libs/ardour/plugin_insert.cc

   1 /*
   2     Copyright (C) 2000 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 #ifdef WAF_BUILD
  21 #include "libardour-config.h"
  22 #endif
  23
  24 #include <string>
  25
  26
  27 #include "pbd/failed_constructor.h"
  28 #include "pbd/xml++.h"
  29
  30 #include "ardour/audio_buffer.h"
  31 #include "ardour/automation_list.h"
  32 #include "ardour/buffer_set.h"
  33 #include "ardour/event_type_map.h"
  34 #include "ardour/ladspa_plugin.h"
  35 #include "ardour/plugin.h"
  36 #include "ardour/plugin_insert.h"
  37 #include "ardour/port.h"
  38 #include "ardour/route.h"
  39
  40 #ifdef HAVE_SLV2
  41 #include "ardour/lv2_plugin.h"
  42 #endif
  43
  44 #ifdef VST_SUPPORT
  45 #include "ardour/vst_plugin.h"
  46 #endif
  47
  48 #ifdef HAVE_AUDIOUNITS
  49 #include "ardour/audio_unit.h"
  50 #endif
  51
  52 #include "ardour/audioengine.h"
  53 #include "ardour/session.h"
  54 #include "ardour/types.h"
  55
  56 #include "i18n.h"
  57
  58 using namespace std;
  59 using namespace ARDOUR;
  60 using namespace PBD;
  61
  62 const string PluginInsert::port_automation_node_name = "PortAutomation";
  63
  64 PluginInsert::PluginInsert (Session& s, boost::shared_ptr<Plugin> plug)
  65         : Processor (s, (plug ? plug->name() : string ("toBeRenamed")))
  66         , _signal_analysis_collected_nframes(0)
  67         , _signal_analysis_collect_nframes_max(0)
  68 {
  69         /* the first is the master */
  70
  71         if (plug) {
  72                 _plugins.push_back (plug);
  73                 set_automatable ();
  74
  75                 Glib::Mutex::Lock em (_session.engine().process_lock());
  76                 IO::PortCountChanged (max(input_streams(), output_streams()));
  77         }
  78 }
  79
  80 bool
  81 PluginInsert::set_count (uint32_t num)
  82 {
  83         bool require_state = !_plugins.empty();
  84
  85         /* this is a bad idea.... we shouldn't do this while active.
  86            only a route holding their redirect_lock should be calling this
  87         */
  88
  89         if (num == 0) {
  90                 return false;
  91         } else if (num > _plugins.size()) {
  92                 uint32_t diff = num - _plugins.size();
  93
  94                 for (uint32_t n = 0; n < diff; ++n) {
  95                         _plugins.push_back (plugin_factory (_plugins[0]));
  96
  97                         if (require_state) {
  98                                 /* XXX do something */
  99                         }
 100                 }
 101
 102         } else if (num < _plugins.size()) {
 103                 uint32_t diff = _plugins.size() - num;
 104                 for (uint32_t n= 0; n < diff; ++n) {
 105                         _plugins.pop_back();
 106                 }
 107         }
 108
 109         return true;
 110 }
 111
 112 PluginInsert::~PluginInsert ()
 113 {
 114 }
 115
 116 void
 117 PluginInsert::auto_state_changed (Evoral::Parameter which)
 118 {
 119         if (which.type() != PluginAutomation)
 120                 return;
 121
 122         boost::shared_ptr<AutomationControl> c
 123                         = boost::dynamic_pointer_cast<AutomationControl>(control (which));
 124
 125         if (c && ((AutomationList*)c->list().get())->automation_state() != Off) {
 126                 _plugins[0]->set_parameter (which.id(), c->list()->eval (_session.transport_frame()));
 127         }
 128 }
 129
 130 ChanCount
 131 PluginInsert::output_streams() const
 132 {
 133         ChanCount out = _plugins.front()->get_info()->n_outputs;
 134
 135         if (out == ChanCount::INFINITE) {
 136                 return _plugins.front()->output_streams ();
 137         } else {
 138                 out.set_audio (out.n_audio() * _plugins.size());
 139                 out.set_midi (out.n_midi() * _plugins.size());
 140                 return out;
 141         }
 142 }
 143
 144 ChanCount
 145 PluginInsert::input_streams() const
 146 {
 147         ChanCount in = _plugins[0]->get_info()->n_inputs;
 148
 149         if (in == ChanCount::INFINITE) {
 150                 return _plugins[0]->input_streams ();
 151         } else {
 152                 in.set_audio (in.n_audio() * _plugins.size());
 153                 in.set_midi (in.n_midi() * _plugins.size());
 154                 return in;
 155         }
 156 }
 157
 158 ChanCount
 159 PluginInsert::natural_output_streams() const
 160 {
 161         return _plugins[0]->get_info()->n_outputs;
 162 }
 163
 164 ChanCount
 165 PluginInsert::natural_input_streams() const
 166 {
 167         return _plugins[0]->get_info()->n_inputs;
 168 }
 169
 170 bool
 171 PluginInsert::is_generator() const
 172 {
 173         /* XXX more finesse is possible here. VST plugins have a
 174            a specific "instrument" flag, for example.
