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 #include "pbd/stateful_diff_command.h"
  33
  34 #include <gtkmm2ext/choice.h>
  35
  36 #include "ardour/audio_track.h"
  37 #include "ardour/audiofilesource.h"
  38 #include "ardour/audioregion.h"
  39 #include "ardour/midi_region.h"
  40 #include "ardour/midi_track.h"
  41 #include "ardour/operations.h"
  42 #include "ardour/region_factory.h"
  43 #include "ardour/smf_source.h"
  44 #include "ardour/source_factory.h"
  45 #include "ardour/utils.h"
  46 #include "pbd/memento_command.h"
  47
  48 #include "ardour_ui.h"
  49 #include "cursor_context.h"
  50 #include "editor.h"
  51 #include "sfdb_ui.h"
  52 #include "editing.h"
  53 #include "audio_time_axis.h"
  54 #include "midi_time_axis.h"
  55 #include "session_import_dialog.h"
  56 #include "gui_thread.h"
  57 #include "interthread_progress_window.h"
  58 #include "mouse_cursors.h"
  59 #include "editor_cursors.h"
  60
  61 #include "pbd/i18n.h"
  62
  63 using namespace std;
  64 using namespace ARDOUR;
  65 using namespace PBD;
  66 using namespace Gtk;
  67 using namespace Gtkmm2ext;
  68 using namespace Editing;
  69 using std::string;
  70
  71 /* Functions supporting the incorporation of external (non-captured) audio material into ardour */
  72
  73 void
  74 Editor::add_external_audio_action (ImportMode mode_hint)
  75 {
  76         if (_session == 0) {
  77                 MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
  78                 msg.run ();
  79                 return;
  80         }
  81
  82         if (sfbrowser == 0) {
  83                 sfbrowser = new SoundFileOmega (_("Add Existing Media"), _session, 0, 0, true, mode_hint);
  84         } else {
  85                 sfbrowser->set_mode (mode_hint);
  86         }
  87
  88         external_audio_dialog ();
  89 }
  90
  91 void
  92 Editor::external_audio_dialog ()
  93 {
  94         vector<string> paths;
  95         uint32_t audio_track_cnt;
  96         uint32_t midi_track_cnt;
  97
  98         if (_session == 0) {
  99                 MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
 100                 msg.run ();
 101                 return;
 102         }
 103
 104         audio_track_cnt = 0;
 105         midi_track_cnt = 0;
 106
 107         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
 108                 AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*>(*x);
 109
 110                 if (atv) {
 111                         if (atv->is_audio_track()) {
 112                                 audio_track_cnt++;
 113                         }
 114
 115                 } else {
 116                         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(*x);
 117
 118                         if (mtv) {
 119                                 if (mtv->is_midi_track()) {
 120                                         midi_track_cnt++;
 121                                 }
 122                         }
 123                 }
 124         }
 125
 126         if (sfbrowser == 0) {
 127                 sfbrowser = new SoundFileOmega (_("Add Existing Media"), _session, audio_track_cnt, midi_track_cnt, true);
 128         } else {
 129                 sfbrowser->reset (audio_track_cnt, midi_track_cnt);
 130         }
 131
 132         sfbrowser->show_all ();
 133 }
 134
 135 void
 136 Editor::session_import_dialog ()
 137 {
 138         SessionImportDialog dialog (_session);
 139         dialog.run ();
 140 }
 141
 142 typedef std::map<PBD::ID,boost::shared_ptr<ARDOUR::Source> > SourceMap;
 143
 144 /**
 145  * Updating is still disabled, see note in libs/ardour/import.cc Session::import_files()
 146  *
 147  * all_or_nothing:
 148  *   true  = show "Update", "Import" and "Skip"
 149  *   false = show "Import", and "Cancel"
 150  *
 151  * Returns:
 152  *     0  To update an existing source of the same name
 153  *     1  To import/embed the file normally (make sure the new name will be unique)
 154  *     2  If the user wants to skip this file
 155  **/
 156 int
 157 Editor::check_whether_and_how_to_import(string path, bool all_or_nothing)
 158 {
 159         string wave_name (Glib::path_get_basename(path));
 160
 161         bool already_exists = false;
 162         uint32_t existing;
 163
 164         if ((existing = _session->count_sources_by_origin (path)) > 0) {
 165                 already_exists = true;
 166         }
 167
 168         int function = 1;
 169
 170         if (already_exists) {
 171                 string message;
 172                 if (all_or_nothing) {
 173                         // updating is still disabled
 174                         //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);
 175                         message = string_compose (_("The session already contains a source file named %1.  Do you want to import %1 as a new file, or skip it?"), wave_name);
 176                 } else {
 177                         message = string_compose (_("The session already contains a source file named %1.  Do you want to import %2 as a new source, or skip it?"), wave_name, wave_name);
 178
 179                 }
 180                 MessageDialog dialog(message, false, Gtk::MESSAGE_QUESTION, Gtk::BUTTONS_NONE, true);
 181
 182                 if (all_or_nothing) {
 183                         // disabled
 184                         //dialog.add_button("Update", 0);
 185                         dialog.add_button("Import", 1);
 186                         dialog.add_button("Skip",   2);
 187                 } else {
 188                         dialog.add_button("Import", 1);
 189                         dialog.add_button("Cancel", 2);
 190                 }
 191
 192                 //dialog.add_button("Skip all", 4); // All or rest?
