gtk2_ardour/editor_audio_import.cc

   1 /*
   2     Copyright (C) 2000-2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <sys/types.h>
  21 #include <sys/stat.h>
  22 #include <sys/time.h>
  23 #include <errno.h>
  24 #include <unistd.h>
  25 #include <algorithm>
  26
  27 #include <sndfile.h>
  28
  29 #include "pbd/pthread_utils.h"
  30 #include "pbd/basename.h"
  31 #include "pbd/shortpath.h"
  32
  33 #include <gtkmm2ext/choice.h>
  34 #include <gtkmm2ext/window_title.h>
  35
  36 #include "ardour/session.h"
  37 #include "ardour/session_directory.h"
  38 #include "ardour/audioplaylist.h"
  39 #include "ardour/audioregion.h"
  40 #include "ardour/audio_diskstream.h"
  41 #include "ardour/midi_track.h"
  42 #include "ardour/midi_region.h"
  43 #include "ardour/utils.h"
  44 #include "ardour/audio_track.h"
  45 #include "ardour/audioplaylist.h"
  46 #include "ardour/audiofilesource.h"
  47 #include "ardour/region_factory.h"
  48 #include "ardour/source_factory.h"
  49 #include "ardour/session.h"
  50 #include "pbd/memento_command.h"
  51
  52 #include "ardour_ui.h"
  53 #include "editor.h"
  54 #include "sfdb_ui.h"
  55 #include "editing.h"
  56 #include "audio_time_axis.h"
  57 #include "midi_time_axis.h"
  58 #include "session_import_dialog.h"
  59 #include "utils.h"
  60 #include "gui_thread.h"
  61
  62 #include "i18n.h"
  63
  64 using namespace std;
  65 using namespace ARDOUR;
  66 using namespace PBD;
  67 using namespace sigc;
  68 using namespace Gtk;
  69 using namespace Gtkmm2ext;
  70 using namespace Editing;
  71 using Glib::ustring;
  72
  73 /* Functions supporting the incorporation of external (non-captured) audio material into ardour */
  74
  75 void
  76 Editor::add_external_audio_action (ImportMode mode_hint)
  77 {
  78         if (session == 0) {
  79                 MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
  80                 msg.run ();
  81                 return;
  82         }
  83
  84         if (sfbrowser == 0) {
  85                 sfbrowser = new SoundFileOmega (*this, _("Add existing media"), session, 0, true, mode_hint);
  86         } else {
  87                 sfbrowser->set_mode (mode_hint);
  88         }
  89
  90         external_audio_dialog ();
  91 }
  92
  93 void
  94 Editor::external_audio_dialog ()
  95 {
  96         vector<Glib::ustring> paths;
  97         uint32_t track_cnt;
  98
  99         if (session == 0) {
 100                 MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
 101                 msg.run ();
 102                 return;
 103         }
 104
 105         track_cnt = 0;
 106
 107         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
 108                 AudioTimeAxisViewPtr atv = boost::dynamic_pointer_cast<AudioTimeAxisView>(*x);
 109
 110                 if (!atv) {
 111                         continue;
 112                 } else if (atv->is_audio_track()) {
 113                         track_cnt++;
 114                 }
 115         }
 116
 117         if (sfbrowser == 0) {
 118                 sfbrowser = new SoundFileOmega (*this, _("Add existing media"), session, track_cnt, true);
 119         } else {
 120                 sfbrowser->reset (track_cnt);
 121         }
 122
 123         sfbrowser->show_all ();
 124
 125
 126         bool keepRunning;
 127
 128         do {
 129                 keepRunning = false;
 130
 131                 int response = sfbrowser->run ();
 132
 133                 switch (response) {
 134                         case RESPONSE_APPLY:
 135                                 // leave the dialog open
 136                                 break;
 137
 138                         case RESPONSE_OK:
 139                                 sfbrowser->hide ();
 140                                 break;
 141
 142                         default:
 143                                 // cancel from the browser - we are done
 144                                 sfbrowser->hide ();
 145                                 return;
 146                 }
 147
 148                 /* lets do it */
 149
 150                 paths = sfbrowser->get_paths ();
 151
 152                 ImportPosition pos = sfbrowser->get_position ();
 153                 ImportMode mode = sfbrowser->get_mode ();
