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"
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)) {
299 struct PersistValue {
300 inline PersistValue(uint32_t k, const void* v, size_t s, uint32_t t, uint32_t f)
301 : key(k), value(v), size(s), type(t), flags(f)
311 struct PersistState {
312 PersistState(URIMap& map) : uri_map(map) {}
314 typedef std::map<uint32_t, std::string> URIs;
315 typedef std::map<uint32_t, PersistValue> Values;
317 uint32_t file_id_to_runtime_id(uint32_t file_id) const {
318 URIs::const_iterator i = uris.find(file_id);
319 if (i == uris.end()) {
320 error << "LV2 state refers to undefined URI ID" << endmsg;
323 return uri_map.uri_to_id(NULL, i->second.c_str());
326 int add_uri(uint32_t file_id, const char* str) {
327 // TODO: check for clashes (invalid file)
328 uris.insert(make_pair(file_id, str));
332 int add_value(uint32_t file_subject,
338 const uint32_t key = file_id_to_runtime_id(file_key);
339 const uint32_t type = file_id_to_runtime_id(file_type);
344 Values::const_iterator i = values.find(key);
345 if (i != values.end()) {
346 error << "LV2 state contains duplicate keys" << endmsg;
349 void* value_copy = malloc(size);
350 memcpy(value_copy, value, size); // FIXME: leak
353 PersistValue(key, value_copy, size, type, flags)));
364 LV2Plugin::lv2_persist_store_callback(void* callback_data,
372 DEBUG_TRACE(DEBUG::LV2, string_compose("persist store %1\n",
373 _uri_map.id_to_uri(NULL, key)));
375 PersistState* state = (PersistState*)callback_data;
376 state->add_uri(key, _uri_map.id_to_uri(NULL, key));
377 state->add_uri(type, _uri_map.id_to_uri(NULL, type));
378 return state->add_value(subject, key, value, size, type, flags);
382 LV2Plugin::lv2_persist_retrieve_callback(void* callback_data,
389 PersistState* state = (PersistState*)callback_data;
390 PersistState::Values::const_iterator i = state->values.find(key);
391 if (i == state->values.end()) {
392 warning << "LV2 plugin attempted to retrieve nonexistent key: "
393 << _uri_map.id_to_uri(NULL, key) << endmsg;
396 *size = i->second.size;
397 *type = i->second.type;
398 *flags = LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE; // FIXME
399 DEBUG_TRACE(DEBUG::LV2, string_compose(
400 "persist retrieve %1 = %s (size: %u, type: %u)\n",
401 _uri_map.id_to_uri(NULL, key), i->second.value, *size, *type));
402 return i->second.value;
406 LV2Plugin::add_state(XMLNode* root) const
410 LocaleGuard lg(X_("POSIX"));
412 for (uint32_t i = 0; i < parameter_count(); ++i) {
413 if (parameter_is_input(i) && parameter_is_control(i)) {
414 child = new XMLNode("Port");
415 child->add_property("symbol", port_symbol(i));
416 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
417 child->add_property("value", string(buf));
418 root->add_child_nocopy(*child);
422 if (_supports_persist) {
423 // Create state directory for this plugin instance
424 const std::string state_filename = _id.to_s() + ".rdff";
425 const std::string state_path = Glib::build_filename(
426 _session.plugins_dir(), state_filename);
428 cout << "Saving LV2 plugin state to " << state_path << endl;
430 // Get LV2 Persist extension data from plugin instance
431 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
432 _instance, "http://lv2plug.in/ns/ext/persist");
434 warning << string_compose(
435 _("Plugin \"%1\% failed to return LV2 persist data"),
440 // Save plugin state to state object
441 PersistState state(_uri_map);
442 persist->save(_instance->lv2_handle,
443 &LV2Plugin::lv2_persist_store_callback,
447 RDFF file = rdff_open(state_path.c_str(), true);
449 // Write all referenced URIs to state file
450 for (PersistState::URIs::const_iterator i = state.uris.begin();
451 i != state.uris.end(); ++i) {
458 // Write all values to state file
459 for (PersistState::Values::const_iterator i = state.values.begin();
