handle deletion of UI objects between the time that a callback is queued with the...
[ardour.git] / 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
23 #include "ardour/audio_track.h"
24 #include "ardour/audioengine.h"
25 #include "ardour/bundle.h"
26 #include "ardour/user_bundle.h"
27 #include "ardour/io_processor.h"
28 #include "ardour/midi_track.h"
29 #include "ardour/port.h"
30 #include "ardour/session.h"
31 #include "ardour/auditioner.h"
32
33 #include "gui_thread.h"
34 #include "port_group.h"
35 #include "port_matrix.h"
36 #include "time_axis_view.h"
37 #include "public_editor.h"
38
39 #include "i18n.h"
40
41 using namespace std;
42 using namespace Gtk;
43 using namespace ARDOUR;
44
45 /** PortGroup constructor.
46  * @param n Name.
47  */
48 PortGroup::PortGroup (std::string const & n)
49         : name (n)
50 {
51
52 }
53
54 PortGroup::~PortGroup()
55 {
56         for (BundleList::iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
57                 delete *i;
58         }
59         _bundles.clear ();
60 }
61
62 /** Add a bundle to a group.
63  *  @param b Bundle.
64  *  @param allow_dups true to allow the group to contain more than one bundle with the same port, otherwise false.
65  */
66 void
67 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, bool allow_dups)
68 {
69         add_bundle_internal (b, boost::shared_ptr<IO> (), false, Gdk::Color (), allow_dups);
70 }
71
72 /** Add a bundle to a group.
73  *  @param b Bundle.
74  *  @param io IO whose ports are in the bundle.
75  */
76 void
77 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io)
78 {
79         add_bundle_internal (b, io, false, Gdk::Color (), false);
80 }
81
82 /** Add a bundle to a group.
83  *  @param b Bundle.
84  *  @param c Colour to represent the bundle with.
85  */
86 void
87 PortGroup::add_bundle (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io, Gdk::Color c)
88 {
89         add_bundle_internal (b, io, true, c, false);
90 }
91
92 PortGroup::BundleRecord::BundleRecord (boost::shared_ptr<ARDOUR::Bundle> b, boost::shared_ptr<ARDOUR::IO> iop, Gdk::Color c, bool has_c)
93         : bundle (b)
94         , io (iop)
95         , colour (c)
96         , has_colour (has_c)
97 {
98 }
99
100 void
101 PortGroup::add_bundle_internal (boost::shared_ptr<Bundle> b, boost::shared_ptr<IO> io, bool has_colour, Gdk::Color colour, bool allow_dups)
102 {
103         assert (b.get());
104
105         if (!allow_dups) {
106                 
107                 /* don't add this bundle if we already have one with the same ports */
108                 
109                 BundleList::iterator i = _bundles.begin ();
110                 while (i != _bundles.end() && b->has_same_ports ((*i)->bundle) == false) {
111                         ++i;
112                 }
113                 
114                 if (i != _bundles.end ()) {
115                         return;
116                 }
117         }
118
119         BundleRecord* br = new BundleRecord (b, io, colour, has_colour);
120         b->Changed.connect (br->changed_connection, invalidator (*this), ui_bind (&PortGroup::bundle_changed, this, _1), gui_context());
121         _bundles.push_back (br);
122
123         Changed ();     
124 }
125
126 void
127 PortGroup::remove_bundle (boost::shared_ptr<Bundle> b)
128 {
129         assert (b.get());
130
131         BundleList::iterator i = _bundles.begin ();
132         while (i != _bundles.end() && (*i)->bundle != b) {
133                 ++i;
134         }
135
136         if (i == _bundles.end()) {
137                 return;
138         }
139
140         delete *i;
141         _bundles.erase (i);
142
143         Changed ();
144 }
145
146 void
147 PortGroup::bundle_changed (Bundle::Change c)
148 {
149         BundleChanged (c);
150 }
151
152
153 void
154 PortGroup::clear ()
155 {
156         for (BundleList::iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
157                 delete *i;
158         }
159
160         _bundles.clear ();
161         Changed ();
162 }
163
164 bool
165 PortGroup::has_port (std::string const& p) const
166 {
167         for (BundleList::const_iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
168                 if ((*i)->bundle->offers_port_alone (p)) {
169                         return true;
170                 }
171         }
172
173         return false;
174 }
175
176 boost::shared_ptr<Bundle>
177 PortGroup::only_bundle ()
178 {
179         assert (_bundles.size() == 1);
180         return _bundles.front()->bundle;
181 }
182
183
184 uint32_t
185 PortGroup::total_channels () const
186 {
187         uint32_t n = 0;
188         for (BundleList::const_iterator i = _bundles.begin(); i != _bundles.end(); ++i) {
189                 n += (*i)->bundle->nchannels ();
190         }
191
192         return n;
193 }
194
195 boost::shared_ptr<IO>
196 PortGroup::io_from_bundle (boost::shared_ptr<ARDOUR::Bundle> b) const
197 {
198         BundleList::const_iterator i = _bundles.begin ();
199         while (i != _bundles.end() && (*i)->bundle != b) {
200                 ++i;
201         }
202
