gtk2_ardour/generic_pluginui.cc

   1 /*
   2     Copyright (C) 2000 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 <climits>
  21 #include <cerrno>
  22 #include <cmath>
  23 #include <string>
  24
  25 #include <pbd/stl_delete.h>
  26 #include <pbd/xml++.h>
  27 #include <pbd/failed_constructor.h>
  28
  29 #include <gtkmm2ext/click_box.h>
  30 #include <gtkmm2ext/fastmeter.h>
  31 #include <gtkmm2ext/barcontroller.h>
  32 #include <gtkmm2ext/utils.h>
  33 #include <gtkmm2ext/doi.h>
  34 #include <gtkmm2ext/slider_controller.h>
  35
  36 #include <midi++/manager.h>
  37
  38 #include <ardour/plugin.h>
  39 #include <ardour/insert.h>
  40 #include <ardour/ladspa_plugin.h>
  41 #ifdef HAVE_LV2
  42 #include <ardour/lv2_plugin.h>
  43 #endif
  44
  45 #include <lrdf.h>
  46
  47 #include "ardour_ui.h"
  48 #include "prompter.h"
  49 #include "plugin_ui.h"
  50 #include "utils.h"
  51 #include "gui_thread.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace std;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Gtkmm2ext;
  59 using namespace Gtk;
  60 using namespace sigc;
  61
  62 GenericPluginUI::GenericPluginUI (boost::shared_ptr<PluginInsert> pi, bool scrollable)
  63         : PlugUIBase (pi),
  64           button_table (initial_button_rows, initial_button_cols),
  65           output_table (initial_output_rows, initial_output_cols),
  66           hAdjustment(0.0, 0.0, 0.0),
  67           vAdjustment(0.0, 0.0, 0.0),
  68           scroller_view(hAdjustment, vAdjustment),
  69           automation_menu (0),
  70           is_scrollable(scrollable)
  71 {
  72         set_name ("PluginEditor");
  73         set_border_width (10);
  74         set_homogeneous (false);
  75
  76         HBox* constraint_hbox = manage (new HBox);
  77         HBox* smaller_hbox = manage (new HBox);
  78         Label* combo_label = manage (new Label (_("<span size=\"large\">Presets</span>")));
  79         combo_label->set_use_markup (true);
  80
  81         smaller_hbox->pack_start (*combo_label, false, false, 10);
  82         smaller_hbox->pack_start (preset_combo, false, false);
  83         smaller_hbox->pack_start (save_button, false, false);
  84         smaller_hbox->pack_start (bypass_button, false, true);
  85
  86         constraint_hbox->set_spacing (5);
  87         constraint_hbox->set_homogeneous (false);
  88
  89         VBox* v1_box = manage (new VBox);
  90         VBox* v2_box = manage (new VBox);
  91
  92         v1_box->pack_start (*smaller_hbox, false, true);
  93         v2_box->pack_start (focus_button, false, true);
  94
  95         constraint_hbox->pack_end (*v2_box, false, false);
  96         constraint_hbox->pack_end (*v1_box, false, false);
  97
  98         pack_start (*constraint_hbox, false, false);
  99
 100         if ( is_scrollable ) {
 101                 scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 102                 scroller.set_name ("PluginEditor");
 103                 scroller_view.set_name("PluginEditor");
 104                 scroller_view.add (hpacker);
 105                 scroller.add (scroller_view);
 106
 107                 pack_start (scroller, true, true);
 108
 109         }
 110         else {
 111                 pack_start (hpacker, false, false);
 112         }
 113
 114         build ();
 115 }
 116
 117 GenericPluginUI::~GenericPluginUI ()
 118 {
 119         if (output_controls.size() > 0) {
 120                 screen_update_connection.disconnect();
 121         }
 122 }
 123
 124 void
 125 GenericPluginUI::build ()
 126
 127 {
 128         guint32 i = 0;
 129         guint32 x = 0;
 130         Frame* frame;
 131         Frame* bt_frame;
 132         VBox* box;
 133         int output_row, output_col;
 134         int button_row, button_col;
 135         int output_rows, output_cols;
 136         int button_rows, button_cols;
 137         guint32 n_ins=0, n_outs = 0;
 138
 139         prefheight = 30;
 140         hpacker.set_spacing (10);
 141
 142         output_rows = initial_output_rows;
 143         output_cols = initial_output_cols;
 144         button_rows = initial_button_rows;
 145         button_cols = initial_button_cols;
 146         output_row = 0;
 147         button_row = 0;
 148         output_col = 0;
 149         button_col = 0;
 150
