2 Copyright (C) 2008-2011 Paul Davis
3 Author: David Robillard
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.
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.
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.
30 #include "pbd/compose.h"
31 #include "pbd/error.h"
32 #include "pbd/pathscanner.h"
33 #include "pbd/xml++.h"
35 #include "ardour/ardour.h"
36 #include "ardour/audio_buffer.h"
37 #include "ardour/audioengine.h"
38 #include "ardour/debug.h"
39 #include "ardour/lv2_event_buffer.h"
40 #include "ardour/lv2_plugin.h"
41 #include "ardour/session.h"
43 #include "pbd/stl_delete.h"
48 #include "lv2ext/lv2_persist.h"
49 #include "lv2_pfile.h"
51 #define NS_DC "http://dublincore.org/documents/dcmi-namespace/"
52 #define NS_LV2 "http://lv2plug.in/ns/lv2core#"
53 #define NS_PSET "http://lv2plug.in/ns/dev/presets#"
54 #define NS_UI "http://lv2plug.in/ns/extensions/ui#"
57 using namespace ARDOUR;
60 URIMap LV2Plugin:: _uri_map;
61 uint32_t LV2Plugin::_midi_event_type = _uri_map.uri_to_id(
62 "http://lv2plug.in/ns/ext/event",
63 "http://lv2plug.in/ns/ext/midi#MidiEvent");
65 LV2Plugin::LV2Plugin (AudioEngine& engine,
70 : Plugin(engine, session)
74 init(world, plugin, rate);
77 LV2Plugin::LV2Plugin (const LV2Plugin& other)
79 , _world(other._world)
82 init(other._world, other._plugin, other._sample_rate);
84 for (uint32_t i = 0; i < parameter_count(); ++i) {
85 _control_data[i] = other._shadow_data[i];
86 _shadow_data[i] = other._shadow_data[i];
91 LV2Plugin::init(LV2World& world, SLV2Plugin plugin, framecnt_t rate)
93 DEBUG_TRACE(DEBUG::LV2, "LV2 plugin init\n");
100 _latency_control_port = 0;
101 _was_activated = false;
103 _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access";
104 _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
105 _persist_feature.URI = "http://lv2plug.in/ns/ext/persist";
106 _persist_feature.data = NULL;
108 SLV2Value persist_uri = slv2_value_new_uri(_world.world, _persist_feature.URI);
109 _supports_persist = slv2_plugin_has_feature(plugin, persist_uri);
110 slv2_value_free(persist_uri);
112 _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 5);
113 _features[0] = &_instance_access_feature;
114 _features[1] = &_data_access_feature;
115 _features[2] = &_persist_feature;
116 _features[3] = _uri_map.feature();
119 _instance = slv2_plugin_instantiate(plugin, rate, _features);
120 _name = slv2_plugin_get_name(plugin);
121 _author = slv2_plugin_get_author_name(plugin);
123 if (_instance == 0) {
124 error << _("LV2: Failed to instantiate plugin ")
125 << slv2_value_as_string(slv2_plugin_get_uri(plugin)) << endmsg;
126 throw failed_constructor();
129 _instance_access_feature.data = (void*)_instance->lv2_handle;
130 _data_access_extension_data.extension_data = _instance->lv2_descriptor->extension_data;
131 _data_access_feature.data = &_data_access_extension_data;
133 if (slv2_plugin_has_feature(plugin, world.in_place_broken)) {
134 error << string_compose(
135 _("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
136 slv2_value_as_string(_name)) << endmsg;
137 slv2_value_free(_name);
138 slv2_value_free(_author);
139 throw failed_constructor();
144 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
145 const bool latent = slv2_plugin_has_latency(plugin);
146 const uint32_t latency_port = (latent)
147 ? slv2_plugin_get_latency_port_index(plugin)
150 _control_data = new float[num_ports];
151 _shadow_data = new float[num_ports];
152 _defaults = new float[num_ports];
154 for (uint32_t i = 0; i < num_ports; ++i) {
155 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
156 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
158 // Store index in map so we can look up index by symbol
159 _port_indices.insert(std::make_pair(slv2_value_as_string(sym), i));
