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 <boost/utility.hpp>
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"
38 #include "libardour-config.h"
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/session.h"
51 #include "lv2ext/lv2_files.h"
52 #include "lv2ext/lv2_persist.h"
55 #include <suil/suil.h>
58 #define NS_DC "http://dublincore.org/documents/dcmi-namespace/"
59 #define NS_LV2 "http://lv2plug.in/ns/lv2core#"
60 #define NS_PSET "http://lv2plug.in/ns/dev/presets#"
61 #define NS_UI "http://lv2plug.in/ns/extensions/ui#"
64 using namespace ARDOUR;
67 URIMap LV2Plugin::_uri_map;
68 uint32_t LV2Plugin::_midi_event_type = _uri_map.uri_to_id(
69 "http://lv2plug.in/ns/ext/event",
70 "http://lv2plug.in/ns/ext/midi#MidiEvent");
72 class LV2World : boost::noncopyable {
78 SLV2Value input_class; ///< Input port
79 SLV2Value output_class; ///< Output port
80 SLV2Value audio_class; ///< Audio port
81 SLV2Value control_class; ///< Control port
82 SLV2Value event_class; ///< Event port
83 SLV2Value midi_class; ///< MIDI event
84 SLV2Value in_place_broken;
89 SLV2Value external_gui;
90 SLV2Value logarithmic;
93 static LV2World _world;
95 LV2Plugin::LV2Plugin (AudioEngine& engine,
99 : Plugin(engine, session)
106 LV2Plugin::LV2Plugin (const LV2Plugin& other)
109 , _insert_id(other._insert_id)
111 init(other._plugin, other._sample_rate);
113 for (uint32_t i = 0; i < parameter_count(); ++i) {
114 _control_data[i] = other._shadow_data[i];
115 _shadow_data[i] = other._shadow_data[i];
120 LV2Plugin::init(SLV2Plugin plugin, framecnt_t rate)
122 DEBUG_TRACE(DEBUG::LV2, "init\n");
129 _latency_control_port = 0;
130 _was_activated = false;
132 _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access";
133 _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
134 _path_support_feature.URI = LV2_FILES_PATH_SUPPORT_URI;
135 _new_file_support_feature.URI = LV2_FILES_NEW_FILE_SUPPORT_URI;
136 _persist_feature.URI = "http://lv2plug.in/ns/ext/persist";
137 _persist_feature.data = NULL;
139 SLV2Value persist_uri = slv2_value_new_uri(_world.world, _persist_feature.URI);
140 _supports_persist = slv2_plugin_has_feature(plugin, persist_uri);
141 slv2_value_free(persist_uri);
143 _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 7);
144 _features[0] = &_instance_access_feature;
145 _features[1] = &_data_access_feature;
146 _features[2] = &_path_support_feature;
147 _features[3] = &_new_file_support_feature;
148 _features[4] = &_persist_feature;
149 _features[5] = _uri_map.feature();
152 LV2_Files_Path_Support* path_support = (LV2_Files_Path_Support*)malloc(
153 sizeof(LV2_Files_Path_Support));
154 path_support->host_data = this;
155 path_support->abstract_path = &lv2_files_abstract_path;
156 path_support->absolute_path = &lv2_files_absolute_path;
157 _path_support_feature.data = path_support;
159 LV2_Files_New_File_Support* new_file_support = (LV2_Files_New_File_Support*)malloc(
160 sizeof(LV2_Files_New_File_Support));
161 new_file_support->host_data = this;
162 new_file_support->new_file_path = &lv2_files_new_file_path;
163 _new_file_support_feature.data = new_file_support;
165 _instance = slv2_plugin_instantiate(plugin, rate, _features);
166 _name = slv2_plugin_get_name(plugin);
167 _author = slv2_plugin_get_author_name(plugin);
169 if (_instance == 0) {
170 error << _("LV2: Failed to instantiate plugin ")
171 << slv2_value_as_string(slv2_plugin_get_uri(plugin)) << endmsg;
172 throw failed_constructor();
175 _instance_access_feature.data = (void*)_instance->lv2_handle;
176 _data_access_extension_data.extension_data = _instance->lv2_descriptor->extension_data;
177 _data_access_feature.data = &_data_access_extension_data;
179 if (slv2_plugin_has_feature(plugin, _world.in_place_broken)) {
