gtk2_ardour/port_group.cc

   1 /*
   2     Copyright (C) 2002-2009 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 <cstring>
  21 #include <boost/shared_ptr.hpp>
  22 #include <boost/algorithm/string.hpp>
  23
  24 #include "midi++/mmc.h"
  25
  26 #include "ardour/audioengine.h"
  27 #include "ardour/auditioner.h"
  28 #include "ardour/bundle.h"
  29 #include "ardour/control_protocol_manager.h"
  30 #include "ardour/io_processor.h"
  31 #include "ardour/midi_port.h"
  32 #include "ardour/midiport_manager.h"
  33 #include "ardour/port.h"
  34 #include "ardour/profile.h"
  35 #include "ardour/session.h"
  36 #include "ardour/user_bundle.h"
  37
  38 #include "control_protocol/control_protocol.h"
  39
  40 #include "gui_thread.h"
  41 #include "port_group.h"
  42 #include "port_matrix.h"
  43 #include "time_axis_view.h"
  44 #include "public_editor.h"
  45
  46 #include "i18n.h"
  47
  48 using namespace std;
  49 using namespace Gtk;
  50 using namespace ARDOUR;
  51
  52 /** PortGroup constructor.
  53  * @param n Name.
  54  */
  55 PortGroup::PortGroup (std::string const & n)
  56         : name (n)
  57 {
  58
  59 }
  60
  61 PortGroup::~PortGroup()
  62 {
  63         for (BundleList::iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
  64                 delete *i;
  65         }
  66         _bundles.clear ();
  67 }
  68
  69 /** Add a bundle to a group.
  70  *  @param b Bundle.
  71  *  @param allow_dups true to allow the group to contain more than one bundle with the same port, otherwise false.
  72  */
  73 void
  74 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, bool allow_dups)
  75 {
  76         add_bundle_internal (b, boost::shared_ptr<IO> (), false, Gdk::Color (), allow_dups);
  77 }
  78
  79 /** Add a bundle to a group.
  80  *  @param b Bundle.
  81  *  @param io IO whose ports are in the bundle.
  82  */
  83 void
  84 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io)
  85 {
  86         add_bundle_internal (b, io, false, Gdk::Color (), false);
  87 }
  88
  89 /** Add a bundle to a group.
  90  *  @param b Bundle.
  91  *  @param c Colour to represent the bundle with.
  92  */
  93 void
  94 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io, Gdk::Color c)
  95 {
  96         add_bundle_internal (b, io, true, c, false);
  97 }
  98
  99 PortGroup::BundleRecord::BundleRecord (boost::shared_ptr<ARDOUR::Bundle> b, boost::shared_ptr<ARDOUR::IO> iop, Gdk::Color c, bool has_c)
 100         : bundle (b)
 101         , io (iop)
 102         , colour (c)
 103         , has_colour (has_c)
 104 {
 105 }
 106
 107 void
 108 PortGroup::add_bundle_internal (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io, bool has_colour, Gdk::Color colour, bool allow_dups)
 109 {
 110         assert (b.get());
 111
 112         if (!allow_dups) {
 113
 114                 /* don't add this bundle if we already have one with the same ports */
 115
 116                 BundleList::iterator i = _bundles.begin ();
 117                 while (i != _bundles.end() && b->has_same_ports ((*i)->bundle) == false) {
 118                         ++i;
 119                 }
 120
 121                 if (i != _bundles.end ()) {
 122                         return;
 123                 }
 124         }
 125
 126         BundleRecord* br = new BundleRecord (b, io, colour, has_colour);
 127         b->Changed.connect (br->changed_connection, invalidator (*this), boost::bind (&PortGroup::bundle_changed, this, _1), gui_context());
 128         _bundles.push_back (br);
 129
 130         Changed ();
 131 }
 132
 133 void
 134 PortGroup::remove_bundle (boost::shared_ptr<Bundle> b)
 135 {
 136         assert (b.get());
 137
 138         BundleList::iterator i = _bundles.begin ();
 139         while (i != _bundles.end() && (*i)->bundle != b) {
 140                 ++i;
 141         }
 142
 143         if (i == _bundles.end()) {
 144                 return;
 145         }
 146
 147         delete *i;
