timecode clock info patch from oofus, big clock mods from oofus, rec-sensitive color...
[ardour.git] / gtk2_ardour / ardour_ui.cc
1 /*
2     Copyright (C) 1999-2002 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     $Id$
19 */
20
21 #include <algorithm>
22 #include <cmath>
23 #include <fcntl.h>
24 #include <signal.h>
25 #include <unistd.h>
26 #include <cerrno>
27 #include <fstream>
28
29 #include <iostream>
30
31 #include <gtkmm/messagedialog.h>
32 #include <gtkmm/accelmap.h>
33
34 #include <pbd/error.h>
35 #include <pbd/compose.h>
36 #include <pbd/pathscanner.h>
37 #include <pbd/failed_constructor.h>
38 #include <gtkmm2ext/gtk_ui.h>
39 #include <gtkmm2ext/utils.h>
40 #include <gtkmm2ext/click_box.h>
41 #include <gtkmm2ext/fastmeter.h>
42 #include <gtkmm2ext/stop_signal.h>
43 #include <gtkmm2ext/popup.h>
44
45 #include <midi++/port.h>
46 #include <midi++/mmc.h>
47
48 #include <ardour/ardour.h>
49 #include <ardour/session_route.h>
50 #include <ardour/port.h>
51 #include <ardour/audioengine.h>
52 #include <ardour/playlist.h>
53 #include <ardour/utils.h>
54 #include <ardour/audio_diskstream.h>
55 #include <ardour/audiofilesource.h>
56 #include <ardour/recent_sessions.h>
57 #include <ardour/port.h>
58 #include <ardour/audio_track.h>
59
60 #include "actions.h"
61 #include "ardour_ui.h"
62 #include "public_editor.h"
63 #include "audio_clock.h"
64 #include "keyboard.h"
65 #include "mixer_ui.h"
66 #include "prompter.h"
67 #include "opts.h"
68 #include "keyboard_target.h"
69 #include "add_route_dialog.h"
70 #include "new_session_dialog.h"
71 #include "about.h"
72 #include "utils.h"
73 #include "gui_thread.h"
74 #include "color_manager.h"
75
76 #include "i18n.h"
77
78 using namespace ARDOUR;
79 using namespace PBD;
80 using namespace Gtkmm2ext;
81 using namespace Gtk;
82 using namespace sigc;
83
84 ARDOUR_UI *ARDOUR_UI::theArdourUI = 0;
85
86 sigc::signal<void,bool> ARDOUR_UI::Blink;
87 sigc::signal<void>      ARDOUR_UI::RapidScreenUpdate;
88 sigc::signal<void>      ARDOUR_UI::SuperRapidScreenUpdate;
89 sigc::signal<void,nframes_t> ARDOUR_UI::Clock;
90
91 ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], string rcfile)
92
93         : Gtkmm2ext::UI ("ardour", argcp, argvp, rcfile),
94           
95           primary_clock (X_("TransportClockDisplay"), true, false, true),
96           secondary_clock (X_("SecondaryClockDisplay"), true, false, true),
97           preroll_clock (X_("PreRollClock"), true, true),
98           postroll_clock (X_("PostRollClock"), true, true),
99
100           /* adjuster table */
101
102           adjuster_table (3, 3),
103
104           /* preroll stuff */
105
106           preroll_button (_("pre\nroll")),
107           postroll_button (_("post\nroll")),
108
109           /* big clock */
110
111           big_clock ("BigClockNonRecording", true, false, true),
112
113           /* transport */
114
115           time_master_button (_("time\nmaster")),
116
117           shuttle_units_button (_("% ")),
118
119           punch_in_button (_("Punch In")),
120           punch_out_button (_("Punch Out")),
121           auto_return_button (_("Auto Return")),
122           auto_play_button (_("Autuo Play")),
123           auto_input_button (_("Auto Input")),
124           click_button (_("Click")),
125           auditioning_alert_button (_("AUDITION")),
126           solo_alert_button (_("SOLO")),
127           shown_flag (false)
128 {
129         using namespace Gtk::Menu_Helpers;
130
131         Gtkmm2ext::init();
132         
133         about = 0;
134
135         if (theArdourUI == 0) {
136                 theArdourUI = this;
137         }
138
139         /* load colors */
140
141         color_manager = new ColorManager();
142
143         std::string color_file = ARDOUR::find_config_file("ardour.colors");
144
145         color_manager->load (color_file);
146
147         editor = 0;
148         mixer = 0;
149         session = 0;
150         _session_is_new = false;
151         big_clock_window = 0;
152         session_selector_window = 0;
153         last_key_press_time = 0;
154         connection_editor = 0;
155         add_route_dialog = 0;
156         route_params = 0;
157         option_editor = 0;
158         location_ui = 0;
159         sfdb = 0;
160         open_session_selector = 0;
161         have_configure_timeout = false;
162         have_disk_overrun_displayed = false;
163         have_disk_underrun_displayed = false;
164         _will_create_new_session_automatically = false;
165         session_loaded = false;
166         last_speed_displayed = -1.0f;
167
168         last_configure_time.tv_sec = 0;
169         last_configure_time.tv_usec = 0;
170
171         shuttle_grabbed = false;
172         shuttle_fract = 0.0;
173         shuttle_max_speed = 8.0f;
174
175         shuttle_style_menu = 0;
176         shuttle_unit_menu = 0;
177
178         gettimeofday (&last_peak_grab, 0);
179         gettimeofday (&last_shuttle_request, 0);
180
181         ARDOUR::Diskstream::DiskOverrun.connect (mem_fun(*this, &ARDOUR_UI::disk_overrun_handler));
182         ARDOUR::Diskstream::DiskUnderrun.connect (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
183
184         /* handle pending state with a dialog */
185
186         ARDOUR::Session::AskAboutPendingState.connect (mem_fun(*this, &ARDOUR_UI::pending_state_dialog));
187
188         /* have to wait for AudioEngine and Configuration before proceeding */
189 }
190
191 void
192 ARDOUR_UI::set_engine (AudioEngine& e)
193 {
194         engine = &e;
195
196         engine->Stopped.connect (mem_fun(*this, &ARDOUR_UI::engine_stopped));
197         engine->Running.connect (mem_fun(*this, &ARDOUR_UI::engine_running));
198         engine->Halted.connect (mem_fun(*this, &ARDOUR_UI::engine_halted));
199         engine->SampleRateChanged.connect (mem_fun(*this, &ARDOUR_UI::update_sample_rate));
200
201         ActionManager::init ();
202         new_session_dialog = new NewSessionDialog();
203
204         _tooltips.enable();
205
206         keyboard = new Keyboard;
207
208         if (setup_windows ()) {
209                 throw failed_constructor ();
210         }
211
212         if (GTK_ARDOUR::show_key_actions) {
213                 vector<string> names;
214                 vector<string> paths;
215                 vector<string> keys;
216                 vector<AccelKey> bindings;
217
218                 ActionManager::get_all_actions (names, paths, keys, bindings);
219
220                 vector<string>::iterator n;
221                 vector<string>::iterator k;
222                 for (n = names.begin(), k = keys.begin(); n != names.end(); ++n, ++k) {
223                         cerr << "Action: " << (*n) << " bound to " << (*k) << endl;
224                 }
225
226                 exit (0);
227         }
228
229         /* start with timecode, metering enabled
230         */
231         
232         blink_timeout_tag = -1;
233
234         /* the global configuration object is now valid */
235
236         use_config ();
237
238         /* this being a GUI and all, we want peakfiles */
239
240         AudioFileSource::set_build_peakfiles (true);
241         AudioFileSource::set_build_missing_peakfiles (true);
242
243         if (AudioSource::start_peak_thread ()) {
244                 throw failed_constructor();
245         }
246
247         /* start the time-of-day-clock */
248         
249         update_wall_clock ();
250         Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::update_wall_clock), 60000);
251
252         update_disk_space ();
253         update_cpu_load ();
254         update_sample_rate (engine->frame_rate());
255
256         starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
257         stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
258 }
259
260 ARDOUR_UI::~ARDOUR_UI ()
261 {
262         save_ardour_state ();
263
264         if (keyboard) {
265                 delete keyboard;
266         }
267
268         if (editor) {
269                 delete editor;
270         }
271
272         if (mixer) {
273                 delete mixer;
274         }
275
276         if (add_route_dialog) {
277                 delete add_route_dialog;
278         }
279
280         AudioSource::stop_peak_thread ();
281 }
282
283 gint
284 ARDOUR_UI::configure_timeout ()
285 {
286         struct timeval now;
287         struct timeval diff;
288
289         if (last_configure_time.tv_sec == 0 && last_configure_time.tv_usec == 0) {
290                 /* no configure events yet */
291                 return TRUE;
292         }
293
294         gettimeofday (&now, 0);
295         timersub (&now, &last_configure_time, &diff);
296
297         /* force a gap of 0.5 seconds since the last configure event
298          */
299
300         if (diff.tv_sec == 0 && diff.tv_usec < 500000) {
301                 return TRUE;
302         } else {
303                 have_configure_timeout = false;
304                 save_ardour_state ();
305                 return FALSE;
306         }
307 }
308
309 gboolean
310 ARDOUR_UI::configure_handler (GdkEventConfigure* conf)
311 {
312         if (have_configure_timeout) {
313                 gettimeofday (&last_configure_time, 0);
314         } else {
315                 Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::configure_timeout), 100);
316                 have_configure_timeout = true;
317         }
318                 
319         return FALSE;
320 }
321
322 void
323 ARDOUR_UI::save_ardour_state ()
324 {
325         if (!keyboard || !mixer || !editor) {
326                 return;
327         }
328         
329         /* XXX this is all a bit dubious. add_extra_xml() uses
330            a different lifetime model from add_instant_xml().
