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();
 443                 status.track_position = 0;
 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_end_time = (*nexti)->start();
 475                                 } else {
 476                                         // this was the last marker, use timespan end
 477                                         status.track_duration = timespan->get_end() - last_end_time;
 478
 479                                         last_end_time = timespan->get_end();
 480                                 }
 481                         } else {
 482                                 // range
 483                                 status.track_duration = (*i)->end() - last_end_time;
 484
 485                                 last_end_time = (*i)->end();
 486                         }
 487
 488                         (this->*track_func) (status);
 489                 }
 490
 491         } catch (std::exception& e) {
 492                 error << string_compose (_("an error occured while writing a TOC/CUE file: %1"), e.what()) << endmsg;
 493                 ::g_unlink (filepath.c_str());
 494         } catch (Glib::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         }
 498 }
 499
 500 string
 501 ExportHandler::get_cd_marker_filename(std::string filename, CDMarkerFormat format)
 502 {
 503         /* do not strip file suffix because there may be more than one format,
 504            and we do not want the CD marker file from one format to overwrite
 505            another (e.g. foo.wav.cue > foo.aiff.cue)
 506         */
 507
 508         switch (format) {
 509           case CDMarkerTOC:
 510                 return filename + ".toc";
 511           case CDMarkerCUE:
 512                 return filename + ".cue";
 513           default:
 514                 return filename + ".marker"; // Should not be reached when actually creating a file
 515         }
 516 }
 517
 518 void
 519 ExportHandler::write_cue_header (CDMarkerStatus & status)
 520 {
 521         string title = status.timespan->name().compare ("Session") ? status.timespan->name() : (string) session.name();
 522
 523         status.out << "REM Cue file generated by " << PROGRAM_NAME << endl;
 524         status.out << "TITLE " << cue_escape_cdtext (title) << endl;
 525
 526         /*  The original cue sheet sepc metions five file types
 527                 WAVE, AIFF,
 528                 BINARY   = "header-less" audio (44.1 kHz, 16 Bit, little endian),
 529                 MOTOROLA = "header-less" audio (44.1 kHz, 16 Bit, big endian),
 530                 and MP3
 531
 532                 We try to use these file types whenever appropriate and
 533                 default to our own names otherwise.
 534         */
 535         status.out << "FILE \"" << Glib::path_get_basename(status.filename) << "\" ";
 536         if (!status.format->format_name().compare ("WAV")  || !status.format->format_name().compare ("BWF")) {
 537                 status.out  << "WAVE";
 538         } else if (status.format->format_id() == ExportFormatBase::F_RAW &&
 539                    status.format->sample_format() == ExportFormatBase::SF_16 &&
 540                    status.format->sample_rate() == ExportFormatBase::SR_44_1) {
 541                 // Format is RAW 16bit 44.1kHz
 542                 if (status.format->endianness() == ExportFormatBase::E_Little) {
 543                         status.out << "BINARY";
 544                 } else {
 545                         status.out << "MOTOROLA";
 546                 }
 547         } else {
 548                 // no special case for AIFF format it's name is already "AIFF"
 549                 status.out << status.format->format_name();
 550         }
 551         status.out << endl;
 552 }
 553
 554 void
 555 ExportHandler::write_toc_header (CDMarkerStatus & status)
 556 {
 557         string title = status.timespan->name().compare ("Session") ? status.timespan->name() : (string) session.name();
 558
 559         status.out << "CD_DA" << endl;
 560         status.out << "CD_TEXT {" << endl << "  LANGUAGE_MAP {" << endl << "    0 : EN" << endl << "  }" << endl;
 561         status.out << "  LANGUAGE 0 {" << endl << "    TITLE " << toc_escape_cdtext (title) << endl ;
