libs/ardour/midi_track.cc

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3         By Dave Robillard, 2006
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19 #include "pbd/error.h"
  20
  21 #include "pbd/enumwriter.h"
  22 #include "pbd/convert.h"
  23 #include "midi++/events.h"
  24 #include "evoral/midi_util.h"
  25
  26 #include "ardour/amp.h"
  27 #include "ardour/buffer_set.h"
  28 #include "ardour/debug.h"
  29 #include "ardour/delivery.h"
  30 #include "ardour/io_processor.h"
  31 #include "ardour/meter.h"
  32 #include "ardour/midi_diskstream.h"
  33 #include "ardour/midi_playlist.h"
  34 #include "ardour/midi_port.h"
  35 #include "ardour/midi_region.h"
  36 #include "ardour/midi_source.h"
  37 #include "ardour/midi_track.h"
  38 #include "ardour/panner.h"
  39 #include "ardour/port.h"
  40 #include "ardour/processor.h"
  41 #include "ardour/route_group_specialized.h"
  42 #include "ardour/session.h"
  43 #include "ardour/session_playlists.h"
  44 #include "ardour/utils.h"
  45
  46 #include "i18n.h"
  47
  48 using namespace std;
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51
  52 MidiTrack::MidiTrack (Session& sess, string name, Route::Flag flag, TrackMode mode)
  53         : Track (sess, name, flag, mode, DataType::MIDI)
  54         , _immediate_events(1024) // FIXME: size?
  55         , _step_edit_ring_buffer(64) // FIXME: size?
  56         , _note_mode(Sustained)
  57         , _step_editing (false)
  58         , _default_channel (0)
  59         , _midi_thru (true)
  60 {
  61 }
  62
  63 MidiTrack::~MidiTrack ()
  64 {
  65 }
  66
  67 void
  68 MidiTrack::use_new_diskstream ()
  69 {
  70         MidiDiskstream::Flag dflags = MidiDiskstream::Flag (0);
  71
  72         if (_flags & Hidden) {
  73                 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Hidden);
  74         } else {
  75                 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Recordable);
  76         }
  77
  78         assert(_mode != Destructive);
  79
  80         boost::shared_ptr<MidiDiskstream> ds (new MidiDiskstream (_session, name(), dflags));
  81         ds->do_refill_with_alloc ();
  82         ds->set_block_size (_session.get_block_size ());
  83
  84         set_diskstream (ds);
  85 }
  86
  87 void
  88 MidiTrack::set_diskstream (boost::shared_ptr<Diskstream> ds)
  89 {
  90         Track::set_diskstream (ds);
  91
  92         _diskstream->set_track (this);
  93         _diskstream->set_destructive (_mode == Destructive);
  94
  95         _diskstream->set_record_enabled (false);
  96         //_diskstream->monitor_input (false);
  97
  98         DiskstreamChanged (); /* EMIT SIGNAL */
  99 }
 100
 101 boost::shared_ptr<MidiDiskstream>
 102 MidiTrack::midi_diskstream() const
 103 {
 104         return boost::dynamic_pointer_cast<MidiDiskstream>(_diskstream);
 105 }
 106
 107 int
 108 MidiTrack::set_state (const XMLNode& node, int version)
 109 {
 110         return _set_state (node, version, true);
 111 }
 112
 113 int
 114 MidiTrack::_set_state (const XMLNode& node, int version, bool call_base)
 115 {
 116         const XMLProperty *prop;
 117         XMLNodeConstIterator iter;
 118
 119         if (Route::_set_state (node, version, call_base)) {
 120                 return -1;
 121         }
 122
 123         // No destructive MIDI tracks (yet?)