331         */
332
333         XMLNode* node = new XMLNode (keyboard->get_state());
334         Config->add_extra_xml (*node);
335         Config->save_state();
336
337         XMLNode enode(static_cast<Stateful*>(editor)->get_state());
338         XMLNode mnode(mixer->get_state());
339
340         if (session) {
341                 session->add_instant_xml (enode, session->path());
342                 session->add_instant_xml (mnode, session->path());
343         } else {
344                 Config->add_instant_xml (enode, get_user_ardour_path());
345                 Config->add_instant_xml (mnode, get_user_ardour_path());
346         }
347
348         /* keybindings */
349
350         AccelMap::save ("ardour.saved_bindings");
351 }
352
353 void
354 ARDOUR_UI::startup ()
355 {
356         /* Once the UI is up and running, start the audio engine. Doing
357            this before the UI is up and running can cause problems
358            when not running with SCHED_FIFO, because the amount of
359            CPU and disk work needed to get the UI started can interfere
360            with the scheduling of the audio thread.
361         */
362
363         Glib::signal_idle().connect (mem_fun(*this, &ARDOUR_UI::start_engine));
364 }
365
366 void
367 ARDOUR_UI::finish()
368 {
369         if (session && session->dirty()) {
370                 switch (ask_about_saving_session(_("quit"))) {
371                 case -1:
372                         return;
373                         break;
374                 case 1:
375                         /* use the default name */
376                         if (save_state_canfail ("")) {
377                                 /* failed - don't quit */
378                                 MessageDialog msg (*editor, 
379                                                _("\
380 Ardour was unable to save your session.\n\n\
381 If you still wish to quit, please use the\n\n\
382 \"Just quit\" option."));
383                                 msg.run ();
384                                 return;
385                         }
386                         break;
387                 case 0:
388                         break;
389                 }
390         }
391         Config->save_state();
392         quit ();
393 }
394
395 int
396 ARDOUR_UI::ask_about_saving_session (const string & what)
397 {
398         ArdourDialog window (_("ardour: save session?"));
399         Gtk::HBox dhbox;  // the hbox for the image and text
400         Gtk::Label  prompt_label;
401         Gtk::Image* dimage = manage (new Gtk::Image(Stock::DIALOG_WARNING,  Gtk::ICON_SIZE_DIALOG));
402
403         string msg;
404
405         msg = string_compose(_("Don't %1"), what);
406         window.add_button (msg, RESPONSE_REJECT);
407         msg = string_compose(_("Just %1"), what);
408         window.add_button (msg, RESPONSE_APPLY);
409         msg = string_compose(_("Save and %1"), what);
410         window.add_button (msg, RESPONSE_ACCEPT);
411
412         window.set_default_response (RESPONSE_ACCEPT);
413
414         Gtk::Button noquit_button (msg);
415         noquit_button.set_name ("EditorGTKButton");
416
417         string prompt;
418         string type;
419
420         if (session->snap_name() == session->name()) {
421                 type = _("session");
422         } else {
423                 type = _("snapshot");
424         }
425         prompt = string_compose(_("The %1\"%2\"\nhas not been saved.\n\nAny changes made this time\nwill be lost unless you save it.\n\nWhat do you want to do?"), 
426                          type, session->snap_name());
427         
428         prompt_label.set_text (prompt);
429         prompt_label.set_name (X_("PrompterLabel"));
430         prompt_label.set_alignment(ALIGN_LEFT, ALIGN_TOP);
431
432         dimage->set_alignment(ALIGN_CENTER, ALIGN_TOP)
433 ;
434         dhbox.set_homogeneous (false);
435         dhbox.pack_start (*dimage, false, false, 5);
436         dhbox.pack_start (prompt_label, true, false, 5);
437         window.get_vbox()->pack_start (dhbox);
438
439         window.set_name (_("Prompter"));
440         window.set_position (Gtk::WIN_POS_MOUSE);
441         window.set_modal (true);
442         window.set_resizable (false);
443         window.show_all ();
444
445         save_the_session = 0;
446
447         window.present ();
448
449         ResponseType r = (ResponseType) window.run();
450
451         window.hide ();
452
453         switch (r) {
454         case RESPONSE_ACCEPT: // save and get out of here
455                 return 1;
456         case RESPONSE_APPLY:  // get out of here
457                 return 0;
458         default:
459                 break;
460         }
461
462         return -1;
463 }
464         
465 gint
466 ARDOUR_UI::every_second ()
467 {
468         update_cpu_load ();
469         update_buffer_load ();
470         update_disk_space ();
471         return TRUE;
472 }
473
474 gint
475 ARDOUR_UI::every_point_one_seconds ()
476 {
477         update_speed_display ();
478         RapidScreenUpdate(); /* EMIT_SIGNAL */
479         return TRUE;
480 }
481
482 gint
483 ARDOUR_UI::every_point_zero_one_seconds ()
484 {
485         SuperRapidScreenUpdate(); /* EMIT_SIGNAL */
486         return TRUE;
487 }
488
489 void
490 ARDOUR_UI::update_sample_rate (nframes_t ignored)
491 {
492         char buf[32];
493
494         ENSURE_GUI_THREAD (bind (mem_fun(*this, &ARDOUR_UI::update_sample_rate), ignored));
495
496         if (!engine->connected()) {
497
498                 snprintf (buf, sizeof (buf), _("disconnected"));
499
500         } else {
501
502                 nframes_t rate = engine->frame_rate();
503                 
504                 if (fmod (rate, 1000.0) != 0.0) {
505                         snprintf (buf, sizeof (buf), _("%.1f kHz / %4.1f msecs"), 
506                                   (float) rate/1000.0f,
507                                   (engine->frames_per_cycle() / (float) rate) * 1000.0f);
508                 } else {
509                         snprintf (buf, sizeof (buf), _("%u kHz / %4.1f msecs"), 
510                                   rate/1000,
511                                   (engine->frames_per_cycle() / (float) rate) * 1000.0f);
512                 }
513         }
514
515         sample_rate_label.set_text (buf);
516 }
517
518 void
519 ARDOUR_UI::update_cpu_load ()
520 {
521         char buf[32];
522         snprintf (buf, sizeof (buf), _("DSP: %.1f%%"), engine->get_cpu_load());
523         cpu_load_label.set_text (buf);
524 }
525
526 void
527 ARDOUR_UI::update_buffer_load ()
528 {
529         char buf[64];
530
531         if (session) {
532                 snprintf (buf, sizeof (buf), _("Buffers p:%" PRIu32 "%% c:%" PRIu32 "%%"), 
533                           session->playback_load(), session->capture_load());
534                 buffer_load_label.set_text (buf);
535         } else {
536                 buffer_load_label.set_text ("");
537         }
538 }
539
540 void
541 ARDOUR_UI::count_recenabled_streams (Route& route)
542 {
543         Track* track = dynamic_cast<Track*>(&route);
544         if (track && track->diskstream()->record_enabled()) {
545                 rec_enabled_streams += track->n_inputs();
546         }
547 }
548
549 void
550 ARDOUR_UI::update_disk_space()
551 {
552         if (session == 0) {
553                 return;
554         }
555
556         nframes_t frames = session->available_capture_duration();
557         char buf[64];
558
559         if (frames == max_frames) {
560                 strcpy (buf, _("Disk: 24hrs+"));
561         } else {
562                 int hrs;
563                 int mins;
564                 int secs;
565                 nframes_t fr = session->frame_rate();
566                 
567                 rec_enabled_streams = 0;
568                 session->foreach_route (this, &ARDOUR_UI::count_recenabled_streams);
569                 
570                 if (rec_enabled_streams) {
571                         frames /= rec_enabled_streams;
572                 }
573                 
574                 hrs  = frames / (fr * 3600);
575                 frames -= hrs * fr * 3600;
576                 mins = frames / (fr * 60);
577                 frames -= mins * fr * 60;
578                 secs = frames / fr;
579                 
580                 snprintf (buf, sizeof(buf), _("Disk: %02dh:%02dm:%02ds"), hrs, mins, secs);
581         }
582
583         disk_space_label.set_text (buf);
584 }                 
585
586 gint
587 ARDOUR_UI::update_wall_clock ()
588 {
589         time_t now;
590         struct tm *tm_now;
591         char buf[16];
592
593         time (&now);
594         tm_now = localtime (&now);
595
596         sprintf (buf, "%02d:%02d", tm_now->tm_hour, tm_now->tm_min);
597         wall_clock_label.set_text (buf);
598
599         return TRUE;
600 }
601 void
602 ARDOUR_UI::control_methods_adjusted ()
603
604 {
605         int which_method;
606
607         which_method = (int) online_control_button->adjustment.get_value();
608         switch (which_method) {
609         case 0:
610                 allow_mmc_and_local ();
611                 break;
612         case 1:
613                 allow_mmc_only ();
614                 break;
615         case 2:
616                 allow_local_only ();
617                 break;
618         default:
619                 fatal << _("programming error: impossible control method") << endmsg;
620         }
621 }
622         
623
624 void
625 ARDOUR_UI::mmc_device_id_adjusted ()
626
627 {
628 #if 0
629         if (mmc) {
630                 int dev_id = (int) mmc_id_button->adjustment.get_value();
631                 mmc->set_device_id (dev_id);
632         }
633 #endif
634 }
635
636 gint
637 ARDOUR_UI::session_menu (GdkEventButton *ev)
638 {
639         session_popup_menu->popup (0, 0);
640         return TRUE;
641 }
642
643 void
644 ARDOUR_UI::redisplay_recent_sessions ()
645 {
646         vector<string *> *sessions;
647         vector<string *>::iterator i;
648         RecentSessionsSorter cmp;
649         
650         recent_session_display.set_model (Glib::RefPtr<TreeModel>(0));
651         recent_session_model->clear ();
652
653         RecentSessions rs;
654         ARDOUR::read_recent_sessions (rs);
655
656         if (rs.empty()) {
657                 recent_session_display.set_model (recent_session_model);
658                 return;
659         }
660
661         /* sort them alphabetically */
662         sort (rs.begin(), rs.end(), cmp);