 193
 194                 dialog.show();
 195
 196                 function = dialog.run ();
 197
 198                 dialog.hide();
 199         }
 200
 201         return function;
 202 }
 203
 204 boost::shared_ptr<AudioTrack>
 205 Editor::get_nth_selected_audio_track (int nth) const
 206 {
 207         AudioTimeAxisView* atv;
 208         TrackSelection::iterator x;
 209
 210         for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
 211
 212                 atv = dynamic_cast<AudioTimeAxisView*>(*x);
 213
 214                 if (!atv) {
 215                         continue;
 216                 } else if (atv->is_audio_track()) {
 217                         --nth;
 218                 }
 219         }
 220
 221         if (x == selection->tracks.end()) {
 222                 atv = dynamic_cast<AudioTimeAxisView*>(selection->tracks.back());
 223         } else {
 224                 atv = dynamic_cast<AudioTimeAxisView*>(*x);
 225         }
 226
 227         if (!atv || !atv->is_audio_track()) {
 228                 return boost::shared_ptr<AudioTrack>();
 229         }
 230
 231         return atv->audio_track();
 232 }
 233
 234 boost::shared_ptr<MidiTrack>
 235 Editor::get_nth_selected_midi_track (int nth) const
 236 {
 237         MidiTimeAxisView* mtv;
 238         TrackSelection::iterator x;
 239
 240         for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
 241
 242                 mtv = dynamic_cast<MidiTimeAxisView*>(*x);
 243
 244                 if (!mtv) {
 245                         continue;
 246                 } else if (mtv->is_midi_track()) {
 247                         --nth;
 248                 }
 249         }
 250
 251         if (x == selection->tracks.end()) {
 252                 mtv = dynamic_cast<MidiTimeAxisView*>(selection->tracks.back());
 253         } else {
 254                 mtv = dynamic_cast<MidiTimeAxisView*>(*x);
 255         }
 256
 257         if (!mtv || !mtv->is_midi_track()) {
 258                 return boost::shared_ptr<MidiTrack>();
 259         }
 260
 261         return mtv->midi_track();
 262 }
 263
 264 void
 265 Editor::do_import (vector<string>        paths,
 266                    ImportDisposition     disposition,
 267                    ImportMode            mode,
 268                    SrcQuality            quality,
 269                    framepos_t&           pos,
 270                    ARDOUR::PluginInfoPtr instrument)
 271 {
 272         boost::shared_ptr<Track> track;
 273         vector<string> to_import;
 274         int nth = 0;
 275         bool use_timestamp = (pos == -1);
 276
 277         current_interthread_info = &import_status;
 278         import_status.current = 1;
 279         import_status.total = paths.size ();
 280         import_status.all_done = false;
 281
 282         ImportProgressWindow ipw (&import_status, _("Import"), _("Cancel Import"));
 283
 284         bool ok = true;
 285
 286         if (disposition == Editing::ImportMergeFiles) {
 287
 288                 /* create 1 region from all paths, add to 1 track,
 289                    ignore "track"
 290                 */
 291
 292                 bool cancel = false;
 293                 for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
 294                         int check = check_whether_and_how_to_import(*a, false);
 295                         if (check == 2) {
 296                                 cancel = true;
 297                                 break;
 298                         }
 299                 }
 300
 301                 if (cancel) {
 302                         ok = false;
 303                 } else {
 304                         ipw.show ();
 305                         ok = (import_sndfiles (paths, disposition, mode, quality, pos, 1, 1, track, false, instrument) == 0);
 306                         import_status.sources.clear();
 307                 }
 308
 309         } else {
 310
 311                 bool replace = false;
 312
 313                 for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
 314
 315                         const int check = check_whether_and_how_to_import (*a, true);
 316
 317                         switch (check) {
 318                         case 2:
 319                                 // user said skip
 320                                 continue;
 321                         case 0:
 322                                 fatal << "Updating existing sources should be disabled!" << endmsg;
 323                                 abort(); /* NOTREACHED*/
 324                                 break;
 325                         case 1:
 326                                 replace = false;
 327                                 break;
 328                         default:
 329                                 fatal << "Illegal return " << check <<  " from check_whether_and_how_to_import()!" << endmsg;
 330                                 abort(); /* NOTREACHED*/
 331                         }
 332
 333                         /* have to reset this for every file we handle */
 334
 335                         if (use_timestamp) {