 154                 ImportDisposition chns = sfbrowser->get_channel_disposition ();
 155                 nframes64_t where;
 156
 157                 switch (pos) {
 158                         case ImportAtEditPoint:
 159                                 where = get_preferred_edit_position ();
 160                                 break;
 161                         case ImportAtTimestamp:
 162                                 where = -1;
 163                                 break;
 164                         case ImportAtPlayhead:
 165                                 where = playhead_cursor->current_frame;
 166                                 break;
 167                         case ImportAtStart:
 168                                 where = session->current_start_frame();
 169                                 break;
 170                 }
 171
 172                 SrcQuality quality = sfbrowser->get_src_quality();
 173
 174
 175                 if (sfbrowser->copy_files_btn.get_active()) {
 176                         do_import (paths, chns, mode, quality, where);
 177                 } else {
 178                         do_embed (paths, chns, mode, where);
 179                 }
 180
 181                 if (response == RESPONSE_APPLY) {
 182                         sfbrowser->clear_selection ();
 183                         keepRunning = true;
 184                 }
 185
 186         } while (keepRunning);
 187 }
 188
 189 void
 190 Editor::session_import_dialog ()
 191 {
 192         SessionImportDialog dialog (*session);
 193         ensure_float (dialog);
 194         dialog.run ();
 195 }
 196
 197 typedef std::map<PBD::ID,boost::shared_ptr<ARDOUR::Source> > SourceMap;
 198
 199 /**
 200  * Updating is still disabled, see note in libs/ardour/import.cc Session::import_audiofiles()
 201  *
 202  * all_or_nothing:
 203  *   true  = show "Update", "Import" and "Skip"
 204  *   false = show "Import", and "Cancel"
 205  *
 206  * Returns:
 207  *     0  To update an existing source of the same name
 208  *     1  To import/embed the file normally (make sure the new name will be unique)
 209  *     2  If the user wants to skip this file
 210  **/
 211 int
 212 Editor::check_whether_and_how_to_import(string path, bool all_or_nothing)
 213 {
 214         string wave_name (Glib::path_get_basename(path));
 215
 216         SourceMap all_sources = session->get_sources();
 217         bool wave_name_exists = false;
 218
 219         for (SourceMap::iterator i = all_sources.begin(); i != all_sources.end(); ++i) {
 220                 string tmp (Glib::path_get_basename (i->second->path()));
 221                 if (tmp == wave_name) {
 222                         wave_name_exists = true;
 223                         break;
 224                 }
 225         }
 226
 227         int function = 1;
 228
 229         if (wave_name_exists) {
 230                 string message;
 231                 if (all_or_nothing) {
 232                         // updating is still disabled
 233                         //message = string_compose(_("The session already contains a source file named %1. Do you want to update that file (and thus all regions using the file) or import this file as a new file?"),wave_name);
 234                         message = string_compose(_("The session already contains a source file named %1. This file will be imported as a new file, please confirm."),wave_name);
 235                 } else {
 236                         message = string_compose(_("A source file %1 already exists. This operation will not update that source but import the file %2 as a new source, please confirm."), wave_name, wave_name);
 237
 238                 }
 239                 MessageDialog dialog(message, false, Gtk::MESSAGE_QUESTION, Gtk::BUTTONS_NONE, true);
 240
 241                 if (all_or_nothing) {
 242                         // disabled
 243                         //dialog.add_button("Update", 0);
 244                         dialog.add_button("Import", 1);
 245                         dialog.add_button("Skip",   2);
 246                 } else {
 247                         dialog.add_button("Import", 1);
 248                         dialog.add_button("Cancel", 2);
 249                 }
 250
 251                 //dialog.add_button("Skip all", 4); // All or rest?
