From 8ad30bb76ed9d90ce3f8e4698ec68a425067a3a9 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 22 Jan 2014 23:59:24 +0100
Subject: configurable midi audition synth

---
 libs/ardour/ardour/auditioner.h            |  3 +++
 libs/ardour/ardour/rc_configuration_vars.h |  2 +-
 libs/ardour/auditioner.cc                  | 36 +++++++++++++++++++++++++-----
 3 files changed, 35 insertions(+), 6 deletions(-)

(limited to 'libs')

diff --git a/libs/ardour/ardour/auditioner.h b/libs/ardour/ardour/auditioner.h
index fdebc8a931..e73824b669 100644
--- a/libs/ardour/ardour/auditioner.h
+++ b/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*);
diff --git a/libs/ardour/ardour/rc_configuration_vars.h b/libs/ardour/ardour/rc_configuration_vars.h
index 431ef84a59..3c74f067ae 100644
--- a/libs/ardour/ardour/rc_configuration_vars.h
+++ b/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 */
 
diff --git a/libs/ardour/auditioner.cc b/libs/ardour/auditioner.cc
index fd640f8e3e..3e382625a0 100644
--- a/libs/ardour/auditioner.cc
+++ b/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) {
-- 
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