2 Copyright (C) 2012-2021 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 "compose.hpp"
27 #include "dcpomatic_log.h"
28 #include "dcp_video.h"
29 #include "dcp_content_type.h"
30 #include "audio_mapping.h"
34 #include "audio_buffers.h"
36 #include "font_data.h"
38 #include "reel_writer.h"
39 #include "text_content.h"
41 #include <dcp/locale_convert.h>
42 #include <dcp/reel_file_asset.h>
51 /* OS X strikes again */
56 using std::dynamic_pointer_cast;
59 using std::make_shared;
64 using std::shared_ptr;
68 using boost::optional;
69 #if BOOST_VERSION >= 106100
70 using namespace boost::placeholders;
74 using namespace dcpomatic;
77 /** @param j Job to report progress to, or 0.
78 * @param text_only true to enable only the text (subtitle/ccap) parts of the writer.
80 Writer::Writer (weak_ptr<const Film> weak_film, weak_ptr<Job> j, bool text_only)
81 : WeakConstFilm (weak_film)
83 /* These will be reset to sensible values when J2KEncoder is created */
84 , _maximum_frames_in_memory (8)
85 , _maximum_queue_size (8)
86 , _text_only (text_only)
88 auto job = _job.lock ();
91 auto const reels = film()->reels();
93 _reels.push_back (ReelWriter(weak_film, p, job, reel_index++, reels.size(), text_only));
96 _last_written.resize (reels.size());
98 /* We can keep track of the current audio, subtitle and closed caption reels easily because audio
99 and captions arrive to the Writer in sequence. This is not so for video.
101 _audio_reel = _reels.begin ();
102 _subtitle_reel = _reels.begin ();
103 for (auto i: film()->closed_caption_tracks()) {
104 _caption_reels[i] = _reels.begin ();
106 _atmos_reel = _reels.begin ();
108 /* Check that the signer is OK */
110 if (!Config::instance()->signer_chain()->valid(&reason)) {
111 throw InvalidSignerError (reason);
120 _thread = boost::thread (boost::bind(&Writer::thread, this));
121 #ifdef DCPOMATIC_LINUX
122 pthread_setname_np (_thread.native_handle(), "writer");
131 terminate_thread (false);
136 /** Pass a video frame to the writer for writing to disk at some point.
137 * This method can be called with frames out of order.
138 * @param encoded JPEG2000-encoded data.
139 * @param frame Frame index within the DCP.
140 * @param eyes Eyes that this frame image is for.
143 Writer::write (shared_ptr<const Data> encoded, Frame frame, Eyes eyes)
145 boost::mutex::scoped_lock lock (_state_mutex);
147 while (_queued_full_in_memory > _maximum_frames_in_memory) {
148 /* There are too many full frames in memory; wake the main writer thread and
149 wait until it sorts everything out */
150 _empty_condition.notify_all ();
151 _full_condition.wait (lock);
155 qi.type = QueueItem::Type::FULL;
156 qi.encoded = encoded;
157 qi.reel = video_reel (frame);
158 qi.frame = frame - _reels[qi.reel].start ();
160 if (film()->three_d() && eyes == Eyes::BOTH) {
161 /* 2D material in a 3D DCP; fake the 3D */
162 qi.eyes = Eyes::LEFT;
163 _queue.push_back (qi);
164 ++_queued_full_in_memory;
165 qi.eyes = Eyes::RIGHT;
166 _queue.push_back (qi);
167 ++_queued_full_in_memory;
170 _queue.push_back (qi);
171 ++_queued_full_in_memory;
174 /* Now there's something to do: wake anything wait()ing on _empty_condition */
175 _empty_condition.notify_all ();
180 Writer::can_repeat (Frame frame) const
182 return frame > _reels[video_reel(frame)].start();
186 /** Repeat the last frame that was written to a reel as a new frame.
187 * @param frame Frame index within the DCP of the new (repeated) frame.
188 * @param eyes Eyes that this repeated frame image is for.
191 Writer::repeat (Frame frame, Eyes eyes)
193 boost::mutex::scoped_lock lock (_state_mutex);
195 while (_queue.size() > _maximum_queue_size && have_sequenced_image_at_queue_head()) {
196 /* The queue is too big, and the main writer thread can run and fix it, so
197 wake it and wait until it has done.