 336                                 pos = -1;
 337                         }
 338
 339                         ipw.show ();
 340
 341                         switch (disposition) {
 342                         case Editing::ImportDistinctFiles:
 343
 344                                 to_import.clear ();
 345                                 to_import.push_back (*a);
 346
 347                                 if (mode == Editing::ImportToTrack) {
 348                                         track = get_nth_selected_audio_track (nth++);
 349                                 }
 350
 351                                 ok = (import_sndfiles (to_import, disposition, mode, quality, pos, 1, -1, track, replace, instrument) == 0);
 352                                 import_status.sources.clear();
 353                                 break;
 354
 355                         case Editing::ImportDistinctChannels:
 356
 357                                 to_import.clear ();
 358                                 to_import.push_back (*a);
 359
 360                                 ok = (import_sndfiles (to_import, disposition, mode, quality, pos, -1, -1, track, replace, instrument) == 0);
 361                                 import_status.sources.clear();
 362                                 break;
 363
 364                         case Editing::ImportSerializeFiles:
 365
 366                                 to_import.clear ();
 367                                 to_import.push_back (*a);
 368
 369                                 ok = (import_sndfiles (to_import, disposition, mode, quality, pos, 1, 1, track, replace, instrument) == 0);
 370                                 import_status.sources.clear();
 371                                 break;
 372
 373                         case Editing::ImportMergeFiles:
 374                                 // Not entered, handled in earlier if() branch
 375                                 break;
 376                         }
 377                 }
 378         }
 379
 380         if (ok) {
 381                 _session->save_state ("");
 382         }
 383
 384         import_status.all_done = true;
 385 }
 386
 387 void
 388 Editor::do_embed (vector<string> paths, ImportDisposition import_as, ImportMode mode, framepos_t& pos, ARDOUR::PluginInfoPtr instrument)
 389 {
 390         boost::shared_ptr<Track> track;
 391         bool check_sample_rate = true;
 392         bool ok = false;
 393         vector<string> to_embed;
 394         bool multi = paths.size() > 1;
 395         int nth = 0;
 396         bool use_timestamp = (pos == -1);
 397
 398         switch (import_as) {
 399         case Editing::ImportDistinctFiles:
 400                 for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
 401
 402                         /* have to reset this for every file we handle */
 403                         if (use_timestamp) {
 404                                 pos = -1;
 405                         }
 406
 407                         to_embed.clear ();
 408                         to_embed.push_back (*a);
 409
 410                         if (mode == Editing::ImportToTrack) {
 411                                 track = get_nth_selected_audio_track (nth++);
 412                         }
 413
 414                         if (embed_sndfiles (to_embed, multi, check_sample_rate, import_as, mode, pos, 1, -1, track, instrument) < -1) {
 415                                 goto out;
 416                         }
 417                 }
 418                 break;
 419
 420         case Editing::ImportDistinctChannels:
 421                 for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
 422
 423                         /* have to reset this for every file we handle */
 424                         if (use_timestamp) {
 425                                 pos = -1;
 426                         }
 427
 428                         to_embed.clear ();
 429                         to_embed.push_back (*a);
 430
 431                         if (embed_sndfiles (to_embed, multi, check_sample_rate, import_as, mode, pos, -1, -1, track, instrument) < -1) {
 432                                 goto out;
 433                         }
 434                 }
 435                 break;
 436
 437         case Editing::ImportMergeFiles:
 438                 if (embed_sndfiles (paths, multi, check_sample_rate, import_as, mode, pos, 1, 1, track, instrument) < -1) {
 439                         goto out;
 440                 }
 441                 break;
 442
 443         case Editing::ImportSerializeFiles:
 444                 for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
 445
 446                         /* have to reset this for every file we handle */
 447                         if (use_timestamp) {
 448                                 pos = -1;
 449                         }
 450
 451                         to_embed.clear ();
 452                         to_embed.push_back (*a);
 453
 454                         if (embed_sndfiles (to_embed, multi, check_sample_rate, import_as, mode, pos, 1, 1, track, instrument) < -1) {