161 // Get range and default value if applicable
162 if (parameter_is_control(i)) {
164 slv2_port_get_range(plugin, port, &def, NULL, NULL);
165 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
166 slv2_value_free(def);
168 slv2_instance_connect_port(_instance, i, &_control_data[i]);
170 if (latent && ( i == latency_port) ) {
171 _latency_control_port = &_control_data[i];
172 *_latency_control_port = 0;
175 if (parameter_is_input(i)) {
176 _shadow_data[i] = default_value(i);
183 SLV2UIs uis = slv2_plugin_get_uis(_plugin);
184 if (slv2_uis_size(uis) > 0) {
185 // Look for Gtk native UI
186 for (unsigned i = 0; i < slv2_uis_size(uis); ++i) {
187 SLV2UI ui = slv2_uis_get_at(uis, i);
188 if (slv2_ui_is_a(ui, _world.gtk_gui)) {
194 // If Gtk UI is not available, try to find external UI
196 for (unsigned i = 0; i < slv2_uis_size(uis); ++i) {
197 SLV2UI ui = slv2_uis_get_at(uis, i);
198 if (slv2_ui_is_a(ui, _world.external_gui)) {
206 latency_compute_run();
209 LV2Plugin::~LV2Plugin ()
211 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 destroy\n", name()));
216 slv2_instance_free(_instance);
217 slv2_value_free(_name);
218 slv2_value_free(_author);
220 delete [] _control_data;
221 delete [] _shadow_data;
225 LV2Plugin::is_external_ui() const
227 return slv2_ui_is_a(_ui, _world.external_gui);
231 LV2Plugin::unique_id() const
233 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
237 LV2Plugin::default_value(uint32_t port)
239 return _defaults[port];
243 LV2Plugin::port_symbol(uint32_t index) const
245 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, index);
247 error << name() << ": Invalid port index " << index << endmsg;
250 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
251 return slv2_value_as_string(sym);
255 LV2Plugin::set_parameter(uint32_t which, float val)
257 DEBUG_TRACE(DEBUG::LV2, string_compose(
258 "%1 set parameter %2 to %3\n", name(), which, val));
260 if (which < slv2_plugin_get_num_ports(_plugin)) {
261 _shadow_data[which] = val;
263 warning << string_compose(
264 _("Illegal parameter number used with plugin \"%1\". "
265 "This is a bug in either %2 or the LV2 plugin <%3>"),
266 name(), PROGRAM_NAME, unique_id()) << endmsg;
269 Plugin::set_parameter(which, val);
273 LV2Plugin::get_parameter(uint32_t which) const
275 if (parameter_is_input(which)) {
276 return (float)_shadow_data[which];
278 return (float)_control_data[which];
284 LV2Plugin::nth_parameter(uint32_t n, bool& ok) const
287 for (uint32_t c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
288 if (parameter_is_control(x)) {
300 LV2Plugin::lv2_persist_store_callback(void* callback_data,
306 LV2PFile file = (LV2PFile)callback_data;
308 // FIXME: assumes URIs are mapped in the default context (or not event, at least)
309 const char* type_uri = LV2Plugin::_uri_map.id_to_uri(NULL, type);
310 cout << "LV2 PERSIST STORE " << key << " = " << value << " :: " << type_uri << endl;
311 lv2_pfile_write(file, key, value, size, type_uri);
315 LV2Plugin::lv2_persist_retrieve_callback(void* callback_data,
320 //LV2PFile file = (LV2PFile)callback_data;
321 cout << "LV2 PERSIST RETRIEVE " << key << endl;
326 LV2Plugin::add_state(XMLNode* root) const
330 LocaleGuard lg(X_("POSIX"));
332 for (uint32_t i = 0; i < parameter_count(); ++i) {
333 if (parameter_is_input(i) && parameter_is_control(i)) {
334 child = new XMLNode("Port");
335 child->add_property("symbol", port_symbol(i));
336 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
337 child->add_property("value", string(buf));
338 root->add_child_nocopy(*child);
342 if (_supports_persist) {
343 // Create state directory for this plugin instance
344 const std::string state_filename = _id.to_s() + ".lv2pfile";