199 _empty_condition.notify_all ();
200 _full_condition.wait (lock);
204 qi.type = QueueItem::Type::REPEAT;
205 qi.reel = video_reel (frame);
206 qi.frame = frame - _reels[qi.reel].start ();
207 if (film()->three_d() && eyes == Eyes::BOTH) {
208 qi.eyes = Eyes::LEFT;
209 _queue.push_back (qi);
210 qi.eyes = Eyes::RIGHT;
211 _queue.push_back (qi);
214 _queue.push_back (qi);
217 /* Now there's something to do: wake anything wait()ing on _empty_condition */
218 _empty_condition.notify_all ();
223 Writer::fake_write (Frame frame, Eyes eyes)
225 boost::mutex::scoped_lock lock (_state_mutex);
227 while (_queue.size() > _maximum_queue_size && have_sequenced_image_at_queue_head()) {
228 /* The queue is too big, and the main writer thread can run and fix it, so
229 wake it and wait until it has done.
231 _empty_condition.notify_all ();
232 _full_condition.wait (lock);
235 size_t const reel = video_reel (frame);
236 Frame const frame_in_reel = frame - _reels[reel].start ();
239 qi.type = QueueItem::Type::FAKE;
242 shared_ptr<InfoFileHandle> info_file = film()->info_file_handle(_reels[reel].period(), true);
243 qi.size = _reels[reel].read_frame_info(info_file, frame_in_reel, eyes).size;
247 qi.frame = frame_in_reel;
248 if (film()->three_d() && eyes == Eyes::BOTH) {
249 qi.eyes = Eyes::LEFT;
250 _queue.push_back (qi);
251 qi.eyes = Eyes::RIGHT;
252 _queue.push_back (qi);
255 _queue.push_back (qi);
258 /* Now there's something to do: wake anything wait()ing on _empty_condition */
259 _empty_condition.notify_all ();
263 /** Write some audio frames to the DCP.
264 * @param audio Audio data.
265 * @param time Time of this data within the DCP.
266 * This method is not thread safe.
269 Writer::write (shared_ptr<const AudioBuffers> audio, DCPTime const time)
271 DCPOMATIC_ASSERT (audio);
273 int const afr = film()->audio_frame_rate();
275 DCPTime const end = time + DCPTime::from_frames(audio->frames(), afr);
277 /* The audio we get might span a reel boundary, and if so we have to write it in bits */
282 if (_audio_reel == _reels.end ()) {
283 /* This audio is off the end of the last reel; ignore it */
287 if (end <= _audio_reel->period().to) {
288 /* Easy case: we can write all the audio to this reel */
289 _audio_reel->write (audio);
291 } else if (_audio_reel->period().to <= t) {
292 /* This reel is entirely before the start of our audio; just skip the reel */
295 /* This audio is over a reel boundary; split the audio into two and write the first part */
296 DCPTime part_lengths[2] = {
297 _audio_reel->period().to - t,
298 end - _audio_reel->period().to
301 /* Be careful that part_lengths[0] + part_lengths[1] can't be bigger than audio->frames() */
302 Frame part_frames[2] = {
303 part_lengths[0].frames_ceil(afr),
304 part_lengths[1].frames_floor(afr)
307 DCPOMATIC_ASSERT ((part_frames[0] + part_frames[1]) <= audio->frames());
309 if (part_frames[0]) {
310 shared_ptr<AudioBuffers> part (new AudioBuffers(audio, part_frames[0], 0));
311 _audio_reel->write (part);
314 if (part_frames[1]) {
315 audio.reset (new AudioBuffers(audio, part_frames[1], part_frames[0]));
321 t += part_lengths[0];
328 Writer::write (shared_ptr<const dcp::AtmosFrame> atmos, DCPTime time, AtmosMetadata metadata)
330 if (_atmos_reel->period().to == time) {
332 DCPOMATIC_ASSERT (_atmos_reel != _reels.end());
335 /* We assume that we get a video frame's worth of data here */