 455                                 goto out;
 456                         }
 457                 }
 458                 break;
 459         }
 460
 461         ok = true;
 462
 463   out:
 464         if (ok) {
 465                 _session->save_state ("");
 466         }
 467 }
 468
 469 int
 470 Editor::import_sndfiles (vector<string>            paths,
 471                          ImportDisposition         disposition,
 472                          ImportMode                mode,
 473                          SrcQuality                quality,
 474                          framepos_t&               pos,
 475                          int                       target_regions,
 476                          int                       target_tracks,
 477                          boost::shared_ptr<Track>& track,
 478                          bool                      replace,
 479                          ARDOUR::PluginInfoPtr     instrument)
 480 {
 481         import_status.paths = paths;
 482         import_status.done = false;
 483         import_status.cancel = false;
 484         import_status.freeze = false;
 485         import_status.quality = quality;
 486         import_status.replace_existing_source = replace;
 487         import_status.split_midi_channels = (disposition == Editing::ImportDistinctChannels);
 488
 489         import_status.mode = mode;
 490         import_status.pos = pos;
 491         import_status.target_tracks = target_tracks;
 492         import_status.target_regions = target_regions;
 493         import_status.track = track;
 494         import_status.replace = replace;
 495
 496         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
 497         gdk_flush ();
 498
 499         /* start import thread for this spec. this will ultimately call Session::import_files()
 500            which, if successful, will add the files as regions to the region list. its up to us
 501            (the GUI) to direct additional steps after that.
 502         */
 503
 504         pthread_create_and_store ("import", &import_status.thread, _import_thread, this);
 505         pthread_detach (import_status.thread);
 506
 507         while (!import_status.done && !import_status.cancel) {
 508                 gtk_main_iteration ();
 509         }
 510
 511         // wait for thread to terminate
 512         while (!import_status.done) {
 513                 gtk_main_iteration ();
 514         }
 515
 516         int result = -1;
 517
 518         if (!import_status.cancel && !import_status.sources.empty()) {
 519                 result = add_sources (
 520                         import_status.paths,
 521                         import_status.sources,
 522                         import_status.pos,
 523                         disposition,
 524                         import_status.mode,
 525                         import_status.target_regions,
 526                         import_status.target_tracks,
 527                         track, false, instrument
 528                         );
 529
 530                 /* update position from results */
 531
 532                 pos = import_status.pos;
 533         }
 534
 535         return result;
 536 }
 537
 538 int
 539 Editor::embed_sndfiles (vector<string>            paths,
 540                         bool                      multifile,
 541                         bool&                     check_sample_rate,
 542                         ImportDisposition         disposition,
 543                         ImportMode                mode,
 544                         framepos_t&               pos,
 545                         int                       target_regions,
 546                         int                       target_tracks,
 547                         boost::shared_ptr<Track>& track,
 548                         ARDOUR::PluginInfoPtr     instrument)
 549 {
 550         boost::shared_ptr<AudioFileSource> source;
 551         SourceList sources;
 552         string linked_path;
 553         SoundFileInfo finfo;
 554
 555         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
 556         gdk_flush ();
 557
 558         for (vector<string>::iterator p = paths.begin(); p != paths.end(); ++p) {
 559
 560                 string path = *p;
 561                 string error_msg;
 562
 563                 /* note that we temporarily truncated _id at the colon */
 564
 565                 if (!AudioFileSource::get_soundfile_info (path, finfo, error_msg)) {
 566                         error << string_compose(_("Editor: cannot open file \"%1\", (%2)"), path, error_msg ) << endmsg;
 567                         return -3;
 568                 }
 569
 570                 if (check_sample_rate  && (finfo.samplerate != (int) _session->frame_rate())) {
 571                         vector<string> choices;
 572
 573                         if (multifile) {
 574                                 choices.push_back (_("Cancel entire import"));
 575                                 choices.push_back (_("Don't embed it"));
 576                                 choices.push_back (_("Embed all without questions"));
