gtk2_ardour/io_selector.cc

   1 /*
   2     Copyright (C) 2002-2003 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 <map>
  21 #include <vector>
  22
  23 #include <sigc++/bind.h>
  24
  25 #include <gtkmm/messagedialog.h>
  26
  27 #include <glibmm/thread.h>
  28
  29 #include <ardour/io.h>
  30 #include <ardour/route.h>
  31 #include <ardour/audioengine.h>
  32 #include <ardour/port.h>
  33 #include <ardour/mtdm.h>
  34 #include <ardour/insert.h>
  35 #include <ardour/session.h>
  36 #include <ardour/audio_diskstream.h>
  37
  38 #include <gtkmm2ext/doi.h>
  39 #include <gtkmm2ext/gtk_ui.h>
  40 #include <gtkmm2ext/utils.h>
  41
  42 #include "utils.h"
  43 #include "io_selector.h"
  44 #include "keyboard.h"
  45 #include "gui_thread.h"
  46
  47 #include "i18n.h"
  48
  49 using namespace std;
  50 using namespace Gtk;
  51 using namespace Glib;
  52 using namespace sigc;
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Gtkmm2ext;
  56
  57 IOSelectorWindow::IOSelectorWindow (Session& sess, boost::shared_ptr<IO> ior, bool input, bool can_cancel)
  58         : ArdourDialog ("i/o selector"),
  59           _selector (sess, ior, input),
  60           ok_button (can_cancel ? _("OK"): _("Close")),
  61           cancel_button (_("Cancel")),
  62           rescan_button (_("Rescan"))
  63
  64 {
  65         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
  66         set_name ("IOSelectorWindow");
  67
  68         string title;
  69         if (input) {
  70                 title = string_compose(_("%1 input"), ior->name());
  71         } else {
  72                 title = string_compose(_("%1 output"), ior->name());
  73         }
  74
  75         ok_button.set_name ("IOSelectorButton");
  76         cancel_button.set_name ("IOSelectorButton");
  77         rescan_button.set_name ("IOSelectorButton");
  78
  79         button_box.set_spacing (5);
  80         button_box.set_border_width (5);
  81         button_box.set_homogeneous (true);
  82         button_box.pack_start (rescan_button);
  83
  84         if (can_cancel) {
  85                 button_box.pack_start (cancel_button);
  86         } else {
  87                 cancel_button.hide();
  88         }
  89
  90         button_box.pack_start (ok_button);
  91
  92         get_vbox()->pack_start (_selector);
  93         get_vbox()->pack_start (button_box, false, false);
  94
  95         ok_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::accept));
  96         cancel_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::cancel));
  97         rescan_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::rescan));
  98
  99         set_title (title);
 100         set_position (WIN_POS_MOUSE);
 101
 102         signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));
 103 }
 104
 105 IOSelectorWindow::~IOSelectorWindow()
 106 {
 107 }
 108
 109 void
 110 IOSelectorWindow::rescan ()
 111 {
 112         _selector.redisplay ();
 113 }
 114
 115 void
 116 IOSelectorWindow::cancel ()
 117 {
 118         _selector.Finished(IOSelector::Cancelled);
 119         hide ();
 120 }
 121
 122 void
 123 IOSelectorWindow::accept ()
 124 {
 125         _selector.Finished(IOSelector::Accepted);
 126         hide ();
 127 }
 128
 129 void
 130 IOSelectorWindow::on_map ()
 131 {
 132         _selector.redisplay ();
 133         Window::on_map ();
 134 }
 135
 136 /*************************
 137   The IO Selector "widget"
 138  *************************/
 139
 140 IOSelector::IOSelector (Session& sess, boost::shared_ptr<IO> ior, bool input)
 141         : session (sess),
 142           io (ior),
 143           for_input (input),
 144           port_frame (for_input? _("Inputs") : _("Outputs")),
 145           add_port_button (for_input? _("Add") : _("Add")),
 146           remove_port_button (for_input? _("Remove") : _("Remove")),
 147           clear_connections_button (_("Disconnect All"))
 148 {
 149         selected_port = 0;
 150
 151         notebook.set_name ("IOSelectorNotebook");
 152         notebook.set_size_request (-1, 125);
 153
 154         clear_connections_button.set_name ("IOSelectorButton");
 155         add_port_button.set_name ("IOSelectorButton");
 156         remove_port_button.set_name ("IOSelectorButton");
 157
 158         selector_frame.set_name ("IOSelectorFrame");
 159         port_frame.set_name ("IOSelectorFrame");
 160
 161         selector_frame.set_label (_("Available connections"));
 162
 163         selector_button_box.set_spacing (5);
 164         selector_button_box.set_border_width (5);
 165
 166         selector_box.set_spacing (5);