 562         status.out << "    PERFORMER \"\"" << endl << "  }" << endl << "}" << endl;
 563 }
 564
 565 void
 566 ExportHandler::write_track_info_cue (CDMarkerStatus & status)
 567 {
 568         gchar buf[18];
 569
 570         snprintf (buf, sizeof(buf), "  TRACK %02d AUDIO", status.track_number);
 571         status.out << buf << endl;
 572
 573         status.out << "    FLAGS" ;
 574         if (status.marker->cd_info.find("scms") != status.marker->cd_info.end())  {
 575                 status.out << " SCMS ";
 576         } else {
 577                 status.out << " DCP ";
 578         }
 579
 580         if (status.marker->cd_info.find("preemph") != status.marker->cd_info.end())  {
 581                 status.out << " PRE";
 582         }
 583         status.out << endl;
 584
 585         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end())  {
 586                 status.out << "    ISRC " << status.marker->cd_info["isrc"] << endl;
 587         }
 588
 589         if (status.marker->name() != "") {
 590                 status.out << "    TITLE " << cue_escape_cdtext (status.marker->name()) << endl;
 591         }
 592
 593         if (status.marker->cd_info.find("performer") != status.marker->cd_info.end()) {
 594                 status.out <<  "    PERFORMER " << cue_escape_cdtext (status.marker->cd_info["performer"]) << endl;
 595         }
 596
 597         if (status.marker->cd_info.find("composer") != status.marker->cd_info.end()) {
 598                 status.out << "    SONGWRITER " << cue_escape_cdtext (status.marker->cd_info["composer"]) << endl;
 599         }
 600
 601         if (status.track_position != status.track_start_frame) {
 602                 frames_to_cd_frames_string (buf, status.track_position);
 603                 status.out << "    INDEX 00" << buf << endl;
 604         }
 605
 606         frames_to_cd_frames_string (buf, status.track_start_frame);
 607         status.out << "    INDEX 01" << buf << endl;
 608
 609         status.index_number = 2;
 610         status.track_number++;
 611 }
 612
 613 void
 614 ExportHandler::write_track_info_toc (CDMarkerStatus & status)
 615 {
 616         gchar buf[18];
 617
 618         status.out << endl << "TRACK AUDIO" << endl;
 619
 620         if (status.marker->cd_info.find("scms") != status.marker->cd_info.end())  {
 621                 status.out << "NO ";
 622         }
 623         status.out << "COPY" << endl;
 624
 625         if (status.marker->cd_info.find("preemph") != status.marker->cd_info.end())  {
 626                 status.out << "PRE_EMPHASIS" << endl;
 627         } else {
 628                 status.out << "NO PRE_EMPHASIS" << endl;
 629         }
 630
 631         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end())  {
 632                 status.out << "ISRC \"" << status.marker->cd_info["isrc"] << "\"" << endl;
 633         }
 634
 635         status.out << "CD_TEXT {" << endl << "  LANGUAGE 0 {" << endl;
 636         status.out << "     TITLE " << toc_escape_cdtext (status.marker->name()) << endl;
 637
 638         status.out << "     PERFORMER ";
 639         if (status.marker->cd_info.find("performer") != status.marker->cd_info.end()) {
 640                 status.out << toc_escape_cdtext (status.marker->cd_info["performer"]) << endl;
 641         } else {
 642                 status.out << "\"\"" << endl;
 643         }
 644
 645         if (status.marker->cd_info.find("composer") != status.marker->cd_info.end()) {
 646                 status.out  << "     SONGWRITER " << toc_escape_cdtext (status.marker->cd_info["composer"]) << endl;
 647         }
 648
 649         if (status.marker->cd_info.find("isrc") != status.marker->cd_info.end()) {
 650                 status.out  << "     ISRC \"";
 651                 status.out << status.marker->cd_info["isrc"].substr(0,2) << "-";
 652                 status.out << status.marker->cd_info["isrc"].substr(2,3) << "-";
 653                 status.out << status.marker->cd_info["isrc"].substr(5,2) << "-";
 654                 status.out << status.marker->cd_info["isrc"].substr(7,5) << "\"" << endl;
 655         }
 656
 657         status.out << "  }" << endl << "}" << endl;
 658