 175          */
 176
 177         return _plugins[0]->get_info()->n_inputs.n_audio() == 0;
 178 }
 179
 180 void
 181 PluginInsert::set_automatable ()
 182 {
 183         set<Evoral::Parameter> a = _plugins.front()->automatable ();
 184
 185         Plugin::ParameterDescriptor desc;
 186
 187         for (set<Evoral::Parameter>::iterator i = a.begin(); i != a.end(); ++i) {
 188                 if (i->type() == PluginAutomation) {
 189
 190                         Evoral::Parameter param(*i);
 191
 192                         _plugins.front()->get_parameter_descriptor(i->id(), desc);
 193
 194                         /* the Parameter belonging to the actual plugin doesn't have its range set
 195                            but we want the Controllable related to this Parameter to have those limits.
 196                         */
 197
 198                         param.set_range (desc.lower, desc.upper, _plugins.front()->default_value(i->id()));
 199                         can_automate (param);
 200                         boost::shared_ptr<AutomationList> list(new AutomationList(param));
 201                         add_control (boost::shared_ptr<AutomationControl>(new PluginControl(this, param, list)));
 202                 }
 203         }
 204 }
 205
 206 void
 207 PluginInsert::parameter_changed (Evoral::Parameter which, float val)
 208 {
 209         if (which.type() != PluginAutomation)
 210                 return;
 211
 212         Plugins::iterator i = _plugins.begin();
 213
 214         /* don't set the first plugin, just all the slaves */
 215
 216         if (i != _plugins.end()) {
 217                 ++i;
 218                 for (; i != _plugins.end(); ++i) {
 219                         (*i)->set_parameter (which, val);
 220                 }
 221         }
 222 }
 223
 224 void
 225 PluginInsert::set_block_size (nframes_t nframes)
 226 {
 227         for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 228                 (*i)->set_block_size (nframes);
 229         }
 230 }
 231
 232 void
 233 PluginInsert::activate ()
 234 {
 235         Processor::activate ();
 236
 237         for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 238                 (*i)->activate ();
 239         }
 240 }
 241
 242 void
 243 PluginInsert::deactivate ()
 244 {
 245         Processor::deactivate ();
 246
 247         for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 248                 (*i)->deactivate ();
 249         }
 250 }
 251
 252 void
 253 PluginInsert::connect_and_run (BufferSet& bufs, nframes_t nframes, nframes_t offset, bool with_auto, nframes_t now)
 254 {
 255         // Calculate if, and how many frames we need to collect for analysis
 256         nframes_t collect_signal_nframes = (_signal_analysis_collect_nframes_max -
 257                                             _signal_analysis_collected_nframes);
 258         if (nframes < collect_signal_nframes) { // we might not get all frames now
 259                 collect_signal_nframes = nframes;
 260         }
 261
 262         ChanMapping in_map(input_streams());
 263         ChanMapping out_map(output_streams());
 264
 265         /* Note that we've already required that plugins
 266            be able to handle in-place processing.