336 _atmos_reel->write (atmos, metadata);
340 /** Caller must hold a lock on _state_mutex */
342 Writer::have_sequenced_image_at_queue_head ()
344 if (_queue.empty ()) {
349 auto const & f = _queue.front();
350 return _last_written[f.reel].next(f);
355 Writer::LastWritten::next (QueueItem qi) const
357 if (qi.eyes == Eyes::BOTH) {
359 return qi.frame == (_frame + 1);
364 if (_eyes == Eyes::LEFT && qi.frame == _frame && qi.eyes == Eyes::RIGHT) {
368 if (_eyes == Eyes::RIGHT && qi.frame == (_frame + 1) && qi.eyes == Eyes::LEFT) {
377 Writer::LastWritten::update (QueueItem qi)
388 start_of_thread ("Writer");
392 boost::mutex::scoped_lock lock (_state_mutex);
396 if (_finish || _queued_full_in_memory > _maximum_frames_in_memory || have_sequenced_image_at_queue_head ()) {
397 /* We've got something to do: go and do it */
401 /* Nothing to do: wait until something happens which may indicate that we do */
402 LOG_TIMING (N_("writer-sleep queue=%1"), _queue.size());
403 _empty_condition.wait (lock);
404 LOG_TIMING (N_("writer-wake queue=%1"), _queue.size());
407 /* We stop here if we have been asked to finish, and if either the queue
408 is empty or we do not have a sequenced image at its head (if this is the
409 case we will never terminate as no new frames will be sent once
412 if (_finish && (!have_sequenced_image_at_queue_head() || _queue.empty())) {
413 /* (Hopefully temporarily) log anything that was not written */
414 if (!_queue.empty() && !have_sequenced_image_at_queue_head()) {
415 LOG_WARNING (N_("Finishing writer with a left-over queue of %1:"), _queue.size());
416 for (auto const& i: _queue) {
417 if (i.type == QueueItem::Type::FULL) {
418 LOG_WARNING (N_("- type FULL, frame %1, eyes %2"), i.frame, (int) i.eyes);
420 LOG_WARNING (N_("- type FAKE, size %1, frame %2, eyes %3"), i.size, i.frame, (int) i.eyes);
427 /* Write any frames that we can write; i.e. those that are in sequence. */
428 while (have_sequenced_image_at_queue_head ()) {
429 auto qi = _queue.front ();
430 _last_written[qi.reel].update (qi);
432 if (qi.type == QueueItem::Type::FULL && qi.encoded) {
433 --_queued_full_in_memory;
438 auto& reel = _reels[qi.reel];
441 case QueueItem::Type::FULL:
442 LOG_DEBUG_ENCODE (N_("Writer FULL-writes %1 (%2)"), qi.frame, (int) qi.eyes);
444 qi.encoded.reset (new ArrayData(film()->j2c_path(qi.reel, qi.frame, qi.eyes, false)));
446 reel.write (qi.encoded, qi.frame, qi.eyes);
449 case QueueItem::Type::FAKE:
450 LOG_DEBUG_ENCODE (N_("Writer FAKE-writes %1"), qi.frame);
451 reel.fake_write (qi.size);
454 case QueueItem::Type::REPEAT:
455 LOG_DEBUG_ENCODE (N_("Writer REPEAT-writes %1"), qi.frame);
456 reel.repeat_write (qi.frame, qi.eyes);
462 _full_condition.notify_all ();
465 while (_queued_full_in_memory > _maximum_frames_in_memory) {
466 /* Too many frames in memory which can't yet be written to the stream.
467 Write some FULL frames to disk.
470 /* Find one from the back of the queue */
472 auto i = _queue.rbegin ();
473 while (i != _queue.rend() && (i->type != QueueItem::Type::FULL || !i->encoded)) {
477 DCPOMATIC_ASSERT (i != _queue.rend());
479 /* For the log message below */
480 int const awaiting = _last_written[_queue.front().reel].frame() + 1;
483 /* i is valid here, even though we don't hold a lock on the mutex,
484 since list iterators are unaffected by insertion and only this
485 thread could erase the last item in the list.