 151         button_table.set_homogeneous (false);
 152         button_table.set_row_spacings (2);
 153         button_table.set_col_spacings (2);
 154         output_table.set_homogeneous (true);
 155         output_table.set_row_spacings (2);
 156         output_table.set_col_spacings (2);
 157         button_table.set_border_width (5);
 158         output_table.set_border_width (5);
 159
 160         hpacker.set_border_width (10);
 161
 162         bt_frame = manage (new Frame);
 163         bt_frame->set_name ("BaseFrame");
 164         bt_frame->add (button_table);
 165         hpacker.pack_start(*bt_frame, true, true);
 166
 167         box = manage (new VBox);
 168         box->set_border_width (5);
 169         box->set_spacing (1);
 170
 171         frame = manage (new Frame);
 172         frame->set_name ("BaseFrame");
 173         frame->set_label (_("Controls"));
 174         frame->add (*box);
 175         hpacker.pack_start(*frame, true, true);
 176
 177         /* find all ports. build control elements for all appropriate control ports */
 178
 179         for (i = 0; i < plugin->parameter_count(); ++i) {
 180
 181                 if (plugin->parameter_is_control (i)) {
 182
 183                         /* Don't show latency control ports */
 184
 185                         if (plugin->describe_parameter (i) == X_("latency")) {
 186                                 continue;
 187                         }
 188
 189                         ControlUI* cui;
 190
 191                         /* if we are scrollable, just use one long column */
 192
 193                         if (!is_scrollable) {
 194                                 if (x++ > 20){
 195                                         frame = manage (new Frame);
 196                                         frame->set_name ("BaseFrame");
 197                                         box = manage (new VBox);
 198
 199                                         box->set_border_width (5);
 200                                         box->set_spacing (1);
 201
 202                                         frame->add (*box);
 203                                         hpacker.pack_start(*frame,true,true);
 204
 205                                         x = 1;
 206                                 }
 207                         }
 208
 209                         if ((cui = build_control_ui (i, plugin->get_nth_control (i))) == 0) {
 210                                 error << string_compose(_("Plugin Editor: could not build control element for port %1"), i) << endmsg;
 211                                 continue;
 212                         }
 213
 214                         if (cui->control || cui->clickbox || cui->combo) {
 215
 216                                 box->pack_start (*cui, false, false);
 217
 218                         } else if (cui->button) {
 219
 220                                 if (button_row == button_rows) {
 221                                         button_row = 0;
 222                                         if (++button_col == button_cols) {
 223                                                 button_cols += 2;
 224                                                 button_table.resize (button_rows, button_cols);
 225                                         }
 226                                 }
 227
 228                                 button_table.attach (*cui, button_col, button_col + 1, button_row, button_row+1,
 229                                                      FILL|EXPAND, FILL);
 230                                 button_row++;
 231
 232                         } else if (cui->display) {
 233
 234                                 output_table.attach (*cui, output_col, output_col + 1, output_row, output_row+1,
 235                                                      FILL|EXPAND, FILL);
 236
 237                                 // TODO: The meters should be divided into multiple rows
 238
 239                                 if (++output_col == output_cols) {
 240                                         output_cols ++;
 241                                         output_table.resize (output_rows, output_cols);
 242                                 }
 243
 244                                 /* old code, which divides meters into
