libs/ardour/track.cc

   1 /*
   2     Copyright (C) 2006 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 #include "pbd/error.h"
  19
  20 #include "ardour/amp.h"
  21 #include "ardour/audioplaylist.h"
  22 #include "ardour/audioregion.h"
  23 #include "ardour/audiosource.h"
  24 #include "ardour/debug.h"
  25 #include "ardour/delivery.h"
  26 #include "ardour/diskstream.h"
  27 #include "ardour/io_processor.h"
  28 #include "ardour/meter.h"
  29 #include "ardour/port.h"
  30 #include "ardour/processor.h"
  31 #include "ardour/route_group_specialized.h"
  32 #include "ardour/session.h"
  33 #include "ardour/track.h"
  34 #include "ardour/utils.h"
  35
  36 #include "i18n.h"
  37
  38 using namespace std;
  39 using namespace ARDOUR;
  40 using namespace PBD;
  41
  42 Track::Track (Session& sess, string name, Route::Flag flag, TrackMode mode, DataType default_type)
  43         : Route (sess, name, flag, default_type)
  44         , _saved_meter_point (_meter_point)
  45         , _mode (mode)
  46         , _rec_enable_control (new RecEnableControllable(*this))
  47 {
  48         _freeze_record.state = NoFreeze;
  49         _declickable = true;
  50 }
  51
  52 Track::~Track ()
  53 {
  54         DEBUG_TRACE (DEBUG::Destruction, string_compose ("track %1 destructor\n", _name));
  55 }
  56
  57 int
  58 Track::init ()
  59 {
  60         if (Route::init ()) {
  61                 return -1;
  62         }
  63
  64         return 0;
  65 }
  66 XMLNode&
  67 Track::get_state ()
  68 {
  69         return state (true);
  70 }
  71
  72
  73
  74 XMLNode&
  75 Track::get_template ()
  76 {
  77         return state (false);
  78 }
  79
  80 void
  81 Track::toggle_monitor_input ()
  82 {
  83         for (PortSet::iterator i = _input->ports().begin(); i != _input->ports().end(); ++i) {
  84                 i->ensure_monitor_input(!i->monitoring_input());
  85         }
  86 }
  87
  88 Track::FreezeRecord::~FreezeRecord ()
  89 {
  90         for (vector<FreezeRecordProcessorInfo*>::iterator i = processor_info.begin(); i != processor_info.end(); ++i) {
  91                 delete *i;
  92         }
  93 }
  94
  95 Track::FreezeState
  96 Track::freeze_state() const
  97 {
  98         return _freeze_record.state;
  99 }
 100
 101 Track::RecEnableControllable::RecEnableControllable (Track& s)
 102         : Controllable (X_("recenable")), track (s)
 103 {
 104 }
 105
 106 void
 107 Track::RecEnableControllable::set_value (double val)
 108 {
 109         bool bval = ((val >= 0.5) ? true: false);
 110         track.set_record_enabled (bval, this);
 111 }
 112
 113 double
 114 Track::RecEnableControllable::get_value (void) const
 115 {
 116         if (track.record_enabled()) { return 1.0; }
 117         return 0.0;
 118 }
 119
 120 bool
 121 Track::record_enabled () const
 122 {
 123         return _diskstream && _diskstream->record_enabled ();
 124 }
 125
 126 bool
 127 Track::can_record()
 128 {
 129         bool will_record = true;
 130         for (PortSet::iterator i = _input->ports().begin(); i != _input->ports().end() && will_record; ++i) {
 131                 if (!i->connected())
 132                         will_record = false;
 133         }
 134
 135         return will_record;
 136 }
 137
 138 void
 139 Track::set_record_enabled (bool yn, void *src)
 140 {
 141         if (!_session.writable()) {
 142                 return;
 143         }
 144
 145         if (_freeze_record.state == Frozen) {
 146                 return;
 147         }
 148
 149         if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_recenable()) {
 150                 _route_group->apply (&Track::set_record_enabled, yn, _route_group);
 151                 return;
 152         }
 153
 154         /* keep track of the meter point as it was before we rec-enabled */
 155         if (!_diskstream->record_enabled()) {
 156                 _saved_meter_point = _meter_point;
 157         }
 158
 159         _diskstream->set_record_enabled (yn);
 160
 161         if (_diskstream->record_enabled()) {
 162                 if (_meter_point != MeterCustom) {
 163                         set_meter_point (MeterInput);
 164                 }
 165         } else {
 166                 set_meter_point (_saved_meter_point);
 167         }
 168
 169         _rec_enable_control->Changed ();
 170 }
 171
 172
 173 bool
 174 Track::set_name (const string& str)
 175 {
 176         bool ret;
 177
 178         if (record_enabled() && _session.actively_recording()) {
 179                 /* this messes things up if done while recording */
 180                 return false;
 181         }
 182
 183         _diskstream->set_name (str);