663         sessions = new vector<string*>;
664
665         for (RecentSessions::iterator i = rs.begin(); i != rs.end(); ++i) {
666                 sessions->push_back (new string ((*i).second));
667         }
668
669         for (i = sessions->begin(); i != sessions->end(); ++i) {
670
671                 vector<string*>* states;
672                 vector<const gchar*> item;
673                 string fullpath = *(*i);
674                 
675                 /* remove any trailing / */
676
677                 if (fullpath[fullpath.length()-1] == '/') {
678                         fullpath = fullpath.substr (0, fullpath.length()-1);
679                 }
680
681                 /* now get available states for this session */
682
683                 if ((states = Session::possible_states (fullpath)) == 0) {
684                         /* no state file? */
685                         continue;
686                 }
687
688                 TreeModel::Row row = *(recent_session_model->append());
689
690                 row[recent_session_columns.visible_name] = Glib::path_get_basename (fullpath);
691                 row[recent_session_columns.fullpath] = fullpath;
692
693                 if (states->size() > 1) {
694
695                         /* add the children */
696                         
697                         for (vector<string*>::iterator i2 = states->begin(); i2 != states->end(); ++i2) {
698                                 
699                                 TreeModel::Row child_row = *(recent_session_model->append (row.children()));
700
701                                 child_row[recent_session_columns.visible_name] = **i2;
702                                 child_row[recent_session_columns.fullpath] = fullpath;
703
704                                 delete *i2;
705                         }
706                 }
707
708                 delete states;
709         }
710
711         recent_session_display.set_model (recent_session_model);
712         delete sessions;
713 }
714
715 void
716 ARDOUR_UI::build_session_selector ()
717 {
718         session_selector_window = new ArdourDialog ("session selector");
719         
720         Gtk::ScrolledWindow *scroller = manage (new Gtk::ScrolledWindow);
721         
722         session_selector_window->add_button (Stock::CANCEL, RESPONSE_CANCEL);
723         session_selector_window->add_button (Stock::OPEN, RESPONSE_ACCEPT);
724         session_selector_window->set_default_response (RESPONSE_ACCEPT);
725         recent_session_model = TreeStore::create (recent_session_columns);
726         recent_session_display.set_model (recent_session_model);
727         recent_session_display.append_column (_("Recent Sessions"), recent_session_columns.visible_name);
728         recent_session_display.set_headers_visible (false);
729         recent_session_display.get_selection()->set_mode (SELECTION_SINGLE);
730
731         recent_session_display.signal_row_activated().connect (mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
732
733         scroller->add (recent_session_display);
734         scroller->set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
735
736         session_selector_window->set_name ("SessionSelectorWindow");
737         session_selector_window->set_size_request (200, 400);
738         session_selector_window->get_vbox()->pack_start (*scroller);
739         session_selector_window->show_all_children();
740 }
741
742 void
743 ARDOUR_UI::recent_session_row_activated (const TreePath& path, TreeViewColumn* col)
744 {
745         session_selector_window->response (RESPONSE_ACCEPT);
746 }
747
748 void
749 ARDOUR_UI::open_recent_session ()
750 {
751         /* popup selector window */
752
753         if (session_selector_window == 0) {
754                 build_session_selector ();
755         }
756
757         redisplay_recent_sessions ();
758
759         ResponseType r = (ResponseType) session_selector_window->run ();
760
761         session_selector_window->hide();
762
763         switch (r) {
764         case RESPONSE_ACCEPT:
765                 break;
766         default:
767                 return;
768         }
769
770         Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
771
772         if (i == recent_session_model->children().end()) {
773                 return;
774         }
775         
776         Glib::ustring path = (*i)[recent_session_columns.fullpath];
777         Glib::ustring state = (*i)[recent_session_columns.visible_name];
778
779         _session_is_new = false;
780
781         load_session (path, state);
782 }
783
784 bool
785 ARDOUR_UI::filter_ardour_session_dirs (const FileFilter::Info& info) 
786 {
787         struct stat statbuf;
788
789         if (stat (info.filename.c_str(), &statbuf) != 0) {
790                 return false;
791         }
792
793         if (!S_ISDIR(statbuf.st_mode)) {
794                 return false;
795         }
796
797         // XXX Portability
798         
799         string session_file = info.filename;
800         session_file += '/';
801         session_file += Glib::path_get_basename (info.filename);
802         session_file += ".ardour";
803         
804         if (stat (session_file.c_str(), &statbuf) != 0) {
805                 return false;
806         }
807
808         return S_ISREG (statbuf.st_mode);
809 }
810
811 void
812 ARDOUR_UI::open_session ()
813 {
814         /* popup selector window */
815
816         if (open_session_selector == 0) {
817
818                 /* ardour sessions are folders */
819
820                 open_session_selector = new Gtk::FileChooserDialog (_("open session"), FILE_CHOOSER_ACTION_OPEN);
821                 open_session_selector->add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
822                 open_session_selector->add_button (Gtk::Stock::OPEN, Gtk::RESPONSE_ACCEPT);
823
824                 FileFilter session_filter;
825                 session_filter.add_pattern ("*.ardour");
826                 session_filter.set_name (_("Ardour sessions"));
827                 open_session_selector->add_filter (session_filter);
828                 open_session_selector->set_filter (session_filter);
829         }
830
831         int response = open_session_selector->run();
832         open_session_selector->hide ();
833
834         switch (response) {
835         case RESPONSE_ACCEPT:
836                 break;
837         default:
838                 open_session_selector->hide();
839                 return;
840         }
841
842         open_session_selector->hide();
843         string session_path = open_session_selector->get_filename();
844         string path, name;
845         bool isnew;
846
847         if (session_path.length() > 0) {
848                 if (Session::find_session (session_path, path, name, isnew) == 0) {
849                         _session_is_new = isnew;
850                         load_session (path, name);
851                 }
852         }
853 }
854
855
856 void
857 ARDOUR_UI::session_add_midi_track ()
858 {
859         cerr << _("Patience is a virtue.\n");
860 }
861
862 void
863 ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t output_channels, ARDOUR::TrackMode mode, uint32_t how_many)
864 {
865         list<boost::shared_ptr<AudioTrack> > tracks;
866         Session::RouteList routes;
867
868         if (session == 0) {
869                 warning << _("You cannot add a track or bus without a session already loaded.") << endmsg;
870                 return;
871         }
872
873         try { 
874                 if (track) {
875                         tracks = session->new_audio_track (input_channels, output_channels, mode, how_many);
876
877                         if (tracks.size() != how_many) {
878                                 if (how_many == 1) {
879                                         error << _("could not create a new audio track") << endmsg;
880                                 } else {
881                                         error << string_compose (_("could not create %1 new audio tracks"), how_many) << endmsg;
882                                 }
883                         }
884
885                 } else {
886
887                         routes = session->new_audio_route (input_channels, output_channels, how_many);
888
889                         if (routes.size() != how_many) {
890                                 if (how_many == 1) {
891                                         error << _("could not create a new audio track") << endmsg;
892                                 } else {
893                                         error << string_compose (_("could not create %1 new audio tracks"), how_many) << endmsg;
894                                 }
895                         }
896                 }
897                 
898 #if CONTROLOUTS
899                 if (need_control_room_outs) {
900                         pan_t pans[2];
901                         
902                         pans[0] = 0.5;
903                         pans[1] = 0.5;
904                         
905                         route->set_stereo_control_outs (control_lr_channels);
906                         route->control_outs()->set_stereo_pan (pans, this);
907                 }
908 #endif /* CONTROLOUTS */
909         }
910
911         catch (...) {
912                 MessageDialog msg (*editor, 
913                                    _("There are insufficient JACK ports available\n\
914 to create a new track or bus.\n\
915 You should save Ardour, exit and\n\
916 restart JACK with more ports."));
917                 msg.run ();
918         }
919 }
920
921 void
922 ARDOUR_UI::do_transport_locate (nframes_t new_position)
923 {
924         nframes_t _preroll = 0;
925
926         if (session) {
927                 // XXX CONFIG_CHANGE FIX - requires AnyTime handling
928                 // _preroll = session->convert_to_frames_at (new_position, Config->get_preroll());
929
930                 if (new_position > _preroll) {
931                         new_position -= _preroll;
932                 } else {
933                         new_position = 0;
934                 }
935
936                 session->request_locate (new_position);
937         }
938 }
939
940 void
941 ARDOUR_UI::transport_goto_start ()
942 {
943         if (session) {
944                 session->goto_start();
945
946                 
947                 /* force displayed area in editor to start no matter
948                    what "follow playhead" setting is.