 245                                  * columns first, rows later. New code divides into one row
 246
 247                                 if (output_row == output_rows) {
 248                                         output_row = 0;
 249                                         if (++output_col == output_cols) {
 250                                                 output_cols += 2;
 251                                                 output_table.resize (output_rows, output_cols);
 252                                         }
 253                                 }
 254
 255                                 output_table.attach (*cui, output_col, output_col + 1, output_row, output_row+1,
 256                                                      FILL|EXPAND, FILL);
 257
 258                                 output_row++;
 259                                 */
 260                         }
 261
 262                         /* HACK: ideally the preferred height would be queried from
 263                            the complete hpacker, but I can't seem to get that
 264                            information in time, so this is an estimation
 265                         */
 266
 267                         prefheight += 30;
 268
 269                 }
 270         }
 271
 272         n_ins = plugin->get_info()->n_inputs;
 273         n_outs = plugin->get_info()->n_outputs;
 274
 275         if (box->children().empty()) {
 276                 hpacker.remove (*frame);
 277         }
 278
 279         if (button_table.children().empty()) {
 280                 hpacker.remove (*bt_frame);
 281         }
 282
 283         if (!output_table.children().empty()) {
 284                 frame = manage (new Frame);
 285                 frame->set_name ("BaseFrame");
 286                 frame->add (output_table);
 287                 hpacker.pack_end (*frame, true, true);
 288         }
 289
 290         output_update ();
 291
 292         output_table.show_all ();
 293         button_table.show_all ();
 294 }
 295
 296 GenericPluginUI::ControlUI::ControlUI ()
 297         : automate_button (X_("")) // force creation of a label
 298 {
 299         automate_button.set_name ("PluginAutomateButton");
 300         ARDOUR_UI::instance()->tooltips().set_tip (automate_button, _("Automation control"));
 301
 302         /* XXX translators: use a string here that will be at least as long
 303            as the longest automation label (see ::automation_state_changed()
 304            below). be sure to include a descender.
 305         */
 306
 307         set_size_request_to_display_given_text (automate_button, _("Mgnual"), 15, 10);
 308
 309         ignore_change = 0;
 310         display = 0;
 311         button = 0;
 312         control = 0;
 313         clickbox = 0;
 314         adjustment = 0;
 315         meterinfo = 0;
 316 }
 317
 318 GenericPluginUI::ControlUI::~ControlUI()
 319 {
 320         if (adjustment) {
 321                 delete adjustment;
 322         }
 323
 324         if (meterinfo) {
 325                 delete meterinfo->meter;
 326                 delete meterinfo;
 327         }
 328 }
 329
 330 void
 331 GenericPluginUI::automation_state_changed (ControlUI* cui)
 332 {
 333         /* update button label */
 334
 335         switch (insert->get_port_automation_state (cui->port_index) & (Off|Play|Touch|Write)) {
 336         case Off:
 337                 cui->automate_button.set_label (_("Manual"));
 338                 break;
 339         case Play:
 340                 cui->automate_button.set_label (_("Play"));
 341                 break;
 342         case Write:
 343                 cui->automate_button.set_label (_("Write"));
 344                 break;
 345         case Touch:
 346                 cui->automate_button.set_label (_("Touch"));
 347                 break;
 348         default:
 349                 cui->automate_button.set_label (_("???"));
 350                 break;
 351         }
 352 }
 353
 354
 355 static void integer_printer (char buf[32], Adjustment &adj, void *arg)
 356 {
 357         snprintf (buf, 32, "%.0f", adj.get_value());
 358 }
 359
 360 void
 361 GenericPluginUI::print_parameter (char *buf, uint32_t len, uint32_t param)
 362 {
 363         plugin->print_parameter (param, buf, len);
 364 }
 365
