libs/ardour/audio_track.cc

   1 /*
   2     Copyright (C) 2002 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     $Id$
  19 */
  20 #include <pbd/error.h>
  21 #include <sigc++/retype.h>
  22 #include <sigc++/retype_return.h>
  23 #include <sigc++/bind.h>
  24
  25 #include <ardour/audio_track.h>
  26 #include <ardour/audio_diskstream.h>
  27 #include <ardour/session.h>
  28 #include <ardour/redirect.h>
  29 #include <ardour/audioregion.h>
  30 #include <ardour/audiosource.h>
  31 #include <ardour/region_factory.h>
  32 #include <ardour/route_group_specialized.h>
  33 #include <ardour/insert.h>
  34 #include <ardour/audioplaylist.h>
  35 #include <ardour/panner.h>
  36 #include <ardour/utils.h>
  37 #include <ardour/buffer_set.h>
  38 #include "i18n.h"
  39
  40 using namespace std;
  41 using namespace ARDOUR;
  42 using namespace PBD;
  43
  44 AudioTrack::AudioTrack (Session& sess, string name, Route::Flag flag, TrackMode mode)
  45         : Track (sess, name, flag, mode)
  46 {
  47         AudioDiskstream::Flag dflags = AudioDiskstream::Flag (0);
  48
  49         if (_flags & Hidden) {
  50                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Hidden);
  51         } else {
  52                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Recordable);
  53         }
  54
  55         if (mode == Destructive) {
  56                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Destructive);
  57         }
  58
  59         boost::shared_ptr<AudioDiskstream> ds (new AudioDiskstream (_session, name, dflags));
  60         _session.add_diskstream (ds);
  61
  62         set_diskstream (boost::dynamic_pointer_cast<AudioDiskstream> (ds), this);
  63 }
  64
  65 AudioTrack::AudioTrack (Session& sess, const XMLNode& node)
  66         : Track (sess, node)
  67 {
  68         set_state (node);
  69 }
  70
  71 AudioTrack::~AudioTrack ()
  72 {
  73 }
  74
  75 int
  76 AudioTrack::deprecated_use_diskstream_connections ()
  77 {
  78         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
  79
  80         if (diskstream->deprecated_io_node == 0) {
  81                 return 0;
  82         }
  83
  84         const XMLProperty* prop;
  85         XMLNode& node (*diskstream->deprecated_io_node);
  86
  87         /* don't do this more than once. */
  88
  89         diskstream->deprecated_io_node = 0;
  90
  91         set_input_minimum (-1);
  92         set_input_maximum (-1);
  93         set_output_minimum (-1);
  94         set_output_maximum (-1);
  95
  96         if ((prop = node.property ("gain")) != 0) {
  97                 set_gain (atof (prop->value().c_str()), this);
  98                 _gain = _desired_gain;
  99         }
 100
 101         if ((prop = node.property ("input-connection")) != 0) {
 102                 Connection* c = _session.connection_by_name (prop->value());
 103
 104                 if (c == 0) {
 105                         error << string_compose(_("Unknown connection \"%1\" listed for input of %2"), prop->value(), _name) << endmsg;
 106
 107                         if ((c = _session.connection_by_name (_("in 1"))) == 0) {
 108                                 error << _("No input connections available as a replacement")
 109                                 << endmsg;
 110                                 return -1;
 111                         } else {
 112                                 info << string_compose (_("Connection %1 was not available - \"in 1\" used instead"), prop->value())
 113                                << endmsg;
 114                         }
 115                 }
 116
 117                 use_input_connection (*c, this);
 118
 119         } else if ((prop = node.property ("inputs")) != 0) {
 120                 if (set_inputs (prop->value())) {
 121                         error << string_compose(_("improper input channel list in XML node (%1)"), prop->value()) << endmsg;
 122                         return -1;
