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);
  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 uint32_t
 408 AudioTrack::n_process_buffers ()
 409 {
 410         return max ((uint32_t) _diskstream->n_channels(), redirect_max_outs);
 411 }
 412
 413 void
 414 AudioTrack::passthru_silence (nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset, int declick, bool meter)
 415 {
 416         uint32_t nbufs = n_process_buffers ();
 417         process_output_buffers (_session.get_silent_buffers (nbufs), nbufs, start_frame, end_frame, nframes, offset, true, declick, meter);
 418 }
 419
 420 int
 421 AudioTrack::no_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
 422                      bool session_state_changing, bool can_record, bool rec_monitors_input)
 423 {
 424         if (n_outputs() == 0) {
 425                 return 0;
 426         }
 427
 428         if (!_active) {
 429                 silence (nframes, offset);
 430                 return 0;
 431         }
 432
 433         if (session_state_changing) {
 434
 435                 /* XXX is this safe to do against transport state changes? */
 436
 437                 passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 438                 return 0;
 439         }
 440
 441         audio_diskstream()->check_record_status (start_frame, nframes, can_record);
 442
 443         bool send_silence;
 444
 445         if (_have_internal_generator) {
 446                 /* since the instrument has no input streams,
 447                    there is no reason to send any signal
 448                    into the route.
 449                 */
 450                 send_silence = true;
 451         } else {
 452
 453                 if (Config->get_auto_input()) {
 454                         if (Config->get_monitoring_model() == SoftwareMonitoring) {
 455                                 send_silence = false;
 456                         } else {
 457                                 send_silence = true;
 458                         }
 459                 } else {
 460                         if (_diskstream->record_enabled()) {
 461                                 if (Config->get_monitoring_model() == SoftwareMonitoring) {
 462                                         send_silence = false;
 463                                 } else {
 464                                         send_silence = true;
 465                                 }
 466                         } else {
 467                                 send_silence = true;
 468                         }
 469                 }
 470         }
 471
 472         apply_gain_automation = false;
 473
 474         if (send_silence) {
 475
 476                 /* if we're sending silence, but we want the meters to show levels for the signal,
 477                    meter right here.
 478                 */
 479
 480                 if (_have_internal_generator) {
 481                         passthru_silence (start_frame, end_frame, nframes, offset, 0, true);
 482                 } else {
 483                         if (_meter_point == MeterInput) {
 484                                 just_meter_input (start_frame, end_frame, nframes, offset);
 485                         }
 486                         passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
 487                 }
 488
 489         } else {
 490
 491                 /* we're sending signal, but we may still want to meter the input.
 492                  */
 493
 494                 passthru (start_frame, end_frame, nframes, offset, 0, (_meter_point == MeterInput));
 495         }
 496
 497         return 0;
 498 }
 499
 500 int
 501 AudioTrack::roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset, int declick,
 502                   bool can_record, bool rec_monitors_input)
 503 {
 504         int dret;
 505         Sample* b;
 506         Sample* tmpb;
 507         nframes_t transport_frame;
 508         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 509
 510         if (n_outputs() == 0 && _redirects.empty()) {
 511                 return 0;
 512         }
 513
 514         if (!_active) {
 515                 silence (nframes, offset);
 516                 return 0;
 517         }
 518
 519         transport_frame = _session.transport_frame();
 520
 521         if ((nframes = check_initial_delay (nframes, offset, transport_frame)) == 0) {
 522                 /* need to do this so that the diskstream sets its
 523                    playback distance to zero, thus causing diskstream::commit
 524                    to do nothing.
