libs/ardour/lv2_plugin_lilv.cc

   1 ;/*
   2     Copyright (C) 2008-2011 Paul Davis
   3     Author: David Robillard
   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 */
  20
  21 #include <string>
  22 #include <vector>
  23
  24 #include <cmath>
  25 #include <cstdlib>
  26 #include <cstring>
  27
  28 #include <glibmm.h>
  29
  30 #include <boost/utility.hpp>
  31
  32 #include "pbd/compose.h"
  33 #include "pbd/error.h"
  34 #include "pbd/pathscanner.h"
  35 #include "pbd/stl_delete.h"
  36 #include "pbd/xml++.h"
  37
  38 #include "libardour-config.h"
  39
  40 #include "ardour/ardour.h"
  41 #include "ardour/audio_buffer.h"
  42 #include "ardour/audioengine.h"
  43 #include "ardour/debug.h"
  44 #include "ardour/lv2_event_buffer.h"
  45 #include "ardour/lv2_plugin.h"
  46 #include "ardour/lv2_state.h"
  47 #include "ardour/session.h"
  48
  49 #include "i18n.h"
  50 #include <locale.h>
  51
  52 #include <lilv/lilv.h>
  53
  54 #include "lv2ext/lv2_files.h"
  55 #include "lv2ext/lv2_persist.h"
  56 #include "rdff.h"
  57 #ifdef HAVE_SUIL
  58 #include <suil/suil.h>
  59 #endif
  60
  61 #define NS_DC   "http://dublincore.org/documents/dcmi-namespace/"
  62 #define NS_LV2  "http://lv2plug.in/ns/lv2core#"
  63 #define NS_PSET "http://lv2plug.in/ns/dev/presets#"
  64 #define NS_UI   "http://lv2plug.in/ns/extensions/ui#"
  65
  66 using namespace std;
  67 using namespace ARDOUR;
  68 using namespace PBD;
  69
  70 URIMap LV2Plugin::_uri_map;
  71 uint32_t LV2Plugin::_midi_event_type = _uri_map.uri_to_id(
  72         "http://lv2plug.in/ns/ext/event",
  73         "http://lv2plug.in/ns/ext/midi#MidiEvent");
  74
  75 class LV2World : boost::noncopyable {
  76 public:
  77         LV2World ();
  78         ~LV2World ();
  79
  80         LilvWorld* world;
  81         LilvNode*  input_class;      ///< Input port
  82         LilvNode*  output_class;     ///< Output port
  83         LilvNode*  audio_class;      ///< Audio port
  84         LilvNode*  control_class;    ///< Control port
  85         LilvNode*  event_class;      ///< Event port
  86         LilvNode*  midi_class;       ///< MIDI event
  87         LilvNode*  in_place_broken;
  88         LilvNode*  integer;
  89         LilvNode*  toggled;
  90         LilvNode*  srate;
  91         LilvNode*  gtk_gui;
  92         LilvNode*  external_gui;
  93         LilvNode*  logarithmic;
  94 };
  95
  96 static LV2World _world;
  97
  98 struct LV2Plugin::Impl {
  99         Impl() : plugin(0), ui(0), ui_type(0), name(0), author(0), instance(0) {}
 100         LilvPlugin*     plugin;
 101         const LilvUI*   ui;
 102         const LilvNode* ui_type;
 103         LilvNode*       name;
 104         LilvNode*       author;
 105         LilvInstance*   instance;
 106 };
 107
 108 LV2Plugin::LV2Plugin (AudioEngine& engine,
 109                       Session&     session,
 110                       void*        c_plugin,
 111                       framecnt_t   rate)
 112         : Plugin(engine, session)
 113         , _impl(new Impl())
 114         , _features(NULL)
 115         , _insert_id("0")
 116 {
 117         init(c_plugin, rate);
 118 }
 119
 120 LV2Plugin::LV2Plugin (const LV2Plugin& other)
 121         : Plugin(other)
 122         , _impl(new Impl())
 123         , _features(NULL)
 124         , _insert_id(other._insert_id)
 125 {
 126         init(other._impl->plugin, other._sample_rate);
 127
 128         for (uint32_t i = 0; i < parameter_count(); ++i) {
 129                 _control_data[i] = other._shadow_data[i];
 130                 _shadow_data[i]  = other._shadow_data[i];
 131         }
 132 }
 133
 134 void
 135 LV2Plugin::init(void* c_plugin, framecnt_t rate)
 136 {
 137         DEBUG_TRACE(DEBUG::LV2, "init\n");
 138
 139         _impl->plugin          = (LilvPlugin*)c_plugin;
 140         _impl->ui              = NULL;
 141         _impl->ui_type         = NULL;
 142         _control_data         = 0;
 143         _shadow_data          = 0;
 144         _latency_control_port = 0;
 145         _was_activated        = false;
 146
 147         _instance_access_feature.URI  = "http://lv2plug.in/ns/ext/instance-access";
 148         _data_access_feature.URI      = "http://lv2plug.in/ns/ext/data-access";
 149         _path_support_feature.URI     = LV2_FILES_PATH_SUPPORT_URI;
 150         _new_file_support_feature.URI = LV2_FILES_NEW_FILE_SUPPORT_URI;
 151         _persist_feature.URI          = "http://lv2plug.in/ns/ext/persist";
 152         _persist_feature.data         = NULL;
 153
 154         LilvPlugin* plugin = _impl->plugin;
 155
 156         LilvNode* persist_uri = lilv_new_uri(_world.world, _persist_feature.URI);
 157         _supports_persist = lilv_plugin_has_feature(plugin, persist_uri);
 158         lilv_node_free(persist_uri);
 159
 160         _features    = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 7);
 161         _features[0] = &_instance_access_feature;
 162         _features[1] = &_data_access_feature;
 163         _features[2] = &_path_support_feature;
 164         _features[3] = &_new_file_support_feature;
 165         _features[4] = &_persist_feature;
 166         _features[5] = _uri_map.feature();
 167         _features[6] = NULL;
 168
 169         LV2_Files_Path_Support* path_support = (LV2_Files_Path_Support*)malloc(
 170                 sizeof(LV2_Files_Path_Support));
 171         path_support->host_data = this;
 172         path_support->abstract_path = &lv2_files_abstract_path;
 173         path_support->absolute_path = &lv2_files_absolute_path;
 174         _path_support_feature.data = path_support;
 175
 176         LV2_Files_New_File_Support* new_file_support = (LV2_Files_New_File_Support*)malloc(
 177                 sizeof(LV2_Files_New_File_Support));
 178         new_file_support->host_data = this;
 179         new_file_support->new_file_path = &lv2_files_new_file_path;
 180         _new_file_support_feature.data = new_file_support;
 181
 182         _impl->instance = lilv_plugin_instantiate(plugin, rate, _features);
 183         _impl->name     = lilv_plugin_get_name(plugin);
