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 */
  19
  20
  21 #include "pbd/error.h"
  22 #include "pbd/enumwriter.h"
  23 #include "pbd/boost_debug.h"
  24
  25 #include "evoral/Curve.hpp"
  26
  27 #include "ardour/amp.h"
  28 #include "ardour/audio_buffer.h"
  29 #include "ardour/audio_diskstream.h"
  30 #include "ardour/audio_track.h"
  31 #include "ardour/audioplaylist.h"
  32 #include "ardour/audioregion.h"
  33 #include "ardour/audiosource.h"
  34 #include "ardour/buffer_set.h"
  35 #include "ardour/io_processor.h"
  36 #include "ardour/panner.h"
  37 #include "ardour/meter.h"
  38 #include "ardour/playlist_factory.h"
  39 #include "ardour/plugin_insert.h"
  40 #include "ardour/processor.h"
  41 #include "ardour/region_factory.h"
  42 #include "ardour/route_group_specialized.h"
  43 #include "ardour/session.h"
  44 #include "ardour/utils.h"
  45 #include "ardour/session_playlists.h"
  46 #include "i18n.h"
  47
  48 using namespace std;
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51
  52 AudioTrack::AudioTrack (Session& sess, string name, Route::Flag flag, TrackMode mode)
  53         : Track (sess, name, flag, mode)
  54 {
  55         use_new_diskstream ();
  56 }
  57
  58 AudioTrack::~AudioTrack ()
  59 {
  60 }
  61
  62 void
  63 AudioTrack::use_new_diskstream ()
  64 {
  65         AudioDiskstream::Flag dflags = AudioDiskstream::Flag (0);
  66
  67         if (_flags & Hidden) {
  68                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Hidden);
  69         } else {
  70                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Recordable);
  71         }
  72
  73         if (_mode == Destructive) {
  74                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Destructive);
  75         } else if (_mode == NonLayered){
  76                 dflags = AudioDiskstream::Flag(dflags | AudioDiskstream::NonLayered);
  77         }
  78
  79         AudioDiskstream* dsp (new AudioDiskstream (_session, name(), dflags));
  80         boost::shared_ptr<AudioDiskstream> ds (dsp);
  81
  82         _session.add_diskstream (ds);
  83
  84         set_diskstream (boost::dynamic_pointer_cast<AudioDiskstream> (ds), this);
  85 }
  86
  87 int
  88 AudioTrack::set_mode (TrackMode m)
  89 {
  90         if (m != _mode) {
  91
  92                 if (_diskstream->set_destructive (m == Destructive)) {
  93                         return -1;
  94                 }
  95
  96                 _diskstream->set_non_layered (m == NonLayered);
  97                 _mode = m;
  98
  99                 TrackModeChanged (); /* EMIT SIGNAL */
 100         }
 101
 102         return 0;
 103 }
 104
 105 bool
 106 AudioTrack::can_use_mode (TrackMode m, bool& bounce_required)
 107 {
 108         switch (m) {
 109         case NonLayered:
 110         case Normal:
 111                 bounce_required = false;
 112                 return true;
 113
 114         case Destructive:
 115         default:
 116                 return _diskstream->can_become_destructive (bounce_required);
 117         }
 118 }
 119
 120 int
 121 AudioTrack::deprecated_use_diskstream_connections ()
 122 {
 123         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 124
 125         if (diskstream->deprecated_io_node == 0) {
 126                 return 0;
 127         }
 128
 129         const XMLProperty* prop;
 130         XMLNode& node (*diskstream->deprecated_io_node);
 131
 132         /* don't do this more than once. */
 133
 134         diskstream->deprecated_io_node = 0;
 135
 136         if ((prop = node.property ("gain")) != 0) {
 137                 _amp->set_gain (atof (prop->value().c_str()), this);
 138         }
 139
 140         if ((prop = node.property ("input-connection")) != 0) {
 141                 boost::shared_ptr<Bundle> c = _session.bundle_by_name (prop->value());
 142
 143                 if (c == 0) {
 144                         error << string_compose(_("Unknown bundle \"%1\" listed for input of %2"), prop->value(), _name) << endmsg;
 145
 146                         if ((c = _session.bundle_by_name (_("in 1"))) == 0) {
 147                                 error << _("No input bundles available as a replacement")
 148                                 << endmsg;
 149                                 return -1;
 150                         } else {
 151                                 info << string_compose (_("Bundle %1 was not available - \"in 1\" used instead"), prop->value())
