2 Copyright (C) 2008 Paul Davis
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.
28 #include <pbd/compose.h>
29 #include <pbd/error.h>
30 #include <pbd/pathscanner.h>
31 #include <pbd/xml++.h>
33 #include <ardour/ardour.h>
34 #include <ardour/session.h>
35 #include <ardour/audioengine.h>
36 #include <ardour/lv2_plugin.h>
38 #include <pbd/stl_delete.h>
44 using namespace ARDOUR;
47 LV2Plugin::LV2Plugin (AudioEngine& e, Session& session, LV2World& world, SLV2Plugin plugin, nframes_t rate)
52 init (world, plugin, rate);
55 LV2Plugin::LV2Plugin (const LV2Plugin &other)
57 , _world(other._world)
60 init (other._world, other._plugin, other._sample_rate);
62 for (uint32_t i = 0; i < parameter_count(); ++i) {
63 _control_data[i] = other._shadow_data[i];
64 _shadow_data[i] = other._shadow_data[i];
69 LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
76 _latency_control_port = 0;
77 _was_activated = false;
79 _instance = slv2_plugin_instantiate(plugin, rate, _features);
80 _name = slv2_plugin_get_name(plugin);
82 _author = slv2_plugin_get_author_name(plugin);
85 error << _("LV2: Failed to instantiate plugin ") << slv2_plugin_get_uri(plugin) << endl;
86 throw failed_constructor();
89 if (slv2_plugin_has_feature(plugin, world.in_place_broken)) {
90 error << string_compose(_("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
91 slv2_value_as_string(_name));
92 slv2_value_free(_name);
93 slv2_value_free(_author);
94 throw failed_constructor();
97 _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access";
98 _instance_access_feature.data = (void*)_instance->lv2_handle;
100 _data_access_extension_data.extension_data = _instance->lv2_descriptor->extension_data;
101 _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
102 _data_access_feature.data = &_data_access_extension_data;
104 _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 3);
105 _features[0] = &_instance_access_feature;
106 _features[1] = &_data_access_feature;
111 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
113 _control_data = new float[num_ports];
114 _shadow_data = new float[num_ports];
115 _defaults = new float[num_ports];
117 const bool latent = slv2_plugin_has_latency(plugin);
118 uint32_t latency_port = (latent ? slv2_plugin_get_latency_port_index(plugin) : 0);
120 for (uint32_t i = 0; i < num_ports; ++i) {
121 if (parameter_is_control(i)) {
122 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
124 slv2_port_get_range(plugin, port, &def, NULL, NULL);
125 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
126 slv2_value_free(def);
128 slv2_instance_connect_port (_instance, i, &_control_data[i]);
130 if (latent && i == latency_port) {
131 _latency_control_port = &_control_data[i];
132 *_latency_control_port = 0;
135 if (parameter_is_input(i)) {
136 _shadow_data[i] = default_value (i);
143 SLV2UIs uis = slv2_plugin_get_uis(_plugin);
144 if (slv2_uis_size(uis) > 0) {
145 for (unsigned i=0; i < slv2_uis_size(uis); ++i) {
146 SLV2UI ui = slv2_uis_get_at(uis, i);
147 if (slv2_ui_is_a(ui, _world.gtk_gui)) {
154 latency_compute_run ();
157 LV2Plugin::~LV2Plugin ()
162 GoingAway (); /* EMIT SIGNAL */
164 slv2_instance_free(_instance);
165 slv2_value_free(_name);
166 slv2_value_free(_author);
168 delete [] _control_data;
169 delete [] _shadow_data;
173 LV2Plugin::unique_id() const
175 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
180 LV2Plugin::default_value (uint32_t port)
182 return _defaults[port];
186 LV2Plugin::port_symbol (uint32_t index)
188 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, index);
190 error << name() << ": Invalid port index " << index << endmsg;
193 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
194 return slv2_value_as_string(sym);
199 LV2Plugin::set_parameter (uint32_t which, float val)
201 if (which < slv2_plugin_get_num_ports(_plugin)) {
202 _shadow_data[which] = val;
204 ParameterChanged (which, val); /* EMIT SIGNAL */
206 if (which < parameter_count() && controls[which]) {
207 controls[which]->Changed ();
212 warning << string_compose (_("Illegal parameter number used with plugin \"%1\"."
