libs/ardour/delivery.cc

   1 /*
   2     Copyright (C) 2009 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify it
   5     under the terms of the GNU General Public License as published by the Free
   6     Software Foundation; either version 2 of the License, or (at your option)
   7     any later version.
   8
   9     This program is distributed in the hope that it will be useful, but WITHOUT
  10     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12     for more details.
  13
  14     You should have received a copy of the GNU General Public License along
  15     with this program; if not, write to the Free Software Foundation, Inc.,
  16     675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20 #include <algorithm>
  21
  22 #include "pbd/enumwriter.h"
  23 #include "pbd/convert.h"
  24
  25 #include "ardour/midi_buffer.h"
  26
  27 #include "ardour/debug.h"
  28 #include "ardour/delivery.h"
  29 #include "ardour/audio_buffer.h"
  30 #include "ardour/audio_port.h"
  31 #include "ardour/amp.h"
  32 #include "ardour/buffer_set.h"
  33 #include "ardour/configuration.h"
  34 #include "ardour/io.h"
  35 #include "ardour/meter.h"
  36 #include "ardour/mute_master.h"
  37 #include "ardour/panner.h"
  38 #include "ardour/panner_shell.h"
  39 #include "ardour/pannable.h"
  40 #include "ardour/port.h"
  41 #include "ardour/session.h"
  42 #include "ardour/audioengine.h"
  43
  44 #include "i18n.h"
  45
  46 using namespace std;
  47 using namespace PBD;
  48 using namespace ARDOUR;
  49
  50 PBD::Signal1<void, pframes_t> Delivery::CycleStart;
  51 PBD::Signal0<int>             Delivery::PannersLegal;
  52 bool                          Delivery::panners_legal = false;
  53
  54 /* deliver to an existing IO object */
  55
  56 Delivery::Delivery (Session& s, boost::shared_ptr<IO> io, boost::shared_ptr<Pannable> pannable,
  57                     boost::shared_ptr<MuteMaster> mm, const string& name, Role r)
  58         : IOProcessor(s, boost::shared_ptr<IO>(), (role_requires_output_ports (r) ? io : boost::shared_ptr<IO>()), name)
  59         , _role (r)
  60         , _output_buffers (new BufferSet())
  61         , _current_gain (1.0)
  62         , _no_outs_cuz_we_no_monitor (false)
  63         , _mute_master (mm)
  64         , no_panner_reset (false)
  65         , scnt (0)
  66 {
  67         if (pannable) {
  68                 _panshell = boost::shared_ptr<PannerShell>(new PannerShell (_name, _session, pannable));
  69         }
  70
  71         _display_to_user = false;
  72
  73         if (_output) {
  74                 _output->changed.connect_same_thread (*this, boost::bind (&Delivery::output_changed, this, _1, _2));
  75         }
  76
  77         CycleStart.connect_same_thread (*this, boost::bind (&Delivery::cycle_start, this, _1));
  78 }
  79
  80 /* deliver to a new IO object */
  81
  82 Delivery::Delivery (Session& s, boost::shared_ptr<Pannable> pannable, boost::shared_ptr<MuteMaster> mm, const string& name, Role r)
  83         : IOProcessor(s, false, (role_requires_output_ports (r) ? true : false), name)
  84         , _role (r)
  85         , _output_buffers (new BufferSet())
  86         , _current_gain (1.0)
  87         , _no_outs_cuz_we_no_monitor (false)
  88         , _mute_master (mm)
  89         , no_panner_reset (false)
  90         , scnt (0)
  91 {
  92         if (pannable) {
  93                 _panshell = boost::shared_ptr<PannerShell>(new PannerShell (_name, _session, pannable));
  94         }
  95
  96         _display_to_user = false;
  97
  98         if (_output) {
  99                 _output->changed.connect_same_thread (*this, boost::bind (&Delivery::output_changed, this, _1, _2));
 100         }
 101
 102         CycleStart.connect_same_thread (*this, boost::bind (&Delivery::cycle_start, this, _1));
 103 }
 104
 105
 106 Delivery::~Delivery()
 107 {
 108         DEBUG_TRACE (DEBUG::Destruction, string_compose ("delivery %1 destructor\n", _name));
 109         delete _output_buffers;
 110 }
 111
 112 std::string
 113 Delivery::display_name () const
 114 {
 115         switch (_role) {
 116         case Main:
 117                 return _("main outs");
 118                 break;
 119         case Listen:
 120                 return _("listen");
 121                 break;
 122         case Send:
 123         case Insert:
 124         default:
 125                 return name();
 126         }
 127 }
 128
 129 void
 130 Delivery::cycle_start (pframes_t /*nframes*/)
 131 {
 132         _no_outs_cuz_we_no_monitor = false;
 133 }
 134
 135 bool
 136 Delivery::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
 137 {
 138         if (_role == Main) {
 139
 140                 /* the out buffers will be set to point to the port output buffers
 141                    of our output object.
