libs/ardour/export_handler.cc

   1 /*
   2     Copyright (C) 2008-2009 Paul Davis
   3     Author: Sakari Bergen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #include "ardour/export_handler.h"
  22
  23 #include <glib/gstdio.h>
  24 #include <glibmm.h>
  25 #include <glibmm/convert.h>
  26
  27 #include "pbd/convert.h"
  28
  29 #include "ardour/audiofile_tagger.h"
  30 #include "ardour/debug.h"
  31 #include "ardour/export_graph_builder.h"
  32 #include "ardour/export_timespan.h"
  33 #include "ardour/export_channel_configuration.h"
  34 #include "ardour/export_status.h"
  35 #include "ardour/export_format_specification.h"
  36 #include "ardour/export_filename.h"
  37 #include "ardour/soundcloud_upload.h"
  38 #include "ardour/system_exec.h"
  39 #include "pbd/openuri.h"
  40 #include "pbd/basename.h"
  41 #include "ardour/session_metadata.h"
  42
  43 #include "i18n.h"
  44
  45 using namespace std;
  46 using namespace PBD;
  47
  48 namespace ARDOUR
  49 {
  50
  51 /*** ExportElementFactory ***/
  52
  53 ExportElementFactory::ExportElementFactory (Session & session) :
  54   session (session)
  55 {
  56
  57 }
  58
  59 ExportElementFactory::~ExportElementFactory ()
  60 {
  61
  62 }
  63
  64 ExportTimespanPtr
  65 ExportElementFactory::add_timespan ()
  66 {
  67         return ExportTimespanPtr (new ExportTimespan (session.get_export_status(), session.frame_rate()));
  68 }
  69
  70 ExportChannelConfigPtr
  71 ExportElementFactory::add_channel_config ()
  72 {
  73         return ExportChannelConfigPtr (new ExportChannelConfiguration (session));
  74 }
  75
  76 ExportFormatSpecPtr
  77 ExportElementFactory::add_format ()
  78 {
  79         return ExportFormatSpecPtr (new ExportFormatSpecification (session));
  80 }
  81
  82 ExportFormatSpecPtr
  83 ExportElementFactory::add_format (XMLNode const & state)
  84 {
  85         return ExportFormatSpecPtr (new ExportFormatSpecification (session, state));
  86 }
  87
  88 ExportFormatSpecPtr
  89 ExportElementFactory::add_format_copy (ExportFormatSpecPtr other)
  90 {
  91         return ExportFormatSpecPtr (new ExportFormatSpecification (*other));
  92 }
  93
  94 ExportFilenamePtr
  95 ExportElementFactory::add_filename ()
  96 {
  97         return ExportFilenamePtr (new ExportFilename (session));
  98 }
  99
 100 ExportFilenamePtr
 101 ExportElementFactory::add_filename_copy (ExportFilenamePtr other)
 102 {
 103         return ExportFilenamePtr (new ExportFilename (*other));
 104 }
 105
 106 /*** ExportHandler ***/
 107
 108 ExportHandler::ExportHandler (Session & session)
 109   : ExportElementFactory (session)
 110   , session (session)
 111   , graph_builder (new ExportGraphBuilder (session))
 112   , export_status (session.get_export_status ())
 113   , normalizing (false)
 114   , cue_tracknum (0)
 115   , cue_indexnum (0)
 116 {
 117 }
 118
 119 ExportHandler::~ExportHandler ()
 120 {
 121         // TODO remove files that were written but not finished
 122 }
 123
 124 /** Add an export to the `to-do' list */
 125 bool
 126 ExportHandler::add_export_config (ExportTimespanPtr timespan, ExportChannelConfigPtr channel_config,
 127                                   ExportFormatSpecPtr format, ExportFilenamePtr filename,
 128                                   BroadcastInfoPtr broadcast_info)
 129 {
 130         FileSpec spec (channel_config, format, filename, broadcast_info);
 131         config_map.insert (make_pair (timespan, spec));
 132
 133         return true;
 134 }
 135
 136 void
 137 ExportHandler::do_export ()
 138 {
 139         /* Count timespans */
 140
 141         export_status->init();
 142         std::set<ExportTimespanPtr> timespan_set;
 143         for (ConfigMap::iterator it = config_map.begin(); it != config_map.end(); ++it) {
 144                 bool new_timespan = timespan_set.insert (it->first).second;
 145                 if (new_timespan) {
 146                         export_status->total_frames += it->first->get_length();
 147                 }
 148         }
 149         export_status->total_timespans = timespan_set.size();
 150
 151         /* Start export */
 152
 153         start_timespan ();
 154 }
 155
 156 void
 157 ExportHandler::start_timespan ()
 158 {
 159         export_status->timespan++;
 160
 161         if (config_map.empty()) {
 162                 // freewheeling has to be stopped from outside the process cycle
 163                 export_status->running = false;
 164                 return;
 165         }
 166