 148         _bundles.erase (i);
 149
 150         Changed ();
 151 }
 152
 153 void
 154 PortGroup::bundle_changed (Bundle::Change c)
 155 {
 156         BundleChanged (c);
 157 }
 158
 159
 160 void
 161 PortGroup::clear ()
 162 {
 163         for (BundleList::iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
 164                 delete *i;
 165         }
 166
 167         _bundles.clear ();
 168         Changed ();
 169 }
 170
 171 bool
 172 PortGroup::has_port (std::string const& p) const
 173 {
 174         for (BundleList::const_iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
 175                 if ((*i)->bundle->offers_port_alone (p)) {
 176                         return true;
 177                 }
 178         }
 179
 180         return false;
 181 }
 182
 183 boost::shared_ptr<Bundle>
 184 PortGroup::only_bundle ()
 185 {
 186         assert (_bundles.size() == 1);
 187         return _bundles.front()->bundle;
 188 }
 189
 190
 191 ChanCount
 192 PortGroup::total_channels () const
 193 {
 194         ChanCount n;
 195         for (BundleList::const_iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
 196                 n += (*i)->bundle->nchannels ();
 197         }
 198
 199         return n;
 200 }
 201
 202 boost::shared_ptr<IO>
 203 PortGroup::io_from_bundle (boost::shared_ptr<ARDOUR::Bundle> b) const
 204 {
 205         BundleList::const_iterator i = _bundles.begin ();
 206         while (i != _bundles.end() && (*i)->bundle != b) {
 207                 ++i;
 208         }
 209
 210         if (i == _bundles.end()) {
 211                 return boost::shared_ptr<IO> ();
 212         }
 213
 214         boost::shared_ptr<IO> io ((*i)->io.lock ());
 215         return io;
 216 }
 217
 218 /** Remove bundles whose channels are already represented by other, larger bundles */
 219 void
 220 PortGroup::remove_duplicates ()
 221 {
 222         BundleList::iterator i = _bundles.begin();
 223         while (i != _bundles.end()) {
 224
 225                 BundleList::iterator tmp = i;
 226                 ++tmp;
 227
 228                 bool remove = false;
 229
 230                 for (BundleList::iterator j = _bundles.begin(); j != _bundles.end(); ++j) {
 231
 232                         if ((*j)->bundle->nchannels() > (*i)->bundle->nchannels()) {
 233                                 /* this bundle is larger */
 234
 235                                 uint32_t k = 0;
 236                                 while (k < (*i)->bundle->nchannels().n_total()) {
 237                                         /* see if this channel on *i has an equivalent on *j */
 238                                         uint32_t l = 0;
 239                                         while (l < (*j)->bundle->nchannels().n_total() && (*i)->bundle->channel_ports (k) != (*j)->bundle->channel_ports (l)) {
 240                                                 ++l;
 241                                         }
 242
 243                                         if (l == (*j)->bundle->nchannels().n_total()) {
 244                                                 /* it does not */
 245                                                 break;
 246                                         }
 247
 248                                         ++k;
 249                                 }
 250
 251                                 if (k == (*i)->bundle->nchannels().n_total()) {
 252                                         /* all channels on *i are represented by the larger bundle *j, so remove *i */
 253                                         remove = true;
 254                                         break;
 255                                 }
 256                         }
 257                 }
 258
 259                 if (remove) {
 260                         _bundles.erase (i);
 261                 }
 262
 263                 i = tmp;
 264         }
 265 }
 266
 267
 268 /** PortGroupList constructor.