 184         _impl->author   = lilv_plugin_get_author_name(plugin);
 185
 186         if (_impl->instance == 0) {
 187                 error << _("LV2: Failed to instantiate plugin ") << uri() << endmsg;
 188                 throw failed_constructor();
 189         }
 190
 191         _instance_access_feature.data              = (void*)_impl->instance->lv2_handle;
 192         _data_access_extension_data.extension_data = _impl->instance->lv2_descriptor->extension_data;
 193         _data_access_feature.data                  = &_data_access_extension_data;
 194
 195         if (lilv_plugin_has_feature(plugin, _world.in_place_broken)) {
 196                 error << string_compose(
 197                     _("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
 198                     lilv_node_as_string(_impl->name)) << endmsg;
 199                 lilv_node_free(_impl->name);
 200                 lilv_node_free(_impl->author);
 201                 throw failed_constructor();
 202         }
 203
 204         _sample_rate = rate;
 205
 206         const uint32_t num_ports    = this->num_ports();
 207         const bool     latent       = lilv_plugin_has_latency(plugin);
 208         const uint32_t latency_port = (latent)
 209             ? lilv_plugin_get_latency_port_index(plugin)
 210                 : 0;
 211
 212         _control_data = new float[num_ports];
 213         _shadow_data  = new float[num_ports];
 214         _defaults     = new float[num_ports];
 215
 216         for (uint32_t i = 0; i < num_ports; ++i) {
 217                 const LilvPort* port = lilv_plugin_get_port_by_index(plugin, i);
 218                 const LilvNode* sym  = lilv_port_get_symbol(plugin, port);
 219
 220                 // Store index in map so we can look up index by symbol
 221                 _port_indices.insert(std::make_pair(lilv_node_as_string(sym), i));
 222
 223                 // Get range and default value if applicable
 224                 if (parameter_is_control(i)) {
 225                         LilvNode* def;
 226                         lilv_port_get_range(plugin, port, &def, NULL, NULL);
 227                         _defaults[i] = def ? lilv_node_as_float(def) : 0.0f;
 228                         if (lilv_port_has_property (plugin, port, _world.srate)) {
 229                                 _defaults[i] *= _session.frame_rate ();
 230                         }
 231                         lilv_node_free(def);
 232
 233                         lilv_instance_connect_port(_impl->instance, i, &_control_data[i]);
 234
 235                         if (latent && ( i == latency_port) ) {
 236                                 _latency_control_port  = &_control_data[i];
 237                                 *_latency_control_port = 0;
 238                         }
 239
 240                         if (parameter_is_input(i)) {
 241                                 _shadow_data[i] = default_value(i);
 242                         }
 243                 } else {
 244                         _defaults[i] = 0.0f;
 245                 }
 246         }
 247
 248         LilvUIs* uis = lilv_plugin_get_uis(plugin);
 249         if (lilv_uis_size(uis) > 0) {
 250 #ifdef HAVE_SUIL
 251                 // Look for embeddable UI
 252                 LILV_FOREACH(uis, u, uis) {
 253                         const LilvUI*   this_ui      = lilv_uis_get(uis, u);
 254                         const LilvNode* this_ui_type = NULL;
 255                         if (lilv_ui_is_supported(this_ui,
 256                                                  suil_ui_supported,
 257                                                  _world.gtk_gui,
 258                                                  &this_ui_type)) {
 259                                 // TODO: Multiple UI support
 260                                 _impl->ui      = this_ui;
 261                                 _impl->ui_type = this_ui_type;
 262                                 break;
 263                         }
 264                 }
 265 #else
 266                 // Look for Gtk native UI
 267                 LILV_FOREACH(uis, i, uis) {
 268                         const LilvUI* ui = lilv_uis_get(uis, i);
 269                         if (lilv_ui_is_a(ui, _world.gtk_gui)) {
 270                                 _impl->ui      = ui;
 271                                 _impl->ui_type = _world.gtk_gui;
 272                                 break;
 273                         }
 274                 }
 275 #endif
 276
 277                 // If Gtk UI is not available, try to find external UI
 278                 if (!_impl->ui) {
 279                         LILV_FOREACH(uis, i, uis) {
 280                                 const LilvUI* ui = lilv_uis_get(uis, i);
 281                                 if (lilv_ui_is_a(ui, _world.external_gui)) {
 282                                         _impl->ui      = ui;
 283                                         _impl->ui_type = _world.external_gui;
 284                                         break;
 285                                 }
 286                         }
 287                 }
 288         }
 289
 290         latency_compute_run();
 291 }
 292
 293 LV2Plugin::~LV2Plugin ()
 294 {
 295         DEBUG_TRACE(DEBUG::LV2, string_compose("%1 destroy\n", name()));
 296
 297         deactivate();
 298         cleanup();
 299
 300         lilv_instance_free(_impl->instance);
 301         lilv_node_free(_impl->name);
 302         lilv_node_free(_impl->author);
 303
 304         delete [] _control_data;
 305         delete [] _shadow_data;
 306 }
 307
 308 bool
 309 LV2Plugin::is_external_ui() const
 310 {
 311         if (!_impl->ui) {
 312                 return false;
 313         }
 314         return lilv_ui_is_a(_impl->ui, _world.external_gui);
 315 }
 316
 317 string
 318 LV2Plugin::unique_id() const
 319 {
 320         return lilv_node_as_uri(lilv_plugin_get_uri(_impl->plugin));
 321 }
 322
 323 const char*
 324 LV2Plugin::uri() const
 325 {
 326         return lilv_node_as_uri(lilv_plugin_get_uri(_impl->plugin));
