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