 123                 }
 124         }
 125
 126         return 0;
 127 }
 128
 129 int
 130 AudioTrack::set_diskstream (boost::shared_ptr<AudioDiskstream> ds, void *src)
 131 {
 132         _diskstream = ds;
 133         _diskstream->set_io (*this);
 134         _diskstream->set_destructive (_mode == Destructive);
 135
 136         if (audio_diskstream()->deprecated_io_node) {
 137
 138                 if (!connecting_legal) {
 139                         ConnectingLegal.connect (mem_fun (*this, &AudioTrack::deprecated_use_diskstream_connections));
 140                 } else {
 141                         deprecated_use_diskstream_connections ();
 142                 }
 143         }
 144
 145         _diskstream->set_record_enabled (false);
 146         _diskstream->monitor_input (false);
 147
 148         ic_connection.disconnect();
 149         ic_connection = input_changed.connect (mem_fun (*_diskstream, &Diskstream::handle_input_change));
 150
 151         DiskstreamChanged (); /* EMIT SIGNAL */
 152
 153         return 0;
 154 }
 155
 156 int
 157 AudioTrack::use_diskstream (string name)
 158 {
 159         boost::shared_ptr<AudioDiskstream> dstream;
 160
 161         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream>(_session.diskstream_by_name (name))) == 0) {
 162                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), name) << endmsg;
 163                 return -1;
 164         }
 165
 166         return set_diskstream (dstream, this);
 167 }
 168
 169 int
 170 AudioTrack::use_diskstream (const PBD::ID& id)
 171 {
 172         boost::shared_ptr<AudioDiskstream> dstream;
 173
 174         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream> (_session.diskstream_by_id (id))) == 0) {
 175                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), id) << endmsg;
 176                 return -1;
 177         }
 178
 179         return set_diskstream (dstream, this);
 180 }
 181
 182 boost::shared_ptr<AudioDiskstream>
 183 AudioTrack::audio_diskstream() const
 184 {
 185         return boost::dynamic_pointer_cast<AudioDiskstream>(_diskstream);
 186 }
 187
 188 int
 189 AudioTrack::set_state (const XMLNode& node)
 190 {
 191         const XMLProperty *prop;
 192         XMLNodeConstIterator iter;
 193
 194         if (Route::set_state (node)) {
 195                 return -1;
 196         }
 197
 198         if ((prop = node.property (X_("mode"))) != 0) {
 199                 if (prop->value() == X_("normal")) {
 200                         _mode = Normal;
 201                 } else if (prop->value() == X_("destructive")) {
 202                         _mode = Destructive;
 203                 } else {
 204                         warning << string_compose ("unknown audio track mode \"%1\" seen and ignored", prop->value()) << endmsg;
 205                         _mode = Normal;
 206                 }
 207         } else {
 208                 _mode = Normal;
 209         }
 210
 211         if ((prop = node.property ("diskstream-id")) == 0) {
 212
 213                 /* some old sessions use the diskstream name rather than the ID */
 214
 215                 if ((prop = node.property ("diskstream")) == 0) {
 216                         fatal << _("programming error: AudioTrack given state without diskstream!") << endmsg;
 217                         /*NOTREACHED*/
 218                         return -1;
 219                 }
 220
 221                 if (use_diskstream (prop->value())) {
 222                         return -1;
 223                 }
 224
 225         } else {
 226
 227                 PBD::ID id (prop->value());
 228
 229                 if (use_diskstream (id)) {
 230                         return -1;
 231                 }
 232         }
 233
 234
 235         XMLNodeList nlist;
 236         XMLNodeConstIterator niter;
 237         XMLNode *child;
 238
 239         nlist = node.children();