 152                                << endmsg;
 153                         }
 154                 }
 155
 156                 _input->connect_ports_to_bundle (c, this);
 157
 158         } else if ((prop = node.property ("inputs")) != 0) {
 159                 if (_input->set_ports (prop->value())) {
 160                         error << string_compose(_("improper input channel list in XML node (%1)"), prop->value()) << endmsg;
 161                         return -1;
 162                 }
 163         }
 164
 165         return 0;
 166 }
 167
 168 int
 169 AudioTrack::set_diskstream (boost::shared_ptr<AudioDiskstream> ds, void * /*src*/)
 170 {
 171         _diskstream = ds;
 172         _diskstream->set_route (*this);
 173         _diskstream->set_destructive (_mode == Destructive);
 174         _diskstream->set_non_layered (_mode == NonLayered);
 175
 176         if (audio_diskstream()->deprecated_io_node) {
 177
 178                 if (!IO::connecting_legal) {
 179                         IO::ConnectingLegal.connect_same_thread (*this, boost::bind (&AudioTrack::deprecated_use_diskstream_connections, this));
 180                 } else {
 181                         deprecated_use_diskstream_connections ();
 182                 }
 183         }
 184
 185         _diskstream->set_record_enabled (false);
 186         _diskstream->monitor_input (false);
 187
 188         DiskstreamChanged (); /* EMIT SIGNAL */
 189
 190         return 0;
 191 }
 192
 193 int
 194 AudioTrack::use_diskstream (string name)
 195 {
 196         boost::shared_ptr<AudioDiskstream> dstream;
 197
 198         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream>(_session.diskstream_by_name (name))) == 0) {
 199                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), name) << endmsg;
 200                 return -1;
 201         }
 202
 203         return set_diskstream (dstream, this);
 204 }
 205
 206 int
 207 AudioTrack::use_diskstream (const PBD::ID& id)
 208 {
 209         boost::shared_ptr<AudioDiskstream> dstream;
 210
 211         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream> (_session.diskstream_by_id (id))) == 0) {
 212                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), id) << endmsg;
 213                 return -1;
 214         }
 215
 216         return set_diskstream (dstream, this);
 217 }
 218
 219 boost::shared_ptr<AudioDiskstream>
 220 AudioTrack::audio_diskstream() const
 221 {
 222         return boost::dynamic_pointer_cast<AudioDiskstream>(_diskstream);
 223 }
 224
 225 int
 226 AudioTrack::set_state (const XMLNode& node, int version)
 227 {
 228         return _set_state (node, version, true);
 229 }
 230
 231 int
 232 AudioTrack::_set_state (const XMLNode& node, int version, bool call_base)
 233 {
 234         const XMLProperty *prop;
 235         XMLNodeConstIterator iter;
 236
 237         if (call_base) {
 238                 if (Route::_set_state (node, version, call_base)) {
 239                         return -1;
 240                 }
 241         }
 242
 243         if ((prop = node.property (X_("mode"))) != 0) {
 244                 _mode = TrackMode (string_2_enum (prop->value(), _mode));
 245         } else {
 246                 _mode = Normal;
 247         }
 248
 249         if ((prop = node.property ("diskstream-id")) == 0) {
 250
 251                 /* some old sessions use the diskstream name rather than the ID */
 252
 253                 if ((prop = node.property ("diskstream")) == 0) {
 254                         fatal << _("programming error: AudioTrack given state without diskstream!") << endmsg;
 255                         /*NOTREACHED*/
 256                         return -1;
 257                 }
 258
 259                 if (use_diskstream (prop->value())) {
 260                         return -1;
 261                 }
 262
 263         } else {
 264
 265                 PBD::ID id (prop->value());
 266                 PBD::ID zero ("0");
 267
 268                 /* this wierd hack is used when creating tracks from a template. there isn't
 269                    a particularly good time to interpose between setting the first part of
 270                    the track state (notably Route::set_state() and the track mode), and the
 271                    second part (diskstream stuff). So, we have a special ID for the diskstream
 272                    that means "you should create a new diskstream here, not look for
 273                    an old one.