 267         */
 268
 269         if (with_auto) {
 270
 271                 uint32_t n = 0;
 272
 273                 for (Controls::iterator li = controls().begin(); li != controls().end(); ++li, ++n) {
 274
 275                         boost::shared_ptr<AutomationControl> c
 276                                 = boost::dynamic_pointer_cast<AutomationControl>(li->second);
 277
 278                         if (c->parameter().type() == PluginAutomation && c->automation_playback()) {
 279                                 bool valid;
 280
 281                                 const float val = c->list()->rt_safe_eval (now, valid);
 282
 283                                 if (valid) {
 284                                         c->set_value(val);
 285                                 }
 286
 287                         }
 288                 }
 289         }
 290
 291         if (collect_signal_nframes > 0) {
 292                 // collect input
 293                 //std::cerr << "collect input, bufs " << bufs.count().n_audio() << " count,  " << bufs.available().n_audio() << " available" << std::endl;
 294                 //std::cerr << "               streams " << input_streams().n_audio() << std::endl;
 295                 //std::cerr << "filling buffer with " << collect_signal_nframes << " frames at " << _signal_analysis_collected_nframes << std::endl;
 296
 297                 _signal_analysis_inputs.set_count(input_streams());
 298
 299                 for (uint32_t i = 0; i < input_streams().n_audio(); ++i) {
 300                         _signal_analysis_inputs.get_audio(i).read_from(
 301                                 bufs.get_audio(i),
 302                                 collect_signal_nframes,
 303                                 _signal_analysis_collected_nframes); // offset is for target buffer
 304                 }
 305
 306         }
 307
 308         for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 309                 (*i)->connect_and_run(bufs, in_map, out_map, nframes, offset);
 310                 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
 311                         in_map.offset_to(*t, natural_input_streams().get(*t));
 312                         out_map.offset_to(*t, natural_output_streams().get(*t));
 313                 }
 314         }
 315
 316         if (collect_signal_nframes > 0) {
 317                 // collect output
 318                 //std::cerr << "       output, bufs " << bufs.count().n_audio() << " count,  " << bufs.available().n_audio() << " available" << std::endl;
 319                 //std::cerr << "               streams " << output_streams().n_audio() << std::endl;
 320
 321                 _signal_analysis_outputs.set_count(output_streams());
 322
 323                 for (uint32_t i = 0; i < output_streams().n_audio(); ++i) {
 324                         _signal_analysis_outputs.get_audio(i).read_from(
 325                                 bufs.get_audio(i),
 326                                 collect_signal_nframes,
 327                                 _signal_analysis_collected_nframes); // offset is for target buffer
 328                 }
 329
 330                 _signal_analysis_collected_nframes += collect_signal_nframes;
 331                 assert(_signal_analysis_collected_nframes <= _signal_analysis_collect_nframes_max);
 332
 333                 if (_signal_analysis_collected_nframes == _signal_analysis_collect_nframes_max) {
 334                         _signal_analysis_collect_nframes_max = 0;
 335                         _signal_analysis_collected_nframes   = 0;
 336
 337                         AnalysisDataGathered(&_signal_analysis_inputs,
 338                                              &_signal_analysis_outputs);
 339                 }
 340         }
 341         /* leave remaining channel buffers alone */
 342 }
 343
 344 void
 345 PluginInsert::silence (nframes_t nframes)
 346 {
 347         ChanMapping in_map(input_streams());
 348         ChanMapping out_map(output_streams());
 349
 350         if (active()) {
 351                 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 352                         (*i)->connect_and_run (_session.get_silent_buffers ((*i)->get_info()->n_inputs), in_map, out_map, nframes, 0);
 353                 }
 354         }
 355 }
 356
 357 void
 358 PluginInsert::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes, bool)
 359 {
 360         if (_active || _pending_active) {
 361
 362                 if (_session.transport_rolling()) {
 363                         automation_run (bufs, nframes);
 364                 } else {
 365                         connect_and_run (bufs, nframes, 0, false);
 366                 }
 367
 368         } else {
 369
 370                 /* FIXME: type, audio only */
 371
 372                 uint32_t in = _plugins[0]->get_info()->n_inputs.n_audio();
 373                 uint32_t out = _plugins[0]->get_info()->n_outputs.n_audio();
 374
 375                 if (out > in) {
 376
 377                         /* not active, but something has make up for any channel count increase */
 378
 379                         for (uint32_t n = out - in; n < out; ++n) {