949                 */
950                 
951                 if (editor) {
952                         editor->reposition_x_origin (session->current_start_frame());
953                 }
954         }
955 }
956
957 void
958 ARDOUR_UI::transport_goto_zero ()
959 {
960         if (session) {
961                 session->request_locate (0);
962
963                 
964                 /* force displayed area in editor to start no matter
965                    what "follow playhead" setting is.
966                 */
967                 
968                 if (editor) {
969                         editor->reposition_x_origin (0);
970                 }
971         }
972 }
973
974 void
975 ARDOUR_UI::transport_goto_end ()
976 {
977         if (session) {
978                 nframes_t frame = session->current_end_frame();
979                 session->request_locate (frame);
980
981                 /* force displayed area in editor to start no matter
982                    what "follow playhead" setting is.
983                 */
984                 
985                 if (editor) {
986                         editor->reposition_x_origin (frame);
987                 }
988         }
989 }
990
991 void
992 ARDOUR_UI::transport_stop ()
993 {
994         if (!session) {
995                 return;
996         }
997
998         if (session->is_auditioning()) {
999                 session->cancel_audition ();
1000                 return;
1001         }
1002         
1003         if (session->get_play_loop ()) {
1004                 session->request_play_loop (false);
1005         }
1006         
1007         session->request_stop ();
1008 }
1009
1010 void
1011 ARDOUR_UI::transport_stop_and_forget_capture ()
1012 {
1013         if (session) {
1014                 session->request_stop (true);
1015         }
1016 }
1017
1018 void
1019 ARDOUR_UI::remove_last_capture()
1020 {
1021         if (editor) {
1022                 editor->remove_last_capture();
1023         }
1024 }
1025
1026 void
1027 ARDOUR_UI::transport_record ()
1028 {
1029         if (session) {
1030                 switch (session->record_status()) {
1031                 case Session::Disabled:
1032                         if (session->ntracks() == 0) {
1033                                 MessageDialog msg (*editor, _("Please create 1 or more track\nbefore trying to record.\nCheck the Session menu."));
1034                                 msg.run ();
1035                                 return;
1036                         }
1037                         session->maybe_enable_record ();
1038                         break;
1039                 case Session::Recording:
1040                 case Session::Enabled:
1041                         session->disable_record (true);
1042                 }
1043         }
1044 }
1045
1046 void
1047 ARDOUR_UI::transport_roll ()
1048 {
1049         bool rolling;
1050
1051         if (!session) {
1052                 return;
1053         }
1054
1055         rolling = session->transport_rolling ();
1056
1057         if (session->get_play_loop()) {
1058                 session->request_play_loop (false);
1059                 auto_loop_button.set_active (false);
1060                 roll_button.set_active (true);
1061         } else if (session->get_play_range ()) {
1062                 session->request_play_range (false);
1063                 play_selection_button.set_active (false);
1064         } else if (rolling) {
1065                 session->request_locate (session->last_transport_start(), true);
1066         }
1067
1068         session->request_transport_speed (1.0f);
1069 }
1070
1071 void
1072 ARDOUR_UI::transport_loop()
1073 {
1074         if (session) {
1075                 if (session->get_play_loop()) {
1076                         if (session->transport_rolling()) {
1077                                 Location * looploc = session->locations()->auto_loop_location();
1078                                 if (looploc) {
1079                                         session->request_locate (looploc->start(), true);
1080                                 }
1081                         }
1082                 }
1083                 else {
1084                         session->request_play_loop (true);
1085                 }
1086         }
1087 }
1088
1089 void
1090 ARDOUR_UI::transport_play_selection ()
1091 {
1092         if (!session) {
1093                 return;
1094         }
1095
1096         if (!session->get_play_range()) {
1097                 session->request_stop ();
1098         }
1099
1100         editor->play_selection ();
1101 }
1102
1103 void
1104 ARDOUR_UI::transport_rewind (int option)
1105 {
1106         float current_transport_speed;
1107  
1108         if (session) {
1109                 current_transport_speed = session->transport_speed();
1110                 
1111                 if (current_transport_speed >= 0.0f) {
1112                         switch (option) {
1113                         case 0:
1114                                 session->request_transport_speed (-1.0f);
1115                                 break;
1116                         case 1:
1117                                 session->request_transport_speed (-4.0f);
1118                                 break;
1119                         case -1:
1120                                 session->request_transport_speed (-0.5f);
1121                                 break;
1122                         }
1123                 } else {
1124                         /* speed up */
1125                         session->request_transport_speed (current_transport_speed * 1.5f);
1126                 }
1127         }
1128 }
1129
1130 void
1131 ARDOUR_UI::transport_forward (int option)
1132 {
1133         float current_transport_speed;
1134         
1135         if (session) {
1136                 current_transport_speed = session->transport_speed();
1137                 
1138                 if (current_transport_speed <= 0.0f) {
1139                         switch (option) {
1140                         case 0:
1141                                 session->request_transport_speed (1.0f);
1142                                 break;
1143                         case 1:
1144                                 session->request_transport_speed (4.0f);
1145                                 break;
1146                         case -1:
1147                                 session->request_transport_speed (0.5f);
1148                                 break;
1149                         }
1150                 } else {
1151                         /* speed up */
1152                         session->request_transport_speed (current_transport_speed * 1.5f);
1153                 }
1154         }
1155 }
1156
1157 void
1158 ARDOUR_UI::toggle_record_enable (uint32_t dstream)
1159 {
1160         if (session == 0) {
1161                 return;
1162         }
1163
1164         boost::shared_ptr<Route> r;
1165         
1166         if ((r = session->route_by_remote_id (dstream)) != 0) {
1167
1168                 Track* t;
1169
1170                 if ((t = dynamic_cast<Track*>(r.get())) != 0) {
1171                         t->diskstream()->set_record_enabled (!t->diskstream()->record_enabled());
1172                 }
1173         }
1174         if (session == 0) {
1175                 return;
1176         }
1177 }
1178
1179 void
1180 ARDOUR_UI::queue_transport_change ()
1181 {
1182         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &ARDOUR_UI::map_transport_state));
1183 }
1184
1185 void
1186 ARDOUR_UI::map_transport_state ()
1187 {
1188         float sp = session->transport_speed();
1189
1190         if (sp == 1.0f) {
1191                 transport_rolling ();
1192         } else if (sp < 0.0f) {
1193                 transport_rewinding ();
1194         } else if (sp > 0.0f) {
1195                 transport_forwarding ();
1196         } else {
1197                 transport_stopped ();
1198         }
1199 }
1200
1201 void
1202 ARDOUR_UI::allow_local_only ()
1203 {
1204
1205 }
1206
1207 void
1208 ARDOUR_UI::allow_mmc_only ()
1209 {
1210
1211 }
1212
1213 void
1214 ARDOUR_UI::allow_mmc_and_local ()
1215 {
1216
1217 }
1218
1219 void
1220 ARDOUR_UI::GlobalClickBox::printer (char buf[32], Adjustment &adj, void *arg)
1221 {
1222         snprintf (buf, sizeof(buf), "%s", ((GlobalClickBox *) arg)->strings[
1223                 (int) adj.get_value()].c_str());
1224 }
1225
1226 void
1227 ARDOUR_UI::engine_stopped ()
1228 {
1229         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_stopped));
1230         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
1231         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
1232 }
1233
1234 void
1235 ARDOUR_UI::engine_running ()
1236 {
1237         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_running));
1238         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, true);
1239         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, false);
1240 }
1241
1242 void
1243 ARDOUR_UI::engine_halted ()
1244 {
1245         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::engine_halted));
1246
1247         ActionManager::set_sensitive (ActionManager::jack_sensitive_actions, false);
1248         ActionManager::set_sensitive (ActionManager::jack_opposite_sensitive_actions, true);
1249
1250         update_sample_rate (0);
1251
1252         MessageDialog msg (*editor, 
1253                            _("\
1254 JACK has either been shutdown or it\n\
1255 disconnected Ardour because Ardour\n\
1256 was not fast enough. You can save the\n\
1257 session and/or try to reconnect to JACK ."));
1258         msg.run ();
1259 }
1260
1261 int32_t
1262 ARDOUR_UI::do_engine_start ()
1263 {
1264         try { 
1265                 engine->start();
1266         }
1267
1268         catch (AudioEngine::PortRegistrationFailure& err) {
1269                 engine->stop ();
1270                 error << _("Unable to create all required ports")
1271                       << endmsg;
1272                 unload_session ();
1273                 return -1;
1274         }
1275
1276         catch (...) {
1277                 engine->stop ();
1278                 error << _("Unable to start the session running")
1279                       << endmsg;
1280                 unload_session ();
1281                 return -2;
1282         }
1283         
1284         return 0;
1285 }
1286
1287 gint
1288 ARDOUR_UI::start_engine ()
1289 {
1290         if (do_engine_start () == 0) {
1291                 if (session && _session_is_new) {
1292                         /* we need to retain initial visual 
1293                            settings for a new session 
1294                         */
1295                         session->save_state ("");
1296                 }
1297
1298                 /* there is too much going on, in too many threads, for us to 
1299                    end up with a clean session. So wait 1 second after loading,
1300                    and fix it up. its ugly, but until i come across a better
1301                    solution, its what we have.
