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)
51 init (world, plugin, rate);
54 LV2Plugin::LV2Plugin (const LV2Plugin &other)
56 , _world(other._world)
58 init (other._world, other._plugin, other._sample_rate);
60 for (uint32_t i = 0; i < parameter_count(); ++i) {
61 _control_data[i] = other._shadow_data[i];
62 _shadow_data[i] = other._shadow_data[i];
67 LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
73 _latency_control_port = 0;
74 _was_activated = false;
76 _instance = slv2_plugin_instantiate(plugin, rate, NULL);
77 _name = slv2_plugin_get_name(plugin);
79 _author = slv2_plugin_get_author_name(plugin);
82 error << _("LV2: Failed to instantiate plugin ") << slv2_plugin_get_uri(plugin) << endl;
83 throw failed_constructor();
86 if (slv2_plugin_has_feature(plugin, world.in_place_broken)) {
87 error << string_compose(_("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
88 slv2_value_as_string(_name));
89 slv2_value_free(_name);
90 slv2_value_free(_author);
91 throw failed_constructor();
96 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
98 _control_data = new float[num_ports];
99 _shadow_data = new float[num_ports];
100 _defaults = new float[num_ports];
102 const bool latent = slv2_plugin_has_latency(plugin);
103 uint32_t latency_port = (latent ? slv2_plugin_get_latency_port_index(plugin) : 0);
105 for (uint32_t i = 0; i < num_ports; ++i) {
106 if (parameter_is_control(i)) {
107 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
109 slv2_port_get_range(plugin, port, &def, NULL, NULL);
110 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
111 slv2_value_free(def);
113 slv2_instance_connect_port (_instance, i, &_control_data[i]);
115 if (latent && i == latency_port) {
116 _latency_control_port = &_control_data[i];
117 *_latency_control_port = 0;
120 if (parameter_is_input(i)) {
121 _shadow_data[i] = default_value (i);
128 latency_compute_run ();
131 LV2Plugin::~LV2Plugin ()
136 GoingAway (); /* EMIT SIGNAL */
138 slv2_instance_free(_instance);
139 slv2_value_free(_name);
140 slv2_value_free(_author);
143 delete [] _control_data;
147 delete [] _shadow_data;
152 LV2Plugin::unique_id() const
154 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
159 LV2Plugin::default_value (uint32_t port)
161 return _defaults[port];
165 LV2Plugin::set_parameter (uint32_t which, float val)
167 if (which < slv2_plugin_get_num_ports(_plugin)) {
168 _shadow_data[which] = val;
170 ParameterChanged (which, val); /* EMIT SIGNAL */
172 if (which < parameter_count() && controls[which]) {
173 controls[which]->Changed ();
178 warning << string_compose (_("Illegal parameter number used with plugin \"%1\"."
179 "This is a bug in either Ardour or the LV2 plugin (%2)"),
180 name(), unique_id()) << endmsg;
185 LV2Plugin::get_parameter (uint32_t which) const
187 if (parameter_is_input(which)) {
188 return (float) _shadow_data[which];
190 return (float) _control_data[which];
196 LV2Plugin::nth_parameter (uint32_t n, bool& ok) const
202 for (c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
203 if (parameter_is_control (x)) {
215 LV2Plugin::get_state()
217 XMLNode *root = new XMLNode(state_node_name());
220 LocaleGuard lg (X_("POSIX"));
222 for (uint32_t i = 0; i < parameter_count(); ++i){
224 if (parameter_is_input(i) && parameter_is_control(i)) {
225 child = new XMLNode("port");
226 snprintf(buf, sizeof(buf), "%u", i);
227 child->add_property("number", string(buf));
228 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
229 child->add_property("value", string(buf));
230 root->add_child_nocopy (*child);
232 /*if (i < controls.size() && controls[i]) {
233 root->add_child_nocopy (controls[i]->get_state());
242 LV2Plugin::save_preset (string name)
244 return Plugin::save_preset (name, "lv2");