 167         selector_box.set_border_width (5);
 168         selector_box.pack_start (notebook);
 169         selector_box.pack_start (selector_button_box, false, false);
 170
 171         selector_frame.add (selector_box);
 172
 173         port_box.set_spacing (5);
 174         port_box.set_border_width (5);
 175
 176         port_display_scroller.set_name ("IOSelectorNotebook");
 177         port_display_scroller.set_border_width (0);
 178         port_display_scroller.set_size_request (-1, 170);
 179         port_display_scroller.add (port_box);
 180         port_display_scroller.set_policy (POLICY_NEVER,
 181                                           POLICY_AUTOMATIC);
 182
 183         port_button_box.set_spacing (5);
 184         port_button_box.set_border_width (5);
 185
 186         port_button_box.pack_start (add_port_button, false, false);
 187         port_button_box.pack_start (remove_port_button, false, false);
 188         port_button_box.pack_start (clear_connections_button, false, false);
 189
 190         port_and_button_box.set_border_width (5);
 191         port_and_button_box.pack_start (port_button_box, false, false);
 192         port_and_button_box.pack_start (port_display_scroller);
 193
 194         port_frame.add (port_and_button_box);
 195
 196         port_and_selector_box.set_spacing (5);
 197         port_and_selector_box.pack_start (port_frame);
 198         port_and_selector_box.pack_start (selector_frame);
 199
 200         set_spacing (5);
 201         set_border_width (5);
 202         pack_start (port_and_selector_box);
 203
 204         rescan();
 205         display_ports ();
 206
 207         clear_connections_button.signal_clicked().connect (mem_fun(*this, &IOSelector::clear_connections));
 208
 209         add_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::add_port));
 210         remove_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::remove_port));
 211
 212         if (for_input) {
 213                 io->input_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
 214         } else {
 215                 io->output_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
 216         }
 217
 218         set_button_sensitivity ();
 219
 220         io->name_changed.connect (mem_fun(*this, &IOSelector::name_changed));
 221 }
 222
 223 IOSelector::~IOSelector ()
 224 {
 225 }
 226
 227 void
 228 IOSelector::set_button_sensitivity ()
 229 {
 230         if (for_input) {
 231
 232                 if (io->input_maximum() < 0 || io->input_maximum() > (int) io->n_inputs()) {
 233                         add_port_button.set_sensitive (true);
 234                 } else {
 235                         add_port_button.set_sensitive (false);
 236                 }
 237
 238         } else {
 239
 240                 if (io->output_maximum() < 0 || io->output_maximum() > (int) io->n_outputs()) {
 241                         add_port_button.set_sensitive (true);
 242                 } else {
 243                         add_port_button.set_sensitive (false);
 244                 }
 245
 246         }
 247
 248         if (for_input) {
 249                 if (io->n_inputs() && (io->input_minimum() < 0 || io->input_minimum() < (int) io->n_inputs())) {
 250                         remove_port_button.set_sensitive (true);
 251                 } else {
 252                         remove_port_button.set_sensitive (false);
 253                 }
 254
 255         } else {
 256                 if (io->n_outputs() && (io->output_minimum() < 0 || io->output_minimum() < (int) io->n_outputs())) {
 257                         remove_port_button.set_sensitive (true);
 258                 } else {
 259                         remove_port_button.set_sensitive (false);
 260                 }
 261         }
 262 }
 263
 264
 265 void
 266 IOSelector::name_changed (void* src)
 267 {
 268         ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::name_changed), src));
 269
 270         display_ports ();
 271 }
 272
 273 void
 274 IOSelector::clear_connections ()
 275 {
 276         if (for_input) {
 277                 io->disconnect_inputs (this);
 278         } else {
 279                 io->disconnect_outputs (this);
 280         }
 281 }
 282
 283 void
 284 IOSelector::rescan ()
 285 {
 286         using namespace Notebook_Helpers;
 287
 288         typedef std::map<string,vector<pair<string,string> > > PortMap;
 289         PortMap portmap;
 290         const char **ports;
 291         PageList& pages = notebook.pages();
 292         gint current_page;
 293         vector<string> rowdata;
 294
 295         page_selection_connection.disconnect ();
