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_creator (creator);
628 cpl->set_issuer (issuer);
630 cpl->set_ratings (film()->ratings());
632 vector<dcp::ContentVersion> cv;
633 for (auto i: film()->content_versions()) {
634 cv.push_back (dcp::ContentVersion(i));
636 cpl->set_content_versions (cv);
638 cpl->set_full_content_title_text (film()->name());
639 cpl->set_full_content_title_text_language (film()->name_language());
640 if (film()->release_territory()) {
641 cpl->set_release_territory (*film()->release_territory());
643 cpl->set_version_number (film()->version_number());
644 cpl->set_status (film()->status());
645 if (film()->chain()) {
646 cpl->set_chain (*film()->chain());
648 if (film()->distributor()) {
649 cpl->set_distributor (*film()->distributor());
651 if (film()->facility()) {
652 cpl->set_facility (*film()->facility());
654 if (film()->luminance()) {
655 cpl->set_luminance (*film()->luminance());
657 if (film()->sign_language_video_language()) {
658 cpl->set_sign_language_video_language (*film()->sign_language_video_language());
661 auto ac = film()->mapped_audio_channels();
662 dcp::MCASoundField field = (
663 find(ac.begin(), ac.end(), static_cast<int>(dcp::Channel::BSL)) != ac.end() ||
664 find(ac.begin(), ac.end(), static_cast<int>(dcp::Channel::BSR)) != ac.end()
665 ) ? dcp::MCASoundField::SEVEN_POINT_ONE : dcp::MCASoundField::FIVE_POINT_ONE;
667 dcp::MainSoundConfiguration msc (field, film()->audio_channels());
669 if (static_cast<int>(i) < film()->audio_channels()) {
670 msc.set_mapping (i, static_cast<dcp::Channel>(i));
674 cpl->set_main_sound_configuration (msc.to_string());
675 cpl->set_main_sound_sample_rate (film()->audio_frame_rate());
676 cpl->set_main_picture_stored_area (film()->frame_size());
678 auto active_area = film()->active_area();
679 if (active_area.width > 0 && active_area.height > 0) {
680 /* It's not allowed to have a zero active area width or height */
681 cpl->set_main_picture_active_area (active_area);
684 auto sl = film()->subtitle_languages().second;
686 cpl->set_additional_subtitle_languages(sl);
689 auto signer = Config::instance()->signer_chain();
690 /* We did check earlier, but check again here to be on the safe side */
692 if (!signer->valid (&reason)) {
693 throw InvalidSignerError (reason);
699 dcp::LocalTime().as_string(),
702 Config::instance()->dcp_metadata_filename_format()
706 N_("Wrote %1 FULL, %2 FAKE, %3 REPEAT, %4 pushed to disk"), _full_written, _fake_written, _repeat_written, _pushed_to_disk
709 write_cover_sheet (output_dcp);
714 Writer::write_cover_sheet (boost::filesystem::path output_dcp)
716 auto const cover = film()->file("COVER_SHEET.txt");
717 auto f = fopen_boost (cover, "w");
719 throw OpenFileError (cover, errno, OpenFileError::WRITE);
722 auto text = Config::instance()->cover_sheet ();
723 boost::algorithm::replace_all (text, "$CPL_NAME", film()->name());
724 boost::algorithm::replace_all (text, "$TYPE", film()->dcp_content_type()->pretty_name());
725 boost::algorithm::replace_all (text, "$CONTAINER", film()->container()->container_nickname());
727 auto audio_language = film()->audio_language();
728 if (audio_language) {
729 boost::algorithm::replace_all (text, "$AUDIO_LANGUAGE", audio_language->description());
731 boost::algorithm::replace_all (text, "$AUDIO_LANGUAGE", _("None"));
734 auto subtitle_languages = film()->subtitle_languages();
735 if (subtitle_languages.first) {
736 boost::algorithm::replace_all (text, "$SUBTITLE_LANGUAGE", subtitle_languages.first->description());
738 boost::algorithm::replace_all (text, "$SUBTITLE_LANGUAGE", _("None"));
741 boost::uintmax_t size = 0;
743 auto i = boost::filesystem::recursive_directory_iterator(output_dcp);
744 i != boost::filesystem::recursive_directory_iterator();
746 if (boost::filesystem::is_regular_file (i->path())) {
747 size += boost::filesystem::file_size (i->path());
751 if (size > (1000000000L)) {
752 boost::algorithm::replace_all (text, "$SIZE", String::compose("%1GB", dcp::locale_convert<string>(size / 1000000000.0, 1, true)));
754 boost::algorithm::replace_all (text, "$SIZE", String::compose("%1MB", dcp::locale_convert<string>(size / 1000000.0, 1, true)));
757 auto ch = audio_channel_types (film()->mapped_audio_channels(), film()->audio_channels());
758 auto description = String::compose("%1.%2", ch.first, ch.second);
760 if (description == "0.0") {
761 description = _("None");
762 } else if (description == "1.0") {
763 description = _("Mono");
764 } else if (description == "2.0") {
765 description = _("Stereo");
767 boost::algorithm::replace_all (text, "$AUDIO", description);
769 auto const hmsf = film()->length().split(film()->video_frame_rate());
771 if (hmsf.h == 0 && hmsf.m == 0) {
772 length = String::compose("%1s", hmsf.s);
773 } else if (hmsf.h == 0 && hmsf.m > 0) {
774 length = String::compose("%1m%2s", hmsf.m, hmsf.s);
775 } else if (hmsf.h > 0 && hmsf.m > 0) {
776 length = String::compose("%1h%2m%3s", hmsf.h, hmsf.m, hmsf.s);
779 boost::algorithm::replace_all (text, "$LENGTH", length);
781 checked_fwrite (text.c_str(), text.length(), f, cover);
786 /** @param frame Frame index within the whole DCP.
