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