 184
 185         /* save state so that the statefile fully reflects any filename changes */
 186
 187         if ((ret = Route::set_name (str)) == 0) {
 188                 _session.save_state ("");
 189         }
 190
 191         return ret;
 192 }
 193
 194 void
 195 Track::set_latency_compensation (framecnt_t longest_session_latency)
 196 {
 197         Route::set_latency_compensation (longest_session_latency);
 198         _diskstream->set_roll_delay (_roll_delay);
 199 }
 200
 201 void
 202 Track::zero_diskstream_id_in_xml (XMLNode& node)
 203 {
 204         if (node.property ("diskstream-id")) {
 205                 node.add_property ("diskstream-id", "0");
 206         }
 207 }
 208
 209 int
 210 Track::no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
 211                 bool session_state_changing, bool can_record, bool /*rec_monitors_input*/)
 212 {
 213         Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
 214         if (!lm.locked()) {
 215                 return 0;
 216         }
 217
 218         if (n_outputs().n_total() == 0) {
 219                 return 0;
 220         }
 221
 222         if (!_active) {
 223                 silence (nframes);
 224                 return 0;
 225         }
 226
 227         if (session_state_changing) {
 228                 if (_session.transport_speed() != 0.0f) {
 229                         /* we're rolling but some state is changing (e.g. our diskstream contents)
 230                            so we cannot use them. Be silent till this is over. Don't declick.
 231
 232                            XXX note the absurdity of ::no_roll() being called when we ARE rolling!
 233                         */
 234                         passthru_silence (start_frame, end_frame, nframes, 0);
 235                         return 0;
 236                 }
 237                 /* we're really not rolling, so we're either delivery silence or actually
 238                    monitoring, both of which are safe to do while session_state_changing is true.
 239                 */
 240         }
 241
 242         _diskstream->check_record_status (start_frame, can_record);
 243
 244         bool be_silent;
 245
 246         if (_have_internal_generator) {
 247                 /* since the instrument has no input streams,
 248                    there is no reason to send any signal
 249                    into the route.
 250                 */
 251                 be_silent = true;
 252         } else {
 253                 be_silent = send_silence ();
 254         }
 255
 256         _amp->apply_gain_automation(false);
 257
 258         if (be_silent) {
 259
 260                 /* if we're sending silence, but we want the meters to show levels for the signal,
 261                    meter right here.
 262                 */
 263
 264                 if (_have_internal_generator) {
 265                         passthru_silence (start_frame, end_frame, nframes, 0);
 266                 } else {
 267                         if (_meter_point == MeterInput) {
 268                                 _input->process_input (_meter, start_frame, end_frame, nframes);
 269                         }
 270                         passthru_silence (start_frame, end_frame, nframes, 0);
 271                 }
 272
 273         } else {
 274
 275                 /* we're sending signal, but we may still want to meter the input.
 276                  */
 277
 278                 passthru (start_frame, end_frame, nframes, false);
 279         }
 280
 281         _main_outs->flush_buffers (nframes, end_frame - start_frame - 1);
 282
 283         return 0;
 284 }
 285
 286 int
 287 Track::silent_roll (pframes_t nframes, framepos_t /*start_frame*/, framepos_t /*end_frame*/,
 288                     bool can_record, bool rec_monitors_input, bool& need_butler)
 289 {
 290         Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
 291         if (!lm.locked()) {
 292                 return 0;
 293         }
 294
 295         if (n_outputs().n_total() == 0 && _processors.empty()) {
 296                 return 0;
 297         }
 298
 299         if (!_active) {
 300                 silence (nframes);
 301                 return 0;
 302         }
 303
 304         _silent = true;
 305         _amp->apply_gain_automation(false);
 306
 307         silence (nframes);
 308
 309         return _diskstream->process (_session.transport_frame(), nframes, can_record, rec_monitors_input, need_butler);
 310 }
 311
 312 void
 313 Track::set_diskstream (boost::shared_ptr<Diskstream> ds)
 314 {
 315         _diskstream = ds;
 316