 274                 */
 275
 276                 if (id == zero) {
 277                         use_new_diskstream ();
 278                 } else if (use_diskstream (id)) {
 279                         return -1;
 280                 }
 281         }
 282
 283
 284         XMLNodeList nlist;
 285         XMLNodeConstIterator niter;
 286         XMLNode *child;
 287
 288         nlist = node.children();
 289         for (niter = nlist.begin(); niter != nlist.end(); ++niter){
 290                 child = *niter;
 291
 292                 if (child->name() == X_("recenable")) {
 293                         _rec_enable_control->set_state (*child, version);
 294                         _session.add_controllable (_rec_enable_control);
 295                 }
 296         }
 297
 298         pending_state = const_cast<XMLNode*> (&node);
 299
 300         if (_session.state_of_the_state() & Session::Loading) {
 301                 _session.StateReady.connect_same_thread (*this, boost::bind (&AudioTrack::set_state_part_two, this));
 302         } else {
 303                 set_state_part_two ();
 304         }
 305
 306         return 0;
 307 }
 308
 309 XMLNode&
 310 AudioTrack::state(bool full_state)
 311 {
 312         XMLNode& root (Route::state(full_state));
 313         XMLNode* freeze_node;
 314         char buf[64];
 315
 316         if (_freeze_record.playlist) {
 317                 XMLNode* inode;
 318
 319                 freeze_node = new XMLNode (X_("freeze-info"));
 320                 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
 321                 freeze_node->add_property ("state", enum_2_string (_freeze_record.state));
 322
 323                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 324                         inode = new XMLNode (X_("processor"));
 325                         (*i)->id.print (buf, sizeof (buf));
 326                         inode->add_property (X_("id"), buf);
 327                         inode->add_child_copy ((*i)->state);
 328
 329                         freeze_node->add_child_nocopy (*inode);
 330                 }
 331
 332                 root.add_child_nocopy (*freeze_node);
 333         }
 334
 335         /* Alignment: act as a proxy for the diskstream */
 336
 337         XMLNode* align_node = new XMLNode (X_("Alignment"));
 338         AlignStyle as = _diskstream->alignment_style ();
 339         align_node->add_property (X_("style"), enum_2_string (as));
 340         root.add_child_nocopy (*align_node);
 341
 342         root.add_property (X_("mode"), enum_2_string (_mode));
 343
 344         /* we don't return diskstream state because we don't
 345            own the diskstream exclusively. control of the diskstream
 346            state is ceded to the Session, even if we create the
 347            diskstream.
 348         */
 349
 350         _diskstream->id().print (buf, sizeof (buf));
 351         root.add_property ("diskstream-id", buf);
 352
 353         root.add_child_nocopy (_rec_enable_control->get_state());
 354
 355         return root;
 356 }
 357
 358 void
 359 AudioTrack::set_state_part_two ()
 360 {
 361         XMLNode* fnode;
 362         XMLProperty* prop;
 363         LocaleGuard lg (X_("POSIX"));
 364
 365         /* This is called after all session state has been restored but before
 366            have been made ports and connections are established.