 269  */
 270 PortGroupList::PortGroupList ()
 271         : _signals_suspended (false), _pending_change (false), _pending_bundle_change ((Bundle::Change) 0)
 272 {
 273
 274 }
 275
 276 PortGroupList::~PortGroupList()
 277 {
 278         /* XXX need to clean up bundles, but ownership shared with PortGroups */
 279 }
 280
 281 void
 282 PortGroupList::maybe_add_processor_to_list (
 283         boost::weak_ptr<Processor> wp, list<boost::shared_ptr<IO> >* route_ios, bool inputs, set<boost::shared_ptr<IO> >& used_io
 284         )
 285 {
 286         boost::shared_ptr<Processor> p (wp.lock());
 287
 288         if (!p) {
 289                 return;
 290         }
 291
 292         boost::shared_ptr<IOProcessor> iop = boost::dynamic_pointer_cast<IOProcessor> (p);
 293
 294         if (iop) {
 295
 296                 boost::shared_ptr<IO> io = inputs ? iop->input() : iop->output();
 297
 298                 if (io && used_io.find (io) == used_io.end()) {
 299                         route_ios->push_back (io);
 300                         used_io.insert (io);
 301                 }
 302         }
 303 }
 304
 305 struct RouteIOs {
 306         RouteIOs (boost::shared_ptr<Route> r, boost::shared_ptr<IO> i) {
 307                 route = r;
 308                 ios.push_back (i);
 309         }
 310
 311         boost::shared_ptr<Route> route;
 312         /* it's ok to use a shared_ptr here as RouteIOs structs are only used during ::gather () */
 313         std::list<boost::shared_ptr<IO> > ios;
 314 };
 315
 316 class RouteIOsComparator {
 317 public:
 318         bool operator() (RouteIOs const & a, RouteIOs const & b) {
 319                 return a.route->order_key () < b.route->order_key ();
 320         }
 321 };
 322
 323 /** Gather ports from around the system and put them in this PortGroupList.
 324  *  @param type Type of ports to collect, or NIL for all types.
 325  *  @param use_session_bundles true to use the session's non-user bundles.  Doing this will mean that
 326  *  hardware ports will be gathered into stereo pairs, as the session sets up bundles for these pairs.
 327  *  Not using the session bundles will mean that all hardware IO will be presented separately.
 328  */
 329 void
 330 PortGroupList::gather (ARDOUR::Session* session, ARDOUR::DataType type, bool inputs, bool allow_dups, bool use_session_bundles)
 331 {
 332         clear ();
 333
 334         if (session == 0) {
 335                 return;
 336         }
 337
 338         boost::shared_ptr<PortGroup> bus (new PortGroup (string_compose (_("%1 Busses"), PROGRAM_NAME)));
 339         boost::shared_ptr<PortGroup> track (new PortGroup (string_compose (_("%1 Tracks"), PROGRAM_NAME)));
 340         boost::shared_ptr<PortGroup> system (new PortGroup (_("Hardware")));
 341         boost::shared_ptr<PortGroup> program (new PortGroup (string_compose (_("%1 Misc"), PROGRAM_NAME)));
 342         boost::shared_ptr<PortGroup> other (new PortGroup (_("Other")));
 343
 344         /* Find the IOs which have bundles for routes and their processors.  We store
 345            these IOs in a RouteIOs class so that we can then sort the results by route
 346            order key.
 347         */
 348
 349         boost::shared_ptr<RouteList> routes = session->get_routes ();
 350         list<RouteIOs> route_ios;
 351
 352         for (RouteList::const_iterator i = routes->begin(); i != routes->end(); ++i) {
 353
 354                 /* we never show the monitor bus inputs */
 355
 356                 if (inputs && (*i)->is_monitor()) {
 357                         continue;
 358                 }
 359
 360                 /* keep track of IOs that we have taken bundles from,
 361                    so that we can avoid taking the same IO from both
 362                    Route::output() and the main_outs Delivery
 363                 */
 364
 365                 set<boost::shared_ptr<IO> > used_io;
 366                 boost::shared_ptr<IO> io = inputs ? (*i)->input() : (*i)->output();
 367                 used_io.insert (io);
 368
 369                 RouteIOs rb (*i, io);
 370                 (*i)->foreach_processor (boost::bind (&PortGroupList::maybe_add_processor_to_list, this, _1, &rb.ios, inputs, used_io));
 371
 372                 route_ios.push_back (rb);
 373         }
 374
 375         /* Sort RouteIOs by the routes' editor order keys */
 376         route_ios.sort (RouteIOsComparator ());
 377
 378         /* Now put the bundles that belong to these sorted RouteIOs into the PortGroup.
 379            Note that if the RouteIO's bundles are multi-type, we may make new Bundles
 380            with only the ports of one type.
