the edit cursor is dead, long live the edit point; plus a few fixes; plus location...
[ardour.git] / 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
26 #include <sndfile.h>
27
28 #include <pbd/pthread_utils.h>
29 #include <pbd/basename.h>
30 #include <pbd/shortpath.h>
31
32 #include <gtkmm2ext/choice.h>
33 #include <gtkmm2ext/window_title.h>
34
35 #include <ardour/session.h>
36 #include <ardour/audioplaylist.h>
37 #include <ardour/audioregion.h>
38 #include <ardour/audio_diskstream.h>
39 #include <ardour/utils.h>
40 #include <ardour/audio_track.h>
41 #include <ardour/audioplaylist.h>
42 #include <ardour/audiofilesource.h>
43 #include <ardour/region_factory.h>
44 #include <ardour/source_factory.h>
45 #include <pbd/memento_command.h>
46
47 #include "ardour_ui.h"
48 #include "editor.h"
49 #include "sfdb_ui.h"
50 #include "editing.h"
51 #include "audio_time_axis.h"
52 #include "utils.h"
53
54 #include "i18n.h"
55
56 using namespace std;
57 using namespace ARDOUR;
58 using namespace PBD;
59 using namespace sigc;
60 using namespace Gtk;
61 using namespace Gtkmm2ext;
62 using namespace Editing;
63 using Glib::ustring;
64
65 /* Functions supporting the incorporation of external (non-captured) audio material into ardour */
66
67 void
68 Editor::add_external_audio_action (ImportMode mode_hint)
69 {
70         if (session == 0) {
71                 MessageDialog msg (0, _("You can't import or embed an audiofile until you have a session loaded."));
72                 msg.run ();
73                 return;
74         }
75         
76         if (sfbrowser == 0) {
77                 sfbrowser = new SoundFileOmega (*this, _("Add existing audio"), session, 0, true, mode_hint);
78         } else {
79                 sfbrowser->set_mode (mode_hint);
80         }
81
82         external_audio_dialog ();
83 }
84
85 void
86 Editor::external_audio_dialog ()
87 {
88         vector<Glib::ustring> paths;
89         uint32_t track_cnt;
90
91         if (session == 0) {
92                 MessageDialog msg (0, _("You can't import or embed an audiofile until you have a session loaded."));
93                 msg.run ();
94                 return;
95         }
96         
97         track_cnt = 0;
98
99         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
100                 AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*>(*x);
101                 
102                 if (!atv) {
103                         continue;
104                 } else if (atv->is_audio_track()) {
105                         track_cnt++;
106                 }
107         }
108
109         if (sfbrowser == 0) {
110                 sfbrowser = new SoundFileOmega (*this, _("Add existing audio"), session, track_cnt, true);
111         } else {
112                 sfbrowser->reset (track_cnt);
113         }
114
115         sfbrowser->show_all ();
116
117   again:
118         int response = sfbrowser->run ();
119
120         switch (response) {
121         case RESPONSE_APPLY:
122                 // leave the dialog open
123                 break;
124
125         case RESPONSE_OK:
126                 sfbrowser->hide ();
127                 break;
128
129         default:
130                 // cancel from the browser - we are done
131                 sfbrowser->hide ();
132                 return;
133         }
134
135         /* lets do it */
136         
137         paths = sfbrowser->get_paths ();
138
139         ImportPosition pos = sfbrowser->get_position ();
140         ImportMode mode = sfbrowser->get_mode ();
141         ImportDisposition chns = sfbrowser->get_channel_disposition ();
142         nframes64_t where;
143
144         switch (pos) {
145         case ImportAtEditPoint:
146                 where = get_preferred_edit_position ();
147                 break;
148         case ImportAtTimestamp:
149                 where = -1;
150                 break;
151         case ImportAtPlayhead:
152                 where = playhead_cursor->current_frame;
153                 break;
154         case ImportAtStart:
155                 where = session->current_start_frame();
156                 break;
157         }
158
159         if (where < 0) {
160                 return;
161         }
162
163         SrcQuality quality = sfbrowser->get_src_quality();
164
165         if (sfbrowser->copy_files_btn.get_active()) {
166                 do_import (paths, chns, mode, quality, where);
167         } else {
168                 do_embed (paths, chns, mode, where);
169         }
170
171         if (response == RESPONSE_APPLY) {
172                 sfbrowser->clear_selection ();
173                 goto again;
174         }
175 }
176
177 boost::shared_ptr<AudioTrack>
178 Editor::get_nth_selected_audio_track (int nth) const
179 {
180         AudioTimeAxisView* atv;
181         TrackSelection::iterator x;
182         
183         for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
184
185                 atv = dynamic_cast<AudioTimeAxisView*>(*x);
186                 
187                 if (!atv) {
