src/lib/writer.cc

   1 /*
   2     Copyright (C) 2012-2017 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   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.
  10
  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.
  15
  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/>.
  18
  19 */
  20
  21 #include "writer.h"
  22 #include "compose.hpp"
  23 #include "film.h"
  24 #include "ratio.h"
  25 #include "log.h"
  26 #include "dcp_video.h"
  27 #include "dcp_content_type.h"
  28 #include "audio_mapping.h"
  29 #include "config.h"
  30 #include "job.h"
  31 #include "cross.h"
  32 #include "audio_buffers.h"
  33 #include "version.h"
  34 #include "font.h"
  35 #include "util.h"
  36 #include "reel_writer.h"
  37 #include <dcp/cpl.h>
  38 #include <dcp/locale_convert.h>
  39 #include <boost/foreach.hpp>
  40 #include <fstream>
  41 #include <cerrno>
  42 #include <iostream>
  43 #include <cfloat>
  44
  45 #include "i18n.h"
  46
  47 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
  48 #define LOG_GENERAL_NC(...) _film->log()->log (__VA_ARGS__, LogEntry::TYPE_GENERAL);
  49 #define LOG_DEBUG_ENCODE(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_DEBUG_ENCODE);
  50 #define LOG_TIMING(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_TIMING);
  51 #define LOG_WARNING_NC(...) _film->log()->log (__VA_ARGS__, LogEntry::TYPE_WARNING);
  52 #define LOG_WARNING(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_WARNING);
  53 #define LOG_ERROR(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_ERROR);
  54
  55 /* OS X strikes again */
  56 #undef set_key
  57
  58 using std::make_pair;
  59 using std::pair;
  60 using std::string;
  61 using std::list;
  62 using std::cout;
  63 using std::map;
  64 using std::min;
  65 using std::max;
  66 using boost::shared_ptr;
  67 using boost::weak_ptr;
  68 using boost::dynamic_pointer_cast;
  69 using dcp::Data;
  70
  71 Writer::Writer (shared_ptr<const Film> film, weak_ptr<Job> j)
  72         : _film (film)
  73         , _job (j)
  74         , _thread (0)
  75         , _finish (false)
  76         , _queued_full_in_memory (0)
  77         , _maximum_frames_in_memory (0)
  78         , _full_written (0)
  79         , _fake_written (0)
  80         , _repeat_written (0)
  81         , _pushed_to_disk (0)
  82 {
  83         shared_ptr<Job> job = _job.lock ();
  84         DCPOMATIC_ASSERT (job);
  85
  86         int reel_index = 0;
  87         list<DCPTimePeriod> const reels = _film->reels ();
  88         BOOST_FOREACH (DCPTimePeriod p, reels) {
  89                 _reels.push_back (ReelWriter (film, p, job, reel_index++, reels.size(), _film->content_summary(p)));
  90         }
  91
  92         /* We can keep track of the current audio and subtitle reels easily because audio
  93            and subs arrive to the Writer in sequence.  This is not so for video.
  94         */
  95         _audio_reel = _reels.begin ();
  96         _subtitle_reel = _reels.begin ();
  97
  98         /* Check that the signer is OK if we need one */
  99         string reason;
 100         if (_film->is_signed() && !Config::instance()->signer_chain()->valid(&reason)) {
 101                 throw InvalidSignerError (reason);
 102         }
 103 }
 104
 105 void
 106 Writer::start ()
 107 {
 108         _thread = new boost::thread (boost::bind (&Writer::thread, this));
 109 #ifdef DCPOMATIC_LINUX
 110         pthread_setname_np (_thread->native_handle(), "writer");
 111 #endif
 112 }
 113
 114 Writer::~Writer ()
 115 {
 116         terminate_thread (false);
 117 }
 118
 119 /** Pass a video frame to the writer for writing to disk at some point.
 120  *  This method can be called with frames out of order.
 121  *  @param encoded JPEG2000-encoded data.
 122  *  @param frame Frame index within the DCP.