180 error << string_compose(
181 _("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
182 slv2_value_as_string(_name)) << endmsg;
183 slv2_value_free(_name);
184 slv2_value_free(_author);
185 throw failed_constructor();
190 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
191 const bool latent = slv2_plugin_has_latency(plugin);
192 const uint32_t latency_port = (latent)
193 ? slv2_plugin_get_latency_port_index(plugin)
196 _control_data = new float[num_ports];
197 _shadow_data = new float[num_ports];
198 _defaults = new float[num_ports];
200 for (uint32_t i = 0; i < num_ports; ++i) {
201 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
202 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
204 // Store index in map so we can look up index by symbol
205 _port_indices.insert(std::make_pair(slv2_value_as_string(sym), i));
207 // Get range and default value if applicable
208 if (parameter_is_control(i)) {
210 slv2_port_get_range(plugin, port, &def, NULL, NULL);
211 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
212 slv2_value_free(def);
214 slv2_instance_connect_port(_instance, i, &_control_data[i]);
216 if (latent && ( i == latency_port) ) {
217 _latency_control_port = &_control_data[i];
218 *_latency_control_port = 0;
221 if (parameter_is_input(i)) {
222 _shadow_data[i] = default_value(i);
229 SLV2UIs uis = slv2_plugin_get_uis(_plugin);
230 if (slv2_uis_size(uis) > 0) {
231 #if defined(HAVE_NEW_SLV2) and defined(HAVE_SUIL)
232 // Look for embeddable UI
233 SLV2Value ui_type = NULL;
234 SLV2_FOREACH(uis, u, uis) {
235 SLV2UI this_ui = slv2_uis_get(uis, u);
236 SLV2Value this_ui_type = NULL;
237 if (slv2_ui_is_supported(this_ui,
241 // TODO: Multiple UI support
243 _ui_type = this_ui_type;
248 // Look for Gtk native UI
249 for (unsigned i = 0; i < slv2_uis_size(uis); ++i) {
250 SLV2UI ui = slv2_uis_get_at(uis, i);
251 if (slv2_ui_is_a(ui, _world.gtk_gui)) {
253 _ui_type = _world.gtk_gui;
259 // If Gtk UI is not available, try to find external UI
261 for (unsigned i = 0; i < slv2_uis_size(uis); ++i) {
262 SLV2UI ui = slv2_uis_get_at(uis, i);
263 if (slv2_ui_is_a(ui, _world.external_gui)) {
265 _ui_type = _world.external_gui;
272 latency_compute_run();
275 LV2Plugin::~LV2Plugin ()
277 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 destroy\n", name()));
282 slv2_instance_free(_instance);
283 slv2_value_free(_name);
284 slv2_value_free(_author);
285 #if defined(HAVE_NEW_SLV2) and defined(HAVE_SUIL)
286 slv2_value_free(_ui_type);
288 /* _ui_type points to a global, so leave it alone */
290 delete [] _control_data;
291 delete [] _shadow_data;
295 LV2Plugin::is_external_ui() const
300 return slv2_ui_is_a(_ui, _world.external_gui);
304 LV2Plugin::unique_id() const
306 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
310 LV2Plugin::label() const
312 return slv2_value_as_string(_name);
316 LV2Plugin::name() const
318 return slv2_value_as_string(_name);
322 LV2Plugin::maker() const
324 return _author ? slv2_value_as_string (_author) : "Unknown";
328 LV2Plugin::parameter_count() const
330 return slv2_plugin_get_num_ports(_plugin);
334 LV2Plugin::default_value(uint32_t port)
336 return _defaults[port];
340 LV2Plugin::port_symbol(uint32_t index) const
342 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, index);
344 error << name() << ": Invalid port index " << index << endmsg;
347 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
348 return slv2_value_as_string(sym);
352 LV2Plugin::set_parameter(uint32_t which, float val)
354 DEBUG_TRACE(DEBUG::LV2, string_compose(
355 "%1 set parameter %2 to %3\n", name(), which, val));
357 if (which < slv2_plugin_get_num_ports(_plugin)) {
358 _shadow_data[which] = val;