 380                                 memcpy (bufs.get_audio(n).data(), bufs.get_audio(in - 1).data(), sizeof (Sample) * nframes);
 381                         }
 382                 }
 383
 384                 bufs.count().set_audio(out);
 385         }
 386
 387         _active = _pending_active;
 388 }
 389
 390 void
 391 PluginInsert::set_parameter (Evoral::Parameter param, float val)
 392 {
 393         if (param.type() != PluginAutomation)
 394                 return;
 395
 396         /* the others will be set from the event triggered by this */
 397
 398         _plugins[0]->set_parameter (param.id(), val);
 399
 400         boost::shared_ptr<AutomationControl> ac
 401                         = boost::dynamic_pointer_cast<AutomationControl>(control(param));
 402
 403         if (ac) {
 404                 ac->set_value(val);
 405         } else {
 406                 warning << "set_parameter called for nonexistant parameter "
 407                         << EventTypeMap::instance().to_symbol(param) << endmsg;
 408         }
 409
 410         _session.set_dirty();
 411 }
 412
 413 float
 414 PluginInsert::get_parameter (Evoral::Parameter param)
 415 {
 416         if (param.type() != PluginAutomation) {
 417                 return 0.0;
 418         } else {
 419                 assert (!_plugins.empty ());
 420                 return _plugins[0]->get_parameter (param.id());
 421         }
 422 }
 423
 424 void
 425 PluginInsert::automation_run (BufferSet& bufs, nframes_t nframes)
 426 {
 427         Evoral::ControlEvent next_event (0, 0.0f);
 428         nframes_t now = _session.transport_frame ();
 429         nframes_t end = now + nframes;
 430         nframes_t offset = 0;
 431
 432         Glib::Mutex::Lock lm (control_lock(), Glib::TRY_LOCK);
 433
 434         if (!lm.locked()) {
 435                 connect_and_run (bufs, nframes, offset, false);
 436                 return;
 437         }
 438
 439         if (!find_next_event (now, end, next_event)) {
 440
 441                 /* no events have a time within the relevant range */
 442
 443                 connect_and_run (bufs, nframes, offset, true, now);
 444                 return;
 445         }
 446
 447         while (nframes) {
 448
 449                 nframes_t cnt = min (((nframes_t) ceil (next_event.when) - now), nframes);
 450
 451                 connect_and_run (bufs, cnt, offset, true, now);
 452
 453                 nframes -= cnt;
 454                 offset += cnt;
 455                 now += cnt;
 456
 457                 if (!find_next_event (now, end, next_event)) {
 458                         break;
 459                 }
 460         }
 461
 462         /* cleanup anything that is left to do */
 463
 464         if (nframes) {
 465                 connect_and_run (bufs, nframes, offset, true, now);
 466         }
 467 }
 468
 469 float
 470 PluginInsert::default_parameter_value (const Evoral::Parameter& param)
 471 {
 472         if (param.type() != PluginAutomation)
 473                 return 1.0;
 474
 475         if (_plugins.empty()) {
 476                 fatal << _("programming error: ") << X_("PluginInsert::default_parameter_value() called with no plugin")
 477                       << endmsg;
 478                 /*NOTREACHED*/
 479         }
 480
 481         return _plugins[0]->default_value (param.id());
 482 }
 483
 484 boost::shared_ptr<Plugin>
 485 PluginInsert::plugin_factory (boost::shared_ptr<Plugin> other)
 486 {
 487         boost::shared_ptr<LadspaPlugin> lp;
 488 #ifdef HAVE_SLV2
 489         boost::shared_ptr<LV2Plugin> lv2p;
 490 #endif
 491 #ifdef VST_SUPPORT
 492         boost::shared_ptr<VSTPlugin> vp;
 493 #endif
 494 #ifdef HAVE_AUDIOUNITS
 495         boost::shared_ptr<AUPlugin> ap;
 496 #endif
 497
 498         if ((lp = boost::dynamic_pointer_cast<LadspaPlugin> (other)) != 0) {
 499                 return boost::shared_ptr<Plugin> (new LadspaPlugin (*lp));
 500 #ifdef HAVE_SLV2
 501         } else if ((lv2p = boost::dynamic_pointer_cast<LV2Plugin> (other)) != 0) {
 502                 return boost::shared_ptr<Plugin> (new LV2Plugin (*lv2p));
 503 #endif
 504 #ifdef VST_SUPPORT
 505         } else if ((vp = boost::dynamic_pointer_cast<VSTPlugin> (other)) != 0) {
 506                 return boost::shared_ptr<Plugin> (new VSTPlugin (*vp));
 507 #endif
 508 #ifdef HAVE_AUDIOUNITS
 509         } else if ((ap = boost::dynamic_pointer_cast<AUPlugin> (other)) != 0) {
 510                 return boost::shared_ptr<Plugin> (new AUPlugin (*ap));
 511 #endif
 512         }
 513
 514         fatal << string_compose (_("programming error: %1"),
 515                           X_("unknown plugin type in PluginInsert::plugin_factory"))
 516               << endmsg;
 517         /*NOTREACHED*/
 518         return boost::shared_ptr<Plugin> ((Plugin*) 0);
 519 }
 520
 521 bool
 522 PluginInsert::configure_io (ChanCount in, ChanCount out)
 523 {
 524         if (set_count (count_for_configuration (in, out)) < 0) {
 525                 return false;
 526         }
 527
 528         /* if we're running replicated plugins, each plugin has
 529            the same i/o configuration and we may need to announce how many
 530            output streams there are.