 167         /* finish_timespan pops the config_map entry that has been done, so
 168            this is the timespan to do this time
 169         */
 170         current_timespan = config_map.begin()->first;
 171
 172         export_status->total_frames_current_timespan = current_timespan->get_length();
 173         export_status->timespan_name = current_timespan->name();
 174         export_status->processed_frames_current_timespan = 0;
 175
 176         /* Register file configurations to graph builder */
 177
 178         /* Here's the config_map entries that use this timespan */
 179         timespan_bounds = config_map.equal_range (current_timespan);
 180         graph_builder->reset ();
 181         graph_builder->set_current_timespan (current_timespan);
 182         handle_duplicate_format_extensions();
 183         for (ConfigMap::iterator it = timespan_bounds.first; it != timespan_bounds.second; ++it) {
 184                 // Filenames can be shared across timespans
 185                 FileSpec & spec = it->second;
 186                 spec.filename->set_timespan (it->first);
 187                 graph_builder->add_config (spec);
 188         }
 189
 190         /* start export */
 191
 192         normalizing = false;
 193         session.ProcessExport.connect_same_thread (process_connection, boost::bind (&ExportHandler::process, this, _1));
 194         process_position = current_timespan->get_start();
 195         session.start_audio_export (process_position);
 196 }
 197
 198 void
 199 ExportHandler::handle_duplicate_format_extensions()
 200 {
 201         typedef std::map<std::string, int> ExtCountMap;
 202
 203         ExtCountMap counts;
 204         for (ConfigMap::iterator it = timespan_bounds.first; it != timespan_bounds.second; ++it) {
 205                 counts[it->second.format->extension()]++;
 206         }
 207
 208         bool duplicates_found = false;
 209         for (ExtCountMap::iterator it = counts.begin(); it != counts.end(); ++it) {
 210                 if (it->second > 1) { duplicates_found = true; }
 211         }
 212
 213         // Set this always, as the filenames are shared...
 214         for (ConfigMap::iterator it = timespan_bounds.first; it != timespan_bounds.second; ++it) {
 215                 it->second.filename->include_format_name = duplicates_found;
 216         }
 217 }
 218
 219 int
 220 ExportHandler::process (framecnt_t frames)
 221 {
 222         if (!export_status->running) {
 223                 return 0;
 224         } else if (normalizing) {
 225                 return process_normalize ();
 226         } else {
 227                 return process_timespan (frames);
 228         }
 229 }
 230
 231 int
 232 ExportHandler::process_timespan (framecnt_t frames)
 233 {
 234         /* update position */
 235
 236         framecnt_t frames_to_read = 0;
 237         framepos_t const end = current_timespan->get_end();
 238
 239         bool const last_cycle = (process_position + frames >= end);
 240
 241         if (last_cycle) {
 242                 frames_to_read = end - process_position;
 243                 export_status->stop = true;
 244         } else {
 245                 frames_to_read = frames;
 246         }
 247
 248         process_position += frames_to_read;
 249         export_status->processed_frames += frames_to_read;
 250         export_status->processed_frames_current_timespan += frames_to_read;
 251
 252         /* Do actual processing */
 253         int ret = graph_builder->process (frames_to_read, last_cycle);
 254
 255         /* Start normalizing if necessary */
 256         if (last_cycle) {
 257                 normalizing = graph_builder->will_normalize();
 258                 if (normalizing) {
 259                         export_status->total_normalize_cycles = graph_builder->get_normalize_cycle_count();
 260                         export_status->current_normalize_cycle = 0;
 261                 } else {
 262                         finish_timespan ();
 263                         return 0;
 264                 }
 265         }
 266
 267         return ret;
 268 }
 269
 270 int
 271 ExportHandler::process_normalize ()
 272 {
 273         if (graph_builder->process_normalize ()) {
 274                 finish_timespan ();
 275                 export_status->normalizing = false;
 276         } else {
 277                 export_status->normalizing = true;
 278         }
 279
 280         export_status->current_normalize_cycle++;
 281
 282         return 0;
 283 }
 284
 285 void
