2 Copyright (C) 2012-2015 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.
21 * @brief A representation of some audio and video content, and details of
22 * how they should be presented in a DCP.
28 #include "job_manager.h"
29 #include "transcode_job.h"
30 #include "scp_dcp_job.h"
32 #include "exceptions.h"
33 #include "examine_content_job.h"
37 #include "dcp_content_type.h"
41 #include "safe_stringstream.h"
42 #include "environment_info.h"
43 #include "raw_convert.h"
44 #include "audio_processor.h"
45 #include <libcxml/cxml.h>
47 #include <dcp/signer.h>
49 #include <dcp/local_time.h>
50 #include <dcp/decrypted_kdm.h>
51 #include <libxml++/libxml++.h>
52 #include <boost/filesystem.hpp>
53 #include <boost/algorithm/string.hpp>
54 #include <boost/lexical_cast.hpp>
55 #include <boost/foreach.hpp>
79 using boost::shared_ptr;
80 using boost::weak_ptr;
81 using boost::dynamic_pointer_cast;
82 using boost::to_upper_copy;
83 using boost::ends_with;
84 using boost::starts_with;
85 using boost::optional;
86 using boost::is_any_of;
90 #define LOG_GENERAL(...) log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
91 #define LOG_GENERAL_NC(...) log()->log (__VA_ARGS__, Log::TYPE_GENERAL);
94 * AudioMapping XML changed.
96 * Subtitle offset changed to subtitle y offset, and subtitle x offset added.
98 * Use <Scale> tag in <VideoContent> rather than <Ratio>.
102 * Subtitle X and Y scale.
104 * Bumped to 32 for 2.0 branch; some times are expressed in Times rather
107 int const Film::current_state_version = 32;
109 /** Construct a Film object in a given directory.
111 * @param dir Film directory.
114 Film::Film (boost::filesystem::path dir, bool log)
115 : _playlist (new Playlist)
116 , _use_isdcf_name (true)
117 , _dcp_content_type (Config::instance()->default_dcp_content_type ())
118 , _container (Config::instance()->default_container ())
119 , _resolution (RESOLUTION_2K)
122 , _j2k_bandwidth (Config::instance()->default_j2k_bandwidth ())
123 , _isdcf_metadata (Config::instance()->default_isdcf_metadata ())
124 , _video_frame_rate (24)
125 , _audio_channels (6)
127 , _sequence_video (true)
129 , _burn_subtitles (false)
130 , _audio_processor (0)
131 , _state_version (current_state_version)
134 set_isdcf_date_today ();
136 _playlist_changed_connection = _playlist->Changed.connect (bind (&Film::playlist_changed, this));
137 _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Film::playlist_content_changed, this, _1, _2));
139 /* Make state.directory a complete path without ..s (where possible)
140 (Code swiped from Adam Bowen on stackoverflow)
143 boost::filesystem::path p (boost::filesystem::system_complete (dir));
144 boost::filesystem::path result;
145 for (boost::filesystem::path::iterator i = p.begin(); i != p.end(); ++i) {
147 if (boost::filesystem::is_symlink (result) || result.filename() == "..") {
150 result = result.parent_path ();
152 } else if (*i != ".") {
157 set_directory (result.make_preferred ());
159 _log.reset (new FileLog (file ("log")));
161 _log.reset (new NullLog);
164 _playlist->set_sequence_video (_sequence_video);
169 for (list<boost::signals2::connection>::const_iterator i = _job_connections.begin(); i != _job_connections.end(); ++i) {
175 Film::video_identifier () const
177 DCPOMATIC_ASSERT (container ());
180 s.imbue (std::locale::classic ());
182 s << container()->id()
183 << "_" << resolution_to_string (_resolution)
184 << "_" << _playlist->video_identifier()
185 << "_" << _video_frame_rate
186 << "_" << j2k_bandwidth();
200 if (_burn_subtitles) {
211 /** @return The file to write video frame info to */
212 boost::filesystem::path
213 Film::info_file () const
215 boost::filesystem::path p;
217 p /= video_identifier ();
221 boost::filesystem::path
222 Film::internal_video_mxf_dir () const