 327 }
 328
 329 const char*
 330 LV2Plugin::label() const
 331 {
 332         return lilv_node_as_string(_impl->name);
 333 }
 334
 335 const char*
 336 LV2Plugin::name() const
 337 {
 338         return lilv_node_as_string(_impl->name);
 339 }
 340
 341 const char*
 342 LV2Plugin::maker() const
 343 {
 344         return _impl->author ? lilv_node_as_string (_impl->author) : "Unknown";
 345 }
 346
 347 uint32_t
 348 LV2Plugin::num_ports() const
 349 {
 350         return lilv_plugin_get_num_ports(_impl->plugin);
 351 }
 352
 353 uint32_t
 354 LV2Plugin::parameter_count() const
 355 {
 356         return lilv_plugin_get_num_ports(_impl->plugin);
 357 }
 358
 359 float
 360 LV2Plugin::default_value(uint32_t port)
 361 {
 362         return _defaults[port];
 363 }
 364
 365 const char*
 366 LV2Plugin::port_symbol(uint32_t index) const
 367 {
 368         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, index);
 369         if (!port) {
 370                 error << name() << ": Invalid port index " << index << endmsg;
 371         }
 372
 373         const LilvNode* sym = lilv_port_get_symbol(_impl->plugin, port);
 374         return lilv_node_as_string(sym);
 375 }
 376
 377 void
 378 LV2Plugin::set_parameter(uint32_t which, float val)
 379 {
 380         DEBUG_TRACE(DEBUG::LV2, string_compose(
 381                             "%1 set parameter %2 to %3\n", name(), which, val));
 382
 383         if (which < lilv_plugin_get_num_ports(_impl->plugin)) {
 384                 _shadow_data[which] = val;
 385         } else {
 386                 warning << string_compose(
 387                     _("Illegal parameter number used with plugin \"%1\". "
 388                       "This is a bug in either %2 or the LV2 plugin <%3>"),
 389                     name(), PROGRAM_NAME, unique_id()) << endmsg;
 390         }
 391
 392         Plugin::set_parameter(which, val);
 393 }
 394
 395 float
 396 LV2Plugin::get_parameter(uint32_t which) const
 397 {
 398         if (parameter_is_input(which)) {
 399                 return (float)_shadow_data[which];
 400         } else {
 401                 return (float)_control_data[which];
 402         }
 403         return 0.0f;
 404 }
 405
 406 uint32_t
 407 LV2Plugin::nth_parameter(uint32_t n, bool& ok) const
 408 {
 409         ok = false;
 410         for (uint32_t c = 0, x = 0; x < lilv_plugin_get_num_ports(_impl->plugin); ++x) {
 411                 if (parameter_is_control(x)) {
 412                         if (c++ == n) {
 413                                 ok = true;
 414                                 return x;
 415                         }
 416                 }
 417         }
 418
 419         return 0;
 420 }
 421
 422 const void*
 423 LV2Plugin::extension_data (const char* uri) const
 424 {
 425         return lilv_instance_get_extension_data(_impl->instance, uri);
 426 }
 427
 428 void*
 429 LV2Plugin::c_plugin ()
 430 {
 431         return _impl->plugin;
 432 }
 433
 434 void*
 435 LV2Plugin::c_ui ()
 436 {
 437         return (void*)_impl->ui;
 438 }
 439
 440 void*
 441 LV2Plugin::c_ui_type ()
 442 {
 443         return (void*)_impl->ui_type;
 444 }
 445
 446 int
 447 LV2Plugin::lv2_persist_store_callback(void*       host_data,
 448                                       uint32_t    key,
 449                                       const void* value,
 450                                       size_t      size,
 451                                       uint32_t    type,
 452                                       uint32_t    flags)
 453 {
 454         DEBUG_TRACE(DEBUG::LV2, string_compose(
 455                             "persist store %1 (size: %2, type: %3)\n",
 456                             _uri_map.id_to_uri(NULL, key),
 457                             size,
 458                             _uri_map.id_to_uri(NULL, type)));
 459
 460         LV2PersistState* state = (LV2PersistState*)host_data;
 461         state->add_uri(key,  _uri_map.id_to_uri(NULL, key));
 462         state->add_uri(type, _uri_map.id_to_uri(NULL, type));
 463         return state->add_value(key, value, size, type, flags);
 464 }
 465
 466 const void*
 467 LV2Plugin::lv2_persist_retrieve_callback(void*     host_data,
 468                                          uint32_t  key,
 469                                          size_t*   size,
 470                                          uint32_t* type,
 471                                          uint32_t* flags)
 472 {
 473         LV2PersistState* state = (LV2PersistState*)host_data;
 474         LV2PersistState::Values::const_iterator i = state->values.find(key);
 475         if (i == state->values.end()) {
 476                 warning << "LV2 plugin attempted to retrieve nonexistent key: "
 477                         << _uri_map.id_to_uri(NULL, key) << endmsg;
 478                 return NULL;
 479         }
 480         *size = i->second.size;
 481         *type = i->second.type;
 482         *flags = LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE; // FIXME
 483         DEBUG_TRACE(DEBUG::LV2, string_compose(
 484                             "persist retrieve %1 = %2 (size: %3, type: %4)\n",
 485                             _uri_map.id_to_uri(NULL, key),
 486                             i->second.value, *size, *type));
 487         return i->second.value;
 488 }
 489
 490 char*
 491 LV2Plugin::lv2_files_abstract_path(LV2_Files_Host_Data host_data,
 492                                    const char*         absolute_path)
 493 {
 494         LV2Plugin* me = (LV2Plugin*)host_data;
 495         if (me->_insert_id == PBD::ID("0")) {
 496                 return g_strdup(absolute_path);
 497         }
 498
 499         const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
 500                                                            me->_insert_id.to_s());
 501
 502         char* ret = NULL;
 503         if (strncmp(absolute_path, state_dir.c_str(), state_dir.length())) {
 504                 ret = g_strdup(absolute_path);
 505         } else {