 123  *  @param eyes Eyes that this frame image is for.
 124  */
 125 void
 126 Writer::write (Data encoded, Frame frame, Eyes eyes)
 127 {
 128         boost::mutex::scoped_lock lock (_state_mutex);
 129
 130         while (_queued_full_in_memory > _maximum_frames_in_memory) {
 131                 /* The queue is too big; wait until that is sorted out */
 132                 _full_condition.wait (lock);
 133         }
 134
 135         QueueItem qi;
 136         qi.type = QueueItem::FULL;
 137         qi.encoded = encoded;
 138         qi.reel = video_reel (frame);
 139         qi.frame = frame - _reels[qi.reel].start ();
 140
 141         if (_film->three_d() && eyes == EYES_BOTH) {
 142                 /* 2D material in a 3D DCP; fake the 3D */
 143                 qi.eyes = EYES_LEFT;
 144                 _queue.push_back (qi);
 145                 ++_queued_full_in_memory;
 146                 qi.eyes = EYES_RIGHT;
 147                 _queue.push_back (qi);
 148                 ++_queued_full_in_memory;
 149         } else {
 150                 qi.eyes = eyes;
 151                 _queue.push_back (qi);
 152                 ++_queued_full_in_memory;
 153         }
 154
 155         /* Now there's something to do: wake anything wait()ing on _empty_condition */
 156         _empty_condition.notify_all ();
 157 }
 158
 159 bool
 160 Writer::can_repeat (Frame frame) const
 161 {
 162         return frame > _reels[video_reel(frame)].start();
 163 }
 164
 165 /** Repeat the last frame that was written to a reel as a new frame.
 166  *  @param frame Frame index within the DCP of the new (repeated) frame.
 167  *  @param eyes Eyes that this repeated frame image is for.
 168  */
 169 void
 170 Writer::repeat (Frame frame, Eyes eyes)
 171 {
 172         boost::mutex::scoped_lock lock (_state_mutex);
 173
 174         while (_queued_full_in_memory > _maximum_frames_in_memory) {
 175                 /* The queue is too big; wait until that is sorted out */
 176                 _full_condition.wait (lock);
 177         }
 178
 179         QueueItem qi;
 180         qi.type = QueueItem::REPEAT;
 181         qi.reel = video_reel (frame);
 182         qi.frame = frame - _reels[qi.reel].start ();
 183         if (_film->three_d() && eyes == EYES_BOTH) {
 184                 qi.eyes = EYES_LEFT;
 185                 _queue.push_back (qi);
 186                 qi.eyes = EYES_RIGHT;
 187                 _queue.push_back (qi);
 188         } else {
 189                 qi.eyes = eyes;
 190                 _queue.push_back (qi);
 191         }
 192
 193         /* Now there's something to do: wake anything wait()ing on _empty_condition */
 194         _empty_condition.notify_all ();
 195 }
 196
 197 void
 198 Writer::fake_write (Frame frame, Eyes eyes)
 199 {
 200         boost::mutex::scoped_lock lock (_state_mutex);
 201
 202         while (_queued_full_in_memory > _maximum_frames_in_memory) {
 203                 /* The queue is too big; wait until that is sorted out */
 204                 _full_condition.wait (lock);
 205         }
 206
 207         size_t const reel = video_reel (frame);
 208         Frame const reel_frame = frame - _reels[reel].start ();
 209
 210         FILE* file = fopen_boost (_film->info_file(_reels[reel].period()), "rb");
 211         if (!file) {
 212                 throw ReadFileError (_film->info_file(_reels[reel].period()));
 213         }
 214         dcp::FrameInfo info = _reels[reel].read_frame_info (file, reel_frame, eyes);
 215         fclose (file);
 216
 217         QueueItem qi;
 218         qi.type = QueueItem::FAKE;
 219         qi.size = info.size;
 220         qi.reel = reel;
 221         qi.frame = reel_frame;
 222         if (_film->three_d() && eyes == EYES_BOTH) {
 223                 qi.eyes = EYES_LEFT;
 224                 _queue.push_back (qi);
 225                 qi.eyes = EYES_RIGHT;
 226                 _queue.push_back (qi);
 227         } else {
 228                 qi.eyes = eyes;
 229                 _queue.push_back (qi);
 230         }
 231
 232         /* Now there's something to do: wake anything wait()ing on _empty_condition */
 233         _empty_condition.notify_all ();
 234 }
 235
 236 /** Write some audio frames to the DCP.