248 LV2Plugin::set_state(const XMLNode& node)
252 XMLNodeConstIterator iter;
257 LocaleGuard lg (X_("POSIX"));
259 if (node.name() != state_node_name()) {
260 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
264 nodes = node.children ("port");
266 for(iter = nodes.begin(); iter != nodes.end(); ++iter){
270 if ((prop = child->property("number")) != 0) {
271 port = prop->value().c_str();
273 warning << _("LV2: no lv2 port number") << endmsg;
277 if ((prop = child->property("value")) != 0) {
278 data = prop->value().c_str();
280 warning << _("LV2: no lv2 port data") << endmsg;
284 sscanf (port, "%" PRIu32, &port_id);
285 set_parameter (port_id, atof(data));
288 latency_compute_run ();
294 LV2Plugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
296 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
298 SLV2Value def, min, max;
299 slv2_port_get_range(_plugin, port, &def, &min, &max);
301 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
302 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
303 desc.logarithmic = false; // TODO (LV2 extension)
304 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
305 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
306 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
307 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
308 desc.min_unbound = false; // TODO (LV2 extension)
309 desc.max_unbound = false; // TODO (LV2 extension)
311 if (desc.integer_step) {
313 desc.smallstep = 0.1;
314 desc.largestep = 10.0;
316 const float delta = desc.upper - desc.lower;
317 desc.step = delta / 1000.0f;
318 desc.smallstep = delta / 10000.0f;
319 desc.largestep = delta/10.0f;
322 slv2_value_free(def);
323 slv2_value_free(min);
324 slv2_value_free(max);
331 LV2Plugin::describe_parameter (Parameter which)
333 if (which.type() == PluginAutomation && which.id() < parameter_count()) {
334 SLV2Value name = slv2_port_get_name(_plugin,
335 slv2_plugin_get_port_by_index(_plugin, which));
336 string ret(slv2_value_as_string(name));
337 slv2_value_free(name);
345 LV2Plugin::signal_latency () const
347 if (_latency_control_port) {
348 return (nframes_t) floor (*_latency_control_port);
355 LV2Plugin::automatable () const
359 for (uint32_t i = 0; i < parameter_count(); ++i){
360 if (parameter_is_input(i) && parameter_is_control(i)) {
361 ret.insert (ret.end(), Parameter(PluginAutomation, i));
369 LV2Plugin::connect_and_run (BufferSet& bufs, uint32_t& in_index, uint32_t& out_index, nframes_t nframes, nframes_t offset)
376 then = get_cycles ();
378 const uint32_t nbufs = bufs.count().n_audio();
380 while (port_index < parameter_count()) {
381 if (parameter_is_audio(port_index)) {
382 if (parameter_is_input(port_index)) {
383 const size_t index = min(in_index, nbufs - 1);
384 slv2_instance_connect_port(_instance, port_index,
385 bufs.get_audio(index).data(nframes, offset));
387 } else if (parameter_is_output(port_index)) {
388 const size_t index = min(out_index,nbufs - 1);
389 slv2_instance_connect_port(_instance, port_index,
390 bufs.get_audio(index).data(nframes, offset));
393 } else if (parameter_is_midi(port_index)) {
394 // FIXME: Switch MIDI buffer format to LV2 event buffer
395 if (parameter_is_input(port_index)) {
396 //const size_t index = min(in_index, nbufs - 1);
397 //slv2_instance_connect_port(_instance, port_index,
398 // bufs.get_midi(index).data(nframes, offset));
399 // FIXME: hope it's connection optional...
400 slv2_instance_connect_port(_instance, port_index, NULL);
402 } else if (parameter_is_output(port_index)) {
403 //const size_t index = min(out_index,nbufs - 1);
404 //slv2_instance_connect_port(_instance, port_index,
405 // bufs.get_midi(index).data(nframes, offset));
406 // FIXME: hope it's connection optional...