 577
 578                                 Gtkmm2ext::Choice rate_choice (
 579                                         _("Sample rate"),
 580                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"),
 581                                                         short_path (path, 40)),
 582                                         choices, false
 583                                         );
 584
 585                                 int resx = rate_choice.run ();
 586
 587                                 switch (resx) {
 588                                 case 0: /* stop a multi-file import */
 589                                         return -2;
 590                                 case 1: /* don't embed this one */
 591                                         return -1;
 592                                 case 2: /* do it, and the rest without asking */
 593                                         check_sample_rate = false;
 594                                         break;
 595                                 case 3: /* do it */
 596                                         break;
 597                                 default:
 598                                         return -2;
 599                                 }
 600                         } else {
 601                                 choices.push_back (_("Cancel"));
 602                                 choices.push_back (_("Embed it anyway"));
 603
 604                                 Gtkmm2ext::Choice rate_choice (
 605                                         _("Sample rate"),
 606                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), path),
 607                                         choices, false
 608                                         );
 609
 610                                 int resx = rate_choice.run ();
 611
 612                                 switch (resx) {
 613                                 case 0: /* don't import */
 614                                         return -1;
 615                                 case 1: /* do it */
 616                                         break;
 617                                 default:
 618                                         return -2;
 619                                 }
 620                         }
 621                 }
 622
 623                 for (int n = 0; n < finfo.channels; ++n) {
 624
 625                         try {
 626
 627                                 /* check if we have this thing embedded already */
 628
 629                                 boost::shared_ptr<Source> s;
 630
 631                                 if ((s = _session->audio_source_by_path_and_channel (path, n)) == 0) {
 632
 633                                         source = boost::dynamic_pointer_cast<AudioFileSource> (
 634                                                 SourceFactory::createExternal (DataType::AUDIO, *_session,
 635                                                                                path, n,
 636                                                                                (mode == ImportAsTapeTrack
 637                                                                                 ? Source::Destructive
 638                                                                                 : Source::Flag (0)),
 639                                                                         true, true));
 640                                 } else {
 641                                         source = boost::dynamic_pointer_cast<AudioFileSource> (s);
 642                                 }
 643
 644                                 sources.push_back(source);
 645                         }
 646
 647                         catch (failed_constructor& err) {
 648                                 error << string_compose(_("could not open %1"), path) << endmsg;
 649                                 return -3;
 650                         }
 651
 652                         gtk_main_iteration();
 653                 }
 654         }
 655
 656         if (!sources.empty()) {
 657                 return add_sources (paths, sources, pos, disposition, mode, target_regions, target_tracks, track, true, instrument);
 658         }
 659
 660         return 0;
 661 }
 662
 663 int
 664 Editor::add_sources (vector<string>            paths,
 665                      SourceList&               sources,
 666                      framepos_t&               pos,
 667                      ImportDisposition         disposition,
 668                      ImportMode                mode,
 669                      int                       target_regions,
 670                      int                       target_tracks,
 671                      boost::shared_ptr<Track>& track,
 672                      bool                      /*add_channel_suffix*/,
 673                      ARDOUR::PluginInfoPtr     instrument)
 674 {
 675         vector<boost::shared_ptr<Region> > regions;
 676         string region_name;
 677         uint32_t input_chan = 0;
 678         uint32_t output_chan = 0;
 679         bool use_timestamp;