 240         for (niter = nlist.begin(); niter != nlist.end(); ++niter){
 241                 child = *niter;
 242
 243                 if (child->name() == X_("remote_control")) {
 244                         if ((prop = child->property (X_("id"))) != 0) {
 245                                 int32_t x;
 246                                 sscanf (prop->value().c_str(), "%d", &x);
 247                                 set_remote_control_id (x);
 248                         }
 249
 250                 } else if (child->name() == X_("recenable")) {
 251                         _rec_enable_control.set_state (*child);
 252                         _session.add_controllable (&_rec_enable_control);
 253                 }
 254         }
 255
 256         pending_state = const_cast<XMLNode*> (&node);
 257
 258         _session.StateReady.connect (mem_fun (*this, &AudioTrack::set_state_part_two));
 259
 260         return 0;
 261 }
 262
 263 XMLNode&
 264 AudioTrack::state(bool full_state)
 265 {
 266         XMLNode& root (Route::state(full_state));
 267         XMLNode* freeze_node;
 268         char buf[64];
 269
 270         if (_freeze_record.playlist) {
 271                 XMLNode* inode;
 272
 273                 freeze_node = new XMLNode (X_("freeze-info"));
 274                 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
 275                 snprintf (buf, sizeof (buf), "%d", (int) _freeze_record.state);
 276                 freeze_node->add_property ("state", buf);
 277
 278                 for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 279                         inode = new XMLNode (X_("insert"));
 280                         (*i)->id.print (buf, sizeof (buf));
 281                         inode->add_property (X_("id"), buf);
 282                         inode->add_child_copy ((*i)->state);
 283
 284                         freeze_node->add_child_nocopy (*inode);
 285                 }
 286
 287                 root.add_child_nocopy (*freeze_node);
 288         }
 289
 290         /* Alignment: act as a proxy for the diskstream */
 291
 292         XMLNode* align_node = new XMLNode (X_("alignment"));
 293         switch (_diskstream->alignment_style()) {
 294         case ExistingMaterial:
 295                 snprintf (buf, sizeof (buf), X_("existing"));
 296                 break;
 297         case CaptureTime:
 298                 snprintf (buf, sizeof (buf), X_("capture"));
 299                 break;
 300         }
 301         align_node->add_property (X_("style"), buf);
 302         root.add_child_nocopy (*align_node);
 303
 304         XMLNode* remote_control_node = new XMLNode (X_("remote_control"));
 305         snprintf (buf, sizeof (buf), "%d", _remote_control_id);
 306         remote_control_node->add_property (X_("id"), buf);
 307         root.add_child_nocopy (*remote_control_node);
 308
 309         switch (_mode) {
 310         case Normal:
 311                 root.add_property (X_("mode"), X_("normal"));
 312                 break;
 313         case Destructive:
 314                 root.add_property (X_("mode"), X_("destructive"));
 315                 break;
 316         }
 317
 318         /* we don't return diskstream state because we don't
 319            own the diskstream exclusively. control of the diskstream
 320            state is ceded to the Session, even if we create the
 321            diskstream.
 322         */
 323
 324         _diskstream->id().print (buf, sizeof (buf));
 325         root.add_property ("diskstream-id", buf);
 326
 327         root.add_child_nocopy (_rec_enable_control.get_state());
 328
 329         return root;
 330 }
 331
 332 void
 333 AudioTrack::set_state_part_two ()
 334 {
 335         XMLNode* fnode;
 336         XMLProperty* prop;
 337         LocaleGuard lg (X_("POSIX"));
 338
 339         /* This is called after all session state has been restored but before
 340            have been made ports and connections are established.