488 LOG_GENERAL ("Writer full; pushes %1 to disk while awaiting %2", i->frame, awaiting);
490 i->encoded->write_via_temp (
491 film()->j2c_path(i->reel, i->frame, i->eyes, true),
492 film()->j2c_path(i->reel, i->frame, i->eyes, false)
497 --_queued_full_in_memory;
498 _full_condition.notify_all ();
509 Writer::terminate_thread (bool can_throw)
511 boost::this_thread::disable_interruption dis;
513 boost::mutex::scoped_lock lock (_state_mutex);
516 _empty_condition.notify_all ();
517 _full_condition.notify_all ();
531 Writer::calculate_digests ()
533 auto job = _job.lock ();
535 job->sub (_("Computing digests"));
538 boost::asio::io_service service;
539 boost::thread_group pool;
541 auto work = make_shared<boost::asio::io_service::work>(service);
543 int const threads = max (1, Config::instance()->master_encoding_threads());
545 for (int i = 0; i < threads; ++i) {
546 pool.create_thread (boost::bind (&boost::asio::io_service::run, &service));
549 std::function<void (float)> set_progress;
551 set_progress = boost::bind (&Writer::set_digest_progress, this, job.get(), _1);
553 set_progress = [](float) {
554 boost::this_thread::interruption_point();
558 for (auto& i: _reels) {
559 service.post (boost::bind (&ReelWriter::calculate_digests, &i, set_progress));
561 service.post (boost::bind (&Writer::calculate_referenced_digests, this, set_progress));
567 } catch (boost::thread_interrupted) {
568 /* join_all was interrupted, so we need to interrupt the threads
569 * in our pool then try again to join them.
571 pool.interrupt_all ();
579 /** @param output_dcp Path to DCP folder to write */
581 Writer::finish (boost::filesystem::path output_dcp)
583 if (_thread.joinable()) {
584 LOG_GENERAL_NC ("Terminating writer thread");
585 terminate_thread (true);
588 LOG_GENERAL_NC ("Finishing ReelWriters");
590 for (auto& i: _reels) {
591 write_hanging_text (i);
592 i.finish (output_dcp);
595 LOG_GENERAL_NC ("Writing XML");
597 dcp::DCP dcp (output_dcp);
599 auto cpl = make_shared<dcp::CPL>(
601 film()->dcp_content_type()->libdcp_kind(),
602 film()->interop() ? dcp::Standard::INTEROP : dcp::Standard::SMPTE
607 calculate_digests ();
611 for (auto& i: _reels) {
612 cpl->add (i.create_reel(_reel_assets, _fonts, output_dcp, _have_subtitles, _have_closed_captions));
617 auto creator = Config::instance()->dcp_creator();
618 if (creator.empty()) {
619 creator = String::compose("DCP-o-matic %1 %2", dcpomatic_version, dcpomatic_git_commit);
622 auto issuer = Config::instance()->dcp_issuer();
623 if (issuer.empty()) {
624 issuer = String::compose("DCP-o-matic %1 %2", dcpomatic_version, dcpomatic_git_commit);
627 cpl->set_ratings (film()->ratings());
629 vector<dcp::ContentVersion> cv;
630 for (auto i: film()->content_versions()) {
631 cv.push_back (dcp::ContentVersion(i));
633 cpl->set_content_versions (cv);
635 cpl->set_full_content_title_text (film()->name());
636 cpl->set_full_content_title_text_language (film()->name_language());
637 if (film()->release_territory()) {
638 cpl->set_release_territory (*film()->release_territory());
640 cpl->set_version_number (film()->version_number());
641 cpl->set_status (film()->status());
642 if (film()->chain()) {
643 cpl->set_chain (*film()->chain());
645 if (film()->distributor()) {
646 cpl->set_distributor (*film()->distributor());
648 if (film()->facility()) {
649 cpl->set_facility (*film()->facility());
651 if (film()->luminance()) {
652 cpl->set_luminance (*film()->luminance());
655 auto ac = film()->mapped_audio_channels();
656 dcp::MCASoundField field = (
657 find(ac.begin(), ac.end(), static_cast<int>(dcp::Channel::BSL)) != ac.end() ||
658 find(ac.begin(), ac.end(), static_cast<int>(dcp::Channel::BSR)) != ac.end()
659 ) ? dcp::MCASoundField::SEVEN_POINT_ONE : dcp::MCASoundField::FIVE_POINT_ONE;
661 dcp::MainSoundConfiguration msc (field, film()->audio_channels());
663 if (static_cast<int>(i) < film()->audio_channels()) {
664 msc.set_mapping (i, static_cast<dcp::Channel>(i));