 680         vector<string> track_names;
 681
 682         use_timestamp = (pos == -1);
 683
 684         // kludge (for MIDI we're abusing "channel" for "track" here)
 685         if (SMFSource::safe_midi_file_extension (paths.front())) {
 686                 target_regions = -1;
 687         }
 688
 689         if (target_regions == 1) {
 690
 691                 /* take all the sources we have and package them up as a region */
 692
 693                 region_name = region_name_from_path (paths.front(), (sources.size() > 1), false);
 694
 695                 /* we checked in import_sndfiles() that there were not too many */
 696
 697                 while (RegionFactory::region_by_name (region_name)) {
 698                         region_name = bump_name_once (region_name, '.');
 699                 }
 700
 701                 PropertyList plist;
 702
 703                 plist.add (ARDOUR::Properties::start, 0);
 704                 plist.add (ARDOUR::Properties::length, sources[0]->length (pos));
 705                 plist.add (ARDOUR::Properties::name, region_name);
 706                 plist.add (ARDOUR::Properties::layer, 0);
 707                 plist.add (ARDOUR::Properties::whole_file, true);
 708                 plist.add (ARDOUR::Properties::external, true);
 709
 710                 boost::shared_ptr<Region> r = RegionFactory::create (sources, plist);
 711
 712                 if (use_timestamp && boost::dynamic_pointer_cast<AudioRegion>(r)) {
 713                         boost::dynamic_pointer_cast<AudioRegion>(r)->special_set_position(sources[0]->natural_position());
 714                 }
 715
 716                 regions.push_back (r);
 717
 718                 /* if we're creating a new track, name it after the cleaned-up
 719                  * and "merged" region name.
 720                  */
 721
 722                 track_names.push_back (region_name);
 723
 724         } else if (target_regions == -1 || target_regions > 1) {
 725
 726                 /* take each source and create a region for each one */
 727
 728                 SourceList just_one;
 729                 SourceList::iterator x;
 730                 uint32_t n;
 731
 732                 for (n = 0, x = sources.begin(); x != sources.end(); ++x, ++n) {
 733
 734                         just_one.clear ();
 735                         just_one.push_back (*x);
 736
 737                         boost::shared_ptr<FileSource> fs = boost::dynamic_pointer_cast<FileSource> (*x);
 738
 739                         if (sources.size() > 1 && disposition == ImportDistinctChannels) {
 740
 741                                 /* generate a per-channel region name so that things work as
 742                                  * intended
 743                                  */
 744
 745                                 string path;
 746
 747                                 if (fs) {
 748                                         region_name = basename_nosuffix (fs->path());
 749                                 } else {
 750                                         region_name = (*x)->name();
 751                                 }
 752
 753                                 if (sources.size() == 2) {
 754                                         if (n == 0) {
 755                                                 region_name += "-L";
 756                                         } else {
 757                                                 region_name += "-R";
 758                                         }
 759                                 } else if (sources.size() > 2) {
 760                                         region_name += string_compose ("-%1", n+1);
 761                                 }
 762
 763                                 track_names.push_back (region_name);
 764
 765                         } else {
 766                                 if (fs) {
 767                                         region_name = region_name_from_path (fs->path(), false, false, sources.size(), n);
 768                                 } else {
 769                                         region_name = (*x)->name();
 770                                 }
 771
 772                                 if (SMFSource::safe_midi_file_extension (paths.front())) {
 773                                         string track_name = string_compose ("%1-t%2", PBD::basename_nosuffix (fs->path()), (n + 1));
 774                                         track_names.push_back (track_name);
 775                                 } else {
 776                                         track_names.push_back (PBD::basename_nosuffix (paths[n]));
 777                                 }
 778                         }
 779
 780                         PropertyList plist;
 781
 782                         /* Fudge region length to ensure it is non-zero; make it 1 beat at 120bpm
 783                            for want of a better idea.  It can't be too small, otherwise if this
 784                            is a MIDI region the conversion from frames -> beats -> frames will
 785                            round it back down to 0 again.