360 warning << string_compose(
361 _("Illegal parameter number used with plugin \"%1\". "
362 "This is a bug in either %2 or the LV2 plugin <%3>"),
363 name(), PROGRAM_NAME, unique_id()) << endmsg;
366 Plugin::set_parameter(which, val);
370 LV2Plugin::get_parameter(uint32_t which) const
372 if (parameter_is_input(which)) {
373 return (float)_shadow_data[which];
375 return (float)_control_data[which];
381 LV2Plugin::nth_parameter(uint32_t n, bool& ok) const
384 for (uint32_t c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
385 if (parameter_is_control(x)) {
396 struct PersistValue {
397 inline PersistValue(uint32_t k, const void* v, size_t s, uint32_t t, uint32_t f)
398 : key(k), value(v), size(s), type(t), flags(f)
408 struct PersistState {
409 PersistState(URIMap& map) : uri_map(map) {}
411 typedef std::map<uint32_t, std::string> URIs;
412 typedef std::map<uint32_t, PersistValue> Values;
414 uint32_t file_id_to_runtime_id(uint32_t file_id) const {
415 URIs::const_iterator i = uris.find(file_id);
416 if (i == uris.end()) {
417 error << "LV2 state refers to undefined URI ID" << endmsg;
420 return uri_map.uri_to_id(NULL, i->second.c_str());
423 int add_uri(uint32_t file_id, const char* str) {
424 // TODO: check for clashes (invalid file)
425 uris.insert(make_pair(file_id, str));
429 int add_value(uint32_t file_key,
434 const uint32_t key = file_id_to_runtime_id(file_key);
435 const uint32_t type = file_id_to_runtime_id(file_type);
440 Values::const_iterator i = values.find(key);
441 if (i != values.end()) {
442 error << "LV2 state contains duplicate keys" << endmsg;
445 void* value_copy = malloc(size);
446 memcpy(value_copy, value, size); // FIXME: leak
449 PersistValue(key, value_copy, size, type, flags)));
460 LV2Plugin::lv2_persist_store_callback(void* host_data,
467 DEBUG_TRACE(DEBUG::LV2, string_compose(
468 "persist store %1 (size: %2, type: %3)\n",
469 _uri_map.id_to_uri(NULL, key),
471 _uri_map.id_to_uri(NULL, type)));
473 PersistState* state = (PersistState*)host_data;
474 state->add_uri(key, _uri_map.id_to_uri(NULL, key));
475 state->add_uri(type, _uri_map.id_to_uri(NULL, type));
476 return state->add_value(key, value, size, type, flags);
480 LV2Plugin::lv2_persist_retrieve_callback(void* host_data,
486 PersistState* state = (PersistState*)host_data;
487 PersistState::Values::const_iterator i = state->values.find(key);
488 if (i == state->values.end()) {
489 warning << "LV2 plugin attempted to retrieve nonexistent key: "
490 << _uri_map.id_to_uri(NULL, key) << endmsg;
493 *size = i->second.size;
494 *type = i->second.type;
495 *flags = LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE; // FIXME
496 DEBUG_TRACE(DEBUG::LV2, string_compose(
497 "persist retrieve %1 = %2 (size: %3, type: %4)\n",
498 _uri_map.id_to_uri(NULL, key),
499 i->second.value, *size, *type));
500 return i->second.value;
504 LV2Plugin::lv2_files_abstract_path(LV2_Files_Host_Data host_data,
505 const char* absolute_path)
507 LV2Plugin* me = (LV2Plugin*)host_data;
508 if (me->_insert_id == PBD::ID("0")) {
509 return g_strdup(absolute_path);
512 const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
513 me->_insert_id.to_s());
516 if (strncmp(absolute_path, state_dir.c_str(), state_dir.length())) {
517 ret = g_strdup(absolute_path);
519 const std::string path(absolute_path + state_dir.length() + 1);
520 ret = g_strndup(path.c_str(), path.length());
523 DEBUG_TRACE(DEBUG::LV2, string_compose("abstract path %1 => %2\n",
524 absolute_path, ret));
530 LV2Plugin::lv2_files_absolute_path(LV2_Files_Host_Data host_data,
531 const char* abstract_path)
533 LV2Plugin* me = (LV2Plugin*)host_data;
534 if (me->_insert_id == PBD::ID("0")) {
535 return g_strdup(abstract_path);
