libs/ardour/midi_track.cc

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3         By Dave Robillard, 2006
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19 #include <pbd/error.h>
  20 #include <sigc++/retype.h>
  21 #include <sigc++/retype_return.h>
  22 #include <sigc++/bind.h>
  23
  24 #include <ardour/midi_track.h>
  25 #include <ardour/midi_diskstream.h>
  26 #include <ardour/session.h>
  27 #include <ardour/redirect.h>
  28 #include <ardour/midi_region.h>
  29 #include <ardour/midi_source.h>
  30 #include <ardour/route_group_specialized.h>
  31 #include <ardour/insert.h>
  32 #include <ardour/midi_playlist.h>
  33 #include <ardour/panner.h>
  34 #include <ardour/utils.h>
  35
  36 #include "i18n.h"
  37
  38 using namespace std;
  39 using namespace ARDOUR;
  40 using namespace PBD;
  41
  42 MidiTrack::MidiTrack (Session& sess, string name, Route::Flag flag, TrackMode mode)
  43         : Track (sess, name, flag, mode, Buffer::MIDI)
  44 {
  45         MidiDiskstream::Flag dflags = MidiDiskstream::Flag (0);
  46
  47         if (_flags & Hidden) {
  48                 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Hidden);
  49         } else {
  50                 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Recordable);
  51         }
  52
  53         if (mode == Destructive) {
  54                 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Destructive);
  55         }
  56
  57         MidiDiskstream* ds = new MidiDiskstream (_session, name, dflags);
  58
  59         _declickable = true;
  60         _freeze_record.state = NoFreeze;
  61         _saved_meter_point = _meter_point;
  62         _mode = mode;
  63
  64         set_diskstream (*ds, this);
  65 }
  66
  67 MidiTrack::MidiTrack (Session& sess, const XMLNode& node)
  68         : Track (sess, node)
  69 {
  70         _freeze_record.state = NoFreeze;
  71         set_state (node);
  72         _declickable = true;
  73         _saved_meter_point = _meter_point;
  74 }
  75
  76 MidiTrack::~MidiTrack ()
  77 {
  78         if (_diskstream) {
  79                 _diskstream->unref();
  80         }
  81 }
  82
  83 #if 0
  84 void
  85 MidiTrack::handle_smpte_offset_change ()
  86 {
  87         diskstream
  88 }
  89 #endif
  90
  91
  92 int
  93 MidiTrack::set_diskstream (MidiDiskstream& ds, void *src)
  94 {
  95         if (_diskstream) {
  96                 _diskstream->unref();
  97         }
  98
  99         _diskstream = &ds.ref();
 100         _diskstream->set_io (*this);
 101         _diskstream->set_destructive (_mode == Destructive);
 102
 103         _diskstream->set_record_enabled (false, this);
 104         //_diskstream->monitor_input (false);
 105
 106         ic_connection.disconnect();
 107         ic_connection = input_changed.connect (mem_fun (*_diskstream, &MidiDiskstream::handle_input_change));
 108
 109         DiskstreamChanged (src); /* EMIT SIGNAL */
 110
 111         return 0;
 112 }
 113
 114 int
 115 MidiTrack::use_diskstream (string name)
 116 {
 117         MidiDiskstream *dstream;
 118
 119         if ((dstream = dynamic_cast<MidiDiskstream*>(_session.diskstream_by_name (name))) == 0) {
 120           error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), name) << endmsg;
 121                 return -1;
 122         }
 123
 124         return set_diskstream (*dstream, this);
 125 }
 126
 127 int
 128 MidiTrack::use_diskstream (const PBD::ID& id)
 129 {
 130         MidiDiskstream *dstream;
 131
 132         if ((dstream = dynamic_cast<MidiDiskstream*>(_session.diskstream_by_id (id))) == 0) {
 133                 error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), id) << endmsg;
 134                 return -1;
 135         }
 136
 137         return set_diskstream (*dstream, this);
 138 }
 139
 140 bool
 141 MidiTrack::record_enabled () const
 142 {
 143         return _diskstream->record_enabled ();
 144 }
 145
 146 void
 147 MidiTrack::set_record_enable (bool yn, void *src)
 148 {
 149         if (_freeze_record.state == Frozen) {
 150                 return;
 151         }
 152 #if 0
 153         if (_mix_group && src != _mix_group && _mix_group->is_active()) {
 154                 _mix_group->apply (&MidiTrack::set_record_enable, yn, _mix_group);
 155                 return;
 156         }
 157
 158         /* keep track of the meter point as it was before we rec-enabled */
 159
 160         if (!diskstream->record_enabled()) {
 161                 _saved_meter_point = _meter_point;
 162         }
 163
 164         diskstream->set_record_enabled (yn, src);
 165
 166         if (diskstream->record_enabled()) {
 167                 set_meter_point (MeterInput, this);
 168         } else {
 169                 set_meter_point (_saved_meter_point, this);
 170         }
 171
 172         if (_session.get_midi_feedback()) {
 173                 _midi_rec_enable_control.send_feedback (record_enabled());
 174         }
 175 #endif
 176 }
 177
 178 MidiDiskstream&
 179 MidiTrack::midi_diskstream() const
