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/audio_buffer.h>
37 #include <ardour/lv2_plugin.h>
39 #include <pbd/stl_delete.h>
45 using namespace ARDOUR;
48 LV2Plugin::LV2Plugin (AudioEngine& e, Session& session, LV2World& world, SLV2Plugin plugin, nframes_t rate)
53 init (world, plugin, rate);
56 LV2Plugin::LV2Plugin (const LV2Plugin &other)
58 , _world(other._world)
61 init (other._world, other._plugin, other._sample_rate);
63 for (uint32_t i = 0; i < parameter_count(); ++i) {
64 _control_data[i] = other._shadow_data[i];
65 _shadow_data[i] = other._shadow_data[i];
70 LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
77 _latency_control_port = 0;
78 _was_activated = false;
80 _instance = slv2_plugin_instantiate(plugin, rate, _features);
81 _name = slv2_plugin_get_name(plugin);
83 _author = slv2_plugin_get_author_name(plugin);
86 error << _("LV2: Failed to instantiate plugin ") << slv2_plugin_get_uri(plugin) << endl;
87 throw failed_constructor();
90 if (slv2_plugin_has_feature(plugin, world.in_place_broken)) {
91 error << string_compose(_("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
92 slv2_value_as_string(_name));
93 slv2_value_free(_name);
94 slv2_value_free(_author);
95 throw failed_constructor();
98 _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access";
99 _instance_access_feature.data = (void*)_instance->lv2_handle;
101 _data_access_extension_data.extension_data = _instance->lv2_descriptor->extension_data;
102 _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access";
103 _data_access_feature.data = &_data_access_extension_data;
105 _features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * 3);
106 _features[0] = &_instance_access_feature;
107 _features[1] = &_data_access_feature;
112 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
114 _control_data = new float[num_ports];
115 _shadow_data = new float[num_ports];
116 _defaults = new float[num_ports];
118 const bool latent = slv2_plugin_has_latency(plugin);
119 uint32_t latency_port = (latent ? slv2_plugin_get_latency_port_index(plugin) : 0);
121 for (uint32_t i = 0; i < num_ports; ++i) {
122 if (parameter_is_control(i)) {
123 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
125 slv2_port_get_range(plugin, port, &def, NULL, NULL);
126 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
127 slv2_value_free(def);
129 slv2_instance_connect_port (_instance, i, &_control_data[i]);
131 if (latent && i == latency_port) {
132 _latency_control_port = &_control_data[i];
133 *_latency_control_port = 0;
136 if (parameter_is_input(i)) {
137 _shadow_data[i] = default_value (i);
144 SLV2UIs uis = slv2_plugin_get_uis(_plugin);
145 if (slv2_uis_size(uis) > 0) {
146 for (unsigned i=0; i < slv2_uis_size(uis); ++i) {
147 SLV2UI ui = slv2_uis_get_at(uis, i);
148 if (slv2_ui_is_a(ui, _world.gtk_gui)) {
155 latency_compute_run ();
158 LV2Plugin::~LV2Plugin ()
163 GoingAway (); /* EMIT SIGNAL */
165 slv2_instance_free(_instance);
166 slv2_value_free(_name);
167 slv2_value_free(_author);
169 delete [] _control_data;
170 delete [] _shadow_data;
174 LV2Plugin::unique_id() const
176 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
181 LV2Plugin::default_value (uint32_t port)
183 return _defaults[port];
187 LV2Plugin::port_symbol (uint32_t index)
189 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, index);
191 error << name() << ": Invalid port index " << index << endmsg;
194 SLV2Value sym = slv2_port_get_symbol(_plugin, port);
195 return slv2_value_as_string(sym);
200 LV2Plugin::set_parameter (uint32_t which, float val)
202 if (which < slv2_plugin_get_num_ports(_plugin)) {
203 _shadow_data[which] = val;
205 ParameterChanged (which, val); /* EMIT SIGNAL */
207 if (which < parameter_count() && controls[which]) {
208 controls[which]->Changed ();
213 warning << string_compose (_("Illegal parameter number used with plugin \"%1\"."