1302                 */
1303
1304                 Glib::signal_timeout().connect (mem_fun(*this, &ARDOUR_UI::make_session_clean), 1000);
1305         }
1306
1307         return FALSE;
1308 }
1309
1310 void
1311 ARDOUR_UI::update_clocks ()
1312 {
1313          Clock (session->audible_frame()); /* EMIT_SIGNAL */
1314 }
1315
1316 void
1317 ARDOUR_UI::start_clocking ()
1318 {
1319         clock_signal_connection = RapidScreenUpdate.connect (mem_fun(*this, &ARDOUR_UI::update_clocks));
1320 }
1321
1322 void
1323 ARDOUR_UI::stop_clocking ()
1324 {
1325         clock_signal_connection.disconnect ();
1326 }
1327         
1328 void
1329 ARDOUR_UI::toggle_clocking ()
1330 {
1331 #if 0
1332         if (clock_button.get_active()) {
1333                 start_clocking ();
1334         } else {
1335                 stop_clocking ();
1336         }
1337 #endif
1338 }
1339
1340 gint
1341 ARDOUR_UI::_blink (void *arg)
1342
1343 {
1344         ((ARDOUR_UI *) arg)->blink ();
1345         return TRUE;
1346 }
1347
1348 void
1349 ARDOUR_UI::blink ()
1350 {
1351          Blink (blink_on = !blink_on); /* EMIT_SIGNAL */
1352 }
1353
1354 void
1355 ARDOUR_UI::start_blinking ()
1356 {
1357         /* Start the blink signal. Everybody with a blinking widget
1358            uses Blink to drive the widget's state.
1359         */
1360
1361         if (blink_timeout_tag < 0) {
1362                 blink_on = false;       
1363                 blink_timeout_tag = g_timeout_add (240, _blink, this);
1364         }
1365 }
1366
1367 void
1368 ARDOUR_UI::stop_blinking ()
1369 {
1370         if (blink_timeout_tag >= 0) {
1371                 g_source_remove (blink_timeout_tag);
1372                 blink_timeout_tag = -1;
1373         }
1374 }
1375
1376 void
1377 ARDOUR_UI::name_io_setup (AudioEngine& engine, 
1378                           string& buf,
1379                           IO& io,
1380                           bool in)
1381 {
1382         if (in) {
1383                 if (io.n_inputs() == 0) {
1384                         buf = _("none");
1385                         return;
1386                 }
1387                 
1388                 /* XXX we're not handling multiple ports yet. */
1389
1390                 const char **connections = io.input(0)->get_connections();
1391                 
1392                 if (connections == 0 || connections[0] == '\0') {
1393                         buf = _("off");
1394                 } else {
1395                         buf = connections[0];
1396                 }
1397
1398                 free (connections);
1399
1400         } else {
1401
1402                 if (io.n_outputs() == 0) {
1403                         buf = _("none");
1404                         return;
1405                 }
1406                 
1407                 /* XXX we're not handling multiple ports yet. */
1408
1409                 const char **connections = io.output(0)->get_connections();
1410                 
1411                 if (connections == 0 || connections[0] == '\0') {
1412                         buf = _("off");
1413                 } else {
1414                         buf = connections[0];
1415                 }
1416
1417                 free (connections);
1418         }
1419 }
1420
1421 void
1422 ARDOUR_UI::snapshot_session ()
1423 {
1424         ArdourPrompter prompter (true);
1425         string snapname;
1426         string now;
1427         time_t n;
1428
1429         time (&n);
1430         now = ctime (&n);
1431         now = now.substr (20, 4) + now.substr (3, 16) + " (" + now.substr (0, 3) + ")";
1432
1433         prompter.set_name ("Prompter");
1434         prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
1435         prompter.set_prompt (_("Name of New Snapshot"));
1436         prompter.set_initial_text (now);
1437         
1438         switch (prompter.run()) {
1439         case RESPONSE_ACCEPT:
1440                 prompter.get_result (snapname);
1441                 if (snapname.length()){
1442                         save_state (snapname);
1443                 }
1444                 break;
1445
1446         default:
1447                 break;
1448         }
1449 }
1450
1451 void
1452 ARDOUR_UI::save_state (const string & name)
1453 {
1454         (void) save_state_canfail (name);
1455 }
1456                 
1457 int
1458 ARDOUR_UI::save_state_canfail (string name)
1459 {
1460         if (session) {
1461                 int ret;
1462
1463                 if (name.length() == 0) {
1464                         name = session->snap_name();
1465                 }
1466
1467                 if ((ret = session->save_state (name)) != 0) {
1468                         return ret;
1469                 }
1470         }
1471         save_ardour_state (); /* XXX cannot fail? yeah, right ... */
1472         return 0;
1473 }
1474
1475 void
1476 ARDOUR_UI::restore_state (string name)
1477 {
1478         if (session) {
1479                 if (name.length() == 0) {
1480                         name = session->name();
1481                 }
1482                 session->restore_state (name);
1483         }
1484 }
1485
1486 void
1487 ARDOUR_UI::primary_clock_value_changed ()
1488 {
1489         if (session) {
1490                 session->request_locate (primary_clock.current_time ());
1491         }
1492 }
1493
1494 void
1495 ARDOUR_UI::secondary_clock_value_changed ()
1496 {
1497         if (session) {
1498                 session->request_locate (secondary_clock.current_time ());
1499         }
1500 }
1501
1502 void
1503 ARDOUR_UI::rec_enable_button_blink (bool onoff, AudioDiskstream *dstream, Widget *w)
1504 {
1505         if (session && dstream && dstream->record_enabled()) {
1506
1507                 Session::RecordState rs;
1508                 
1509                 rs = session->record_status ();
1510
1511                 switch (rs) {
1512                 case Session::Disabled:
1513                 case Session::Enabled:
1514                         if (w->get_state() != STATE_SELECTED) {
1515                                 w->set_state (STATE_SELECTED);
1516                         }
1517                         break;
1518
1519                 case Session::Recording:
1520                         if (w->get_state() != STATE_ACTIVE) {
1521                                 w->set_state (STATE_ACTIVE);
1522                         }
1523                         break;
1524                 }
1525
1526         } else {
1527                 if (w->get_state() != STATE_NORMAL) {
1528                         w->set_state (STATE_NORMAL);
1529                 }
1530         }
1531 }
1532
1533 void
1534 ARDOUR_UI::transport_rec_enable_blink (bool onoff) 
1535 {
1536         if (session == 0) {
1537                 return;
1538         }
1539         
1540         switch (session->record_status()) {
1541         case Session::Enabled:
1542                 if (onoff) {
1543                         rec_button.set_state (1);
1544                 } else {
1545                         rec_button.set_state (0);
1546                 }
1547                 break;
1548
1549         case Session::Recording:
1550                 rec_button.set_state (2);
1551                 break;
1552
1553         default:
1554                 rec_button.set_state (0);
1555                 break;
1556         }
1557 }
1558
1559 gint
1560 ARDOUR_UI::hide_and_quit (GdkEventAny *ev, ArdourDialog *window)
1561 {
1562         window->hide();
1563         Gtk::Main::quit ();
1564         return TRUE;
1565 }
1566
1567 void
1568 ARDOUR_UI::start_keyboard_prefix ()
1569 {
1570         keyboard->start_prefix();
1571 }
1572
1573 void
1574 ARDOUR_UI::save_template ()
1575
1576 {
1577         ArdourPrompter prompter (true);
1578         string name;
1579
1580         prompter.set_name (X_("Prompter"));
1581         prompter.set_prompt (_("Name for mix template:"));
1582         prompter.set_initial_text(session->name() + _("-template"));
1583         prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
1584
1585         switch (prompter.run()) {
1586         case RESPONSE_ACCEPT:
1587                 prompter.get_result (name);
1588                 
1589                 if (name.length()) {
1590                         session->save_template (name);
1591                 }
1592                 break;
1593
1594         default:
1595                 break;
1596         }
1597 }
1598
1599 void
1600 ARDOUR_UI::new_session (bool startup, std::string predetermined_path)
1601 {
1602         string session_name;
1603         string session_path;
1604
1605         int response = Gtk::RESPONSE_NONE;
1606
1607         new_session_dialog->set_modal(true);
1608         new_session_dialog->set_name (predetermined_path);
1609         new_session_dialog->reset_recent();
1610         new_session_dialog->show();
1611
1612         do {
1613                 response = new_session_dialog->run ();
1614                 
1615                 _session_is_new = false;
1616
1617                 if (response == Gtk::RESPONSE_CANCEL || response == Gtk::RESPONSE_DELETE_EVENT) {
1618
1619                         if (!session) {
1620                                 quit();
1621                         }
1622                         new_session_dialog->hide ();
1623                         return;
1624
1625                 } else if (response == Gtk::RESPONSE_NONE) {
1626
1627                         /* Clear was pressed */
1628                         new_session_dialog->reset();
1629
1630                 } else if (response == Gtk::RESPONSE_YES) {
1631
1632                         /* YES  == OPEN, but there's no enum for that */
1633
1634                         session_name = new_session_dialog->session_name();
1635                         
1636                         if (session_name.empty()) {
1637                                 response = Gtk::RESPONSE_NONE;
1638                                 continue;
1639                         } 
1640
1641                         if (session_name[0] == '/' || 
1642                             (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1643                             (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1644                                 load_session (Glib::path_get_dirname (session_name), session_name);
1645                         } else {
1646                                 session_path = new_session_dialog->session_folder();
1647                                 load_session (session_path, session_name);
1648                         }
1649                         
1650                 } else if (response == Gtk::RESPONSE_OK) {
1651
1652                         session_name = new_session_dialog->session_name();
1653                         
1654                         if (new_session_dialog->get_current_page() == 1) {
1655                   
1656                                 /* XXX this is a bit of a hack.. 
