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