 341         */
 342
 343         if (pending_state == 0) {
 344                 return;
 345         }
 346
 347         if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
 348
 349
 350                 _freeze_record.have_mementos = false;
 351                 _freeze_record.state = Frozen;
 352
 353                 for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 354                         delete *i;
 355                 }
 356                 _freeze_record.insert_info.clear ();
 357
 358                 if ((prop = fnode->property (X_("playlist"))) != 0) {
 359                         Playlist* pl = _session.playlist_by_name (prop->value());
 360                         if (pl) {
 361                                 _freeze_record.playlist = dynamic_cast<AudioPlaylist*> (pl);
 362                         } else {
 363                                 _freeze_record.playlist = 0;
 364                                 _freeze_record.state = NoFreeze;
 365                         return;
 366                         }
 367                 }
 368
 369                 if ((prop = fnode->property (X_("state"))) != 0) {
 370                         _freeze_record.state = (FreezeState) atoi (prop->value().c_str());
 371                 }
 372
 373                 XMLNodeConstIterator citer;
 374                 XMLNodeList clist = fnode->children();
 375
 376                 for (citer = clist.begin(); citer != clist.end(); ++citer) {
 377                         if ((*citer)->name() != X_("insert")) {
 378                                 continue;
 379                         }
 380
 381                         if ((prop = (*citer)->property (X_("id"))) == 0) {
 382                                 continue;
 383                         }
 384
 385                         FreezeRecordInsertInfo* frii = new FreezeRecordInsertInfo (*((*citer)->children().front()),
 386                                                                                    boost::shared_ptr<Insert>());
 387                         frii->id = prop->value ();
 388                         _freeze_record.insert_info.push_back (frii);
 389                 }
 390         }
 391
 392         /* Alignment: act as a proxy for the diskstream */
 393
 394         if ((fnode = find_named_node (*pending_state, X_("alignment"))) != 0) {
 395
 396                 if ((prop = fnode->property (X_("style"))) != 0) {
 397                         if (prop->value() == "existing") {
 398                                 _diskstream->set_persistent_align_style (ExistingMaterial);
 399                         } else if (prop->value() == "capture") {
 400                                 _diskstream->set_persistent_align_style (CaptureTime);
 401                         }
 402                 }
 403         }
 404         return;
 405 }
 406
 407 int
 408 AudioTrack::no_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
 409                      bool session_state_changing, bool can_record, bool rec_monitors_input)
 410 {
 411         if (n_outputs().get_total() == 0) {
 412                 return 0;
 413         }
 414
 415         if (!_active) {
 416                 silence (nframes, offset);
 417                 return 0;
 418         }
 419
 420         if (session_state_changing) {
 421
 422                 /* XXX is this safe to do against transport state changes? */
 423
 424                 passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 425                 return 0;
 426         }
 427
 428         audio_diskstream()->check_record_status (start_frame, nframes, can_record);
 429
 430         bool send_silence;
 431
 432         if (_have_internal_generator) {
 433                 /* since the instrument has no input streams,
 434                    there is no reason to send any signal
 435                    into the route.
 436                 */
 437                 send_silence = true;
 438         } else {
 439
 440                 if (Config->get_auto_input()) {
 441                         if (Config->get_monitoring_model() == SoftwareMonitoring) {
 442                                 send_silence = false;
 443                         } else {
 444                                 send_silence = true;
 445                         }
 446                 } else {
 447                         if (_diskstream->record_enabled()) {
 448                                 if (Config->get_monitoring_model() == SoftwareMonitoring) {
 449                                         send_silence = false;
 450                                 } else {
 451                                         send_silence = true;
 452                                 }
 453                         } else {
 454                                 send_silence = true;
 455                         }
 456                 }
 457         }
 458
 459         apply_gain_automation = false;
 460
 461         if (send_silence) {
 462
 463                 /* if we're sending silence, but we want the meters to show levels for the signal,
 464                    meter right here.
 465                 */
 466
 467                 if (_have_internal_generator) {
 468                         passthru_silence (start_frame, end_frame, nframes, offset, 0, true);
 469                 } else {
 470                         if (_meter_point == MeterInput) {
 471                                 just_meter_input (start_frame, end_frame, nframes, offset);
 472                         }
 473                         passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 474                 }
 475
 476         } else {
 477
 478                 /* we're sending signal, but we may still want to meter the input.
 479                  */
 480
 481                 passthru (start_frame, end_frame, nframes, offset, 0, (_meter_point == MeterInput));
 482         }
 483
 484         return 0;
 485 }
 486
 487 int
 488 AudioTrack::roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset, int declick,
 489                   bool can_record, bool rec_monitors_input)
 490 {
 491         int dret;
 492         Sample* b;
 493         Sample* tmpb;
 494         nframes_t transport_frame;
 495         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 496
 497         if (n_outputs().get_total() == 0 && _redirects.empty()) {
 498                 return 0;
 499         }
 500
 501         if (!_active) {
 502                 silence (nframes, offset);
 503                 return 0;
 504         }
 505
 506         transport_frame = _session.transport_frame();
 507
 508         if ((nframes = check_initial_delay (nframes, offset, transport_frame)) == 0) {
 509                 /* need to do this so that the diskstream sets its
 510                    playback distance to zero, thus causing diskstream::commit
 511                    to do nothing.