 296
 297         current_page = notebook.get_current_page ();
 298
 299         pages.clear ();
 300
 301         /* get relevant current JACK ports */
 302
 303         ports = session.engine().get_ports ("", JACK_DEFAULT_AUDIO_TYPE, for_input ? JackPortIsOutput : JackPortIsInput);
 304
 305         if (ports == 0) {
 306                 return;
 307         }
 308
 309         /* find all the client names and group their ports into a list-by-client */
 310
 311         for (int n = 0; ports[n]; ++n) {
 312
 313                 pair<string,vector<pair<string,string> > > newpair;
 314                 pair<string,string> strpair;
 315                 pair<PortMap::iterator,bool> result;
 316
 317                 string str = ports[n];
 318                 string::size_type pos;
 319                 string portname;
 320
 321                 pos = str.find (':');
 322
 323                 newpair.first = str.substr (0, pos);
 324                 portname = str.substr (pos+1);
 325
 326                 result = portmap.insert (newpair);
 327
 328                 strpair.first = portname;
 329                 strpair.second = str;
 330
 331                 result.first->second.push_back (strpair);
 332         }
 333
 334         PortMap::iterator i;
 335
 336         for (i = portmap.begin(); i != portmap.end(); ++i) {
 337
 338                 Box *client_box = manage (new VBox);
 339                 TreeView *display = manage (new TreeView);
 340                 RefPtr<ListStore> model = ListStore::create (port_display_columns);
 341                 ScrolledWindow *scroller = manage (new ScrolledWindow);
 342
 343                 display->set_model (model);
 344                 display->append_column (X_("notvisible"), port_display_columns.displayed_name);
 345                 display->set_headers_visible (false);
 346                 display->get_selection()->set_mode (SELECTION_SINGLE);
 347                 display->set_name ("IOSelectorList");
 348
 349                 for (vector<pair<string,string> >::iterator s = i->second.begin(); s != i->second.end(); ++s) {
 350
 351                         TreeModel::Row row = *(model->append ());
 352
 353                         row[port_display_columns.displayed_name] = s->first;
 354                         row[port_display_columns.full_name] = s->second;
 355                 }
 356
 357                 display->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::port_selection_changed), display));
 358                 Label *tab_label = manage (new Label);
 359
 360                 tab_label->set_name ("IOSelectorNotebookTab");
 361                 tab_label->set_text ((*i).first);
 362
 363                 scroller->add (*display);
 364                 scroller->set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);
 365
 366                 client_box->pack_start (*scroller);
 367
 368                 pages.push_back (TabElem (*client_box, *tab_label));
 369         }
 370
 371         notebook.set_current_page (current_page);
 372         page_selection_connection = notebook.signal_show().connect (bind (mem_fun (notebook, &Notebook::set_current_page), current_page));
 373         selector_box.show_all ();
 374 }
 375
 376 void
 377 IOSelector::display_ports ()
 378 {
 379         TreeView *firsttview = 0;
 380         TreeView *selected_port_tview = 0;
 381         {
 382                 Glib::Mutex::Lock lm  (port_display_lock);
 383                 Port *port;
 384                 uint32_t limit;
 385
 386                 if (for_input) {
 387                         limit = io->n_inputs();
 388                 } else {
 389                         limit = io->n_outputs();
 390                 }
 391
 392                 for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
 393
 394                         slist<TreeView *>::iterator tmp;
 395
 396                         tmp = i;
 397                         ++tmp;
 398
 399                         port_box.remove (**i);
 400                         delete *i;
 401                         port_displays.erase (i);
 402
 403                         i = tmp;
 404                 }
 405
 406                 for (uint32_t n = 0; n < limit; ++n) {
 407
 408                         TreeView* tview;
 409                         //ScrolledWindow *scroller;
 410                         string really_short_name;
 411
 412                         if (for_input) {
 413                                 port = io->input (n);
 414                         } else {
 415                                 port = io->output (n);