 366 GenericPluginUI::ControlUI*
 367 GenericPluginUI::build_control_ui (guint32 port_index, PBD::Controllable* mcontrol)
 368
 369 {
 370         ControlUI* control_ui;
 371         Plugin::ParameterDescriptor desc;
 372
 373         plugin->get_parameter_descriptor (port_index, desc);
 374
 375         control_ui = manage (new ControlUI ());
 376         control_ui->adjustment = 0;
 377         control_ui->combo = 0;
 378         control_ui->combo_map = 0;
 379         control_ui->port_index = port_index;
 380         control_ui->update_pending = false;
 381         control_ui->label.set_text (desc.label);
 382         control_ui->label.set_alignment (0.0, 0.5);
 383         control_ui->label.set_name ("PluginParameterLabel");
 384
 385         control_ui->set_spacing (5);
 386
 387         Gtk::Requisition req (control_ui->automate_button.size_request());
 388
 389         if (plugin->parameter_is_input (port_index)) {
 390
 391                 boost::shared_ptr<LadspaPlugin> lp;
 392 #ifdef HAVE_LV2
 393                 boost::shared_ptr<LV2Plugin> lv2p;
 394 #endif
 395                 if ((lp = boost::dynamic_pointer_cast<LadspaPlugin>(plugin)) != 0) {
 396
 397                         // all LADPSA plugins have a numeric unique ID
 398                         uint32_t id = atol (lp->unique_id().c_str());
 399
 400                         lrdf_defaults* defaults = lrdf_get_scale_values(id, port_index);
 401
 402                         if (defaults && defaults->count > 0)    {
 403
 404                                 control_ui->combo = new Gtk::ComboBoxText;
 405                                 //control_ui->combo->set_value_in_list(true, false);
 406                                 set_popdown_strings (*control_ui->combo, setup_scale_values(port_index, control_ui));
 407                                 control_ui->combo->signal_changed().connect (bind (mem_fun(*this, &GenericPluginUI::control_combo_changed), control_ui));
 408                                 plugin->ParameterChanged.connect (bind (mem_fun (*this, &GenericPluginUI::parameter_changed), control_ui));
 409                                 control_ui->pack_start(control_ui->label, true, true);
 410                                 control_ui->pack_start(*control_ui->combo, false, true);
 411
 412                                 update_control_display(control_ui);
 413
 414                                 lrdf_free_setting_values(defaults);
 415                                 return control_ui;
 416                         }
 417
 418 #ifdef HAVE_LV2
 419                 } else if ((lv2p = boost::dynamic_pointer_cast<LV2Plugin>(plugin)) != 0) {
 420
 421                         SLV2Port port = lv2p->slv2_port(port_index);
 422                         SLV2ScalePoints points = slv2_port_get_scale_points(lv2p->slv2_plugin(), port);
 423
 424                         if (points) {
 425                                 control_ui->combo = new Gtk::ComboBoxText;
 426                                 //control_ui->combo->set_value_in_list(true, false);
 427                                 set_popdown_strings (*control_ui->combo, setup_scale_values(port_index, control_ui));
 428                                 control_ui->combo->signal_changed().connect (bind (mem_fun(*this, &GenericPluginUI::control_combo_changed), control_ui));
 429                                 plugin->ParameterChanged.connect (bind (mem_fun (*this, &GenericPluginUI::parameter_changed), control_ui));
 430                                 control_ui->pack_start(control_ui->label, true, true);
 431                                 control_ui->pack_start(*control_ui->combo, false, true);
 432
 433                                 update_control_display(control_ui);
 434
 435                                 slv2_scale_points_free(points);
 436                                 return control_ui;
 437                         }
 438 #endif
 439                 }
 440
 441                 if (desc.toggled) {
 442
 443                         /* Build a button */
 444
 445                         control_ui->button = manage (new ToggleButton ());
 446                         control_ui->button->set_name ("PluginEditorButton");
 447                         control_ui->button->set_size_request (20, 20);
 448