214 "This is a bug in either Ardour or the LV2 plugin (%2)"),
215 name(), unique_id()) << endmsg;
220 LV2Plugin::get_parameter (uint32_t which) const
222 if (parameter_is_input(which)) {
223 return (float) _shadow_data[which];
225 return (float) _control_data[which];
231 LV2Plugin::nth_parameter (uint32_t n, bool& ok) const
237 for (c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
238 if (parameter_is_control (x)) {
250 LV2Plugin::get_state()
252 XMLNode *root = new XMLNode(state_node_name());
255 LocaleGuard lg (X_("POSIX"));
257 for (uint32_t i = 0; i < parameter_count(); ++i){
259 if (parameter_is_input(i) && parameter_is_control(i)) {
260 child = new XMLNode("port");
261 snprintf(buf, sizeof(buf), "%u", i);
262 child->add_property("number", string(buf));
263 child->add_property("symbol", port_symbol(i));
264 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
265 child->add_property("value", string(buf));
266 root->add_child_nocopy (*child);
268 /*if (i < controls.size() && controls[i]) {
269 root->add_child_nocopy (controls[i]->get_state());
278 LV2Plugin::save_preset (string name)
280 return Plugin::save_preset (name, "lv2");
284 LV2Plugin::has_editor() const
286 return (_ui != NULL);
290 LV2Plugin::set_state(const XMLNode& node)
294 XMLNodeConstIterator iter;
299 LocaleGuard lg (X_("POSIX"));
301 if (node.name() != state_node_name()) {
302 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
306 nodes = node.children ("port");
308 for(iter = nodes.begin(); iter != nodes.end(); ++iter){
312 if ((prop = child->property("number")) != 0) {
313 port = prop->value().c_str();
315 warning << _("LV2: no lv2 port number") << endmsg;
319 if ((prop = child->property("value")) != 0) {
320 data = prop->value().c_str();
322 warning << _("LV2: no lv2 port data") << endmsg;
326 sscanf (port, "%" PRIu32, &port_id);
327 set_parameter (port_id, atof(data));
330 latency_compute_run ();
336 LV2Plugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
338 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
340 SLV2Value def, min, max;
341 slv2_port_get_range(_plugin, port, &def, &min, &max);
343 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
344 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
345 desc.logarithmic = false; // TODO (LV2 extension)
346 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
347 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
348 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
349 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
350 desc.min_unbound = false; // TODO (LV2 extension)
351 desc.max_unbound = false; // TODO (LV2 extension)
353 if (desc.integer_step) {
355 desc.smallstep = 0.1;
356 desc.largestep = 10.0;
358 const float delta = desc.upper - desc.lower;
359 desc.step = delta / 1000.0f;
360 desc.smallstep = delta / 10000.0f;
361 desc.largestep = delta/10.0f;
364 slv2_value_free(def);
365 slv2_value_free(min);
366 slv2_value_free(max);
373 LV2Plugin::describe_parameter (Evoral::Parameter which)
375 if (which.type() == PluginAutomation && which.id() < parameter_count()) {
376 SLV2Value name = slv2_port_get_name(_plugin,
377 slv2_plugin_get_port_by_index(_plugin, which));
378 string ret(slv2_value_as_string(name));
379 slv2_value_free(name);
387 LV2Plugin::signal_latency () const
389 if (_latency_control_port) {
390 return (nframes_t) floor (*_latency_control_port);
396 set<Evoral::Parameter>
397 LV2Plugin::automatable () const
399 set<Evoral::Parameter> ret;
401 for (uint32_t i = 0; i < parameter_count(); ++i){
402 if (parameter_is_input(i) && parameter_is_control(i)) {
403 ret.insert (ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
411 LV2Plugin::connect_and_run (BufferSet& bufs, uint32_t& in_index, uint32_t& out_index, nframes_t nframes, nframes_t offset)
418 then = get_cycles ();
420 const uint32_t nbufs = bufs.count().n_audio();
422 while (port_index < parameter_count()) {
423 if (parameter_is_audio(port_index)) {
424 if (parameter_is_input(port_index)) {
425 const size_t index = min(in_index, nbufs - 1);
426 slv2_instance_connect_port(_instance, port_index,
427 bufs.get_audio(index).data(nframes, offset));
429 } else if (parameter_is_output(port_index)) {
430 const size_t index = min(out_index,nbufs - 1);
431 slv2_instance_connect_port(_instance, port_index,
432 bufs.get_audio(index).data(nframes, offset));
435 } else if (parameter_is_midi(port_index)) {
436 // FIXME: Switch MIDI buffer format to LV2 event buffer
437 if (parameter_is_input(port_index)) {
438 //const size_t index = min(in_index, nbufs - 1);
439 //slv2_instance_connect_port(_instance, port_index,
440 // bufs.get_midi(index).data(nframes, offset));
441 // FIXME: hope it's connection optional...
442 slv2_instance_connect_port(_instance, port_index, NULL);
444 } else if (parameter_is_output(port_index)) {
445 //const size_t index = min(out_index,nbufs - 1);
446 //slv2_instance_connect_port(_instance, port_index,
447 // bufs.get_midi(index).data(nframes, offset));
448 // FIXME: hope it's connection optional...
