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)
74 _latency_control_port = 0;
75 _was_activated = false;
77 _instance = slv2_plugin_instantiate(plugin, rate, NULL);
78 _name = slv2_plugin_get_name(plugin);
80 _author = slv2_plugin_get_author_name(plugin);
83 error << _("LV2: Failed to instantiate plugin ") << slv2_plugin_get_uri(plugin) << endl;
84 throw failed_constructor();
87 if (slv2_plugin_has_feature(plugin, world.in_place_broken)) {
88 error << string_compose(_("LV2: \"%1\" cannot be used, since it cannot do inplace processing"),
89 slv2_value_as_string(_name));
90 slv2_value_free(_name);
91 slv2_value_free(_author);
92 throw failed_constructor();
97 const uint32_t num_ports = slv2_plugin_get_num_ports(plugin);
99 _control_data = new float[num_ports];
100 _shadow_data = new float[num_ports];
101 _defaults = new float[num_ports];
103 const bool latent = slv2_plugin_has_latency(plugin);
104 uint32_t latency_port = (latent ? slv2_plugin_get_latency_port_index(plugin) : 0);
106 for (uint32_t i = 0; i < num_ports; ++i) {
107 if (parameter_is_control(i)) {
108 SLV2Port port = slv2_plugin_get_port_by_index(plugin, i);
110 slv2_port_get_range(plugin, port, &def, NULL, NULL);
111 _defaults[i] = def ? slv2_value_as_float(def) : 0.0f;
112 slv2_value_free(def);
114 slv2_instance_connect_port (_instance, i, &_control_data[i]);
116 if (latent && i == latency_port) {
117 _latency_control_port = &_control_data[i];
118 *_latency_control_port = 0;
121 if (parameter_is_input(i)) {
122 _shadow_data[i] = default_value (i);
129 SLV2UIs uis = slv2_plugin_get_uis(_plugin);
130 if (slv2_uis_size(uis) > 0) {
131 for (unsigned i=0; i < slv2_uis_size(uis); ++i) {
132 SLV2UI ui = slv2_uis_get_at(uis, i);
133 if (slv2_ui_is_a(ui, _world.gtk_gui)) {
140 Plugin::setup_controls ();
142 latency_compute_run ();
145 LV2Plugin::~LV2Plugin ()
150 GoingAway (); /* EMIT SIGNAL */
152 slv2_instance_free(_instance);
153 slv2_value_free(_name);
154 slv2_value_free(_author);
157 delete [] _control_data;
161 delete [] _shadow_data;
166 LV2Plugin::unique_id() const
168 return slv2_value_as_uri(slv2_plugin_get_uri(_plugin));
173 LV2Plugin::default_value (uint32_t port)
175 return _defaults[port];
179 LV2Plugin::set_parameter (uint32_t which, float val)
181 if (which < slv2_plugin_get_num_ports(_plugin)) {
182 _shadow_data[which] = val;
183 ParameterChanged (which, val); /* EMIT SIGNAL */
185 if (which < parameter_count() && controls[which]) {
186 controls[which]->Changed ();
190 warning << string_compose (_("Illegal parameter number used with plugin \"%1\"."