 506                 const std::string path(absolute_path + state_dir.length() + 1);
 507                 ret = g_strndup(path.c_str(), path.length());
 508         }
 509
 510         DEBUG_TRACE(DEBUG::LV2, string_compose("abstract path %1 => %2\n",
 511                                                absolute_path, ret));
 512
 513         return ret;
 514 }
 515
 516 char*
 517 LV2Plugin::lv2_files_absolute_path(LV2_Files_Host_Data host_data,
 518                                    const char*         abstract_path)
 519 {
 520         LV2Plugin* me = (LV2Plugin*)host_data;
 521         if (me->_insert_id == PBD::ID("0")) {
 522                 return g_strdup(abstract_path);
 523         }
 524
 525         char* ret = NULL;
 526         if (g_path_is_absolute(abstract_path)) {
 527                 ret = g_strdup(abstract_path);
 528         } else {
 529                 const std::string apath(abstract_path);
 530                 const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
 531                                                                    me->_insert_id.to_s());
 532                 const std::string path = Glib::build_filename(state_dir,
 533                                                               apath);
 534                 ret = g_strndup(path.c_str(), path.length());
 535         }
 536
 537         DEBUG_TRACE(DEBUG::LV2, string_compose("absolute path %1 => %2\n",
 538                                                abstract_path, ret));
 539
 540         return ret;
 541 }
 542
 543 char*
 544 LV2Plugin::lv2_files_new_file_path(LV2_Files_Host_Data host_data,
 545                                    const char*         relative_path)
 546 {
 547         LV2Plugin* me = (LV2Plugin*)host_data;
 548         if (me->_insert_id == PBD::ID("0")) {
 549                 return g_strdup(relative_path);
 550         }
 551
 552         const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
 553                                                            me->_insert_id.to_s());
 554         const std::string path = Glib::build_filename(state_dir,
 555                                                       relative_path);
 556
 557         char* dirname = g_path_get_dirname(path.c_str());
 558         g_mkdir_with_parents(dirname, 0744);
 559         free(dirname);
 560
 561         DEBUG_TRACE(DEBUG::LV2, string_compose("new file path %1 => %2\n",
 562                                                relative_path, path));
 563
 564         return g_strndup(path.c_str(), path.length());
 565 }
 566
 567 void
 568 LV2Plugin::add_state(XMLNode* root) const
 569 {
 570         assert(_insert_id != PBD::ID("0"));
 571
 572         XMLNode*    child;
 573         char        buf[16];
 574         LocaleGuard lg(X_("POSIX"));
 575
 576         for (uint32_t i = 0; i < parameter_count(); ++i) {
 577                 if (parameter_is_input(i) && parameter_is_control(i)) {
 578                         child = new XMLNode("Port");
 579                         child->add_property("symbol", port_symbol(i));
 580                         snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
 581                         child->add_property("value", string(buf));
 582                         root->add_child_nocopy(*child);
 583                 }
 584         }
 585
 586         if (_supports_persist) {
 587                 // Create state directory for this plugin instance
 588                 cerr << "Create statefile name from ID " << _insert_id << endl;
 589                 const std::string state_filename = _insert_id.to_s() + ".rdff";
 590                 const std::string state_path     = Glib::build_filename(
 591                         _session.plugins_dir(), state_filename);
 592
 593                 cout << "Saving LV2 plugin state to " << state_path << endl;
 594
 595                 // Get LV2 Persist extension data from plugin instance
 596                 LV2_Persist* persist = (LV2_Persist*)extension_data(
 597                         "http://lv2plug.in/ns/ext/persist");
 598                 if (!persist) {
 599                         warning << string_compose(
 600                             _("Plugin \"%1\% failed to return LV2 persist data"),
 601                             unique_id());
 602                         return;
 603                 }
 604
 605                 // Save plugin state to state object
 606                 LV2PersistState state(_uri_map);
 607                 persist->save(_impl->instance->lv2_handle,
 608                               &LV2Plugin::lv2_persist_store_callback,
 609                               &state);
 610
 611                 // Write state object to RDFF file
 612                 RDFF file = rdff_open(state_path.c_str(), true);
 613                 state.write(file);
 614                 rdff_close(file);
 615
 616                 root->add_property("state-file", state_filename);
 617         }
 618 }
 619
 620 static inline const LilvNode*
 621 get_value(LilvWorld* world, const LilvNode* subject, const LilvNode* predicate)
 622 {
 623         LilvNodes* vs = lilv_world_find_nodes(world, subject, predicate, NULL);
 624         return vs ? lilv_nodes_get_first(vs) : NULL;
 625 }
 626
 627 void
 628 LV2Plugin::find_presets()
 629 {
 630         LilvNode* dc_title       = lilv_new_uri(_world.world, NS_DC   "title");
 631         LilvNode* pset_hasPreset = lilv_new_uri(_world.world, NS_PSET "hasPreset");
 632
 633         LilvNodes* presets = lilv_plugin_get_value(_impl->plugin, pset_hasPreset);
 634         LILV_FOREACH(nodes, i, presets) {
 635                 const LilvNode* preset = lilv_nodes_get(presets, i);
 636                 const LilvNode* name   = get_value(_world.world, preset, dc_title);
 637                 if (name) {
 638                         _presets.insert(std::make_pair(lilv_node_as_string(preset),
 639                                                        PresetRecord(
 640                                                            lilv_node_as_string(preset),
 641                                                            lilv_node_as_string(name))));