 317         ds->PlaylistChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_playlist_changed, this));
 318         diskstream_playlist_changed ();
 319         ds->RecordEnableChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_record_enable_changed, this));
 320         ds->SpeedChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_speed_changed, this));
 321         ds->AlignmentStyleChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_alignment_style_changed, this));
 322 }
 323
 324 void
 325 Track::diskstream_playlist_changed ()
 326 {
 327         PlaylistChanged (); /* EMIT SIGNAL */
 328 }
 329
 330 void
 331 Track::diskstream_record_enable_changed ()
 332 {
 333         RecordEnableChanged (); /* EMIT SIGNAL */
 334 }
 335
 336 void
 337 Track::diskstream_speed_changed ()
 338 {
 339         SpeedChanged (); /* EMIT SIGNAL */
 340 }
 341
 342 void
 343 Track::diskstream_alignment_style_changed ()
 344 {
 345         AlignmentStyleChanged (); /* EMIT SIGNAL */
 346 }
 347
 348 boost::shared_ptr<Playlist>
 349 Track::playlist ()
 350 {
 351         return _diskstream->playlist ();
 352 }
 353
 354 void
 355 Track::monitor_input (bool m)
 356 {
 357         _diskstream->monitor_input (m);
 358 }
 359
 360 bool
 361 Track::destructive () const
 362 {
 363         return _diskstream->destructive ();
 364 }
 365
 366 list<boost::shared_ptr<Source> > &
 367 Track::last_capture_sources ()
 368 {
 369         return _diskstream->last_capture_sources ();
 370 }
 371
 372 void
 373 Track::set_capture_offset ()
 374 {
 375         _diskstream->set_capture_offset ();
 376 }
 377
 378 list<boost::shared_ptr<Source> >
 379 Track::steal_write_sources()
 380 {
 381         return _diskstream->steal_write_sources ();
 382 }
 383
 384 void
 385 Track::reset_write_sources (bool r, bool force)
 386 {
 387         _diskstream->reset_write_sources (r, force);
 388 }
 389
 390 float
 391 Track::playback_buffer_load () const
 392 {
 393         return _diskstream->playback_buffer_load ();
 394 }
 395
 396 float
 397 Track::capture_buffer_load () const
 398 {
 399         return _diskstream->capture_buffer_load ();
 400 }
 401
 402 int
 403 Track::do_refill ()
 404 {
 405         return _diskstream->do_refill ();
 406 }
 407
 408 int
 409 Track::do_flush (RunContext c, bool force)
 410 {
 411         return _diskstream->do_flush (c, force);
 412 }
 413
 414 void
 415 Track::set_pending_overwrite (bool o)
 416 {
 417         _diskstream->set_pending_overwrite (o);
 418 }
 419
 420 int
 421 Track::seek (framepos_t p, bool complete_refill)
 422 {
 423         return _diskstream->seek (p, complete_refill);
 424 }
 425
 426 bool
 427 Track::hidden () const
 428 {
 429         return _diskstream->hidden ();
 430 }
 431
 432 int
 433 Track::can_internal_playback_seek (framepos_t p)
 434 {
 435         return _diskstream->can_internal_playback_seek (p);
 436 }
 437
 438 int
 439 Track::internal_playback_seek (framepos_t p)
 440 {
 441         return _diskstream->internal_playback_seek (p);
 442 }
 443
 444 void
 445 Track::non_realtime_input_change ()
 446 {
 447         _diskstream->non_realtime_input_change ();
 448 }
 449
 450 void
 451 Track::non_realtime_locate (framepos_t p)
 452 {
 453         _diskstream->non_realtime_locate (p);
 454 }
 455
 456 void
 457 Track::non_realtime_set_speed ()
 458 {
 459         _diskstream->non_realtime_set_speed ();
 460 }
 461
 462 int
 463 Track::overwrite_existing_buffers ()
 464 {
 465         return _diskstream->overwrite_existing_buffers ();
 466 }
 467
 468 framecnt_t
 469 Track::get_captured_frames (uint32_t n) const
 470 {
 471         return _diskstream->get_captured_frames (n);
 472 }
 473
 474 int
 475 Track::set_loop (Location* l)
 476 {
 477         return _diskstream->set_loop (l);
 478 }
 479
 480 void
 481 Track::transport_looped (framepos_t p)
 482 {
 483         _diskstream->transport_looped (p);
 484 }
 485
 486 bool
 487 Track::realtime_set_speed (double s, bool g)
 488 {
 489         return _diskstream->realtime_set_speed (s, g);
 490 }
 491
 492 void
 493 Track::transport_stopped_wallclock (struct tm & n, time_t t, bool g)
 494 {
 495         _diskstream->transport_stopped_wallclock (n, t, g);
 496 }
 497
 498 bool
 499 Track::pending_overwrite () const
 500 {
 501         return _diskstream->pending_overwrite ();
 502 }
 503
 504 double
 505 Track::speed () const
 506 {
 507         return _diskstream->speed ();
 508 }
 509
 510 void
 511 Track::prepare_to_stop (framepos_t p)
 512 {
 513         _diskstream->prepare_to_stop (p);
 514 }
 515
 516 void
 517 Track::set_slaved (bool s)
 518 {
 519         _diskstream->set_slaved (s);
 520 }
 521
 522 ChanCount
 523 Track::n_channels ()
 524 {
