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