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