191 "This is a bug in either Ardour or the LV2 plugin (%2)"),
192 name(), unique_id()) << endmsg;
197 LV2Plugin::get_parameter (uint32_t which) const
199 if (parameter_is_input(which)) {
200 return (float) _shadow_data[which];
202 return (float) _control_data[which];
208 LV2Plugin::nth_parameter (uint32_t n, bool& ok) const
214 for (c = 0, x = 0; x < slv2_plugin_get_num_ports(_plugin); ++x) {
215 if (parameter_is_control (x)) {
227 LV2Plugin::get_state()
229 XMLNode *root = new XMLNode(state_node_name());
232 LocaleGuard lg (X_("POSIX"));
234 for (uint32_t i = 0; i < parameter_count(); ++i){
236 if (parameter_is_input(i) && parameter_is_control(i)) {
237 child = new XMLNode("port");
238 snprintf(buf, sizeof(buf), "%u", i);
239 child->add_property("number", string(buf));
240 snprintf(buf, sizeof(buf), "%+f", _shadow_data[i]);
241 child->add_property("value", string(buf));
242 root->add_child_nocopy (*child);
244 if (i < controls.size() && controls[i]) {
245 root->add_child_nocopy (controls[i]->get_state());
254 LV2Plugin::save_preset (string name)
256 return Plugin::save_preset (name, "lv2");
260 LV2Plugin::has_editor() const
262 return (_ui != NULL);
266 LV2Plugin::set_state(const XMLNode& node)
270 XMLNodeConstIterator iter;
275 LocaleGuard lg (X_("POSIX"));
277 if (node.name() != state_node_name()) {
278 error << _("Bad node sent to LV2Plugin::set_state") << endmsg;
282 nodes = node.children ("port");
284 for(iter = nodes.begin(); iter != nodes.end(); ++iter){
288 if ((prop = child->property("number")) != 0) {
289 port = prop->value().c_str();
291 warning << _("LV2: no lv2 port number") << endmsg;
295 if ((prop = child->property("value")) != 0) {
296 data = prop->value().c_str();
298 warning << _("LV2: no lv2 port data") << endmsg;
302 sscanf (port, "%" PRIu32, &port_id);
303 set_parameter (port_id, atof(data));
306 latency_compute_run ();
312 LV2Plugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
314 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, which);
316 SLV2Value def, min, max;
317 slv2_port_get_range(_plugin, port, &def, &min, &max);
319 desc.integer_step = slv2_port_has_property(_plugin, port, _world.integer);
320 desc.toggled = slv2_port_has_property(_plugin, port, _world.toggled);
321 desc.logarithmic = false; // TODO (LV2 extension)
322 desc.sr_dependent = slv2_port_has_property(_plugin, port, _world.srate);
323 desc.label = slv2_value_as_string(slv2_port_get_name(_plugin, port));
324 desc.lower = min ? slv2_value_as_float(min) : 0.0f;
325 desc.upper = max ? slv2_value_as_float(max) : 1.0f;
326 desc.min_unbound = false; // TODO (LV2 extension)
327 desc.max_unbound = false; // TODO (LV2 extension)
329 if (desc.integer_step) {
331 desc.smallstep = 0.1;
332 desc.largestep = 10.0;
334 const float delta = desc.upper - desc.lower;
335 desc.step = delta / 1000.0f;
336 desc.smallstep = delta / 10000.0f;
337 desc.largestep = delta/10.0f;
340 slv2_value_free(def);
341 slv2_value_free(min);
342 slv2_value_free(max);
349 LV2Plugin::describe_parameter (uint32_t which)
351 if (which < parameter_count()) {
352 SLV2Value name = slv2_port_get_name(_plugin,
353 slv2_plugin_get_port_by_index(_plugin, which));
354 string ret(slv2_value_as_string(name));
355 slv2_value_free(name);
363 LV2Plugin::latency () const
365 if (_latency_control_port) {
366 return (nframes_t) floor (*_latency_control_port);
373 LV2Plugin::automatable () const
377 for (uint32_t i = 0; i < parameter_count(); ++i){
378 if (parameter_is_input(i) && parameter_is_control(i)) {
379 ret.insert (ret.end(), i);
387 LV2Plugin::connect_and_run (vector<Sample*>& bufs, uint32_t nbufs, int32_t& in_index, int32_t& out_index, nframes_t nframes, nframes_t offset)
394 then = get_cycles ();
396 while (port_index < parameter_count()) {
397 if (parameter_is_audio(port_index)) {
398 if (parameter_is_input(port_index)) {
399 slv2_instance_connect_port(_instance, port_index,
400 bufs[min((uint32_t)in_index, nbufs - 1)] + offset);
402 } else if (parameter_is_output(port_index)) {
403 slv2_instance_connect_port(_instance, port_index,
404 bufs[min((uint32_t)out_index, nbufs - 1)] + offset);
413 set_cycles ((uint32_t) (now - then));
419 LV2Plugin::parameter_is_control (uint32_t param) const
421 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
422 return slv2_port_is_a(_plugin, port, _world.control_class);
426 LV2Plugin::parameter_is_audio (uint32_t param) const
428 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
429 return slv2_port_is_a(_plugin, port, _world.audio_class);
433 LV2Plugin::parameter_is_output (uint32_t param) const
435 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
436 return slv2_port_is_a(_plugin, port, _world.output_class);
440 LV2Plugin::parameter_is_input (uint32_t param) const
442 SLV2Port port = slv2_plugin_get_port_by_index(_plugin, param);
443 return slv2_port_is_a(_plugin, port, _world.input_class);
447 LV2Plugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
450 if (param < parameter_count()) {
451 snprintf (buf, len, "%.3f", get_parameter (param));
459 LV2Plugin::run (nframes_t nframes)
461 for (uint32_t i = 0; i < parameter_count(); ++i) {
462 if (parameter_is_control(i) && parameter_is_input(i)) {
463 _control_data[i] = _shadow_data[i];
467 slv2_instance_run(_instance, nframes);
471 LV2Plugin::latency_compute_run ()
473 if (!_latency_control_port) {
477 /* we need to run the plugin so that it can set its latency
483 uint32_t port_index = 0;
484 uint32_t in_index = 0;
485 uint32_t out_index = 0;
486 const nframes_t bufsize = 1024;
487 float buffer[bufsize];
489 memset(buffer,0,sizeof(float)*bufsize);
491 /* Note that we've already required that plugins
492 be able to handle in-place processing.