 180 {
 181         return *dynamic_cast<MidiDiskstream*>(_diskstream);
 182 }
 183
 184 int
 185 MidiTrack::set_state (const XMLNode& node)
 186 {
 187         const XMLProperty *prop;
 188         XMLNodeConstIterator iter;
 189
 190         if (Route::set_state (node)) {
 191                 return -1;
 192         }
 193
 194         if ((prop = node.property (X_("mode"))) != 0) {
 195                 if (prop->value() == X_("normal")) {
 196                         _mode = Normal;
 197                 } else if (prop->value() == X_("destructive")) {
 198                         _mode = Destructive;
 199                 } else {
 200                         warning << string_compose ("unknown midi track mode \"%1\" seen and ignored", prop->value()) << endmsg;
 201                         _mode = Normal;
 202                 }
 203         } else {
 204                 _mode = Normal;
 205         }
 206
 207         if ((prop = node.property ("diskstream-id")) == 0) {
 208
 209                 /* some old sessions use the diskstream name rather than the ID */
 210
 211                 if ((prop = node.property ("diskstream")) == 0) {
 212                         fatal << _("programming error: MidiTrack given state without diskstream!") << endmsg;
 213                         /*NOTREACHED*/
 214                         return -1;
 215                 }
 216
 217                 if (use_diskstream (prop->value())) {
 218                         return -1;
 219                 }
 220
 221         } else {
 222
 223                 PBD::ID id (prop->value());
 224
 225                 if (use_diskstream (id)) {
 226                         return -1;
 227                 }
 228         }
 229
 230
 231         XMLNodeList nlist;
 232         XMLNodeConstIterator niter;
 233         XMLNode *child;
 234
 235         nlist = node.children();
 236         for (niter = nlist.begin(); niter != nlist.end(); ++niter){
 237                 child = *niter;
 238
 239                 if (child->name() == X_("remote_control")) {
 240                         if ((prop = child->property (X_("id"))) != 0) {
 241                                 int32_t x;
 242                                 sscanf (prop->value().c_str(), "%d", &x);
 243                                 set_remote_control_id (x);
 244                         }
 245                 }
 246         }
 247
 248         pending_state = const_cast<XMLNode*> (&node);
 249
 250         _session.StateReady.connect (mem_fun (*this, &MidiTrack::set_state_part_two));
 251
 252         return 0;
 253 }
 254
 255 XMLNode&
 256 MidiTrack::state(bool full_state)
 257 {
 258         XMLNode& root (Route::state(full_state));
 259         XMLNode* freeze_node;
 260         char buf[64];
 261
 262         if (_freeze_record.playlist) {
 263                 XMLNode* inode;
 264
 265                 freeze_node = new XMLNode (X_("freeze-info"));
 266                 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
 267                 snprintf (buf, sizeof (buf), "%d", (int) _freeze_record.state);
 268                 freeze_node->add_property ("state", buf);
 269
 270                 for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 271                         inode = new XMLNode (X_("insert"));
 272                         (*i)->id.print (buf);
 273                         inode->add_property (X_("id"), buf);
 274                         inode->add_child_copy ((*i)->state);
 275
 276                         freeze_node->add_child_nocopy (*inode);
 277                 }
 278
 279                 root.add_child_nocopy (*freeze_node);
 280         }
 281
 282         /* Alignment: act as a proxy for the diskstream */
 283
 284         XMLNode* align_node = new XMLNode (X_("alignment"));
 285         switch (_diskstream->alignment_style()) {
 286         case ExistingMaterial:
 287                 snprintf (buf, sizeof (buf), X_("existing"));
 288                 break;
 289         case CaptureTime:
 290                 snprintf (buf, sizeof (buf), X_("capture"));
 291                 break;
 292         }
 293         align_node->add_property (X_("style"), buf);
 294         root.add_child_nocopy (*align_node);
 295
 296         XMLNode* remote_control_node = new XMLNode (X_("remote_control"));
 297         snprintf (buf, sizeof (buf), "%d", _remote_control_id);
 298         remote_control_node->add_property (X_("id"), buf);
 299         root.add_child_nocopy (*remote_control_node);
 300
 301         switch (_mode) {
 302         case Normal:
 303                 root.add_property (X_("mode"), X_("normal"));
 304                 break;
 305         case Destructive:
 306                 root.add_property (X_("mode"), X_("destructive"));
 307                 break;
 308         }
 309
 310         /* we don't return diskstream state because we don't
 311            own the diskstream exclusively. control of the diskstream
 312            state is ceded to the Session, even if we create the
 313            diskstream.