 449                         control_ui->pack_start (control_ui->label, true, true);
 450                         control_ui->pack_start (*control_ui->button, false, true);
 451                         control_ui->pack_start (control_ui->automate_button, false, false);
 452
 453                         if(plugin->get_parameter (port_index) > 0.5){
 454                                 control_ui->button->set_active(true);
 455                         }
 456
 457                         control_ui->button->signal_clicked().connect (bind (mem_fun(*this, &GenericPluginUI::control_port_toggled), control_ui));
 458
 459                         plugin->ParameterChanged.connect (bind (mem_fun(*this, &GenericPluginUI::toggle_parameter_changed), control_ui));
 460
 461                         control_ui->automate_button.signal_clicked().connect (bind (mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
 462                         automation_state_changed (control_ui);
 463                         insert->automation_list (port_index).automation_state_changed.connect
 464                                 (bind (mem_fun(*this, &GenericPluginUI::automation_state_changed), control_ui));
 465
 466                         return control_ui;
 467                 }
 468
 469                 control_ui->adjustment = new Adjustment (0, 0, 0, 0, 0);
 470
 471                 /* XXX this code is not right yet, because it doesn't handle
 472                    the absence of bounds in any sensible fashion.
 473                 */
 474
 475                 control_ui->adjustment->set_lower (desc.lower);
 476                 control_ui->adjustment->set_upper (desc.upper);
 477
 478                 control_ui->logarithmic = desc.logarithmic;
 479                 if (control_ui->logarithmic) {
 480                         if (control_ui->adjustment->get_lower() == 0.0) {
 481                                 control_ui->adjustment->set_lower (control_ui->adjustment->get_upper()/10000);
 482                         }
 483                         control_ui->adjustment->set_upper (log(control_ui->adjustment->get_upper()));
 484                         control_ui->adjustment->set_lower (log(control_ui->adjustment->get_lower()));
 485                 }
 486
 487                 control_ui->adjustment->set_step_increment (desc.step);
 488                 control_ui->adjustment->set_page_increment (desc.largestep);
 489
 490                 if (desc.integer_step) {
 491                         control_ui->clickbox = new ClickBox (control_ui->adjustment, "PluginUIClickBox");
 492                         Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->clickbox, "g9999999", 2, 2);
 493                         control_ui->clickbox->set_print_func (integer_printer, 0);
 494                 } else {
 495                         sigc::slot<void,char*,uint32_t> pslot = sigc::bind (mem_fun(*this, &GenericPluginUI::print_parameter), (uint32_t) port_index);
 496
 497                         control_ui->control = new BarController (*control_ui->adjustment, *mcontrol, pslot);
 498                         control_ui->control->set_size_request (200, req.height);
 499                         control_ui->control->set_name (X_("PluginSlider"));
 500                         control_ui->control->set_style (BarController::LeftToRight);
 501                         control_ui->control->set_use_parent (true);
 502                         control_ui->control->set_logarithmic (control_ui->logarithmic);
 503
 504                         control_ui->control->StartGesture.connect (bind (mem_fun(*this, &GenericPluginUI::start_touch), control_ui));
 505                         control_ui->control->StopGesture.connect (bind (mem_fun(*this, &GenericPluginUI::stop_touch), control_ui));
 506
 507                 }
 508
 509                 if (control_ui->logarithmic) {
 510                         control_ui->adjustment->set_value(log(plugin->get_parameter(port_index)));
 511                 } else{
 512                         control_ui->adjustment->set_value(plugin->get_parameter(port_index));
 513                 }
 514
 515                 /* XXX memory leak: SliderController not destroyed by ControlUI
 516                    destructor, and manage() reports object hierarchy
 517                    ambiguity.