345 const std::string state_path = Glib::build_filename(
346 _session.plugins_dir(), state_filename);
348 cout << "Saving LV2 plugin state to " << state_path << endl;
350 // Get LV2 Persist extension data from plugin instance
351 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
352 _instance, "http://lv2plug.in/ns/ext/persist");
354 warning << string_compose(
355 _("Plugin \"%1\% failed to return LV2 persist data"),
360 LV2PFile file = lv2_pfile_open(state_path.c_str(), true);
361 persist->save(_instance->lv2_handle, &LV2Plugin::lv2_persist_store_callback, file);
362 lv2_pfile_close(file);
364 root->add_property("state-file", state_filename);
368 static inline SLV2Value
369 get_value(SLV2Plugin p, SLV2Value subject, SLV2Value predicate)
371 SLV2Values vs = slv2_plugin_get_value_for_subject(p, subject, predicate);
372 return vs ? slv2_values_get_at(vs, 0) : NULL;
376 LV2Plugin::find_presets()
378 SLV2Value dc_title = slv2_value_new_uri(_world.world, NS_DC "title");
379 SLV2Value pset_hasPreset = slv2_value_new_uri(_world.world, NS_PSET "hasPreset");
381 SLV2Values presets = slv2_plugin_get_value(_plugin, pset_hasPreset);
382 for (unsigned i = 0; i < slv2_values_size(presets); ++i) {
383 SLV2Value preset = slv2_values_get_at(presets, i);
384 SLV2Value name = get_value(_plugin, preset, dc_title);
386 _presets.insert(std::make_pair(slv2_value_as_string(preset),
388 slv2_value_as_string(preset),
389 slv2_value_as_string(name))));
391 warning << string_compose(
392 _("Plugin \"%1\% preset \"%2%\" is missing a dc:title\n"),
393 unique_id(), slv2_value_as_string(preset));
396 slv2_values_free(presets);
398 slv2_value_free(pset_hasPreset);
399 slv2_value_free(dc_title);
403 LV2Plugin::load_preset(PresetRecord r)
405 Plugin::load_preset(r);
408 // New (>= 0.7.0) slv2 no longer supports SPARQL, but exposes blank nodes
409 // so querying ports is possible with the simple/fast API
410 SLV2Value lv2_port = slv2_value_new_uri(_world.world, NS_LV2 "port");
411 SLV2Value lv2_symbol = slv2_value_new_uri(_world.world, NS_LV2 "symbol");
412 SLV2Value pset_value = slv2_value_new_uri(_world.world, NS_PSET "value");
413 SLV2Value preset = slv2_value_new_uri(_world.world, r.uri.c_str());
415 SLV2Values ports = slv2_plugin_get_value_for_subject(_plugin, preset, lv2_port);
416 for (unsigned i = 0; i < slv2_values_size(ports); ++i) {
417 SLV2Value port = slv2_values_get_at(ports, i);
418 SLV2Value symbol = get_value(_plugin, port, lv2_symbol);
419 SLV2Value value = get_value(_plugin, port, pset_value);
420 if (value && slv2_value_is_float(value)) {
421 set_parameter(_port_indices[slv2_value_as_string(symbol)],
422 slv2_value_as_float(value));
425 slv2_values_free(ports);
427 slv2_value_free(preset);
428 slv2_value_free(pset_value);
429 slv2_value_free(lv2_symbol);
430 slv2_value_free(lv2_port);
432 const string query = string(
433 "PREFIX lv2p: <http://lv2plug.in/ns/dev/presets#>\n"
434 "PREFIX dc: <http://dublincore.org/documents/dcmi-namespace/>\n"
435 "SELECT ?sym ?val WHERE { <") + r.uri + "> lv2:port ?port . "
436 " ?port lv2:symbol ?sym ; lv2p:value ?val . }";
437 SLV2Results values = slv2_plugin_query_sparql(_plugin, query.c_str());
438 for (; !slv2_results_finished(values); slv2_results_next(values)) {
439 SLV2Value sym = slv2_results_get_binding_value(values, 0);
440 SLV2Value val = slv2_results_get_binding_value(values, 1);
441 if (slv2_value_is_float(val)) {
442 uint32_t index = _port_indices[slv2_value_as_string(sym)];
443 set_parameter(index, slv2_value_as_float(val));
446 slv2_results_free(values);
452 LV2Plugin::do_save_preset(string /*name*/)
458 LV2Plugin::do_remove_preset(string /*name*/)
462 LV2Plugin::has_editor() const
468 LV2Plugin::set_state(const XMLNode& node, int version)
471 const XMLProperty* prop;