188                         continue;
189                 } else if (atv->is_audio_track()) {
190                         --nth;
191                 }
192         }
193         
194         if (x == selection->tracks.end()) {
195                 atv = dynamic_cast<AudioTimeAxisView*>(selection->tracks.back());
196         } else {
197                 atv = dynamic_cast<AudioTimeAxisView*>(*x);
198         }
199         
200         if (!atv || !atv->is_audio_track()) {
201                 return boost::shared_ptr<AudioTrack>();
202         }
203         
204         return atv->audio_track();
205 }       
206
207 void
208 Editor::do_import (vector<ustring> paths, ImportDisposition chns, ImportMode mode, SrcQuality quality, nframes64_t& pos)
209 {
210         boost::shared_ptr<AudioTrack> track;
211         vector<ustring> to_import;
212         bool ok = false;
213         int nth = 0;
214
215         if (interthread_progress_window == 0) {
216                 build_interthread_progress_window ();
217         }
218
219         switch (chns) {
220         case Editing::ImportDistinctFiles:
221                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
222
223                         to_import.clear ();
224                         to_import.push_back (*a);
225
226                         if (mode == Editing::ImportToTrack) {
227                                 track = get_nth_selected_audio_track (nth++);
228                         }
229                         
230                         if (import_sndfiles (to_import, mode, quality, pos, 1, -1, track)) {
231                                 goto out;
232                         }
233
234                 }
235                 break;
236
237         case Editing::ImportDistinctChannels:
238                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
239
240                         to_import.clear ();
241                         to_import.push_back (*a);
242
243                         if (import_sndfiles (to_import, mode, quality, pos, -1, -1, track)) {
244                                 goto out;
245                         }
246
247                 }
248                 break;
249
250         case Editing::ImportMergeFiles:
251                 /* create 1 region from all paths, add to 1 track,
252                    ignore "track"
253                 */
254                 if (import_sndfiles (paths, mode, quality, pos, 1, 1, track)) {
255                         goto out;
256                 }
257                 break;
258
259         case Editing::ImportSerializeFiles:
260                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
261
262                         to_import.clear ();
263                         to_import.push_back (*a);
264                         
265                         /* create 1 region from this path, add to 1 track,
266                            reuse "track" across paths
267                         */
268
269                         if (import_sndfiles (to_import, mode, quality, pos, 1, 1, track)) {
270                                 goto out;
271                         }
272
273                 }
274                 break;
275         }
276
277         ok = true;
278         
279   out:  
280         if (ok) {
281                 session->save_state ("");
282         }
283
284         interthread_progress_window->hide_all ();
285 }
286
287 bool
288 Editor::idle_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
289 {
290         _do_embed (paths, chns, mode, pos);
291         return false;
292 }
293
294 void
295 Editor::do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
296 {
297 #ifdef GTKOSX
298         Glib::signal_idle().connect (bind (mem_fun (*this, &Editor::idle_do_embed), paths, chns, mode, pos));
299 #else
300         _do_embed (paths, chns, mode, pos);
301 #endif
302 }
303
304 void
305 Editor::_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
306 {
307         boost::shared_ptr<AudioTrack> track;
308         bool check_sample_rate = true;
309         bool ok = false;
310         vector<ustring> to_embed;
311         bool multi = paths.size() > 1;
312         int nth = 0;
313
314         switch (chns) {
315         case Editing::ImportDistinctFiles:
316                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
317
318                         to_embed.clear ();
319                         to_embed.push_back (*a);
320
321                         if (mode == Editing::ImportToTrack) {
322                                 track = get_nth_selected_audio_track (nth++);
323                         }
324
325                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, 1, -1, track) < -1) {
326                                 goto out;
327                         }
328                 }
329                 break;
330                 
331         case Editing::ImportDistinctChannels:
332                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
333
334                         to_embed.clear ();