 367         */
 368
 369         if (pending_state == 0) {
 370                 return;
 371         }
 372
 373         if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
 374
 375                 _freeze_record.state = Frozen;
 376
 377                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 378                         delete *i;
 379                 }
 380                 _freeze_record.processor_info.clear ();
 381
 382                 if ((prop = fnode->property (X_("playlist"))) != 0) {
 383                         boost::shared_ptr<Playlist> pl = _session.playlists->by_name (prop->value());
 384                         if (pl) {
 385                                 _freeze_record.playlist = boost::dynamic_pointer_cast<AudioPlaylist> (pl);
 386                         } else {
 387                                 _freeze_record.playlist.reset ();
 388                                 _freeze_record.state = NoFreeze;
 389                         return;
 390                         }
 391                 }
 392
 393                 if ((prop = fnode->property (X_("state"))) != 0) {
 394                         _freeze_record.state = FreezeState (string_2_enum (prop->value(), _freeze_record.state));
 395                 }
 396
 397                 XMLNodeConstIterator citer;
 398                 XMLNodeList clist = fnode->children();
 399
 400                 for (citer = clist.begin(); citer != clist.end(); ++citer) {
 401                         if ((*citer)->name() != X_("processor")) {
 402                                 continue;
 403                         }
 404
 405                         if ((prop = (*citer)->property (X_("id"))) == 0) {
 406                                 continue;
 407                         }
 408
 409                         FreezeRecordProcessorInfo* frii = new FreezeRecordProcessorInfo (*((*citer)->children().front()),
 410                                                                                    boost::shared_ptr<Processor>());
 411                         frii->id = prop->value ();
 412                         _freeze_record.processor_info.push_back (frii);
 413                 }
 414         }
 415
 416         /* Alignment: act as a proxy for the diskstream */
 417
 418         if ((fnode = find_named_node (*pending_state, X_("Alignment"))) != 0) {
 419
 420                 if ((prop = fnode->property (X_("style"))) != 0) {
 421
 422                         /* fix for older sessions from before EnumWriter */
 423
 424                         string pstr;
 425
 426                         if (prop->value() == "capture") {
 427                                 pstr = "CaptureTime";
 428                         } else if (prop->value() == "existing") {
 429                                 pstr = "ExistingMaterial";
 430                         } else {
 431                                 pstr = prop->value();
 432                         }
 433
 434                         AlignStyle as = AlignStyle (string_2_enum (pstr, as));
 435                         _diskstream->set_persistent_align_style (as);
 436                 }
 437         }
 438         return;
 439 }
 440
 441 int
 442 AudioTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, int declick,
 443                   bool can_record, bool rec_monitors_input)
 444 {
 445         int dret;
 446         Sample* b;
 447         Sample* tmpb;
 448         nframes_t transport_frame;
 449         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 450
 451         {
 452                 Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
 453                 if (lm.locked()) {
 454                         // automation snapshot can also be called from the non-rt context
 455                         // and it uses the redirect list, so we take the lock out here
 456                         automation_snapshot (start_frame, false);
 457                 }
 458         }
 459
 460         if (n_outputs().n_total() == 0 && _processors.empty()) {
 461                 return 0;
 462         }
 463
 464         if (!_active) {
 465                 silence (nframes);
 466                 return 0;
 467         }
 468
 469         transport_frame = _session.transport_frame();
 470
 471         if ((nframes = check_initial_delay (nframes, transport_frame)) == 0) {
 472
 473                 /* need to do this so that the diskstream sets its
 474                    playback distance to zero, thus causing diskstream::commit
 475                    to do nothing.
 476                 */
 477                 return diskstream->process (transport_frame, 0, can_record, rec_monitors_input);
 478         }
 479
 480         _silent = false;
 481         _amp->apply_gain_automation(false);
 482
 483         if ((dret = diskstream->process (transport_frame, nframes, can_record, rec_monitors_input)) != 0) {
 484                 silence (nframes);
 485                 return dret;
 486         }
 487
 488         /* special condition applies */
 489
 490         if (_meter_point == MeterInput) {
 491                 _input->process_input (_meter, start_frame, end_frame, nframes);
 492         }
 493
 494         if (diskstream->record_enabled() && !can_record && !_session.config.get_auto_input()) {
 495
 496                 /* not actually recording, but we want to hear the input material anyway,
 497                    at least potentially (depending on monitoring options)
 498                  */
 499
 500                 passthru (start_frame, end_frame, nframes, false);
 501
 502         } else if ((b = diskstream->playback_buffer(0)) != 0) {
 503
 504                 /*
 505                   XXX is it true that the earlier test on n_outputs()
 506                   means that we can avoid checking it again here? i think
 507                   so, because changing the i/o configuration of an IO
 508                   requires holding the AudioEngine lock, which we hold
 509                   while in the process() tree.