497 while (port_index < parameter_count()) {
498 if (parameter_is_audio (port_index)) {
499 if (parameter_is_input (port_index)) {
500 slv2_instance_connect_port (_instance, port_index, buffer);
502 } else if (parameter_is_output (port_index)) {
503 slv2_instance_connect_port (_instance, port_index, buffer);
515 : world(slv2_world_new())
517 slv2_world_load_all(world);
518 input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
519 output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
520 control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
521 audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
522 in_place_broken = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "inPlaceBroken");
523 integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
524 toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
525 srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
526 gtk_gui = slv2_value_new_uri(world, "http://lv2plug.in/ns/extensions/ui#GtkUI");
529 LV2World::~LV2World()
531 slv2_value_free(input_class);
532 slv2_value_free(output_class);
533 slv2_value_free(control_class);
534 slv2_value_free(audio_class);
535 slv2_value_free(in_place_broken);
538 LV2PluginInfo::LV2PluginInfo (void* lv2_world, void* slv2_plugin)
539 : _lv2_world(lv2_world)
540 , _slv2_plugin(slv2_plugin)
544 LV2PluginInfo::~LV2PluginInfo()
549 LV2PluginInfo::load (Session& session)
554 plugin.reset (new LV2Plugin (session.engine(), session,
555 *(LV2World*)_lv2_world, (SLV2Plugin)_slv2_plugin, session.frame_rate()));
557 plugin->set_info(PluginInfoPtr(new LV2PluginInfo(*this)));
561 catch (failed_constructor &err) {
562 return PluginPtr ((Plugin*) 0);
569 LV2PluginInfo::discover (void* lv2_world)
571 PluginInfoList plugs;
573 LV2World* world = (LV2World*)lv2_world;
574 SLV2Plugins plugins = slv2_world_get_all_plugins(world->world);
576 for (unsigned i=0; i < slv2_plugins_size(plugins); ++i) {
577 SLV2Plugin p = slv2_plugins_get_at(plugins, i);
578 LV2PluginInfoPtr info (new LV2PluginInfo(lv2_world, p));
580 SLV2Value name = slv2_plugin_get_name(p);
581 info->name = string(slv2_value_as_string(name));
582 slv2_value_free(name);
584 SLV2PluginClass pclass = slv2_plugin_get_class(p);
585 SLV2Value label = slv2_plugin_class_get_label(pclass);
586 info->category = slv2_value_as_string(label);
588 SLV2Value author_name = slv2_plugin_get_author_name(p);
589 info->creator = author_name ? string(slv2_value_as_string(author_name)) : "Unknown";
590 slv2_value_free(author_name);
592 info->path = "/NOPATH"; // Meaningless for LV2
594 info->n_inputs = slv2_plugin_get_num_ports_of_class(p,
595 world->input_class, world->audio_class, NULL);
597 info->n_outputs = slv2_plugin_get_num_ports_of_class(p,
598 world->output_class, world->audio_class, NULL);
600 info->unique_id = slv2_value_as_uri(slv2_plugin_get_uri(p));
601 info->index = 0; // Meaningless for LV2
603 plugs.push_back (info);