 512                 */
 513                 return diskstream->process (transport_frame, 0, 0, can_record, rec_monitors_input);
 514         }
 515
 516         _silent = false;
 517         apply_gain_automation = false;
 518
 519         if ((dret = diskstream->process (transport_frame, nframes, offset, can_record, rec_monitors_input)) != 0) {
 520
 521                 silence (nframes, offset);
 522
 523                 return dret;
 524         }
 525
 526         /* special condition applies */
 527
 528         if (_meter_point == MeterInput) {
 529                 just_meter_input (start_frame, end_frame, nframes, offset);
 530         }
 531
 532         if (diskstream->record_enabled() && !can_record && !Config->get_auto_input()) {
 533
 534                 /* not actually recording, but we want to hear the input material anyway,
 535                    at least potentially (depending on monitoring options)
 536                  */
 537
 538                 passthru (start_frame, end_frame, nframes, offset, 0, true);
 539
 540         } else if ((b = diskstream->playback_buffer(0)) != 0) {
 541
 542                 /*
 543                   XXX is it true that the earlier test on n_outputs()
 544                   means that we can avoid checking it again here? i think
 545                   so, because changing the i/o configuration of an IO
 546                   requires holding the AudioEngine lock, which we hold
 547                   while in the process() tree.
 548                 */
 549
 550
 551                 /* copy the diskstream data to all output buffers */
 552
 553                 const size_t limit = n_process_buffers().get(DataType::AUDIO);
 554                 BufferSet& bufs = _session.get_scratch_buffers (n_process_buffers());
 555
 556                 uint32_t n;
 557                 uint32_t i;
 558
 559                 for (i = 0, n = 1; i < limit; ++i, ++n) {
 560                         memcpy (bufs.get_audio(i).data(nframes), b, sizeof (Sample) * nframes);
 561                         if (n < diskstream->n_channels().get(DataType::AUDIO)) {
 562                                 tmpb = diskstream->playback_buffer(n);
 563                                 if (tmpb!=0) {
 564                                         b = tmpb;
 565                                 }
 566                         }
 567                 }
 568
 569                 /* don't waste time with automation if we're recording or we've just stopped (yes it can happen) */
 570
 571                 if (!diskstream->record_enabled() && _session.transport_rolling()) {
 572                         Glib::Mutex::Lock am (automation_lock, Glib::TRY_LOCK);
 573
 574                         if (am.locked() && gain_automation_playback()) {
 575                                 apply_gain_automation = _gain_automation_curve.rt_safe_get_vector (start_frame, end_frame, _session.gain_automation_buffer(), nframes);
 576                         }
 577                 }
 578
 579                 process_output_buffers (bufs, start_frame, end_frame, nframes, offset, (!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick, (_meter_point != MeterInput));
 580
 581         } else {
 582                 /* problem with the diskstream; just be quiet for a bit */
 583                 silence (nframes, offset);
 584         }
 585
 586         return 0;
 587 }
 588
 589 int
 590 AudioTrack::silent_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
 591                          bool can_record, bool rec_monitors_input)
 592 {
 593         if (n_outputs().get_total() == 0 && _redirects.empty()) {
 594                 return 0;
 595         }
 596
 597         if (!_active) {
 598                 silence (nframes, offset);
 599                 return 0;
 600         }
 601
 602         _silent = true;
 603         apply_gain_automation = false;
 604
 605         silence (nframes, offset);
 606
 607         return audio_diskstream()->process (_session.transport_frame() + offset, nframes, offset, can_record, rec_monitors_input);
 608 }
 609
 610 int
 611 AudioTrack::export_stuff (BufferSet& buffers, nframes_t start, nframes_t nframes)
 612 {
 613         gain_t  gain_automation[nframes];
 614         gain_t  gain_buffer[nframes];
 615         float   mix_buffer[nframes];
 616         RedirectList::iterator i;
 617         bool post_fader_work = false;
 618         gain_t this_gain = _gain;
 619         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 620
 621         Glib::RWLock::ReaderLock rlock (redirect_lock);
 622
 623         // FIXME