 124         _mode = Normal;
 125
 126         if ((prop = node.property (X_("note-mode"))) != 0) {
 127                 _note_mode = NoteMode (string_2_enum (prop->value(), _note_mode));
 128         } else {
 129                 _note_mode = Sustained;
 130         }
 131
 132         if ((prop = node.property ("midi-thru")) != 0) {
 133                 set_midi_thru (prop->value() == "yes");
 134         }
 135
 136         if ((prop = node.property ("default-channel")) != 0) {
 137                 set_default_channel ((uint8_t) atoi (prop->value()));
 138         }
 139
 140         XMLNodeList nlist;
 141         XMLNodeConstIterator niter;
 142         XMLNode *child;
 143
 144         nlist = node.children();
 145         for (niter = nlist.begin(); niter != nlist.end(); ++niter){
 146                 child = *niter;
 147
 148                 if (child->name() == X_("recenable")) {
 149                         _rec_enable_control->set_state (*child, version);
 150                         _session.add_controllable (_rec_enable_control);
 151                 }
 152         }
 153
 154         if (version >= 3000) {
 155                 if ((child = find_named_node (node, X_("Diskstream"))) != 0) {
 156                         boost::shared_ptr<MidiDiskstream> ds (new MidiDiskstream (_session, *child));
 157                         ds->do_refill_with_alloc ();
 158                         set_diskstream (ds);
 159                 }
 160         }
 161
 162         pending_state = const_cast<XMLNode*> (&node);
 163
 164         if (_session.state_of_the_state() & Session::Loading) {
 165                 _session.StateReady.connect_same_thread (*this, boost::bind (&MidiTrack::set_state_part_two, this));
 166         } else {
 167                 set_state_part_two ();
 168         }
 169
 170         return 0;
 171 }
 172
 173 XMLNode&
 174 MidiTrack::state(bool full_state)
 175 {
 176         XMLNode& root (Route::state(full_state));
 177         XMLNode* freeze_node;
 178         char buf[64];
 179
 180         if (_freeze_record.playlist) {
 181                 XMLNode* inode;
 182
 183                 freeze_node = new XMLNode (X_("freeze-info"));
 184                 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
 185                 freeze_node->add_property ("state", enum_2_string (_freeze_record.state));
 186
 187                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 188                         inode = new XMLNode (X_("processor"));
 189                         (*i)->id.print (buf, sizeof(buf));
 190                         inode->add_property (X_("id"), buf);
 191                         inode->add_child_copy ((*i)->state);
 192
 193                         freeze_node->add_child_nocopy (*inode);
 194                 }
 195
 196                 root.add_child_nocopy (*freeze_node);
 197         }
 198
 199         root.add_property (X_("note-mode"), enum_2_string (_note_mode));
 200         root.add_child_nocopy (_rec_enable_control->get_state());
 201         root.add_child_nocopy (_diskstream->get_state ());
 202
 203         root.add_property ("step-editing", (_step_editing ? "yes" : "no"));
 204         root.add_property ("note-mode", enum_2_string (_note_mode));
 205         root.add_property ("midi-thru", (_midi_thru ? "yes" : "no"));
 206         snprintf (buf, sizeof (buf), "%d", (int) _default_channel);
 207         root.add_property ("default-channel", buf);
 208
 209         return root;
 210 }
 211
 212 void
 213 MidiTrack::set_state_part_two ()
 214 {
 215         XMLNode* fnode;
 216         XMLProperty* prop;
 217         LocaleGuard lg (X_("POSIX"));
 218
 219         /* This is called after all session state has been restored but before
 220            have been made ports and connections are established.
 221         */
 222
 223         if (pending_state == 0) {
 224                 return;
 225         }
 226
 227         if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
 228
 229                 _freeze_record.state = Frozen;
 230
 231                 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
 232                         delete *i;
 233                 }
 234                 _freeze_record.processor_info.clear ();
 235
 236                 if ((prop = fnode->property (X_("playlist"))) != 0) {
 237                         boost::shared_ptr<Playlist> pl = _session.playlists->by_name (prop->value());
 238                         if (pl) {
 239                                 _freeze_record.playlist = boost::dynamic_pointer_cast<MidiPlaylist> (pl);
 240                         } else {