335                         to_embed.push_back (*a);
336
337                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, -1, -1, track) < -1) {
338                                 goto out;
339                         }
340                 }
341                 break;
342
343         case Editing::ImportMergeFiles:
344                 if (embed_sndfiles (paths, multi, check_sample_rate, mode, pos, 1, 1, track) < -1) {
345                         goto out;
346                 }
347         break;
348
349         case Editing::ImportSerializeFiles:
350                 for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
351
352                         to_embed.clear ();
353                         to_embed.push_back (*a);
354
355                         if (embed_sndfiles (to_embed, multi, check_sample_rate, mode, pos, 1, 1, track) < -1) {
356                                 goto out;
357                         }
358                 }
359                 break;
360         }
361
362         ok = true;
363         
364   out:  
365         if (ok) {
366                 session->save_state ("");
367         }
368 }
369
370 int
371 Editor::import_sndfiles (vector<ustring> paths, ImportMode mode, SrcQuality quality, nframes64_t& pos, 
372                          int target_regions, int target_tracks, boost::shared_ptr<AudioTrack>& track)
373 {
374         WindowTitle title = string_compose (_("importing %1"), paths.front());
375
376         interthread_progress_window->set_title (title.get_string());
377         interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
378         interthread_progress_window->show_all ();
379         interthread_progress_bar.set_fraction (0.0f);
380         interthread_cancel_label.set_text (_("Cancel Import"));
381         current_interthread_info = &import_status;
382
383         import_status.paths = paths;
384         import_status.done = false;
385         import_status.cancel = false;
386         import_status.freeze = false;
387         import_status.done = 0.0;
388         import_status.quality = quality;
389
390         interthread_progress_connection = Glib::signal_timeout().connect 
391                 (bind (mem_fun(*this, &Editor::import_progress_timeout), (gpointer) 0), 100);
392         
393         track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
394         ARDOUR_UI::instance()->flush_pending ();
395
396         /* start import thread for this spec. this will ultimately call Session::import_audiofile()
397            and if successful will add the file(s) as a region to the session region list.
398         */
399         
400         pthread_create_and_store ("import", &import_status.thread, 0, _import_thread, this);
401         pthread_detach (import_status.thread);
402         
403         while (!(import_status.done || import_status.cancel)) {
404                 gtk_main_iteration ();
405         }
406
407         interthread_progress_window->hide ();
408         
409         import_status.done = true;
410         interthread_progress_connection.disconnect ();
411         
412         /* import thread finished - see if we should build a new track */
413
414         boost::shared_ptr<AudioRegion> r;
415         
416         if (import_status.cancel || import_status.sources.empty()) {
417                 goto out;
418         }
419
420         if (add_sources (paths, import_status.sources, pos, mode, target_regions, target_tracks, track, false) == 0) {
421                 session->save_state ("");
422         }
423
424   out:
425         track_canvas.get_window()->set_cursor (*current_canvas_cursor);
426         return 0;
427 }
428
429 int
430 Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
431                         bool& check_sample_rate, ImportMode mode, nframes64_t& pos, int target_regions, int target_tracks,
432                         boost::shared_ptr<AudioTrack>& track)
433 {
434         boost::shared_ptr<AudioFileSource> source;
435         SourceList sources;
436         string linked_path;
437         SoundFileInfo finfo;
438         int ret = 0;
439
440         track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
441         ARDOUR_UI::instance()->flush_pending ();
442
443         for (vector<Glib::ustring>::iterator p = paths.begin(); p != paths.end(); ++p) {
444
445                 ustring path = *p;
446
447                 /* lets see if we can link it into the session */
448                 
449                 linked_path = session->sound_dir();
450                 linked_path += '/';
451                 linked_path += Glib::path_get_basename (path);
452                 
453                 if (link (path.c_str(), linked_path.c_str()) == 0) {
454
455                         /* there are many reasons why link(2) might have failed.
456                            but if it succeeds, we now have a link in the
457                            session sound dir that will protect against
458                            unlinking of the original path. nice.