 518                 */
 519
 520                 control_ui->pack_start (control_ui->label, true, true);
 521                 if (desc.integer_step) {
 522                         control_ui->pack_start (*control_ui->clickbox, false, false);
 523                 } else {
 524                         control_ui->pack_start (*control_ui->control, false, false);
 525                 }
 526
 527                 control_ui->pack_start (control_ui->automate_button, false, false);
 528                 control_ui->adjustment->signal_value_changed().connect (bind (mem_fun(*this, &GenericPluginUI::control_adjustment_changed), control_ui));
 529                 control_ui->automate_button.signal_clicked().connect (bind (mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
 530
 531                 automation_state_changed (control_ui);
 532
 533                 plugin->ParameterChanged.connect (bind (mem_fun(*this, &GenericPluginUI::parameter_changed), control_ui));
 534                 insert->automation_list (port_index).automation_state_changed.connect
 535                         (bind (mem_fun(*this, &GenericPluginUI::automation_state_changed), control_ui));
 536
 537         } else if (plugin->parameter_is_output (port_index)) {
 538
 539                 control_ui->display = manage (new EventBox);
 540                 control_ui->display->set_name ("ParameterValueDisplay");
 541
 542                 control_ui->display_label = manage (new Label);
 543
 544                 control_ui->display_label->set_name ("ParameterValueDisplay");
 545
 546                 control_ui->display->add (*control_ui->display_label);
 547                 Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->display, "-99,99", 2, 2);
 548
 549                 control_ui->display->show_all ();
 550
 551                 /* set up a meter */
 552                 /* TODO: only make a meter if the port is Hinted for it */
 553
 554                 MeterInfo * info = new MeterInfo(port_index);
 555                 control_ui->meterinfo = info;
 556
 557                 info->meter = new FastMeter (5, 5, FastMeter::Vertical);
 558
 559                 info->min_unbound = desc.min_unbound;
 560                 info->max_unbound = desc.max_unbound;
 561
 562                 info->min = desc.lower;
 563                 info->max = desc.upper;
 564
 565                 control_ui->vbox = manage (new VBox);
 566                 control_ui->hbox = manage (new HBox);
 567
 568                 control_ui->label.set_angle(90);
 569                 control_ui->hbox->pack_start (control_ui->label, false, false);
 570                 control_ui->hbox->pack_start (*info->meter, false, false);
 571
 572                 control_ui->vbox->pack_start (*control_ui->hbox, false, false);
 573
 574                 control_ui->vbox->pack_start (*control_ui->display, false, false);
 575
 576                 control_ui->pack_start (*control_ui->vbox);
 577
 578                 control_ui->meterinfo->meter->show_all();
 579                 control_ui->meterinfo->packed = true;
 580
 581                 output_controls.push_back (control_ui);
 582
 583                 plugin->ParameterChanged.connect (bind (mem_fun(*this, &GenericPluginUI::parameter_changed), control_ui));
 584         }
 585
 586         return control_ui;
 587 }
 588
 589 void
 590 GenericPluginUI::start_touch (GenericPluginUI::ControlUI* cui)
 591 {
 592         insert->automation_list (cui->port_index).start_touch ();
 593 }
 594
 595 void
 596 GenericPluginUI::stop_touch (GenericPluginUI::ControlUI* cui)
 597 {
 598         insert->automation_list (cui->port_index).stop_touch ();
 599 }
 600
 601 void
 602 GenericPluginUI::astate_clicked (ControlUI* cui, uint32_t port)
 603 {
 604         using namespace Menu_Helpers;
 605
 606         if (automation_menu == 0) {
 607                 automation_menu = manage (new Menu);
 608                 automation_menu->set_name ("ArdourContextMenu");
 609         }
 610
 611         MenuList& items (automation_menu->items());
 612
 613         items.clear ();
 614         items.push_back (MenuElem (_("Manual"),
 615                                    bind (mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Off, cui)));
 616         items.push_back (MenuElem (_("Play"),