 237  *  @param audio Audio data.
 238  *  @param time Time of this data within the DCP.
 239  *  This method is not thread safe.
 240  */
 241 void
 242 Writer::write (shared_ptr<const AudioBuffers> audio, DCPTime const time)
 243 {
 244         DCPOMATIC_ASSERT (audio);
 245
 246         int const afr = _film->audio_frame_rate();
 247
 248         DCPTime const end = time + DCPTime::from_frames(audio->frames(), afr);
 249
 250         /* The audio we get might span a reel boundary, and if so we have to write it in bits */
 251
 252         DCPTime t = time;
 253         while (t < end) {
 254
 255                 if (_audio_reel == _reels.end ()) {
 256                         /* This audio is off the end of the last reel; ignore it */
 257                         return;
 258                 }
 259
 260                 if (end <= _audio_reel->period().to) {
 261                         /* Easy case: we can write all the audio to this reel */
 262                         _audio_reel->write (audio);
 263                         t = end;
 264                 } else {
 265                         /* Split the audio into two and write the first part */
 266                         DCPTime part_lengths[2] = {
 267                                 _audio_reel->period().to - t,
 268                                 end - _audio_reel->period().to
 269                         };
 270
 271                         Frame part_frames[2] = {
 272                                 part_lengths[0].frames_ceil(afr),
 273                                 part_lengths[1].frames_ceil(afr)
 274                         };
 275
 276                         if (part_frames[0]) {
 277                                 shared_ptr<AudioBuffers> part (new AudioBuffers (audio->channels(), part_frames[0]));
 278                                 part->copy_from (audio.get(), part_frames[0], 0, 0);
 279                                 _audio_reel->write (part);
 280                         }
 281
 282                         if (part_frames[1]) {
 283                                 shared_ptr<AudioBuffers> part (new AudioBuffers (audio->channels(), part_frames[1]));
 284                                 part->copy_from (audio.get(), part_frames[1], part_frames[0], 0);
 285                                 audio = part;
 286                         } else {
 287                                 audio.reset ();
 288                         }
 289
 290                         ++_audio_reel;
 291                         t += part_lengths[0];
 292                 }
 293         }
 294 }
 295
 296 /** This must be called from Writer::thread() with an appropriate lock held */
 297 bool
 298 Writer::have_sequenced_image_at_queue_head ()
 299 {
 300         if (_queue.empty ()) {
 301                 return false;
 302         }
 303
 304         _queue.sort ();
 305
 306         QueueItem const & f = _queue.front();
 307         ReelWriter const & reel = _reels[f.reel];
 308
 309         /* The queue should contain only EYES_LEFT/EYES_RIGHT pairs or EYES_BOTH */
 310
 311         if (f.eyes == EYES_BOTH) {
 312                 /* 2D */
 313                 return f.frame == (reel.last_written_video_frame() + 1);
 314         }
 315
 316         /* 3D */
 317
 318         if (reel.last_written_eyes() == EYES_LEFT && f.frame == reel.last_written_video_frame() && f.eyes == EYES_RIGHT) {
 319                 return true;
 320         }
 321
 322         if (reel.last_written_eyes() == EYES_RIGHT && f.frame == (reel.last_written_video_frame() + 1) && f.eyes == EYES_LEFT) {
 323                 return true;
 324         }
 325
 326         return false;
 327 }
 328
 329 void
 330 Writer::thread ()
 331 try
 332 {
 333         while (true)
 334         {
 335                 boost::mutex::scoped_lock lock (_state_mutex);
 336
 337                 while (true) {
 338
 339                         if (_finish || _queued_full_in_memory > _maximum_frames_in_memory || have_sequenced_image_at_queue_head ()) {
 340                                 /* We've got something to do: go and do it */
 341                                 break;
 342                         }
 343
 344                         /* Nothing to do: wait until something happens which may indicate that we do */
 345                         LOG_TIMING (N_("writer-sleep queue=%1"), _queue.size());
 346                         _empty_condition.wait (lock);
 347                         LOG_TIMING (N_("writer-wake queue=%1"), _queue.size());
 348                 }
 349
 350                 if (_finish && _queue.empty()) {
 351                         return;
 352                 }
 353
 354                 /* We stop here if we have been asked to finish, and if either the queue
 355                    is empty or we do not have a sequenced image at its head (if this is the
 356                    case we will never terminate as no new frames will be sent once
 357                    _finish is true).
