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/meter.h"
  40 #include "ardour/playlist_factory.h"
  41 #include "ardour/plugin_insert.h"
  42 #include "ardour/processor.h"
  43 #include "ardour/region_factory.h"
  44 #include "ardour/route_group_specialized.h"
  45 #include "ardour/session.h"
  46 #include "ardour/utils.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         use_new_diskstream ();
  57 }
  58
  59 AudioTrack::AudioTrack (Session& sess, const XMLNode& node, int /*version*/)
  60         : Track (sess, node)
  61 {
  62         _set_state (node, Stateful::loading_state_version, false);
  63 }
  64
  65 AudioTrack::~AudioTrack ()
  66 {
  67 }
  68
  69 void
  70 AudioTrack::use_new_diskstream ()
  71 {
  72         AudioDiskstream::Flag dflags = AudioDiskstream::Flag (0);
  73
  74         if (_flags & Hidden) {
  75                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Hidden);
  76         } else {
  77                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Recordable);
  78         }
  79
  80         if (_mode == Destructive) {
  81                 dflags = AudioDiskstream::Flag (dflags | AudioDiskstream::Destructive);
  82         } else if (_mode == NonLayered){
  83                 dflags = AudioDiskstream::Flag(dflags | AudioDiskstream::NonLayered);
  84         }
  85
  86
  87         boost::shared_ptr<AudioDiskstream> ds (new AudioDiskstream (_session, name(), dflags));
  88
  89         _session.add_diskstream (ds);
  90
  91         set_diskstream (boost::dynamic_pointer_cast<AudioDiskstream> (ds), this);
  92 }
  93
  94 int
  95 AudioTrack::set_mode (TrackMode m)
  96 {
  97         if (m != _mode) {
  98
  99                 if (_diskstream->set_destructive (m == Destructive)) {
 100                         return -1;
 101                 }
 102
 103                 _diskstream->set_non_layered (m == NonLayered);
 104                 _mode = m;
 105
 106                 TrackModeChanged (); /* EMIT SIGNAL */
 107         }
 108
 109         return 0;
 110 }
 111
 112 bool
 113 AudioTrack::can_use_mode (TrackMode m, bool& bounce_required)
 114 {
 115         switch (m) {
 116         case NonLayered:
 117         case Normal:
 118                 bounce_required = false;
 119                 return true;
 120
 121         case Destructive:
 122         default:
 123                 return _diskstream->can_become_destructive (bounce_required);
 124         }
 125 }
 126
 127 int
 128 AudioTrack::deprecated_use_diskstream_connections ()
 129 {
 130         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 131
 132         if (diskstream->deprecated_io_node == 0) {
 133                 return 0;
 134         }
 135
 136         const XMLProperty* prop;
 137         XMLNode& node (*diskstream->deprecated_io_node);
 138
 139         /* don't do this more than once. */
 140
 141         diskstream->deprecated_io_node = 0;
 142
 143         if ((prop = node.property ("gain")) != 0) {
 144                 _amp->set_gain (atof (prop->value().c_str()), this);
 145         }
 146
 147         if ((prop = node.property ("input-connection")) != 0) {
 148                 boost::shared_ptr<Bundle> c = _session.bundle_by_name (prop->value());
 149
 150                 if (c == 0) {
 151                         error << string_compose(_("Unknown bundle \"%1\" listed for input of %2"), prop->value(), _name) << endmsg;
 152
 153                         if ((c = _session.bundle_by_name (_("in 1"))) == 0) {
 154                                 error << _("No input bundles available as a replacement")
 155                                 << endmsg;
 156                                 return -1;
 157                         } else {
 158                                 info << string_compose (_("Bundle %1 was not available - \"in 1\" used instead"), prop->value())
 159                                << endmsg;
 160                         }
 161                 }
 162
 163                 _input->connect_ports_to_bundle (c, this);
 164
 165         } else if ((prop = node.property ("inputs")) != 0) {
 166                 if (_input->set_ports (prop->value())) {
 167                         error << string_compose(_("improper input channel list in XML node (%1)"), prop->value()) << endmsg;
 168                         return -1;
 169                 }
 170         }
 171
 172         return 0;
 173 }
 174
 175 int
 176 AudioTrack::set_diskstream (boost::shared_ptr<AudioDiskstream> ds, void * /*src*/)
 177 {
 178         _diskstream = ds;
 179         _diskstream->set_route (*this);
 180         _diskstream->set_destructive (_mode == Destructive);
 181         _diskstream->set_non_layered (_mode == NonLayered);
 182
 183         if (audio_diskstream()->deprecated_io_node) {
 184
 185                 if (!IO::connecting_legal) {
 186                         IO::ConnectingLegal.connect (mem_fun (*this, &AudioTrack::deprecated_use_diskstream_connections));
 187                 } else {
 188                         deprecated_use_diskstream_connections ();
 189                 }
 190         }
 191
 192         _diskstream->set_record_enabled (false);
 193         _diskstream->monitor_input (false);
 194
 195         ic_connection.disconnect();
 196         ic_connection = _input->changed.connect (mem_fun (*_diskstream, &Diskstream::handle_input_change));
 197
 198         DiskstreamChanged (); /* EMIT SIGNAL */
 199
 200         return 0;
 201 }
 202
 203 int
 204 AudioTrack::use_diskstream (string name)
 205 {
 206         boost::shared_ptr<AudioDiskstream> dstream;
 207
 208         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream>(_session.diskstream_by_name (name))) == 0) {