 642                 } else {
 643                         warning << string_compose(
 644                             _("Plugin \"%1\% preset \"%2%\" is missing a dc:title\n"),
 645                             unique_id(), lilv_node_as_string(preset));
 646                 }
 647         }
 648         lilv_nodes_free(presets);
 649
 650         lilv_node_free(pset_hasPreset);
 651         lilv_node_free(dc_title);
 652 }
 653
 654 bool
 655 LV2Plugin::load_preset(PresetRecord r)
 656 {
 657         Plugin::load_preset(r);
 658
 659         LilvNode* lv2_port   = lilv_new_uri(_world.world, NS_LV2 "port");
 660         LilvNode* lv2_symbol = lilv_new_uri(_world.world, NS_LV2 "symbol");
 661         LilvNode* pset_value = lilv_new_uri(_world.world, NS_PSET "value");
 662         LilvNode* preset     = lilv_new_uri(_world.world, r.uri.c_str());
 663
 664         LilvNodes* ports = lilv_world_find_nodes(_world.world, preset, lv2_port, NULL);
 665         LILV_FOREACH(nodes, i, ports) {
 666                 const LilvNode* port   = lilv_nodes_get(ports, i);
 667                 const LilvNode* symbol = get_value(_world.world, port, lv2_symbol);
 668                 const LilvNode* value  = get_value(_world.world, port, pset_value);
 669                 if (value && lilv_node_is_float(value)) {
 670                         set_parameter(_port_indices[lilv_node_as_string(symbol)],
 671                                       lilv_node_as_float(value));
 672                 }
 673         }
 674         lilv_nodes_free(ports);
 675
 676         lilv_node_free(preset);
 677         lilv_node_free(pset_value);
 678         lilv_node_free(lv2_symbol);
 679         lilv_node_free(lv2_port);
 680
 681         return true;
 682 }
 683
 684 std::string
 685 LV2Plugin::do_save_preset(string /*name*/)
 686 {
 687         return "";
 688 }
 689
 690 void
 691 LV2Plugin::do_remove_preset(string /*name*/)
 692 {}
 693
 694 bool
 695 LV2Plugin::has_editor() const
 696 {
 697         return _impl->ui != NULL;
 698 }
 699
 700 void
 701 LV2Plugin::set_insert_info(const PluginInsert* insert)
 702 {
 703         _insert_id = insert->id();
 704 }
 705
 706 int
 707 LV2Plugin::set_state(const XMLNode& node, int version)
 708 {
 709         XMLNodeList          nodes;
 710         const XMLProperty*   prop;
 711         XMLNodeConstIterator iter;
 712         XMLNode*             child;
 713         const char*          sym;
 714         const char*          value;
 715         uint32_t             port_id;
 716         LocaleGuard          lg(X_("POSIX"));
 717
 718         if (node.name() != state_node_name()) {
 719                 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
 720                 return -1;
 721         }
 722
 723         if (version < 3000) {
 724                 nodes = node.children("port");
 725         } else {
 726                 nodes = node.children("Port");
 727         }
 728
 729         for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
 730
 731                 child = *iter;
 732
 733                 if ((prop = child->property("symbol")) != 0) {
 734                         sym = prop->value().c_str();
 735                 } else {
 736                         warning << _("LV2: port has no symbol, ignored") << endmsg;
 737                         continue;
 738                 }
 739
 740                 map<string, uint32_t>::iterator i = _port_indices.find(sym);
 741
 742                 if (i != _port_indices.end()) {
 743                         port_id = i->second;
 744                 } else {
 745                         warning << _("LV2: port has unknown index, ignored") << endmsg;
 746                         continue;
 747                 }
 748
 749                 if ((prop = child->property("value")) != 0) {
 750                         value = prop->value().c_str();
 751                 } else {
 752                         warning << _("LV2: port has no value, ignored") << endmsg;
 753                         continue;
 754                 }
 755
 756                 set_parameter(port_id, atof(value));
 757         }
 758
 759         if ((prop = node.property("state-file")) != 0) {
 760                 std::string state_path = Glib::build_filename(_session.plugins_dir(),
 761                                                               prop->value());
 762
 763                 cout << "LV2 state path " << state_path << endl;
 764
 765                 // Get LV2 Persist extension data from plugin instance
 766                 LV2_Persist* persist = (LV2_Persist*)extension_data(
 767                         "http://lv2plug.in/ns/ext/persist");
 768                 if (persist) {
 769                         cout << "Loading LV2 state from " << state_path << endl;
 770                         RDFF            file = rdff_open(state_path.c_str(), false);
 771                         LV2PersistState state(_uri_map);
 772                         state.read(file);
 773                         persist->restore(_impl->instance->lv2_handle,
 774                                          &LV2Plugin::lv2_persist_retrieve_callback,
 775                                          &state);
 776                         rdff_close(file);
 777                 } else {
 778                         warning << string_compose(
 779                             _("Plugin \"%1\% failed to return LV2 persist data"),
 780                             unique_id());
 781                 }
 782         }
 783
 784         latency_compute_run();
 785
 786         return Plugin::set_state(node, version);
 787 }
 788
 789 int
 790 LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) const
 791 {
 792         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, which);
 793
 794         LilvNode *def, *min, *max;
 795         lilv_port_get_range(_impl->plugin, port, &def, &min, &max);
 796
 797         desc.integer_step = lilv_port_has_property(_impl->plugin, port, _world.integer);
 798         desc.toggled      = lilv_port_has_property(_impl->plugin, port, _world.toggled);