203         if (i == _bundles.end()) {
204                 return boost::shared_ptr<IO> ();
205         }
206
207         return (*i)->io;
208 }
209
210 /** Remove bundles whose channels are already represented by other, larger bundles */
211 void
212 PortGroup::remove_duplicates ()
213 {
214         BundleList::iterator i = _bundles.begin();
215         while (i != _bundles.end()) {
216
217                 BundleList::iterator tmp = i;
218                 ++tmp;
219
220                 bool remove = false;
221
222                 for (BundleList::iterator j = _bundles.begin(); j != _bundles.end(); ++j) {
223
224                         if ((*j)->bundle->nchannels() > (*i)->bundle->nchannels()) {
225                                 /* this bundle is larger */
226
227                                 uint32_t k = 0;
228                                 while (k < (*i)->bundle->nchannels()) {
229                                         /* see if this channel on *i has an equivalent on *j */
230                                         uint32_t l = 0;
231                                         while (l < (*j)->bundle->nchannels() && (*i)->bundle->channel_ports (k) != (*j)->bundle->channel_ports (l)) {
232                                                 ++l;
233                                         }
234
235                                         if (l == (*j)->bundle->nchannels()) {
236                                                 /* it does not */
237                                                 break;
238                                         }
239
240                                         ++k;
241                                 }
242
243                                 if (k == (*i)->bundle->nchannels ()) {
244                                         /* all channels on *i are represented by the larger bundle *j, so remove *i */
245                                         remove = true;
246                                         break;
247                                 }
248                         }
249                 }
250                 
251                 if (remove) {
252                         _bundles.erase (i);
253                 }
254                 
255                 i = tmp;
256         }
257 }
258
259
260 /** PortGroupList constructor.
261  */
262 PortGroupList::PortGroupList ()
263         : _type (DataType::AUDIO), _signals_suspended (false), _pending_change (false), _pending_bundle_change ((Bundle::Change) 0)
264 {
265
266 }
267
268 PortGroupList::~PortGroupList() 
269 {
270         /* XXX need to clean up bundles, but ownership shared with PortGroups */
271 }
272
273 void
274 PortGroupList::set_type (DataType t)
275 {
276         _type = t;
277         clear ();
278 }
279
280 void
281 PortGroupList::maybe_add_processor_to_list (
282         boost::weak_ptr<Processor> wp, list<boost::shared_ptr<Bundle> >* route_bundles, 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_bundles->push_back (io->bundle ());
299                         used_io.insert (io);
300                 }
301         }
302 }
303
304
305 /** Gather bundles from around the system and put them in this PortGroupList */
306 void
307 PortGroupList::gather (ARDOUR::Session* session, bool inputs, bool allow_dups)
308 {
309         clear ();
310
311         if (session == 0) {
312                 return;
313         }
314
315         boost::shared_ptr<PortGroup> bus (new PortGroup (_("Bus")));
316         boost::shared_ptr<PortGroup> track (new PortGroup (_("Track")));
317         boost::shared_ptr<PortGroup> system (new PortGroup (_("System")));
318         boost::shared_ptr<PortGroup> ardour (new PortGroup (_("Ardour")));
319         boost::shared_ptr<PortGroup> other (new PortGroup (_("Other")));
320
321         /* Find the bundles for routes.  We use the RouteBundle class to join
322            the route's input/output and processor bundles together so that they
323            are presented as one bundle in the matrix. */
324
325         boost::shared_ptr<RouteList> routes = session->get_routes ();
326
327         for (RouteList::const_iterator i = routes->begin(); i != routes->end(); ++i) {
328
329                 list<boost::shared_ptr<Bundle> > route_bundles;
330
331                 /* keep track of IOs that we have taken bundles from,
332                    so that we can avoid taking the same IO from both
333                    Route::output() and the main_outs Delivery */
334
335                 set<boost::shared_ptr<IO> > used_io;
336                 boost::shared_ptr<IO> io = inputs ? (*i)->input() : (*i)->output();
337                 used_io.insert (io);
338
339                 route_bundles.push_back (io->bundle ());
340
341                 (*i)->foreach_processor (boost::bind (&PortGroupList::maybe_add_processor_to_list, this, _1, &route_bundles, inputs, used_io));
342
343                 /* Work out which group to put these bundles in */
344                 boost::shared_ptr<PortGroup> g;
345                 if (_type == DataType::AUDIO) {
346
347                         if (boost::dynamic_pointer_cast<AudioTrack> (*i)) {