 286 ExportHandler::command_output(std::string output, size_t size)
 287 {
 288         std::cerr << "command: " << size << ", " << output << std::endl;
 289         info << output << endmsg;
 290 }
 291
 292 void
 293 ExportHandler::finish_timespan ()
 294 {
 295         while (config_map.begin() != timespan_bounds.second) {
 296
 297                 ExportFormatSpecPtr fmt = config_map.begin()->second.format;
 298                 std::string filename = config_map.begin()->second.filename->get_path(fmt);
 299
 300                 if (fmt->with_cue()) {
 301                         export_cd_marker_file (current_timespan, fmt, filename, CDMarkerCUE);
 302                 }
 303
 304                 if (fmt->with_toc()) {
 305                         export_cd_marker_file (current_timespan, fmt, filename, CDMarkerTOC);
 306                 }
 307
 308                 if (fmt->tag()) {
 309                         AudiofileTagger::tag_file(filename, *SessionMetadata::Metadata());
 310                 }
 311
 312                 if (!fmt->command().empty()) {
 313
 314 #if 0                   // would be nicer with C++11 initialiser...
 315                         std::map<char, std::string> subs {
 316                                 { 'f', filename },
 317                                 { 'd', Glib::path_get_dirname(filename)  + G_DIR_SEPARATOR },
 318                                 { 'b', PBD::basename_nosuffix(filename) },
 319                                 ...
 320                         };
 321 #endif
 322
 323                         PBD::ScopedConnection command_connection;
 324                         std::map<char, std::string> subs;
 325                         subs.insert (std::pair<char, std::string> ('f', filename));
 326                         subs.insert (std::pair<char, std::string> ('d', Glib::path_get_dirname (filename) + G_DIR_SEPARATOR));
 327                         subs.insert (std::pair<char, std::string> ('b', PBD::basename_nosuffix (filename)));
 328                         subs.insert (std::pair<char, std::string> ('s', session.path ()));
 329                         subs.insert (std::pair<char, std::string> ('n', session.name ()));
 330
 331                         ARDOUR::SystemExec *se = new ARDOUR::SystemExec(fmt->command(), subs);
 332                         se->ReadStdout.connect_same_thread(command_connection, boost::bind(&ExportHandler::command_output, this, _1, _2));
 333                         if (se->start (2) == 0) {
 334                                 // successfully started
 335                                 while (se->is_running ()) {
 336                                         // wait for system exec to terminate
 337                                         Glib::usleep (1000);
 338                                 }
 339                         } else {
 340                                 error << "post-export hook failed! " << fmt->command() << endmsg;
 341                         }
 342                         delete (se);
 343                 }
 344
 345                 if (fmt->soundcloud_upload()) {
 346                         SoundcloudUploader *soundcloud_uploader = new SoundcloudUploader;
 347                         std::string token = soundcloud_uploader->Get_Auth_Token(soundcloud_username, soundcloud_password);
 348                         DEBUG_TRACE (DEBUG::Soundcloud, string_compose(
 349                                                 "uploading %1 - username=%2, password=%3, token=%4",
 350                                                 filename, soundcloud_username, soundcloud_password, token) );
 351                         std::string path = soundcloud_uploader->Upload (
 352                                         filename,
 353                                         PBD::basename_nosuffix(filename), // title
 354                                         token,
 355                                         soundcloud_make_public,
 356                                         soundcloud_downloadable,
 357                                         this);
 358
 359                         if (path.length() != 0) {
 360                                 info << string_compose ( _("File %1 uploaded to %2"), filename, path) << endmsg;
 361                                 if (soundcloud_open_page) {
 362                                         DEBUG_TRACE (DEBUG::Soundcloud, string_compose ("opening %1", path) );
 363                                         open_uri(path.c_str());  // open the soundcloud website to the new file