460 i != state.values.end(); ++i) {
461 const uint32_t key = i->first;
462 const PersistValue& val = i->second;
463 rdff_write_triple(file,
474 root->add_property("state-file", state_filename);
478 static inline SLV2Value
479 get_value(SLV2Plugin p, SLV2Value subject, SLV2Value predicate)
481 SLV2Values vs = slv2_plugin_get_value_for_subject(p, subject, predicate);
482 return vs ? slv2_values_get_at(vs, 0) : NULL;
486 LV2Plugin::find_presets()
488 SLV2Value dc_title = slv2_value_new_uri(_world.world, NS_DC "title");
489 SLV2Value pset_hasPreset = slv2_value_new_uri(_world.world, NS_PSET "hasPreset");
491 SLV2Values presets = slv2_plugin_get_value(_plugin, pset_hasPreset);
492 for (unsigned i = 0; i < slv2_values_size(presets); ++i) {
493 SLV2Value preset = slv2_values_get_at(presets, i);
494 SLV2Value name = get_value(_plugin, preset, dc_title);
496 _presets.insert(std::make_pair(slv2_value_as_string(preset),
498 slv2_value_as_string(preset),
499 slv2_value_as_string(name))));
501 warning << string_compose(
502 _("Plugin \"%1\% preset \"%2%\" is missing a dc:title\n"),
503 unique_id(), slv2_value_as_string(preset));
506 slv2_values_free(presets);
508 slv2_value_free(pset_hasPreset);
509 slv2_value_free(dc_title);
513 LV2Plugin::load_preset(PresetRecord r)
515 Plugin::load_preset(r);
518 // New (>= 0.7.0) slv2 no longer supports SPARQL, but exposes blank nodes
519 // so querying ports is possible with the simple/fast API
520 SLV2Value lv2_port = slv2_value_new_uri(_world.world, NS_LV2 "port");
521 SLV2Value lv2_symbol = slv2_value_new_uri(_world.world, NS_LV2 "symbol");
522 SLV2Value pset_value = slv2_value_new_uri(_world.world, NS_PSET "value");
523 SLV2Value preset = slv2_value_new_uri(_world.world, r.uri.c_str());
525 SLV2Values ports = slv2_plugin_get_value_for_subject(_plugin, preset, lv2_port);
526 for (unsigned i = 0; i < slv2_values_size(ports); ++i) {
527 SLV2Value port = slv2_values_get_at(ports, i);
528 SLV2Value symbol = get_value(_plugin, port, lv2_symbol);
529 SLV2Value value = get_value(_plugin, port, pset_value);
530 if (value && slv2_value_is_float(value)) {
531 set_parameter(_port_indices[slv2_value_as_string(symbol)],
532 slv2_value_as_float(value));
535 slv2_values_free(ports);
537 slv2_value_free(preset);
538 slv2_value_free(pset_value);
539 slv2_value_free(lv2_symbol);
540 slv2_value_free(lv2_port);
542 const string query = string(
543 "PREFIX lv2p: <http://lv2plug.in/ns/dev/presets#>\n"
544 "PREFIX dc: <http://dublincore.org/documents/dcmi-namespace/>\n"
545 "SELECT ?sym ?val WHERE { <") + r.uri + "> lv2:port ?port . "
546 " ?port lv2:symbol ?sym ; lv2p:value ?val . }";
547 SLV2Results values = slv2_plugin_query_sparql(_plugin, query.c_str());
548 for (; !slv2_results_finished(values); slv2_results_next(values)) {
549 SLV2Value sym = slv2_results_get_binding_value(values, 0);
550 SLV2Value val = slv2_results_get_binding_value(values, 1);
551 if (slv2_value_is_float(val)) {
552 uint32_t index = _port_indices[slv2_value_as_string(sym)];
553 set_parameter(index, slv2_value_as_float(val));
556 slv2_results_free(values);
562 LV2Plugin::do_save_preset(string /*name*/)
568 LV2Plugin::do_remove_preset(string /*name*/)
572 LV2Plugin::has_editor() const
578 LV2Plugin::set_state(const XMLNode& node, int version)
581 const XMLProperty* prop;
582 XMLNodeConstIterator iter;
587 LocaleGuard lg(X_("POSIX"));
589 if (node.name() != state_node_name()) {
590 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
594 if (version < 3000) {
595 nodes = node.children("port");
597 nodes = node.children("Port");
600 for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
604 if ((prop = child->property("symbol")) != 0) {
605 sym = prop->value().c_str();
607 warning << _("LV2: port has no symbol, ignored") << endmsg;