459                         */
460                         
461                         path = linked_path;
462
463                 } else {
464
465                         /* one possible reason is that its already linked */
466
467                         if (errno == EEXIST) {
468                                 struct stat sb;
469
470                                 if (stat (linked_path.c_str(), &sb) == 0) {
471                                         if (sb.st_nlink > 1) { // its a hard link, assume its the one we want
472                                                 path = linked_path;
473                                         }
474                                 }
475                         }
476                 }
477                 
478                 /* note that we temporarily truncated _id at the colon */
479                 
480                 string error_msg;
481
482                 if (!AudioFileSource::get_soundfile_info (path, finfo, error_msg)) {
483                         error << string_compose(_("Editor: cannot open file \"%1\", (%2)"), path, error_msg ) << endmsg;
484                         goto out;
485                 }
486                 
487                 if (check_sample_rate  && (finfo.samplerate != (int) session->frame_rate())) {
488                         vector<string> choices;
489                         
490                         if (multifile) {
491                                 choices.push_back (_("Cancel entire import"));
492                                 choices.push_back (_("Don't embed it"));
493                                 choices.push_back (_("Embed all without questions"));
494                         
495                                 Gtkmm2ext::Choice rate_choice (
496                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), 
497                                                         short_path (path, 40)),
498                                         choices, false);
499                                 
500                                 int resx = rate_choice.run ();
501                                 
502                                 switch (resx) {
503                                 case 0: /* stop a multi-file import */
504                                         ret = -2;
505                                         goto out;
506                                 case 1: /* don't embed this one */
507                                         ret = -1;
508                                         goto out;
509                                 case 2: /* do it, and the rest without asking */
510                                         check_sample_rate = false;
511                                         break;
512                                 case 3: /* do it */
513                                         break;
514                                 default:
515                                         ret = -2;
516                                         goto out;
517                                 }
518                         } else {
519                                 choices.push_back (_("Cancel"));
520                                 choices.push_back (_("Embed it anyway"));
521                         
522                                 Gtkmm2ext::Choice rate_choice (
523                                         string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), path),
524                                         choices, false);
525                                 
526                                 int resx = rate_choice.run ();
527                                 
528                                 switch (resx) {
529                                 case 0: /* don't import */
530                                         ret = -1;
531                                         goto out;
532                                 case 1: /* do it */
533                                         break;
534                                 default:
535                                         ret = -2;
536                                         goto out;
537                                 }
538                         }
539                 }
540                 
541                 track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
542
543                 for (int n = 0; n < finfo.channels; ++n) {
544                         try {
545
546                                 /* check if we have this thing embedded already */
547
548                                 boost::shared_ptr<Source> s;
549
550                                 if ((s = session->source_by_path_and_channel (path, n)) == 0) {
551                                         source = boost::dynamic_pointer_cast<AudioFileSource> (SourceFactory::createReadable 
552                                                                                                (*session, path,  n,
553                                                                                                 (mode == ImportAsTapeTrack ? 
554                                                                                                  AudioFileSource::Destructive : 
555                                                                                                  AudioFileSource::Flag (0)),
556                                                                                                 true, true));
557                                 } else {
558                                         source = boost::dynamic_pointer_cast<AudioFileSource> (s);
559                                 }
560
561                                 sources.push_back(source);
562                         } 
563                         
564                         catch (failed_constructor& err) {
565                                 error << string_compose(_("could not open %1"), path) << endmsg;
566                                 goto out;
567                         }
568                         
569                         ARDOUR_UI::instance()->flush_pending ();
570                 }
571         }
572
573         if (sources.empty()) {
574                 goto out;
575         }
576
577         ret = add_sources (paths, sources, pos, mode, target_regions, target_tracks, track, true);
578
579   out:
580         track_canvas.get_window()->set_cursor (*current_canvas_cursor);
581         return ret;
582 }
583
584 int
585 Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64_t& pos, ImportMode mode, 
586                      int target_regions, int target_tracks, boost::shared_ptr<AudioTrack>& track, bool add_channel_suffix)
587 {
588         vector<boost::shared_ptr<AudioRegion> > regions;
589         ustring region_name;
590         uint32_t input_chan = 0;
591         uint32_t output_chan = 0;
592
593         if (pos == -1) { // "use timestamp"
594                 if (sources[0]->natural_position() != 0) {
595                         pos = sources[0]->natural_position();
596                 } else {
597                         // XXX is this the best alternative ?