 617                                    bind (mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Play, cui)));
 618         items.push_back (MenuElem (_("Write"),
 619                                    bind (mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Write, cui)));
 620         items.push_back (MenuElem (_("Touch"),
 621                                    bind (mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Touch, cui)));
 622
 623         automation_menu->popup (1, gtk_get_current_event_time());
 624 }
 625
 626 void
 627 GenericPluginUI::set_automation_state (AutoState state, ControlUI* cui)
 628 {
 629         insert->set_port_automation_state (cui->port_index, state);
 630 }
 631
 632 void
 633 GenericPluginUI::control_adjustment_changed (ControlUI* cui)
 634 {
 635         if (cui->ignore_change) {
 636                 return;
 637         }
 638
 639         double value = cui->adjustment->get_value();
 640
 641         if (cui->logarithmic) {
 642                 value = exp(value);
 643         }
 644
 645         insert->set_parameter (cui->port_index, (float) value);
 646 }
 647
 648 void
 649 GenericPluginUI::toggle_parameter_changed (uint32_t abs_port_id, float val, ControlUI* cui)
 650 {
 651         if (!cui->ignore_change && cui->port_index == abs_port_id) {
 652                 if (val > 0.5) {
 653                         cui->button->set_active (true);
 654                 } else {
 655                         cui->button->set_active (false);
 656                 }
 657         }
 658 }
 659
 660 void
 661 GenericPluginUI::parameter_changed (uint32_t abs_port_id, float val, ControlUI* cui)
 662 {
 663         if (cui->port_index == abs_port_id) {
 664                 if (!cui->update_pending) {
 665                         cui->update_pending = true;
 666                         Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun(*this, &GenericPluginUI::update_control_display), cui));
 667                 }
 668         }
 669 }
 670
 671 void
 672 GenericPluginUI::update_control_display (ControlUI* cui)
 673 {
 674         /* XXX how do we handle logarithmic stuff here ? */
 675
 676         cui->update_pending = false;
 677
 678         float val = plugin->get_parameter (cui->port_index);
 679
 680         cui->ignore_change++;
 681         if (cui->combo) {
 682                 std::map<string,float>::iterator it;
 683                 for (it = cui->combo_map->begin(); it != cui->combo_map->end(); ++it) {
 684                         if (it->second == val) {
 685                                 cui->combo->set_active_text(it->first);
 686                                 break;
 687                         }
 688                 }
 689         } else {
 690                 if (cui->logarithmic) {
 691                         val = log(val);
 692                 }
 693                 if (val != cui->adjustment->get_value()) {
 694                         cui->adjustment->set_value (val);
 695                 }
 696         }
 697         cui->ignore_change--;
 698 }
 699
 700 void
 701 GenericPluginUI::control_port_toggled (ControlUI* cui)
 702 {
 703         cui->ignore_change++;
 704         insert->set_parameter (cui->port_index, cui->button->get_active());
 705         cui->ignore_change--;
 706 }
 707
 708 void
 709 GenericPluginUI::control_combo_changed (ControlUI* cui)
 710 {
 711         if (!cui->ignore_change) {
 712                 string value = cui->combo->get_active_text();
 713                 std::map<string,float> mapping = *cui->combo_map;
 714                 insert->set_parameter (cui->port_index, mapping[value]);
 715         }
 716
 717 }
 718
 719 bool
 720 GenericPluginUI::start_updating (GdkEventAny* ignored)
 721 {
 722         if (output_controls.size() > 0 ) {
 723                 screen_update_connection.disconnect();
 724                 screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
 725                         (mem_fun(*this, &GenericPluginUI::output_update));
 726         }
 727         return false;
 728 }
 729
 730 bool
 731 GenericPluginUI::stop_updating (GdkEventAny* ignored)
 732 {
 733         if (output_controls.size() > 0 ) {
 734                 screen_update_connection.disconnect();
