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