2 Copyright (C) 2000 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <sigc++/bind.h>
24 #include "pbd/failed_constructor.h"
25 #include "pbd/xml++.h"
27 #include "ardour/audio_buffer.h"
28 #include "ardour/automation_list.h"
29 #include "ardour/buffer_set.h"
30 #include "ardour/event_type_map.h"
31 #include "ardour/ladspa_plugin.h"
32 #include "ardour/plugin.h"
33 #include "ardour/plugin_insert.h"
34 #include "ardour/port.h"
35 #include "ardour/route.h"
38 #include "ardour/lv2_plugin.h"
42 #include "ardour/vst_plugin.h"
45 #ifdef HAVE_AUDIOUNITS
46 #include "ardour/audio_unit.h"
49 #include "ardour/audioengine.h"
50 #include "ardour/session.h"
51 #include "ardour/types.h"
56 using namespace ARDOUR;
59 const string PluginInsert::port_automation_node_name = "PortAutomation";
61 PluginInsert::PluginInsert (Session& s, boost::shared_ptr<Plugin> plug)
62 : Processor (s, plug->name())
63 , _signal_analysis_collected_nframes(0)
64 , _signal_analysis_collect_nframes_max(0)
66 /* the first is the master */
68 _plugins.push_back (plug);
73 Glib::Mutex::Lock em (_session.engine().process_lock());
74 IO::PortCountChanged (max(input_streams(), output_streams()));
77 ProcessorCreated (this); /* EMIT SIGNAL */
80 PluginInsert::PluginInsert (Session& s, const XMLNode& node)
81 : Processor (s, "unnamed plugin insert"),
82 _signal_analysis_collected_nframes(0),
83 _signal_analysis_collect_nframes_max(0)
85 if (set_state (node)) {
86 throw failed_constructor();
89 // XXX: This would dump all automation, which has already been loaded by
90 // Processor. But this could also have been related to the Parameter change..
91 // will look into this later.
95 Glib::Mutex::Lock em (_session.engine().process_lock());
96 IO::PortCountChanged (max(input_streams(), output_streams()));
101 PluginInsert::set_count (uint32_t num)
103 bool require_state = !_plugins.empty();
105 /* this is a bad idea.... we shouldn't do this while active.
106 only a route holding their redirect_lock should be calling this
111 } else if (num > _plugins.size()) {
112 uint32_t diff = num - _plugins.size();
114 for (uint32_t n = 0; n < diff; ++n) {
115 _plugins.push_back (plugin_factory (_plugins[0]));
118 /* XXX do something */
122 } else if (num < _plugins.size()) {
123 uint32_t diff = _plugins.size() - num;
124 for (uint32_t n= 0; n < diff; ++n) {
133 PluginInsert::init ()
138 PluginInsert::~PluginInsert ()
140 GoingAway (); /* EMIT SIGNAL */
144 PluginInsert::auto_state_changed (Evoral::Parameter which)
146 if (which.type() != PluginAutomation)
149 boost::shared_ptr<AutomationControl> c
150 = boost::dynamic_pointer_cast<AutomationControl>(data().control (which));
152 if (c && ((AutomationList*)c->list().get())->automation_state() != Off) {
153 _plugins[0]->set_parameter (which.id(), c->list()->eval (_session.transport_frame()));
158 PluginInsert::output_streams() const
160 ChanCount out = _plugins.front()->get_info()->n_outputs;
162 if (out == ChanCount::INFINITE) {
163 return _plugins.front()->output_streams ();
165 out.set_audio (out.n_audio() * _plugins.size());
166 out.set_midi (out.n_midi() * _plugins.size());
172 PluginInsert::input_streams() const
174 ChanCount in = _plugins[0]->get_info()->n_inputs;
176 if (in == ChanCount::INFINITE) {
177 return _plugins[0]->input_streams ();
179 in.set_audio (in.n_audio() * _plugins.size());
180 in.set_midi (in.n_midi() * _plugins.size());
186 PluginInsert::natural_output_streams() const
188 return _plugins[0]->get_info()->n_outputs;
192 PluginInsert::natural_input_streams() const
194 return _plugins[0]->get_info()->n_inputs;
198 PluginInsert::is_generator() const
200 /* XXX more finesse is possible here. VST plugins have a
201 a specific "instrument" flag, for example.
