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