213 "This is a bug in either Ardour or the LV2 plugin (%2)"),
214 name(), unique_id()) << endmsg;
219 LV2Plugin::get_parameter (uint32_t which) const
221 if (parameter_is_input(which)) {
222 return (float) _shadow_data[which];
224 return (float) _control_data[which];
230 LV2Plugin::nth_parameter (uint32_t n, bool& ok) const
236 for (c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
237 if (parameter_is_control (x)) {
249 LV2Plugin::get_state()
251 XMLNode *root = new XMLNode(state_node_name());
254 LocaleGuard lg (X_("POSIX"));
256 for (uint32_t i = 0; i < parameter_count(); ++i){
258 if (parameter_is_input(i) && parameter_is_control(i)) {
259 child = new XMLNode("port");
260 snprintf(buf, sizeof(buf), "%u", i);
261 child->add_property("number", string(buf));
262 child->add_property("symbol", port_symbol(i));
263 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
264 child->add_property("value", string(buf));
265 root->add_child_nocopy (*child);
267 /*if (i < controls.size() && controls[i]) {
268 root->add_child_nocopy (controls[i]->get_state());
277 LV2Plugin::save_preset (string name)
279 return Plugin::save_preset (name, "lv2");
283 LV2Plugin::has_editor() const
285 return (_ui != NULL);
289 LV2Plugin::set_state(const XMLNode& node)
293 XMLNodeConstIterator iter;
298 LocaleGuard lg (X_("POSIX"));
300 if (node.name() != state_node_name()) {
301 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
305 nodes = node.children ("port");
307 for(iter = nodes.begin(); iter != nodes.end(); ++iter){
311 if ((prop = child->property("number")) != 0) {
312 port = prop->value().c_str();
314 warning << _("LV2: no lv2 port number") << endmsg;
318 if ((prop = child->property("value")) != 0) {
319 data = prop->value().c_str();
321 warning << _("LV2: no lv2 port data") << endmsg;
325 sscanf (port, "%" PRIu32, &port_id);
326 set_parameter (port_id, atof(data));
329 latency_compute_run ();
335 LV2Plugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
337 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
339 SLV2Value def, min, max;
340 slv2_port_get_range(_plugin, port, &def, &min, &max);
342 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
343 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
344 desc.logarithmic = false; // TODO (LV2 extension)
345 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
346 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
347 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
348 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
349 desc.min_unbound = false; // TODO (LV2 extension)
350 desc.max_unbound = false; // TODO (LV2 extension)
352 if (desc.integer_step) {
354 desc.smallstep = 0.1;
355 desc.largestep = 10.0;
357 const float delta = desc.upper - desc.lower;
358 desc.step = delta / 1000.0f;
359 desc.smallstep = delta / 10000.0f;
360 desc.largestep = delta/10.0f;
363 slv2_value_free(def);
364 slv2_value_free(min);
365 slv2_value_free(max);
372 LV2Plugin::describe_parameter (Evoral::Parameter which)
374 if (which.type() == PluginAutomation && which.id() < parameter_count()) {
375 SLV2Value name = slv2_port_get_name(_plugin,
376 slv2_plugin_get_port_by_index(_plugin, which));
377 string ret(slv2_value_as_string(name));
378 slv2_value_free(name);
386 LV2Plugin::signal_latency () const
388 if (_latency_control_port) {
389 return (nframes_t) floor (*_latency_control_port);
395 set<Evoral::Parameter>
396 LV2Plugin::automatable () const
398 set<Evoral::Parameter> ret;
400 for (uint32_t i = 0; i < parameter_count(); ++i){
401 if (parameter_is_input(i) && parameter_is_control(i)) {
402 ret.insert (ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
410 LV2Plugin::connect_and_run (BufferSet& bufs, uint32_t& in_index, uint32_t& out_index, nframes_t nframes, nframes_t offset)
417 then = get_cycles ();
419 const uint32_t nbufs = bufs.count().n_audio();
421 while (port_index < parameter_count()) {
422 if (parameter_is_audio(port_index)) {
423 if (parameter_is_input(port_index)) {
424 const size_t index = min(in_index, nbufs - 1);
425 slv2_instance_connect_port(_instance, port_index,
426 bufs.get_audio(index).data(nframes, offset));
428 } else if (parameter_is_output(port_index)) {
429 const size_t index = min(out_index,nbufs - 1);
430 slv2_instance_connect_port(_instance, port_index,
431 bufs.get_audio(index).data(nframes, offset));
434 } else if (parameter_is_midi(port_index)) {
435 // FIXME: Switch MIDI buffer format to LV2 event buffer
436 if (parameter_is_input(port_index)) {
437 //const size_t index = min(in_index, nbufs - 1);
438 //slv2_instance_connect_port(_instance, port_index,
439 // bufs.get_midi(index).data(nframes, offset));
440 // FIXME: hope it's connection optional...