407 slv2_instance_connect_port(_instance, port_index, NULL);
416 set_cycles ((uint32_t) (now - then));
422 LV2Plugin::parameter_is_control (uint32_t param) const
424 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
425 return slv2_port_is_a(_plugin, port, _world.control_class);
429 LV2Plugin::parameter_is_audio (uint32_t param) const
431 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
432 return slv2_port_is_a(_plugin, port, _world.audio_class);
436 LV2Plugin::parameter_is_midi (uint32_t param) const
438 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
439 return slv2_port_is_a(_plugin, port, _world.event_class)
440 && slv2_port_supports_event(_plugin, port, _world.midi_class);
444 LV2Plugin::parameter_is_output (uint32_t param) const
446 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
447 return slv2_port_is_a(_plugin, port, _world.output_class);
451 LV2Plugin::parameter_is_input (uint32_t param) const
453 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
454 return slv2_port_is_a(_plugin, port, _world.input_class);
458 LV2Plugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
461 if (param < parameter_count()) {
462 snprintf (buf, len, "%.3f", get_parameter (param));
470 LV2Plugin::run (nframes_t nframes)
472 for (uint32_t i = 0; i < parameter_count(); ++i) {
473 if (parameter_is_control(i) && parameter_is_input(i)) {
474 _control_data[i] = _shadow_data[i];
478 slv2_instance_run(_instance, nframes);
482 LV2Plugin::latency_compute_run ()
484 if (!_latency_control_port) {
488 /* we need to run the plugin so that it can set its latency
494 uint32_t port_index = 0;
495 uint32_t in_index = 0;
496 uint32_t out_index = 0;
497 const nframes_t bufsize = 1024;
498 float buffer[bufsize];
500 memset(buffer,0,sizeof(float)*bufsize);
502 /* Note that we've already required that plugins
503 be able to handle in-place processing.
508 while (port_index < parameter_count()) {
509 if (parameter_is_audio (port_index)) {
510 if (parameter_is_input (port_index)) {
511 slv2_instance_connect_port (_instance, port_index, buffer);
513 } else if (parameter_is_output (port_index)) {
514 slv2_instance_connect_port (_instance, port_index, buffer);
526 : world(slv2_world_new())
528 slv2_world_load_all(world);
529 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
530 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
531 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
532 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
533 event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT);
534 midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI);
535 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
536 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
537 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
538 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
541 LV2World::~LV2World()
543 slv2_value_free(input_class);
544 slv2_value_free(output_class);
545 slv2_value_free(control_class);
546 slv2_value_free(audio_class);
547 slv2_value_free(event_class);
548 slv2_value_free(midi_class);
549 slv2_value_free(in_place_broken);
552 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
553 : _lv2_world(lv2_world)
554 , _slv2_plugin(slv2_plugin)
558 LV2PluginInfo::~LV2PluginInfo()
563 LV2PluginInfo::load (Session& session)
568 plugin.reset (new LV2Plugin (session.engine(), session,
569 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin, session.frame_rate()));
571 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
575 catch (failed_constructor &err) {
576 return PluginPtr ((Plugin*) 0);
583 LV2PluginInfo::discover (void* lv2_world)
585 PluginInfoList plugs;
587 LV2World* world = (LV2World*)lv2_world;
588 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
590 for (unsigned i=0; i < slv2_plugins_size(plugins); ++i) {
591 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
592 LV2PluginInfoPtr info (new LV2PluginInfo(lv2_world, p));
594 SLV2Value name = slv2_plugin_get_name(p);
595 info->name = string(slv2_value_as_string(name));
596 slv2_value_free(name);
598 SLV2PluginClass pclass = slv2_plugin_get_class(p);
599 SLV2Value label = slv2_plugin_class_get_label(pclass);
600 info->category = slv2_value_as_string(label);
602 SLV2Value author_name = slv2_plugin_get_author_name(p);
603 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
604 slv2_value_free(author_name);
606 info->path = "/NOPATH"; // Meaningless for LV2
608 info->n_inputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
609 world->input_class, world->audio_class, NULL));
610 info->n_inputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
611 world->input_class, world->event_class, NULL));
613 info->n_outputs.set_audio(slv2_plugin_get_num_ports_of_class(p,
614 world->output_class, world->audio_class, NULL));
615 info->n_outputs.set_midi(slv2_plugin_get_num_ports_of_class(p,
616 world->output_class, world->event_class, NULL));
618 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
619 info->index = 0; // Meaningless for LV2
621 plugs.push_back (info);