 416                         }
 417
 418                         /* we know there is '/' because we put it there */
 419
 420                         really_short_name = port->short_name();
 421                         really_short_name = really_short_name.substr (really_short_name.find ('/') + 1);
 422
 423                         tview = manage (new TreeView());
 424                         RefPtr<ListStore> port_model = ListStore::create (port_display_columns);
 425
 426                         if (!firsttview) {
 427                                 firsttview = tview;
 428                         }
 429
 430                         tview->set_model (port_model);
 431                         tview->append_column (really_short_name, port_display_columns.displayed_name);
 432                         tview->get_selection()->set_mode (SELECTION_SINGLE);
 433                         tview->set_data (X_("port"), port);
 434                         tview->set_headers_visible (true);
 435                         tview->set_name (X_("IOSelectorPortList"));
 436
 437                         port_box.pack_start (*tview);
 438                         port_displays.insert (port_displays.end(), tview);
 439
 440                         /* now fill the clist with the current connections */
 441
 442                         const char **connections = port->get_connections ();
 443
 444                         if (connections) {
 445                                 for (uint32_t c = 0; connections[c]; ++c) {
 446                                         TreeModel::Row row = *(port_model->append());
 447                                         row[port_display_columns.displayed_name] = connections[c];
 448                                         row[port_display_columns.full_name] = connections[c];
 449                                 }
 450                         }
 451
 452                         if (for_input) {
 453
 454                                 if (io->input_maximum() == 1) {
 455                                         selected_port = port;
 456                                         selected_port_tview = tview;
 457                                 } else {
 458                                         if (port == selected_port) {
 459                                                 selected_port_tview = tview;
 460                                         }
 461                                 }
 462
 463                         } else {
 464
 465                                 if (io->output_maximum() == 1) {
 466                                         selected_port = port;
 467                                         selected_port_tview = tview;
 468                                 } else {
 469                                         if (port == selected_port) {
 470                                                 selected_port_tview = tview;
 471                                         }
 472                                 }
 473                         }
 474
 475                         TreeViewColumn* col = tview->get_column (0);
 476
 477                         col->set_clickable (true);
 478
 479                         /* handle button events on the column header ... */
 480                         col->signal_clicked().connect (bind (mem_fun(*this, &IOSelector::select_treeview), tview));
 481
 482                         /* ... and within the treeview itself */
 483                         tview->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::connection_button_release), tview));
 484                 }
 485
 486                 port_box.show_all ();
 487         }
 488
 489         if (!selected_port_tview) {
 490                 selected_port_tview = firsttview;
 491         }
 492
 493         if (selected_port_tview) {
 494                 select_treeview (selected_port_tview);
 495         }
 496 }
 497
 498 bool
 499 IOSelector::port_selection_changed (GdkEventButton *ev, TreeView* treeview)
 500 {
 501         TreeModel::iterator i = treeview->get_selection()->get_selected();
 502         int status;
 503
 504         if (!i) {
 505                 return 0;
 506         }
 507
 508         if (selected_port == 0) {
 509                 return 0;
 510         }
 511
 512         ustring other_port_name = (*i)[port_display_columns.full_name];
 513
 514         if (for_input) {
 515                 if ((status = io->connect_input (selected_port, other_port_name, this)) == 0) {
 516                         Port *p = session.engine().get_port_by_name (other_port_name);
 517                         p->enable_metering();
 518                 }