 381         */
 382
 383         for (list<RouteIOs>::iterator i = route_ios.begin(); i != route_ios.end(); ++i) {
 384                 TimeAxisView* tv = PublicEditor::instance().axis_view_from_route (i->route);
 385
 386                 /* Work out which group to put these IOs' bundles in */
 387                 boost::shared_ptr<PortGroup> g;
 388                 if (boost::dynamic_pointer_cast<Track> (i->route)) {
 389                         g = track;
 390                 } else {
 391                         g = bus;
 392                 }
 393
 394                 for (list<boost::shared_ptr<IO> >::iterator j = i->ios.begin(); j != i->ios.end(); ++j) {
 395                         if (tv) {
 396                                 g->add_bundle ((*j)->bundle(), *j, tv->color ());
 397                         } else {
 398                                 g->add_bundle ((*j)->bundle(), *j);
 399                         }
 400                 }
 401         }
 402
 403         /* Bundles owned by the session; add user bundles first, then normal ones, so
 404            that UserBundles that offer the same ports as a normal bundle get priority
 405         */
 406
 407         boost::shared_ptr<BundleList> b = session->bundles ();
 408
 409         for (BundleList::iterator i = b->begin(); i != b->end(); ++i) {
 410                 if (boost::dynamic_pointer_cast<UserBundle> (*i) && (*i)->ports_are_inputs() == inputs) {
 411                         system->add_bundle (*i, allow_dups);
 412                 }
 413         }
 414
 415         /* Only look for non-user bundles if instructed to do so */
 416         if (use_session_bundles) {
 417                 for (BundleList::iterator i = b->begin(); i != b->end(); ++i) {
 418                         if (boost::dynamic_pointer_cast<UserBundle> (*i) == 0 && (*i)->ports_are_inputs() == inputs) {
 419                                 system->add_bundle (*i, allow_dups);
 420                         }
 421                 }
 422         }
 423
 424         /* miscellany */
 425
 426         if (type == DataType::AUDIO || type == DataType::NIL) {
 427                 if (!inputs) {
 428                         program->add_bundle (session->the_auditioner()->output()->bundle());
 429                         program->add_bundle (session->click_io()->bundle());
 430                         /* Note: the LTC ports do not have the usual ":audio_out 1" postfix, so
 431                          *  program->add_bundle (session->ltc_output_io()->bundle());
 432                          *  won't work
 433                          */
 434                         boost::shared_ptr<Bundle> ltc (new Bundle (_("LTC Out"), inputs));
 435                         ltc->add_channel (_("LTC Out"), DataType::AUDIO, session->engine().make_port_name_non_relative (session->ltc_output_port()->name()));
 436                         program->add_bundle (ltc);
 437                 } else {
 438                         boost::shared_ptr<Bundle> ltc (new Bundle (_("LTC In"), inputs));
 439                         ltc->add_channel (_("LTC In"), DataType::AUDIO, session->engine().make_port_name_non_relative (session->ltc_input_port()->name()));
 440                         program->add_bundle (ltc);
 441                 }
 442         }
 443
 444         /* our control surfaces */
 445
 446         /* XXX assume for now that all control protocols with ports use
 447          * MIDI. If anyone created a control protocol that used audio ports,
 448          * this will break.