348                                 g = track;
349                         } else if (!boost::dynamic_pointer_cast<MidiTrack>(*i)) {
350                                 g = bus;
351                         }
352
353
354                 } else if (_type == DataType::MIDI) {
355
356                         if (boost::dynamic_pointer_cast<MidiTrack> (*i)) {
357                                 g = track;
358                         }
359
360                         /* No MIDI busses yet */
361                 }
362
363                 if (g) {
364
365                         TimeAxisView* tv = PublicEditor::instance().axis_view_from_route (*i);
366                         for (list<boost::shared_ptr<Bundle> >::iterator i = route_bundles.begin(); i != route_bundles.end(); ++i) {
367                                 if (tv) {
368                                         g->add_bundle (*i, io, tv->color ());
369                                 } else {
370                                         g->add_bundle (*i, io);
371                                 }
372                         }
373                 }
374         }
375
376         /* Bundles owned by the session; add user bundles first, then normal ones, so
377            that UserBundles that offer the same ports as a normal bundle get priority
378         */
379
380         boost::shared_ptr<BundleList> b = session->bundles ();
381
382         for (BundleList::iterator i = b->begin(); i != b->end(); ++i) {
383                 if (boost::dynamic_pointer_cast<UserBundle> (*i) && (*i)->ports_are_inputs() == inputs && (*i)->type() == _type) {
384                         system->add_bundle (*i, allow_dups);
385                 }
386         }
387
388         for (BundleList::iterator i = b->begin(); i != b->end(); ++i) {
389                 if (boost::dynamic_pointer_cast<UserBundle> (*i) == 0 && (*i)->ports_are_inputs() == inputs && (*i)->type() == _type) {
390                         system->add_bundle (*i, allow_dups);
391                 }
392         }
393         
394         /* Ardour stuff */
395
396         if (!inputs && _type == DataType::AUDIO) {
397                 ardour->add_bundle (session->the_auditioner()->output()->bundle());
398                 ardour->add_bundle (session->click_io()->bundle());
399         }
400
401         /* Now find all other ports that we haven't thought of yet */
402
403         std::vector<std::string> extra_system;
404         std::vector<std::string> extra_other;
405
406         const char **ports = session->engine().get_ports ("", _type.to_jack_type(), inputs ?
407                                                          JackPortIsInput : JackPortIsOutput);
408         if (ports) {
409
410                 int n = 0;
411                 string client_matching_string;
412
413                 client_matching_string = session->engine().client_name();
414                 client_matching_string += ':';
415
416                 while (ports[n]) {
417
418                         std::string const p = ports[n];
419
420                         if (!system->has_port(p) &&
421                             !bus->has_port(p) &&
422                             !track->has_port(p) &&
423                             !ardour->has_port(p) &&
424                             !other->has_port(p)) {
425
426                                 if (port_has_prefix (p, "system:") ||
427                                     port_has_prefix (p, "alsa_pcm") ||
428                                     port_has_prefix (p, "ardour:")) {
429                                         extra_system.push_back (p);
430                                 } else {
431                                         extra_other.push_back (p);
432                                 }
433                         }
434
435                         ++n;
436                 }
437
438                 free (ports);
439         }
440
441         if (!extra_system.empty()) {
442                 boost::shared_ptr<Bundle> b = make_bundle_from_ports (extra_system, inputs);
443                 system->add_bundle (b);
444         }
445
446         if (!extra_other.empty()) {
447                 other->add_bundle (make_bundle_from_ports (extra_other, inputs));
448         }
449
450         if (!allow_dups) {
451                 system->remove_duplicates ();
452         }
453
454         add_group_if_not_empty (other);
455         add_group_if_not_empty (bus);
456         add_group_if_not_empty (track);
457         add_group_if_not_empty (ardour);
458         add_group_if_not_empty (system);
459
460         emit_changed ();
461 }
462
463 boost::shared_ptr<Bundle>
464 PortGroupList::make_bundle_from_ports (std::vector<std::string> const & p, bool inputs) const
465 {
466         boost::shared_ptr<Bundle> b (new Bundle ("", _type, inputs));
467
468         std::string const pre = common_prefix (p);
469         if (!pre.empty()) {
470                 b->set_name (pre.substr (0, pre.length() - 1));
471         }
472
473         for (uint32_t j = 0; j < p.size(); ++j) {