 142                 */
 143
 144                 if (_output) {
 145                         if (_output->n_ports() != ChanCount::ZERO) {
 146                                 /* increase number of output ports if the processor chain requires it */
 147                                 out = ChanCount::max (_output->n_ports(), in);
 148                                 return true;
 149                         } else {
 150                                 /* not configured yet - we will passthru */
 151                                 out = in;
 152                                 return true;
 153                         }
 154                 } else {
 155                         fatal << "programming error: this should never be reached" << endmsg;
 156                         /*NOTREACHED*/
 157                 }
 158
 159
 160         } else if (_role == Insert) {
 161
 162                 /* the output buffers will be filled with data from the *input* ports
 163                    of this Insert.
 164                 */
 165
 166                 if (_input) {
 167                         if (_input->n_ports() != ChanCount::ZERO) {
 168                                 out = _input->n_ports();
 169                                 return true;
 170                         } else {
 171                                 /* not configured yet - we will passthru */
 172                                 out = in;
 173                                 return true;
 174                         }
 175                 } else {
 176                         fatal << "programming error: this should never be reached" << endmsg;
 177                         /*NOTREACHED*/
 178                 }
 179
 180         } else {
 181                 fatal << "programming error: this should never be reached" << endmsg;
 182         }
 183
 184         return false;
 185 }
 186
 187 /** Caller must hold process lock */
 188 bool
 189 Delivery::configure_io (ChanCount in, ChanCount out)
 190 {
 191         assert (!AudioEngine::instance()->process_lock().trylock());
 192
 193         /* check configuration by comparison with our I/O port configuration, if appropriate.
 194            see ::can_support_io_configuration() for comments
 195         */
 196
 197         if (_role == Main) {
 198
 199                 if (_output) {
 200                         if (_output->n_ports() != out) {
 201                                 if (_output->n_ports() != ChanCount::ZERO) {
 202                                         _output->ensure_io (out, false, this);
 203                                 } else {
 204                                         /* I/O not yet configured */
 205                                 }
 206                         }
 207                 }
 208
 209         } else if (_role == Insert) {
 210
 211                 if (_input) {
 212                         if (_input->n_ports() != in) {
 213                                 if (_input->n_ports() != ChanCount::ZERO) {
 214                                         fatal << _name << " programming error: configure_io called with " << in << " and " << out << " with " << _input->n_ports() << " input ports" << endmsg;
 215                                         /*NOTREACHED*/
 216                                 } else {
 217                                         /* I/O not yet configured */
 218                                 }
 219                         }
 220                 }
 221
 222         }
 223
 224         if (!Processor::configure_io (in, out)) {
 225                 return false;
 226         }
 227
 228         reset_panner ();
 229
 230         return true;
 231 }
 232
 233 void
 234 Delivery::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool result_required)
 235 {
 236         assert (_output);
 237
 238         PortSet& ports (_output->ports());
 239         gain_t tgain;
 240
 241         if (_output->n_ports ().get (_output->default_type()) == 0) {
 242                 goto out;
 243         }
 244
 245         if (!_active && !_pending_active) {
 246                 _output->silence (nframes);
 247                 goto out;
 248         }
 249
 250         /* this setup is not just for our purposes, but for anything that comes after us in the
 251            processing pathway that wants to use this->output_buffers() for some reason.
 252         */
 253
 254         output_buffers().get_jack_port_addresses (ports, nframes);
 255
 256         // this Delivery processor is not a derived type, and thus we assume
 257         // we really can modify the buffers passed in (it is almost certainly
 258         // the main output stage of a Route). Contrast with Send::run()
 259         // which cannot do this.
 260
 261         tgain = target_gain ();
 262
 263         if (tgain != _current_gain) {
 264                 /* target gain has changed */
 265
 266                 Amp::apply_gain (bufs, nframes, _current_gain, tgain);
 267                 _current_gain = tgain;
 268
 269         } else if (tgain == 0.0) {
 270
 271                 /* we were quiet last time, and we're still supposed to be quiet.