441 slv2_instance_connect_port(_instance, port_index, NULL);
443 } else if (parameter_is_output(port_index)) {
444 //const size_t index = min(out_index,nbufs - 1);
445 //slv2_instance_connect_port(_instance, port_index,
446 // bufs.get_midi(index).data(nframes, offset));
447 // FIXME: hope it's connection optional...
448 slv2_instance_connect_port(_instance, port_index, NULL);
457 set_cycles ((uint32_t) (now - then));
463 LV2Plugin::parameter_is_control (uint32_t param) const
465 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
466 return slv2_port_is_a(_plugin, port, _world.control_class);
470 LV2Plugin::parameter_is_audio (uint32_t param) const
472 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
473 return slv2_port_is_a(_plugin, port, _world.audio_class);
477 LV2Plugin::parameter_is_midi (uint32_t param) const
479 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
480 return slv2_port_is_a(_plugin, port, _world.event_class)
481 && slv2_port_supports_event(_plugin, port, _world.midi_class);
485 LV2Plugin::parameter_is_output (uint32_t param) const
487 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
488 return slv2_port_is_a(_plugin, port, _world.output_class);
492 LV2Plugin::parameter_is_input (uint32_t param) const
494 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
495 return slv2_port_is_a(_plugin, port, _world.input_class);
499 LV2Plugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
502 if (param < parameter_count()) {
503 snprintf (buf, len, "%.3f", get_parameter (param));
511 LV2Plugin::run (nframes_t nframes)
513 for (uint32_t i = 0; i < parameter_count(); ++i) {
514 if (parameter_is_control(i) && parameter_is_input(i)) {
515 _control_data[i] = _shadow_data[i];
519 slv2_instance_run(_instance, nframes);
523 LV2Plugin::latency_compute_run ()
525 if (!_latency_control_port) {
529 /* we need to run the plugin so that it can set its latency
535 uint32_t port_index = 0;
536 uint32_t in_index = 0;
537 uint32_t out_index = 0;
538 const nframes_t bufsize = 1024;
539 float buffer[bufsize];
541 memset(buffer,0,sizeof(float)*bufsize);
543 /* Note that we've already required that plugins
544 be able to handle in-place processing.
549 while (port_index < parameter_count()) {
550 if (parameter_is_audio (port_index)) {
551 if (parameter_is_input (port_index)) {
552 slv2_instance_connect_port (_instance, port_index, buffer);
554 } else if (parameter_is_output (port_index)) {
555 slv2_instance_connect_port (_instance, port_index, buffer);
567 : world(slv2_world_new())
569 slv2_world_load_all(world);
570 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
571 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
572 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
573 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
574 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
575 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
576 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
577 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
578 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
579 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
580 gtk_gui = slv2_value_new_uri(world, "http://lv2plug.in/ns/extensions/ui#GtkUI");
583 LV2World::~LV2World()
585 slv2_value_free(input_class);
586 slv2_value_free(output_class);
587 slv2_value_free(control_class);
588 slv2_value_free(audio_class);
589 slv2_value_free(event_class);
590 slv2_value_free(midi_class);
591 slv2_value_free(in_place_broken);
594 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
595 : _lv2_world(lv2_world)
596 , _slv2_plugin(slv2_plugin)
600 LV2PluginInfo::~LV2PluginInfo()
605 LV2PluginInfo::load (Session& session)
610 plugin.reset (new LV2Plugin (session.engine(), session,
611 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin, session.frame_rate()));
613 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
617 catch (failed_constructor &err) {
618 return PluginPtr ((Plugin*) 0);
625 LV2PluginInfo::discover (void* lv2_world)
627 PluginInfoList plugs;
629 LV2World* world = (LV2World*)lv2_world;
630 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
632 for (unsigned i=0; i < slv2_plugins_size(plugins); ++i) {
633 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
634 LV2PluginInfoPtr info (new LV2PluginInfo(lv2_world, p));
636 SLV2Value name = slv2_plugin_get_name(p);
637 info->name = string(slv2_value_as_string(name));
638 slv2_value_free(name);
640 SLV2PluginClass pclass = slv2_plugin_get_class(p);
641 SLV2Value label = slv2_plugin_class_get_label(pclass);
642 info->category = slv2_value_as_string(label);
644 SLV2Value author_name = slv2_plugin_get_author_name(p);
645 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
646 slv2_value_free(author_name);
648 info->path = "/NOPATH"; // Meaningless for LV2
650 info->n_inputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
651 world->input_class, world->audio_class, NULL));
652 info->n_inputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
653 world->input_class, world->event_class, NULL));
655 info->n_outputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
656 world->output_class, world->audio_class, NULL));
657 info->n_outputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
658 world->output_class, world->event_class, NULL));
660 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
661 info->index = 0; // Meaningless for LV2
663 plugs.push_back (info);