 519         } else {
 520                 status = io->connect_output (selected_port, other_port_name, this);
 521         }
 522
 523         if (status == 0) {
 524                 select_next_treeview ();
 525         }
 526
 527         treeview->get_selection()->unselect_all();
 528         return 0;
 529 }
 530
 531 void
 532 IOSelector::ports_changed (IOChange change, void *src)
 533 {
 534         ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::ports_changed), change, src));
 535
 536         display_ports ();
 537 }
 538
 539 void
 540 IOSelector::add_port ()
 541 {
 542         /* add a new port, then hide the button if we're up to the maximum allowed */
 543
 544         if (for_input) {
 545
 546                 try {
 547                         io->add_input_port ("", this);
 548                 }
 549
 550                 catch (AudioEngine::PortRegistrationFailure& err) {
 551                         MessageDialog msg (_("There are no more JACK ports available."));
 552                         msg.run ();
 553                 }
 554
 555         } else {
 556
 557                 try {
 558                         io->add_output_port ("", this);
 559                 }
 560
 561                 catch (AudioEngine::PortRegistrationFailure& err) {
 562                         MessageDialog msg (_("There are no more JACK ports available."));
 563                         msg.run ();
 564                 }
 565         }
 566
 567         set_button_sensitivity ();
 568 }
 569
 570 void
 571 IOSelector::remove_port ()
 572 {
 573         uint32_t nports;
 574
 575         // always remove last port
 576
 577         if (for_input) {
 578                 if ((nports = io->n_inputs()) > 0) {
 579                         io->remove_input_port (io->input(nports-1), this);
 580                 }
 581
 582         } else {
 583                 if ((nports = io->n_outputs()) > 0) {
 584                         io->remove_output_port (io->output(nports-1), this);
 585                 }
 586         }
 587
 588         set_button_sensitivity ();
 589 }
 590
 591 gint
 592 IOSelector::connection_button_release (GdkEventButton *ev, TreeView *treeview)
 593 {
 594         /* this handles button release on a port name row: i.e. a connection
 595            between the named port and the port represented by the treeview.
 596         */
 597
 598         Gtk::TreeModel::iterator iter;
 599         TreeModel::Path path;
 600         TreeViewColumn* column;
 601         int cellx;
 602         int celly;
 603
 604         /* only handle button1 events here */
 605
 606         if (ev->button != 1) {
 607                 return false;
 608         }
 609
 610         if (!treeview->get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
 611                 return false;
 612         }
 613
 614         if ((iter = treeview->get_model()->get_iter (path.to_string()))) {
 615
 616                 /* path is valid */
 617                 ustring connected_port_name = (*iter)[port_display_columns.full_name];
 618                 Port *port = reinterpret_cast<Port *> (treeview->get_data (X_("port")));
 619
 620                 if (for_input) {
 621                         Port *p = session.engine().get_port_by_name (connected_port_name);
 622                         p->disable_metering();
 623                         io->disconnect_input (port, connected_port_name, this);
 624                 } else {
 625                         io->disconnect_output (port, connected_port_name, this);
 626                 }
 627         }
 628
 629         return true;
 630 }
 631
 632 void
 633 IOSelector::select_next_treeview ()
 634 {
 635         slist<TreeView*>::iterator next;
 636
 637         if (port_displays.empty() || port_displays.size() == 1) {
 638                 return;
 639         }
 640
 641         for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
 642
 643                 if ((*i)->get_name() == "IOSelectorPortListSelected") {
 644
 645                         ++i;
 646
 647                         if (i == port_displays.end()) {
 648                                 select_treeview (port_displays.front());
 649                         } else {
 650                                 select_treeview (*i);
 651                         }
 652
 653                         break;
 654                 }
 655         }
 656 }
 657
 658 void
 659 IOSelector::select_treeview (TreeView* tview)
 660 {
 661         /* Gack. TreeView's don't respond visually to a change
 662            in their state, so rename them to force a style
 663            switch.