 786                         */
 787                         framecnt_t len = (*x)->length (pos);
 788                         if (len == 0) {
 789                                 len = (60.0 / 120.0) * _session->frame_rate ();
 790                         }
 791
 792                         plist.add (ARDOUR::Properties::start, 0);
 793                         plist.add (ARDOUR::Properties::length, len);
 794                         plist.add (ARDOUR::Properties::name, region_name);
 795                         plist.add (ARDOUR::Properties::layer, 0);
 796                         plist.add (ARDOUR::Properties::whole_file, true);
 797                         plist.add (ARDOUR::Properties::external, true);
 798
 799                         boost::shared_ptr<Region> r = RegionFactory::create (just_one, plist);
 800
 801                         if (use_timestamp && boost::dynamic_pointer_cast<AudioRegion>(r)) {
 802                                 boost::dynamic_pointer_cast<AudioRegion>(r)->special_set_position((*x)->natural_position());
 803                         }
 804
 805                         regions.push_back (r);
 806                 }
 807         }
 808
 809         if (target_regions == 1) {
 810                 input_chan = regions.front()->n_channels();
 811         } else {
 812                 if (target_tracks == 1) {
 813                         input_chan = regions.size();
 814                 } else {
 815                         input_chan = 1;
 816                 }
 817         }
 818
 819         if (Config->get_output_auto_connect() & AutoConnectMaster) {
 820                 output_chan = (_session->master_out() ? _session->master_out()->n_inputs().n_audio() : input_chan);
 821         } else {
 822                 output_chan = input_chan;
 823         }
 824
 825         int n = 0;
 826         framepos_t rlen = 0;
 827
 828         begin_reversible_command (Operations::insert_file);
 829
 830         /* we only use tracks names when importing to new tracks, but we
 831          * require that one is defined for every region, just to keep
 832          * the API simpler.
 833          */
 834         assert (regions.size() == track_names.size());
 835
 836         for (vector<boost::shared_ptr<Region> >::iterator r = regions.begin(); r != regions.end(); ++r, ++n) {
 837                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (*r);
 838
 839                 if (use_timestamp) {
 840                         if (ar) {
 841
 842                                 /* get timestamp for this region */
 843
 844                                 const boost::shared_ptr<Source> s (ar->sources().front());
 845                                 const boost::shared_ptr<AudioSource> as = boost::dynamic_pointer_cast<AudioSource> (s);
 846
 847                                 assert (as);
 848
 849                                 if (as->natural_position() != 0) {
 850                                         pos = as->natural_position();
 851                                 } else if (target_tracks == 1) {
 852                                         /* hmm, no timestamp available, put it after the previous region
 853                                          */
 854                                         if (n == 0) {
 855                                                 pos = get_preferred_edit_position ();
 856                                         } else {
 857                                                 pos += rlen;
 858                                         }
 859                                 } else {
 860                                         pos = get_preferred_edit_position ();
 861                                 }
 862                         } else {
 863                                 /* should really get first position in MIDI file, but for now, use edit position*/
 864                                 pos = get_preferred_edit_position ();
 865                         }
 866                 }
 867
 868                 finish_bringing_in_material (*r, input_chan, output_chan, pos, mode, track, track_names[n], instrument);
 869
 870                 rlen = (*r)->length();
 871
 872                 if (target_tracks != 1) {
 873                         track.reset ();
 874                 } else {
 875                         if (!use_timestamp || !ar) {
 876                                 /* line each one up right after the other */
 877                                 pos += (*r)->length();
 878                         }
 879                 }
 880         }
 881
 882         commit_reversible_command ();
 883
 884         /* setup peak file building in another thread */
 885
 886         for (SourceList::iterator x = sources.begin(); x != sources.end(); ++x) {
 887                 SourceFactory::setup_peakfile (*x, true);
 888         }
 889
 890         return 0;
 891 }
 892
 893 int
 894 Editor::finish_bringing_in_material (boost::shared_ptr<Region> region,
 895                                      uint32_t                  in_chans,
 896                                      uint32_t                  out_chans,
 897                                      framepos_t&               pos,
 898                                      ImportMode                mode,
 899                                      boost::shared_ptr<Track>& existing_track,
 900                                      const string&             new_track_name,
 901                                      ARDOUR::PluginInfoPtr     instrument)
 902 {
 903         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
 904         boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
 905
 906         switch (mode) {
 907         case ImportAsRegion:
 908                 /* relax, its been done */