 358                 */
 359                 if (_finish && (!have_sequenced_image_at_queue_head() || _queue.empty())) {
 360                         /* (Hopefully temporarily) log anything that was not written */
 361                         if (!_queue.empty() && !have_sequenced_image_at_queue_head()) {
 362                                 LOG_WARNING (N_("Finishing writer with a left-over queue of %1:"), _queue.size());
 363                                 for (list<QueueItem>::const_iterator i = _queue.begin(); i != _queue.end(); ++i) {
 364                                         if (i->type == QueueItem::FULL) {
 365                                                 LOG_WARNING (N_("- type FULL, frame %1, eyes %2"), i->frame, (int) i->eyes);
 366                                         } else {
 367                                                 LOG_WARNING (N_("- type FAKE, size %1, frame %2, eyes %3"), i->size, i->frame, (int) i->eyes);
 368                                         }
 369                                 }
 370                         }
 371                         return;
 372                 }
 373
 374                 /* Write any frames that we can write; i.e. those that are in sequence. */
 375                 while (have_sequenced_image_at_queue_head ()) {
 376                         QueueItem qi = _queue.front ();
 377                         _queue.pop_front ();
 378                         if (qi.type == QueueItem::FULL && qi.encoded) {
 379                                 --_queued_full_in_memory;
 380                         }
 381
 382                         lock.unlock ();
 383
 384                         ReelWriter& reel = _reels[qi.reel];
 385
 386                         switch (qi.type) {
 387                         case QueueItem::FULL:
 388                                 LOG_DEBUG_ENCODE (N_("Writer FULL-writes %1 (%2)"), qi.frame, (int) qi.eyes);
 389                                 if (!qi.encoded) {
 390                                         qi.encoded = Data (_film->j2c_path (qi.reel, qi.frame, qi.eyes, false));
 391                                 }
 392                                 reel.write (qi.encoded, qi.frame, qi.eyes);
 393                                 ++_full_written;
 394                                 break;
 395                         case QueueItem::FAKE:
 396                                 LOG_DEBUG_ENCODE (N_("Writer FAKE-writes %1"), qi.frame);
 397                                 reel.fake_write (qi.frame, qi.eyes, qi.size);
 398                                 ++_fake_written;
 399                                 break;
 400                         case QueueItem::REPEAT:
 401                                 LOG_DEBUG_ENCODE (N_("Writer REPEAT-writes %1"), qi.frame);
 402                                 reel.repeat_write (qi.frame, qi.eyes);
 403                                 ++_repeat_written;
 404                                 break;
 405                         }
 406
 407                         lock.lock ();
 408                 }
 409
 410                 while (_queued_full_in_memory > _maximum_frames_in_memory) {
 411                         /* Too many frames in memory which can't yet be written to the stream.