 525                 */
 526                 return diskstream->process (transport_frame, 0, 0, can_record, rec_monitors_input);
 527         }
 528
 529         _silent = false;
 530         apply_gain_automation = false;
 531
 532         if ((dret = diskstream->process (transport_frame, nframes, offset, can_record, rec_monitors_input)) != 0) {
 533
 534                 silence (nframes, offset);
 535
 536                 return dret;
 537         }
 538
 539         /* special condition applies */
 540
 541         if (_meter_point == MeterInput) {
 542                 just_meter_input (start_frame, end_frame, nframes, offset);
 543         }
 544
 545         if (diskstream->record_enabled() && !can_record && !Config->get_auto_input()) {
 546
 547                 /* not actually recording, but we want to hear the input material anyway,
 548                    at least potentially (depending on monitoring options)
 549                  */
 550
 551                 passthru (start_frame, end_frame, nframes, offset, 0, true);
 552
 553         } else if ((b = diskstream->playback_buffer(0)) != 0) {
 554
 555                 /*
 556                   XXX is it true that the earlier test on n_outputs()
 557                   means that we can avoid checking it again here? i think
 558                   so, because changing the i/o configuration of an IO
 559                   requires holding the AudioEngine lock, which we hold
 560                   while in the process() tree.
 561                 */
 562
 563
 564                 /* copy the diskstream data to all output buffers */
 565
 566                 vector<Sample*>& bufs = _session.get_passthru_buffers ();
 567                 uint32_t limit = n_process_buffers ();
 568
 569                 uint32_t n;
 570                 uint32_t i;
 571
 572
 573                 for (i = 0, n = 1; i < limit; ++i, ++n) {
 574                         memcpy (bufs[i], b, sizeof (Sample) * nframes);
 575                         if (n < diskstream->n_channels()) {
 576                                 tmpb = diskstream->playback_buffer(n);
 577                                 if (tmpb!=0) {
 578                                         b = tmpb;
 579                                 }
 580                         }
 581                 }
 582
 583                 /* don't waste time with automation if we're recording or we've just stopped (yes it can happen) */
 584
 585                 if (!diskstream->record_enabled() && _session.transport_rolling()) {
 586                         Glib::Mutex::Lock am (automation_lock, Glib::TRY_LOCK);
 587
 588                         if (am.locked() && gain_automation_playback()) {
 589                                 apply_gain_automation = _gain_automation_curve.rt_safe_get_vector (start_frame, end_frame, _session.gain_automation_buffer(), nframes);
 590                         }
 591                 }
 592
 593                 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));
 594
 595         } else {
 596                 /* problem with the diskstream; just be quiet for a bit */
 597                 silence (nframes, offset);
 598         }
 599
 600         return 0;
 601 }
 602
 603 int
 604 AudioTrack::silent_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
 605                          bool can_record, bool rec_monitors_input)
 606 {
 607         if (n_outputs() == 0 && _redirects.empty()) {
 608                 return 0;
 609         }
 610
 611         if (!_active) {
 612                 silence (nframes, offset);
 613                 return 0;
 614         }
 615
 616         _silent = true;
 617         apply_gain_automation = false;
 618
 619         silence (nframes, offset);
 620
 621         return audio_diskstream()->process (_session.transport_frame() + offset, nframes, offset, can_record, rec_monitors_input);
 622 }
 623
 624 int
 625 AudioTrack::export_stuff (vector<Sample*>& buffers, uint32_t nbufs, nframes_t start, nframes_t nframes)
 626 {
 627         gain_t  gain_automation[nframes];
 628         gain_t  gain_buffer[nframes];
 629         float   mix_buffer[nframes];
 630         RedirectList::iterator i;
 631         bool post_fader_work = false;
 632         gain_t this_gain = _gain;
 633         vector<Sample*>::iterator bi;
 634         Sample * b;
 635         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 636
 637         Glib::RWLock::ReaderLock rlock (redirect_lock);
 638
 639         // FIXME
 640         AudioPlaylist* const apl = dynamic_cast<AudioPlaylist*>(diskstream->playlist());
 641         assert(apl);
 642
 643         if (apl->read (buffers[0], mix_buffer, gain_buffer, start, nframes) != nframes) {
 644                 return -1;
 645         }
 646
 647         uint32_t n=1;
 648         bi = buffers.begin();
 649         b = buffers[0];
 650         ++bi;
 651         for (; bi != buffers.end(); ++bi, ++n) {
 652                 if (n < diskstream->n_channels()) {
 653                         if (apl->read ((*bi), mix_buffer, gain_buffer, start, nframes, n) != nframes) {
 654                                 return -1;
 655                         }
 656                         b = (*bi);
 657                 }
 658                 else {
 659                         /* duplicate last across remaining buffers */
 660                         memcpy ((*bi), b, sizeof (Sample) * nframes);
 661                 }
 662         }
 663
 664
 665         /* note: only run inserts during export. other layers in the machinery
 666            will already have checked that there are no external port inserts.