 525         return _diskstream->n_channels ();
 526 }
 527
 528 framepos_t
 529 Track::get_capture_start_frame (uint32_t n) const
 530 {
 531         return _diskstream->get_capture_start_frame (n);
 532 }
 533
 534 AlignStyle
 535 Track::alignment_style () const
 536 {
 537         return _diskstream->alignment_style ();
 538 }
 539
 540 AlignChoice
 541 Track::alignment_choice () const
 542 {
 543         return _diskstream->alignment_choice ();
 544 }
 545
 546 framepos_t
 547 Track::current_capture_start () const
 548 {
 549         return _diskstream->current_capture_start ();
 550 }
 551
 552 framepos_t
 553 Track::current_capture_end () const
 554 {
 555         return _diskstream->current_capture_end ();
 556 }
 557
 558 void
 559 Track::playlist_modified ()
 560 {
 561         _diskstream->playlist_modified ();
 562 }
 563
 564 int
 565 Track::use_playlist (boost::shared_ptr<Playlist> p)
 566 {
 567         return _diskstream->use_playlist (p);
 568 }
 569
 570 int
 571 Track::use_copy_playlist ()
 572 {
 573         return _diskstream->use_copy_playlist ();
 574 }
 575
 576 int
 577 Track::use_new_playlist ()
 578 {
 579         return _diskstream->use_new_playlist ();
 580 }
 581
 582 uint32_t
 583 Track::read_data_count () const
 584 {
 585         return _diskstream->read_data_count ();
 586 }
 587
 588 void
 589 Track::set_align_style (AlignStyle s, bool force)
 590 {
 591         _diskstream->set_align_style (s, force);
 592 }
 593
 594 void
 595 Track::set_align_choice (AlignChoice s, bool force)
 596 {
 597         _diskstream->set_align_choice (s, force);
 598 }
 599
 600 uint32_t
 601 Track::write_data_count () const
 602 {
 603         return _diskstream->write_data_count ();
 604 }
 605
 606 PBD::ID const &
 607 Track::diskstream_id () const
 608 {
 609         return _diskstream->id ();
 610 }
 611
 612 void
 613 Track::set_block_size (pframes_t n)
 614 {
 615         Route::set_block_size (n);
 616         _diskstream->set_block_size (n);
 617 }
 618
 619 void
 620 Track::adjust_playback_buffering ()
 621 {
 622         if (_diskstream) {
 623                 _diskstream->adjust_playback_buffering ();
 624         }
 625 }
 626
 627 void
 628 Track::adjust_capture_buffering ()
 629 {
 630         if (_diskstream) {
 631                 _diskstream->adjust_capture_buffering ();
 632         }
 633 }
 634
 635 bool
 636 Track::send_silence () const
 637 {
 638         /*
 639           ADATs work in a strange way..
 640           they monitor input always when stopped.and auto-input is engaged.
 641
 642           Other machines switch to input on stop if the track is record enabled,
 643           regardless of the auto input setting (auto input only changes the
 644           monitoring state when the transport is rolling)
 645         */
 646
 647         bool send_silence;
 648
 649         if (!Config->get_tape_machine_mode()) {
 650                 /*
 651                   ADATs work in a strange way..
 652                   they monitor input always when stopped.and auto-input is engaged.
 653                 */
 654                 if ((Config->get_monitoring_model() == SoftwareMonitoring)
 655                     && (_session.config.get_auto_input () || _diskstream->record_enabled())) {
 656                         send_silence = false;
 657                 } else {
 658                         send_silence = true;
 659                 }
 660         } else {
 661                 /*
 662                   Other machines switch to input on stop if the track is record enabled,
 663                   regardless of the auto input setting (auto input only changes the
 664                   monitoring state when the transport is rolling)
 665                 */
 666                 if ((Config->get_monitoring_model() == SoftwareMonitoring)
 667                     && _diskstream->record_enabled()) {
 668                         send_silence = false;
 669                 } else {
 670                         send_silence = true;
 671                 }
 672         }
 673
 674         return send_silence;
 675 }
 676
 677 void
 678 Track::maybe_declick (BufferSet& bufs, framecnt_t nframes, int declick)
 679 {
 680         /* never declick if there is an internal generator - we just want it to
 681            keep generating sound without interruption.
 682         */
 683
 684         if (_have_internal_generator) {
 685                 return;
 686         }
 687
 688         if (!declick) {
 689                 declick = _pending_declick;
 690         }
 691
 692         if (declick != 0) {
 693                 Amp::declick (bufs, nframes, declick);
 694         }
 695 }