 531
 532            if we running a single plugin, we need to configure it.
 533         */
 534
 535         if (_plugins.front()->configure_io (in, out) < 0) {
 536                 return false;
 537         }
 538
 539         // we don't know the analysis window size, so we must work with the
 540         // current buffer size here. each request for data fills in these
 541         // buffers and the analyser makes sure it gets enough data for the
 542         // analysis window
 543         session().ensure_buffer_set (_signal_analysis_inputs, in);
 544         //_signal_analysis_inputs.set_count (in);
 545
 546         session().ensure_buffer_set (_signal_analysis_outputs, out);
 547         //_signal_analysis_outputs.set_count (out);
 548
 549         // std::cerr << "set counts to i" << in.n_audio() << "/o" << out.n_audio() << std::endl;
 550
 551         return Processor::configure_io (in, out);
 552 }
 553
 554 bool
 555 PluginInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
 556 {
 557         // Plugin has flexible I/O, so delegate to it
 558         if (_plugins.front()->reconfigurable_io()) {
 559                 return _plugins.front()->can_support_io_configuration (in, out);
 560         }
 561
 562         ChanCount inputs  = _plugins[0]->get_info()->n_inputs;
 563         ChanCount outputs = _plugins[0]->get_info()->n_outputs;
 564
 565         // Plugin inputs match requested inputs exactly
 566         if (inputs == in) {
 567                 out = outputs;
 568                 return true;
 569         }
 570
 571         // See if replication is possible
 572         // We can replicate if there exists a single factor f such that, for every type,
 573         // the number of plugin inputs * f = the requested number of inputs
 574         uint32_t f             = 0;
 575         bool     can_replicate = true;
 576         for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
 577                 // No inputs of this type
 578                 if (inputs.get(*t) == 0 && in.get(*t) == 0) {
 579                         continue;
 580
 581                 // Plugin has more inputs than requested, can not replicate
 582                 } else if (inputs.get(*t) >= in.get(*t)) {
 583                         can_replicate = false;
 584                         break;
 585
 586                 // Plugin inputs is not a factor of requested inputs, can not replicate
 587                 } else if (inputs.get(*t) == 0 || in.get(*t) % inputs.get(*t) != 0) {
 588                         can_replicate = false;
 589                         break;
 590
 591                 // Potential factor not set yet
 592                 } else if (f == 0) {
 593                         f = in.get(*t) / inputs.get(*t);;
 594                 }
 595
 596                 // Factor for this type does not match another type, can not replicate
 597                 if (f != (in.get(*t) / inputs.get(*t))) {
 598                         can_replicate = false;
 599                         break;
 600                 }
 601         }
 602
 603         if (can_replicate) {
 604                 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
 605                         out.set (*t, outputs.get(*t) * f);
 606                 }
 607                 return true;
 608         } else {
 609                 return false;
 610         }
 611 }
 612
 613 /* Number of plugin instances required to support a given channel configuration.
 614  * (private helper)
 615  */
 616 int32_t
 617 PluginInsert::count_for_configuration (ChanCount in, ChanCount /*out*/) const
 618 {
 619         if (_plugins.front()->reconfigurable_io()) {
 620                 /* plugin has flexible I/O, so the answer is always 1 */
 621                 /* this could change if we ever decide to replicate AU's */
 622                 return 1;
 623         }
 624
 625         // FIXME: take 'out' into consideration
 626
 627         ChanCount outputs = _plugins[0]->get_info()->n_outputs;
 628         ChanCount inputs = _plugins[0]->get_info()->n_inputs;
 629
 630         if (inputs.n_total() == 0) {
 631                 /* instrument plugin, always legal, but throws away any existing streams */
 632                 return 1;
 633         }
 634
 635         if (inputs.n_total() == 1 && outputs == inputs
 636                         && ((inputs.n_audio() == 0 && in.n_audio() == 0)
 637                                 || (inputs.n_midi() == 0 && in.n_midi() == 0))) {
 638                 /* mono plugin, replicate as needed to match in */