 667         */
 668
 669         for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 670                 boost::shared_ptr<Insert> insert;
 671
 672                 if ((insert = boost::dynamic_pointer_cast<Insert>(*i)) != 0) {
 673                         switch (insert->placement()) {
 674                         case PreFader:
 675                                 insert->run (buffers, nbufs, nframes, 0);
 676                                 break;
 677                         case PostFader:
 678                                 post_fader_work = true;
 679                                 break;
 680                         }
 681                 }
 682         }
 683
 684         if (_gain_automation_curve.automation_state() == Play) {
 685
 686                 _gain_automation_curve.get_vector (start, start + nframes, gain_automation, nframes);
 687
 688                 for (bi = buffers.begin(); bi != buffers.end(); ++bi) {
 689                         Sample *b = *bi;
 690                         for (nframes_t n = 0; n < nframes; ++n) {
 691                                 b[n] *= gain_automation[n];
 692                         }
 693                 }
 694
 695         } else {
 696
 697                 for (bi = buffers.begin(); bi != buffers.end(); ++bi) {
 698                         Sample *b = *bi;
 699                         for (nframes_t n = 0; n < nframes; ++n) {
 700                                 b[n] *= this_gain;
 701                         }
 702                 }
 703         }
 704
 705         if (post_fader_work) {
 706
 707                 for (i = _redirects.begin(); i != _redirects.end(); ++i) {
 708                         boost::shared_ptr<PluginInsert> insert;
 709
 710                         if ((insert = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
 711                                 switch ((*i)->placement()) {
 712                                 case PreFader:
 713                                         break;
 714                                 case PostFader:
 715                                         insert->run (buffers, nbufs, nframes, 0);
 716                                         break;
 717                                 }
 718                         }
 719                 }
 720         }
 721
 722         return 0;
 723 }
 724
 725 void
 726 AudioTrack::bounce (InterThreadInfo& itt)
 727 {
 728         vector<boost::shared_ptr<AudioSource> > srcs;
 729         _session.write_one_audio_track (*this, 0, _session.current_end_frame(), false, srcs, itt);
 730 }
 731
 732
 733 void
 734 AudioTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt)
 735 {
 736         vector<boost::shared_ptr<AudioSource> > srcs;
 737         _session.write_one_audio_track (*this, start, end, false, srcs, itt);
 738 }
 739
 740 void
 741 AudioTrack::freeze (InterThreadInfo& itt)
 742 {
 743         vector<boost::shared_ptr<AudioSource> > srcs;
 744         string new_playlist_name;
 745         Playlist* new_playlist;
 746         string dir;
 747         string region_name;
 748         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 749
 750         if ((_freeze_record.playlist = dynamic_cast<AudioPlaylist*>(diskstream->playlist())) == 0) {
 751                 return;
 752         }
 753
 754         uint32_t n = 1;
 755
 756         while (n < (UINT_MAX-1)) {
 757
 758                 string candidate;
 759
 760                 candidate = string_compose ("<F%2>%1", _freeze_record.playlist->name(), n);
 761
 762                 if (_session.playlist_by_name (candidate) == 0) {
 763                         new_playlist_name = candidate;
 764                         break;
 765                 }
 766
 767                 ++n;
 768
 769         }
 770
 771         if (n == (UINT_MAX-1)) {
 772           error << string_compose (X_("There are too many frozen versions of playlist \"%1\""