 364                                 }
 365                         } else {
 366                                 error << _("upload to Soundcloud failed.  Perhaps your email or password are incorrect?\n") << endmsg;
 367                         }
 368                         delete soundcloud_uploader;
 369                 }
 370                 config_map.erase (config_map.begin());
 371         }
 372
 373         start_timespan ();
 374 }
 375
 376 /*** CD Marker stuff ***/
 377
 378 struct LocationSortByStart {
 379     bool operator() (Location *a, Location *b) {
 380             return a->start() < b->start();
 381     }
 382 };
 383
 384 void
 385 ExportHandler::export_cd_marker_file (ExportTimespanPtr timespan, ExportFormatSpecPtr file_format,
 386                                       std::string filename, CDMarkerFormat format)
 387 {
 388         string filepath = get_cd_marker_filename(filename, format);
 389
 390         try {
 391                 void (ExportHandler::*header_func) (CDMarkerStatus &);
 392                 void (ExportHandler::*track_func) (CDMarkerStatus &);
 393                 void (ExportHandler::*index_func) (CDMarkerStatus &);
 394
 395                 switch (format) {
 396                 case CDMarkerTOC:
 397                         header_func = &ExportHandler::write_toc_header;
 398                         track_func = &ExportHandler::write_track_info_toc;
 399                         index_func = &ExportHandler::write_index_info_toc;
 400                         break;
 401                 case CDMarkerCUE:
 402                         header_func = &ExportHandler::write_cue_header;
 403                         track_func = &ExportHandler::write_track_info_cue;
 404                         index_func = &ExportHandler::write_index_info_cue;
 405                         break;
 406                 default:
 407                         return;
 408                 }
 409
 410                 CDMarkerStatus status (filepath, timespan, file_format, filename);
 411
 412                 if (!status.out) {
 413                         error << string_compose(_("Editor: cannot open \"%1\" as export file for CD marker file"), filepath) << endmsg;
 414                         return;
 415                 }
 416
 417                 (this->*header_func) (status);
 418
 419                 /* Get locations and sort */
 420
 421                 Locations::LocationList const & locations (session.locations()->list());
 422                 Locations::LocationList::const_iterator i;
 423                 Locations::LocationList temp;
 424
 425                 for (i = locations.begin(); i != locations.end(); ++i) {
 426                         if ((*i)->start() >= timespan->get_start() && (*i)->end() <= timespan->get_end() && (*i)->is_cd_marker() && !(*i)->is_session_range()) {
 427                                 temp.push_back (*i);
 428                         }
 429                 }
 430
 431                 if (temp.empty()) {
 432                         // TODO One index marker for whole thing
 433                         return;
 434                 }
 435
 436                 LocationSortByStart cmp;
 437                 temp.sort (cmp);
 438                 Locations::LocationList::const_iterator nexti;
 439
 440                 /* Start actual marker stuff */
 441
 442                 framepos_t last_end_time = timespan->get_start(), last_start_time = timespan->get_start();
 443                 status.track_position = last_start_time - timespan->get_start();
 444
 445                 for (i = temp.begin(); i != temp.end(); ++i) {
 446
 447                         status.marker = *i;
 448
 449                         if ((*i)->start() < last_end_time) {
 450                                 if ((*i)->is_mark()) {
 451                                         /* Index within track */
 452
 453                                         status.index_position = (*i)->start() - timespan->get_start();
 454                                         (this->*index_func) (status);
 455                                 }
 456
 457                                 continue;
 458                         }
 459
 460                         /* A track, defined by a cd range marker or a cd location marker outside of a cd range */
 461
 462                         status.track_position = last_end_time - timespan->get_start();
 463                         status.track_start_frame = (*i)->start() - timespan->get_start();  // everything before this is the pregap
