(), 1));
328 if (film()->encrypted()) {
329 _atmos_asset->set_key(film()->key());
331 _atmos_asset_writer = _atmos_asset->start_write (
332 film()->directory().get() / atmos_asset_filename (_atmos_asset, _reel_index, _reel_count, _content_summary)
335 _atmos_asset_writer->write (atmos);
340 ReelWriter::fake_write (int size)
342 if (!_picture_asset_writer) {
343 /* We're not writing any data */
347 _picture_asset_writer->fake_write (size);
352 ReelWriter::repeat_write (Frame frame, Eyes eyes)
354 if (!_picture_asset_writer) {
355 /* We're not writing any data */
359 auto fin = _picture_asset_writer->write (
360 _last_written[static_cast<int>(eyes)]->data(),
361 _last_written[static_cast<int>(eyes)]->size()
363 write_frame_info (frame, eyes, fin);
368 ReelWriter::finish (boost::filesystem::path output_dcp)
370 if (_picture_asset_writer && !_picture_asset_writer->finalize ()) {
371 /* Nothing was written to the picture asset */
372 LOG_GENERAL ("Nothing was written to reel %1 of %2", _reel_index, _reel_count);
373 _picture_asset.reset ();
376 if (_sound_asset_writer && !_sound_asset_writer->finalize ()) {
377 /* Nothing was written to the sound asset */
378 _sound_asset.reset ();
381 /* Hard-link any video asset file into the DCP */
382 if (_picture_asset) {
383 DCPOMATIC_ASSERT (_picture_asset->file());
384 boost::filesystem::path video_from = _picture_asset->file().get();
385 boost::filesystem::path video_to = output_dcp;
386 video_to /= video_asset_filename (_picture_asset, _reel_index, _reel_count, _content_summary);
387 /* There may be an existing "to" file if we are recreating a DCP in the same place without
390 boost::system::error_code ec;
391 boost::filesystem::remove (video_to, ec);
393 boost::filesystem::create_hard_link (video_from, video_to, ec);
395 LOG_WARNING_NC ("Hard-link failed; copying instead");
396 auto job = _job.lock ();
398 job->sub (_("Copying video file into DCP"));
400 copy_in_bits (video_from, video_to, bind(&Job::set_progress, job.get(), _1, false));
401 } catch (exception& e) {
402 LOG_ERROR ("Failed to copy video file from %1 to %2 (%3)", video_from.string(), video_to.string(), e.what());
403 throw FileError (e.what(), video_from);
406 boost::filesystem::copy_file (video_from, video_to, ec);
408 LOG_ERROR ("Failed to copy video file from %1 to %2 (%3)", video_from.string(), video_to.string(), ec.message());
409 throw FileError (ec.message(), video_from);
414 _picture_asset->set_file (video_to);
417 /* Move the audio asset into the DCP */
419 boost::filesystem::path audio_to = output_dcp;
420 auto const aaf = audio_asset_filename (_sound_asset, _reel_index, _reel_count, _content_summary);
423 boost::system::error_code ec;
424 boost::filesystem::rename (film()->file(aaf), audio_to, ec);
427 String::compose (_("could not move audio asset into the DCP (%1)"), ec.value ()), aaf
431 _sound_asset->set_file (audio_to);
435 _atmos_asset_writer->finalize ();
436 boost::filesystem::path atmos_to = output_dcp;
437 auto const aaf = atmos_asset_filename (_atmos_asset, _reel_index, _reel_count, _content_summary);
440 boost::system::error_code ec;
441 boost::filesystem::rename (film()->file(aaf), atmos_to, ec);
444 String::compose (_("could not move atmos asset into the DCP (%1)"), ec.value ()), aaf
448 _atmos_asset->set_file (atmos_to);
453 /** Try to make a ReelAsset for a subtitles or closed captions in a given period in the DCP.
454 * A SubtitleAsset can be provided, or we will use one from @ref refs if not.
456 template <class Interop, class SMPTE, class Result>
459 shared_ptr<dcp::SubtitleAsset> asset,
460 int64_t picture_duration,
461 shared_ptr<dcp::Reel> reel,
464 optional<string> content_summary,
465 list<ReferencedReelAsset> const & refs,
466 vector<FontData> const & fonts,
467 dcp::ArrayData default_font,
468 shared_ptr<const Film> film,
469 DCPTimePeriod period,
470 boost::filesystem::path output_dcp,
474 Frame const period_duration = period.duration().frames_round(film->video_frame_rate());
476 shared_ptr<Result> reel_asset;
479 /* Add the font to the subtitle content */
480 for (auto const& j: fonts) {
481 asset->add_font (j.id, j.data.get_value_or(default_font));
484 if (auto interop = dynamic_pointer_cast<dcp::InteropSubtitleAsset>(asset)) {
485 auto directory = output_dcp / interop->id ();
486 boost::filesystem::create_directories (directory);
487 interop->write (directory / subtitle_asset_filename(asset, reel_index, reel_count, content_summary));
488 reel_asset = make_shared<Interop> (
490 dcp::Fraction(film->video_frame_rate(), 1),
494 } else if (auto smpte = dynamic_pointer_cast<dcp::SMPTESubtitleAsset>(asset)) {
495 /* All our assets should be the same length; use the picture asset length here
496 as a reference to set the subtitle one. We'll use the duration rather than
497 the intrinsic duration; we don't care if the picture asset has been trimmed, we're
498 just interested in its presentation length.