 664         */
 665
 666         Glib::Mutex::Lock lm  (port_display_lock);
 667         Port* port = reinterpret_cast<Port *> (tview->get_data (X_("port")));
 668
 669         selected_port = port;
 670
 671         tview->set_name ("IOSelectorPortListSelected");
 672         tview->queue_draw ();
 673
 674         /* ugly hack to force the column header button to change as well */
 675
 676         TreeViewColumn* col = tview->get_column (0);
 677         GtkTreeViewColumn* ccol = col->gobj();
 678
 679         if (ccol->button) {
 680                 gtk_widget_set_name (ccol->button, "IOSelectorPortListSelected");
 681                 gtk_widget_queue_draw (ccol->button);
 682         }
 683
 684         for (slist<TreeView*>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
 685                 if (*i == tview) {
 686                         continue;
 687                 }
 688
 689                 col = (*i)->get_column (0);
 690                 ccol = col->gobj();
 691
 692                 if (ccol->button) {
 693                         gtk_widget_set_name (ccol->button, "IOSelectorPortList");
 694                         gtk_widget_queue_draw (ccol->button);
 695                 }
 696
 697                 (*i)->set_name ("IOSelectorPortList");
 698                 (*i)->queue_draw ();
 699         }
 700
 701         selector_box.show_all ();
 702 }
 703
 704 void
 705 IOSelector::redisplay ()
 706 {
 707         display_ports ();
 708
 709         if (for_input) {
 710                 if (io->input_maximum() != 0) {
 711                         rescan ();
 712                 }
 713         } else {
 714                 if (io->output_maximum() != 0) {
 715                         rescan();
 716                 }
 717         }
 718 }
 719
 720 PortInsertUI::PortInsertUI (Session& sess, boost::shared_ptr<PortInsert> pi)
 721         : _pi (pi)
 722         , latency_button (_("Measure Latency"))
 723         , input_selector (sess, pi, true)
 724         , output_selector (sess, pi, false)
 725 {
 726         latency_hbox.pack_start (latency_button, false, false);
 727         latency_hbox.pack_start (latency_display, false, false);
 728         latency_frame.add (latency_hbox);
 729
 730         hbox.pack_start (output_selector, true, true);
 731         hbox.pack_start (input_selector, true, true);
 732
 733         set_spacing (6);
 734         set_border_width (12);
 735
 736         pack_start (latency_frame);
 737         pack_start (hbox);
 738
 739         update_latency_display();
 740
 741         latency_button.signal_toggled().connect (mem_fun (*this, &PortInsertUI::latency_button_toggled));
 742 }
 743
 744 void
 745 PortInsertUI::update_latency_display ()
 746 {
 747         nframes_t sample_rate = input_selector.session.engine().frame_rate();
 748         if (sample_rate == 0) {
 749                 latency_display.set_text (_("Disconnected from audio engine"));
 750         } else {
 751                 char buf[64];
 752                 snprintf (buf, sizeof (buf), "%10.3lf frames %10.3lf ms", (float)_pi->latency(), (float)_pi->latency() * 1000.0f/sample_rate);
 753                 latency_display.set_text(buf);
 754         }
 755 }
 756
 757 bool
 758 PortInsertUI::check_latency_measurement ()
 759 {
 760         MTDM* mtdm = _pi->mtdm ();
 761
 762         if (mtdm->resolve () < 0) {
 763                 latency_display.set_text (_("No signal detected"));
 764                 return true;
 765         }
 766
 767         if (mtdm->err () > 0.3) {
 768                 mtdm->invert ();
 769                 mtdm->resolve ();
 770         }
 771
 772         char buf[128];
 773         nframes_t sample_rate = input_selector.session.engine().frame_rate();
 774
 775         if (sample_rate == 0) {
 776                 latency_display.set_text (_("Disconnected from audio engine"));
 777                 _pi->stop_latency_detection ();
 778                 return false;
 779         }
 780