 314         */
 315
 316         _diskstream->id().print (buf);
 317         root.add_property ("diskstream-id", buf);
 318
 319         return root;
 320 }
 321
 322 void
 323 MidiTrack::set_state_part_two ()
 324 {
 325         XMLNode* fnode;
 326         XMLProperty* prop;
 327         LocaleGuard lg (X_("POSIX"));
 328
 329         /* This is called after all session state has been restored but before
 330            have been made ports and connections are established.
 331         */
 332
 333         if (pending_state == 0) {
 334                 return;
 335         }
 336
 337         if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
 338
 339
 340                 _freeze_record.have_mementos = false;
 341                 _freeze_record.state = Frozen;
 342
 343                 for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 344                         delete *i;
 345                 }
 346                 _freeze_record.insert_info.clear ();
 347
 348                 if ((prop = fnode->property (X_("playlist"))) != 0) {
 349                         Playlist* pl = _session.playlist_by_name (prop->value());
 350                         if (pl) {
 351                                 _freeze_record.playlist = dynamic_cast<MidiPlaylist*> (pl);
 352                         } else {
 353                                 _freeze_record.playlist = 0;
 354                                 _freeze_record.state = NoFreeze;
 355                         return;
 356                         }
 357                 }
 358
 359                 if ((prop = fnode->property (X_("state"))) != 0) {
 360                         _freeze_record.state = (FreezeState) atoi (prop->value().c_str());
 361                 }
 362
 363                 XMLNodeConstIterator citer;
 364                 XMLNodeList clist = fnode->children();
 365
 366                 for (citer = clist.begin(); citer != clist.end(); ++citer) {
 367                         if ((*citer)->name() != X_("insert")) {
 368                                 continue;
 369                         }
 370
 371                         if ((prop = (*citer)->property (X_("id"))) == 0) {
 372                                 continue;
 373                         }
 374
 375                         FreezeRecordInsertInfo* frii = new FreezeRecordInsertInfo (*((*citer)->children().front()));
 376                         frii->insert = 0;
 377                         frii->id = prop->value ();
 378                         _freeze_record.insert_info.push_back (frii);
 379                 }
 380         }
 381
 382         /* Alignment: act as a proxy for the diskstream */
 383
 384         if ((fnode = find_named_node (*pending_state, X_("alignment"))) != 0) {
 385
 386                 if ((prop = fnode->property (X_("style"))) != 0) {
 387                         if (prop->value() == "existing") {
 388                                 _diskstream->set_persistent_align_style (ExistingMaterial);
 389                         } else if (prop->value() == "capture") {
 390                                 _diskstream->set_persistent_align_style (CaptureTime);
 391                         }
 392                 }
 393         }
 394         return;
 395 }
 396
 397 uint32_t
 398 MidiTrack::n_process_buffers ()
 399 {
 400         return max ((uint32_t) _diskstream->n_channels(), redirect_max_outs);
 401 }
 402
 403 void
 404 MidiTrack::passthru_silence (jack_nframes_t start_frame, jack_nframes_t end_frame, jack_nframes_t nframes, jack_nframes_t offset, int declick, bool meter)
 405 {
 406         uint32_t nbufs = n_process_buffers ();
 407         process_output_buffers (_session.get_silent_buffers (nbufs), nbufs, start_frame, end_frame, nframes, offset, true, declick, meter);
 408 }
 409
 410 int
 411 MidiTrack::no_roll (jack_nframes_t nframes, jack_nframes_t start_frame, jack_nframes_t end_frame, jack_nframes_t offset,
 412                      bool session_state_changing, bool can_record, bool rec_monitors_input)
 413 {
 414         if (n_outputs() == 0) {
 415                 return 0;
 416         }
 417
 418         if (!_active) {
 419                 silence (nframes, offset);
 420                 return 0;
 421         }
 422
 423         if (session_state_changing) {
 424
 425                 /* XXX is this safe to do against transport state changes? */
 426
 427                 passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 428                 return 0;
 429         }
 430
 431         midi_diskstream().check_record_status (start_frame, nframes, can_record);
 432
 433         bool send_silence;
 434
 435         if (_have_internal_generator) {
 436                 /* since the instrument has no input streams,
 437                    there is no reason to send any signal
 438                    into the route.