 252
 253                 dialog.show();
 254
 255                 function = dialog.run ();
 256
 257                 dialog.hide();
 258         }
 259
 260         return function;
 261 }
 262
 263 boost::shared_ptr<AudioTrack>
 264 Editor::get_nth_selected_audio_track (int nth) const
 265 {
 266         AudioTimeAxisViewPtr atv;
 267         TrackSelection::iterator x;
 268
 269         for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
 270
 271                 atv = boost::dynamic_pointer_cast<AudioTimeAxisView>(*x);
 272
 273                 if (!atv) {
 274                         continue;
 275                 } else if (atv->is_audio_track()) {
 276                         --nth;
 277                 }
 278         }
 279
 280         if (x == selection->tracks.end()) {
 281                 atv = boost::dynamic_pointer_cast<AudioTimeAxisView>(selection->tracks.back());
 282         } else {
 283                 atv = boost::dynamic_pointer_cast<AudioTimeAxisView>(*x);
 284         }
 285
 286         if (!atv || !atv->is_audio_track()) {
 287                 return boost::shared_ptr<AudioTrack>();
 288         }
 289
 290         return atv->audio_track();
 291 }
 292
 293 boost::shared_ptr<MidiTrack>
 294 Editor::get_nth_selected_midi_track (int nth) const
 295 {
 296         MidiTimeAxisViewPtr mtv;
 297         TrackSelection::iterator x;
 298
 299         for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
 300
 301                 mtv = boost::dynamic_pointer_cast<MidiTimeAxisView>(*x);
 302
 303                 if (!mtv) {
 304                         continue;
 305                 } else if (mtv->is_midi_track()) {
 306                         --nth;
 307                 }
 308         }
 309
 310         if (x == selection->tracks.end()) {
 311                 mtv = boost::dynamic_pointer_cast<MidiTimeAxisView>(selection->tracks.back());
 312         } else {
 313                 mtv = boost::dynamic_pointer_cast<MidiTimeAxisView>(*x);
 314         }
 315
 316         if (!mtv || !mtv->is_midi_track()) {
 317                 return boost::shared_ptr<MidiTrack>();
 318         }
 319
 320         return mtv->midi_track();
 321 }
 322
 323 void
 324 Editor::do_import (vector<ustring> paths, ImportDisposition chns, ImportMode mode, SrcQuality quality, nframes64_t& pos)
 325 {
 326         boost::shared_ptr<Track> track;
 327         vector<ustring> to_import;
 328         int nth = 0;
 329
 330         if (interthread_progress_window == 0) {
 331                 build_interthread_progress_window ();
 332         }
 333
 334         if (chns == Editing::ImportMergeFiles) {
 335
 336                 /* create 1 region from all paths, add to 1 track,
 337                    ignore "track"
 338                 */
 339
 340                 bool cancel = false;
 341                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
 342                         int check = check_whether_and_how_to_import(*a, false);
 343                         if (check == 2) {
 344                                 cancel = true;
 345                                 break;
 346                         }
 347                 }
 348
 349                 if (!cancel) {
 350                         import_sndfiles (paths, mode, quality, pos, 1, 1, track, false, paths.size());
 351                 }
 352
 353         } else {
 354
 355                 bool replace = false;
 356                 bool ok = true;
 357                 vector<ustring>::size_type total = paths.size();
 358
 359                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end() && ok; ++a) {
 360
 361                         int check = check_whether_and_how_to_import(*a, true);
 362
 363                         if (check == 2 ) {
 364                                 // user said skip
 365                                 continue;
 366                         }
 367
 368                         if (check == 0) {
 369                                 fatal << "Updating existing sources should be disabled!" << endl;
 370                                 replace = true;
 371                         } else if (check == 1) {
 372                                 replace = false;
 373                         }
 374
 375
 376
 377                         switch (chns) {
 378                         case Editing::ImportDistinctFiles:
 379
 380                                 to_import.clear ();
 381                                 to_import.push_back (*a);
 382
 383                                 if (mode == Editing::ImportToTrack) {
 384                                         track = get_nth_selected_audio_track (nth++);
 385                                 }
 386
 387                                 ok = (import_sndfiles (to_import, mode, quality, pos, 1, -1, track, replace, total) == 0);
 388                                 break;
 389
 390                         case Editing::ImportDistinctChannels:
 391
 392                                 to_import.clear ();
 393                                 to_import.push_back (*a);
 394