 241                                 _freeze_record.playlist.reset();
 242                                 _freeze_record.state = NoFreeze;
 243                         return;
 244                         }
 245                 }
 246
 247                 if ((prop = fnode->property (X_("state"))) != 0) {
 248                         _freeze_record.state = FreezeState (string_2_enum (prop->value(), _freeze_record.state));
 249                 }
 250
 251                 XMLNodeConstIterator citer;
 252                 XMLNodeList clist = fnode->children();
 253
 254                 for (citer = clist.begin(); citer != clist.end(); ++citer) {
 255                         if ((*citer)->name() != X_("processor")) {
 256                                 continue;
 257                         }
 258
 259                         if ((prop = (*citer)->property (X_("id"))) == 0) {
 260                                 continue;
 261                         }
 262
 263                         FreezeRecordProcessorInfo* frii = new FreezeRecordProcessorInfo (*((*citer)->children().front()),
 264                                                                                    boost::shared_ptr<Processor>());
 265                         frii->id = prop->value ();
 266                         _freeze_record.processor_info.push_back (frii);
 267                 }
 268         }
 269
 270         if ((fnode = find_named_node (*pending_state, X_("Diskstream"))) != 0) {
 271                 boost::shared_ptr<MidiDiskstream> ds (new MidiDiskstream (_session, *fnode));
 272                 ds->do_refill_with_alloc ();
 273                 ds->set_block_size (_session.get_block_size ());
 274                 set_diskstream (ds);
 275         }
 276
 277         return;
 278 }
 279
 280 int
 281 MidiTrack::roll (nframes_t nframes, framepos_t start_frame, framepos_t end_frame, int declick,
 282                  bool can_record, bool rec_monitors_input, bool& needs_butler)
 283 {
 284         Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
 285         if (!lm.locked()) {
 286                 return 0;
 287         }
 288
 289         int dret;
 290         boost::shared_ptr<MidiDiskstream> diskstream = midi_diskstream();
 291
 292         automation_snapshot (start_frame);
 293
 294         if (n_outputs().n_total() == 0 && _processors.empty()) {
 295                 return 0;
 296         }
 297
 298         if (!_active) {
 299                 silence (nframes);
 300                 return 0;
 301         }
 302
 303         nframes_t transport_frame = _session.transport_frame();
 304
 305
 306         if ((nframes = check_initial_delay (nframes, transport_frame)) == 0) {
 307                 /* need to do this so that the diskstream sets its
 308                    playback distance to zero, thus causing diskstream::commit
 309                    to do nothing.
 310                    */
 311                 return diskstream->process (transport_frame, 0, can_record, rec_monitors_input, needs_butler);
 312         }
 313
 314         _silent = false;
 315
 316         if ((dret = diskstream->process (transport_frame, nframes, can_record, rec_monitors_input, needs_butler)) != 0) {
 317                 silence (nframes);
 318                 return dret;
 319         }
 320
 321         /* special condition applies */
 322
 323         if (_meter_point == MeterInput) {
 324                 _input->process_input (_meter, start_frame, end_frame, nframes);
 325         }
 326
 327         if (diskstream->record_enabled() && !can_record && !_session.config.get_auto_input()) {
 328
 329                 /* not actually recording, but we want to hear the input material anyway,
 330                    at least potentially (depending on monitoring options)
 331                 */
 332
 333                 passthru (start_frame, end_frame, nframes, 0);
 334
 335         } else {
 336                 /*
 337                    XXX is it true that the earlier test on n_outputs()
 338                    means that we can avoid checking it again here? i think
 339                    so, because changing the i/o configuration of an IO
 340                    requires holding the AudioEngine lock, which we hold
 341                    while in the process() tree.
 342                    */
 343
 344
 345                 /* copy the diskstream data to all output buffers */
 346
 347                 //const size_t limit = n_process_buffers().n_audio();
 348                 BufferSet& bufs = _session.get_scratch_buffers (n_process_buffers());
 349                 MidiBuffer& mbuf (bufs.get_midi (0));
 350