472 XMLNodeConstIterator iter;
477 LocaleGuard lg(X_("POSIX"));
479 if (node.name() != state_node_name()) {
480 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
484 if (version < 3000) {
485 nodes = node.children("port");
487 nodes = node.children("Port");
490 for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
494 if ((prop = child->property("symbol")) != 0) {
495 sym = prop->value().c_str();
497 warning << _("LV2: port has no symbol, ignored") << endmsg;
501 map<string, uint32_t>::iterator i = _port_indices.find(sym);
503 if (i != _port_indices.end()) {
506 warning << _("LV2: port has unknown index, ignored") << endmsg;
510 if ((prop = child->property("value")) != 0) {
511 value = prop->value().c_str();
513 warning << _("LV2: port has no value, ignored") << endmsg;
517 set_parameter(port_id, atof(value));
520 if ((prop = node.property("state-file")) != 0) {
521 std::string state_path = Glib::build_filename(_session.plugins_dir(),
524 // Get LV2 Persist extension data from plugin instance
525 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
526 _instance, "http://lv2plug.in/ns/ext/persist");
528 cout << "Loading LV2 state from " << state_path << endl;
529 LV2PFile file = lv2_pfile_open(state_path.c_str(), false);
530 persist->restore(_instance->lv2_handle,
531 &LV2Plugin::lv2_persist_retrieve_callback,
533 lv2_pfile_close(file);
535 warning << string_compose(
536 _("Plugin \"%1\% failed to return LV2 persist data"),
541 latency_compute_run();
543 return Plugin::set_state(node, version);
547 LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) const
549 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
551 SLV2Value def, min, max;
552 slv2_port_get_range(_plugin, port, &def, &min, &max);
554 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
555 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
556 desc.logarithmic = slv2_port_has_property(_plugin, port, _world.logarithmic);
557 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
558 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
559 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
560 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
561 desc.min_unbound = false; // TODO: LV2 extension required
562 desc.max_unbound = false; // TODO: LV2 extension required
564 if (desc.integer_step) {
566 desc.smallstep = 0.1;
567 desc.largestep = 10.0;
569 const float delta = desc.upper - desc.lower;
570 desc.step = delta / 1000.0f;
571 desc.smallstep = delta / 10000.0f;
572 desc.largestep = delta / 10.0f;
575 slv2_value_free(def);
576 slv2_value_free(min);
577 slv2_value_free(max);
583 LV2Plugin::describe_parameter(Evoral::Parameter which)
585 if (( which.type() == PluginAutomation) && ( which.id() < parameter_count()) ) {
586 SLV2Value name = slv2_port_get_name(_plugin,
587 slv2_plugin_get_port_by_index(_plugin, which.id()));
588 string ret(slv2_value_as_string(name));
589 slv2_value_free(name);
597 LV2Plugin::signal_latency() const
599 if (_latency_control_port) {
600 return (framecnt_t)floor(*_latency_control_port);
606 set<Evoral::Parameter>
607 LV2Plugin::automatable() const
609 set<Evoral::Parameter> ret;
611 for (uint32_t i = 0; i < parameter_count(); ++i) {
612 if (parameter_is_input(i) && parameter_is_control(i)) {
613 ret.insert(ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
621 LV2Plugin::activate()
623 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 activate\n", name()));
625 if (!_was_activated) {
626 slv2_instance_activate(_instance);
627 _was_activated = true;
632 LV2Plugin::deactivate()
634 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 deactivate\n", name()));
636 if (_was_activated) {
637 slv2_instance_deactivate(_instance);
638 _was_activated = false;