224 return dir ("video");
227 boost::filesystem::path
228 Film::internal_video_mxf_filename () const
230 return video_identifier() + ".mxf";
234 Film::filename_safe_name () const
236 string const n = name ();
238 for (size_t i = 0; i < n.length(); ++i) {
239 if (isalnum (n[i])) {
249 boost::filesystem::path
250 Film::audio_analysis_dir () const
252 return dir ("analysis");
255 /** Add suitable Jobs to the JobManager to create a DCP for this Film */
259 set_isdcf_date_today ();
261 if (dcp_name().find ("/") != string::npos) {
262 throw BadSettingError (_("name"), _("cannot contain slashes"));
265 environment_info (log ());
267 ContentList cl = content ();
268 for (ContentList::const_iterator i = cl.begin(); i != cl.end(); ++i) {
269 LOG_GENERAL ("Content: %1", (*i)->technical_summary());
271 LOG_GENERAL ("DCP video rate %1 fps", video_frame_rate());
272 LOG_GENERAL ("%1 threads", Config::instance()->num_local_encoding_threads());
273 LOG_GENERAL ("J2K bandwidth %1", j2k_bandwidth());
275 if (container() == 0) {
276 throw MissingSettingError (_("container"));
279 if (content().empty()) {
280 throw StringError (_("You must add some content to the DCP before creating it"));
283 if (dcp_content_type() == 0) {
284 throw MissingSettingError (_("content type"));
287 if (name().empty()) {
288 throw MissingSettingError (_("name"));
291 JobManager::instance()->add (shared_ptr<Job> (new TranscodeJob (shared_from_this())));
294 /** Start a job to send our DCP to the configured TMS */
296 Film::send_dcp_to_tms ()
298 shared_ptr<Job> j (new SCPDCPJob (shared_from_this()));
299 JobManager::instance()->add (j);
302 shared_ptr<xmlpp::Document>
303 Film::metadata () const
305 shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
306 xmlpp::Element* root = doc->create_root_node ("Metadata");
308 root->add_child("Version")->add_child_text (raw_convert<string> (current_state_version));
309 root->add_child("Name")->add_child_text (_name);
310 root->add_child("UseISDCFName")->add_child_text (_use_isdcf_name ? "1" : "0");
312 if (_dcp_content_type) {
313 root->add_child("DCPContentType")->add_child_text (_dcp_content_type->isdcf_name ());
317 root->add_child("Container")->add_child_text (_container->id ());
320 root->add_child("Resolution")->add_child_text (resolution_to_string (_resolution));
321 root->add_child("J2KBandwidth")->add_child_text (raw_convert<string> (_j2k_bandwidth));
322 _isdcf_metadata.as_xml (root->add_child ("ISDCFMetadata"));
323 root->add_child("VideoFrameRate")->add_child_text (raw_convert<string> (_video_frame_rate));
324 root->add_child("ISDCFDate")->add_child_text (boost::gregorian::to_iso_string (_isdcf_date));
325 root->add_child("AudioChannels")->add_child_text (raw_convert<string> (_audio_channels));
326 root->add_child("ThreeD")->add_child_text (_three_d ? "1" : "0");
327 root->add_child("SequenceVideo")->add_child_text (_sequence_video ? "1" : "0");
328 root->add_child("Interop")->add_child_text (_interop ? "1" : "0");
329 root->add_child("BurnSubtitles")->add_child_text (_burn_subtitles ? "1" : "0");
330 root->add_child("Signed")->add_child_text (_signed ? "1" : "0");
331 root->add_child("Encrypted")->add_child_text (_encrypted ? "1" : "0");
332 root->add_child("Key")->add_child_text (_key.hex ());
333 if (_audio_processor) {
334 root->add_child("AudioProcessor")->add_child_text (_audio_processor->id ());
336 _playlist->as_xml (root->add_child ("Playlist"));
341 /** Write state to our `metadata' file */
343 Film::write_metadata () const
345 boost::filesystem::create_directories (directory ());
346 shared_ptr<xmlpp::Document> doc = metadata ();
347 doc->write_to_file_formatted (file("metadata.xml").string ());
351 /** Read state from our metadata file.
352 * @return Notes about things that the user should know about, or empty.