 412                            Write some FULL frames to disk.
 413                         */
 414
 415                         /* Find one from the back of the queue */
 416                         _queue.sort ();
 417                         list<QueueItem>::reverse_iterator i = _queue.rbegin ();
 418                         while (i != _queue.rend() && (i->type != QueueItem::FULL || !i->encoded)) {
 419                                 ++i;
 420                         }
 421
 422                         DCPOMATIC_ASSERT (i != _queue.rend());
 423                         ++_pushed_to_disk;
 424                         /* For the log message below */
 425                         int const awaiting = _reels[_queue.front().reel].last_written_video_frame();
 426                         lock.unlock ();
 427
 428                         /* i is valid here, even though we don't hold a lock on the mutex,
 429                            since list iterators are unaffected by insertion and only this
 430                            thread could erase the last item in the list.
 431                         */
 432
 433                         LOG_GENERAL ("Writer full; pushes %1 to disk while awaiting %2", i->frame, awaiting);
 434
 435                         i->encoded->write_via_temp (
 436                                 _film->j2c_path (i->reel, i->frame, i->eyes, true),
 437                                 _film->j2c_path (i->reel, i->frame, i->eyes, false)
 438                                 );
 439
 440                         lock.lock ();
 441                         i->encoded.reset ();
 442                         --_queued_full_in_memory;
 443                 }
 444
 445                 /* The queue has probably just gone down a bit; notify anything wait()ing on _full_condition */
 446                 _full_condition.notify_all ();
 447         }
 448 }
 449 catch (...)
 450 {
 451         store_current ();
 452 }
 453
 454 void
 455 Writer::terminate_thread (bool can_throw)
 456 {
 457         boost::mutex::scoped_lock lock (_state_mutex);
 458         if (_thread == 0) {
 459                 return;
 460         }
 461
 462         _finish = true;
 463         _empty_condition.notify_all ();
 464         _full_condition.notify_all ();
 465         lock.unlock ();
 466
 467         if (_thread->joinable ()) {
 468                 _thread->join ();
 469         }
 470
 471         if (can_throw) {
 472                 rethrow ();
 473         }
 474
 475         delete _thread;
 476         _thread = 0;
 477 }
 478
 479 void
 480 Writer::finish ()
 481 {
 482         if (!_thread) {
 483                 return;
 484         }
 485
 486         LOG_GENERAL_NC ("Terminating writer thread");
 487
 488         terminate_thread (true);
 489
 490         LOG_GENERAL_NC ("Finishing ReelWriters");
 491
 492         BOOST_FOREACH (ReelWriter& i, _reels) {
 493                 i.finish ();
 494         }
 495
 496         LOG_GENERAL_NC ("Writing XML");
 497
 498         dcp::DCP dcp (_film->dir (_film->dcp_name()));
 499
 500         shared_ptr<dcp::CPL> cpl (
 501                 new dcp::CPL (
 502                         _film->dcp_name(),
 503                         _film->dcp_content_type()->libdcp_kind ()
 504                         )
 505                 );
 506
 507         dcp.add (cpl);
 508
 509         /* Calculate digests for each reel in parallel */
 510
 511         shared_ptr<Job> job = _job.lock ();
 512         job->sub (_("Computing digests"));
 513
 514         boost::asio::io_service service;
 515         boost::thread_group pool;
 516
 517         shared_ptr<boost::asio::io_service::work> work (new boost::asio::io_service::work (service));
 518
 519         int const threads = max (1, Config::instance()->master_encoding_threads ());
 520
 521         for (int i = 0; i < threads; ++i) {
 522                 pool.create_thread (boost::bind (&boost::asio::io_service::run, &service));
 523         }
 524
 525         BOOST_FOREACH (ReelWriter& i, _reels) {
 526                 boost::function<void (float)> set_progress = boost::bind (&Writer::set_digest_progress, this, job.get(), _1);
 527                 service.post (boost::bind (&ReelWriter::calculate_digests, &i, set_progress));
 528         }
 529
 530         work.reset ();
 531         pool.join_all ();
 532         service.stop ();
 533
 534         /* Add reels to CPL */
 535
 536         BOOST_FOREACH (ReelWriter& i, _reels) {
 537                 cpl->add (i.create_reel (_reel_assets, _fonts));