645 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 cleanup\n", name()));
649 slv2_instance_free(_instance);
654 LV2Plugin::connect_and_run(BufferSet& bufs,
655 ChanMapping in_map, ChanMapping out_map,
656 pframes_t nframes, framecnt_t offset)
658 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 run %2 offset %3\n", name(), nframes, offset));
659 Plugin::connect_and_run(bufs, in_map, out_map, nframes, offset);
661 cycles_t then = get_cycles();
663 uint32_t audio_in_index = 0;
664 uint32_t audio_out_index = 0;
665 uint32_t midi_in_index = 0;
666 uint32_t midi_out_index = 0;
667 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
668 if (parameter_is_audio(port_index)) {
669 if (parameter_is_input(port_index)) {
670 const uint32_t buf_index = in_map.get(DataType::AUDIO, audio_in_index++);
671 slv2_instance_connect_port(_instance, port_index,
672 bufs.get_audio(buf_index).data(offset));
673 } else if (parameter_is_output(port_index)) {
674 const uint32_t buf_index = out_map.get(DataType::AUDIO, audio_out_index++);
675 //cerr << port_index << " : " << " AUDIO OUT " << buf_index << endl;
676 slv2_instance_connect_port(_instance, port_index,
677 bufs.get_audio(buf_index).data(offset));
679 } else if (parameter_is_midi(port_index)) {
680 if (parameter_is_input(port_index)) {
681 const uint32_t buf_index = in_map.get(DataType::MIDI, midi_in_index++);
682 slv2_instance_connect_port(_instance, port_index,
683 bufs.get_lv2_midi(true, buf_index).data());
684 } else if (parameter_is_output(port_index)) {
685 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
686 slv2_instance_connect_port(_instance, port_index,
687 bufs.get_lv2_midi(false, buf_index).data());
689 } else if (!parameter_is_control(port_index)) {
690 // Optional port (it'd better be if we've made it this far...)
691 slv2_instance_connect_port(_instance, port_index, NULL);
698 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
699 if (parameter_is_midi(port_index) && parameter_is_output(port_index)) {
700 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
701 bufs.flush_lv2_midi(true, buf_index);
705 cycles_t now = get_cycles();
706 set_cycles((uint32_t)(now - then));
712 LV2Plugin::parameter_is_control(uint32_t param) const
714 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
715 return slv2_port_is_a(_plugin, port, _world.control_class);
719 LV2Plugin::parameter_is_audio(uint32_t param) const
721 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
722 return slv2_port_is_a(_plugin, port, _world.audio_class);
726 LV2Plugin::parameter_is_midi(uint32_t param) const
728 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
729 return slv2_port_is_a(_plugin, port, _world.event_class);
730 // && slv2_port_supports_event(_plugin, port, _world.midi_class);
734 LV2Plugin::parameter_is_output(uint32_t param) const
736 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
737 return slv2_port_is_a(_plugin, port, _world.output_class);
741 LV2Plugin::parameter_is_input(uint32_t param) const
743 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
744 return slv2_port_is_a(_plugin, port, _world.input_class);
748 LV2Plugin::print_parameter(uint32_t param, char* buf, uint32_t len) const
751 if (param < parameter_count()) {
752 snprintf(buf, len, "%.3f", get_parameter(param));
760 LV2Plugin::run(pframes_t nframes)
762 for (uint32_t i = 0; i < parameter_count(); ++i) {
763 if (parameter_is_control(i) && parameter_is_input(i)) {
764 _control_data[i] = _shadow_data[i];
768 slv2_instance_run(_instance, nframes);
772 LV2Plugin::latency_compute_run()
774 if (!_latency_control_port) {
778 // Run the plugin so that it can set its latency parameter
782 uint32_t port_index = 0;
783 uint32_t in_index = 0;
784 uint32_t out_index = 0;