204 return _plugins[0]->get_info()->n_inputs.n_audio() == 0;
208 PluginInsert::set_automatable ()
210 set<Evoral::Parameter> a = _plugins.front()->automatable ();
212 Plugin::ParameterDescriptor desc;
214 for (set<Evoral::Parameter>::iterator i = a.begin(); i != a.end(); ++i) {
215 if (i->type() == PluginAutomation) {
217 _plugins.front()->get_parameter_descriptor(i->id(), desc);
218 Evoral::Parameter param(*i);
219 param.set_range(desc.lower, desc.upper, _plugins.front()->default_value(i->id()));
220 boost::shared_ptr<AutomationList> list(new AutomationList(param));
221 add_control(boost::shared_ptr<AutomationControl>(new PluginControl(this, *i, list)));
227 PluginInsert::parameter_changed (Evoral::Parameter which, float val)
229 if (which.type() != PluginAutomation)
232 Plugins::iterator i = _plugins.begin();
234 /* don't set the first plugin, just all the slaves */
236 if (i != _plugins.end()) {
238 for (; i != _plugins.end(); ++i) {
239 (*i)->set_parameter (which, val);
245 PluginInsert::set_block_size (nframes_t nframes)
247 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
248 (*i)->set_block_size (nframes);
253 PluginInsert::activate ()
255 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
261 PluginInsert::deactivate ()
263 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
269 PluginInsert::connect_and_run (BufferSet& bufs, nframes_t nframes, nframes_t offset, bool with_auto, nframes_t now)
271 // Calculate if, and how many frames we need to collect for analysis
272 nframes_t collect_signal_nframes = (_signal_analysis_collect_nframes_max -
273 _signal_analysis_collected_nframes);
274 if (nframes < collect_signal_nframes) { // we might not get all frames now
275 collect_signal_nframes = nframes;
278 ChanMapping in_map(input_streams());
279 ChanMapping out_map(output_streams());
281 /* Note that we've already required that plugins
282 be able to handle in-place processing.
289 for (Controls::iterator li = data().controls().begin(); li != data().controls().end(); ++li, ++n) {
291 boost::shared_ptr<AutomationControl> c
292 = boost::dynamic_pointer_cast<AutomationControl>(li->second);
294 if (c->parameter().type() == PluginAutomation && c->automation_playback()) {
297 const float val = c->list()->rt_safe_eval (now, valid);
307 if (collect_signal_nframes > 0) {
309 //std::cerr << "collect input, bufs " << bufs.count().n_audio() << " count, " << bufs.available().n_audio() << " available" << std::endl;
310 //std::cerr << " streams " << input_streams().n_audio() << std::endl;
311 //std::cerr << "filling buffer with " << collect_signal_nframes << " frames at " << _signal_analysis_collected_nframes << std::endl;
312 for (uint32_t i = 0; i < input_streams().n_audio(); ++i) {
313 _signal_analysis_inputs.get_audio(i).read_from(
315 collect_signal_nframes,
316 _signal_analysis_collected_nframes); // offset is for target buffer
320 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
321 (*i)->connect_and_run(bufs, in_map, out_map, nframes, offset);
322 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
323 in_map.offset_to(*t, natural_input_streams().get(*t));
324 out_map.offset_to(*t, natural_output_streams().get(*t));
328 if (collect_signal_nframes > 0) {
330 //std::cerr << " output, bufs " << bufs.count().n_audio() << " count, " << bufs.available().n_audio() << " available" << std::endl;