611 map<string, uint32_t>::iterator i = _port_indices.find(sym);
613 if (i != _port_indices.end()) {
616 warning << _("LV2: port has unknown index, ignored") << endmsg;
620 if ((prop = child->property("value")) != 0) {
621 value = prop->value().c_str();
623 warning << _("LV2: port has no value, ignored") << endmsg;
627 set_parameter(port_id, atof(value));
630 if ((prop = node.property("state-file")) != 0) {
631 std::string state_path = Glib::build_filename(_session.plugins_dir(),
634 // Get LV2 Persist extension data from plugin instance
635 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
636 _instance, "http://lv2plug.in/ns/ext/persist");
638 cout << "Loading LV2 state from " << state_path << endl;
639 RDFF file = rdff_open(state_path.c_str(), false);
641 PersistState state(_uri_map);
643 // Load file into state object
644 RDFFChunk* chunk = (RDFFChunk*)malloc(sizeof(RDFFChunk));
646 while (!rdff_read_chunk(file, &chunk)) {
647 if (rdff_chunk_is_uri(chunk)) {
648 RDFFURIChunk* body = (RDFFURIChunk*)chunk->data;
649 printf("READ URI %u: %s\n", body->id, body->uri);
650 state.add_uri(body->id, body->uri);
651 } else if (rdff_chunk_is_triple(chunk)) {
652 RDFFTripleChunk* body = (RDFFTripleChunk*)chunk->data;
653 printf("READ VAL %u = %s (size: %u type: %u)\n",
654 body->predicate, body->object,
655 body->object_size, body->object_type);
656 state.add_value(body->subject,
661 LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE);
666 persist->restore(_instance->lv2_handle,
667 &LV2Plugin::lv2_persist_retrieve_callback,
671 warning << string_compose(
672 _("Plugin \"%1\% failed to return LV2 persist data"),
677 latency_compute_run();
679 return Plugin::set_state(node, version);
683 LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) const
685 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
687 SLV2Value def, min, max;
688 slv2_port_get_range(_plugin, port, &def, &min, &max);
690 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
691 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
692 desc.logarithmic = slv2_port_has_property(_plugin, port, _world.logarithmic);
693 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
694 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
695 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
696 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
697 desc.min_unbound = false; // TODO: LV2 extension required
698 desc.max_unbound = false; // TODO: LV2 extension required
700 if (desc.integer_step) {
702 desc.smallstep = 0.1;
703 desc.largestep = 10.0;
705 const float delta = desc.upper - desc.lower;
706 desc.step = delta / 1000.0f;
707 desc.smallstep = delta / 10000.0f;
708 desc.largestep = delta / 10.0f;
711 slv2_value_free(def);
712 slv2_value_free(min);
713 slv2_value_free(max);
719 LV2Plugin::describe_parameter(Evoral::Parameter which)
721 if (( which.type() == PluginAutomation) && ( which.id() < parameter_count()) ) {
722 SLV2Value name = slv2_port_get_name(_plugin,
723 slv2_plugin_get_port_by_index(_plugin, which.id()));
724 string ret(slv2_value_as_string(name));
725 slv2_value_free(name);
733 LV2Plugin::signal_latency() const
735 if (_latency_control_port) {
736 return (framecnt_t)floor(*_latency_control_port);
742 set<Evoral::Parameter>
743 LV2Plugin::automatable() const
745 set<Evoral::Parameter> ret;
747 for (uint32_t i = 0; i < parameter_count(); ++i) {
748 if (parameter_is_input(i) && parameter_is_control(i)) {
749 ret.insert(ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
757 LV2Plugin::activate()
759 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 activate\n", name()));
761 if (!_was_activated) {
762 slv2_instance_activate(_instance);
763 _was_activated = true;
768 LV2Plugin::deactivate()
770 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 deactivate\n", name()));