 799         desc.logarithmic  = lilv_port_has_property(_impl->plugin, port, _world.logarithmic);
 800         desc.sr_dependent = lilv_port_has_property(_impl->plugin, port, _world.srate);
 801         desc.label        = lilv_node_as_string(lilv_port_get_name(_impl->plugin, port));
 802         desc.lower        = min ? lilv_node_as_float(min) : 0.0f;
 803         desc.upper        = max ? lilv_node_as_float(max) : 1.0f;
 804         if (desc.sr_dependent) {
 805                 desc.lower *= _session.frame_rate ();
 806                 desc.upper *= _session.frame_rate ();
 807         }
 808
 809         desc.min_unbound  = false; // TODO: LV2 extension required
 810         desc.max_unbound  = false; // TODO: LV2 extension required
 811
 812         if (desc.integer_step) {
 813                 desc.step      = 1.0;
 814                 desc.smallstep = 0.1;
 815                 desc.largestep = 10.0;
 816         } else {
 817                 const float delta = desc.upper - desc.lower;
 818                 desc.step      = delta / 1000.0f;
 819                 desc.smallstep = delta / 10000.0f;
 820                 desc.largestep = delta / 10.0f;
 821         }
 822
 823         lilv_node_free(def);
 824         lilv_node_free(min);
 825         lilv_node_free(max);
 826
 827         return 0;
 828 }
 829
 830 string
 831 LV2Plugin::describe_parameter(Evoral::Parameter which)
 832 {
 833         if (( which.type() == PluginAutomation) && ( which.id() < parameter_count()) ) {
 834                 LilvNode* name = lilv_port_get_name(_impl->plugin,
 835                                                     lilv_plugin_get_port_by_index(_impl->plugin, which.id()));
 836                 string ret(lilv_node_as_string(name));
 837                 lilv_node_free(name);
 838                 return ret;
 839         } else {
 840                 return "??";
 841         }
 842 }
 843
 844 framecnt_t
 845 LV2Plugin::signal_latency() const
 846 {
 847         if (_latency_control_port) {
 848                 return (framecnt_t)floor(*_latency_control_port);
 849         } else {
 850                 return 0;
 851         }
 852 }
 853
 854 set<Evoral::Parameter>
 855 LV2Plugin::automatable() const
 856 {
 857         set<Evoral::Parameter> ret;
 858
 859         for (uint32_t i = 0; i < parameter_count(); ++i) {
 860                 if (parameter_is_input(i) && parameter_is_control(i)) {
 861                         ret.insert(ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
 862                 }
 863         }
 864
 865         return ret;
 866 }
 867
 868 void
 869 LV2Plugin::activate()
 870 {
 871         DEBUG_TRACE(DEBUG::LV2, string_compose("%1 activate\n", name()));
 872
 873         if (!_was_activated) {
 874                 lilv_instance_activate(_impl->instance);
 875                 _was_activated = true;
 876         }
 877 }
 878
 879 void
 880 LV2Plugin::deactivate()
 881 {
 882         DEBUG_TRACE(DEBUG::LV2, string_compose("%1 deactivate\n", name()));
 883
 884         if (_was_activated) {
 885                 lilv_instance_deactivate(_impl->instance);
 886                 _was_activated = false;
 887         }
 888 }
 889
 890 void
 891 LV2Plugin::cleanup()
 892 {
 893         DEBUG_TRACE(DEBUG::LV2, string_compose("%1 cleanup\n", name()));
 894
 895         activate();
 896         deactivate();
 897         lilv_instance_free(_impl->instance);
 898         _impl->instance = NULL;
 899 }
 900
 901 int
 902 LV2Plugin::connect_and_run(BufferSet& bufs,
 903         ChanMapping in_map, ChanMapping out_map,
 904         pframes_t nframes, framecnt_t offset)
 905 {
 906         DEBUG_TRACE(DEBUG::LV2, string_compose("%1 run %2 offset %3\n", name(), nframes, offset));
 907         Plugin::connect_and_run(bufs, in_map, out_map, nframes, offset);
 908
 909         cycles_t then = get_cycles();
 910
 911         uint32_t audio_in_index  = 0;
 912         uint32_t audio_out_index = 0;
 913         uint32_t midi_in_index   = 0;
 914         uint32_t midi_out_index  = 0;
 915         for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
 916                 if (parameter_is_audio(port_index)) {
 917                         if (parameter_is_input(port_index)) {
 918                                 const uint32_t buf_index = in_map.get(DataType::AUDIO, audio_in_index++);
 919                                 lilv_instance_connect_port(_impl->instance, port_index,
 920                                                            bufs.get_audio(buf_index).data(offset));
 921                         } else if (parameter_is_output(port_index)) {
 922                                 const uint32_t buf_index = out_map.get(DataType::AUDIO, audio_out_index++);
 923                                 //cerr << port_index << " : " << " AUDIO OUT " << buf_index << endl;
 924                                 lilv_instance_connect_port(_impl->instance, port_index,
 925                                                            bufs.get_audio(buf_index).data(offset));
 926                         }
 927                 } else if (parameter_is_midi(port_index)) {
 928                         if (parameter_is_input(port_index)) {
 929                                 const uint32_t buf_index = in_map.get(DataType::MIDI, midi_in_index++);
 930                                 lilv_instance_connect_port(_impl->instance, port_index,
 931                                                            bufs.get_lv2_midi(true, buf_index).data());
 932                         } else if (parameter_is_output(port_index)) {
 933                                 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
 934                                 lilv_instance_connect_port(_impl->instance, port_index,
 935                                                            bufs.get_lv2_midi(false, buf_index).data());
 936                         }
 937                 } else if (!parameter_is_control(port_index)) {
 938                         // Optional port (it'd better be if we've made it this far...)