 538         }
 539
 540         dcp::XMLMetadata meta;
 541         meta.annotation_text = cpl->annotation_text ();
 542         meta.creator = Config::instance()->dcp_creator ();
 543         if (meta.creator.empty ()) {
 544                 meta.creator = String::compose ("DCP-o-matic %1 %2", dcpomatic_version, dcpomatic_git_commit);
 545         }
 546         meta.issuer = Config::instance()->dcp_issuer ();
 547         if (meta.issuer.empty ()) {
 548                 meta.issuer = String::compose ("DCP-o-matic %1 %2", dcpomatic_version, dcpomatic_git_commit);
 549         }
 550         meta.set_issue_date_now ();
 551
 552         cpl->set_metadata (meta);
 553
 554         shared_ptr<const dcp::CertificateChain> signer;
 555         if (_film->is_signed ()) {
 556                 signer = Config::instance()->signer_chain ();
 557                 /* We did check earlier, but check again here to be on the safe side */
 558                 string reason;
 559                 if (!signer->valid (&reason)) {
 560                         throw InvalidSignerError (reason);
 561                 }
 562         }
 563
 564         dcp.write_xml (_film->interop () ? dcp::INTEROP : dcp::SMPTE, meta, signer, Config::instance()->dcp_metadata_filename_format());
 565
 566         LOG_GENERAL (
 567                 N_("Wrote %1 FULL, %2 FAKE, %3 REPEAT, %4 pushed to disk"), _full_written, _fake_written, _repeat_written, _pushed_to_disk
 568                 );
 569
 570         write_cover_sheet ();
 571 }
 572
 573 void
 574 Writer::write_cover_sheet ()
 575 {
 576         boost::filesystem::path const cover = _film->file ("COVER_SHEET.txt");
 577         FILE* f = fopen_boost (cover, "w");
 578         if (!f) {
 579                 throw OpenFileError (cover, errno, false);
 580         }
 581
 582         string text = Config::instance()->cover_sheet ();
 583         boost::algorithm::replace_all (text, "$CPL_NAME", _film->name());
 584         boost::algorithm::replace_all (text, "$TYPE", _film->dcp_content_type()->pretty_name());
 585         boost::algorithm::replace_all (text, "$CONTAINER", _film->container()->container_nickname());
 586         boost::algorithm::replace_all (text, "$AUDIO_LANGUAGE", _film->isdcf_metadata().audio_language);
 587         boost::algorithm::replace_all (text, "$SUBTITLE_LANGUAGE", _film->isdcf_metadata().subtitle_language);
 588
 589         boost::uintmax_t size = 0;
 590         for (
 591                 boost::filesystem::recursive_directory_iterator i = boost::filesystem::recursive_directory_iterator(_film->dir(_film->dcp_name()));
 592                 i != boost::filesystem::recursive_directory_iterator();
 593                 ++i) {
 594                 if (boost::filesystem::is_regular_file (i->path ())) {
 595                         size += boost::filesystem::file_size (i->path ());
 596                 }
 597         }
 598
 599         if (size > (1000000000L)) {
 600                 boost::algorithm::replace_all (text, "$SIZE", String::compose ("%1GB", dcp::locale_convert<string> (size / 1000000000.0, 1, true)));
 601         } else {
 602                 boost::algorithm::replace_all (text, "$SIZE", String::compose ("%1MB", dcp::locale_convert<string> (size / 1000000.0, 1, true)));
 603         }
 604
 605         pair<int, int> ch = audio_channel_types (_film->mapped_audio_channels(), _film->audio_channels());
 606         string description = String::compose("%1.%2", ch.first, ch.second);
 607
 608         if (description == "0.0") {
 609                 description = _("None");
 610         } else if (description == "1.0") {
 611                 description = _("Mono");
 612         } else if (description == "2.0") {
 613                 description = _("Stereo");
 614         }
 615         boost::algorithm::replace_all (text, "$AUDIO", description);
 616
 617         int h, m, s, fr;
 618         _film->length().split (_film->video_frame_rate(), h, m, s, fr);
 619         string length;
 620         if (h == 0 && m == 0) {
 621                 length = String::compose("%1s", s);
 622         } else if (h == 0 && m > 0) {
 623                 length = String::compose("%1m%2s", m, s);
 624         } else if (h > 0 && m > 0) {
 625                 length = String::compose("%1h%2m%3s", h, m, s);
 626         }
 627
 628         boost::algorithm::replace_all (text, "$LENGTH", length);
 629
 630         fwrite (text.c_str(), 1, text.length(), f);
 631         fclose (f);
 632 }
 633
 634 /** @param frame Frame index within the whole DCP.