539 if (g_path_is_absolute(abstract_path)) {
540 ret = g_strdup(abstract_path);
542 const std::string apath(abstract_path);
543 const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
544 me->_insert_id.to_s());
545 const std::string path = Glib::build_filename(state_dir,
547 ret = g_strndup(path.c_str(), path.length());
550 DEBUG_TRACE(DEBUG::LV2, string_compose("absolute path %1 => %2\n",
551 abstract_path, ret));
557 LV2Plugin::lv2_files_new_file_path(LV2_Files_Host_Data host_data,
558 const char* relative_path)
560 LV2Plugin* me = (LV2Plugin*)host_data;
561 if (me->_insert_id == PBD::ID("0")) {
562 return g_strdup(relative_path);
565 const std::string state_dir = Glib::build_filename(me->_session.plugins_dir(),
566 me->_insert_id.to_s());
567 const std::string path = Glib::build_filename(state_dir,
570 char* dirname = g_path_get_dirname(path.c_str());
571 g_mkdir_with_parents(dirname, 0744);
574 DEBUG_TRACE(DEBUG::LV2, string_compose("new file path %1 => %2\n",
575 relative_path, path));
577 return g_strndup(path.c_str(), path.length());
581 LV2Plugin::add_state(XMLNode* root) const
583 assert(_insert_id != PBD::ID("0"));
587 LocaleGuard lg(X_("POSIX"));
589 for (uint32_t i = 0; i < parameter_count(); ++i) {
590 if (parameter_is_input(i) && parameter_is_control(i)) {
591 child = new XMLNode("Port");
592 child->add_property("symbol", port_symbol(i));
593 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
594 child->add_property("value", string(buf));
595 root->add_child_nocopy(*child);
599 if (_supports_persist) {
600 // Create state directory for this plugin instance
601 const std::string state_filename = _insert_id.to_s() + ".rdff";
602 const std::string state_path = Glib::build_filename(
603 _session.plugins_dir(), state_filename);
605 cout << "Saving LV2 plugin state to " << state_path << endl;
607 // Get LV2 Persist extension data from plugin instance
608 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
609 _instance, "http://lv2plug.in/ns/ext/persist");
611 warning << string_compose(
612 _("Plugin \"%1\% failed to return LV2 persist data"),
617 // Save plugin state to state object
618 PersistState state(_uri_map);
619 persist->save(_instance->lv2_handle,
620 &LV2Plugin::lv2_persist_store_callback,
624 RDFF file = rdff_open(state_path.c_str(), true);
626 // Write all referenced URIs to state file
627 for (PersistState::URIs::const_iterator i = state.uris.begin();
628 i != state.uris.end(); ++i) {
635 // Write all values to state file
636 for (PersistState::Values::const_iterator i = state.values.begin();
637 i != state.values.end(); ++i) {
638 const uint32_t key = i->first;
639 const PersistValue& val = i->second;
640 rdff_write_triple(file,
651 root->add_property("state-file", state_filename);
655 static inline SLV2Value
656 get_value(SLV2Plugin p, SLV2Value subject, SLV2Value predicate)
658 SLV2Values vs = slv2_plugin_get_value_for_subject(p, subject, predicate);
659 return vs ? slv2_values_get_at(vs, 0) : NULL;
663 LV2Plugin::find_presets()
665 SLV2Value dc_title = slv2_value_new_uri(_world.world, NS_DC "title");
666 SLV2Value pset_hasPreset = slv2_value_new_uri(_world.world, NS_PSET "hasPreset");
668 SLV2Values presets = slv2_plugin_get_value(_plugin, pset_hasPreset);
669 for (unsigned i = 0; i < slv2_values_size(presets); ++i) {
670 SLV2Value preset = slv2_values_get_at(presets, i);
671 SLV2Value name = get_value(_plugin, preset, dc_title);
673 _presets.insert(std::make_pair(slv2_value_as_string(preset),
675 slv2_value_as_string(preset),
676 slv2_value_as_string(name))));
678 warning << string_compose(
679 _("Plugin \"%1\% preset \"%2%\" is missing a dc:title\n"),
680 unique_id(), slv2_value_as_string(preset));