 735         }
 736         return false;
 737 }
 738
 739 void
 740 GenericPluginUI::output_update ()
 741 {
 742         for (vector<ControlUI*>::iterator i = output_controls.begin(); i != output_controls.end(); ++i) {
 743                 float val = plugin->get_parameter ((*i)->port_index);
 744                 char buf[32];
 745                 snprintf (buf, sizeof(buf), "%.2f", val);
 746                 (*i)->display_label->set_text (buf);
 747
 748                 /* autoscaling for the meter */
 749                 if ((*i)->meterinfo && (*i)->meterinfo->packed) {
 750
 751                         if (val < (*i)->meterinfo->min) {
 752                                 if ((*i)->meterinfo->min_unbound)
 753                                         (*i)->meterinfo->min = val;
 754                                 else
 755                                         val = (*i)->meterinfo->min;
 756                         }
 757
 758                         if (val > (*i)->meterinfo->max) {
 759                                 if ((*i)->meterinfo->max_unbound)
 760                                         (*i)->meterinfo->max = val;
 761                                 else
 762                                         val = (*i)->meterinfo->max;
 763                         }
 764
 765                         if ((*i)->meterinfo->max > (*i)->meterinfo->min ) {
 766                                 float lval = (val - (*i)->meterinfo->min) / ((*i)->meterinfo->max - (*i)->meterinfo->min) ;
 767                                 (*i)->meterinfo->meter->set (lval );
 768                         }
 769                 }
 770         }
 771 }
 772
 773 vector<string>
 774 GenericPluginUI::setup_scale_values(guint32 port_index, ControlUI* cui)
 775 {
 776         vector<string> enums;
 777         boost::shared_ptr<LadspaPlugin> lp;
 778 #ifdef HAVE_LV2
 779         boost::shared_ptr<LV2Plugin> lv2p;
 780 #endif
 781
 782         if ((lp = boost::dynamic_pointer_cast<LadspaPlugin>(plugin)) != 0) {
 783                 // all LADPSA plugins have a numeric unique ID
 784                 uint32_t id = atol (lp->unique_id().c_str());
 785
 786                 cui->combo_map = new std::map<string, float>;
 787                 lrdf_defaults* defaults = lrdf_get_scale_values(id, port_index);
 788                 if (defaults)   {
 789                         for (uint32_t i = 0; i < defaults->count; ++i) {
 790                                 enums.push_back(defaults->items[i].label);
 791                                 pair<string, float> newpair;
 792                                 newpair.first = defaults->items[i].label;
 793                                 newpair.second = defaults->items[i].value;
 794                                 cui->combo_map->insert(newpair);
 795                         }
 796
 797                         lrdf_free_setting_values(defaults);
 798                 }
 799
 800 #ifdef HAVE_LV2
 801         } else if ((lv2p = boost::dynamic_pointer_cast<LV2Plugin>(plugin)) != 0) {
 802
 803                 SLV2Port port = lv2p->slv2_port(port_index);
 804                 SLV2ScalePoints points = slv2_port_get_scale_points(lv2p->slv2_plugin(), port);
 805                 cui->combo_map = new std::map<string, float>;
 806
 807                 for (unsigned i=0; i < slv2_scale_points_size(points); ++i) {
 808                         SLV2ScalePoint p = slv2_scale_points_get_at(points, i);
 809                         SLV2Value label = slv2_scale_point_get_label(p);
 810                         SLV2Value value = slv2_scale_point_get_value(p);
 811                         if (label && (slv2_value_is_float(value) || slv2_value_is_int(value))) {
 812                                 enums.push_back(slv2_value_as_string(label));
 813                                 pair<string, float> newpair;
 814                                 newpair.first = slv2_value_as_string(label);
 815                                 newpair.second = slv2_value_as_float(value);
 816                                 cui->combo_map->insert(newpair);
 817                         }
 818                 }
 819
 820                 slv2_scale_points_free(points);
 821 #endif
 822         }
 823
 824
 825         return enums;
 826 }