From addb33bc630721e623f90b6f3e920eedcdc40742 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Thu, 6 Jun 2013 11:14:31 -0400
Subject: [PATCH] implement OSC /ardour/route/send/gainabs and
 /ardour/route/send/gainDB

---
 libs/pbd/controllable_descriptor.cc |  3 +-
 libs/surfaces/osc/osc.cc            | 66 ++++++++++++++++++++++++++++-
 libs/surfaces/osc/osc.h             |  4 ++
 3 files changed, 70 insertions(+), 3 deletions(-)

diff --git a/libs/pbd/controllable_descriptor.cc b/libs/pbd/controllable_descriptor.cc
index 392b917ec8..9c930e4dbd 100644
--- a/libs/pbd/controllable_descriptor.cc
+++ b/libs/pbd/controllable_descriptor.cc
@@ -104,10 +104,11 @@ ControllableDescriptor::set (const std::string& str)
 		}
 	} else if (path[1] == "send") {
 		
-		if (path.size() == 3 && rest.size() == 2) {
+		if (path.size() == 3 && rest.size() == 3) {
 			if (path[2] == "gain") {
 				_subtype = SendGain;
 				_target.push_back (atoi (rest[1]));
+				_target.push_back (atoi (rest[2]));
 			} else {
 				return -1;
 			}
diff --git a/libs/surfaces/osc/osc.cc b/libs/surfaces/osc/osc.cc
index 357b82d4d2..ef07ca17fb 100644
--- a/libs/surfaces/osc/osc.cc
+++ b/libs/surfaces/osc/osc.cc
@@ -356,8 +356,8 @@ OSC::register_callbacks()
 		REGISTER_CALLBACK (serv, "/ardour/routes/pan_stereo_width", "if", route_set_pan_stereo_width);
 		REGISTER_CALLBACK (serv, "/ardour/routes/plugin/parameter", "iiif", route_plugin_parameter);
 		REGISTER_CALLBACK (serv, "/ardour/routes/plugin/parameter/print", "iii", route_plugin_parameter_print);
-
-		
+		REGISTER_CALLBACK (serv, "/ardour/routes/send/gainabs", "iif", route_set_send_gain_abs);
+		REGISTER_CALLBACK (serv, "/ardour/routes/send/gaindB", "iif", route_set_send_gain_dB);
 
 		/* still not-really-standardized query interface */
 		//REGISTER_CALLBACK (serv, "/ardour/*/#current_value", "", current_value);
@@ -891,6 +891,68 @@ OSC::route_set_pan_stereo_width (int rid, float pos)
 
 }
 
+int
+OSC::route_set_send_gain_abs (int rid, int sid, float val)
+{
+        if (!session) { 
+                return -1;
+        }
+
+        boost::shared_ptr<Route> r = session->route_by_remote_id (rid);  
+
+        if (!r) {
+                return -1;
+        }
+
+	/* revert to zero-based counting */
+
+	if (sid > 0) {
+		--sid;
+	}
+
+	boost::shared_ptr<Processor> p = r->nth_send (send);
+	
+	if (p) {
+		boost::shared_ptr<Send> s = boost::dynamic_pointer_cast<Send>(p);
+		boost::shared_ptr<Amp> a = s->amp();
+		
+		if (a) {
+			a->set_gain (val, this);
+		}
+	}
+}
+
+int
+OSC::route_set_send_gain_dB (int rid, int sid, float val)
+{
+        if (!session) { 
+                return -1;
+        }
+
+        boost::shared_ptr<Route> r = session->route_by_remote_id (rid);  
+
+        if (!r) {
+                return -1;
+        }
+
+	/* revert to zero-based counting */
+
+	if (sid > 0) {
+		--sid;
+	}
+
+	boost::shared_ptr<Processor> p = r->nth_send (send);
+	
+	if (p) {
+		boost::shared_ptr<Send> s = boost::dynamic_pointer_cast<Send>(p);
+		boost::shared_ptr<Amp> a = s->amp();
+		
+		if (a) {
+			a->set_gain (dB_to_coefficient (val), this);
+		}
+	}
+}
+
 int
 OSC::route_plugin_parameter (int rid, int piid, int par, float val)
 {
diff --git a/libs/surfaces/osc/osc.h b/libs/surfaces/osc/osc.h
index c09792ec64..5c3422799b 100644
--- a/libs/surfaces/osc/osc.h
+++ b/libs/surfaces/osc/osc.h
@@ -214,6 +214,8 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
 	PATH_CALLBACK2(route_set_gain_dB,i,f);
 	PATH_CALLBACK2(route_set_pan_stereo_position,i,f);
 	PATH_CALLBACK2(route_set_pan_stereo_width,i,f);
+        PATH_CALLBACK3(route_set_send_gain_abs,i,i,f);
+        PATH_CALLBACK3(route_set_send_gain_dB,i,i,f);
         PATH_CALLBACK4(route_plugin_parameter,i,i,i,f);
         PATH_CALLBACK3(route_plugin_parameter_print,i,i,i); 
 
@@ -224,6 +226,8 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
 	int route_set_gain_dB (int rid, float dB);
 	int route_set_pan_stereo_position (int rid, float left_right_fraction);
 	int route_set_pan_stereo_width (int rid, float percent);
+	int route_set_send_gain_abs (int rid, int sid, float val);
+	int route_set_send_gain_dB (int rid, int sid, float val);
 	int route_plugin_parameter (int rid, int piid,int par, float val);
 	int route_plugin_parameter_print (int rid, int piid,int par);