 510                 */
 511
 512
 513                 /* copy the diskstream data to all output buffers */
 514
 515                 size_t limit = _input->n_ports().n_audio();
 516                 BufferSet& bufs = _session.get_scratch_buffers ();
 517                 const size_t blimit = bufs.count().n_audio();
 518
 519                 if (limit == 0) {
 520                         /* no inputs, try for diskstream channel count */
 521                         limit = diskstream->n_channels().n_audio();
 522                 }
 523
 524                 uint32_t n;
 525                 uint32_t i;
 526
 527                 cerr << _name << " Input = " << _input->n_ports()
 528                      << " Output " << _output->n_ports ()
 529                      << " limit " << limit
 530                      << " blimit " << blimit
 531                      << endl;
 532
 533                 if (limit > blimit) {
 534
 535                         /* example case: auditioner configured for stereo output,
 536                            but loaded with an 8 channel file. there are only
 537                            2 passthrough buffers, but n_process_buffers() will
 538                            return 8.
 539
 540                            arbitrary decision: map all channels in the diskstream
 541                            to the outputs available.
 542                         */
 543
 544                         float scaling = limit/blimit;
 545
 546                         for (i = 0, n = 1; i < blimit; ++i, ++n) {
 547
 548                                 /* first time through just copy a channel into
 549                                    the output buffer.
 550                                 */
 551
 552                                 Sample* bb = bufs.get_audio (i).data();
 553
 554                                 for (nframes_t xx = 0; xx < nframes; ++xx) {
 555                                         bb[xx] = b[xx] * scaling;
 556                                 }
 557
 558                                 if (n < diskstream->n_channels().n_audio()) {
 559                                         tmpb = diskstream->playback_buffer(n);
 560                                         if (tmpb!=0) {
 561                                                 b = tmpb;
 562                                         }
 563                                 }
 564                         }
 565
 566                         for (;i < limit; ++i, ++n) {
 567
 568                                 /* for all remaining channels, sum with existing
 569                                    data in the output buffers
 570                                 */
 571
 572                                 bufs.get_audio (i%blimit).accumulate_with_gain_from (b, nframes, 0, scaling);
 573
 574                                 if (n < diskstream->n_channels().n_audio()) {
 575                                         tmpb = diskstream->playback_buffer(n);
 576                                         if (tmpb!=0) {
 577                                                 b = tmpb;
 578                                         }
 579                                 }
 580
 581                         }
 582
 583                         limit = blimit;
 584
 585                 } else {
 586                         for (i = 0, n = 1; i < limit; ++i, ++n) {
 587                                 memcpy (bufs.get_audio (i).data(), b, sizeof (Sample) * nframes);
 588                                 if (n < diskstream->n_channels().n_audio()) {
 589                                         tmpb = diskstream->playback_buffer(n);
 590                                         if (tmpb!=0) {
 591                                                 b = tmpb;
 592                                         }
 593                                 }
 594                         }
 595
 596                         /* try to leave any MIDI buffers alone */
 597
 598                         ChanCount chn;
 599                         chn.set_audio (limit);
 600                         chn.set_midi (_input->n_ports().n_midi());
 601                         bufs.set_count (chn);
 602                 }
 603
 604                 /* don't waste time with automation if we're recording or we've just stopped (yes it can happen) */
 605
 606                 if (!diskstream->record_enabled() && _session.transport_rolling()) {
 607 #ifdef XXX_MOVE_THIS_TO_AMP
 608                         Glib::Mutex::Lock am (data().control_lock(), Glib::TRY_LOCK);
 609
 610                         if (am.locked() && gain_control()->automation_playback()) {