355 Film::read_metadata ()
357 if (boost::filesystem::exists (file ("metadata")) && !boost::filesystem::exists (file ("metadata.xml"))) {
358 throw StringError (_("This film was created with an older version of DCP-o-matic, and unfortunately it cannot be loaded into this version. You will need to create a new Film, re-add your content and set it up again. Sorry!"));
361 cxml::Document f ("Metadata");
362 f.read_file (file ("metadata.xml"));
364 _state_version = f.number_child<int> ("Version");
365 if (_state_version > current_state_version) {
366 throw StringError (_("This film was created with a newer version of DCP-o-matic, and it cannot be loaded into this version. Sorry!"));
369 _name = f.string_child ("Name");
370 if (_state_version >= 9) {
371 _use_isdcf_name = f.bool_child ("UseISDCFName");
372 _isdcf_metadata = ISDCFMetadata (f.node_child ("ISDCFMetadata"));
373 _isdcf_date = boost::gregorian::from_undelimited_string (f.string_child ("ISDCFDate"));
375 _use_isdcf_name = f.bool_child ("UseDCIName");
376 _isdcf_metadata = ISDCFMetadata (f.node_child ("DCIMetadata"));
377 _isdcf_date = boost::gregorian::from_undelimited_string (f.string_child ("DCIDate"));
381 optional<string> c = f.optional_string_child ("DCPContentType");
383 _dcp_content_type = DCPContentType::from_isdcf_name (c.get ());
388 optional<string> c = f.optional_string_child ("Container");
390 _container = Ratio::from_id (c.get ());
394 _resolution = string_to_resolution (f.string_child ("Resolution"));
395 _j2k_bandwidth = f.number_child<int> ("J2KBandwidth");
396 _video_frame_rate = f.number_child<int> ("VideoFrameRate");
397 _signed = f.optional_bool_child("Signed").get_value_or (true);
398 _encrypted = f.bool_child ("Encrypted");
399 _audio_channels = f.number_child<int> ("AudioChannels");
400 /* We used to allow odd numbers (and zero) channels, but it's just not worth
403 if (_audio_channels == 0) {
405 } else if ((_audio_channels % 2) == 1) {
408 _sequence_video = f.bool_child ("SequenceVideo");
409 _three_d = f.bool_child ("ThreeD");
410 _interop = f.bool_child ("Interop");
411 if (_state_version >= 32) {
412 _burn_subtitles = f.bool_child ("BurnSubtitles");
414 _key = dcp::Key (f.string_child ("Key"));
416 if (f.optional_string_child ("AudioProcessor")) {
417 _audio_processor = AudioProcessor::from_id (f.string_child ("AudioProcessor"));
419 _audio_processor = 0;
423 /* This method is the only one that can return notes (so far) */
424 _playlist->set_from_xml (shared_from_this(), f.node_child ("Playlist"), _state_version, notes);
426 /* Write backtraces to this film's directory, until another film is loaded */
427 set_backtrace_file (file ("backtrace.txt"));
433 /** Given a directory name, return its full path within the Film's directory.
434 * The directory (and its parents) will be created if they do not exist.
436 boost::filesystem::path
437 Film::dir (boost::filesystem::path d) const
439 boost::filesystem::path p;
443 boost::filesystem::create_directories (p);
448 /** Given a file or directory name, return its full path within the Film's directory.
449 * Any required parent directories will be created.