 439                 */
 440                 send_silence = true;
 441         } else {
 442
 443                 if (_session.get_auto_input()) {
 444                         if (Config->get_use_sw_monitoring()) {
 445                                 send_silence = false;
 446                         } else {
 447                                 send_silence = true;
 448                         }
 449                 } else {
 450                         if (_diskstream->record_enabled()) {
 451                                 if (Config->get_use_sw_monitoring()) {
 452                                         send_silence = false;
 453                                 } else {
 454                                         send_silence = true;
 455                                 }
 456                         } else {
 457                                 send_silence = true;
 458                         }
 459                 }
 460         }
 461
 462         apply_gain_automation = false;
 463
 464         if (send_silence) {
 465
 466                 /* if we're sending silence, but we want the meters to show levels for the signal,
 467                    meter right here.
 468                 */
 469
 470                 if (_have_internal_generator) {
 471                         passthru_silence (start_frame, end_frame, nframes, offset, 0, true);
 472                 } else {
 473                         if (_meter_point == MeterInput) {
 474                                 just_meter_input (start_frame, end_frame, nframes, offset);
 475                         }
 476                         passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 477                 }
 478
 479         } else {
 480
 481                 /* we're sending signal, but we may still want to meter the input.
 482                  */
 483
 484                 passthru (start_frame, end_frame, nframes, offset, 0, (_meter_point == MeterInput));
 485         }
 486
 487         return 0;
 488 }
 489
 490 int
 491 MidiTrack::roll (jack_nframes_t nframes, jack_nframes_t start_frame, jack_nframes_t end_frame, jack_nframes_t offset, int declick,
 492                   bool can_record, bool rec_monitors_input)
 493 {
 494 #if 0
 495         int dret;
 496         Sample* b;
 497         Sample* tmpb;
 498         jack_nframes_t transport_frame;
 499
 500         {
 501                 Glib::RWLock::ReaderLock lm (redirect_lock, Glib::TRY_LOCK);
 502                 if (lm.locked()) {
 503                         // automation snapshot can also be called from the non-rt context
 504                         // and it uses the redirect list, so we take the lock out here
 505                         automation_snapshot (start_frame);
 506                 }
 507         }
 508
 509         if (n_outputs() == 0 && _redirects.empty()) {
 510                 return 0;
 511         }
 512
 513         if (!_active) {
 514                 silence (nframes, offset);
 515                 return 0;
 516         }
 517
 518         transport_frame = _session.transport_frame();
 519
 520         if ((nframes = check_initial_delay (nframes, offset, transport_frame)) == 0) {
 521                 /* need to do this so that the diskstream sets its
 522                    playback distance to zero, thus causing diskstream::commit
 523                    to do nothing.