 464                         status.track_duration = 0;
 465
 466                         if ((*i)->is_mark()) {
 467                                 // a mark track location needs to look ahead to the next marker's start to determine length
 468                                 nexti = i;
 469                                 ++nexti;
 470
 471                                 if (nexti != temp.end()) {
 472                                         status.track_duration = (*nexti)->start() - last_end_time;
 473
 474                                         last_start_time = (*i)->start();
 475                                         last_end_time = (*nexti)->start();
 476                                 } else {
 477                                         // this was the last marker, use timespan end
 478                                         status.track_duration = timespan->get_end() - last_end_time;
 479
 480                                         last_start_time = (*i)->start();
 481                                         last_end_time = timespan->get_end();
 482                                 }
 483                         } else {
 484                                 // range
 485                                 status.track_duration = (*i)->end() - last_end_time;
 486
 487                                 last_start_time = (*i)->start();
 488                                 last_end_time = (*i)->end();
 489                         }
 490
 491                         (this->*track_func) (status);
 492                 }
 493
 494         } catch (std::exception& e) {
 495                 error << string_compose (_("an error occured while writing a TOC/CUE file: %1"), e.what()) << endmsg;
 496                 ::g_unlink (filepath.c_str());
 497         } catch (Glib::Exception& e) {
 498                 error << string_compose (_("an error occured while writing a TOC/CUE file: %1"), e.what()) << endmsg;
 499                 ::g_unlink (filepath.c_str());
 500         }
 501 }
 502
 503 string
 504 ExportHandler::get_cd_marker_filename(std::string filename, CDMarkerFormat format)
 505 {
 506         /* do not strip file suffix because there may be more than one format,
 507            and we do not want the CD marker file from one format to overwrite
 508            another (e.g. foo.wav.cue > foo.aiff.cue)
 509         */
 510
 511         switch (format) {
 512           case CDMarkerTOC:
 513                 return filename + ".toc";
 514           case CDMarkerCUE:
 515                 return filename + ".cue";
 516           default:
 517                 return filename + ".marker"; // Should not be reached when actually creating a file
 518         }
 519 }
 520
 521 void
 522 ExportHandler::write_cue_header (CDMarkerStatus & status)
 523 {
 524         string title = status.timespan->name().compare ("Session") ? status.timespan->name() : (string) session.name();
 525
 526         status.out << "REM Cue file generated by " << PROGRAM_NAME << endl;
 527         status.out << "TITLE " << cue_escape_cdtext (title) << endl;
 528
 529         /*  The original cue sheet sepc metions five file types
 530                 WAVE, AIFF,
 531                 BINARY   = "header-less" audio (44.1 kHz, 16 Bit, little endian),
 532                 MOTOROLA = "header-less" audio (44.1 kHz, 16 Bit, big endian),
 533                 and MP3
 534
 535                 We try to use these file types whenever appropriate and
 536                 default to our own names otherwise.
 537         */
 538         status.out << "FILE \"" << Glib::path_get_basename(status.filename) << "\" ";
 539         if (!status.format->format_name().compare ("WAV")  || !status.format->format_name().compare ("BWF")) {
 540                 status.out  << "WAVE";
 541         } else if (status.format->format_id() == ExportFormatBase::F_RAW &&
 542                    status.format->sample_format() == ExportFormatBase::SF_16 &&
 543                    status.format->sample_rate() == ExportFormatBase::SR_44_1) {
 544                 // Format is RAW 16bit 44.1kHz
 545                 if (status.format->endianness() == ExportFormatBase::E_Little) {
 546                         status.out << "BINARY";
 547                 } else {
 548                         status.out << "MOTOROLA";
 549                 }
 550         } else {
 551                 // no special case for AIFF format it's name is already "AIFF"