 659         frames_to_cd_frames_string (buf, status.track_position);
 660         status.out << "FILE " << toc_escape_filename (status.filename) << ' ' << buf;
 661
 662         frames_to_cd_frames_string (buf, status.track_duration);
 663         status.out << buf << endl;
 664
 665         frames_to_cd_frames_string (buf, status.track_start_frame - status.track_position);
 666         status.out << "START" << buf << endl;
 667 }
 668
 669 void
 670 ExportHandler::write_index_info_cue (CDMarkerStatus & status)
 671 {
 672         gchar buf[18];
 673
 674         snprintf (buf, sizeof(buf), "    INDEX %02d", cue_indexnum);
 675         status.out << buf;
 676         frames_to_cd_frames_string (buf, status.index_position);
 677         status.out << buf << endl;
 678
 679         cue_indexnum++;
 680 }
 681
 682 void
 683 ExportHandler::write_index_info_toc (CDMarkerStatus & status)
 684 {
 685         gchar buf[18];
 686
 687         frames_to_cd_frames_string (buf, status.index_position - status.track_position);
 688         status.out << "INDEX" << buf << endl;
 689 }
 690
 691 void
 692 ExportHandler::frames_to_cd_frames_string (char* buf, framepos_t when)
 693 {
 694         framecnt_t remainder;
 695         framecnt_t fr = session.nominal_frame_rate();
 696         int mins, secs, frames;
 697
 698         mins = when / (60 * fr);
 699         remainder = when - (mins * 60 * fr);
 700         secs = remainder / fr;
 701         remainder -= secs * fr;
 702         frames = remainder / (fr / 75);
 703         sprintf (buf, " %02d:%02d:%02d", mins, secs, frames);
 704 }
 705
 706 std::string
 707 ExportHandler::toc_escape_cdtext (const std::string& txt)
 708 {
 709         Glib::ustring check (txt);
 710         std::string out;
 711         std::string latin1_txt;
 712         char buf[5];
 713
 714         try {
 715                 latin1_txt = Glib::convert (txt, "ISO-8859-1", "UTF-8");
 716         } catch (Glib::ConvertError& err) {
 717                 throw Glib::ConvertError (err.code(), string_compose (_("Cannot convert %1 to Latin-1 text"), txt));
 718         }
 719
 720         out = '"';
 721
 722         for (std::string::const_iterator c = latin1_txt.begin(); c != latin1_txt.end(); ++c) {
 723
 724                 if ((*c) == '"') {
 725                         out += "\\\"";
 726                 } else if ((*c) == '\\') {
 727                         out += "\\134";
 728                 } else if (isprint (*c)) {
 729                         out += *c;
 730                 } else {
 731                         snprintf (buf, sizeof (buf), "\\%03o", (int) (unsigned char) *c);
 732                         out += buf;
 733                 }
 734         }
 735
 736         out += '"';
 737
 738         return out;
 739 }
 740
 741 std::string
 742 ExportHandler::toc_escape_filename (const std::string& txt)
 743 {
 744         std::string out;
 745
 746         out = '"';
 747
 748         // We iterate byte-wise not character-wise over a UTF-8 string here,
 749         // because we only want to translate backslashes and double quotes
 750         for (std::string::const_iterator c = txt.begin(); c != txt.end(); ++c) {
 751
 752                 if (*c == '"') {
 753                         out += "\\\"";
 754                 } else if (*c == '\\') {
 755                         out += "\\134";
 756                 } else {
 757                         out += *c;
 758                 }
 759         }
 760
 761         out += '"';
 762
 763         return out;
 764 }
 765
 766 std::string
 767 ExportHandler::cue_escape_cdtext (const std::string& txt)
 768 {
 769         std::string latin1_txt;
 770         std::string out;
 771
 772         try {
 773                 latin1_txt = Glib::convert (txt, "ISO-8859-1", "UTF-8");
 774         } catch (Glib::ConvertError& err) {
 775                 throw Glib::ConvertError (err.code(), string_compose (_("Cannot convert %1 to Latin-1 text"), txt));
 776         }
 777
 778         // does not do much mor than UTF-8 to Latin1 translation yet, but
 779         // that may have to change if cue parsers in burning programs change
 780         out = '"' + latin1_txt + '"';
 781
 782         return out;
 783 }
 784
 785 } // namespace ARDOUR