451 boost::filesystem::path
452 Film::file (boost::filesystem::path f) const
454 boost::filesystem::path p;
458 boost::filesystem::create_directories (p.parent_path ());
463 /** @return a ISDCF-compliant name for a DCP of this film */
465 Film::isdcf_name (bool if_created_now) const
469 string raw_name = name ();
471 /* Split the raw name up into words */
472 vector<string> words;
473 split (words, raw_name, is_any_of (" "));
477 /* Add each word to fixed_name */
478 for (vector<string>::const_iterator i = words.begin(); i != words.end(); ++i) {
481 /* First letter is always capitalised */
482 w[0] = toupper (w[0]);
484 /* Count caps in w */
486 for (size_t i = 0; i < w.size(); ++i) {
487 if (isupper (w[i])) {
492 /* If w is all caps make the rest of it lower case, otherwise
495 if (caps == w.size ()) {
496 for (size_t i = 1; i < w.size(); ++i) {
497 w[i] = tolower (w[i]);
501 for (size_t i = 0; i < w.size(); ++i) {
506 if (fixed_name.length() > 14) {
507 fixed_name = fixed_name.substr (0, 14);
512 if (dcp_content_type()) {
513 d << "_" << dcp_content_type()->isdcf_name();
514 d << "-" << isdcf_metadata().content_version;
517 ISDCFMetadata const dm = isdcf_metadata ();
519 if (dm.temp_version) {
523 if (dm.pre_release) {
531 if (!dm.chain.empty ()) {
532 d << "-" << dm.chain;
539 if (dm.two_d_version_of_three_d) {
543 if (!dm.mastered_luminance.empty ()) {
544 d << "-" << dm.mastered_luminance;
547 if (video_frame_rate() != 24) {
548 d << "-" << video_frame_rate();
552 d << "_" << container()->isdcf_name();
555 ContentList cl = content ();
557 /* XXX: this uses the first bit of content only */
559 /* The standard says we don't do this for trailers, for some strange reason */
560 if (dcp_content_type() && dcp_content_type()->libdcp_kind() != dcp::TRAILER) {
561 Ratio const * content_ratio = 0;
562 for (ContentList::iterator i = cl.begin(); i != cl.end(); ++i) {
563 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*i);
565 /* Here's the first piece of video content */
566 if (vc->scale().ratio ()) {
567 content_ratio = vc->scale().ratio ();
569 content_ratio = Ratio::from_ratio (vc->video_size().ratio ());
575 if (content_ratio && content_ratio != container()) {
576 d << "-" << content_ratio->isdcf_name();
580 if (!dm.audio_language.empty ()) {
581 d << "_" << dm.audio_language;
582 if (!dm.subtitle_language.empty()) {
583 d << "-" << dm.subtitle_language;
589 if (!dm.territory.empty ()) {
590 d << "_" << dm.territory;
591 if (!dm.rating.empty ()) {
592 d << "-" << dm.rating;
596 /* Find all mapped channels */
598 list<dcp::Channel> mapped;
599 for (ContentList::const_iterator i = cl.begin(); i != cl.end(); ++i) {
600 shared_ptr<const AudioContent> ac = dynamic_pointer_cast<const AudioContent> (*i);
602 list<dcp::Channel> c = ac->audio_mapping().mapped_dcp_channels ();
603 copy (c.begin(), c.end(), back_inserter (mapped));
614 for (list<dcp::Channel>::const_iterator i = mapped.begin(); i != mapped.end(); ++i) {
615 if (static_cast<int> (*i) >= audio_channels()) {
616 /* This channel is mapped but is not included in the DCP */
620 if ((*i) == dcp::LFE) {
628 d << "_" << non_lfe << lfe;
633 d << "_" << resolution_to_string (_resolution);
635 if (!dm.studio.empty ()) {
636 d << "_" << dm.studio;
639 if (if_created_now) {
640 d << "_" << boost::gregorian::to_iso_string (boost::gregorian::day_clock::local_day ());
642 d << "_" << boost::gregorian::to_iso_string (_isdcf_date);
645 if (!dm.facility.empty ()) {
646 d << "_" << dm.facility;
659 if (!dm.package_type.empty ()) {
660 d << "_" << dm.package_type;
666 /** @return name to give the DCP */
668 Film::dcp_name (bool if_created_now) const
671 if (use_isdcf_name()) {
672 unfiltered = isdcf_name (if_created_now);
674 unfiltered = name ();
677 /* Filter out `bad' characters which cause problems with some systems.