 639                 return in.n_total();
 640         }
 641
 642         if (inputs == in) {
 643                 /* exact match */
 644                 return 1;
 645         }
 646
 647         // assumes in is valid, so we must be replicating
 648         if (inputs.n_total() < in.n_total()
 649                         && (in.n_total() % inputs.n_total() == 0)) {
 650
 651                 return in.n_total() / inputs.n_total();
 652         }
 653
 654         /* err... */
 655         return 0;
 656 }
 657
 658 XMLNode&
 659 PluginInsert::get_state(void)
 660 {
 661         return state (true);
 662 }
 663
 664 XMLNode&
 665 PluginInsert::state (bool full)
 666 {
 667         XMLNode& node = Processor::state (full);
 668
 669         node.add_property("type", _plugins[0]->state_node_name());
 670         node.add_property("unique-id", _plugins[0]->unique_id());
 671         node.add_property("count", string_compose("%1", _plugins.size()));
 672         node.add_child_nocopy (_plugins[0]->get_state());
 673
 674         /* add port automation state */
 675         XMLNode *autonode = new XMLNode(port_automation_node_name);
 676         set<Evoral::Parameter> automatable = _plugins[0]->automatable();
 677
 678         for (set<Evoral::Parameter>::iterator x = automatable.begin(); x != automatable.end(); ++x) {
 679
 680                 /*XMLNode* child = new XMLNode("port");
 681                 snprintf(buf, sizeof(buf), "%" PRIu32, *x);
 682                 child->add_property("number", string(buf));
 683
 684                 child->add_child_nocopy (automation_list (*x).state (full));
 685                 autonode->add_child_nocopy (*child);
 686                 */
 687                 AutomationList* list = dynamic_cast<AutomationList*>(control(*x)->list().get());
 688                 autonode->add_child_nocopy (list->state (full));
 689         }
 690
 691         node.add_child_nocopy (*autonode);
 692
 693         return node;
 694 }
 695
 696 int
 697 PluginInsert::set_state(const XMLNode& node, int version)
 698 {
 699         XMLNodeList nlist = node.children();
 700         XMLNodeIterator niter;
 701         XMLPropertyList plist;
 702         const XMLProperty *prop;
 703         ARDOUR::PluginType type;
 704
 705         if ((prop = node.property ("type")) == 0) {
 706                 error << _("XML node describing plugin is missing the `type' field") << endmsg;
 707                 return -1;
 708         }
 709
 710         if (prop->value() == X_("ladspa") || prop->value() == X_("Ladspa")) { /* handle old school sessions */
 711                 type = ARDOUR::LADSPA;
 712         } else if (prop->value() == X_("lv2")) {
 713                 type = ARDOUR::LV2;
 714         } else if (prop->value() == X_("vst")) {
 715                 type = ARDOUR::VST;
 716         } else if (prop->value() == X_("audiounit")) {
 717                 type = ARDOUR::AudioUnit;
 718         } else {
 719                 error << string_compose (_("unknown plugin type %1 in plugin insert state"),
 720                                   prop->value())
 721                       << endmsg;
 722                 return -1;
 723         }
 724
 725         prop = node.property ("unique-id");
 726
 727         if (prop == 0) {
 728 #ifdef VST_SUPPORT
 729                 /* older sessions contain VST plugins with only an "id" field.
 730                  */
 731
 732                 if (type == ARDOUR::VST) {
 733                         prop = node.property ("id");
 734                 }
 735 #endif
 736                 /* recheck  */
 737
 738                 if (prop == 0) {
 739                         error << _("Plugin has no unique ID field") << endmsg;
 740                         return -1;
 741                 }
 742         }
 743
 744         boost::shared_ptr<Plugin> plugin;
 745
 746         plugin = find_plugin (_session, prop->value(), type);
 747
 748         if (plugin == 0) {
 749                 error << string_compose(_("Found a reference to a plugin (\"%1\") that is unknown.\n"
 750                                    "Perhaps it was removed or moved since it was last used."), prop->value())
 751                       << endmsg;
 752                 return -1;
 753         }
 754
 755         uint32_t count = 1;
 756         bool need_automatables = true;
 757
 758         if (_plugins.empty()) {
 759                 /* if we are adding the first plugin, we will need to set
 760                    up automatable controls.