 624         AudioPlaylist* const apl = dynamic_cast<AudioPlaylist*>(diskstream->playlist());
 625         assert(apl);
 626
 627         if (apl->read (buffers.get_audio(nframes).data(nframes),
 628                         mix_buffer, gain_buffer, start, nframes) != nframes) {
 629                 return -1;
 630         }
 631
 632         assert(buffers.count().get(DataType::AUDIO) >= 1);
 633         uint32_t n=1;
 634         Sample* b = buffers.get_audio(0).data(nframes);
 635         BufferSet::audio_iterator bi = buffers.audio_begin();
 636         ++bi;
 637         for ( ; bi != buffers.audio_end(); ++bi, ++n) {
 638                 if (n < diskstream->n_channels().get(DataType::AUDIO)) {
 639                         if (apl->read (bi->data(nframes), mix_buffer, gain_buffer, start, nframes, n) != nframes) {
 640                                 return -1;
 641                         }
 642                         b = bi->data(nframes);
 643                 }
 644                 else {
 645                         /* duplicate last across remaining buffers */
 646                         memcpy (bi->data(nframes), b, sizeof (Sample) * nframes);
 647                 }
 648         }
 649
 650
 651         /* note: only run inserts during export. other layers in the machinery
 652            will already have checked that there are no external port inserts.
 653         */
 654
 655         for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 656                 boost::shared_ptr<Insert> insert;
 657
 658                 if ((insert = boost::dynamic_pointer_cast<Insert>(*i)) != 0) {
 659                         switch (insert->placement()) {
 660                         case PreFader:
 661                                 insert->run (buffers, start, start+nframes, nframes, 0);
 662                                 break;
 663                         case PostFader:
 664                                 post_fader_work = true;
 665                                 break;
 666                         }
 667                 }
 668         }
 669
 670         if (_gain_automation_curve.automation_state() == Play) {
 671
 672                 _gain_automation_curve.get_vector (start, start + nframes, gain_automation, nframes);
 673
 674                 for (BufferSet::audio_iterator bi = buffers.audio_begin(); bi != buffers.audio_end(); ++bi) {
 675                         Sample *b = bi->data(nframes);
 676                         for (nframes_t n = 0; n < nframes; ++n) {
 677                                 b[n] *= gain_automation[n];
 678                         }
 679                 }
 680
 681         } else {
 682
 683                 for (BufferSet::audio_iterator bi = buffers.audio_begin(); bi != buffers.audio_end(); ++bi) {
 684                         Sample *b = bi->data(nframes);
 685                         for (nframes_t n = 0; n < nframes; ++n) {
 686                                 b[n] *= this_gain;
 687                         }
 688                 }
 689         }
 690
 691         if (post_fader_work) {
 692
 693                 for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 694                         boost::shared_ptr<PluginInsert> insert;
 695
 696                         if ((insert = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
 697                                 switch ((*i)->placement()) {
 698                                 case PreFader:
 699                                         break;
 700                                 case PostFader:
 701                                         insert->run (buffers, start, start+nframes, nframes, 0);
 702                                         break;
 703                                 }
 704                         }
 705                 }
 706         }
 707
 708         return 0;
 709 }
 710
 711 void
 712 AudioTrack::bounce (InterThreadInfo& itt)
 713 {
 714         vector<boost::shared_ptr<Source> > srcs;
 715         _session.write_one_audio_track (*this, 0, _session.current_end_frame(), false, srcs, itt);
 716 }
 717
 718
 719 void
 720 AudioTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt)
 721 {
 722         vector<boost::shared_ptr<Source> > srcs;
 723         _session.write_one_audio_track (*this, start, end, false, srcs, itt);
 724 }
 725
 726 void
 727 AudioTrack::freeze (InterThreadInfo& itt)
 728 {
 729         vector<boost::shared_ptr<Source> > srcs;
 730         string new_playlist_name;
 731         Playlist* new_playlist;
 732         string dir;
 733         string region_name;
 734         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 735