500 smpte->set_intrinsic_duration(picture_duration);
502 output_dcp / subtitle_asset_filename(asset, reel_index, reel_count, content_summary)
504 reel_asset = make_shared<SMPTE> (
506 dcp::Fraction(film->video_frame_rate(), 1),
513 /* We don't have a subtitle asset of our own; hopefully we have one to reference */
515 auto k = dynamic_pointer_cast<Result> (j.asset);
516 if (k && j.period == period) {
518 /* If we have a hash for this asset in the CPL, assume that it is correct */
520 k->asset_ref()->set_hash (k->hash().get());
527 if (!text_only && reel_asset->actual_duration() != period_duration) {
528 throw ProgrammingError (
530 String::compose ("%1 vs %2", reel_asset->actual_duration(), period_duration)
533 reel->add (reel_asset);
540 shared_ptr<dcp::ReelPictureAsset>
541 ReelWriter::create_reel_picture (shared_ptr<dcp::Reel> reel, list<ReferencedReelAsset> const & refs) const
543 shared_ptr<dcp::ReelPictureAsset> reel_asset;
545 if (_picture_asset) {
546 /* We have made a picture asset of our own. Put it into the reel */
547 auto mono = dynamic_pointer_cast<dcp::MonoPictureAsset> (_picture_asset);
549 reel_asset = make_shared<dcp::ReelMonoPictureAsset>(mono, 0);
552 auto stereo = dynamic_pointer_cast<dcp::StereoPictureAsset> (_picture_asset);
554 reel_asset = make_shared<dcp::ReelStereoPictureAsset>(stereo, 0);
557 LOG_GENERAL ("no picture asset of our own; look through %1", refs.size());
558 /* We don't have a picture asset of our own; hopefully we have one to reference */
560 auto k = dynamic_pointer_cast<dcp::ReelPictureAsset> (j.asset);
562 LOG_GENERAL ("candidate picture asset period is %1-%2", j.period.from.get(), j.period.to.get());
564 if (k && j.period == _period) {
570 Frame const period_duration = _period.duration().frames_round(film()->video_frame_rate());
572 DCPOMATIC_ASSERT (reel_asset);
573 if (reel_asset->duration() != period_duration) {
574 throw ProgrammingError (
576 String::compose ("%1 vs %2", reel_asset->actual_duration(), period_duration)
579 reel->add (reel_asset);
581 /* If we have a hash for this asset in the CPL, assume that it is correct */
582 if (reel_asset->hash()) {
583 reel_asset->asset_ref()->set_hash (reel_asset->hash().get());
591 ReelWriter::create_reel_sound (shared_ptr<dcp::Reel> reel, list<ReferencedReelAsset> const & refs) const
593 shared_ptr<dcp::ReelSoundAsset> reel_asset;
596 /* We have made a sound asset of our own. Put it into the reel */
597 reel_asset = make_shared<dcp::ReelSoundAsset>(_sound_asset, 0);
599 LOG_GENERAL ("no sound asset of our own; look through %1", refs.size());
600 /* We don't have a sound asset of our own; hopefully we have one to reference */
602 auto k = dynamic_pointer_cast<dcp::ReelSoundAsset> (j.asset);
604 LOG_GENERAL ("candidate sound asset period is %1-%2", j.period.from.get(), j.period.to.get());
606 if (k && j.period == _period) {
608 /* If we have a hash for this asset in the CPL, assume that it is correct */
610 k->asset_ref()->set_hash (k->hash().get());
616 auto const period_duration = _period.duration().frames_round(film()->video_frame_rate());
618 DCPOMATIC_ASSERT (reel_asset);
619 if (reel_asset->actual_duration() != period_duration) {
621 "Reel sound asset has length %1 but reel period is %2",
622 reel_asset->actual_duration(),
625 if (reel_asset->actual_duration() != period_duration) {
626 throw ProgrammingError (
628 String::compose ("%1 vs %2", reel_asset->actual_duration(), period_duration)
633 reel->add (reel_asset);
638 ReelWriter::create_reel_text (
639 shared_ptr<dcp::Reel> reel,
640 list<ReferencedReelAsset> const & refs,
641 vector<FontData> const& fonts,
643 boost::filesystem::path output_dcp,
644 bool ensure_subtitles,
645 set<DCPTextTrack> ensure_closed_captions
648 auto subtitle = maybe_add_text<dcp::ReelInteropSubtitleAsset, dcp::ReelSMPTESubtitleAsset, dcp::ReelSubtitleAsset> (