 449          */
 450
 451         if ((type == DataType::MIDI || type == DataType::NIL)) {
 452                 ControlProtocolManager& m = ControlProtocolManager::instance ();
 453                 for (list<ControlProtocolInfo*>::iterator i = m.control_protocol_info.begin(); i != m.control_protocol_info.end(); ++i) {
 454                         if ((*i)->protocol) {
 455                                 list<boost::shared_ptr<Bundle> > b = (*i)->protocol->bundles ();
 456                                 for (list<boost::shared_ptr<Bundle> >::iterator j = b.begin(); j != b.end(); ++j) {
 457                                         if ((*j)->ports_are_inputs() == inputs) {
 458                                                 program->add_bundle (*j);
 459                                         }
 460                                 }
 461                         }
 462                 }
 463         }
 464
 465         /* our sync ports */
 466
 467         if ((type == DataType::MIDI || type == DataType::NIL)) {
 468                 boost::shared_ptr<Bundle> sync (new Bundle (_("Sync"), inputs));
 469                 AudioEngine* ae = AudioEngine::instance();
 470
 471                 if (inputs) {
 472                         sync->add_channel (
 473                                 _("MTC in"), DataType::MIDI, ae->make_port_name_non_relative (session->mtc_input_port()->name())
 474                                 );
 475                         sync->add_channel (
 476                                 _("MIDI control in"), DataType::MIDI, ae->make_port_name_non_relative (session->midi_input_port()->name())
 477                                 );
 478                         sync->add_channel (
 479                                 _("MIDI clock in"), DataType::MIDI, ae->make_port_name_non_relative (session->midi_clock_input_port()->name())
 480                                 );
 481                         sync->add_channel (
 482                                 _("MMC in"), DataType::MIDI, ae->make_port_name_non_relative (session->mmc_input_port()->name())
 483                                 );
 484                 } else {
 485                         sync->add_channel (
 486                                 _("MTC out"), DataType::MIDI, ae->make_port_name_non_relative (session->mtc_output_port()->name())
 487                                 );
 488                         sync->add_channel (
 489                                 _("MIDI control out"), DataType::MIDI, ae->make_port_name_non_relative (session->midi_output_port()->name())
 490                                 );
 491                         sync->add_channel (
 492                                 _("MIDI clock out"), DataType::MIDI, ae->make_port_name_non_relative (session->midi_clock_output_port()->name())
 493                                 );
 494                         sync->add_channel (
 495                                 _("MMC out"), DataType::MIDI, ae->make_port_name_non_relative (session->mmc_output_port()->name())
 496                                 );
 497                 }
 498
 499                 program->add_bundle (sync);
 500         }
 501
 502         /* Now find all other ports that we haven't thought of yet */
 503
 504         std::vector<std::string> extra_system[DataType::num_types];
 505         std::vector<std::string> extra_program[DataType::num_types];
 506         std::vector<std::string> extra_other[DataType::num_types];
 507
 508         string lpn (PROGRAM_NAME);
 509         boost::to_lower (lpn);
 510         string lpnc = lpn;
 511         lpnc += ':';
 512
 513         vector<string> ports;
 514         if (AudioEngine::instance()->get_ports ("", type, inputs ? IsInput : IsOutput, ports) > 0) {
 515
 516                 for (vector<string>::const_iterator s = ports.begin(); s != ports.end(); ) {
 517
 518                         std::string const p = *s;
 519
 520                         if (!system->has_port(p) &&
 521                             !bus->has_port(p) &&
 522                             !track->has_port(p) &&
 523                             !program->has_port(p) &&
 524                             !other->has_port(p)) {
 525
 526                                 /* special hack: ignore MIDI ports labelled Midi-Through. these
 527                                    are basically useless and mess things up for default
 528                                    connections.
 529                                 */
 530
 531                                 if (p.find ("Midi-Through") != string::npos) {
 532                                         ++s;
 533                                         continue;
 534                                 }
 535
 536                                 /* special hack: ignore our monitor inputs (which show up here because
 537                                    we excluded them earlier.
 538                                 */
 539
 540                                 string lp = p;
 541                                 boost::to_lower (lp);
 542
 543                                 if ((lp.find (N_(":monitor")) != string::npos) &&
 544                                     (lp.find (lpn) != string::npos)) {
 545                                         ++s;
 546                                         continue;
 547                                 }
 548
 549                                 /* can't use the audio engine for this as we
 550                                  * are looking at ports not owned by the
 551                                  * application, and the audio engine/port
 552                                  * manager doesn't seem them.