 524                 */
 525                 return diskstream->process (transport_frame, 0, 0, can_record, rec_monitors_input);
 526         }
 527
 528         _silent = false;
 529         apply_gain_automation = false;
 530
 531         if ((dret = diskstream->process (transport_frame, nframes, offset, can_record, rec_monitors_input)) != 0) {
 532
 533                 silence (nframes, offset);
 534
 535                 return dret;
 536         }
 537
 538         /* special condition applies */
 539
 540         if (_meter_point == MeterInput) {
 541                 just_meter_input (start_frame, end_frame, nframes, offset);
 542         }
 543
 544         if (diskstream->record_enabled() && !can_record && !_session.get_auto_input()) {
 545
 546                 /* not actually recording, but we want to hear the input material anyway,
 547                    at least potentially (depending on monitoring options)
 548                  */
 549
 550                 passthru (start_frame, end_frame, nframes, offset, 0, true);
 551
 552         } else if ((b = diskstream->playback_buffer(0)) != 0) {
 553
 554                 /*
 555                   XXX is it true that the earlier test on n_outputs()
 556                   means that we can avoid checking it again here? i think
 557                   so, because changing the i/o configuration of an IO
 558                   requires holding the AudioEngine lock, which we hold
 559                   while in the process() tree.
 560                 */
 561
 562
 563                 /* copy the diskstream data to all output buffers */
 564
 565                 vector<Sample*>& bufs = _session.get_passthru_buffers ();
 566                 uint32_t limit = n_process_buffers ();
 567
 568                 uint32_t n;
 569                 uint32_t i;
 570
 571
 572                 for (i = 0, n = 1; i < limit; ++i, ++n) {
 573                         memcpy (bufs[i], b, sizeof (Sample) * nframes);
 574                         if (n < diskstream->n_channels()) {
 575                                 tmpb = diskstream->playback_buffer(n);
 576                                 if (tmpb!=0) {
 577                                         b = tmpb;
 578                                 }
 579                         }
 580                 }
 581
 582                 /* don't waste time with automation if we're recording or we've just stopped (yes it can happen) */
 583
 584                 if (!diskstream->record_enabled() && _session.transport_rolling()) {
 585                         Glib::Mutex::Lock am (automation_lock, Glib::TRY_LOCK);
 586
 587                         if (am.locked() && gain_automation_playback()) {
 588                                 apply_gain_automation = _gain_automation_curve.rt_safe_get_vector (start_frame, end_frame, _session.gain_automation_buffer(), nframes);
 589                         }
 590                 }
 591
 592                 process_output_buffers (bufs, limit, start_frame, end_frame, nframes, offset, (!_session.get_record_enabled() || !_session.get_do_not_record_plugins()), declick, (_meter_point != MeterInput));
 593
 594         } else {
 595                 /* problem with the diskstream; just be quiet for a bit */
 596                 silence (nframes, offset);
 597         }
 598 #endif
 599         return 0;
 600 }
 601
 602 int
 603 MidiTrack::silent_roll (jack_nframes_t nframes, jack_nframes_t start_frame, jack_nframes_t end_frame, jack_nframes_t offset,
 604                          bool can_record, bool rec_monitors_input)
 605 {
 606         if (n_outputs() == 0 && _redirects.empty()) {
 607                 return 0;
 608         }
 609
 610         if (!_active) {
 611                 silence (nframes, offset);
 612                 return 0;
 613         }
 614
 615         _silent = true;
 616         apply_gain_automation = false;
 617
 618         silence (nframes, offset);
 619
 620         return midi_diskstream().process (_session.transport_frame() + offset, nframes, offset, can_record, rec_monitors_input);
 621 }
 622
 623 int
 624 MidiTrack::set_name (string str, void *src)
 625 {
 626         int ret;
 627
 628         if (record_enabled() && _session.actively_recording()) {
 629                 /* this messes things up if done while recording */
 630                 return -1;
 631         }
 632
 633         if (_diskstream->set_name (str, src)) {
 634                 return -1;
 635         }
 636
 637         /* save state so that the statefile fully reflects any filename changes */
 638
 639         if ((ret = IO::set_name (str, src)) == 0) {
 640                 _session.save_state ("");
 641         }
 642         return ret;
 643 }
 644
 645 int
 646 MidiTrack::export_stuff (vector<unsigned char*>& buffers, char * workbuf, uint32_t nbufs, jack_nframes_t start, jack_nframes_t nframes)
 647 {
 648 #if 0
 649         gain_t  gain_automation[nframes];
 650         gain_t  gain_buffer[nframes];
 651         float   mix_buffer[nframes];
 652         RedirectList::iterator i;
 653         bool post_fader_work = false;
 654         gain_t this_gain = _gain;
 655         vector<Sample*>::iterator bi;
 656         Sample * b;
 657
 658         Glib::RWLock::ReaderLock rlock (redirect_lock);
 659
 660         if (diskstream->playlist()->read (buffers[0], mix_buffer, gain_buffer, workbuf, start, nframes) != nframes) {
 661                 return -1;
 662         }
 663
 664         uint32_t n=1;
 665         bi = buffers.begin();
 666         b = buffers[0];
 667         ++bi;
 668         for (; bi != buffers.end(); ++bi, ++n) {
 669                 if (n < diskstream->n_channels()) {
 670                         if (diskstream->playlist()->read ((*bi), mix_buffer, gain_buffer, workbuf, start, nframes, n) != nframes) {
 671                                 return -1;
 672                         }
 673                         b = (*bi);
 674                 }
 675                 else {
 676                         /* duplicate last across remaining buffers */
 677                         memcpy ((*bi), b, sizeof (Sample) * nframes);
 678                 }
 679         }
 680
 681
 682         /* note: only run inserts during export. other layers in the machinery
 683            will already have checked that there are no external port inserts.