 209                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), name) << endmsg;
 210                 return -1;
 211         }
 212
 213         return set_diskstream (dstream, this);
 214 }
 215
 216 int
 217 AudioTrack::use_diskstream (const PBD::ID& id)
 218 {
 219         boost::shared_ptr<AudioDiskstream> dstream;
 220
 221         if ((dstream = boost::dynamic_pointer_cast<AudioDiskstream> (_session.diskstream_by_id (id))) == 0) {
 222                 error << string_compose(_("AudioTrack: audio diskstream \"%1\" not known by session"), id) << endmsg;
 223                 return -1;
 224         }
 225
 226         return set_diskstream (dstream, this);
 227 }
 228
 229 boost::shared_ptr<AudioDiskstream>
 230 AudioTrack::audio_diskstream() const
 231 {
 232         return boost::dynamic_pointer_cast<AudioDiskstream>(_diskstream);
 233 }
 234
 235 int
 236 AudioTrack::set_state (const XMLNode& node, int version)
 237 {
 238         return _set_state (node, version, true);
 239 }
 240
 241 int
 242 AudioTrack::_set_state (const XMLNode& node, int version, bool call_base)
 243 {
 244         const XMLProperty *prop;
 245         XMLNodeConstIterator iter;
 246
 247         if (call_base) {
 248                 if (Route::_set_state (node, version, call_base)) {
 249                         return -1;
 250                 }
 251         }
 252
 253         if ((prop = node.property (X_("mode"))) != 0) {
 254                 _mode = TrackMode (string_2_enum (prop->value(), _mode));
 255         } else {
 256                 _mode = Normal;
 257         }
 258
 259         if ((prop = node.property ("diskstream-id")) == 0) {
 260
 261                 /* some old sessions use the diskstream name rather than the ID */
 262
 263                 if ((prop = node.property ("diskstream")) == 0) {
 264                         fatal << _("programming error: AudioTrack given state without diskstream!") << endmsg;
 265                         /*NOTREACHED*/
 266                         return -1;
 267                 }
 268
 269                 if (use_diskstream (prop->value())) {
 270                         return -1;
 271                 }
 272
 273         } else {
 274
 275                 PBD::ID id (prop->value());
 276                 PBD::ID zero ("0");
 277
 278                 /* this wierd hack is used when creating tracks from a template. there isn't
 279                    a particularly good time to interpose between setting the first part of
 280                    the track state (notably Route::set_state() and the track mode), and the
 281                    second part (diskstream stuff). So, we have a special ID for the diskstream
 282                    that means "you should create a new diskstream here, not look for
 283                    an old one.
 284                 */
 285
 286                 if (id == zero) {
 287                         use_new_diskstream ();
 288                 } else if (use_diskstream (id)) {
 289                         return -1;
 290                 }
 291         }
 292
 293
 294         XMLNodeList nlist;
 295         XMLNodeConstIterator niter;
 296         XMLNode *child;
 297
 298         nlist = node.children();
 299         for (niter = nlist.begin(); niter != nlist.end(); ++niter){
 300                 child = *niter;
 301
 302                 if (child->name() == X_("recenable")) {
 303                         _rec_enable_control->set_state (*child, version);
 304                         _session.add_controllable (_rec_enable_control);
 305                 }
 306         }
 307
 308         pending_state = const_cast<XMLNode*> (&node);
 309
 310         if (_session.state_of_the_state() & Session::Loading) {
 311                 _session.StateReady.connect (mem_fun (*this, &AudioTrack::set_state_part_two));
 312         } else {
 313                 set_state_part_two ();
 314         }
 315
 316         return 0;
 317 }
 318
 319 XMLNode&
 320 AudioTrack::state(bool full_state)
 321 {
 322         XMLNode& root (Route::state(full_state));
 323         XMLNode* freeze_node;
 324         char buf[64];
 325
 326         if (_freeze_record.playlist) {
 327                 XMLNode* inode;
 328
 329                 freeze_node = new XMLNode (X_("freeze-info"));
 330                 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
 331                 freeze_node->add_property ("state", enum_2_string (_freeze_record.state));
 332
 333                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 334                         inode = new XMLNode (X_("processor"));
 335                         (*i)->id.print (buf, sizeof (buf));
 336                         inode->add_property (X_("id"), buf);
 337                         inode->add_child_copy ((*i)->state);
 338
 339                         freeze_node->add_child_nocopy (*inode);
 340                 }
 341
 342                 root.add_child_nocopy (*freeze_node);
 343         }
 344
 345         /* Alignment: act as a proxy for the diskstream */
 346
 347         XMLNode* align_node = new XMLNode (X_("Alignment"));
 348         AlignStyle as = _diskstream->alignment_style ();
 349         align_node->add_property (X_("style"), enum_2_string (as));
 350         root.add_child_nocopy (*align_node);
 351
 352         root.add_property (X_("mode"), enum_2_string (_mode));
 353
 354         /* we don't return diskstream state because we don't
 355            own the diskstream exclusively. control of the diskstream
 356            state is ceded to the Session, even if we create the
 357            diskstream.