 272                    Silence the outputs, and make sure the buffers are quiet too,
 273                 */
 274
 275                 _output->silence (nframes);
 276                 if (result_required) {
 277                         bufs.set_count (output_buffers().count ());
 278                         Amp::apply_simple_gain (bufs, nframes, 0.0);
 279                 }
 280                 goto out;
 281
 282         } else if (tgain != 1.0) {
 283
 284                 /* target gain has not changed, but is not unity */
 285                 Amp::apply_simple_gain (bufs, nframes, tgain);
 286         }
 287
 288         if (_panshell && !_panshell->bypassed() && _panshell->panner()) {
 289
 290                 // Use the panner to distribute audio to output port buffers
 291
 292                 _panshell->run (bufs, output_buffers(), start_frame, end_frame, nframes);
 293
 294
 295         } else {
 296
 297                 // Do a 1:1 copy of data to output ports
 298
 299                 if (bufs.count().n_audio() > 0 && ports.count().n_audio () > 0) {
 300                         _output->copy_to_outputs (bufs, DataType::AUDIO, nframes, 0);
 301                 }
 302
 303                 if (bufs.count().n_midi() > 0 && ports.count().n_midi () > 0) {
 304                         _output->copy_to_outputs (bufs, DataType::MIDI, nframes, 0);
 305                 }
 306         }
 307
 308         if (result_required) {
 309                 bufs.read_from (output_buffers (), nframes);
 310         }
 311
 312   out:
 313         _active = _pending_active;
 314 }
 315
 316 XMLNode&
 317 Delivery::state (bool full_state)
 318 {
 319         XMLNode& node (IOProcessor::state (full_state));
 320
 321         if (_role & Main) {
 322                 node.add_property("type", "main-outs");
 323         } else if (_role & Listen) {
 324                 node.add_property("type", "listen");
 325         } else {
 326                 node.add_property("type", "delivery");
 327         }
 328
 329         node.add_property("role", enum_2_string(_role));
 330
 331         if (_panshell) {
 332                 node.add_child_nocopy (_panshell->get_state ());
 333         }
 334
 335         return node;
 336 }
 337
 338 int
 339 Delivery::set_state (const XMLNode& node, int version)
 340 {
 341         const XMLProperty* prop;
 342
 343         if (IOProcessor::set_state (node, version)) {
 344                 return -1;
 345         }
 346
 347         if ((prop = node.property ("role")) != 0) {
 348                 _role = Role (string_2_enum (prop->value(), _role));
 349                 // std::cerr << this << ' ' << _name << " set role to " << enum_2_string (_role) << std::endl;
 350         } else {
 351                 // std::cerr << this << ' ' << _name << " NO ROLE INFO\n";
 352         }
 353
 354         XMLNode* pan_node = node.child (X_("PannerShell"));
 355
 356         if (pan_node && _panshell) {
 357                 _panshell->set_state (*pan_node, version);
 358         }
 359
 360         reset_panner ();
 361
 362         return 0;
 363 }
 364
 365 void
 366 Delivery::unpan ()
 367 {
 368         /* caller must hold process lock */
 369
 370         _panshell.reset ();
 371 }
 372
 373 void
 374 Delivery::reset_panner ()
 375 {
 376         if (panners_legal) {
 377                 if (!no_panner_reset) {
 378
 379                         uint32_t ntargets;
 380
 381                         if (_output) {
 382                                 ntargets = _output->n_ports().n_audio();
 383                         } else {
 384                                 ntargets = _configured_output.n_audio();
 385                         }
 386
 387                         if (_panshell) {
 388                                 _panshell->configure_io (ChanCount (DataType::AUDIO, pans_required()), ChanCount (DataType::AUDIO, ntargets));
 389
 390                                 if (_role == Main) {
 391                                         _panshell->pannable()->set_panner (_panshell->panner());
 392                                 }
 393                         }
 394                 }
 395
 396         } else {
 397                 panner_legal_c.disconnect ();
 398                 PannersLegal.connect_same_thread (panner_legal_c, boost::bind (&Delivery::panners_became_legal, this));
 399         }
 400 }
 401
 402 int
 403 Delivery::panners_became_legal ()
 404 {
 405         uint32_t ntargets;
 406
 407         if (_output) {
 408                 ntargets = _output->n_ports().n_audio();
 409         } else {
 410                 ntargets = _configured_output.n_audio();
 411         }
 412
 413         if (_panshell) {