 684         */
 685
 686         for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 687                 Insert *insert;
 688
 689                 if ((insert = dynamic_cast<Insert*>(*i)) != 0) {
 690                         switch (insert->placement()) {
 691                         case PreFader:
 692                                 insert->run (buffers, nbufs, nframes, 0);
 693                                 break;
 694                         case PostFader:
 695                                 post_fader_work = true;
 696                                 break;
 697                         }
 698                 }
 699         }
 700
 701         if (_gain_automation_curve.automation_state() == Play) {
 702
 703                 _gain_automation_curve.get_vector (start, start + nframes, gain_automation, nframes);
 704
 705                 for (bi = buffers.begin(); bi != buffers.end(); ++bi) {
 706                         Sample *b = *bi;
 707                         for (jack_nframes_t n = 0; n < nframes; ++n) {
 708                                 b[n] *= gain_automation[n];
 709                         }
 710                 }
 711
 712         } else {
 713
 714                 for (bi = buffers.begin(); bi != buffers.end(); ++bi) {
 715                         Sample *b = *bi;
 716                         for (jack_nframes_t n = 0; n < nframes; ++n) {
 717                                 b[n] *= this_gain;
 718                         }
 719                 }
 720         }
 721
 722         if (post_fader_work) {
 723
 724                 for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 725                         PluginInsert *insert;
 726
 727                         if ((insert = dynamic_cast<PluginInsert*>(*i)) != 0) {
 728                                 switch ((*i)->placement()) {
 729                                 case PreFader:
 730                                         break;
 731                                 case PostFader:
 732                                         insert->run (buffers, nbufs, nframes, 0);
 733                                         break;
 734                                 }
 735                         }
 736                 }
 737         }
 738 #endif
 739         return 0;
 740 }
 741
 742 void
 743 MidiTrack::set_latency_delay (jack_nframes_t longest_session_latency)
 744 {
 745         Route::set_latency_delay (longest_session_latency);
 746         _diskstream->set_roll_delay (_roll_delay);
 747 }
 748
 749 void
 750 MidiTrack::bounce (InterThreadInfo& itt)
 751 {
 752         //vector<MidiSource*> srcs;
 753         //_session.write_one_midi_track (*this, 0, _session.current_end_frame(), false, srcs, itt);
 754 }
 755
 756
 757 void
 758 MidiTrack::bounce_range (jack_nframes_t start, jack_nframes_t end, InterThreadInfo& itt)
 759 {
 760         //vector<MidiSource*> srcs;
 761         //_session.write_one_midi_track (*this, start, end, false, srcs, itt);
 762 }
 763
 764 void
 765 MidiTrack::freeze (InterThreadInfo& itt)
 766 {
 767 #if 0
 768         Insert* insert;
 769         vector<MidiSource*> srcs;
 770         string new_playlist_name;
 771         Playlist* new_playlist;
 772         string dir;
 773         AudioRegion* region;
 774         string region_name;
 775
 776         if ((_freeze_record.playlist = diskstream->playlist()) == 0) {
 777                 return;
 778         }
 779
 780         uint32_t n = 1;
 781
 782         while (n < (UINT_MAX-1)) {
 783
 784                 string candidate;
 785
 786                 candidate = string_compose ("<F%2>%1", _freeze_record.playlist->name(), n);
 787
 788                 if (_session.playlist_by_name (candidate) == 0) {
 789                         new_playlist_name = candidate;
 790                         break;
 791                 }
 792
 793                 ++n;
 794
 795         }
 796
 797         if (n == (UINT_MAX-1)) {
 798           PBD::error << string_compose (X_("There Are too many frozen versions of playlist \"%1\""