 395                                 ok = (import_sndfiles (to_import, mode, quality, pos, -1, -1, track, replace, total) == 0);
 396                                 break;
 397
 398                         case Editing::ImportSerializeFiles:
 399
 400                                 to_import.clear ();
 401                                 to_import.push_back (*a);
 402
 403                                 ok = (import_sndfiles (to_import, mode, quality, pos, 1, 1, track, replace, total) == 0);
 404                                 break;
 405
 406                         case Editing::ImportMergeFiles:
 407                                 // Not entered, handled in earlier if() branch
 408                                 break;
 409                         }
 410                 }
 411         }
 412
 413         interthread_progress_window->hide_all ();
 414 }
 415
 416 void
 417 Editor::do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
 418 {
 419         boost::shared_ptr<Track> track;
 420         bool check_sample_rate = true;
 421         bool ok = false;
 422         vector<ustring> to_embed;
 423         bool multi = paths.size() > 1;
 424         int nth = 0;
 425
 426         switch (chns) {
 427         case Editing::ImportDistinctFiles:
 428                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
 429
 430                         to_embed.clear ();
 431                         to_embed.push_back (*a);
 432
 433                         if (mode == Editing::ImportToTrack) {
 434                                 track = get_nth_selected_audio_track (nth++);
 435                         }
 436
 437                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, 1, -1, track) < -1) {
 438                                 goto out;
 439                         }
 440                 }
 441                 break;
 442
 443         case Editing::ImportDistinctChannels:
 444                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
 445
 446                         to_embed.clear ();
 447                         to_embed.push_back (*a);
 448
 449                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, -1, -1, track) < -1) {
 450                                 goto out;
 451                         }
 452                 }
 453                 break;
 454
 455         case Editing::ImportMergeFiles:
 456                 if (embed_sndfiles (paths, multi, check_sample_rate, mode, pos, 1, 1, track) < -1) {
 457                         goto out;
 458                 }
 459         break;
 460
 461         case Editing::ImportSerializeFiles:
 462                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
 463
 464                         to_embed.clear ();
 465                         to_embed.push_back (*a);
 466
 467                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, 1, 1, track) < -1) {
 468                                 goto out;
 469                         }
 470                 }
 471                 break;
 472         }
 473
 474         ok = true;
 475
 476   out:
 477         if (ok) {
 478                 session->save_state ("");
 479         }
 480 }
 481
 482 int
 483 Editor::import_sndfiles (vector<ustring> paths, ImportMode mode, SrcQuality quality, nframes64_t& pos,
 484                          int target_regions, int target_tracks, boost::shared_ptr<Track> track, bool replace, uint32_t total)
 485 {
 486         WindowTitle title = string_compose (_("importing %1"), paths.front());
 487
 488         interthread_progress_window->set_title (title.get_string());
 489         interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
 490         interthread_progress_bar.set_fraction (0.0f);
 491         interthread_cancel_label.set_text (_("Cancel Import"));
 492         current_interthread_info = &import_status;
 493
 494         import_status.paths = paths;
 495         import_status.done = false;
 496         import_status.cancel = false;
 497         import_status.freeze = false;
 498         import_status.done = 0.0;
 499         import_status.quality = quality;
 500         import_status.replace_existing_source = replace;
 501         import_status.total = total;
 502
 503         import_status.mode = mode;
 504         import_status.pos = pos;
 505         import_status.target_tracks = target_tracks;
 506         import_status.target_regions = target_regions;
 507         import_status.track = track;
 508         import_status.replace = replace;
 509         interthread_progress_connection = Glib::signal_timeout().connect
 510                 (bind (mem_fun(*this, &Editor::import_progress_timeout), (gpointer) 0), 500);
 511
 512         track_canvas->get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
 513         gdk_flush ();
 514
 515         /* start import thread for this spec. this will ultimately call Session::import_audiofiles()
 516            which, if successful, will add the files as regions to the region list. its up to us
 517            (the GUI) to direct additional steps after that.