 552                 status.out << status.format->format_name();
 553         }
 554         status.out << endl;
 555 }
 556
 557 void
 558 ExportHandler::write_toc_header (CDMarkerStatus & status)
 559 {
 560         string title = status.timespan->name().compare ("Session") ? status.timespan->name() : (string) session.name();
 561
 562         status.out << "CD_DA" << endl;
 563         status.out << "CD_TEXT {" << endl << "  LANGUAGE_MAP {" << endl << "    0 : EN" << endl << "  }" << endl;
 564         status.out << "  LANGUAGE 0 {" << endl << "    TITLE " << toc_escape_cdtext (title) << endl ;
 565         status.out << "    PERFORMER \"\"" << endl << "  }" << endl << "}" << endl;
 566 }
 567
 568 void
 569 ExportHandler::write_track_info_cue (CDMarkerStatus & status)
 570 {
 571         gchar buf[18];
 572
 573         snprintf (buf, sizeof(buf), "  TRACK %02d AUDIO", status.track_number);
 574         status.out << buf << endl;
 575
 576         status.out << "    FLAGS" ;
 577         if (status.marker->cd_info.find("scms") != status.marker->cd_info.end())  {
 578                 status.out << " SCMS ";
 579         } else {
 580                 status.out << " DCP ";
 581         }
 582
 583         if (status.marker->cd_info.find("preemph") != status.marker->cd_info.end())  {
 584                 status.out << " PRE";
 585         }
 586         status.out << endl;
 587
 588         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end())  {
 589                 status.out << "    ISRC " << status.marker->cd_info["isrc"] << endl;
 590         }
 591
 592         if (status.marker->name() != "") {
 593                 status.out << "    TITLE " << cue_escape_cdtext (status.marker->name()) << endl;
 594         }
 595
 596         if (status.marker->cd_info.find("performer") != status.marker->cd_info.end()) {
 597                 status.out <<  "    PERFORMER " << cue_escape_cdtext (status.marker->cd_info["performer"]) << endl;
 598         }
 599
 600         if (status.marker->cd_info.find("composer") != status.marker->cd_info.end()) {
 601                 status.out << "    SONGWRITER " << cue_escape_cdtext (status.marker->cd_info["composer"]) << endl;
 602         }
 603
 604         if (status.track_position != status.track_start_frame) {
 605                 frames_to_cd_frames_string (buf, status.track_position);
 606                 status.out << "    INDEX 00" << buf << endl;
 607         }
 608
 609         frames_to_cd_frames_string (buf, status.track_start_frame);
 610         status.out << "    INDEX 01" << buf << endl;
 611
 612         status.index_number = 2;
 613         status.track_number++;
 614 }
 615
 616 void
 617 ExportHandler::write_track_info_toc (CDMarkerStatus & status)
 618 {
 619         gchar buf[18];
 620
 621         status.out << endl << "TRACK AUDIO" << endl;
 622
 623         if (status.marker->cd_info.find("scms") != status.marker->cd_info.end())  {
 624                 status.out << "NO ";
 625         }
 626         status.out << "COPY" << endl;
 627
 628         if (status.marker->cd_info.find("preemph") != status.marker->cd_info.end())  {
 629                 status.out << "PRE_EMPHASIS" << endl;
 630         } else {
 631                 status.out << "NO PRE_EMPHASIS" << endl;
 632         }
 633
 634         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end())  {
 635                 status.out << "ISRC \"" << status.marker->cd_info["isrc"] << "\"" << endl;
 636         }
 637
 638         status.out << "CD_TEXT {" << endl << "  LANGUAGE 0 {" << endl;
 639         status.out << "     TITLE " << toc_escape_cdtext (status.marker->name()) << endl;
 640
 641         status.out << "     PERFORMER ";
 642         if (status.marker->cd_info.find("performer") != status.marker->cd_info.end()) {
 643                 status.out << toc_escape_cdtext (status.marker->cd_info["performer"]) << endl;
 644         } else {
 645                 status.out << "\"\"" << endl;
 646         }
 647
 648         if (status.marker->cd_info.find("composer") != status.marker->cd_info.end()) {
 649                 status.out  << "     SONGWRITER " << toc_escape_cdtext (status.marker->cd_info["composer"]) << endl;
 650         }
 651
 652         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end()) {
 653                 status.out  << "     ISRC \"";
 654                 status.out << status.marker->cd_info["isrc"].substr(0,2) << "-";
 655                 status.out << status.marker->cd_info["isrc"].substr(2,3) << "-";