 761                 */
 762                 need_automatables = true;
 763         }
 764
 765         if ((prop = node.property ("count")) != 0) {
 766                 sscanf (prop->value().c_str(), "%u", &count);
 767         }
 768
 769         if (_plugins.size() != count) {
 770
 771                 _plugins.push_back (plugin);
 772
 773                 for (uint32_t n = 1; n < count; ++n) {
 774                         _plugins.push_back (plugin_factory (plugin));
 775                 }
 776         }
 777
 778         if (need_automatables) {
 779                 set_automatable ();
 780         }
 781
 782         /* Handle the node list for this Processor (or Insert if an A2 session) */
 783         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 784
 785                 if ((*niter)->name() == plugin->state_node_name()) {
 786
 787                         for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
 788                                 (*i)->set_state (**niter, version);
 789                         }
 790                         break;
 791                 }
 792         }
 793
 794         Processor::set_state (node, version);
 795
 796         if (version < 3000) {
 797
 798                 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 799                         if ((*niter)->name() == "Redirect") {
 800                                 /* XXX do we need to tackle placement? i think not (pd; oct 16 2009) */
 801                                 Processor::set_state (**niter, version);
 802                                 break;
 803                         }
 804                 }
 805
 806                 set_parameter_state_2X (node, version);
 807
 808         } else {
 809
 810                 set_parameter_state (node, version);
 811         }
 812
 813         // The name of the PluginInsert comes from the plugin, nothing else
 814         _name = plugin->get_info()->name;
 815
 816         /* catch up on I/O */
 817
 818         {
 819                 Glib::Mutex::Lock em (_session.engine().process_lock());
 820                 IO::PortCountChanged (max(input_streams(), output_streams()));
 821         }
 822
 823         return 0;
 824 }
 825
 826 void
 827 PluginInsert::set_parameter_state (const XMLNode& node, int version)
 828 {
 829         XMLNodeList nlist = node.children();
 830         XMLNodeIterator niter;
 831
 832         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 833
 834                 if ((*niter)->name() != port_automation_node_name) {
 835                         continue;
 836                 }
 837
 838                 XMLNodeList cnodes;
 839                 XMLProperty *cprop;
 840                 XMLNodeConstIterator iter;
 841                 XMLNode *child;
 842                 const char *port;
 843                 uint32_t port_id;
 844
 845                 cnodes = (*niter)->children ("AutomationList");
 846
 847                 for (iter = cnodes.begin(); iter != cnodes.end(); ++iter) {
 848
 849                         child = *iter;
 850
 851                         /* XXX this code knows way too much about the internal details of an AutomationList state node */
 852
 853                         if ((cprop = child->property("automation-id")) != 0) {
 854                                 port = cprop->value().c_str();
 855                         } else {
 856                                 warning << _("PluginInsert: Auto: no plugin parameter number seen") << endmsg;
 857                                 continue;
 858                         }
 859
 860                         if (sscanf (port, "parameter-%" PRIu32, &port_id) != 1) {
 861                                 warning << _("PluginInsert: Auto: no parameter number found") << endmsg;
 862                                 continue;
 863                         }
 864
 865                         if (port_id >= _plugins[0]->parameter_count()) {
 866                                 warning << _("PluginInsert: Auto: plugin parameter out of range") << endmsg;
 867                                 continue;
 868                         }
 869
 870                         boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl>(
 871                                         control(Evoral::Parameter(PluginAutomation, 0, port_id), true));
 872
 873                         if (c) {
 874                                 c->alist()->set_state (*child, version);
 875                         } else {
 876                                 error << string_compose (_("PluginInsert: automatable control %1 not found - ignored"), port_id) << endmsg;
 877                         }
 878                 }
 879
 880                 /* done */
 881
 882                 break;
 883         }
 884 }
 885
 886 void
 887 PluginInsert::set_parameter_state_2X (const XMLNode& node, int version)
 888 {
 889         XMLNodeList nlist = node.children();
 890         XMLNodeIterator niter;
 891
 892         /* look for port automation node */
 893
 894         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 895
 896                 if ((*niter)->name() != port_automation_node_name) {
 897                         continue;
 898                 }
 899
 900                 XMLNodeList cnodes;
 901                 XMLProperty *cprop;
 902                 XMLNodeConstIterator iter;
 903                 XMLNode *child;
 904                 const char *port;
 905                 uint32_t port_id;
 906
 907                 cnodes = (*niter)->children ("port");
 908
 909                 for (iter = cnodes.begin(); iter != cnodes.end(); ++iter){
 910