 518         */
 519
 520         pthread_create_and_store ("import", &import_status.thread, 0, _import_thread, this);
 521         pthread_detach (import_status.thread);
 522
 523         while (!import_status.done && !import_status.cancel) {
 524                 gtk_main_iteration ();
 525         }
 526
 527         interthread_progress_window->hide ();
 528         import_status.done = true;
 529         interthread_progress_connection.disconnect ();
 530
 531         if (!import_status.cancel && !import_status.sources.empty()) {
 532                 if (add_sources (import_status.paths,
 533                                  import_status.sources,
 534                                  import_status.pos,
 535                                  import_status.mode,
 536                                  import_status.target_regions,
 537                                  import_status.target_tracks,
 538                                  import_status.track, false) == 0) {
 539                         session->save_state ("");
 540                 }
 541
 542                 /* update position from results */
 543
 544                 pos = import_status.pos;
 545         }
 546
 547
 548         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 549         return 0;
 550 }
 551
 552 int
 553 Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
 554                         bool& check_sample_rate, ImportMode mode, nframes64_t& pos, int target_regions, int target_tracks,
 555                         boost::shared_ptr<Track>& track)
 556 {
 557         boost::shared_ptr<AudioFileSource> source;
 558         SourceList sources;
 559         string linked_path;
 560         SoundFileInfo finfo;
 561         int ret = 0;
 562         Glib::ustring path_to_use;
 563
 564         track_canvas->get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
 565         gdk_flush ();
 566
 567         for (vector<Glib::ustring>::iterator p = paths.begin(); p != paths.end(); ++p) {
 568
 569                 ustring path = *p;
 570
 571                 /* lets see if we can link it into the session */
 572
 573                 sys::path tmp = session->session_directory().sound_path() / Glib::path_get_basename(path);
 574                 linked_path = tmp.to_string();
 575
 576                 path_to_use = linked_path;
 577
 578                 if (link (path.c_str(), linked_path.c_str()) == 0) {
 579
 580                         /* there are many reasons why link(2) might have failed.
 581                            but if it succeeds, we now have a link in the
 582                            session sound dir that will protect against
 583                            unlinking of the original path. nice.
 584                         */
 585
 586                         path = linked_path;
 587                         path_to_use = Glib::path_get_basename (path);
 588
 589                 } else {
 590
 591                         /* one possible reason is that its already linked */
 592
 593                         if (errno == EEXIST) {
 594                                 struct stat sb;
 595
 596                                 if (stat (linked_path.c_str(), &sb) == 0) {
 597                                         if (sb.st_nlink > 1) { // its a hard link, assume its the one we want
 598                                                 path = linked_path;
 599                                                 path_to_use = Glib::path_get_basename (path);
 600                                         }
 601                                 }
 602                         }
 603                 }
 604
 605                 /* note that we temporarily truncated _id at the colon */
 606
 607                 string error_msg;
 608
 609                 if (!AudioFileSource::get_soundfile_info (path, finfo, error_msg)) {
 610                         error << string_compose(_("Editor: cannot open file \"%1\", (%2)"), path, error_msg ) << endmsg;
 611                         goto out;
 612                 }
 613
 614                 if (check_sample_rate  && (finfo.samplerate != (int) session->frame_rate())) {
 615                         vector<string> choices;
 616
 617                         if (multifile) {
 618                                 choices.push_back (_("Cancel entire import"));
 619                                 choices.push_back (_("Don't embed it"));
 620                                 choices.push_back (_("Embed all without questions"));
 621
 622                                 Gtkmm2ext::Choice rate_choice (
 623                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"),
 624                                                         short_path (path, 40)),
 625                                         choices, false);
 626
 627                                 int resx = rate_choice.run ();
 628
 629                                 switch (resx) {
 630                                 case 0: /* stop a multi-file import */
 631                                         ret = -2;
 632                                         goto out;
 633                                 case 1: /* don't embed this one */
 634                                         ret = -1;
 635                                         goto out;
 636                                 case 2: /* do it, and the rest without asking */
 637                                         check_sample_rate = false;
 638                                         break;
 639                                 case 3: /* do it */
 640                                         break;
 641                                 default:
 642                                         ret = -2;
 643                                         goto out;
 644                                 }
 645                         } else {
 646                                 choices.push_back (_("Cancel"));
 647                                 choices.push_back (_("Embed it anyway"));
 648