 656                 status.out << status.marker->cd_info["isrc"].substr(5,2) << "-";
 657                 status.out << status.marker->cd_info["isrc"].substr(7,5) << "\"" << endl;
 658         }
 659
 660         status.out << "  }" << endl << "}" << endl;
 661
 662         frames_to_cd_frames_string (buf, status.track_position);
 663         status.out << "FILE " << toc_escape_filename (status.filename) << ' ' << buf;
 664
 665         frames_to_cd_frames_string (buf, status.track_duration);
 666         status.out << buf << endl;
 667
 668         frames_to_cd_frames_string (buf, status.track_start_frame - status.track_position);
 669         status.out << "START" << buf << endl;
 670 }
 671
 672 void
 673 ExportHandler::write_index_info_cue (CDMarkerStatus & status)
 674 {
 675         gchar buf[18];
 676
 677         snprintf (buf, sizeof(buf), "    INDEX %02d", cue_indexnum);
 678         status.out << buf;
 679         frames_to_cd_frames_string (buf, status.index_position);
 680         status.out << buf << endl;
 681
 682         cue_indexnum++;
 683 }
 684
 685 void
 686 ExportHandler::write_index_info_toc (CDMarkerStatus & status)
 687 {
 688         gchar buf[18];
 689
 690         frames_to_cd_frames_string (buf, status.index_position - status.track_position);
 691         status.out << "INDEX" << buf << endl;
 692 }
 693
 694 void
 695 ExportHandler::frames_to_cd_frames_string (char* buf, framepos_t when)
 696 {
 697         framecnt_t remainder;
 698         framecnt_t fr = session.nominal_frame_rate();
 699         int mins, secs, frames;
 700
 701         mins = when / (60 * fr);
 702         remainder = when - (mins * 60 * fr);
 703         secs = remainder / fr;
 704         remainder -= secs * fr;
 705         frames = remainder / (fr / 75);
 706         sprintf (buf, " %02d:%02d:%02d", mins, secs, frames);
 707 }
 708
 709 std::string
 710 ExportHandler::toc_escape_cdtext (const std::string& txt)
 711 {
 712         Glib::ustring check (txt);
 713         std::string out;
 714         std::string latin1_txt;
 715         char buf[5];
 716
 717         try {
 718                 latin1_txt = Glib::convert (txt, "ISO-8859-1", "UTF-8");
 719         } catch (Glib::ConvertError& err) {
 720                 throw Glib::ConvertError (err.code(), string_compose (_("Cannot convert %1 to Latin-1 text"), txt));
 721         }
 722
 723         out = '"';
 724
 725         for (std::string::const_iterator c = latin1_txt.begin(); c != latin1_txt.end(); ++c) {
 726
 727                 if ((*c) == '"') {
 728                         out += "\\\"";
 729                 } else if ((*c) == '\\') {
 730                         out += "\\134";
 731                 } else if (isprint (*c)) {
 732                         out += *c;
 733                 } else {
 734                         snprintf (buf, sizeof (buf), "\\%03o", (int) (unsigned char) *c);
 735                         out += buf;
 736                 }
 737         }
 738
 739         out += '"';
 740
 741         return out;
 742 }
 743
 744 std::string
 745 ExportHandler::toc_escape_filename (const std::string& txt)
 746 {
 747         std::string out;
 748
 749         out = '"';
 750
 751         // We iterate byte-wise not character-wise over a UTF-8 string here,
 752         // because we only want to translate backslashes and double quotes
 753         for (std::string::const_iterator c = txt.begin(); c != txt.end(); ++c) {
 754
 755                 if (*c == '"') {
 756                         out += "\\\"";
 757                 } else if (*c == '\\') {
 758                         out += "\\134";
 759                 } else {
 760                         out += *c;
 761                 }
 762         }
 763
 764         out += '"';
 765
 766         return out;
 767 }
 768
 769 std::string
 770 ExportHandler::cue_escape_cdtext (const std::string& txt)
 771 {
 772         std::string latin1_txt;
 773         std::string out;
 774
 775         try {
 776                 latin1_txt = Glib::convert (txt, "ISO-8859-1", "UTF-8");
 777         } catch (Glib::ConvertError& err) {
 778                 throw Glib::ConvertError (err.code(), string_compose (_("Cannot convert %1 to Latin-1 text"), txt));
 779         }
 780
 781         // does not do much mor than UTF-8 to Latin1 translation yet, but
 782         // that may have to change if cue parsers in burning programs change
 783         out = '"' + latin1_txt + '"';
 784
 785         return out;
 786 }
 787
 788 } // namespace ARDOUR