786 const framecnt_t bufsize = 1024;
787 float buffer[bufsize];
789 memset(buffer, 0, sizeof(float) * bufsize);
791 // FIXME: Ensure plugins can handle in-place processing
795 while (port_index < parameter_count()) {
796 if (parameter_is_audio(port_index)) {
797 if (parameter_is_input(port_index)) {
798 slv2_instance_connect_port(_instance, port_index, buffer);
800 } else if (parameter_is_output(port_index)) {
801 slv2_instance_connect_port(_instance, port_index, buffer);
813 : world(slv2_world_new())
815 slv2_world_load_all(world);
816 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
817 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
818 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
819 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
820 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
821 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
822 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
823 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
824 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
825 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
826 gtk_gui = slv2_value_new_uri(world, NS_UI "GtkUI");
827 external_gui = slv2_value_new_uri(world, NS_UI "external");
828 logarithmic = slv2_value_new_uri(world, "http://lv2plug.in/ns/dev/extportinfo#logarithmic");
831 LV2World::~LV2World()
833 slv2_value_free(input_class);
834 slv2_value_free(output_class);
835 slv2_value_free(control_class);
836 slv2_value_free(audio_class);
837 slv2_value_free(event_class);
838 slv2_value_free(midi_class);
839 slv2_value_free(in_place_broken);
842 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
843 : _lv2_world(lv2_world)
844 , _slv2_plugin(slv2_plugin)
849 LV2PluginInfo::~LV2PluginInfo()
853 LV2PluginInfo::load(Session& session)
858 plugin.reset(new LV2Plugin(session.engine(), session,
859 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin,
860 session.frame_rate()));
862 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
864 } catch (failed_constructor& err) {
865 return PluginPtr((Plugin*)0);
872 LV2PluginInfo::discover(void* lv2_world)
874 PluginInfoList* plugs = new PluginInfoList;
875 LV2World* world = (LV2World*)lv2_world;
876 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
878 cerr << "LV2: Discovering " << slv2_plugins_size(plugins) << " plugins" << endl;
880 for (unsigned i = 0; i < slv2_plugins_size(plugins); ++i) {
881 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
882 LV2PluginInfoPtr info(new LV2PluginInfo(lv2_world, p));
884 SLV2Value name = slv2_plugin_get_name(p);
887 cerr << "LV2: invalid plugin\n";
893 info->name = string(slv2_value_as_string(name));
894 slv2_value_free(name);
896 SLV2PluginClass pclass = slv2_plugin_get_class(p);
897 SLV2Value label = slv2_plugin_class_get_label(pclass);
898 info->category = slv2_value_as_string(label);
900 SLV2Value author_name = slv2_plugin_get_author_name(p);
901 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
902 slv2_value_free(author_name);
904 info->path = "/NOPATH"; // Meaningless for LV2
906 info->n_inputs.set_audio(
907 slv2_plugin_get_num_ports_of_class(
908 p, world->input_class, world->audio_class, NULL));
909 info->n_inputs.set_midi(
910 slv2_plugin_get_num_ports_of_class(
911 p, world->input_class, world->event_class, NULL));
913 info->n_outputs.set_audio(
914 slv2_plugin_get_num_ports_of_class(
915 p, world->output_class, world->audio_class, NULL));
916 info->n_outputs.set_midi(
917 slv2_plugin_get_num_ports_of_class(
918 p, world->output_class, world->event_class, NULL));
920 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
921 info->index = 0; // Meaningless for LV2
923 plugs->push_back(info);
926 cerr << "Done LV2 discovery" << endl;