 414                 _panshell->configure_io (ChanCount (DataType::AUDIO, pans_required()), ChanCount (DataType::AUDIO, ntargets));
 415
 416                 if (_role == Main) {
 417                         _panshell->pannable()->set_panner (_panshell->panner());
 418                 }
 419         }
 420
 421         panner_legal_c.disconnect ();
 422         return 0;
 423 }
 424
 425 void
 426 Delivery::defer_pan_reset ()
 427 {
 428         no_panner_reset = true;
 429 }
 430
 431 void
 432 Delivery::allow_pan_reset ()
 433 {
 434         no_panner_reset = false;
 435         reset_panner ();
 436 }
 437
 438
 439 int
 440 Delivery::disable_panners (void)
 441 {
 442         panners_legal = false;
 443         return 0;
 444 }
 445
 446 int
 447 Delivery::reset_panners ()
 448 {
 449         panners_legal = true;
 450         return *PannersLegal ();
 451 }
 452
 453 void
 454 Delivery::flush_buffers (framecnt_t nframes, framepos_t time)
 455 {
 456         /* io_lock, not taken: function must be called from Session::process() calltree */
 457
 458         PortSet& ports (_output->ports());
 459
 460         for (PortSet::iterator i = ports.begin(); i != ports.end(); ++i) {
 461                 (*i).flush_buffers (nframes, time);
 462         }
 463 }
 464
 465 void
 466 Delivery::transport_stopped (framepos_t now)
 467 {
 468         Processor::transport_stopped (now);
 469
 470         if (_panshell) {
 471                 _panshell->pannable()->transport_stopped (now);
 472         }
 473
 474         if (_output) {
 475                 PortSet& ports (_output->ports());
 476
 477                 for (PortSet::iterator i = ports.begin(); i != ports.end(); ++i) {
 478                         (*i).transport_stopped ();
 479                 }
 480         }
 481 }
 482
 483 void
 484 Delivery::realtime_locate ()
 485 {
 486         if (_output) {
 487                 PortSet& ports (_output->ports());
 488
 489                 for (PortSet::iterator i = ports.begin(); i != ports.end(); ++i) {
 490                         (*i).realtime_locate ();
 491                 }
 492         }
 493 }
 494
 495 gain_t
 496 Delivery::target_gain ()
 497 {
 498         /* if we've been requested to deactivate, our target gain is zero */
 499
 500         if (!_pending_active) {
 501                 return 0.0;
 502         }
 503
 504         /* if we've been told not to output because its a monitoring situation and
 505            we're not monitoring, then be quiet.
 506         */
 507
 508         if (_no_outs_cuz_we_no_monitor) {
 509                 return 0.0;
 510         }
 511
 512         MuteMaster::MutePoint mp = MuteMaster::Main; // stupid gcc uninit warning
 513
 514         switch (_role) {
 515         case Main:
 516                 mp = MuteMaster::Main;
 517                 break;
 518         case Listen:
 519                 mp = MuteMaster::Listen;
 520                 break;
 521         case Send:
 522         case Insert:
 523         case Aux:
 524                 if (_pre_fader) {
 525                         mp = MuteMaster::PreFader;
 526                 } else {
 527                         mp = MuteMaster::PostFader;
 528                 }
 529                 break;
 530         }
 531
 532         gain_t desired_gain = _mute_master->mute_gain_at (mp);
 533
 534         if (_role == Listen && _session.monitor_out() && !_session.listening()) {
 535
 536                 /* nobody is soloed, and this delivery is a listen-send to the
 537                    control/monitor/listen bus, we should be silent since
 538                    it gets its signal from the master out.
 539                 */
 540
 541                 desired_gain = 0.0;
 542
 543         }
 544
 545         return desired_gain;
 546 }
 547
 548 void
 549 Delivery::no_outs_cuz_we_no_monitor (bool yn)
 550 {
 551         _no_outs_cuz_we_no_monitor = yn;
 552 }
 553
 554 bool
 555 Delivery::set_name (const std::string& name)
 556 {
 557         bool ret = IOProcessor::set_name (name);
 558
 559         if (ret) {
 560                 ret = _panshell->set_name (name);
 561         }
 562
 563         return ret;
 564 }
 565
 566 void
 567 Delivery::output_changed (IOChange change, void* /*src*/)
 568 {
 569         if (change.type & IOChange::ConfigurationChanged) {
 570                 reset_panner ();
 571                 _output_buffers->attach_buffers (_output->ports ());
 572         }
 573 }
 574
 575 boost::shared_ptr<Panner>
 576 Delivery::panner () const
 577 {
 578         if (_panshell) {
 579                 return _panshell->panner();
 580         } else {
 581                 return boost::shared_ptr<Panner>();
 582         }
 583 }
 584