331 //std::cerr << " streams " << output_streams().n_audio() << std::endl;
332 for (uint32_t i = 0; i < output_streams().n_audio(); ++i) {
333 _signal_analysis_outputs.get_audio(i).read_from(
335 collect_signal_nframes,
336 _signal_analysis_collected_nframes); // offset is for target buffer
339 _signal_analysis_collected_nframes += collect_signal_nframes;
340 assert(_signal_analysis_collected_nframes <= _signal_analysis_collect_nframes_max);
342 if (_signal_analysis_collected_nframes == _signal_analysis_collect_nframes_max) {
343 _signal_analysis_collect_nframes_max = 0;
344 _signal_analysis_collected_nframes = 0;
346 AnalysisDataGathered(&_signal_analysis_inputs,
347 &_signal_analysis_outputs);
350 /* leave remaining channel buffers alone */
354 PluginInsert::silence (nframes_t nframes)
356 ChanMapping in_map(input_streams());
357 ChanMapping out_map(output_streams());
360 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
361 (*i)->connect_and_run (_session.get_silent_buffers ((*i)->get_info()->n_inputs), in_map, out_map, nframes, 0);
367 PluginInsert::run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes)
371 if (_session.transport_rolling()) {
372 automation_run (bufs, nframes);
374 connect_and_run (bufs, nframes, 0, false);
378 /* FIXME: type, audio only */
380 uint32_t in = _plugins[0]->get_info()->n_inputs.n_audio();
381 uint32_t out = _plugins[0]->get_info()->n_outputs.n_audio();
385 /* not active, but something has make up for any channel count increase */
387 for (uint32_t n = out - in; n < out; ++n) {
388 memcpy (bufs.get_audio(n).data(), bufs.get_audio(in - 1).data(), sizeof (Sample) * nframes);
392 bufs.count().set_audio(out);
397 PluginInsert::set_parameter (Evoral::Parameter param, float val)
399 if (param.type() != PluginAutomation)
402 /* the others will be set from the event triggered by this */
404 _plugins[0]->set_parameter (param.id(), val);
406 boost::shared_ptr<AutomationControl> ac
407 = boost::dynamic_pointer_cast<AutomationControl>(data().control(param));
412 warning << "set_parameter called for nonexistant parameter "
413 << EventTypeMap::instance().to_symbol(param) << endmsg;
416 _session.set_dirty();
420 PluginInsert::get_parameter (Evoral::Parameter param)
422 if (param.type() != PluginAutomation)
426 _plugins[0]->get_parameter (param.id());
430 PluginInsert::automation_run (BufferSet& bufs, nframes_t nframes)
432 Evoral::ControlEvent next_event (0, 0.0f);
433 nframes_t now = _session.transport_frame ();
434 nframes_t end = now + nframes;
435 nframes_t offset = 0;
437 Glib::Mutex::Lock lm (data().control_lock(), Glib::TRY_LOCK);
440 connect_and_run (bufs, nframes, offset, false);
444 if (!data().find_next_event (now, end, next_event)) {
446 /* no events have a time within the relevant range */
448 connect_and_run (bufs, nframes, offset, true, now);
454 nframes_t cnt = min (((nframes_t) ceil (next_event.when) - now), nframes);
456 connect_and_run (bufs, cnt, offset, true, now);
462 if (!data().find_next_event (now, end, next_event)) {
467 /* cleanup anything that is left to do */
470 connect_and_run (bufs, nframes, offset, true, now);
475 PluginInsert::default_parameter_value (const Evoral::Parameter& param)
477 if (param.type() != PluginAutomation)
480 if (_plugins.empty()) {
481 fatal << _("programming error: ") << X_("PluginInsert::default_parameter_value() called with no plugin")
486 return _plugins[0]->default_value (param.id());