 736         if ((_freeze_record.playlist = dynamic_cast<AudioPlaylist*>(diskstream->playlist())) == 0) {
 737                 return;
 738         }
 739
 740         uint32_t n = 1;
 741
 742         while (n < (UINT_MAX-1)) {
 743
 744                 string candidate;
 745
 746                 candidate = string_compose ("<F%2>%1", _freeze_record.playlist->name(), n);
 747
 748                 if (_session.playlist_by_name (candidate) == 0) {
 749                         new_playlist_name = candidate;
 750                         break;
 751                 }
 752
 753                 ++n;
 754
 755         }
 756
 757         if (n == (UINT_MAX-1)) {
 758           error << string_compose (X_("There are too many frozen versions of playlist \"%1\""
 759                             " to create another one"), _freeze_record.playlist->name())
 760                << endmsg;
 761                 return;
 762         }
 763
 764         if (_session.write_one_audio_track (*this, 0, _session.current_end_frame(), true, srcs, itt)) {
 765                 return;
 766         }
 767
 768         _freeze_record.insert_info.clear ();
 769         _freeze_record.have_mementos = true;
 770
 771         {
 772                 Glib::RWLock::ReaderLock lm (redirect_lock);
 773
 774                 for (RedirectList::iterator r = _redirects.begin(); r != _redirects.end(); ++r) {
 775
 776                         boost::shared_ptr<Insert> insert;
 777
 778                         if ((insert = boost::dynamic_pointer_cast<Insert>(*r)) != 0) {
 779
 780                                 FreezeRecordInsertInfo* frii  = new FreezeRecordInsertInfo ((*r)->get_state(), insert);
 781
 782                                 frii->id = insert->id();
 783                                 frii->memento = (*r)->get_memento();
 784
 785                                 _freeze_record.insert_info.push_back (frii);
 786
 787                                 /* now deactivate the insert */
 788
 789                                 insert->set_active (false, this);
 790                         }
 791                 }
 792         }
 793
 794         new_playlist = new AudioPlaylist (_session, new_playlist_name, false);
 795         region_name = new_playlist_name;
 796
 797         /* create a new region from all filesources, keep it private */
 798
 799         boost::shared_ptr<Region> region (RegionFactory::create (srcs, 0, srcs[0]->length(),
 800                                                                  region_name, 0,
 801                                                                  (Region::Flag) (Region::WholeFile|Region::DefaultFlags),
 802                                                                  false));
 803
 804         new_playlist->set_orig_diskstream_id (diskstream->id());
 805         new_playlist->add_region (region, 0);
 806         new_playlist->set_frozen (true);
 807         region->set_locked (true);
 808
 809         diskstream->use_playlist (dynamic_cast<AudioPlaylist*>(new_playlist));
 810         diskstream->set_record_enabled (false);
 811
 812         _freeze_record.state = Frozen;
 813         FreezeChange(); /* EMIT SIGNAL */
 814 }
 815
 816 void
 817 AudioTrack::unfreeze ()
 818 {
 819         if (_freeze_record.playlist) {
 820                 audio_diskstream()->use_playlist (_freeze_record.playlist);
 821
 822                 if (_freeze_record.have_mementos) {
 823
 824                         for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 825                                 (*i)->memento ();
 826                         }
 827
 828                 } else {
 829
 830                         Glib::RWLock::ReaderLock lm (redirect_lock); // should this be a write lock? jlc
 831                         for (RedirectList::iterator i = _redirects.begin(); i != _redirects.end(); ++i) {
 832                                 for (vector<FreezeRecordInsertInfo*>::iterator ii = _freeze_record.insert_info.begin(); ii != _freeze_record.insert_info.end(); ++ii) {
 833                                         if ((*ii)->id == (*i)->id()) {
 834                                                 (*i)->set_state (((*ii)->state));
 835                                                 break;
 836                                         }
 837                                 }
 838                         }
 839                 }
 840
 841                 _freeze_record.playlist = 0;
 842         }
 843
 844         _freeze_record.state = UnFrozen;
 845         FreezeChange (); /* EMIT SIGNAL */
 846 }
 847