678 There's no apparent list of what really is allowed, so this is a guess.
682 string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_";
683 for (size_t i = 0; i < unfiltered.size(); ++i) {
684 if (allowed.find (unfiltered[i]) != string::npos) {
685 filtered += unfiltered[i];
693 Film::set_directory (boost::filesystem::path d)
700 Film::set_name (string n)
703 signal_changed (NAME);
707 Film::set_use_isdcf_name (bool u)
710 signal_changed (USE_ISDCF_NAME);
714 Film::set_dcp_content_type (DCPContentType const * t)
716 _dcp_content_type = t;
717 signal_changed (DCP_CONTENT_TYPE);
721 Film::set_container (Ratio const * c)
724 signal_changed (CONTAINER);
728 Film::set_resolution (Resolution r)
731 signal_changed (RESOLUTION);
735 Film::set_j2k_bandwidth (int b)
738 signal_changed (J2K_BANDWIDTH);
742 Film::set_isdcf_metadata (ISDCFMetadata m)
745 signal_changed (ISDCF_METADATA);
749 Film::set_video_frame_rate (int f)
751 _video_frame_rate = f;
752 signal_changed (VIDEO_FRAME_RATE);
756 Film::set_audio_channels (int c)
759 signal_changed (AUDIO_CHANNELS);
763 Film::set_three_d (bool t)
766 signal_changed (THREE_D);
770 Film::set_interop (bool i)
773 signal_changed (INTEROP);
777 Film::set_burn_subtitles (bool b)
780 signal_changed (BURN_SUBTITLES);
784 Film::set_audio_processor (AudioProcessor const * processor)
786 _audio_processor = processor;
787 signal_changed (AUDIO_PROCESSOR);
791 Film::signal_changed (Property p)
797 set_video_frame_rate (_playlist->best_dcp_frame_rate ());
799 case Film::VIDEO_FRAME_RATE:
800 case Film::SEQUENCE_VIDEO:
801 _playlist->maybe_sequence_video ();
807 emit (boost::bind (boost::ref (Changed), p));
811 Film::set_isdcf_date_today ()
813 _isdcf_date = boost::gregorian::day_clock::local_day ();
816 boost::filesystem::path
817 Film::j2c_path (int f, Eyes e, bool t) const
819 boost::filesystem::path p;
821 p /= video_identifier ();
825 s << setfill('0') << f;
827 if (e == EYES_LEFT) {
829 } else if (e == EYES_RIGHT) {
843 /** Find all the DCPs in our directory that can be dcp::DCP::read() and return details of their CPLs */
847 vector<CPLSummary> out;
849 boost::filesystem::path const dir = directory ();
850 for (boost::filesystem::directory_iterator i = boost::filesystem::directory_iterator(dir); i != boost::filesystem::directory_iterator(); ++i) {
852 boost::filesystem::is_directory (*i) &&
853 i->path().leaf() != "j2c" && i->path().leaf() != "video" && i->path().leaf() != "info" && i->path().leaf() != "analysis"
861 i->path().leaf().string(),
862 dcp.cpls().front()->id(),
863 dcp.cpls().front()->annotation_text(),
864 dcp.cpls().front()->file()
877 Film::make_player () const
879 return shared_ptr<Player> (new Player (shared_from_this (), _playlist));
883 Film::set_signed (bool s)
886 signal_changed (SIGNED);
890 Film::set_encrypted (bool e)
893 signal_changed (ENCRYPTED);
897 Film::set_key (dcp::Key key)
900 signal_changed (KEY);
904 Film::playlist () const
910 Film::content () const
912 return _playlist->content ();
916 Film::examine_content (shared_ptr<Content> c)
918 shared_ptr<Job> j (new ExamineContentJob (shared_from_this(), c));
919 JobManager::instance()->add (j);
923 Film::examine_and_add_content (shared_ptr<Content> c)
925 if (dynamic_pointer_cast<FFmpegContent> (c)) {
926 run_ffprobe (c->path(0), file ("ffprobe.log"), _log);
929 shared_ptr<Job> j (new ExamineContentJob (shared_from_this(), c));
931 _job_connections.push_back (
932 j->Finished.connect (bind (&Film::maybe_add_content, this, boost::weak_ptr<Job> (j), boost::weak_ptr<Content> (c)))
935 JobManager::instance()->add (j);
939 Film::maybe_add_content (weak_ptr<Job> j, weak_ptr<Content> c)
941 shared_ptr<Job> job = j.lock ();
942 if (!job || !job->finished_ok ()) {
946 shared_ptr<Content> content = c.lock ();
948 add_content (content);
953 Film::add_content (shared_ptr<Content> c)
955 /* Add video content after any existing content */
956 if (dynamic_pointer_cast<VideoContent> (c)) {
957 c->set_position (_playlist->video_end ());
964 Film::remove_content (shared_ptr<Content> c)
966 _playlist->remove (c);
970 Film::move_content_earlier (shared_ptr<Content> c)
972 _playlist->move_earlier (c);
