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);
169 delete [] _control_data;
173 delete [] _shadow_data;
178 LV2Plugin::unique_id() const
180 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
185 LV2Plugin::default_value (uint32_t port)
187 return _defaults[port];
191 LV2Plugin::port_symbol (uint32_t index)
193 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, index);
195 error << name() << ": Invalid port index " << index << endmsg;
198 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
199 return slv2_value_as_string(sym);
204 LV2Plugin::set_parameter (uint32_t which, float val)
206 if (which < slv2_plugin_get_num_ports(_plugin)) {
207 _shadow_data[which] = val;
209 ParameterChanged (which, val); /* EMIT SIGNAL */
211 if (which < parameter_count() && controls[which]) {
212 controls[which]->Changed ();
217 warning << string_compose (_("Illegal parameter number used with plugin \"%1\"."
218 "This is a bug in either Ardour or the LV2 plugin (%2)"),
219 name(), unique_id()) << endmsg;
224 LV2Plugin::get_parameter (uint32_t which) const
226 if (parameter_is_input(which)) {
227 return (float) _shadow_data[which];
229 return (float) _control_data[which];
235 LV2Plugin::nth_parameter (uint32_t n, bool& ok) const
241 for (c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
242 if (parameter_is_control (x)) {
254 LV2Plugin::get_state()
256 XMLNode *root = new XMLNode(state_node_name());
259 LocaleGuard lg (X_("POSIX"));
261 for (uint32_t i = 0; i < parameter_count(); ++i){
263 if (parameter_is_input(i) && parameter_is_control(i)) {
264 child = new XMLNode("port");
265 snprintf(buf, sizeof(buf), "%u", i);
266 child->add_property("number", string(buf));
267 child->add_property("symbol", port_symbol(i));
268 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
269 child->add_property("value", string(buf));
270 root->add_child_nocopy (*child);
272 /*if (i < controls.size() && controls[i]) {
273 root->add_child_nocopy (controls[i]->get_state());
282 LV2Plugin::save_preset (string name)
284 return Plugin::save_preset (name, "lv2");
288 LV2Plugin::has_editor() const
290 return (_ui != NULL);
294 LV2Plugin::set_state(const XMLNode& node)
298 XMLNodeConstIterator iter;
303 LocaleGuard lg (X_("POSIX"));
305 if (node.name() != state_node_name()) {
306 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
310 nodes = node.children ("port");
312 for(iter = nodes.begin(); iter != nodes.end(); ++iter){
316 if ((prop = child->property("number")) != 0) {
317 port = prop->value().c_str();
319 warning << _("LV2: no lv2 port number") << endmsg;
323 if ((prop = child->property("value")) != 0) {
324 data = prop->value().c_str();
326 warning << _("LV2: no lv2 port data") << endmsg;
330 sscanf (port, "%" PRIu32, &port_id);
331 set_parameter (port_id, atof(data));
334 latency_compute_run ();
340 LV2Plugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
342 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
344 SLV2Value def, min, max;
345 slv2_port_get_range(_plugin, port, &def, &min, &max);
347 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
348 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
349 desc.logarithmic = false; // TODO (LV2 extension)
350 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
351 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
352 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
353 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
354 desc.min_unbound = false; // TODO (LV2 extension)
355 desc.max_unbound = false; // TODO (LV2 extension)
357 if (desc.integer_step) {
359 desc.smallstep = 0.1;
360 desc.largestep = 10.0;
362 const float delta = desc.upper - desc.lower;
363 desc.step = delta / 1000.0f;
364 desc.smallstep = delta / 10000.0f;
365 desc.largestep = delta/10.0f;
368 slv2_value_free(def);
369 slv2_value_free(min);
370 slv2_value_free(max);
377 LV2Plugin::describe_parameter (Evoral::Parameter which)
379 if (which.type() == PluginAutomation && which.id() < parameter_count()) {
380 SLV2Value name = slv2_port_get_name(_plugin,
381 slv2_plugin_get_port_by_index(_plugin, which));
382 string ret(slv2_value_as_string(name));
383 slv2_value_free(name);
391 LV2Plugin::signal_latency () const
393 if (_latency_control_port) {
394 return (nframes_t) floor (*_latency_control_port);
400 set<Evoral::Parameter>
401 LV2Plugin::automatable () const
403 set<Evoral::Parameter> ret;
405 for (uint32_t i = 0; i < parameter_count(); ++i){
406 if (parameter_is_input(i) && parameter_is_control(i)) {
407 ret.insert (ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
415 LV2Plugin::connect_and_run (BufferSet& bufs, uint32_t& in_index, uint32_t& out_index, nframes_t nframes, nframes_t offset)
422 then = get_cycles ();
424 const uint32_t nbufs = bufs.count().n_audio();
426 while (port_index < parameter_count()) {
427 if (parameter_is_audio(port_index)) {
428 if (parameter_is_input(port_index)) {
429 const size_t index = min(in_index, nbufs - 1);
430 slv2_instance_connect_port(_instance, port_index,
431 bufs.get_audio(index).data(nframes, offset));
433 } else if (parameter_is_output(port_index)) {
434 const size_t index = min(out_index,nbufs - 1);
435 slv2_instance_connect_port(_instance, port_index,
436 bufs.get_audio(index).data(nframes, offset));
439 } else if (parameter_is_midi(port_index)) {
440 // FIXME: Switch MIDI buffer format to LV2 event buffer
441 if (parameter_is_input(port_index)) {
442 //const size_t index = min(in_index, nbufs - 1);
443 //slv2_instance_connect_port(_instance, port_index,
444 // bufs.get_midi(index).data(nframes, offset));
445 // FIXME: hope it's connection optional...