 649                                 Gtkmm2ext::Choice rate_choice (
 650                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), path),
 651                                         choices, false);
 652
 653                                 int resx = rate_choice.run ();
 654
 655                                 switch (resx) {
 656                                 case 0: /* don't import */
 657                                         ret = -1;
 658                                         goto out;
 659                                 case 1: /* do it */
 660                                         break;
 661                                 default:
 662                                         ret = -2;
 663                                         goto out;
 664                                 }
 665                         }
 666                 }
 667
 668                 track_canvas->get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
 669
 670                 for (int n = 0; n < finfo.channels; ++n) {
 671                         try {
 672
 673                                 /* check if we have this thing embedded already */
 674
 675                                 boost::shared_ptr<Source> s;
 676
 677                                 if ((s = session->source_by_path_and_channel (path, n)) == 0) {
 678
 679                                         source = boost::dynamic_pointer_cast<AudioFileSource> (
 680                                                         SourceFactory::createReadable (DataType::AUDIO, *session,
 681                                                                         path_to_use, false, n,
 682                                                                         (mode == ImportAsTapeTrack
 683                                                                                 ? Source::Destructive
 684                                                                                 : Source::Flag (0)),
 685                                                                         true, true));
 686                                 } else {
 687                                         source = boost::dynamic_pointer_cast<AudioFileSource> (s);
 688                                 }
 689
 690                                 sources.push_back(source);
 691                         }
 692
 693                         catch (failed_constructor& err) {
 694                                 error << string_compose(_("could not open %1"), path) << endmsg;
 695                                 goto out;
 696                         }
 697
 698                         ARDOUR_UI::instance()->flush_pending ();
 699                 }
 700         }
 701
 702         if (sources.empty()) {
 703                 goto out;
 704         }
 705
 706         ret = add_sources (paths, sources, pos, mode, target_regions, target_tracks, track, true);
 707
 708   out:
 709         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 710         return ret;
 711 }
 712
 713 int
 714 Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64_t& pos, ImportMode mode,
 715                      int target_regions, int target_tracks, boost::shared_ptr<Track>& track, bool add_channel_suffix)
 716 {
 717         vector<boost::shared_ptr<Region> > regions;
 718         ustring region_name;
 719         uint32_t input_chan = 0;
 720         uint32_t output_chan = 0;
 721
 722         if (pos == -1) { // "use timestamp"
 723                 if (sources[0]->natural_position() != 0) {
 724                         pos = sources[0]->natural_position();
 725                 } else {
 726                         pos = get_preferred_edit_position ();
 727                 }
 728         }
 729
 730         // kludge (for MIDI we're abusing "channel" for "track" here)
 731         if (paths.front().rfind(".mid") != Glib::ustring::npos)
 732                 target_regions = -1;
 733
 734         if (target_regions == 1) {
 735
 736                 /* take all the sources we have and package them up as a region */
 737
 738                 region_name = region_name_from_path (paths.front(), (sources.size() > 1), false);
 739
 740                 regions.push_back (RegionFactory::create (sources, 0, sources[0]->length(pos), region_name, 0,
 741                                 Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External)));
 742
 743         } else if (target_regions == -1 || target_regions > 1) {
 744
 745                 /* take each source and create a region for each one */
 746
 747                 SourceList just_one;
 748                 SourceList::iterator x;
 749                 uint32_t n;
 750
 751                 for (n = 0, x = sources.begin(); x != sources.end(); ++x, ++n) {
 752
 753                         just_one.clear ();
 754                         just_one.push_back (*x);
 755
 756                         region_name = region_name_from_path ((*x)->path(), false, false, sources.size(), n);
 757
 758                         regions.push_back (RegionFactory::create (just_one, 0, (*x)->length(pos), region_name, 0,
 759                                         Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External)));
 760
 761                 }
 762         }
 763
 764         if (target_regions == 1) {
 765                 input_chan = regions.front()->n_channels();
 766         } else {
 767                 if (target_tracks == 1) {
 768                         input_chan = regions.size();
 769                 } else {
 770                         input_chan = 1;
 771                 }
 772         }
 773
 774         if (Config->get_output_auto_connect() & AutoConnectMaster) {
 775                 output_chan = (session->master_out() ? session->master_out()->n_inputs().n_audio() : input_chan);
 776         } else {
 777                 output_chan = input_chan;
 778         }
 779
 780         int n = 0;
 781
 782         for (vector<boost::shared_ptr<Region> >::iterator r = regions.begin(); r != regions.end(); ++r, ++n) {