1657                                    i really want the new sesion dialog to return RESPONSE_YES
1658                                    if we're on page 1 (the load page)
1659                                    Unfortunately i can't see how atm.. 
1660                                 */
1661                                 
1662                                 if (session_name.empty()) {
1663                                         response = Gtk::RESPONSE_NONE;
1664                                         continue;
1665                                 } 
1666                                 
1667                                 if (session_name[0] == '/' || 
1668                                     (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1669                                     (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1670                                         load_session (Glib::path_get_dirname (session_name), session_name);
1671                                 } else {
1672                                         session_path = new_session_dialog->session_folder();
1673                                         load_session (session_path, session_name);
1674                                 }
1675                         
1676                         } else {
1677
1678                                 if (session_name.empty()) {
1679                                         response = Gtk::RESPONSE_NONE;
1680                                         continue;
1681                                 } 
1682
1683                                 if (session_name[0] == '/' || 
1684                                     (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
1685                                     (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
1686
1687                                         session_path = Glib::path_get_dirname (session_name);
1688                                         session_name = Glib::path_get_basename (session_name);
1689
1690                                 } else {
1691
1692                                         session_path = new_session_dialog->session_folder();
1693
1694                                 }
1695                                 
1696                                 //XXX This is needed because session constructor wants a 
1697                                 //non-existant path. hopefully this will be fixed at some point.
1698                                 
1699                                 session_path = Glib::build_filename (session_path, session_name);
1700                                                 
1701                                 if (g_file_test (session_path.c_str(), GFileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))) {
1702
1703                                         Glib::ustring str = string_compose (_("This session\n%1\nalready exists. Do you want to open it?"), session_path);
1704
1705                                         MessageDialog msg (str,
1706                                                            false,
1707                                                            Gtk::MESSAGE_WARNING,
1708                                                            Gtk::BUTTONS_YES_NO,
1709                                                            true);
1710
1711
1712                                         msg.set_name (X_("CleanupDialog"));
1713                                         msg.set_wmclass (_("existing_session"), "Ardour");
1714                                         msg.set_position (Gtk::WIN_POS_MOUSE);
1715                                         
1716                                         switch (msg.run()) {
1717                                         case RESPONSE_YES:
1718                                                 load_session (session_path, session_name);
1719                                                 goto done;
1720                                                 break;
1721                                         default:
1722                                                 response = RESPONSE_NONE;
1723                                                 new_session_dialog->reset ();
1724                                                 continue;
1725                                         }
1726                                 }
1727
1728                                 _session_is_new = true;
1729
1730                                 std::string template_name = new_session_dialog->session_template_name();
1731                                                 
1732                                 if (new_session_dialog->use_session_template()) {
1733                                                         
1734                                         load_session (session_path, session_name, &template_name);
1735                           
1736                                 } else {
1737                                                         
1738                                         uint32_t cchns;
1739                                         uint32_t mchns;
1740                                         AutoConnectOption iconnect;
1741                                         AutoConnectOption oconnect;
1742                                                         
1743                                         if (new_session_dialog->create_control_bus()) {
1744                                                 cchns = (uint32_t) new_session_dialog->control_channel_count();
1745                                         } else {
1746                                                 cchns = 0;
1747                                         }
1748                                                         
1749                                         if (new_session_dialog->create_master_bus()) {
1750                                                 mchns = (uint32_t) new_session_dialog->master_channel_count();
1751                                         } else {
1752                                                 mchns = 0;
1753                                         }
1754                                                         
1755                                         if (new_session_dialog->connect_inputs()) {
1756                                                 iconnect = AutoConnectPhysical;
1757                                         } else {
1758                                                 iconnect = AutoConnectOption (0);
1759                                         }
1760                                                         
1761                                         /// @todo some minor tweaks.
1762                                                         
1763                                         if (new_session_dialog->connect_outs_to_master()) {
1764                                                 oconnect = AutoConnectMaster;
1765                                         } else if (new_session_dialog->connect_outs_to_physical()) {
1766                                                 oconnect = AutoConnectPhysical;
1767                                         } else {
1768                                                 oconnect = AutoConnectOption (0);
1769                                         } 
1770                                                         
1771                                         uint32_t nphysin = (uint32_t) new_session_dialog->input_limit_count();
1772                                         uint32_t nphysout = (uint32_t) new_session_dialog->output_limit_count();
1773                                                         
1774                                         build_session (session_path,
1775                                                        session_name,
1776                                                        cchns,
1777                                                        mchns,
1778                                                        iconnect,
1779                                                        oconnect,
1780                                                        nphysin,
1781                                                        nphysout, 
1782                                                        engine->frame_rate() * 60 * 5);
1783                                 }
1784                         }
1785                 }
1786                 
1787         } while (response == Gtk::RESPONSE_NONE);
1788
1789   done:
1790         show();
1791         new_session_dialog->get_window()->set_cursor();
1792         new_session_dialog->hide();
1793 }
1794
1795 void
1796 ARDOUR_UI::close_session()
1797 {
1798         unload_session();
1799         new_session ();
1800 }
1801
1802 int
1803 ARDOUR_UI::load_session (const string & path, const string & snap_name, string* mix_template)
1804 {
1805         Session *new_session;
1806         int x;
1807         session_loaded = false;
1808         x = unload_session ();
1809
1810         if (x < 0) {
1811                 return -1;
1812         } else if (x > 0) {
1813                 return 0;
1814         }
1815
1816         /* if it already exists, we must have write access */
1817
1818         if (::access (path.c_str(), F_OK) == 0 && ::access (path.c_str(), W_OK)) {
1819                 MessageDialog msg (*editor, _("\
1820 You do not have write access to this session.\n\
1821 This prevents the session from being loaded."));
1822                 msg.run ();
1823                 return -1;
1824         }
1825
1826         try {
1827                 new_session = new Session (*engine, path, snap_name, mix_template);
1828         }
1829
1830         catch (...) {
1831
1832                 error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
1833                 return -1;
1834         }
1835
1836         connect_to_session (new_session);