668 cpl->set_main_sound_configuration (msc.to_string());
669 cpl->set_main_sound_sample_rate (film()->audio_frame_rate());
670 cpl->set_main_picture_stored_area (film()->frame_size());
672 auto active_area = film()->active_area();
673 if (active_area.width > 0 && active_area.height > 0) {
674 /* It's not allowed to have a zero active area width or height */
675 cpl->set_main_picture_active_area (active_area);
678 auto sl = film()->subtitle_languages().second;
680 cpl->set_additional_subtitle_languages(sl);
683 auto signer = Config::instance()->signer_chain();
684 /* We did check earlier, but check again here to be on the safe side */
686 if (!signer->valid (&reason)) {
687 throw InvalidSignerError (reason);
693 dcp::LocalTime().as_string(),
696 Config::instance()->dcp_metadata_filename_format()
700 N_("Wrote %1 FULL, %2 FAKE, %3 REPEAT, %4 pushed to disk"), _full_written, _fake_written, _repeat_written, _pushed_to_disk
703 write_cover_sheet (output_dcp);
708 Writer::write_cover_sheet (boost::filesystem::path output_dcp)
710 auto const cover = film()->file("COVER_SHEET.txt");
711 auto f = fopen_boost (cover, "w");
713 throw OpenFileError (cover, errno, OpenFileError::WRITE);
716 auto text = Config::instance()->cover_sheet ();
717 boost::algorithm::replace_all (text, "$CPL_NAME", film()->name());
718 boost::algorithm::replace_all (text, "$TYPE", film()->dcp_content_type()->pretty_name());
719 boost::algorithm::replace_all (text, "$CONTAINER", film()->container()->container_nickname());
721 auto audio_language = film()->audio_language();
722 if (audio_language) {
723 boost::algorithm::replace_all (text, "$AUDIO_LANGUAGE", audio_language->description());
725 boost::algorithm::replace_all (text, "$AUDIO_LANGUAGE", _("None"));
728 auto subtitle_languages = film()->subtitle_languages();
729 if (subtitle_languages.first) {
730 boost::algorithm::replace_all (text, "$SUBTITLE_LANGUAGE", subtitle_languages.first->description());
732 boost::algorithm::replace_all (text, "$SUBTITLE_LANGUAGE", _("None"));
735 boost::uintmax_t size = 0;
737 auto i = boost::filesystem::recursive_directory_iterator(output_dcp);
738 i != boost::filesystem::recursive_directory_iterator();
740 if (boost::filesystem::is_regular_file (i->path())) {
741 size += boost::filesystem::file_size (i->path());
745 if (size > (1000000000L)) {
746 boost::algorithm::replace_all (text, "$SIZE", String::compose("%1GB", dcp::locale_convert<string>(size / 1000000000.0, 1, true)));
748 boost::algorithm::replace_all (text, "$SIZE", String::compose("%1MB", dcp::locale_convert<string>(size / 1000000.0, 1, true)));
751 auto ch = audio_channel_types (film()->mapped_audio_channels(), film()->audio_channels());
752 auto description = String::compose("%1.%2", ch.first, ch.second);
754 if (description == "0.0") {
755 description = _("None");
756 } else if (description == "1.0") {
757 description = _("Mono");
758 } else if (description == "2.0") {
759 description = _("Stereo");
761 boost::algorithm::replace_all (text, "$AUDIO", description);
763 auto const hmsf = film()->length().split(film()->video_frame_rate());
765 if (hmsf.h == 0 && hmsf.m == 0) {
766 length = String::compose("%1s", hmsf.s);
767 } else if (hmsf.h == 0 && hmsf.m > 0) {
768 length = String::compose("%1m%2s", hmsf.m, hmsf.s);
769 } else if (hmsf.h > 0 && hmsf.m > 0) {
770 length = String::compose("%1h%2m%3s", hmsf.h, hmsf.m, hmsf.s);
773 boost::algorithm::replace_all (text, "$LENGTH", length);
775 checked_fwrite (text.c_str(), text.length(), f, cover);
780 /** @param frame Frame index within the whole DCP.
781 * @return true if we can fake-write this frame.
784 Writer::can_fake_write (Frame frame) const
786 if (film()->encrypted()) {
787 /* We need to re-write the frame because the asset ID is embedded in the HMAC... I think... */
791 /* We have to do a proper write of the first frame so that we can set up the JPEG2000
792 parameters in the asset writer.