 351                 /* we are a MIDI track, so we always start the chain with a single-channel diskstream */
 352                 ChanCount c;
 353                 c.set_audio (0);
 354                 c.set_midi (1);
 355                 bufs.set_count (c);
 356
 357                 diskstream->get_playback (mbuf, start_frame, end_frame);
 358
 359                 /* append immediate messages to the first MIDI buffer (thus sending it to the first output port) */
 360
 361                 write_out_of_band_data (bufs, start_frame, end_frame, nframes);
 362
 363                 process_output_buffers (bufs, start_frame, end_frame, nframes,
 364                                         (!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick);
 365
 366         }
 367
 368         _main_outs->flush (nframes, end_frame - start_frame - 1);
 369
 370         return 0;
 371 }
 372
 373 int
 374 MidiTrack::no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 375                     bool state_changing, bool can_record, bool rec_monitors_input)
 376 {
 377         int ret = Track::no_roll (nframes, start_frame, end_frame, state_changing, can_record, rec_monitors_input);
 378
 379         if (ret == 0 && _diskstream->record_enabled() && _step_editing) {
 380                 push_midi_input_to_step_edit_ringbuffer (nframes);
 381         }
 382
 383         return ret;
 384 }
 385
 386 void
 387 MidiTrack::handle_transport_stopped (bool abort, bool did_locate, bool flush_processors)
 388 {
 389
 390         _main_outs->transport_stopped ();
 391         Route::handle_transport_stopped (abort, did_locate, flush_processors);
 392 }
 393
 394
 395 void
 396 MidiTrack::push_midi_input_to_step_edit_ringbuffer (nframes_t nframes)
 397 {
 398         PortSet& ports (_input->ports());
 399
 400         for (PortSet::iterator p = ports.begin(DataType::MIDI); p != ports.end(DataType::MIDI); ++p) {
 401
 402                 Buffer& b (p->get_buffer (nframes));
 403                 const MidiBuffer* const mb = dynamic_cast<MidiBuffer*>(&b);
 404                 assert (mb);
 405
 406                 for (MidiBuffer::const_iterator e = mb->begin(); e != mb->end(); ++e) {
 407
 408                         const Evoral::MIDIEvent<nframes_t> ev(*e, false);
 409
 410                         /* we don't care about the time for this purpose */
 411
 412                         _step_edit_ring_buffer.write (0, ev.type(), ev.size(), ev.buffer());
 413                 }
 414         }
 415 }
 416
 417 void
 418 MidiTrack::write_out_of_band_data (BufferSet& bufs, sframes_t /*start*/, sframes_t /*end*/, nframes_t nframes)
 419 {
 420         // Append immediate events
 421         MidiBuffer& buf (bufs.get_midi (0));
 422         if (_immediate_events.read_space()) {
 423                 DEBUG_TRACE (DEBUG::MidiIO, string_compose ("%1 has %2 of immediate events to deliver\n",
 424                                                             name(), _immediate_events.read_space()));
 425         }
 426         _immediate_events.read (buf, 0, 1, nframes-1); // all stamps = 0
 427
 428         // MIDI thru: send incoming data "through" output
 429         if (_midi_thru && _session.transport_speed() != 0.0f && _input->n_ports().n_midi()) {
 430                 buf.merge_in_place (_input->midi(0)->get_midi_buffer(nframes));
 431         }
 432 }
 433
 434 int
 435 MidiTrack::export_stuff (BufferSet& /*bufs*/, nframes_t /*nframes*/, sframes_t /*end_frame*/)
 436 {
 437         return -1;
 438 }
 439
 440 void
 441 MidiTrack::set_latency_delay (nframes_t longest_session_latency)
 442 {
 443         Route::set_latency_delay (longest_session_latency);
 444         _diskstream->set_roll_delay (_roll_delay);
 445 }
 446
 447 boost::shared_ptr<Region>
 448 MidiTrack::bounce (InterThreadInfo& /*itt*/)
 449 {
 450         throw;
 451         // vector<MidiSource*> srcs;
 452         // return _session.write_one_track (*this, 0, _session.current_end_frame(), false, srcs, itt);
 453         return boost::shared_ptr<Region> ();
 454 }
 455
 456
 457 boost::shared_ptr<Region>
 458 MidiTrack::bounce_range (nframes_t /*start*/, nframes_t /*end*/, InterThreadInfo& /*itt*/, bool /*enable_processing*/)
 459 {
 460         throw;
 461         //vector<MidiSource*> srcs;
 462         //return _session.write_one_track (*this, start, end, false, srcs, itt);
 463         return boost::shared_ptr<Region> ();
 464 }
 465
 466 void
 467 MidiTrack::freeze_me (InterThreadInfo& /*itt*/)
 468 {
 469 }
 470
 471 void
 472 MidiTrack::unfreeze ()
 473 {
 474         _freeze_record.state = UnFrozen;
 475         FreezeChange (); /* EMIT SIGNAL */
 476 }
 477
 478 void