 635  *  @return true if we can fake-write this frame.
 636  */
 637 bool
 638 Writer::can_fake_write (Frame frame) const
 639 {
 640         /* We have to do a proper write of the first frame so that we can set up the JPEG2000
 641            parameters in the asset writer.
 642         */
 643
 644         ReelWriter const & reel = _reels[video_reel(frame)];
 645
 646         /* Make frame relative to the start of the reel */
 647         frame -= reel.start ();
 648         return (frame != 0 && frame < reel.first_nonexistant_frame());
 649 }
 650
 651 void
 652 Writer::write (PlayerSubtitles subs, DCPTimePeriod period)
 653 {
 654         if (subs.text.empty ()) {
 655                 return;
 656         }
 657
 658         if (_subtitle_reel->period().to <= period.from) {
 659                 ++_subtitle_reel;
 660         }
 661
 662         _subtitle_reel->write (subs);
 663 }
 664
 665 void
 666 Writer::write (list<shared_ptr<Font> > fonts)
 667 {
 668         /* Just keep a list of unique fonts and we'll deal with them in ::finish */
 669
 670         BOOST_FOREACH (shared_ptr<Font> i, fonts) {
 671                 bool got = false;
 672                 BOOST_FOREACH (shared_ptr<Font> j, _fonts) {
 673                         if (*i == *j) {
 674                                 got = true;
 675                         }
 676                 }
 677
 678                 if (!got) {
 679                         _fonts.push_back (i);
 680                 }
 681         }
 682 }
 683
 684 bool
 685 operator< (QueueItem const & a, QueueItem const & b)
 686 {
 687         if (a.reel != b.reel) {
 688                 return a.reel < b.reel;
 689         }
 690
 691         if (a.frame != b.frame) {
 692                 return a.frame < b.frame;
 693         }
 694
 695         return static_cast<int> (a.eyes) < static_cast<int> (b.eyes);
 696 }
 697
 698 bool
 699 operator== (QueueItem const & a, QueueItem const & b)
 700 {
 701         return a.reel == b.reel && a.frame == b.frame && a.eyes == b.eyes;
 702 }
 703
 704 void
 705 Writer::set_encoder_threads (int threads)
 706 {
 707         _maximum_frames_in_memory = lrint (threads * Config::instance()->frames_in_memory_multiplier());
 708 }
 709
 710 void
 711 Writer::write (ReferencedReelAsset asset)
 712 {
 713         _reel_assets.push_back (asset);
 714 }
 715
 716 size_t
 717 Writer::video_reel (int frame) const
 718 {
 719         DCPTime t = DCPTime::from_frames (frame, _film->video_frame_rate ());
 720         size_t i = 0;
 721         while (i < _reels.size() && !_reels[i].period().contains (t)) {
 722                 ++i;
 723         }
 724
 725         DCPOMATIC_ASSERT (i < _reels.size ());
 726         return i;
 727 }
 728
 729 void
 730 Writer::set_digest_progress (Job* job, float progress)
 731 {
 732         /* I believe this is thread-safe */
 733         _digest_progresses[boost::this_thread::get_id()] = progress;
 734
 735         boost::mutex::scoped_lock lm (_digest_progresses_mutex);
 736         float min_progress = FLT_MAX;
 737         for (map<boost::thread::id, float>::const_iterator i = _digest_progresses.begin(); i != _digest_progresses.end(); ++i) {
 738                 min_progress = min (min_progress, i->second);
 739         }
 740
 741         job->set_progress (min_progress);
 742 }