 799                             " to create another one"), _freeze_record.playlist->name())
 800                << endmsg;
 801                 return;
 802         }
 803
 804         if (_session.write_one_midi_track (*this, 0, _session.current_end_frame(), true, srcs, itt)) {
 805                 return;
 806         }
 807
 808         _freeze_record.insert_info.clear ();
 809         _freeze_record.have_mementos = true;
 810
 811         {
 812                 Glib::RWLock::ReaderLock lm (redirect_lock);
 813
 814                 for (RedirectList::iterator r = _redirects.begin(); r != _redirects.end(); ++r) {
 815
 816                         if ((insert = dynamic_cast<Insert*>(*r)) != 0) {
 817
 818                                 FreezeRecordInsertInfo* frii  = new FreezeRecordInsertInfo ((*r)->get_state());
 819
 820                                 frii->insert = insert;
 821                                 frii->id = insert->id();
 822                                 frii->memento = (*r)->get_memento();
 823
 824                                 _freeze_record.insert_info.push_back (frii);
 825
 826                                 /* now deactivate the insert */
 827
 828                                 insert->set_active (false, this);
 829                         }
 830                 }
 831         }
 832
 833         new_playlist = new MidiPlaylist (_session, new_playlist_name, false);
 834         region_name = new_playlist_name;
 835
 836         /* create a new region from all filesources, keep it private */
 837
 838         region = new AudioRegion (srcs, 0, srcs[0]->length(),
 839                                   region_name, 0,
 840                                   (AudioRegion::Flag) (AudioRegion::WholeFile|AudioRegion::DefaultFlags),
 841                                   false);
 842
 843         new_playlist->set_orig_diskstream_id (diskstream->id());
 844         new_playlist->add_region (*region, 0);
 845         new_playlist->set_frozen (true);
 846         region->set_locked (true);
 847
 848         diskstream->use_playlist (dynamic_cast<MidiPlaylist*>(new_playlist));
 849         diskstream->set_record_enabled (false, this);
 850
 851         _freeze_record.state = Frozen;
 852         FreezeChange(); /* EMIT SIGNAL */
 853 #endif
 854 }
 855
 856 void
 857 MidiTrack::unfreeze ()
 858 {
 859 #if 0
 860         if (_freeze_record.playlist) {
 861                 diskstream->use_playlist (_freeze_record.playlist);
 862
 863                 if (_freeze_record.have_mementos) {
 864
 865                         for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 866                                 (*i)->memento ();
 867                         }
 868
 869                 } else {
 870
 871                         Glib::RWLock::ReaderLock lm (redirect_lock); // should this be a write lock? jlc
 872                         for (RedirectList::iterator i = _redirects.begin(); i != _redirects.end(); ++i) {
 873                                 for (vector<FreezeRecordInsertInfo*>::iterator ii = _freeze_record.insert_info.begin(); ii != _freeze_record.insert_info.end(); ++ii) {
 874                                         if ((*ii)->id == (*i)->id()) {
 875                                                 (*i)->set_state (((*ii)->state));
 876                                                 break;
 877                                         }
 878                                 }
 879                         }
 880                 }
 881
 882                 _freeze_record.playlist = 0;
 883         }
 884 #endif
 885         _freeze_record.state = UnFrozen;
 886         FreezeChange (); /* EMIT SIGNAL */
 887 }
 888
 889 void
 890 MidiTrack::set_mode (TrackMode m)
 891 {
 892         if (_diskstream) {
 893                 if (_mode != m) {
 894                         _mode = m;
 895                         _diskstream->set_destructive (m == Destructive);
 896                         ModeChanged();
 897                 }
 898         }
 899 }