configurable midi audition synth

gtk2_ardour/rc_option_editor.cc

@@ -35,6 +35,7 @@
 #include "ardour/dB.h"
 #include "ardour/rc_configuration.h"
 #include "ardour/control_protocol_manager.h"
+#include "ardour/plugin_manager.h"
 #include "control_protocol/control_protocol.h"
 
 #include "ardour_window.h"
@@ -1816,6 +1817,31 @@ RCOptionEditor::RCOptionEditor ()
 		     sigc::mem_fun (*_rc_config, &RCConfiguration::set_sound_midi_notes)
 		     ));
 
+	add_option (_("MIDI"), new OptionEditorHeading (_("Midi Audition")));
+
+	ComboOption<std::string>* audition_synth = new ComboOption<std::string> (
+		"midi-audition-synth-uri",
+		_("Midi Audition Synth (LV2)"),
+		sigc::mem_fun (*_rc_config, &RCConfiguration::get_midi_audition_synth_uri),
+		sigc::mem_fun (*_rc_config, &RCConfiguration::set_midi_audition_synth_uri)
+		);
+
+	audition_synth->add(X_(""), _("None"));
+	PluginInfoList all_plugs;
+	PluginManager& manager (PluginManager::instance());
+#ifdef LV2_SUPPORT
+	all_plugs.insert (all_plugs.end(), manager.lv2_plugin_info().begin(), manager.lv2_plugin_info().end());
+
+	for (PluginInfoList::const_iterator i = all_plugs.begin(); i != all_plugs.end(); ++i) {
+		if (manager.get_status (*i) == PluginManager::Hidden) continue;
+		if (!(*i)->is_instrument()) continue;
+		if ((*i)->type != ARDOUR::LV2) continue;
+		audition_synth->add((*i)->unique_id, (*i)->name);
+	}
+#endif
+
+	add_option (_("MIDI"), audition_synth);
+
 	/* USER INTERACTION */
 
 	if (getenv ("ARDOUR_BUNDLED")) {

libs/ardour/ardour/auditioner.h

@@ -123,6 +123,7 @@ class Auditioner : public Track
 	bool via_monitor;
 	bool _midi_audition;
 	bool _synth_added;
+	bool _synth_changed;
 	bool _queue_panic;
 
 	boost::shared_ptr<Diskstream> _diskstream_audio;
@@ -130,6 +131,8 @@ class Auditioner : public Track
 	boost::shared_ptr<Processor> asynth;
 
 	void drop_ports ();
+	void lookup_synth ();
+	void config_changed (std::string);
 	static void *_drop_ports (void *);
 	void actually_drop_ports ();
 	void output_changed (IOChange, void*);

libs/ardour/ardour/rc_configuration_vars.h

@@ -114,7 +114,7 @@ CONFIG_VARIABLE (std::string, monitor_bus_preferred_bundle, "monitor-bus-preferr
 CONFIG_VARIABLE (bool, quieten_at_speed, "quieten-at-speed", true)
 
 CONFIG_VARIABLE (bool, link_send_and_route_panner, "link-send-and-route-panner", true)
-CONFIG_VARIABLE (std::string, midi_audition_synth_uri, "midi-audition-synth-uri,", "https://community.ardour.org/node/7596")
+CONFIG_VARIABLE (std::string, midi_audition_synth_uri, "midi-audition-synth-uri", "https://community.ardour.org/node/7596")
 
 /* click */
 

libs/ardour/auditioner.cc

@@ -51,6 +51,7 @@ Auditioner::Auditioner (Session& s)
 	, via_monitor (false)
 	, _midi_audition (false)
 	, _synth_added (false)
+	, _synth_changed (false)
 	, _queue_panic (false)
 {
 }
@@ -68,6 +69,21 @@ Auditioner::init ()
 
 	_output->add_port ("Midiaudition", this, DataType::MIDI);
 
+	lookup_synth();
+
+	_output->changed.connect_same_thread (*this, boost::bind (&Auditioner::output_changed, this, _1, _2));
+	Config->ParameterChanged.connect_same_thread (*this, boost::bind (&Auditioner::config_changed, this, _1));
+
+	return 0;
+}
+
+Auditioner::~Auditioner ()
+{
+}
+
+void
+Auditioner::lookup_synth ()
+{
 	string plugin_id = Config->get_midi_audition_synth_uri();
 	boost::shared_ptr<Plugin> p;
 	if (!plugin_id.empty()) {
@@ -84,14 +100,14 @@ Auditioner::init ()
 	if (p) {
 		asynth = boost::shared_ptr<Processor> (new PluginInsert (_session, p));
 	}
-
-	_output->changed.connect_same_thread (*this, boost::bind (&Auditioner::output_changed, this, _1, _2));
-
-	return 0;
 }
 
-Auditioner::~Auditioner ()
+void
+Auditioner::config_changed (std::string p)
 {
+	if (p == "midi-audition-synth-uri") {
+		_synth_changed = true;
+	}
 }
 
 int
@@ -393,6 +409,16 @@ Auditioner::audition_region (boost::shared_ptr<Region> region)
 
 		ProcessorStreams ps;
 
+		if (_synth_changed && _synth_added) {
+			remove_processor(asynth);
+			_synth_added = false;
+		}
+		if (_synth_changed && !_synth_added) {
+			_synth_added = false;
+			lookup_synth();
+		}
+
+
 		if (!_synth_added && asynth) {
 			int rv = add_processor_by_index(asynth, PreFader, &ps, true);
 			if (rv) {