 358         */
 359
 360         _diskstream->id().print (buf, sizeof (buf));
 361         root.add_property ("diskstream-id", buf);
 362
 363         root.add_child_nocopy (_rec_enable_control->get_state());
 364
 365         return root;
 366 }
 367
 368 void
 369 AudioTrack::set_state_part_two ()
 370 {
 371         XMLNode* fnode;
 372         XMLProperty* prop;
 373         LocaleGuard lg (X_("POSIX"));
 374
 375         /* This is called after all session state has been restored but before
 376            have been made ports and connections are established.
 377         */
 378
 379         if (pending_state == 0) {
 380                 return;
 381         }
 382
 383         if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
 384
 385                 _freeze_record.state = Frozen;
 386
 387                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 388                         delete *i;
 389                 }
 390                 _freeze_record.processor_info.clear ();
 391
 392                 if ((prop = fnode->property (X_("playlist"))) != 0) {
 393                         boost::shared_ptr<Playlist> pl = _session.playlist_by_name (prop->value());
 394                         if (pl) {
 395                                 _freeze_record.playlist = boost::dynamic_pointer_cast<AudioPlaylist> (pl);
 396                         } else {
 397                                 _freeze_record.playlist.reset ();
 398                                 _freeze_record.state = NoFreeze;
 399                         return;
 400                         }
 401                 }
 402
 403                 if ((prop = fnode->property (X_("state"))) != 0) {
 404                         _freeze_record.state = FreezeState (string_2_enum (prop->value(), _freeze_record.state));
 405                 }
 406
 407                 XMLNodeConstIterator citer;
 408                 XMLNodeList clist = fnode->children();
 409
 410                 for (citer = clist.begin(); citer != clist.end(); ++citer) {
 411                         if ((*citer)->name() != X_("processor")) {
 412                                 continue;
 413                         }
 414
 415                         if ((prop = (*citer)->property (X_("id"))) == 0) {
 416                                 continue;
 417                         }
 418
 419                         FreezeRecordProcessorInfo* frii = new FreezeRecordProcessorInfo (*((*citer)->children().front()),
 420                                                                                    boost::shared_ptr<Processor>());
 421                         frii->id = prop->value ();
 422                         _freeze_record.processor_info.push_back (frii);
 423                 }
 424         }
 425
 426         /* Alignment: act as a proxy for the diskstream */
 427
 428         if ((fnode = find_named_node (*pending_state, X_("Alignment"))) != 0) {
 429
 430                 if ((prop = fnode->property (X_("style"))) != 0) {
 431
 432                         /* fix for older sessions from before EnumWriter */
 433
 434                         string pstr;
 435
 436                         if (prop->value() == "capture") {
 437                                 pstr = "CaptureTime";
 438                         } else if (prop->value() == "existing") {
 439                                 pstr = "ExistingMaterial";
 440                         } else {
 441                                 pstr = prop->value();
 442                         }
 443
 444                         AlignStyle as = AlignStyle (string_2_enum (pstr, as));
 445                         _diskstream->set_persistent_align_style (as);
 446                 }
 447         }
 448         return;
 449 }
 450
 451 int
 452 AudioTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, int declick,
 453                   bool can_record, bool rec_monitors_input)
 454 {
 455         int dret;
 456         Sample* b;
 457         Sample* tmpb;
 458         nframes_t transport_frame;
 459         boost::shared_ptr<AudioDiskstream> diskstream = audio_diskstream();
 460
 461         {
 462                 Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
 463                 if (lm.locked()) {
 464                         // automation snapshot can also be called from the non-rt context
 465                         // and it uses the redirect list, so we take the lock out here
 466                         automation_snapshot (start_frame, false);
 467                 }
 468         }
 469
 470
 471         if (n_outputs().n_total() == 0 && _processors.empty()) {
 472                 return 0;
 473         }
 474
 475         if (!_active) {
 476                 silence (nframes);
 477                 return 0;
 478         }
 479
 480         transport_frame = _session.transport_frame();
 481
 482         if ((nframes = check_initial_delay (nframes, transport_frame)) == 0) {
 483
 484                 /* need to do this so that the diskstream sets its
 485                    playback distance to zero, thus causing diskstream::commit
 486                    to do nothing.