683 slv2_values_free(presets);
685 slv2_value_free(pset_hasPreset);
686 slv2_value_free(dc_title);
690 LV2Plugin::load_preset(PresetRecord r)
692 Plugin::load_preset(r);
695 // New (>= 0.7.0) slv2 no longer supports SPARQL, but exposes blank nodes
696 // so querying ports is possible with the simple/fast API
697 SLV2Value lv2_port = slv2_value_new_uri(_world.world, NS_LV2 "port");
698 SLV2Value lv2_symbol = slv2_value_new_uri(_world.world, NS_LV2 "symbol");
699 SLV2Value pset_value = slv2_value_new_uri(_world.world, NS_PSET "value");
700 SLV2Value preset = slv2_value_new_uri(_world.world, r.uri.c_str());
702 SLV2Values ports = slv2_plugin_get_value_for_subject(_plugin, preset, lv2_port);
703 for (unsigned i = 0; i < slv2_values_size(ports); ++i) {
704 SLV2Value port = slv2_values_get_at(ports, i);
705 SLV2Value symbol = get_value(_plugin, port, lv2_symbol);
706 SLV2Value value = get_value(_plugin, port, pset_value);
707 if (value && slv2_value_is_float(value)) {
708 set_parameter(_port_indices[slv2_value_as_string(symbol)],
709 slv2_value_as_float(value));
712 slv2_values_free(ports);
714 slv2_value_free(preset);
715 slv2_value_free(pset_value);
716 slv2_value_free(lv2_symbol);
717 slv2_value_free(lv2_port);
719 const string query = string(
720 "PREFIX lv2p: <http://lv2plug.in/ns/dev/presets#>\n"
721 "PREFIX dc: <http://dublincore.org/documents/dcmi-namespace/>\n"
722 "SELECT ?sym ?val WHERE { <") + r.uri + "> lv2:port ?port . "
723 " ?port lv2:symbol ?sym ; lv2p:value ?val . }";
724 SLV2Results values = slv2_plugin_query_sparql(_plugin, query.c_str());
725 for (; !slv2_results_finished(values); slv2_results_next(values)) {
726 SLV2Value sym = slv2_results_get_binding_value(values, 0);
727 SLV2Value val = slv2_results_get_binding_value(values, 1);
728 if (slv2_value_is_float(val)) {
729 uint32_t index = _port_indices[slv2_value_as_string(sym)];
730 set_parameter(index, slv2_value_as_float(val));
733 slv2_results_free(values);
739 LV2Plugin::do_save_preset(string /*name*/)
745 LV2Plugin::do_remove_preset(string /*name*/)
749 LV2Plugin::has_editor() const
755 LV2Plugin::set_insert_info(const PluginInsert* insert)
757 _insert_id = insert->id();
761 LV2Plugin::set_state(const XMLNode& node, int version)
764 const XMLProperty* prop;
765 XMLNodeConstIterator iter;
770 LocaleGuard lg(X_("POSIX"));
772 if (node.name() != state_node_name()) {
773 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
777 if (version < 3000) {
778 nodes = node.children("port");
780 nodes = node.children("Port");
783 for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
787 if ((prop = child->property("symbol")) != 0) {
788 sym = prop->value().c_str();
790 warning << _("LV2: port has no symbol, ignored") << endmsg;
794 map<string, uint32_t>::iterator i = _port_indices.find(sym);
796 if (i != _port_indices.end()) {
799 warning << _("LV2: port has unknown index, ignored") << endmsg;
803 if ((prop = child->property("value")) != 0) {
804 value = prop->value().c_str();
806 warning << _("LV2: port has no value, ignored") << endmsg;
810 set_parameter(port_id, atof(value));
813 if ((prop = node.property("state-file")) != 0) {
814 std::string state_path = Glib::build_filename(_session.plugins_dir(),
817 cout << "LV2 state path " << state_path << endl;
819 // Get LV2 Persist extension data from plugin instance
820 LV2_Persist* persist = (LV2_Persist*)slv2_instance_get_extension_data(
821 _instance, "http://lv2plug.in/ns/ext/persist");
823 cout << "Loading LV2 state from " << state_path << endl;
824 RDFF file = rdff_open(state_path.c_str(), false);
826 PersistState state(_uri_map);
828 // Load file into state object
829 RDFFChunk* chunk = (RDFFChunk*)malloc(sizeof(RDFFChunk));