787 * @return true if we can fake-write this frame.
790 Writer::can_fake_write (Frame frame) const
792 if (film()->encrypted()) {
793 /* We need to re-write the frame because the asset ID is embedded in the HMAC... I think... */
797 /* We have to do a proper write of the first frame so that we can set up the JPEG2000
798 parameters in the asset writer.
801 auto const & reel = _reels[video_reel(frame)];
803 /* Make frame relative to the start of the reel */
804 frame -= reel.start ();
805 return (frame != 0 && frame < reel.first_nonexistant_frame());
809 /** @param track Closed caption track if type == TextType::CLOSED_CAPTION */
811 Writer::write (PlayerText text, TextType type, optional<DCPTextTrack> track, DCPTimePeriod period)
813 vector<ReelWriter>::iterator* reel = nullptr;
816 case TextType::OPEN_SUBTITLE:
817 reel = &_subtitle_reel;
818 _have_subtitles = true;
820 case TextType::CLOSED_CAPTION:
821 DCPOMATIC_ASSERT (track);
822 DCPOMATIC_ASSERT (_caption_reels.find(*track) != _caption_reels.end());
823 reel = &_caption_reels[*track];
824 _have_closed_captions.insert (*track);
827 DCPOMATIC_ASSERT (false);
830 DCPOMATIC_ASSERT (*reel != _reels.end());
831 while ((*reel)->period().to <= period.from) {
833 DCPOMATIC_ASSERT (*reel != _reels.end());
834 write_hanging_text (**reel);
837 auto back_off = [this](DCPTimePeriod period) {
838 period.to -= DCPTime::from_frames(2, film()->video_frame_rate());
842 if (period.to > (*reel)->period().to) {
843 /* This text goes off the end of the reel. Store parts of it that should go into
846 for (auto i = std::next(*reel); i != _reels.end(); ++i) {
847 auto overlap = i->period().overlap(period);
849 _hanging_texts.push_back (HangingText{text, type, track, back_off(*overlap)});
852 /* Back off from the reel boundary by a couple of frames to avoid tripping checks
853 * for subtitles being too close together.
855 period.to = (*reel)->period().to;
856 period = back_off(period);
859 (*reel)->write (text, type, track, period);
864 Writer::write (vector<FontData> fonts)
866 /* Just keep a list of unique fonts and we'll deal with them in ::finish */
868 for (auto const& i: fonts) {
870 for (auto& j: _fonts) {
877 _fonts.push_back (i);
884 operator< (QueueItem const & a, QueueItem const & b)
886 if (a.reel != b.reel) {
887 return a.reel < b.reel;
890 if (a.frame != b.frame) {
891 return a.frame < b.frame;
894 return static_cast<int> (a.eyes) < static_cast<int> (b.eyes);
899 operator== (QueueItem const & a, QueueItem const & b)
901 return a.reel == b.reel && a.frame == b.frame && a.eyes == b.eyes;
906 Writer::set_encoder_threads (int threads)
908 boost::mutex::scoped_lock lm (_state_mutex);
909 _maximum_frames_in_memory = lrint (threads * Config::instance()->frames_in_memory_multiplier());
910 _maximum_queue_size = threads * 16;
915 Writer::write (ReferencedReelAsset asset)
917 _reel_assets.push_back (asset);
922 Writer::video_reel (int frame) const
924 auto t = DCPTime::from_frames (frame, film()->video_frame_rate());
926 while (i < _reels.size() && !_reels[i].period().contains (t)) {
930 DCPOMATIC_ASSERT (i < _reels.size ());
936 Writer::set_digest_progress (Job* job, float progress)
938 boost::mutex::scoped_lock lm (_digest_progresses_mutex);
940 _digest_progresses[boost::this_thread::get_id()] = progress;
941 float min_progress = FLT_MAX;
942 for (auto const& i: _digest_progresses) {
943 min_progress = min (min_progress, i.second);
946 job->set_progress (min_progress);
951 boost::this_thread::interruption_point();
955 /** Calculate hashes for any referenced MXF assets which do not already have one */
957 Writer::calculate_referenced_digests (std::function<void (float)> set_progress)
960 for (auto const& i: _reel_assets) {
961 auto file = dynamic_pointer_cast<dcp::ReelFileAsset>(i.asset);
962 if (file && !file->hash()) {
963 file->asset_ref().asset()->hash (set_progress);
964 file->set_hash (file->asset_ref().asset()->hash());
967 } catch (boost::thread_interrupted) {
968 /* set_progress contains an interruption_point, so any of these methods
969 * may throw thread_interrupted, at which point we just give up.
975 Writer::write_hanging_text (ReelWriter& reel)
977 vector<HangingText> new_hanging_texts;
978 for (auto i: _hanging_texts) {
979 if (i.period.from == reel.period().from) {
980 reel.write (i.text, i.type, i.track, i.period);
982 new_hanging_texts.push_back (i);
985 _hanging_texts = new_hanging_texts;