 487                 */
 488                 return diskstream->process (transport_frame, 0, can_record, rec_monitors_input);
 489         }
 490
 491         _silent = false;
 492         _amp->apply_gain_automation(false);
 493
 494         if ((dret = diskstream->process (transport_frame, nframes, can_record, rec_monitors_input)) != 0) {
 495                 silence (nframes);
 496                 return dret;
 497         }
 498
 499         /* special condition applies */
 500
 501         if (_meter_point == MeterInput) {
 502                 _input->process_input (_meter, start_frame, end_frame, nframes);
 503         }
 504
 505         if (diskstream->record_enabled() && !can_record && !_session.config.get_auto_input()) {
 506
 507                 /* not actually recording, but we want to hear the input material anyway,
 508                    at least potentially (depending on monitoring options)
 509                  */
 510
 511                 passthru (start_frame, end_frame, nframes, false);
 512
 513         } else if ((b = diskstream->playback_buffer(0)) != 0) {
 514
 515                 /*
 516                   XXX is it true that the earlier test on n_outputs()
 517                   means that we can avoid checking it again here? i think
 518                   so, because changing the i/o configuration of an IO
 519                   requires holding the AudioEngine lock, which we hold
 520                   while in the process() tree.
 521                 */
 522
 523
 524                 /* copy the diskstream data to all output buffers */
 525
 526                 size_t limit = _input->n_ports().n_audio();
 527                 BufferSet& bufs = _session.get_scratch_buffers ();
 528                 const size_t blimit = bufs.count().n_audio();
 529
 530                 uint32_t n;
 531                 uint32_t i;
 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);
 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 (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.playlist_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         boost::shared_ptr<Region> region (RegionFactory::create (srcs, 0,
 778                         srcs[0]->length(srcs[0]->timeline_position()),
 779                         region_name, 0,
 780                         (Region::Flag) (Region::WholeFile|Region::DefaultFlags),
 781                         false));
 782
 783         new_playlist->set_orig_diskstream_id (diskstream->id());
 784         new_playlist->add_region (region, _session.current_start_frame());
 785         new_playlist->set_frozen (true);
 786         region->set_locked (true);
 787
 788         diskstream->use_playlist (boost::dynamic_pointer_cast<AudioPlaylist>(new_playlist));
 789         diskstream->set_record_enabled (false);
 790
 791         /* reset stuff that has already been accounted for in the freeze process */
 792
 793         set_gain (1.0, this);
 794         _amp->gain_control()->set_automation_state (Off);
 795         /* XXX need to use _main_outs _panner->set_automation_state (Off); */
 796
 797         _freeze_record.state = Frozen;
 798         FreezeChange(); /* EMIT SIGNAL */
 799 }
 800
 801 void
 802 AudioTrack::unfreeze ()
 803 {
 804         if (_freeze_record.playlist) {
 805                 audio_diskstream()->use_playlist (_freeze_record.playlist);
 806
 807                 {
 808                         Glib::RWLock::ReaderLock lm (_processor_lock); // should this be a write lock? jlc
 809                         for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
 810                                 for (vector<FreezeRecordProcessorInfo*>::iterator ii = _freeze_record.processor_info.begin(); ii != _freeze_record.processor_info.end(); ++ii) {
 811                                         if ((*ii)->id == (*i)->id()) {
 812                                                 (*i)->set_state (((*ii)->state), Stateful::current_state_version);
 813                                                 break;
 814                                         }
 815                                 }
 816                         }
 817                 }
 818
 819                 _freeze_record.playlist.reset ();
 820                 set_gain (_freeze_record.gain, this);
 821                 _amp->gain_control()->set_automation_state (_freeze_record.gain_automation_state);
 822                 /* XXX need to use _main_outs _panner->set_automation_state (_freeze_record.pan_automation_state); */
 823         }
 824
 825         _freeze_record.state = UnFrozen;
 826         FreezeChange (); /* EMIT SIGNAL */
 827 }
 828