489 boost::shared_ptr<Plugin>
490 PluginInsert::plugin_factory (boost::shared_ptr<Plugin> other)
492 boost::shared_ptr<LadspaPlugin> lp;
494 boost::shared_ptr<LV2Plugin> lv2p;
497 boost::shared_ptr<VSTPlugin> vp;
499 #ifdef HAVE_AUDIOUNITS
500 boost::shared_ptr<AUPlugin> ap;
503 if ((lp = boost::dynamic_pointer_cast<LadspaPlugin> (other)) != 0) {
504 return boost::shared_ptr<Plugin> (new LadspaPlugin (*lp));
506 } else if ((lv2p = boost::dynamic_pointer_cast<LV2Plugin> (other)) != 0) {
507 return boost::shared_ptr<Plugin> (new LV2Plugin (*lv2p));
510 } else if ((vp = boost::dynamic_pointer_cast<VSTPlugin> (other)) != 0) {
511 return boost::shared_ptr<Plugin> (new VSTPlugin (*vp));
513 #ifdef HAVE_AUDIOUNITS
514 } else if ((ap = boost::dynamic_pointer_cast<AUPlugin> (other)) != 0) {
515 return boost::shared_ptr<Plugin> (new AUPlugin (*ap));
519 fatal << string_compose (_("programming error: %1"),
520 X_("unknown plugin type in PluginInsert::plugin_factory"))
523 return boost::shared_ptr<Plugin> ((Plugin*) 0);
527 PluginInsert::configure_io (ChanCount in, ChanCount out)
529 if (set_count (count_for_configuration (in, out)) < 0) {
533 /* if we're running replicated plugins, each plugin has
534 the same i/o configuration and we may need to announce how many
535 output streams there are.
537 if we running a single plugin, we need to configure it.
540 if (_plugins.front()->configure_io (in, out) < 0) {
544 // we don't know the analysis window size, so we must work with the
545 // current buffer size here. each request for data fills in these
546 // buffers and the analyser makes sure it gets enough data for the
548 session().ensure_buffer_set (_signal_analysis_inputs, in);
549 _signal_analysis_inputs.set_count (in);
551 session().ensure_buffer_set (_signal_analysis_outputs, out);
552 _signal_analysis_outputs.set_count (out);
554 return Processor::configure_io (in, out);
558 PluginInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
560 // Plugin has flexible I/O, so delegate to it
561 if (_plugins.front()->reconfigurable_io()) {
562 return _plugins.front()->can_support_io_configuration (in, out);
565 ChanCount inputs = _plugins[0]->get_info()->n_inputs;
566 ChanCount outputs = _plugins[0]->get_info()->n_outputs;
568 // Plugin inputs match requested inputs exactly
574 // See if replication is possible
575 // We can replicate if there exists a single factor f such that, for every type,
576 // the number of plugin inputs * f = the requested number of inputs
578 bool can_replicate = true;
579 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
580 // No inputs of this type
581 if (inputs.get(*t) == 0 && in.get(*t) == 0) {
584 // Plugin has more inputs than requested, can not replicate
585 } else if (inputs.get(*t) >= in.get(*t)) {
586 can_replicate = false;
589 // Plugin inputs is not a factor of requested inputs, can not replicate
590 } else if (inputs.get(*t) == 0 || in.get(*t) % inputs.get(*t) != 0) {
591 can_replicate = false;
594 // Potential factor not set yet
596 f = in.get(*t) / inputs.get(*t);;
599 // Factor for this type does not match another type, can not replicate
600 if (f != (in.get(*t) / inputs.get(*t))) {
601 can_replicate = false;
607 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
608 out.set (*t, outputs.get(*t) * f);
616 /* Number of plugin instances required to support a given channel configuration.