 781         snprintf (buf, sizeof (buf), "%10.3lf frames %10.3lf ms", mtdm->del (), mtdm->del () * 1000.0f/sample_rate);
 782
 783         bool solid = true;
 784
 785         if (mtdm->err () > 0.2) {
 786                 strcat (buf, " ??");
 787                 solid = false;
 788         }
 789
 790         if (mtdm->inv ()) {
 791                 strcat (buf, " (Inv)");
 792                 solid = false;
 793         }
 794
 795         if (solid) {
 796                 _pi->set_measured_latency ((nframes_t) rint (mtdm->del()));
 797                 strcat (buf, " (set)");
 798                 latency_button.set_active (false);
 799         }
 800
 801         latency_display.set_text (buf);
 802         return true;
 803 }
 804
 805 void
 806 PortInsertUI::latency_button_toggled ()
 807 {
 808         if (latency_button.get_active ()) {
 809
 810                 _pi->start_latency_detection ();
 811                 latency_display.set_text (_("Detecting ..."));
 812                 latency_timeout = Glib::signal_timeout().connect (mem_fun (*this, &PortInsertUI::check_latency_measurement), 250);
 813
 814         } else {
 815                 _pi->stop_latency_detection ();
 816                 latency_timeout.disconnect ();
 817         }
 818 }
 819
 820 void
 821 PortInsertUI::redisplay()
 822 {
 823         input_selector.redisplay();
 824         output_selector.redisplay();
 825 }
 826
 827 void
 828 PortInsertUI::finished(IOSelector::Result r)
 829 {
 830         input_selector.Finished (r);
 831         output_selector.Finished (r);
 832 }
 833
 834
 835 PortInsertWindow::PortInsertWindow (Session& sess, boost::shared_ptr<PortInsert> pi, bool can_cancel)
 836         : ArdourDialog ("port insert dialog"),
 837           _portinsertui (sess, pi),
 838           ok_button (can_cancel ? _("OK"): _("Close")),
 839           cancel_button (_("Cancel")),
 840           rescan_button (_("Rescan"))
 841 {
 842
 843         set_name ("IOSelectorWindow");
 844         string title = _("ardour: ");
 845         title += pi->name();
 846         set_title (title);
 847
 848         ok_button.set_name ("IOSelectorButton");
 849         cancel_button.set_name ("IOSelectorButton");
 850         rescan_button.set_name ("IOSelectorButton");
 851
 852         button_box.set_spacing (5);
 853         button_box.set_border_width (5);
 854         button_box.set_homogeneous (true);
 855         button_box.pack_start (rescan_button);
 856         if (can_cancel) {
 857                 button_box.pack_start (cancel_button);
 858         }
 859         else {
 860                 cancel_button.hide();
 861         }
 862         button_box.pack_start (ok_button);
 863
 864         get_vbox()->pack_start (_portinsertui);
 865         get_vbox()->pack_start (button_box, false, false);
 866
 867         ok_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::accept));
 868         cancel_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::cancel));
 869         rescan_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::rescan));
 870
 871         signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));
 872
 873         going_away_connection = pi->GoingAway.connect (mem_fun(*this, &PortInsertWindow::plugin_going_away));
 874 }
 875
 876 void
 877 PortInsertWindow::plugin_going_away ()
 878 {
 879         ENSURE_GUI_THREAD(mem_fun(*this, &PortInsertWindow::plugin_going_away));
 880         going_away_connection.disconnect ();
 881         delete_when_idle (this);
 882 }
 883
 884 void
 885 PortInsertWindow::on_map ()
 886 {
 887         _portinsertui.redisplay ();
 888         Window::on_map ();
 889 }
 890
 891
 892 void
 893 PortInsertWindow::rescan ()
 894 {
 895         _portinsertui.redisplay();
 896 }
 897
 898 void
 899 PortInsertWindow::cancel ()
 900 {
 901         _portinsertui.finished(IOSelector::Cancelled);
 902         hide ();
 903 }
 904
 905 void
 906 PortInsertWindow::accept ()
 907 {
 908         _portinsertui.finished(IOSelector::Accepted);
 909         hide ();
 910 }