831 while (!rdff_read_chunk(file, &chunk)) {
832 if (rdff_chunk_is_uri(chunk)) {
833 RDFFURIChunk* body = (RDFFURIChunk*)chunk->data;
834 state.add_uri(body->id, body->uri);
835 } else if (rdff_chunk_is_triple(chunk)) {
836 RDFFTripleChunk* body = (RDFFTripleChunk*)chunk->data;
837 state.add_value(body->predicate,
841 LV2_PERSIST_IS_POD | LV2_PERSIST_IS_PORTABLE);
846 persist->restore(_instance->lv2_handle,
847 &LV2Plugin::lv2_persist_retrieve_callback,
851 warning << string_compose(
852 _("Plugin \"%1\% failed to return LV2 persist data"),
857 latency_compute_run();
859 return Plugin::set_state(node, version);
863 LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) const
865 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
867 SLV2Value def, min, max;
868 slv2_port_get_range(_plugin, port, &def, &min, &max);
870 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
871 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
872 desc.logarithmic = slv2_port_has_property(_plugin, port, _world.logarithmic);
873 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
874 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
875 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
876 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
877 desc.min_unbound = false; // TODO: LV2 extension required
878 desc.max_unbound = false; // TODO: LV2 extension required
880 if (desc.integer_step) {
882 desc.smallstep = 0.1;
883 desc.largestep = 10.0;
885 const float delta = desc.upper - desc.lower;
886 desc.step = delta / 1000.0f;
887 desc.smallstep = delta / 10000.0f;
888 desc.largestep = delta / 10.0f;
891 slv2_value_free(def);
892 slv2_value_free(min);
893 slv2_value_free(max);
899 LV2Plugin::describe_parameter(Evoral::Parameter which)
901 if (( which.type() == PluginAutomation) && ( which.id() < parameter_count()) ) {
902 SLV2Value name = slv2_port_get_name(_plugin,
903 slv2_plugin_get_port_by_index(_plugin, which.id()));
904 string ret(slv2_value_as_string(name));
905 slv2_value_free(name);
913 LV2Plugin::signal_latency() const
915 if (_latency_control_port) {
916 return (framecnt_t)floor(*_latency_control_port);
922 set<Evoral::Parameter>
923 LV2Plugin::automatable() const
925 set<Evoral::Parameter> ret;
927 for (uint32_t i = 0; i < parameter_count(); ++i) {
928 if (parameter_is_input(i) && parameter_is_control(i)) {
929 ret.insert(ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
937 LV2Plugin::activate()
939 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 activate\n", name()));
941 if (!_was_activated) {
942 slv2_instance_activate(_instance);
943 _was_activated = true;
948 LV2Plugin::deactivate()
950 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 deactivate\n", name()));
952 if (_was_activated) {
953 slv2_instance_deactivate(_instance);
954 _was_activated = false;
961 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 cleanup\n", name()));
965 slv2_instance_free(_instance);
970 LV2Plugin::connect_and_run(BufferSet& bufs,
971 ChanMapping in_map, ChanMapping out_map,
972 pframes_t nframes, framecnt_t offset)
974 DEBUG_TRACE(DEBUG::LV2, string_compose("%1 run %2 offset %3\n", name(), nframes, offset));
975 Plugin::connect_and_run(bufs, in_map, out_map, nframes, offset);
977 cycles_t then = get_cycles();
979 uint32_t audio_in_index = 0;
980 uint32_t audio_out_index = 0;
981 uint32_t midi_in_index = 0;
982 uint32_t midi_out_index = 0;
983 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
984 if (parameter_is_audio(port_index)) {
985 if (parameter_is_input(port_index)) {
986 const uint32_t buf_index = in_map.get(DataType::AUDIO, audio_in_index++);
987 slv2_instance_connect_port(_instance, port_index,
988 bufs.get_audio(buf_index).data(offset));