 911                         child = *iter;
 912
 913                         if ((cprop = child->property("number")) != 0) {
 914                                 port = cprop->value().c_str();
 915                         } else {
 916                                 warning << _("PluginInsert: Auto: no ladspa port number") << endmsg;
 917                                 continue;
 918                         }
 919
 920                         sscanf (port, "%" PRIu32, &port_id);
 921
 922                         if (port_id >= _plugins[0]->parameter_count()) {
 923                                 warning << _("PluginInsert: Auto: port id out of range") << endmsg;
 924                                 continue;
 925                         }
 926
 927                         boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl>(
 928                                         control(Evoral::Parameter(PluginAutomation, 0, port_id), true));
 929
 930                         if (c) {
 931                                 if (!child->children().empty()) {
 932                                         c->alist()->set_state (*child->children().front(), version);
 933                                 }
 934                         } else {
 935                                 error << string_compose (_("PluginInsert: automatable control %1 not found - ignored"), port_id) << endmsg;
 936                         }
 937                 }
 938
 939                 /* done */
 940
 941                 break;
 942         }
 943 }
 944
 945
 946 string
 947 PluginInsert::describe_parameter (Evoral::Parameter param)
 948 {
 949         if (param.type() != PluginAutomation)
 950                 return Automatable::describe_parameter(param);
 951
 952         return _plugins[0]->describe_parameter (param);
 953 }
 954
 955 ARDOUR::nframes_t
 956 PluginInsert::signal_latency() const
 957 {
 958         if (_user_latency) {
 959                 return _user_latency;
 960         }
 961
 962         return _plugins[0]->signal_latency ();
 963 }
 964
 965 ARDOUR::PluginType
 966 PluginInsert::type ()
 967 {
 968        return plugin()->get_info()->type;
 969 }
 970
 971 PluginInsert::PluginControl::PluginControl (PluginInsert* p, const Evoral::Parameter &param, boost::shared_ptr<AutomationList> list)
 972         : AutomationControl (p->session(), param, list, p->describe_parameter(param))
 973         , _plugin (p)
 974 {
 975         Plugin::ParameterDescriptor desc;
 976         p->plugin(0)->get_parameter_descriptor (param.id(), desc);
 977         _logarithmic = desc.logarithmic;
 978         _toggled = desc.toggled;
 979 }
 980
 981 void
 982 PluginInsert::PluginControl::set_value (float val)
 983 {
 984         /* FIXME: probably should be taking out some lock here.. */
 985
 986         if (_toggled) {
 987                 if (val > 0.5) {
 988                         val = 1.0;
 989                 } else {
 990                         val = 0.0;
 991                 }
 992         } else {
 993
 994                 /*const float range = _list->get_max_y() - _list->get_min_y();
 995                 const float lower = _list->get_min_y();
 996
 997                 if (!_logarithmic) {
 998                         val = lower + (range * val);
 999                 } else {
1000                         float log_lower = 0.0f;
1001                         if (lower > 0.0f) {
1002                                 log_lower = log(lower);
1003                         }
1004
1005                         val = exp(log_lower + log(range) * val);
1006                 }*/
1007
1008         }
1009
1010         for (Plugins::iterator i = _plugin->_plugins.begin();
1011                         i != _plugin->_plugins.end(); ++i) {
1012                 (*i)->set_parameter (_list->parameter().id(), val);
1013         }
1014
1015         boost::shared_ptr<Plugin> iasp = _plugin->_impulseAnalysisPlugin.lock();
1016         if (iasp) {
1017                 iasp->set_parameter (_list->parameter().id(), val);
1018         }
1019
1020         AutomationControl::set_value(val);
1021 }
1022
1023 float
1024 PluginInsert::PluginControl::get_value (void) const
1025 {
1026         /* FIXME: probably should be taking out some lock here.. */
1027
1028         float val = _plugin->get_parameter (_list->parameter());
1029
1030         return val;
1031
1032         /*if (_toggled) {
1033
1034                 return val;
1035
1036         } else {
1037
1038                 if (_logarithmic) {
1039                         val = log(val);
1040                 }
1041
1042                 return ((val - lower) / range);
1043         }*/
1044 }
1045
1046 boost::shared_ptr<Plugin>
1047 PluginInsert::get_impulse_analysis_plugin()
1048 {
1049         boost::shared_ptr<Plugin> ret;
1050         if (_impulseAnalysisPlugin.expired()) {
1051                 ret = plugin_factory(_plugins[0]);
1052                 _impulseAnalysisPlugin = ret;
1053         } else {
1054                 ret = _impulseAnalysisPlugin.lock();
1055         }
1056
1057         return ret;
1058 }
1059
1060 void
1061 PluginInsert::collect_signal_for_analysis(nframes_t nframes)
1062 {
1063         // called from outside the audio thread, so this should be safe
1064         // only do audio as analysis is (currently) only for audio plugins
1065         _signal_analysis_inputs.ensure_buffers(  DataType::AUDIO, input_streams().n_audio(),  nframes);
1066         _signal_analysis_outputs.ensure_buffers( DataType::AUDIO, output_streams().n_audio(), nframes);
1067
1068         _signal_analysis_collected_nframes   = 0;
1069         _signal_analysis_collect_nframes_max = nframes;
1070 }
1071