598                         pos = get_preferred_edit_position ();
599                 }
600         }
601
602         if (target_regions == 1) {
603
604                 /* take all the sources we have and package them up as a region */
605
606                 region_name = region_name_from_path (paths.front(), (sources.size() > 1), false);
607                 
608                 regions.push_back (boost::dynamic_pointer_cast<AudioRegion> 
609                                    (RegionFactory::create (sources, 0, sources[0]->length(), region_name, 0,
610                                                            Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External))));
611                 
612         } else if (target_regions == -1) {
613
614                 /* take each source and create a region for each one */
615
616                 SourceList just_one;
617                 SourceList::iterator x;
618                 uint32_t n;
619
620                 for (n = 0, x = sources.begin(); x != sources.end(); ++x, ++n) {
621
622                         just_one.clear ();
623                         just_one.push_back (*x);
624                         
625                         boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*x);
626
627                         region_name = region_name_from_path (afs->path(), false, true, sources.size(), n);
628
629                         regions.push_back (boost::dynamic_pointer_cast<AudioRegion> 
630                                            (RegionFactory::create (just_one, 0, (*x)->length(), region_name, 0,
631                                                                    Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External))));
632
633                 }
634         }
635
636         if (target_regions == 1) {
637                 input_chan = regions.front()->n_channels();
638         } else {
639                 if (target_tracks == 1) {
640                         input_chan = regions.size();
641                 } else {
642                         input_chan = 1;
643                 }
644         }
645
646         if (Config->get_output_auto_connect() & AutoConnectMaster) {
647                 output_chan = (session->master_out() ? session->master_out()->n_inputs() : input_chan);
648         } else {
649                 output_chan = input_chan;
650         }
651
652         int n = 0;
653
654         for (vector<boost::shared_ptr<AudioRegion> >::iterator r = regions.begin(); r != regions.end(); ++r, ++n) {
655
656                 finish_bringing_in_audio (*r, input_chan, output_chan, pos, mode, track);
657
658                 if (target_tracks != 1) {
659                         track.reset ();
660                 } else {
661                         pos += (*r)->length();
662                 } 
663         }
664
665         /* setup peak file building in another thread */
666
667         for (SourceList::iterator x = sources.begin(); x != sources.end(); ++x) {
668                 SourceFactory::setup_peakfile (*x, true);
669         }
670
671         return 0;
672 }
673         
674 int
675 Editor::finish_bringing_in_audio (boost::shared_ptr<AudioRegion> region, uint32_t in_chans, uint32_t out_chans, nframes64_t& pos, 
676                                   ImportMode mode, boost::shared_ptr<AudioTrack>& existing_track)
677 {
678         switch (mode) {
679         case ImportAsRegion:
680                 /* relax, its been done */
681                 break;
682                 
683         case ImportToTrack:
684         {
685                 if (!existing_track) {
686
687                         existing_track = get_nth_selected_audio_track (0);
688
689                         if (!existing_track) {
690                                 return -1;
691                         }
692                 }
693
694                 boost::shared_ptr<Playlist> playlist = existing_track->diskstream()->playlist();
695                 boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
696                 begin_reversible_command (_("insert sndfile"));
697                 XMLNode &before = playlist->get_state();
698                 playlist->add_region (copy, pos);
699                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
700                 commit_reversible_command ();
701                 break;
702         }
703
704         case ImportAsTrack:
705         { 
706                 if (!existing_track) {
707                         list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Normal, 1));
708
709                         if (at.empty()) {
710                                 return -1;
711                         }
712
713                         existing_track = at.front();
714                         existing_track->set_name (region->name(), this);
715                 }
716
717                 boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
718                 existing_track->diskstream()->playlist()->add_region (copy, pos);
719                 break;
720         }
721
722
723         case ImportAsTapeTrack:
724         {
725                 list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Destructive));
726                 if (!at.empty()) {
727                         boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
728                         at.front()->set_name (basename_nosuffix (copy->name()), this);
729                         at.front()->diskstream()->playlist()->add_region (copy, pos);
730                 }
731                 break;
732         }
733         }
734
735         return 0;
736 }
737
738 void *
739 Editor::_import_thread (void *arg)
740 {
741         PBD::ThreadCreated (pthread_self(), X_("Import"));
742
743         Editor *ed = (Editor *) arg;
744         return ed->import_thread ();
745 }
746
747 void *
748 Editor::import_thread ()
749 {
750         session->import_audiofile (import_status);
751         pthread_exit_pbd (0);
752         /*NOTREACHED*/
753         return 0;
754 }
755
756 gint
757 Editor::import_progress_timeout (void *arg)
758 {
759         interthread_progress_label.set_text (import_status.doing_what);
760
761         if (import_status.freeze) {
762                 interthread_cancel_button.set_sensitive(false);
763         } else {
764                 interthread_cancel_button.set_sensitive(true);
765         }
766
767         if (import_status.doing_what == "building peak files") {
768                 interthread_progress_bar.pulse ();
769                 return FALSE;
770         } else {
771                 interthread_progress_bar.set_fraction (import_status.progress);
772         }
773
774         return !(import_status.done || import_status.cancel);
775 }
776