 479 MidiTrack::set_note_mode (NoteMode m)
 480 {
 481         _note_mode = m;
 482         midi_diskstream()->set_note_mode(m);
 483 }
 484
 485 void
 486 MidiTrack::midi_panic()
 487 {
 488         DEBUG_TRACE (DEBUG::MidiIO, string_compose ("%1 delivers panic data\n", name()));
 489         for (uint8_t channel = 0; channel <= 0xF; channel++) {
 490                 uint8_t ev[3] = { MIDI_CMD_CONTROL | channel, MIDI_CTL_SUSTAIN, 0 };
 491                 write_immediate_event(3, ev);
 492                 ev[1] = MIDI_CTL_ALL_NOTES_OFF;
 493                 write_immediate_event(3, ev);
 494                 ev[1] = MIDI_CTL_RESET_CONTROLLERS;
 495                 write_immediate_event(3, ev);
 496         }
 497 }
 498
 499 /** \return true on success, false on failure (no buffer space left)
 500  */
 501 bool
 502 MidiTrack::write_immediate_event(size_t size, const uint8_t* buf)
 503 {
 504         if (!Evoral::midi_event_is_valid(buf, size)) {
 505                 cerr << "WARNING: Ignoring illegal immediate MIDI event" << endl;
 506                 return false;
 507         }
 508         const uint32_t type = EventTypeMap::instance().midi_event_type(buf[0]);
 509         return (_immediate_events.write(0, type, size, buf) == size);
 510 }
 511
 512 void
 513 MidiTrack::MidiControl::set_value(float val)
 514 {
 515         bool valid = false;
 516         if (isinf(val)) {
 517                 cerr << "MIDIControl value is infinity" << endl;
 518         } else if (isnan(val)) {
 519                 cerr << "MIDIControl value is NaN" << endl;
 520         } else if (val < _list->parameter().min()) {
 521                 cerr << "MIDIControl value is < " << _list->parameter().min() << endl;
 522         } else if (val > _list->parameter().max()) {
 523                 cerr << "MIDIControl value is > " << _list->parameter().max() << endl;
 524         } else {
 525                 valid = true;
 526         }
 527
 528         if (!valid) {
 529                 return;
 530         }
 531
 532         assert(val <= _list->parameter().max());
 533         if ( ! automation_playback()) {
 534                 size_t size = 3;
 535                 uint8_t ev[3] = { _list->parameter().channel(), int(val), 0 };
 536                 switch(_list->parameter().type()) {
 537                 case MidiCCAutomation:
 538                         ev[0] += MIDI_CMD_CONTROL;
 539                         ev[1] = _list->parameter().id();
 540                         ev[2] = int(val);
 541                         break;
 542
 543                 case MidiPgmChangeAutomation:
 544                         size = 2;
 545                         ev[0] += MIDI_CMD_PGM_CHANGE;
 546                         ev[1] = int(val);
 547                         break;
 548
 549                 case MidiChannelPressureAutomation:
 550                         size = 2;
 551                         ev[0] += MIDI_CMD_CHANNEL_PRESSURE;
 552                         ev[1] = int(val);
 553                         break;
 554
 555                 case MidiPitchBenderAutomation:
 556                         ev[0] += MIDI_CMD_BENDER;
 557                         ev[1] = 0x7F & int(val);
 558                         ev[2] = 0x7F & (int(val) >> 7);
 559                         break;
 560
 561                 default:
 562                         assert(false);
 563                 }
 564                 _route->write_immediate_event(size,  ev);
 565         }
 566
 567         AutomationControl::set_value(val);
 568 }
 569
 570 void
 571 MidiTrack::set_step_editing (bool yn)
 572 {
 573         cerr << name() << " IS NOW STEP EDITING\n";
 574         _step_editing = yn;
 575 }
 576
 577 void
 578 MidiTrack::set_default_channel (uint8_t chn)
 579 {
 580         _default_channel = std::min ((unsigned int) chn, 15U);
 581 }
 582
 583 void
 584 MidiTrack::set_midi_thru (bool yn)
 585 {
 586         _midi_thru = yn;
 587 }
 588
 589 boost::shared_ptr<SMFSource>
 590 MidiTrack::write_source (uint32_t n)
 591 {
 592         return midi_diskstream()->write_source ();
 593 }
 594
 595 void
 596 MidiTrack::set_channel_mode (ChannelMode mode, uint16_t mask)
 597 {
 598         midi_diskstream()->set_channel_mode (mode, mask);
 599 }
 600
 601 ChannelMode
 602 MidiTrack::get_channel_mode ()
 603 {
 604         return midi_diskstream()->get_channel_mode ();
 605 }
 606
 607 uint16_t
 608 MidiTrack::get_channel_mask ()
 609 {
 610         return midi_diskstream()->get_channel_mask ();
 611 }
 612
 613 boost::shared_ptr<MidiPlaylist>
 614 MidiTrack::midi_playlist ()
 615 {
 616         return midi_diskstream()->midi_playlist ();
 617 }