449 slv2_instance_connect_port(_instance, port_index, NULL);
458 set_cycles ((uint32_t) (now - then));
464 LV2Plugin::parameter_is_control (uint32_t param) const
466 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
467 return slv2_port_is_a(_plugin, port, _world.control_class);
471 LV2Plugin::parameter_is_audio (uint32_t param) const
473 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
474 return slv2_port_is_a(_plugin, port, _world.audio_class);
478 LV2Plugin::parameter_is_midi (uint32_t param) const
480 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
481 return slv2_port_is_a(_plugin, port, _world.event_class)
482 && slv2_port_supports_event(_plugin, port, _world.midi_class);
486 LV2Plugin::parameter_is_output (uint32_t param) const
488 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
489 return slv2_port_is_a(_plugin, port, _world.output_class);
493 LV2Plugin::parameter_is_input (uint32_t param) const
495 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
496 return slv2_port_is_a(_plugin, port, _world.input_class);
500 LV2Plugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
503 if (param < parameter_count()) {
504 snprintf (buf, len, "%.3f", get_parameter (param));
512 LV2Plugin::run (nframes_t nframes)
514 for (uint32_t i = 0; i < parameter_count(); ++i) {
515 if (parameter_is_control(i) && parameter_is_input(i)) {
516 _control_data[i] = _shadow_data[i];
520 slv2_instance_run(_instance, nframes);
524 LV2Plugin::latency_compute_run ()
526 if (!_latency_control_port) {
530 /* we need to run the plugin so that it can set its latency
536 uint32_t port_index = 0;
537 uint32_t in_index = 0;
538 uint32_t out_index = 0;
539 const nframes_t bufsize = 1024;
540 float buffer[bufsize];
542 memset(buffer,0,sizeof(float)*bufsize);
544 /* Note that we've already required that plugins
545 be able to handle in-place processing.
550 while (port_index < parameter_count()) {
551 if (parameter_is_audio (port_index)) {
552 if (parameter_is_input (port_index)) {
553 slv2_instance_connect_port (_instance, port_index, buffer);
555 } else if (parameter_is_output (port_index)) {
556 slv2_instance_connect_port (_instance, port_index, buffer);
568 : world(slv2_world_new())
570 slv2_world_load_all(world);
571 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
572 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
573 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
574 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
575 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
576 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
577 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
578 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
579 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
580 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
581 gtk_gui = slv2_value_new_uri(world, "http://lv2plug.in/ns/extensions/ui#GtkUI");
584 LV2World::~LV2World()
586 slv2_value_free(input_class);
587 slv2_value_free(output_class);
588 slv2_value_free(control_class);
589 slv2_value_free(audio_class);
590 slv2_value_free(event_class);
591 slv2_value_free(midi_class);
592 slv2_value_free(in_place_broken);
595 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
596 : _lv2_world(lv2_world)
597 , _slv2_plugin(slv2_plugin)
601 LV2PluginInfo::~LV2PluginInfo()
606 LV2PluginInfo::load (Session& session)
611 plugin.reset (new LV2Plugin (session.engine(), session,
612 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin, session.frame_rate()));
614 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
618 catch (failed_constructor &err) {
619 return PluginPtr ((Plugin*) 0);
626 LV2PluginInfo::discover (void* lv2_world)
628 PluginInfoList plugs;
630 LV2World* world = (LV2World*)lv2_world;
631 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
633 for (unsigned i=0; i < slv2_plugins_size(plugins); ++i) {
634 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
635 LV2PluginInfoPtr info (new LV2PluginInfo(lv2_world, p));
637 SLV2Value name = slv2_plugin_get_name(p);
638 info->name = string(slv2_value_as_string(name));
639 slv2_value_free(name);
641 SLV2PluginClass pclass = slv2_plugin_get_class(p);
642 SLV2Value label = slv2_plugin_class_get_label(pclass);
643 info->category = slv2_value_as_string(label);
645 SLV2Value author_name = slv2_plugin_get_author_name(p);
646 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
647 slv2_value_free(author_name);
649 info->path = "/NOPATH"; // Meaningless for LV2
651 info->n_inputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
652 world->input_class, world->audio_class, NULL));
653 info->n_inputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
654 world->input_class, world->event_class, NULL));
656 info->n_outputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
657 world->output_class, world->audio_class, NULL));
658 info->n_outputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
659 world->output_class, world->event_class, NULL));
661 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
662 info->index = 0; // Meaningless for LV2
664 plugs.push_back (info);