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