1837
1838         Config->set_current_owner (ConfigVariableBase::Interface);
1839
1840         session_loaded = true;
1841
1842         goto_editor_window ();
1843
1844         return 0;
1845 }
1846
1847 int
1848 ARDOUR_UI::make_session_clean ()
1849 {
1850         if (session) {
1851                 session->set_clean ();
1852         }
1853
1854         show ();
1855
1856         return FALSE;
1857 }
1858
1859 int
1860 ARDOUR_UI::build_session (const string & path, const string & snap_name, 
1861                           uint32_t control_channels,
1862                           uint32_t master_channels, 
1863                           AutoConnectOption input_connect,
1864                           AutoConnectOption output_connect,
1865                           uint32_t nphysin,
1866                           uint32_t nphysout,
1867                           nframes_t initial_length)
1868 {
1869         Session *new_session;
1870         int x;
1871
1872         session_loaded = false;
1873         x = unload_session ();
1874         if (x < 0) {
1875                 return -1;
1876         } else if (x > 0) {
1877                 return 0;
1878         }
1879         
1880         _session_is_new = true;
1881
1882         try {
1883                 new_session = new Session (*engine, path, snap_name, input_connect, output_connect,
1884                                            control_channels, master_channels, nphysin, nphysout, initial_length);
1885         }
1886
1887         catch (...) {
1888
1889                 error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
1890                 return -1;
1891         }
1892
1893         connect_to_session (new_session);
1894
1895         session_loaded = true;
1896         return 0;
1897 }
1898
1899 void
1900 ARDOUR_UI::show ()
1901 {
1902         if (editor) {
1903                 editor->show_window ();
1904                 
1905                 if (!shown_flag) {
1906                         editor->present ();
1907                 }
1908
1909                 shown_flag = true;
1910         }
1911 }
1912
1913 void
1914 ARDOUR_UI::show_splash ()
1915 {
1916         if (about == 0) {
1917                 about = new About();
1918                 about->signal_response().connect(mem_fun (*this, &ARDOUR_UI::about_signal_response) );
1919         }
1920         about->present();
1921         flush_pending ();
1922 }
1923
1924 void
1925 ARDOUR_UI::about_signal_response(int response)
1926 {
1927         hide_splash();
1928 }
1929
1930 void
1931 ARDOUR_UI::hide_splash ()
1932 {
1933         if (about) {
1934                 about->get_window()->set_cursor ();
1935                 about->hide();
1936         }
1937 }
1938
1939 void
1940 ARDOUR_UI::display_cleanup_results (Session::cleanup_report& rep, const gchar* list_title, const string & msg)
1941 {
1942         size_t removed;
1943
1944         removed = rep.paths.size();
1945
1946         if (removed == 0) {
1947                 MessageDialog msgd (*editor,
1948                                     _("No audio files were ready for cleanup"), 
1949                                     true,
1950                                     Gtk::MESSAGE_INFO,
1951                                     (Gtk::ButtonsType)(Gtk::BUTTONS_OK)  );
1952                 msgd.set_secondary_text (_("If this seems suprising, \n\
1953 check for any existing snapshots.\n\
1954 These may still include regions that\n\
1955 require some unused files to continue to exist."));
1956         
1957                 msgd.run ();
1958                 return;
1959         } 
1960
1961         ArdourDialog results (_("ardour: cleanup"), true, false);
1962         
1963         struct CleanupResultsModelColumns : public Gtk::TreeModel::ColumnRecord {
1964             CleanupResultsModelColumns() { 
1965                     add (visible_name);
1966                     add (fullpath);
1967             }
1968             Gtk::TreeModelColumn<Glib::ustring> visible_name;
1969             Gtk::TreeModelColumn<Glib::ustring> fullpath;
1970         };
1971
1972         
1973         CleanupResultsModelColumns results_columns;
1974         Glib::RefPtr<Gtk::ListStore> results_model;
1975         Gtk::TreeView results_display;
1976         
1977         results_model = ListStore::create (results_columns);
1978         results_display.set_model (results_model);
1979         results_display.append_column (list_title, results_columns.visible_name);
1980
1981         results_display.set_name ("CleanupResultsList");
1982         results_display.set_headers_visible (true);
1983         results_display.set_headers_clickable (false);
1984         results_display.set_reorderable (false);
1985
1986         Gtk::ScrolledWindow list_scroller;
1987         Gtk::Label txt;
1988         Gtk::VBox dvbox;
1989         Gtk::HBox dhbox;  // the hbox for the image and text
1990         Gtk::HBox ddhbox; // the hbox we eventually pack into the dialog's vbox
1991         Gtk::Image* dimage = manage (new Gtk::Image(Stock::DIALOG_INFO,  Gtk::ICON_SIZE_DIALOG));
1992
1993         dimage->set_alignment(ALIGN_LEFT, ALIGN_TOP);
1994
1995         if (rep.space < 1048576.0f) {
1996                 if (removed > 1) {
1997                   txt.set_text (string_compose (msg, removed, _("files were"), session->path() + "dead_sounds", (float) rep.space / 1024.0f, "kilo"));
1998                 } else {
1999                         txt.set_text (string_compose (msg, removed, _("file was"), session->path() + "dead_sounds", (float) rep.space / 1024.0f, "kilo"));
2000                 }
2001         } else {
2002                 if (removed > 1) {
2003                         txt.set_text (string_compose (msg, removed, _("files were"), session->path() + "dead_sounds", (float) rep.space / 1048576.0f, "mega"));
2004                 } else {
2005                         txt.set_text (string_compose (msg, removed, _("file was"), session->path() + "dead_sounds", (float) rep.space / 1048576.0f, "mega"));
2006                 }
2007         }
2008
2009         dhbox.pack_start (*dimage, true, false, 5);
2010         dhbox.pack_start (txt, true, false, 5);
2011
2012         for (vector<string>::iterator i = rep.paths.begin(); i != rep.paths.end(); ++i) {
2013                 TreeModel::Row row = *(results_model->append());
2014                 row[results_columns.visible_name] = *i;
2015                 row[results_columns.fullpath] = *i;
2016         }
2017         
2018         list_scroller.add (results_display);
2019         list_scroller.set_size_request (-1, 150);
2020         list_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
2021
2022         dvbox.pack_start (dhbox, true, false, 5);
2023         dvbox.pack_start (list_scroller, true, false, 5);
2024         ddhbox.pack_start (dvbox, true, false, 5);
2025
2026         results.get_vbox()->pack_start (ddhbox, true, false, 5);
2027         results.add_button (Stock::CLOSE, RESPONSE_CLOSE);
2028         results.set_default_response (RESPONSE_CLOSE);
2029         results.set_position (Gtk::WIN_POS_MOUSE);
2030         results.show_all_children ();
2031         results.set_resizable (false);
2032
2033         results.run ();
2034
2035 }
2036
2037 void
2038 ARDOUR_UI::cleanup ()
2039 {
2040         if (session == 0) {
2041                 /* shouldn't happen: menu item is insensitive */
2042                 return;
2043         }
2044
2045
2046         MessageDialog  checker (_("Are you sure you want to cleanup?"),
2047                                 true,
2048                                 Gtk::MESSAGE_QUESTION,
2049                                 (Gtk::ButtonsType)(Gtk::BUTTONS_NONE));
2050
2051         checker.set_secondary_text(_("Cleanup is a destructive operation.\n\
2052 ALL undo/redo information will be lost if you cleanup.\n\
2053 After cleanup, unused audio files will be moved to a \
2054 \"dead sounds\" location."));
2055         
2056         checker.add_button (Stock::CANCEL, RESPONSE_CANCEL);
2057         checker.add_button (_("Clean Up"), RESPONSE_ACCEPT);
2058         checker.set_default_response (RESPONSE_CANCEL);
2059
2060         checker.set_name (_("CleanupDialog"));
2061         checker.set_wmclass (_("ardour_cleanup"), "Ardour");
2062         checker.set_position (Gtk::WIN_POS_MOUSE);
2063
2064         switch (checker.run()) {
2065         case RESPONSE_ACCEPT:
2066                 break;
2067         default:
2068                 return;
2069         }
2070
2071         Session::cleanup_report rep;
2072
2073         editor->prepare_for_cleanup ();
2074
2075         if (session->cleanup_sources (rep)) {
2076                 return;
2077         }
2078         checker.hide();
2079         display_cleanup_results (rep, 
2080                                  _("cleaned files"),
2081                                  _("\
2082 The following %1 %2 not in use and \n\
2083 have been moved to:\n\
2084 %3. \n\n\
2085 Flushing the wastebasket will \n\
2086 release an additional\n\
2087 %4 %5bytes of disk space.\n"
2088                                          ));
2089 }
2090
2091 void
2092 ARDOUR_UI::flush_trash ()
2093 {
2094         if (session == 0) {
2095                 /* shouldn't happen: menu item is insensitive */
2096                 return;
2097         }
2098
2099         Session::cleanup_report rep;
2100
2101         if (session->cleanup_trash_sources (rep)) {
2102                 return;
2103         }
2104
2105         display_cleanup_results (rep, 
2106                                  _("deleted file"),
2107                                  _("The following %1 %2 deleted from\n\
2108 %3,\n\
2109 releasing %4 %5bytes of disk space"));
2110 }
2111
2112 void
2113 ARDOUR_UI::add_route ()
2114 {
2115         int count;
2116
2117         if (!session) {
2118                 return;
2119         }