620 PluginInsert::count_for_configuration (ChanCount in, ChanCount out) const
622 if (_plugins.front()->reconfigurable_io()) {
623 /* plugin has flexible I/O, so the answer is always 1 */
624 /* this could change if we ever decide to replicate AU's */
628 // FIXME: take 'out' into consideration
630 ChanCount outputs = _plugins[0]->get_info()->n_outputs;
631 ChanCount inputs = _plugins[0]->get_info()->n_inputs;
633 if (inputs.n_total() == 0) {
634 /* instrument plugin, always legal, but throws away any existing streams */
638 if (inputs.n_total() == 1 && outputs == inputs
639 && ((inputs.n_audio() == 0 && in.n_audio() == 0)
640 || (inputs.n_midi() == 0 && in.n_midi() == 0))) {
641 /* mono plugin, replicate as needed to match in */
650 // assumes in is valid, so we must be replicating
651 if (inputs.n_total() < in.n_total()
652 && (in.n_total() % inputs.n_total() == 0)) {
654 return in.n_total() / inputs.n_total();
662 PluginInsert::get_state(void)
668 PluginInsert::state (bool full)
670 XMLNode& node = Processor::state (full);
672 node.add_property("type", _plugins[0]->state_node_name());
673 node.add_property("unique-id", _plugins[0]->unique_id());
674 node.add_property("count", string_compose("%1", _plugins.size()));
675 node.add_child_nocopy (_plugins[0]->get_state());
677 /* add port automation state */
678 //XMLNode *autonode = new XMLNode(port_automation_node_name);
679 set<Evoral::Parameter> automatable = _plugins[0]->automatable();
681 for (set<Evoral::Parameter>::iterator x = automatable.begin(); x != automatable.end(); ++x) {
683 /*XMLNode* child = new XMLNode("port");
684 snprintf(buf, sizeof(buf), "%" PRIu32, *x);
685 child->add_property("number", string(buf));
687 child->add_child_nocopy (automation_list (*x).state (full));
688 autonode->add_child_nocopy (*child);
690 //autonode->add_child_nocopy (((AutomationList*)data().control(*x)->list().get())->state (full));
693 //node.add_child_nocopy (*autonode);
699 PluginInsert::set_state(const XMLNode& node)
701 XMLNodeList nlist = node.children();
702 XMLNodeIterator niter;
703 XMLPropertyList plist;
704 const XMLProperty *prop;
705 ARDOUR::PluginType type;
707 if ((prop = node.property ("type")) == 0) {
708 error << _("XML node describing insert is missing the `type' field") << endmsg;
712 if (prop->value() == X_("ladspa") || prop->value() == X_("Ladspa")) { /* handle old school sessions */
713 type = ARDOUR::LADSPA;
714 } else if (prop->value() == X_("lv2")) {
716 } else if (prop->value() == X_("vst")) {
719 error << string_compose (_("unknown plugin type %1 in plugin insert state"),
725 prop = node.property ("unique-id");
727 error << _("Plugin has no unique ID field") << endmsg;
731 boost::shared_ptr<Plugin> plugin;
733 plugin = find_plugin (_session, prop->value(), type);
736 error << string_compose(_("Found a reference to a plugin (\"%1\") that is unknown.\n"
737 "Perhaps it was removed or moved since it was last used."), prop->value())
744 if ((prop = node.property ("count")) != 0) {
745 sscanf (prop->value().c_str(), "%u", &count);
748 if (_plugins.size() != count) {
750 _plugins.push_back (plugin);
752 for (uint32_t n=1; n < count; ++n) {
753 _plugins.push_back (plugin_factory (plugin));
757 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
758 if ((*niter)->name() == plugin->state_node_name()) {
759 for (Plugins::iterator i = _plugins.begin(); i != _plugins.end(); ++i) {
760 (*i)->set_state (**niter);
766 const XMLNode* insert_node = &node;
768 // legacy sessions: search for child IOProcessor node
769 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
770 if ((*niter)->name() == "IOProcessor") {
771 insert_node = *niter;
776 Processor::set_state (*insert_node);
778 /* look for port automation node */
780 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
782 if ((*niter)->name() != port_automation_node_name) {
788 XMLNodeConstIterator iter;
793 cnodes = (*niter)->children ("Port");