 553                                  */
 554
 555                                 PortEngine::PortHandle ph = AudioEngine::instance()->port_engine().get_port_by_name (p);
 556                                 if (ph) {
 557                                         DataType t (AudioEngine::instance()->port_engine().port_data_type (ph));
 558                                         if (t != DataType::NIL) {
 559                                                 if (port_has_prefix (p, N_("system:")) ||
 560                                                     port_has_prefix (p, N_("alsa_pcm:")) ||
 561                                                     port_has_prefix (p, N_("alsa_midi:"))) {
 562                                                         extra_system[t].push_back (p);
 563                                                 } else if (port_has_prefix (p, lpnc)) {
 564                                                         /* Hide scene ports from non-Tracks Live builds */
 565                                                         if (!ARDOUR::Profile->get_trx()) {
 566                                                                 if (p.find (_("Scene ")) != string::npos) {
 567                                                                         ++s;
 568                                                                         continue;
 569                                                                 }
 570                                                         }
 571                                                         extra_program[t].push_back (p);
 572                                                 } else {
 573                                                         extra_other[t].push_back (p);
 574                                                 }
 575                                         }
 576                                 }
 577                         }
 578
 579                         ++s;
 580                 }
 581         }
 582
 583         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 584                 if (!extra_system[*i].empty()) {
 585                         boost::shared_ptr<Bundle> b = make_bundle_from_ports (extra_system[*i], *i, inputs);
 586                         system->add_bundle (b);
 587                 }
 588         }
 589
 590         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 591                 if (!extra_program[*i].empty()) {
 592                         /* remove program name prefix from port name and use rest as bundle name */
 593                         std::string bundle_name = extra_program[*i].front().substr (lpnc.length());
 594                         boost::shared_ptr<Bundle> b = make_bundle_from_ports (extra_program[*i], *i, inputs, bundle_name);
 595                         program->add_bundle (b);
 596                 }
 597         }
 598
 599         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 600                 if (extra_other[*i].empty()) continue;
 601                 std::string cp;
 602                 std::vector<std::string> nb;
 603                 for (uint32_t j = 0; j < extra_other[*i].size(); ++j) {
 604                         std::string nn = extra_other[*i][j];
 605                         std::string pf = nn.substr (0, nn.find_first_of (":") + 1);
 606                         if (pf != cp && !nb.empty()) {
 607                                 boost::shared_ptr<Bundle> b = make_bundle_from_ports (nb, *i, inputs);
 608                                 other->add_bundle (b);
 609                                 nb.clear();
 610                         }
 611                         cp = pf;
 612                         nb.push_back(extra_other[*i][j]);
 613                 }
 614                 if (!nb.empty()) {
 615                         boost::shared_ptr<Bundle> b = make_bundle_from_ports (nb, *i, inputs);
 616                         other->add_bundle (b);
 617                 }
 618         }
 619
 620         if (!allow_dups) {
 621                 system->remove_duplicates ();
 622         }
 623
 624         add_group_if_not_empty (other);
 625         if (type != DataType::MIDI) {
 626                 add_group_if_not_empty (bus);
 627         }
 628         add_group_if_not_empty (track);
 629         add_group_if_not_empty (program);
 630         add_group_if_not_empty (system);
 631
 632         emit_changed ();
 633 }
 634
 635 boost::shared_ptr<Bundle>
 636 PortGroupList::make_bundle_from_ports (std::vector<std::string> const & p, ARDOUR::DataType type, bool inputs, std::string const& bundle_name) const
 637 {
 638         boost::shared_ptr<Bundle> b (new Bundle ("", inputs));
 639         std::string const pre = common_prefix (p);
 640
 641         if (!bundle_name.empty()) {
 642                 b->set_name (bundle_name);
 643         } else {
 644                 if (!pre.empty()) {
 645                         b->set_name (pre.substr (0, pre.length() - 1));
 646                 }
 647         }
 648
 649         for (uint32_t j = 0; j < p.size(); ++j) {
 650                 std::string n = p[j].substr (pre.length());
 651                 std::string pn = AudioEngine::instance()->get_pretty_name_by_name (p[j]);