 783
 784                 finish_bringing_in_material (*r, input_chan, output_chan, pos, mode, track);
 785
 786                 if (target_tracks != 1) {
 787                         track.reset ();
 788                 } else {
 789                         pos += (*r)->length();
 790                 }
 791         }
 792
 793         /* setup peak file building in another thread */
 794
 795         for (SourceList::iterator x = sources.begin(); x != sources.end(); ++x) {
 796                 SourceFactory::setup_peakfile (*x, true);
 797         }
 798
 799         return 0;
 800 }
 801
 802 int
 803 Editor::finish_bringing_in_material (boost::shared_ptr<Region> region, uint32_t in_chans, uint32_t out_chans, nframes64_t& pos,
 804                                   ImportMode mode, boost::shared_ptr<Track>& existing_track)
 805 {
 806         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
 807         boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
 808
 809         switch (mode) {
 810         case ImportAsRegion:
 811                 /* relax, its been done */
 812                 break;
 813
 814         case ImportToTrack:
 815         {
 816                 if (!existing_track) {
 817
 818                         if (ar) {
 819                                 existing_track = get_nth_selected_audio_track (0);
 820                         } else if (mr) {
 821                                 existing_track = get_nth_selected_midi_track (0);
 822                         }
 823
 824                         if (!existing_track) {
 825                                 return -1;
 826                         }
 827                 }
 828
 829                 boost::shared_ptr<Playlist> playlist = existing_track->diskstream()->playlist();
 830                 boost::shared_ptr<Region> copy (RegionFactory::create (region));
 831                 begin_reversible_command (_("insert file"));
 832                 XMLNode &before = playlist->get_state();
 833                 playlist->add_region (copy, pos);
 834                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
 835                 commit_reversible_command ();
 836                 break;
 837         }
 838
 839         case ImportAsTrack:
 840         {
 841                 if (!existing_track) {
 842                         if (ar) {
 843                                 list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Normal, 0, 1));
 844
 845                                 if (at.empty()) {
 846                                         return -1;
 847                                 }
 848
 849                                 existing_track = at.front();
 850                         } else if (mr) {
 851                                 list<boost::shared_ptr<MidiTrack> > mt (session->new_midi_track (Normal, 0, 1));
 852
 853                                 if (mt.empty()) {
 854                                         return -1;
 855                                 }
 856
 857                                 existing_track = mt.front();
 858                         }
 859
 860                         existing_track->set_name (region->name());
 861                 }
 862
 863                 boost::shared_ptr<Region> copy (RegionFactory::create (region));
 864                 existing_track->diskstream()->playlist()->add_region (copy, pos);
 865                 break;
 866         }
 867
 868
 869         case ImportAsTapeTrack:
 870         {
 871                 if (!ar)
 872                         return -1;
 873
 874                 list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Destructive));
 875                 if (!at.empty()) {
 876                         boost::shared_ptr<Region> copy (RegionFactory::create (region));
 877                         at.front()->set_name (basename_nosuffix (copy->name()));
 878                         at.front()->diskstream()->playlist()->add_region (copy, pos);
 879                 }
 880                 break;
 881         }
 882         }
 883
 884         return 0;
 885 }
 886
 887 void *
 888 Editor::_import_thread (void *arg)
 889 {
 890         PBD::notify_gui_about_thread_creation (pthread_self(), X_("Import"));
 891
 892         Editor *ed = (Editor *) arg;
 893         return ed->import_thread ();
 894 }
 895
 896 void *
 897 Editor::import_thread ()
 898 {
 899         session->import_audiofiles (import_status);
 900         pthread_exit_pbd (0);
 901         /*NOTREACHED*/
 902         return 0;
 903 }
 904
 905 gint
 906 Editor::import_progress_timeout (void *arg)
 907 {
 908         bool reset = false;
 909
 910         if (!interthread_progress_window->is_visible()) {
 911                 interthread_progress_window->show_all ();
 912                 reset = true;
 913         }
 914
 915         interthread_progress_label.set_text (import_status.doing_what);
 916
 917         if (import_status.freeze) {
 918                 interthread_cancel_button.set_sensitive(false);
 919         } else {
 920                 interthread_cancel_button.set_sensitive(true);
 921         }
 922
 923         if (import_status.doing_what == "building peak files") {
 924                 interthread_progress_bar.pulse ();
 925                 return FALSE;
 926         } else {
 927                 float val = import_status.progress;
 928                 interthread_progress_bar.set_fraction (min (max (0.0f, val), 1.0f));
 929         }
 930
 931         if (reset) {
 932
 933                 /* the window is now visible, speed up the updates */
 934
 935                 interthread_progress_connection.disconnect ();
 936                 interthread_progress_connection = Glib::signal_timeout().connect
 937                         (bind (mem_fun(*this, &Editor::import_progress_timeout), (gpointer) 0), 100);
 938                 return false;
 939         } else {
 940                 return !(import_status.done || import_status.cancel);
 941         }
 942 }
 943