2120
2121         if (add_route_dialog == 0) {
2122                 add_route_dialog = new AddRouteDialog;
2123                 editor->ensure_float (*add_route_dialog);
2124         }
2125
2126         if (add_route_dialog->is_visible()) {
2127                 /* we're already doing this */
2128                 return;
2129         }
2130
2131         ResponseType r = (ResponseType) add_route_dialog->run ();
2132         
2133         add_route_dialog->hide();
2134
2135         switch (r) {
2136         case RESPONSE_ACCEPT:
2137                 break;
2138         default:
2139                 return;
2140                 break;
2141         }
2142
2143         if ((count = add_route_dialog->count()) <= 0) {
2144                 return;
2145         }
2146
2147         uint32_t input_chan = add_route_dialog->channels ();
2148         uint32_t output_chan;
2149         string name_template = add_route_dialog->name_template ();
2150         bool track = add_route_dialog->track ();
2151
2152         AutoConnectOption oac = Config->get_output_auto_connect();
2153
2154         if (oac & AutoConnectMaster) {
2155                 output_chan = (session->master_out() ? session->master_out()->n_inputs() : input_chan);
2156         } else {
2157                 output_chan = input_chan;
2158         }
2159
2160         /* XXX do something with name template */
2161
2162         if (track) {
2163                 session_add_audio_track (input_chan, output_chan, add_route_dialog->mode(), count);
2164         } else {
2165                 session_add_audio_bus (input_chan, output_chan, count);
2166         }
2167 }
2168
2169 XMLNode*
2170 ARDOUR_UI::mixer_settings () const
2171 {
2172         XMLNode* node = 0;
2173
2174         if (session) {
2175                 node = session->instant_xml(X_("Mixer"), session->path());
2176         } else {
2177                 node = Config->instant_xml(X_("Mixer"), get_user_ardour_path());
2178         }
2179
2180         if (!node) {
2181                 node = new XMLNode (X_("Mixer"));
2182         }
2183
2184         return node;
2185 }
2186
2187 XMLNode*
2188 ARDOUR_UI::editor_settings () const
2189 {
2190         XMLNode* node = 0;
2191
2192         if (session) {
2193                 node = session->instant_xml(X_("Editor"), session->path());
2194         } else {
2195                 node = Config->instant_xml(X_("Editor"), get_user_ardour_path());
2196         }
2197
2198         if (!node) {
2199                 node = new XMLNode (X_("Editor"));
2200         }
2201         return node;
2202 }
2203
2204 XMLNode*
2205 ARDOUR_UI::keyboard_settings () const
2206 {
2207         XMLNode* node = 0;
2208
2209         node = Config->extra_xml(X_("Keyboard"));
2210         
2211         if (!node) {
2212                 node = new XMLNode (X_("Keyboard"));
2213         }
2214         return node;
2215 }
2216
2217 void
2218 ARDOUR_UI::halt_on_xrun_message ()
2219 {
2220         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::halt_on_xrun_message));
2221
2222         MessageDialog msg (*editor,
2223                            _("Recording was stopped because your system could not keep up."));
2224         msg.run ();
2225 }
2226
2227 void
2228 ARDOUR_UI::disk_overrun_handler ()
2229 {
2230         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
2231
2232         if (!have_disk_overrun_displayed) {
2233                 have_disk_overrun_displayed = true;
2234                 MessageDialog msg (*editor, X_("diskrate dialog"), _("\
2235 The disk system on your computer\n\
2236 was not able to keep up with Ardour.\n\
2237 \n\
2238 Specifically, it failed to write data to disk\n\
2239 quickly enough to keep up with recording.\n"));
2240                 msg.run ();
2241                 have_disk_overrun_displayed = false;
2242         }
2243 }
2244
2245 void
2246 ARDOUR_UI::disk_underrun_handler ()
2247 {
2248         ENSURE_GUI_THREAD (mem_fun(*this, &ARDOUR_UI::disk_underrun_handler));
2249
2250         if (!have_disk_underrun_displayed) {
2251                 have_disk_underrun_displayed = true;
2252                 MessageDialog msg (*editor,
2253                         (_("The disk system on your computer\n\
2254 was not able to keep up with Ardour.\n\
2255 \n\
2256 Specifically, it failed to read data from disk\n\
2257 quickly enough to keep up with playback.\n")));
2258                 msg.run ();
2259                 have_disk_underrun_displayed = false;
2260         } 
2261 }
2262
2263 void
2264 ARDOUR_UI::disk_underrun_message_gone ()
2265 {
2266         have_disk_underrun_displayed = false;
2267 }
2268
2269 void
2270 ARDOUR_UI::disk_overrun_message_gone ()
2271 {
2272         have_disk_underrun_displayed = false;
2273 }
2274
2275 int
2276 ARDOUR_UI::pending_state_dialog ()
2277 {
2278         ArdourDialog dialog ("pending state dialog");
2279         Label  message (_("\
2280 This session appears to have been in\n\
2281 middle of recording when ardour or\n\
2282 the computer was shutdown.\n\
2283 \n\
2284 Ardour can recover any captured audio for\n\
2285 you, or it can ignore it. Please decide\n\
2286 what you would like to do.\n"));
2287
2288         dialog.get_vbox()->pack_start (message);
2289         dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
2290         dialog.add_button (_("Ignore crash data"), RESPONSE_REJECT);
2291
2292         dialog.set_position (WIN_POS_CENTER);
2293         dialog.show_all ();
2294         
2295         switch (dialog.run ()) {
2296         case RESPONSE_ACCEPT:
2297                 return 1;
2298         default:
2299                 return 0;
2300         }
2301 }
2302         
2303 void
2304 ARDOUR_UI::disconnect_from_jack ()
2305 {
2306         if (engine) {
2307                 if( engine->disconnect_from_jack ()) {
2308                         MessageDialog msg (*editor, _("Could not disconnect from JACK"));
2309                         msg.run ();
2310                 }
2311
2312                 update_sample_rate (0);
2313         }
2314 }
2315
2316 void
2317 ARDOUR_UI::reconnect_to_jack ()
2318 {
2319         if (engine) {
2320                 if (engine->reconnect_to_jack ()) {
2321                         MessageDialog msg (*editor,  _("Could not reconnect to JACK"));
2322                         msg.run ();
2323                 }
2324
2325                 update_sample_rate (0);
2326         }
2327 }
2328
2329 void
2330 ARDOUR_UI::set_jack_buffer_size (nframes_t nframes)
2331 {
2332         engine->request_buffer_size (nframes);
2333         update_sample_rate (0);
2334 }
2335
2336 int
2337 ARDOUR_UI::cmdline_new_session (string path)
2338 {
2339         if (path[0] != '/') {
2340                 char buf[PATH_MAX+1];
2341                 string str;
2342
2343                 getcwd (buf, sizeof (buf));
2344                 str = buf;
2345                 str += '/';
2346                 str += path;
2347                 path = str;
2348         }
2349
2350         new_session (false, path);
2351
2352         _will_create_new_session_automatically = false; /* done it */
2353         return FALSE; /* don't call it again */
2354 }
2355
2356 void
2357 ARDOUR_UI::use_config ()
2358 {
2359         Glib::RefPtr<Action> act;
2360
2361         switch (Config->get_native_file_data_format ()) {
2362         case FormatFloat:
2363                 act = ActionManager::get_action (X_("options"), X_("FileDataFormatFloat"));
2364                 break;
2365         case FormatInt24:
2366                 act = ActionManager::get_action (X_("options"), X_("FileDataFormat24bit"));
2367                 break;
2368         }
2369
2370         if (act) {
2371                 Glib::RefPtr<RadioAction> ract = Glib::RefPtr<RadioAction>::cast_dynamic(act);
2372                 ract->set_active ();
2373         }       
2374
2375         switch (Config->get_native_file_header_format ()) {
2376         case BWF:
2377                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatBWF"));
2378                 break;
2379         case WAVE:
2380                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatWAVE"));
2381                 break;
2382         case WAVE64:
2383                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatWAVE64"));
2384                 break;
2385         case iXML:
2386                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatiXML"));
2387                 break;
2388         case RF64:
2389                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatRF64"));
2390                 break;
2391         case CAF:
2392                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatCAF"));
2393                 break;
2394         case AIFF:
2395                 act = ActionManager::get_action (X_("options"), X_("FileHeaderFormatAIFF"));
2396                 break;
2397         }
2398
2399         if (act) {
2400                 Glib::RefPtr<RadioAction> ract = Glib::RefPtr<RadioAction>::cast_dynamic(act);
2401                 ract->set_active ();
2402         }       
2403 }
2404
2405 void
2406 ARDOUR_UI::update_transport_clocks (nframes_t pos)
2407 {
2408         primary_clock.set (pos);
2409         secondary_clock.set (pos);
2410
2411         if (big_clock_window) {
2412                 big_clock.set (pos);
2413         }
2414 }
2415
2416 void
2417 ARDOUR_UI::record_state_changed ()
2418 {
2419         if (!session || !big_clock_window) {
2420                 /* why bother - the clock isn't visible */
2421                 return;
2422         }
2423
2424         switch (session->record_status()) {
2425         case Session::Recording:
2426                 big_clock.set_name ("BigClockRecording");
2427                 break;
2428         default:
2429                 big_clock.set_name ("BigClockNonRecording");
2430                 break;
2431         }
2432 }