 652                 if (!pn.empty()) {
 653                         n = pn;
 654                 }
 655                 b->add_channel (n, type);
 656                 b->set_port (j, p[j]);
 657         }
 658
 659         return b;
 660 }
 661
 662 bool
 663 PortGroupList::port_has_prefix (const std::string& n, const std::string& p) const
 664 {
 665         return n.substr (0, p.length()) == p;
 666 }
 667
 668 std::string
 669 PortGroupList::common_prefix_before (std::vector<std::string> const & p, std::string const & s) const
 670 {
 671         /* we must have some strings and the first must contain the separator string */
 672         if (p.empty() || p[0].find_first_of (s) == std::string::npos) {
 673                 return "";
 674         }
 675
 676         /* prefix of the first string */
 677         std::string const fp = p[0].substr (0, p[0].find_first_of (s) + 1);
 678
 679         /* see if the other strings also start with fp */
 680         uint32_t j = 1;
 681         while (j < p.size()) {
 682                 if (p[j].substr (0, fp.length()) != fp) {
 683                         break;
 684                 }
 685                 ++j;
 686         }
 687
 688         if (j != p.size()) {
 689                 return "";
 690         }
 691
 692         return fp;
 693 }
 694
 695
 696 std::string
 697 PortGroupList::common_prefix (std::vector<std::string> const & p) const
 698 {
 699         /* common prefix before '/' ? */
 700         std::string cp = common_prefix_before (p, "/");
 701         if (!cp.empty()) {
 702                 return cp;
 703         }
 704
 705         cp = common_prefix_before (p, ":");
 706         if (!cp.empty()) {
 707                 return cp;
 708         }
 709
 710         return "";
 711 }
 712
 713 void
 714 PortGroupList::clear ()
 715 {
 716         _groups.clear ();
 717         _bundle_changed_connections.drop_connections ();
 718         emit_changed ();
 719 }
 720
 721
 722 PortGroup::BundleList const &
 723 PortGroupList::bundles () const
 724 {
 725         _bundles.clear ();
 726
 727         for (PortGroupList::List::const_iterator i = begin (); i != end (); ++i) {
 728                 std::copy ((*i)->bundles().begin(), (*i)->bundles().end(), std::back_inserter (_bundles));
 729         }
 730
 731         return _bundles;
 732 }
 733
 734 ChanCount
 735 PortGroupList::total_channels () const
 736 {
 737         ChanCount n;
 738
 739         for (PortGroupList::List::const_iterator i = begin(); i != end(); ++i) {
 740                 n += (*i)->total_channels ();
 741         }
 742
 743         return n;
 744 }
 745
 746 void
 747 PortGroupList::add_group_if_not_empty (boost::shared_ptr<PortGroup> g)
 748 {
 749         if (!g->bundles().empty ()) {
 750                 add_group (g);
 751         }
 752 }
 753
 754 void
 755 PortGroupList::add_group (boost::shared_ptr<PortGroup> g)
 756 {
 757         _groups.push_back (g);
 758
 759         g->Changed.connect (_changed_connections, invalidator (*this), boost::bind (&PortGroupList::emit_changed, this), gui_context());
 760         g->BundleChanged.connect (_bundle_changed_connections, invalidator (*this), boost::bind (&PortGroupList::emit_bundle_changed, this, _1), gui_context());
 761
 762         emit_changed ();
 763 }
 764
 765 void
 766 PortGroupList::remove_bundle (boost::shared_ptr<Bundle> b)
 767 {
 768         for (List::iterator i = _groups.begin(); i != _groups.end(); ++i) {
 769                 (*i)->remove_bundle (b);
 770         }
 771
 772         emit_changed ();
 773 }
 774
 775 void
 776 PortGroupList::emit_changed ()
 777 {
 778         if (_signals_suspended) {
 779                 _pending_change = true;
 780         } else {
 781                 Changed ();
 782         }
 783 }
 784
 785 void
 786 PortGroupList::emit_bundle_changed (Bundle::Change c)
 787 {
 788         if (_signals_suspended) {
 789                 _pending_bundle_change = c;
 790         } else {
 791                 BundleChanged (c);
 792         }
 793 }
 794 void
 795 PortGroupList::suspend_signals ()
 796 {
 797         _signals_suspended = true;
 798 }
 799
 800 void
 801 PortGroupList::resume_signals ()
 802 {
 803         if (_pending_change) {
 804                 Changed ();
 805                 _pending_change = false;
 806         }
 807
 808         if (_pending_bundle_change != 0) {
 809                 BundleChanged (_pending_bundle_change);
 810                 _pending_bundle_change = (ARDOUR::Bundle::Change) 0;
 811         }
 812
 813         _signals_suspended = false;
 814 }
 815
 816 boost::shared_ptr<IO>
 817 PortGroupList::io_from_bundle (boost::shared_ptr<ARDOUR::Bundle> b) const
 818 {
 819         List::const_iterator i = _groups.begin ();
 820         while (i != _groups.end()) {
 821                 boost::shared_ptr<IO> io = (*i)->io_from_bundle (b);
 822                 if (io) {
 823                         return io;
 824                 }
 825                 ++i;
 826         }
 827
 828         return boost::shared_ptr<IO> ();
 829 }
 830
 831 bool
 832 PortGroupList::empty () const
 833 {
 834         return _groups.empty ();
 835 }