795 auto const & reel = _reels[video_reel(frame)];
797 /* Make frame relative to the start of the reel */
798 frame -= reel.start ();
799 return (frame != 0 && frame < reel.first_nonexistant_frame());
803 /** @param track Closed caption track if type == TextType::CLOSED_CAPTION */
805 Writer::write (PlayerText text, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
807 vector<ReelWriter>::iterator* reel = nullptr;
810 case TextType::OPEN_SUBTITLE:
811 reel = &_subtitle_reel;
812 _have_subtitles = true;
814 case TextType::CLOSED_CAPTION:
815 DCPOMATIC_ASSERT (track);
816 DCPOMATIC_ASSERT (_caption_reels.find(*track) != _caption_reels.end());
817 reel = &_caption_reels[*track];
818 _have_closed_captions.insert (*track);
821 DCPOMATIC_ASSERT (false);
824 DCPOMATIC_ASSERT (*reel != _reels.end());
825 while ((*reel)->period().to <= period.from) {
827 DCPOMATIC_ASSERT (*reel != _reels.end());
828 write_hanging_text (**reel);
831 auto back_off = [this](DCPTimePeriod period) {
832 period.to -= DCPTime::from_frames(2, film()->video_frame_rate());
836 if (period.to > (*reel)->period().to) {
837 /* This text goes off the end of the reel. Store parts of it that should go into
840 for (auto i = std::next(*reel); i != _reels.end(); ++i) {
841 auto overlap = i->period().overlap(period);
843 _hanging_texts.push_back (HangingText{text, type, track, back_off(*overlap)});
846 /* Back off from the reel boundary by a couple of frames to avoid tripping checks
847 * for subtitles being too close together.
849 period.to = (*reel)->period().to;
850 period = back_off(period);
853 (*reel)->write (text, type, track, period);
858 Writer::write (vector<FontData> fonts)
860 /* Just keep a list of unique fonts and we'll deal with them in ::finish */
862 for (auto const& i: fonts) {
864 for (auto& j: _fonts) {
871 _fonts.push_back (i);
878 operator< (QueueItem const & a, QueueItem const & b)
880 if (a.reel != b.reel) {
881 return a.reel < b.reel;
884 if (a.frame != b.frame) {
885 return a.frame < b.frame;
888 return static_cast<int> (a.eyes) < static_cast<int> (b.eyes);
893 operator== (QueueItem const & a, QueueItem const & b)
895 return a.reel == b.reel && a.frame == b.frame && a.eyes == b.eyes;
900 Writer::set_encoder_threads (int threads)
902 boost::mutex::scoped_lock lm (_state_mutex);
903 _maximum_frames_in_memory = lrint (threads * Config::instance()->frames_in_memory_multiplier());
904 _maximum_queue_size = threads * 16;
909 Writer::write (ReferencedReelAsset asset)
911 _reel_assets.push_back (asset);
916 Writer::video_reel (int frame) const
918 auto t = DCPTime::from_frames (frame, film()->video_frame_rate());
920 while (i < _reels.size() && !_reels[i].period().contains (t)) {
924 DCPOMATIC_ASSERT (i < _reels.size ());
930 Writer::set_digest_progress (Job* job, float progress)
932 boost::mutex::scoped_lock lm (_digest_progresses_mutex);
934 _digest_progresses[boost::this_thread::get_id()] = progress;
935 float min_progress = FLT_MAX;
936 for (auto const& i: _digest_progresses) {
937 min_progress = min (min_progress, i.second);
940 job->set_progress (min_progress);
945 boost::this_thread::interruption_point();
949 /** Calculate hashes for any referenced MXF assets which do not already have one */
951 Writer::calculate_referenced_digests (std::function<void (float)> set_progress)
954 for (auto const& i: _reel_assets) {
955 auto file = dynamic_pointer_cast<dcp::ReelFileAsset>(i.asset);
956 if (file && !file->hash()) {
957 file->asset_ref().asset()->hash (set_progress);
958 file->set_hash (file->asset_ref().asset()->hash());
961 } catch (boost::thread_interrupted) {
962 /* set_progress contains an interruption_point, so any of these methods
963 * may throw thread_interrupted, at which point we just give up.
969 Writer::write_hanging_text (ReelWriter& reel)
971 vector<HangingText> new_hanging_texts;
972 for (auto i: _hanging_texts) {
973 if (i.period.from == reel.period().from) {
974 reel.write (i.text, i.type, i.track, i.period);
976 new_hanging_texts.push_back (i);
979 _hanging_texts = new_hanging_texts;