474                 b->add_channel (p[j].substr (pre.length()));
475                 b->set_port (j, p[j]);
476         }
477
478         return b;
479 }
480
481 bool
482 PortGroupList::port_has_prefix (const std::string& n, const std::string& p) const
483 {
484         return n.substr (0, p.length()) == p;
485 }
486
487 std::string
488 PortGroupList::common_prefix_before (std::vector<std::string> const & p, std::string const & s) const
489 {
490         /* we must have some strings and the first must contain the separator string */
491         if (p.empty() || p[0].find_first_of (s) == std::string::npos) {
492                 return "";
493         }
494
495         /* prefix of the first string */
496         std::string const fp = p[0].substr (0, p[0].find_first_of (s) + 1);
497
498         /* see if the other strings also start with fp */
499         uint32_t j = 1;
500         while (j < p.size()) {
501                 if (p[j].substr (0, fp.length()) != fp) {
502                         break;
503                 }
504                 ++j;
505         }
506
507         if (j != p.size()) {
508                 return "";
509         }
510
511         return fp;
512 }
513
514
515 std::string
516 PortGroupList::common_prefix (std::vector<std::string> const & p) const
517 {
518         /* common prefix before '/' ? */
519         std::string cp = common_prefix_before (p, "/");
520         if (!cp.empty()) {
521                 return cp;
522         }
523
524         cp = common_prefix_before (p, ":");
525         if (!cp.empty()) {
526                 return cp;
527         }
528
529         return "";
530 }
531
532 void
533 PortGroupList::clear ()
534 {
535         _groups.clear ();
536         _bundle_changed_connections.drop_connections ();
537         emit_changed ();
538 }
539
540
541 PortGroup::BundleList const &
542 PortGroupList::bundles () const
543 {
544         _bundles.clear ();
545
546         for (PortGroupList::List::const_iterator i = begin (); i != end (); ++i) {
547                 std::copy ((*i)->bundles().begin(), (*i)->bundles().end(), std::back_inserter (_bundles));
548         }
549
550         return _bundles;
551 }
552
553 uint32_t
554 PortGroupList::total_channels () const
555 {
556         uint32_t n = 0;
557
558         for (PortGroupList::List::const_iterator i = begin(); i != end(); ++i) {
559                 n += (*i)->total_channels ();
560         }
561
562         return n;
563 }
564
565 void
566 PortGroupList::add_group_if_not_empty (boost::shared_ptr<PortGroup> g)
567 {
568         if (!g->bundles().empty ()) {
569                 add_group (g);
570         }
571 }
572
573 void
574 PortGroupList::add_group (boost::shared_ptr<PortGroup> g)
575 {
576         _groups.push_back (g);
577
578         g->Changed.connect (_changed_connections, invalidator (*this), boost::bind (&PortGroupList::emit_changed, this), gui_context());
579         g->BundleChanged.connect (_bundle_changed_connections, invalidator (*this), ui_bind (&PortGroupList::emit_bundle_changed, this, _1), gui_context());
580
581         emit_changed ();
582 }
583
584 void
585 PortGroupList::remove_bundle (boost::shared_ptr<Bundle> b)
586 {
587         for (List::iterator i = _groups.begin(); i != _groups.end(); ++i) {
588                 (*i)->remove_bundle (b);
589         }
590
591         emit_changed ();
592 }
593
594 void
595 PortGroupList::emit_changed ()
596 {
597         if (_signals_suspended) {
598                 _pending_change = true;
599         } else {
600                 Changed ();
601         }
602 }
603
604 void
605 PortGroupList::emit_bundle_changed (Bundle::Change c)
606 {
607         if (_signals_suspended) {
608                 _pending_bundle_change = c;
609         } else {
610                 BundleChanged (c);
611         }
612 }
613 void
614 PortGroupList::suspend_signals ()
615 {
616         _signals_suspended = true;
617 }
618
619 void
620 PortGroupList::resume_signals ()
621 {
622         if (_pending_change) {
623                 Changed ();
624                 _pending_change = false;
625         }
626
627         if (_pending_bundle_change != 0) {
628                 BundleChanged (_pending_bundle_change);
629                 _pending_bundle_change = (ARDOUR::Bundle::Change) 0;
630         }
631
632         _signals_suspended = false;
633 }
634
635 boost::shared_ptr<IO>
636 PortGroupList::io_from_bundle (boost::shared_ptr<ARDOUR::Bundle> b) const
637 {
638         List::const_iterator i = _groups.begin ();
639         while (i != _groups.end()) {
640                 boost::shared_ptr<IO> io = (*i)->io_from_bundle (b);
641                 if (io) {
642                         return io;
643                 }
644                 ++i;
645         }
646
647         return boost::shared_ptr<IO> ();
648 }
649
650 bool
651 PortGroupList::empty () const
652 {
653         List::const_iterator i = _groups.begin ();
654         while (i != _groups.end() && (*i)->total_channels() == 0) {
655                 ++i;
656         }
657
658         return (i == _groups.end());
659 }
660