976 Film::move_content_later (shared_ptr<Content> c)
978 _playlist->move_later (c);
982 Film::length () const
984 return _playlist->length ();
988 Film::best_video_frame_rate () const
990 return _playlist->best_dcp_frame_rate ();
994 Film::active_frame_rate_change (DCPTime t) const
996 return _playlist->active_frame_rate_change (t, video_frame_rate ());
1000 Film::playlist_content_changed (boost::weak_ptr<Content> c, int p)
1002 if (p == VideoContentProperty::VIDEO_FRAME_RATE) {
1003 set_video_frame_rate (_playlist->best_dcp_frame_rate ());
1004 } else if (p == AudioContentProperty::AUDIO_STREAMS) {
1005 signal_changed (NAME);
1008 emit (boost::bind (boost::ref (ContentChanged), c, p));
1012 Film::playlist_changed ()
1014 signal_changed (CONTENT);
1015 signal_changed (NAME);
1019 Film::audio_frame_rate () const
1026 Film::set_sequence_video (bool s)
1028 _sequence_video = s;
1029 _playlist->set_sequence_video (s);
1030 signal_changed (SEQUENCE_VIDEO);
1033 /** @return Size of the largest possible image in whatever resolution we are using */
1035 Film::full_frame () const
1037 switch (_resolution) {
1039 return dcp::Size (2048, 1080);
1041 return dcp::Size (4096, 2160);
1044 DCPOMATIC_ASSERT (false);
1045 return dcp::Size ();
1048 /** @return Size of the frame */
1050 Film::frame_size () const
1052 return fit_ratio_within (container()->ratio(), full_frame ());
1057 dcp::Certificate target,
1058 boost::filesystem::path cpl_file,
1059 dcp::LocalTime from,
1060 dcp::LocalTime until,
1061 dcp::Formulation formulation
1064 shared_ptr<const dcp::CPL> cpl (new dcp::CPL (cpl_file));
1065 shared_ptr<const dcp::Signer> signer = Config::instance()->signer();
1066 if (!signer->valid ()) {
1067 throw InvalidSignerError ();
1070 return dcp::DecryptedKDM (
1071 cpl, key(), from, until, "DCP-o-matic", cpl->content_title_text(), dcp::LocalTime().as_string()
1072 ).encrypt (signer, target, formulation);
1075 list<dcp::EncryptedKDM>
1077 list<shared_ptr<Screen> > screens,
1078 boost::filesystem::path dcp,
1079 dcp::LocalTime from,
1080 dcp::LocalTime until,
1081 dcp::Formulation formulation
1084 list<dcp::EncryptedKDM> kdms;
1086 for (list<shared_ptr<Screen> >::iterator i = screens.begin(); i != screens.end(); ++i) {
1087 if ((*i)->certificate) {
1088 kdms.push_back (make_kdm ((*i)->certificate.get(), dcp, from, until, formulation));
1095 /** @return The approximate disk space required to encode a DCP of this film with the
1096 * current settings, in bytes.
1099 Film::required_disk_space () const
1101 return uint64_t (j2k_bandwidth() / 8) * length().seconds();
1104 /** This method checks the disk that the Film is on and tries to decide whether or not
1105 * there will be enough space to make a DCP for it. If so, true is returned; if not,
1106 * false is returned and required and availabe are filled in with the amount of disk space
1107 * required and available respectively (in Gb).
1109 * Note: the decision made by this method isn't, of course, 100% reliable.
1112 Film::should_be_enough_disk_space (double& required, double& available, bool& can_hard_link) const
1114 /* Create a test file and see if we can hard-link it */
1115 boost::filesystem::path test = internal_video_mxf_dir() / "test";
1116 boost::filesystem::path test2 = internal_video_mxf_dir() / "test2";
1117 can_hard_link = true;
1118 FILE* f = fopen_boost (test, "w");
1121 boost::system::error_code ec;
1122 boost::filesystem::create_hard_link (test, test2, ec);
1124 can_hard_link = false;
1126 boost::filesystem::remove (test);
1127 boost::filesystem::remove (test2);
1130 boost::filesystem::space_info s = boost::filesystem::space (internal_video_mxf_dir ());
1131 required = double (required_disk_space ()) / 1073741824.0f;
1132 if (!can_hard_link) {
1135 available = double (s.available) / 1073741824.0f;
1136 return (available - required) > 1;
1140 Film::subtitle_language () const
1142 set<string> languages;
1144 ContentList cl = content ();
1145 BOOST_FOREACH (shared_ptr<Content>& c, cl) {
1146 shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (c);
1148 languages.insert (sc->subtitle_language ());
1153 BOOST_FOREACH (string s, languages) {
1154 if (!all.empty ()) {