 611                                 _amp->apply_gain_automation(
 612                                                 gain_control()->list()->curve().rt_safe_get_vector (
 613                                                         start_frame, end_frame, _session.gain_automation_buffer(), nframes));
 614                         }
 615 #endif
 616                 }
 617
 618                 process_output_buffers (bufs, start_frame, end_frame, nframes, (!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick);
 619
 620         } else {
 621                 /* problem with the diskstream; just be quiet for a bit */
 622                 silence (nframes);
 623         }
 624
 625         return 0;
 626 }
 627
 628 int
 629 AudioTrack::export_stuff (BufferSet& buffers, sframes_t start, nframes_t nframes, bool enable_processing)
 630 {
 631         gain_t  gain_buffer[nframes];
 632         float   mix_buffer[nframes];
 633         ProcessorList::iterator i;
 634         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 635
 636         Glib::RWLock::ReaderLock rlock (_processor_lock);
 637
 638         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(diskstream->playlist());
 639         assert(apl);
 640
 641         assert(buffers.get_audio(0).capacity() >= nframes);
 642
 643         if (apl->read (buffers.get_audio(0).data(), mix_buffer, gain_buffer, start, nframes) != nframes) {
 644                 return -1;
 645         }
 646
 647         assert(buffers.count().n_audio() >= 1);
 648         uint32_t n=1;
 649         Sample* b = buffers.get_audio(0).data();
 650         BufferSet::audio_iterator bi = buffers.audio_begin();
 651         ++bi;
 652         for ( ; bi != buffers.audio_end(); ++bi, ++n) {
 653                 if (n < diskstream->n_channels().n_audio()) {
 654                         if (apl->read (bi->data(), mix_buffer, gain_buffer, start, nframes, n) != nframes) {
 655                                 return -1;
 656                         }
 657                         b = bi->data();
 658                 }
 659                 else {
 660                         /* duplicate last across remaining buffers */
 661                         memcpy (bi->data(), b, sizeof (Sample) * nframes);
 662                 }
 663         }
 664
 665         // If no processing is required, there's no need to go any further.
 666         if (!enable_processing) {
 667                 return 0;
 668         }
 669
 670         /* note: only run processors during export. other layers in the machinery
 671            will already have checked that there are no external port processors.
 672         */
 673
 674         for (i = _processors.begin(); i != _processors.end(); ++i) {
 675                 boost::shared_ptr<Processor> processor;
 676                 if ((processor = boost::dynamic_pointer_cast<Processor>(*i)) != 0) {
 677                         processor->run (buffers, start, start+nframes, nframes, true);
 678                 }
 679         }
 680
 681         return 0;
 682 }
 683
 684 boost::shared_ptr<Region>
 685 AudioTrack::bounce (InterThreadInfo& itt)
 686 {
 687         vector<boost::shared_ptr<Source> > srcs;
 688         return _session.write_one_track (*this, _session.current_start_frame(), _session.current_end_frame(), false, srcs, itt);
 689 }
 690
 691 boost::shared_ptr<Region>
 692 AudioTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt, bool enable_processing)
 693 {
 694         vector<boost::shared_ptr<Source> > srcs;
 695         return _session.write_one_track (*this, start, end, false, srcs, itt, enable_processing);
 696 }
 697
 698 void
 699 AudioTrack::freeze_me (InterThreadInfo& itt)
 700 {
 701         vector<boost::shared_ptr<Source> > srcs;
 702         string new_playlist_name;
 703         boost::shared_ptr<Playlist> new_playlist;
 704         string dir;
 705         string region_name;
 706         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 707
 708         if ((_freeze_record.playlist = boost::dynamic_pointer_cast<AudioPlaylist>(diskstream->playlist())) == 0) {
 709                 return;
 710         }
 711
 712         uint32_t n = 1;
 713
 714         while (n < (UINT_MAX-1)) {
 715
 716                 string candidate;
 717
 718                 candidate = string_compose ("<F%2>%1", _freeze_record.playlist->name(), n);
 719
 720                 if (_session.playlists->by_name (candidate) == 0) {
 721                         new_playlist_name = candidate;
 722                         break;
 723                 }
 724
 725                 ++n;
 726
 727         }
 728
 729         if (n == (UINT_MAX-1)) {