 939                         lilv_instance_connect_port(_impl->instance, port_index, NULL);
 940                 }
 941         }
 942
 943         run(nframes);
 944
 945         midi_out_index = 0;
 946         for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
 947                 if (parameter_is_midi(port_index) && parameter_is_output(port_index)) {
 948                         const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
 949                         bufs.flush_lv2_midi(true, buf_index);
 950                 }
 951         }
 952
 953         cycles_t now = get_cycles();
 954         set_cycles((uint32_t)(now - then));
 955
 956         return 0;
 957 }
 958
 959 bool
 960 LV2Plugin::parameter_is_control(uint32_t param) const
 961 {
 962         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, param);
 963         return lilv_port_is_a(_impl->plugin, port, _world.control_class);
 964 }
 965
 966 bool
 967 LV2Plugin::parameter_is_audio(uint32_t param) const
 968 {
 969         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, param);
 970         return lilv_port_is_a(_impl->plugin, port, _world.audio_class);
 971 }
 972
 973 bool
 974 LV2Plugin::parameter_is_midi(uint32_t param) const
 975 {
 976         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, param);
 977         return lilv_port_is_a(_impl->plugin, port, _world.event_class);
 978         //      && lilv_port_supports_event(_impl->plugin, port, _world.midi_class);
 979 }
 980
 981 bool
 982 LV2Plugin::parameter_is_output(uint32_t param) const
 983 {
 984         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, param);
 985         return lilv_port_is_a(_impl->plugin, port, _world.output_class);
 986 }
 987
 988 bool
 989 LV2Plugin::parameter_is_input(uint32_t param) const
 990 {
 991         const LilvPort* port = lilv_plugin_get_port_by_index(_impl->plugin, param);
 992         return lilv_port_is_a(_impl->plugin, port, _world.input_class);
 993 }
 994
 995 void
 996 LV2Plugin::print_parameter(uint32_t param, char* buf, uint32_t len) const
 997 {
 998         if (buf && len) {
 999                 if (param < parameter_count()) {
1000                         snprintf(buf, len, "%.3f", get_parameter(param));
1001                 } else {
1002                         strcat(buf, "0");
1003                 }
1004         }
1005 }
1006
1007 boost::shared_ptr<Plugin::ScalePoints>
1008 LV2Plugin::get_scale_points(uint32_t port_index) const
1009 {
1010         const LilvPort*  port   = lilv_plugin_get_port_by_index(_impl->plugin, port_index);
1011         LilvScalePoints* points = lilv_port_get_scale_points(_impl->plugin, port);
1012
1013         boost::shared_ptr<Plugin::ScalePoints> ret;
1014         if (!points) {
1015                 return ret;
1016         }
1017
1018         ret = boost::shared_ptr<Plugin::ScalePoints>(new ScalePoints());
1019
1020         LILV_FOREACH(scale_points, i, points) {
1021                 const LilvScalePoint* p     = lilv_scale_points_get(points, i);
1022                 const LilvNode*       label = lilv_scale_point_get_label(p);
1023                 const LilvNode*       value = lilv_scale_point_get_value(p);
1024                 if (label && (lilv_node_is_float(value) || lilv_node_is_int(value))) {
1025                         ret->insert(make_pair(lilv_node_as_string(label),
1026                                               lilv_node_as_float(value)));
1027                 }
1028         }
1029
1030         lilv_scale_points_free(points);
1031         return ret;
1032 }
1033
1034 void
1035 LV2Plugin::run(pframes_t nframes)
1036 {
1037         for (uint32_t i = 0; i < parameter_count(); ++i) {
1038                 if (parameter_is_control(i) && parameter_is_input(i)) {
1039                         _control_data[i] = _shadow_data[i];
1040                 }
1041         }
1042
1043         lilv_instance_run(_impl->instance, nframes);
1044 }
1045
1046 void
1047 LV2Plugin::latency_compute_run()
1048 {
1049         if (!_latency_control_port) {
1050                 return;
1051         }
1052
1053         // Run the plugin so that it can set its latency parameter
1054
1055         activate();
1056
1057         uint32_t port_index = 0;
1058         uint32_t in_index   = 0;
1059         uint32_t out_index  = 0;
1060
1061         const framecnt_t bufsize = 1024;
1062         float            buffer[bufsize];
1063
1064         memset(buffer, 0, sizeof(float) * bufsize);
1065
1066         // FIXME: Ensure plugins can handle in-place processing
1067
1068         port_index = 0;
1069
1070         while (port_index < parameter_count()) {
1071                 if (parameter_is_audio(port_index)) {
1072                         if (parameter_is_input(port_index)) {
1073                                 lilv_instance_connect_port(_impl->instance, port_index, buffer);
1074                                 in_index++;
1075                         } else if (parameter_is_output(port_index)) {
1076                                 lilv_instance_connect_port(_impl->instance, port_index, buffer);