649 _subtitle_asset, duration, reel, _reel_index, _reel_count, _content_summary, refs, fonts, _default_font, film(), _period, output_dcp, _text_only
653 /* We have a subtitle asset that we either made or are referencing */
654 if (auto main_language = film()->subtitle_languages().first) {
655 subtitle->set_language (*main_language);
657 } else if (ensure_subtitles) {
658 /* We had no subtitle asset, but we've been asked to make sure there is one */
659 subtitle = maybe_add_text<dcp::ReelInteropSubtitleAsset, dcp::ReelSMPTESubtitleAsset, dcp::ReelSubtitleAsset> (
660 empty_text_asset(TextType::OPEN_SUBTITLE, optional<DCPTextTrack>(), true),
676 for (auto const& i: _closed_caption_assets) {
677 auto a = maybe_add_text<dcp::ReelInteropClosedCaptionAsset, dcp::ReelSMPTEClosedCaptionAsset, dcp::ReelClosedCaptionAsset> (
678 i.second, duration, reel, _reel_index, _reel_count, _content_summary, refs, fonts, _default_font, film(), _period, output_dcp, _text_only
680 DCPOMATIC_ASSERT (a);
681 a->set_annotation_text (i.first.name);
682 if (i.first.language) {
683 a->set_language (i.first.language.get());
686 ensure_closed_captions.erase (i.first);
689 /* Make empty tracks for anything we've been asked to ensure but that we haven't added */
690 for (auto i: ensure_closed_captions) {
691 auto a = maybe_add_text<dcp::ReelInteropClosedCaptionAsset, dcp::ReelSMPTEClosedCaptionAsset, dcp::ReelClosedCaptionAsset> (
692 empty_text_asset(TextType::CLOSED_CAPTION, i, true),
706 DCPOMATIC_ASSERT (a);
707 a->set_annotation_text (i.name);
709 a->set_language (i.language.get());
716 ReelWriter::create_reel_markers (shared_ptr<dcp::Reel> reel) const
718 auto markers = film()->markers();
719 film()->add_ffoc_lfoc(markers);
720 Film::Markers reel_markers;
721 for (auto const& i: markers) {
722 if (_period.contains(i.second)) {
723 reel_markers[i.first] = i.second;
727 if (!reel_markers.empty ()) {
728 auto ma = make_shared<dcp::ReelMarkersAsset>(dcp::Fraction(film()->video_frame_rate(), 1), reel->duration());
729 for (auto const& i: reel_markers) {
730 DCPTime relative = i.second - _period.from;
731 auto hmsf = relative.split (film()->video_frame_rate());
732 ma->set (i.first, dcp::Time(hmsf.h, hmsf.m, hmsf.s, hmsf.f, film()->video_frame_rate()));
739 /** @param ensure_subtitles true to make sure the reel has a subtitle asset.
740 * @param ensure_closed_captions make sure the reel has these closed caption tracks.
742 shared_ptr<dcp::Reel>
743 ReelWriter::create_reel (
744 list<ReferencedReelAsset> const & refs,
745 vector<FontData> const & fonts,
746 boost::filesystem::path output_dcp,
747 bool ensure_subtitles,
748 set<DCPTextTrack> ensure_closed_captions
751 LOG_GENERAL ("create_reel for %1-%2; %3 of %4", _period.from.get(), _period.to.get(), _reel_index, _reel_count);
753 auto reel = make_shared<dcp::Reel>();
755 /* This is a bit of a hack; in the strange `_text_only' mode we have no picture, so we don't know
756 * how long the subtitle / CCAP assets should be. However, since we're only writing them to see
757 * how big they are, we don't care about that.
759 int64_t duration = 0;
761 auto reel_picture_asset = create_reel_picture (reel, refs);
762 duration = reel_picture_asset->actual_duration ();
763 create_reel_sound (reel, refs);
764 create_reel_markers (reel);
767 create_reel_text (reel, refs, fonts, duration, output_dcp, ensure_subtitles, ensure_closed_captions);
770 reel->add (make_shared<dcp::ReelAtmosAsset>(_atmos_asset, 0));
777 ReelWriter::calculate_digests (std::function<void (float)> set_progress)
780 if (_picture_asset) {
781 _picture_asset->hash (set_progress);
785 _sound_asset->hash (set_progress);
789 _atmos_asset->hash (set_progress);
791 } catch (boost::thread_interrupted) {
792 /* set_progress contains an interruption_point, so any of these methods
793 * may throw thread_interrupted, at which point we just give up.