989 } else if (parameter_is_output(port_index)) {
990 const uint32_t buf_index = out_map.get(DataType::AUDIO, audio_out_index++);
991 //cerr << port_index << " : " << " AUDIO OUT " << buf_index << endl;
992 slv2_instance_connect_port(_instance, port_index,
993 bufs.get_audio(buf_index).data(offset));
995 } else if (parameter_is_midi(port_index)) {
996 if (parameter_is_input(port_index)) {
997 const uint32_t buf_index = in_map.get(DataType::MIDI, midi_in_index++);
998 slv2_instance_connect_port(_instance, port_index,
999 bufs.get_lv2_midi(true, buf_index).data());
1000 } else if (parameter_is_output(port_index)) {
1001 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
1002 slv2_instance_connect_port(_instance, port_index,
1003 bufs.get_lv2_midi(false, buf_index).data());
1005 } else if (!parameter_is_control(port_index)) {
1006 // Optional port (it'd better be if we've made it this far...)
1007 slv2_instance_connect_port(_instance, port_index, NULL);
1014 for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
1015 if (parameter_is_midi(port_index) && parameter_is_output(port_index)) {
1016 const uint32_t buf_index = out_map.get(DataType::MIDI, midi_out_index++);
1017 bufs.flush_lv2_midi(true, buf_index);
1021 cycles_t now = get_cycles();
1022 set_cycles((uint32_t)(now - then));
1028 LV2Plugin::parameter_is_control(uint32_t param) const
1030 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
1031 return slv2_port_is_a(_plugin, port, _world.control_class);
1035 LV2Plugin::parameter_is_audio(uint32_t param) const
1037 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
1038 return slv2_port_is_a(_plugin, port, _world.audio_class);
1042 LV2Plugin::parameter_is_midi(uint32_t param) const
1044 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
1045 return slv2_port_is_a(_plugin, port, _world.event_class);
1046 // && slv2_port_supports_event(_plugin, port, _world.midi_class);
1050 LV2Plugin::parameter_is_output(uint32_t param) const
1052 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
1053 return slv2_port_is_a(_plugin, port, _world.output_class);
1057 LV2Plugin::parameter_is_input(uint32_t param) const
1059 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
1060 return slv2_port_is_a(_plugin, port, _world.input_class);
1064 LV2Plugin::print_parameter(uint32_t param, char* buf, uint32_t len) const
1067 if (param < parameter_count()) {
1068 snprintf(buf, len, "%.3f", get_parameter(param));
1075 boost::shared_ptr<Plugin::ScalePoints>
1076 LV2Plugin::get_scale_points(uint32_t port_index) const
1078 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, port_index);
1079 SLV2ScalePoints points = slv2_port_get_scale_points(_plugin, port);
1081 boost::shared_ptr<Plugin::ScalePoints> ret;
1086 ret = boost::shared_ptr<Plugin::ScalePoints>(new ScalePoints());
1088 for (unsigned i = 0; i < slv2_scale_points_size(points); ++i) {
1089 SLV2ScalePoint p = slv2_scale_points_get_at(points, i);
1090 SLV2Value label = slv2_scale_point_get_label(p);
1091 SLV2Value value = slv2_scale_point_get_value(p);
1092 if (label && (slv2_value_is_float(value) || slv2_value_is_int(value))) {
1093 ret->insert(make_pair(slv2_value_as_string(label),
1094 slv2_value_as_float(value)));
1098 slv2_scale_points_free(points);
1103 LV2Plugin::run(pframes_t nframes)
1105 for (uint32_t i = 0; i < parameter_count(); ++i) {
1106 if (parameter_is_control(i) && parameter_is_input(i)) {
1107 _control_data[i] = _shadow_data[i];
1111 slv2_instance_run(_instance, nframes);
1115 LV2Plugin::latency_compute_run()
1117 if (!_latency_control_port) {
1121 // Run the plugin so that it can set its latency parameter
1125 uint32_t port_index = 0;
1126 uint32_t in_index = 0;
1127 uint32_t out_index = 0;