772 if (_was_activated) {
773 slv2_instance_deactivate(_instance);
774 _was_activated = false;
781 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 cleanup\n", name()));
785 slv2_instance_free(_instance);
790 LV2Plugin::connect_and_run(BufferSet& bufs,
791 ChanMapping in_map, ChanMapping out_map,
792 pframes_t nframes, framecnt_t offset)
794 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 run %2 offset %3\n", name(), nframes, offset));
795 Plugin::connect_and_run(bufs, in_map, out_map, nframes, offset);
797 cycles_t then = get_cycles();
799 uint32_t audio_in_index = 0;
800 uint32_t audio_out_index = 0;
801 uint32_t midi_in_index = 0;
802 uint32_t midi_out_index = 0;
803 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
804 if (parameter_is_audio(port_index)) {
805 if (parameter_is_input(port_index)) {
806 const uint32_t buf_index = in_map.get(DataType::AUDIO, audio_in_index++);
807 slv2_instance_connect_port(_instance, port_index,
808 bufs.get_audio(buf_index).data(offset));
809 } else if (parameter_is_output(port_index)) {
810 const uint32_t buf_index = out_map.get(DataType::AUDIO, audio_out_index++);
811 //cerr << port_index << " : " << " AUDIO OUT " << buf_index << endl;
812 slv2_instance_connect_port(_instance, port_index,
813 bufs.get_audio(buf_index).data(offset));
815 } else if (parameter_is_midi(port_index)) {
816 if (parameter_is_input(port_index)) {
817 const uint32_t buf_index = in_map.get(DataType::MIDI, midi_in_index++);
818 slv2_instance_connect_port(_instance, port_index,
819 bufs.get_lv2_midi(true, buf_index).data());
820 } else if (parameter_is_output(port_index)) {
821 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
822 slv2_instance_connect_port(_instance, port_index,
823 bufs.get_lv2_midi(false, buf_index).data());
825 } else if (!parameter_is_control(port_index)) {
826 // Optional port (it'd better be if we've made it this far...)
827 slv2_instance_connect_port(_instance, port_index, NULL);
834 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
835 if (parameter_is_midi(port_index) && parameter_is_output(port_index)) {
836 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
837 bufs.flush_lv2_midi(true, buf_index);
841 cycles_t now = get_cycles();
842 set_cycles((uint32_t)(now - then));
848 LV2Plugin::parameter_is_control(uint32_t param) const
850 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
851 return slv2_port_is_a(_plugin, port, _world.control_class);
855 LV2Plugin::parameter_is_audio(uint32_t param) const
857 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
858 return slv2_port_is_a(_plugin, port, _world.audio_class);
862 LV2Plugin::parameter_is_midi(uint32_t param) const
864 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
865 return slv2_port_is_a(_plugin, port, _world.event_class);
866 // && slv2_port_supports_event(_plugin, port, _world.midi_class);
870 LV2Plugin::parameter_is_output(uint32_t param) const
872 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
873 return slv2_port_is_a(_plugin, port, _world.output_class);
877 LV2Plugin::parameter_is_input(uint32_t param) const
879 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
880 return slv2_port_is_a(_plugin, port, _world.input_class);
884 LV2Plugin::print_parameter(uint32_t param, char* buf, uint32_t len) const
887 if (param < parameter_count()) {
888 snprintf(buf, len, "%.3f", get_parameter(param));
896 LV2Plugin::run(pframes_t nframes)
898 for (uint32_t i = 0; i < parameter_count(); ++i) {
899 if (parameter_is_control(i) && parameter_is_input(i)) {
900 _control_data[i] = _shadow_data[i];
904 slv2_instance_run(_instance, nframes);
908 LV2Plugin::latency_compute_run()
910 if (!_latency_control_port) {
914 // Run the plugin so that it can set its latency parameter
918 uint32_t port_index = 0;
919 uint32_t in_index = 0;