 730           error << string_compose (X_("There are too many frozen versions of playlist \"%1\""
 731                             " to create another one"), _freeze_record.playlist->name())
 732                << endmsg;
 733                 return;
 734         }
 735
 736         boost::shared_ptr<Region> res;
 737
 738         if ((res = _session.write_one_track (*this, _session.current_start_frame(), _session.current_end_frame(), true, srcs, itt)) == 0) {
 739                 return;
 740         }
 741
 742         _freeze_record.processor_info.clear ();
 743
 744         {
 745                 Glib::RWLock::ReaderLock lm (_processor_lock);
 746
 747                 for (ProcessorList::iterator r = _processors.begin(); r != _processors.end(); ++r) {
 748
 749                         boost::shared_ptr<Processor> processor;
 750
 751                         if ((processor = boost::dynamic_pointer_cast<Processor>(*r)) != 0) {
 752
 753                                 FreezeRecordProcessorInfo* frii  = new FreezeRecordProcessorInfo ((*r)->get_state(), processor);
 754
 755                                 frii->id = processor->id();
 756
 757                                 _freeze_record.processor_info.push_back (frii);
 758
 759                                 /* now deactivate the processor */
 760
 761                                 processor->deactivate ();
 762                                 _session.set_dirty ();
 763                         }
 764                 }
 765         }
 766
 767         new_playlist = PlaylistFactory::create (DataType::AUDIO, _session, new_playlist_name, false);
 768
 769         _freeze_record.gain = _amp->gain();
 770         _freeze_record.gain_automation_state = _amp->gain_control()->automation_state();
 771         /* XXX need main outs automation state _freeze_record.pan_automation_state = _mainpanner->automation_state(); */
 772
 773         region_name = new_playlist_name;
 774
 775         /* create a new region from all filesources, keep it private */
 776
 777         PropertyList plist;
 778
 779         plist.add (Properties::start, 0);
 780         plist.add (Properties::length, srcs[0]->length(srcs[0]->timeline_position()));
 781         plist.add (Properties::name, region_name);
 782         plist.add (Properties::whole_file, true);
 783
 784         boost::shared_ptr<Region> region (RegionFactory::create (srcs, plist, false));
 785
 786         new_playlist->set_orig_diskstream_id (diskstream->id());
 787         new_playlist->add_region (region, _session.current_start_frame());
 788         new_playlist->set_frozen (true);
 789         region->set_locked (true);
 790
 791         diskstream->use_playlist (boost::dynamic_pointer_cast<AudioPlaylist>(new_playlist));
 792         diskstream->set_record_enabled (false);
 793
 794         /* reset stuff that has already been accounted for in the freeze process */
 795
 796         set_gain (1.0, this);
 797         _amp->gain_control()->set_automation_state (Off);
 798         /* XXX need to use _main_outs _panner->set_automation_state (Off); */
 799
 800         _freeze_record.state = Frozen;
 801         FreezeChange(); /* EMIT SIGNAL */
 802 }
 803
 804 void
 805 AudioTrack::unfreeze ()
 806 {
 807         if (_freeze_record.playlist) {
 808                 audio_diskstream()->use_playlist (_freeze_record.playlist);
 809
 810                 {
 811                         Glib::RWLock::ReaderLock lm (_processor_lock); // should this be a write lock? jlc
 812                         for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
 813                                 for (vector<FreezeRecordProcessorInfo*>::iterator ii = _freeze_record.processor_info.begin(); ii != _freeze_record.processor_info.end(); ++ii) {
 814                                         if ((*ii)->id == (*i)->id()) {
 815                                                 (*i)->set_state (((*ii)->state), Stateful::current_state_version);
 816                                                 break;
 817                                         }
 818                                 }
 819                         }
 820                 }
 821
 822                 _freeze_record.playlist.reset ();
 823                 set_gain (_freeze_record.gain, this);
 824                 _amp->gain_control()->set_automation_state (_freeze_record.gain_automation_state);
 825                 /* XXX need to use _main_outs _panner->set_automation_state (_freeze_record.pan_automation_state); */
 826         }
 827
 828         _freeze_record.state = UnFrozen;
 829         FreezeChange (); /* EMIT SIGNAL */
 830 }
 831