799 ReelWriter::start () const
801 return _period.from.frames_floor (film()->video_frame_rate());
806 ReelWriter::write (shared_ptr<const AudioBuffers> audio)
808 if (!_sound_asset_writer) {
812 DCPOMATIC_ASSERT (audio);
813 _sound_asset_writer->write (audio->data(), audio->frames());
817 shared_ptr<dcp::SubtitleAsset>
818 ReelWriter::empty_text_asset (TextType type, optional<DCPTextTrack> track, bool with_dummy) const
820 shared_ptr<dcp::SubtitleAsset> asset;
822 auto lang = film()->subtitle_languages();
823 if (film()->interop()) {
824 auto s = make_shared<dcp::InteropSubtitleAsset>();
825 s->set_movie_title (film()->name());
826 if (type == TextType::OPEN_SUBTITLE) {
827 s->set_language (lang.first ? lang.first->to_string() : "Unknown");
828 } else if (track->language) {
829 s->set_language (track->language->to_string());
831 s->set_reel_number (raw_convert<string> (_reel_index + 1));
834 auto s = make_shared<dcp::SMPTESubtitleAsset>();
835 s->set_content_title_text (film()->name());
836 s->set_metadata (mxf_metadata());
837 if (type == TextType::OPEN_SUBTITLE && lang.first) {
838 s->set_language (*lang.first);
839 } else if (track && track->language) {
840 s->set_language (dcp::LanguageTag(track->language->to_string()));
842 s->set_edit_rate (dcp::Fraction (film()->video_frame_rate(), 1));
843 s->set_reel_number (_reel_index + 1);
844 s->set_time_code_rate (film()->video_frame_rate());
845 s->set_start_time (dcp::Time ());
846 if (film()->encrypted()) {
847 s->set_key (film()->key());
851 std::make_shared<dcp::SubtitleString>(
852 optional<std::string>(),
859 dcp::Time(0, 0, 0, 0, 24),
860 dcp::Time(0, 0, 1, 0, 24),
883 ReelWriter::write (PlayerText subs, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
885 shared_ptr<dcp::SubtitleAsset> asset;
888 case TextType::OPEN_SUBTITLE:
889 asset = _subtitle_asset;
891 case TextType::CLOSED_CAPTION:
892 DCPOMATIC_ASSERT (track);
893 asset = _closed_caption_assets[*track];
896 DCPOMATIC_ASSERT (false);
900 asset = empty_text_asset (type, track, false);
904 case TextType::OPEN_SUBTITLE:
905 _subtitle_asset = asset;
907 case TextType::CLOSED_CAPTION:
908 DCPOMATIC_ASSERT (track);
909 _closed_caption_assets[*track] = asset;
912 DCPOMATIC_ASSERT (false);
915 /* timecode rate for subtitles we emit; we might as well stick to ms accuracy here, I think */
916 auto const tcr = 1000;
918 for (auto i: subs.string) {
919 i.set_in (dcp::Time(period.from.seconds() - _period.from.seconds(), tcr));
920 i.set_out (dcp::Time(period.to.seconds() - _period.from.seconds(), tcr));
921 asset->add (make_shared<dcp::SubtitleString>(i));
924 for (auto i: subs.bitmap) {
926 make_shared<dcp::SubtitleImage>(
927 image_as_png(i.image),
928 dcp::Time(period.from.seconds() - _period.from.seconds(), tcr),
929 dcp::Time(period.to.seconds() - _period.from.seconds(), tcr),
930 i.rectangle.x, dcp::HAlign::LEFT, i.rectangle.y, dcp::VAlign::TOP,
931 dcp::Time(), dcp::Time()
939 ReelWriter::existing_picture_frame_ok (dcp::File& asset_file, shared_ptr<InfoFileHandle> info_file, Frame frame) const
941 LOG_GENERAL ("Checking existing picture frame %1", frame);
943 /* Read the data from the info file; for 3D we just check the left
944 frames until we find a good one.
946 auto const info = read_frame_info (info_file, frame, film()->three_d() ? Eyes::LEFT : Eyes::BOTH);
950 /* Read the data from the asset and hash it */
951 asset_file.seek(info.offset, SEEK_SET);
952 ArrayData data (info.size);
953 size_t const read = asset_file.read(data.data(), 1, data.size());
954 LOG_GENERAL ("Read %1 bytes of asset data; wanted %2", read, info.size);
955 if (read != static_cast<size_t> (data.size ())) {
956 LOG_GENERAL ("Existing frame %1 is incomplete", frame);
960 digester.add (data.data(), data.size());
961 LOG_GENERAL ("Hash %1 vs %2", digester.get(), info.hash);
962 if (digester.get() != info.hash) {
963 LOG_GENERAL ("Existing frame %1 failed hash check", frame);