446 slv2_instance_connect_port(_instance, port_index, NULL);
448 } else if (parameter_is_output(port_index)) {
449 //const size_t index = min(out_index,nbufs - 1);
450 //slv2_instance_connect_port(_instance, port_index,
451 // bufs.get_midi(index).data(nframes, offset));
452 // FIXME: hope it's connection optional...
453 slv2_instance_connect_port(_instance, port_index, NULL);
462 set_cycles ((uint32_t) (now - then));
468 LV2Plugin::parameter_is_control (uint32_t param) const
470 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
471 return slv2_port_is_a(_plugin, port, _world.control_class);
475 LV2Plugin::parameter_is_audio (uint32_t param) const
477 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
478 return slv2_port_is_a(_plugin, port, _world.audio_class);
482 LV2Plugin::parameter_is_midi (uint32_t param) const
484 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
485 return slv2_port_is_a(_plugin, port, _world.event_class)
486 && slv2_port_supports_event(_plugin, port, _world.midi_class);
490 LV2Plugin::parameter_is_output (uint32_t param) const
492 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
493 return slv2_port_is_a(_plugin, port, _world.output_class);
497 LV2Plugin::parameter_is_input (uint32_t param) const
499 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
500 return slv2_port_is_a(_plugin, port, _world.input_class);
504 LV2Plugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
507 if (param < parameter_count()) {
508 snprintf (buf, len, "%.3f", get_parameter (param));
516 LV2Plugin::run (nframes_t nframes)
518 for (uint32_t i = 0; i < parameter_count(); ++i) {
519 if (parameter_is_control(i) && parameter_is_input(i)) {
520 _control_data[i] = _shadow_data[i];
524 slv2_instance_run(_instance, nframes);
528 LV2Plugin::latency_compute_run ()
530 if (!_latency_control_port) {
534 /* we need to run the plugin so that it can set its latency
540 uint32_t port_index = 0;
541 uint32_t in_index = 0;
542 uint32_t out_index = 0;
543 const nframes_t bufsize = 1024;
544 float buffer[bufsize];
546 memset(buffer,0,sizeof(float)*bufsize);
548 /* Note that we've already required that plugins
549 be able to handle in-place processing.
554 while (port_index < parameter_count()) {
555 if (parameter_is_audio (port_index)) {
556 if (parameter_is_input (port_index)) {
557 slv2_instance_connect_port (_instance, port_index, buffer);
559 } else if (parameter_is_output (port_index)) {
560 slv2_instance_connect_port (_instance, port_index, buffer);
572 : world(slv2_world_new())
574 slv2_world_load_all(world);
575 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
576 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
577 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
578 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
579 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
580 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
581 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
582 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
583 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
584 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
585 gtk_gui = slv2_value_new_uri(world, "http://lv2plug.in/ns/extensions/ui#GtkUI");
588 LV2World::~LV2World()
590 slv2_value_free(input_class);
591 slv2_value_free(output_class);
592 slv2_value_free(control_class);
593 slv2_value_free(audio_class);
594 slv2_value_free(event_class);
595 slv2_value_free(midi_class);
596 slv2_value_free(in_place_broken);
599 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
600 : _lv2_world(lv2_world)
601 , _slv2_plugin(slv2_plugin)
605 LV2PluginInfo::~LV2PluginInfo()
610 LV2PluginInfo::load (Session& session)
615 plugin.reset (new LV2Plugin (session.engine(), session,
616 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin, session.frame_rate()));
618 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
622 catch (failed_constructor &err) {
623 return PluginPtr ((Plugin*) 0);
630 LV2PluginInfo::discover (void* lv2_world)
632 PluginInfoList plugs;
634 LV2World* world = (LV2World*)lv2_world;
635 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
637 for (unsigned i=0; i < slv2_plugins_size(plugins); ++i) {
638 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
639 LV2PluginInfoPtr info (new LV2PluginInfo(lv2_world, p));
641 SLV2Value name = slv2_plugin_get_name(p);
642 info->name = string(slv2_value_as_string(name));
643 slv2_value_free(name);
645 SLV2PluginClass pclass = slv2_plugin_get_class(p);
646 SLV2Value label = slv2_plugin_class_get_label(pclass);
647 info->category = slv2_value_as_string(label);
649 SLV2Value author_name = slv2_plugin_get_author_name(p);
650 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
651 slv2_value_free(author_name);
653 info->path = "/NOPATH"; // Meaningless for LV2
655 info->n_inputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
656 world->input_class, world->audio_class, NULL));
657 info->n_inputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
658 world->input_class, world->event_class, NULL));
660 info->n_outputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
661 world->output_class, world->audio_class, NULL));
662 info->n_outputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
663 world->output_class, world->event_class, NULL));
665 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
666 info->index = 0; // Meaningless for LV2
668 plugs.push_back (info);