1129 const framecnt_t bufsize = 1024;
1130 float buffer[bufsize];
1132 memset(buffer, 0, sizeof(float) * bufsize);
1134 // FIXME: Ensure plugins can handle in-place processing
1138 while (port_index < parameter_count()) {
1139 if (parameter_is_audio(port_index)) {
1140 if (parameter_is_input(port_index)) {
1141 slv2_instance_connect_port(_instance, port_index, buffer);
1143 } else if (parameter_is_output(port_index)) {
1144 slv2_instance_connect_port(_instance, port_index, buffer);
1155 LV2World::LV2World()
1156 : world(slv2_world_new())
1158 slv2_world_load_all(world);
1159 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
1160 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
1161 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
1162 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
1163 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
1164 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
1165 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
1166 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
1167 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
1168 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
1169 gtk_gui = slv2_value_new_uri(world, NS_UI "GtkUI");
1170 external_gui = slv2_value_new_uri(world, NS_UI "external");
1171 logarithmic = slv2_value_new_uri(world, "http://lv2plug.in/ns/dev/extportinfo#logarithmic");
1174 LV2World::~LV2World()
1176 slv2_value_free(input_class);
1177 slv2_value_free(output_class);
1178 slv2_value_free(control_class);
1179 slv2_value_free(audio_class);
1180 slv2_value_free(event_class);
1181 slv2_value_free(midi_class);
1182 slv2_value_free(in_place_broken);
1185 LV2PluginInfo::LV2PluginInfo (void* slv2_plugin)
1186 : _slv2_plugin(slv2_plugin)
1191 LV2PluginInfo::~LV2PluginInfo()
1195 LV2PluginInfo::load(Session& session)
1200 plugin.reset(new LV2Plugin(session.engine(), session,
1201 (SLV2Plugin)_slv2_plugin,
1202 session.frame_rate()));
1204 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
1206 } catch (failed_constructor& err) {
1207 return PluginPtr((Plugin*)0);
1214 LV2PluginInfo::discover()
1216 PluginInfoList* plugs = new PluginInfoList;
1217 SLV2Plugins plugins = slv2_world_get_all_plugins(_world.world);
1219 cerr << "LV2: Discovering " << slv2_plugins_size(plugins) << " plugins" << endl;
1221 for (unsigned i = 0; i < slv2_plugins_size(plugins); ++i) {
1222 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
1223 LV2PluginInfoPtr info(new LV2PluginInfo(p));
1225 SLV2Value name = slv2_plugin_get_name(p);
1228 cerr << "LV2: invalid plugin\n";
1234 info->name = string(slv2_value_as_string(name));
1235 slv2_value_free(name);
1237 SLV2PluginClass pclass = slv2_plugin_get_class(p);
1238 SLV2Value label = slv2_plugin_class_get_label(pclass);
1239 info->category = slv2_value_as_string(label);
1241 SLV2Value author_name = slv2_plugin_get_author_name(p);
1242 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
1243 slv2_value_free(author_name);
1245 info->path = "/NOPATH"; // Meaningless for LV2
1247 info->n_inputs.set_audio(
1248 slv2_plugin_get_num_ports_of_class(
1249 p, _world.input_class, _world.audio_class, NULL));
1250 info->n_inputs.set_midi(
1251 slv2_plugin_get_num_ports_of_class(
1252 p, _world.input_class, _world.event_class, NULL));
1254 info->n_outputs.set_audio(
1255 slv2_plugin_get_num_ports_of_class(
1256 p, _world.output_class, _world.audio_class, NULL));
1257 info->n_outputs.set_midi(
1258 slv2_plugin_get_num_ports_of_class(
1259 p, _world.output_class, _world.event_class, NULL));
1261 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
1262 info->index = 0; // Meaningless for LV2
1264 plugs->push_back(info);
1267 cerr << "Done LV2 discovery" << endl;