1077                                 out_index++;
1078                         }
1079                 }
1080                 port_index++;
1081         }
1082
1083         run(bufsize);
1084         deactivate();
1085 }
1086
1087 LV2World::LV2World()
1088         : world(lilv_world_new())
1089 {
1090         lilv_world_load_all(world);
1091         input_class     = lilv_new_uri(world, LILV_URI_INPUT_PORT);
1092         output_class    = lilv_new_uri(world, LILV_URI_OUTPUT_PORT);
1093         control_class   = lilv_new_uri(world, LILV_URI_CONTROL_PORT);
1094         audio_class     = lilv_new_uri(world, LILV_URI_AUDIO_PORT);
1095         event_class     = lilv_new_uri(world, LILV_URI_EVENT_PORT);
1096         midi_class      = lilv_new_uri(world, LILV_URI_MIDI_EVENT);
1097         in_place_broken = lilv_new_uri(world, LILV_NS_LV2 "inPlaceBroken");
1098         integer         = lilv_new_uri(world, LILV_NS_LV2 "integer");
1099         toggled         = lilv_new_uri(world, LILV_NS_LV2 "toggled");
1100         srate           = lilv_new_uri(world, LILV_NS_LV2 "sampleRate");
1101         gtk_gui         = lilv_new_uri(world, NS_UI "GtkUI");
1102         external_gui    = lilv_new_uri(world, NS_UI "external");
1103         logarithmic     = lilv_new_uri(world, "http://lv2plug.in/ns/dev/extportinfo#logarithmic");
1104 }
1105
1106 LV2World::~LV2World()
1107 {
1108         lilv_node_free(input_class);
1109         lilv_node_free(output_class);
1110         lilv_node_free(control_class);
1111         lilv_node_free(audio_class);
1112         lilv_node_free(event_class);
1113         lilv_node_free(midi_class);
1114         lilv_node_free(in_place_broken);
1115 }
1116
1117 LV2PluginInfo::LV2PluginInfo (void* c_plugin)
1118         : _c_plugin(c_plugin)
1119 {
1120         type = ARDOUR::LV2;
1121 }
1122
1123 LV2PluginInfo::~LV2PluginInfo()
1124 {}
1125
1126 PluginPtr
1127 LV2PluginInfo::load(Session& session)
1128 {
1129         try {
1130                 PluginPtr plugin;
1131
1132                 plugin.reset(new LV2Plugin(session.engine(), session,
1133                                            (LilvPlugin*)_c_plugin,
1134                                            session.frame_rate()));
1135
1136                 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
1137                 return plugin;
1138         } catch (failed_constructor& err) {
1139                 return PluginPtr((Plugin*)0);
1140         }
1141
1142         return PluginPtr();
1143 }
1144
1145 PluginInfoList*
1146 LV2PluginInfo::discover()
1147 {
1148         PluginInfoList*    plugs   = new PluginInfoList;
1149         const LilvPlugins* plugins = lilv_world_get_all_plugins(_world.world);
1150
1151         cerr << "LV2: Discovering " << lilv_plugins_size(plugins) << " plugins" << endl;
1152
1153         LILV_FOREACH(plugins, i, plugins) {
1154                 const LilvPlugin* p = lilv_plugins_get(plugins, i);
1155                 LV2PluginInfoPtr  info(new LV2PluginInfo((void*)p));
1156
1157                 LilvNode* name = lilv_plugin_get_name(p);
1158                 if (!name) {
1159                         cerr << "LV2: invalid plugin\n";
1160                         continue;
1161                 }
1162
1163                 info->type = LV2;
1164
1165                 info->name = string(lilv_node_as_string(name));
1166                 lilv_node_free(name);
1167
1168                 const LilvPluginClass* pclass = lilv_plugin_get_class(p);
1169                 const LilvNode*        label  = lilv_plugin_class_get_label(pclass);
1170                 info->category = lilv_node_as_string(label);
1171
1172                 LilvNode* author_name = lilv_plugin_get_author_name(p);
1173                 info->creator = author_name ? string(lilv_node_as_string(author_name)) : "Unknown";
1174                 lilv_node_free(author_name);
1175
1176                 info->path = "/NOPATH"; // Meaningless for LV2
1177
1178                 info->n_inputs.set_audio(
1179                         lilv_plugin_get_num_ports_of_class(
1180                                 p, _world.input_class, _world.audio_class, NULL));
1181                 info->n_inputs.set_midi(
1182                         lilv_plugin_get_num_ports_of_class(
1183                                 p, _world.input_class, _world.event_class, NULL));
1184
1185                 info->n_outputs.set_audio(
1186                         lilv_plugin_get_num_ports_of_class(
1187                                 p, _world.output_class, _world.audio_class, NULL));
1188                 info->n_outputs.set_midi(
1189                         lilv_plugin_get_num_ports_of_class(
1190                                 p, _world.output_class, _world.event_class, NULL));
1191
1192                 info->unique_id = lilv_node_as_uri(lilv_plugin_get_uri(p));
1193                 info->index     = 0; // Meaningless for LV2
1194
1195                 plugs->push_back(info);
1196         }
1197
1198         cerr << "Done LV2 discovery" << endl;
1199
1200         return plugs;
1201 }