 773                             " to create another one"), _freeze_record.playlist->name())
 774                << endmsg;
 775                 return;
 776         }
 777
 778         if (_session.write_one_audio_track (*this, 0, _session.current_end_frame(), true, srcs, itt)) {
 779                 return;
 780         }
 781
 782         _freeze_record.insert_info.clear ();
 783         _freeze_record.have_mementos = true;
 784
 785         {
 786                 Glib::RWLock::ReaderLock lm (redirect_lock);
 787
 788                 for (RedirectList::iterator r = _redirects.begin(); r != _redirects.end(); ++r) {
 789
 790                         boost::shared_ptr<Insert> insert;
 791
 792                         if ((insert = boost::dynamic_pointer_cast<Insert>(*r)) != 0) {
 793
 794                                 FreezeRecordInsertInfo* frii  = new FreezeRecordInsertInfo ((*r)->get_state(), insert);
 795
 796                                 frii->id = insert->id();
 797 #ifdef STATE_MANAGER
 798                                 frii->memento = (*r)->get_memento();
 799 #endif
 800                                 _freeze_record.insert_info.push_back (frii);
 801
 802                                 /* now deactivate the insert */
 803
 804                                 insert->set_active (false, this);
 805                         }
 806                 }
 807         }
 808
 809         new_playlist = new AudioPlaylist (_session, new_playlist_name, false);
 810         region_name = new_playlist_name;
 811
 812         /* create a new region from all filesources, keep it private */
 813
 814         boost::shared_ptr<Region> region (RegionFactory::create (srcs, 0, srcs[0]->length(),
 815                                                                  region_name, 0,
 816                                                                  (AudioRegion::Flag) (AudioRegion::WholeFile|AudioRegion::DefaultFlags),
 817                                                                  false));
 818
 819         new_playlist->set_orig_diskstream_id (diskstream->id());
 820         new_playlist->add_region (region, 0);
 821         new_playlist->set_frozen (true);
 822         region->set_locked (true);
 823
 824         diskstream->use_playlist (dynamic_cast<AudioPlaylist*>(new_playlist));
 825         diskstream->set_record_enabled (false);
 826
 827         _freeze_record.state = Frozen;
 828         FreezeChange(); /* EMIT SIGNAL */
 829 }
 830
 831 void
 832 AudioTrack::unfreeze ()
 833 {
 834         if (_freeze_record.playlist) {
 835                 audio_diskstream()->use_playlist (_freeze_record.playlist);
 836
 837                 if (_freeze_record.have_mementos) {
 838
 839                         for (vector<FreezeRecordInsertInfo*>::iterator i = _freeze_record.insert_info.begin(); i != _freeze_record.insert_info.end(); ++i) {
 840                                 (*i)->memento ();
 841                         }
 842
 843                 } else {
 844
 845                         Glib::RWLock::ReaderLock lm (redirect_lock); // should this be a write lock? jlc
 846                         for (RedirectList::iterator i = _redirects.begin(); i != _redirects.end(); ++i) {
 847                                 for (vector<FreezeRecordInsertInfo*>::iterator ii = _freeze_record.insert_info.begin(); ii != _freeze_record.insert_info.end(); ++ii) {
 848                                         if ((*ii)->id == (*i)->id()) {
 849                                                 (*i)->set_state (((*ii)->state));
 850                                                 break;
 851                                         }
 852                                 }
 853                         }
 854                 }
 855
 856                 _freeze_record.playlist = 0;
 857         }
 858
 859         _freeze_record.state = UnFrozen;
 860         FreezeChange (); /* EMIT SIGNAL */
 861 }
 862