920 uint32_t out_index = 0;
922 const framecnt_t bufsize = 1024;
923 float buffer[bufsize];
925 memset(buffer, 0, sizeof(float) * bufsize);
927 // FIXME: Ensure plugins can handle in-place processing
931 while (port_index < parameter_count()) {
932 if (parameter_is_audio(port_index)) {
933 if (parameter_is_input(port_index)) {
934 slv2_instance_connect_port(_instance, port_index, buffer);
936 } else if (parameter_is_output(port_index)) {
937 slv2_instance_connect_port(_instance, port_index, buffer);
949 : world(slv2_world_new())
951 slv2_world_load_all(world);
952 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
953 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
954 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
955 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
956 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
957 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
958 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
959 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
960 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
961 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
962 gtk_gui = slv2_value_new_uri(world, NS_UI "GtkUI");
963 external_gui = slv2_value_new_uri(world, NS_UI "external");
964 logarithmic = slv2_value_new_uri(world, "http://lv2plug.in/ns/dev/extportinfo#logarithmic");
967 LV2World::~LV2World()
969 slv2_value_free(input_class);
970 slv2_value_free(output_class);
971 slv2_value_free(control_class);
972 slv2_value_free(audio_class);
973 slv2_value_free(event_class);
974 slv2_value_free(midi_class);
975 slv2_value_free(in_place_broken);
978 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
979 : _lv2_world(lv2_world)
980 , _slv2_plugin(slv2_plugin)
985 LV2PluginInfo::~LV2PluginInfo()
989 LV2PluginInfo::load(Session& session)
994 plugin.reset(new LV2Plugin(session.engine(), session,
995 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin,
996 session.frame_rate()));
998 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
1000 } catch (failed_constructor& err) {
1001 return PluginPtr((Plugin*)0);
1008 LV2PluginInfo::discover(void* lv2_world)
1010 PluginInfoList* plugs = new PluginInfoList;
1011 LV2World* world = (LV2World*)lv2_world;
1012 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
1014 cerr << "LV2: Discovering " << slv2_plugins_size(plugins) << " plugins" << endl;
1016 for (unsigned i = 0; i < slv2_plugins_size(plugins); ++i) {
1017 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
1018 LV2PluginInfoPtr info(new LV2PluginInfo(lv2_world, p));
1020 SLV2Value name = slv2_plugin_get_name(p);
1023 cerr << "LV2: invalid plugin\n";
1029 info->name = string(slv2_value_as_string(name));
1030 slv2_value_free(name);
1032 SLV2PluginClass pclass = slv2_plugin_get_class(p);
1033 SLV2Value label = slv2_plugin_class_get_label(pclass);
1034 info->category = slv2_value_as_string(label);
1036 SLV2Value author_name = slv2_plugin_get_author_name(p);
1037 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
1038 slv2_value_free(author_name);
1040 info->path = "/NOPATH"; // Meaningless for LV2
1042 info->n_inputs.set_audio(
1043 slv2_plugin_get_num_ports_of_class(
1044 p, world->input_class, world->audio_class, NULL));
1045 info->n_inputs.set_midi(
1046 slv2_plugin_get_num_ports_of_class(
1047 p, world->input_class, world->event_class, NULL));
1049 info->n_outputs.set_audio(
1050 slv2_plugin_get_num_ports_of_class(
1051 p, world->output_class, world->audio_class, NULL));
1052 info->n_outputs.set_midi(
1053 slv2_plugin_get_num_ports_of_class(
1054 p, world->output_class, world->event_class, NULL));
1056 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
1057 info->index = 0; // Meaningless for LV2
1059 plugs->push_back(info);
1062 cerr << "Done LV2 discovery" << endl;