 909                 break;
 910
 911         case ImportToTrack:
 912         {
 913                 if (!existing_track) {
 914
 915                         if (ar) {
 916                                 existing_track = get_nth_selected_audio_track (0);
 917                         } else if (mr) {
 918                                 existing_track = get_nth_selected_midi_track (0);
 919                         }
 920
 921                         if (!existing_track) {
 922                                 return -1;
 923                         }
 924                 }
 925
 926                 boost::shared_ptr<Playlist> playlist = existing_track->playlist();
 927                 boost::shared_ptr<Region> copy (RegionFactory::create (region, region->properties()));
 928                 playlist->clear_changes ();
 929                 playlist->add_region (copy, pos);
 930                 if (Config->get_edit_mode() == Ripple)
 931                         playlist->ripple (pos, copy->length(), copy);
 932
 933                 _session->add_command (new StatefulDiffCommand (playlist));
 934                 break;
 935         }
 936
 937         case ImportAsTrack:
 938         {
 939                 if (!existing_track) {
 940                         if (ar) {
 941                                 list<boost::shared_ptr<AudioTrack> > at (_session->new_audio_track (in_chans, out_chans, 0, 1, string(), PresentationInfo::max_order, Normal));
 942
 943                                 if (at.empty()) {
 944                                         return -1;
 945                                 }
 946                                 if (Config->get_strict_io ()) {
 947                                         for (list<boost::shared_ptr<AudioTrack> >::iterator i = at.begin(); i != at.end(); ++i) {
 948                                                 (*i)->set_strict_io (true);
 949                                         }
 950                                 }
 951
 952                                 existing_track = at.front();
 953                         } else if (mr) {
 954                                 list<boost::shared_ptr<MidiTrack> > mt (
 955                                         _session->new_midi_track (ChanCount (DataType::MIDI, 1),
 956                                                                   ChanCount (DataType::MIDI, 1),
 957                                                                   instrument, (Plugin::PresetRecord*) 0,
 958                                                                   (RouteGroup*) 0,
 959                                                                   1,
 960                                                                   string(),
 961                                                                   PresentationInfo::max_order));
 962
 963                                 if (mt.empty()) {
 964                                         return -1;
 965                                 }
 966                                 if (Config->get_strict_io ()) {
 967                                         for (list<boost::shared_ptr<MidiTrack> >::iterator i = mt.begin(); i != mt.end(); ++i) {
 968                                                 (*i)->set_strict_io (true);
 969                                         }
 970                                 }
 971
 972                                 // TODO set strict_io from preferences
 973                                 existing_track = mt.front();
 974                         }
 975
 976                         if (!new_track_name.empty()) {
 977                                 existing_track->set_name (new_track_name);
 978                         } else {
 979                                 existing_track->set_name (region->name());
 980                         }
 981                 }
 982
 983                 boost::shared_ptr<Playlist> playlist = existing_track->playlist();
 984                 boost::shared_ptr<Region> copy (RegionFactory::create (region, true));
 985                 playlist->clear_changes ();
 986                 playlist->add_region (copy, pos);
 987                 _session->add_command (new StatefulDiffCommand (playlist));
 988                 break;
 989         }
 990
 991         case ImportAsTapeTrack:
 992         {
 993                 if (!ar) {
 994                         return -1;
 995                 }
 996
 997                 list<boost::shared_ptr<AudioTrack> > at (_session->new_audio_track (in_chans, out_chans, 0, 1, string(), PresentationInfo::max_order, Destructive));
 998                 if (!at.empty()) {
 999                         boost::shared_ptr<Playlist> playlist = at.front()->playlist();
1000                         boost::shared_ptr<Region> copy (RegionFactory::create (region, true));
1001                         playlist->clear_changes ();
1002                         playlist->add_region (copy, pos);
1003                         _session->add_command (new StatefulDiffCommand (playlist));
1004                 }
1005                 if (Config->get_strict_io ()) {
1006                         for (list<boost::shared_ptr<AudioTrack> >::iterator i = at.begin(); i != at.end(); ++i) {
1007                                 (*i)->set_strict_io (true);
1008                         }
1009                 }
1010                 break;
1011         }
1012         }
1013
1014         return 0;
1015 }
1016
1017 void *
1018 Editor::_import_thread (void *arg)
1019 {
1020         SessionEvent::create_per_thread_pool ("import events", 64);
1021
1022         Editor *ed = (Editor *) arg;
1023         return ed->import_thread ();
1024 }
1025
1026 void *
1027 Editor::import_thread ()
1028 {
1029         _session->import_files (import_status);
1030         return 0;
1031 }