795 for (iter = cnodes.begin(); iter != cnodes.end(); ++iter) {
799 if ((cprop = child->property("number")) != 0) {
800 port = cprop->value().c_str();
802 warning << _("PluginInsert: Auto: no plugin port number") << endmsg;
806 sscanf (port, "%" PRIu32, &port_id);
808 if (port_id >= _plugins[0]->parameter_count()) {
809 warning << _("PluginInsert: Auto: port id out of range") << endmsg;
813 boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl>(
814 data().control(Evoral::Parameter(PluginAutomation, 0, port_id), true));
816 if (!child->children().empty()) {
817 c->alist()->set_state (*child->children().front());
819 if ((cprop = child->property("auto")) != 0) {
824 sscanf (cprop->value().c_str(), "0x%x", &x);
825 c->alist()->set_automation_state (AutoState (x));
831 c->alist()->set_automation_state (Off);
842 if (niter == nlist.end()) {
843 warning << string_compose(_("XML node describing a port automation is missing the `%1' information"), port_automation_node_name) << endmsg;
846 // The name of the PluginInsert comes from the plugin, nothing else
847 _name = plugin->get_info()->name;
853 PluginInsert::describe_parameter (Evoral::Parameter param)
855 if (param.type() != PluginAutomation)
856 return Automatable::describe_parameter(param);
858 return _plugins[0]->describe_parameter (param);
862 PluginInsert::signal_latency() const
865 return _user_latency;
868 return _plugins[0]->signal_latency ();
872 PluginInsert::type ()
874 boost::shared_ptr<LadspaPlugin> lp;
876 boost::shared_ptr<VSTPlugin> vp;
878 #ifdef HAVE_AUDIOUNITS
879 boost::shared_ptr<AUPlugin> ap;
882 PluginPtr other = plugin ();
884 if ((lp = boost::dynamic_pointer_cast<LadspaPlugin> (other)) != 0) {
885 return ARDOUR::LADSPA;
887 } else if ((vp = boost::dynamic_pointer_cast<VSTPlugin> (other)) != 0) {
890 #ifdef HAVE_AUDIOUNITS
891 } else if ((ap = boost::dynamic_pointer_cast<AUPlugin> (other)) != 0) {
892 return ARDOUR::AudioUnit;
896 return (ARDOUR::PluginType) 0;
900 PluginInsert::PluginControl::PluginControl (PluginInsert* p, const Evoral::Parameter ¶m, boost::shared_ptr<AutomationList> list)
901 : AutomationControl (p->session(), param, list, p->describe_parameter(param))
904 Plugin::ParameterDescriptor desc;
905 p->plugin(0)->get_parameter_descriptor (param.id(), desc);
906 _logarithmic = desc.logarithmic;
907 _toggled = desc.toggled;
911 PluginInsert::PluginControl::set_value (float val)
913 /* FIXME: probably should be taking out some lock here.. */
923 /*const float range = _list->get_max_y() - _list->get_min_y();
924 const float lower = _list->get_min_y();
927 val = lower + (range * val);
929 float log_lower = 0.0f;
931 log_lower = log(lower);
934 val = exp(log_lower + log(range) * val);
939 for (Plugins::iterator i = _plugin->_plugins.begin();
940 i != _plugin->_plugins.end(); ++i) {
941 (*i)->set_parameter (_list->parameter().id(), val);
944 boost::shared_ptr<Plugin> iasp = _plugin->_impulseAnalysisPlugin.lock();
946 iasp->set_parameter (_list->parameter().id(), val);
949 AutomationControl::set_value(val);
953 PluginInsert::PluginControl::get_value (void) const
955 /* FIXME: probably should be taking out some lock here.. */
957 float val = _plugin->get_parameter (_list->parameter());
971 return ((val - lower) / range);
975 boost::shared_ptr<Plugin>
976 PluginInsert::get_impulse_analysis_plugin()
978 boost::shared_ptr<Plugin> ret;
979 if (_impulseAnalysisPlugin.expired()) {
980 ret = plugin_factory(_plugins[0]);
981 _impulseAnalysisPlugin = ret;
983 ret = _impulseAnalysisPlugin.lock();
990 PluginInsert::collect_signal_for_analysis(nframes_t nframes)
992 // called from outside the audio thread, so this should be safe
993 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
994 _session.ensure_buffer_set(_signal_analysis_inputs, input_streams());
995 _session.ensure_buffer_set(_signal_analysis_outputs, output_streams());
998 _signal_analysis_collected_nframes = 0;
999 _signal_analysis_collect_nframes_max = nframes;