Include ParameterDescriptor in read-only control output

3 files changed, 11 insertions, 6 deletions

diff --git a/libs/ardour/ardour/readonly_control.h b/libs/ardour/ardour/readonly_control.h
index 8a2901af68..b88deaffe2 100644
--- a/libs/ardour/ardour/readonly_control.h
+++ b/libs/ardour/ardour/readonly_control.h
@@ -21,6 +21,7 @@
 #define __ardour_readonly_control_h__
 
 #include <boost/weak_ptr.hpp>
+#include "ardour/parameter_descriptor.h"
 
 namespace ARDOUR {
 
@@ -29,13 +30,15 @@ class Plugin;
 class LIBARDOUR_API ReadOnlyControl : public PBD::Destructible
 {
 public:
-	ReadOnlyControl (boost::shared_ptr<Plugin> p, uint32_t pnum);
+	ReadOnlyControl (boost::shared_ptr<Plugin>, const ParameterDescriptor&, uint32_t pnum);
 
 	double get_parameter () const;
 	std::string describe_parameter ();
+	const ParameterDescriptor& desc() const { return _desc; }
 
 private:
 	boost::weak_ptr<Plugin> _plugin;
+	const ParameterDescriptor _desc;
 	uint32_t _parameter_num;
 };
 
diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index c20464be89..ece0fbe40d 100644
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -458,15 +458,16 @@ PluginInsert::create_automatable_parameters ()
 		if (!plugin->parameter_is_control (i)) {
 			continue;
 		}
+
+		ParameterDescriptor desc;
+		plugin->get_parameter_descriptor(i, desc);
+
 		if (!plugin->parameter_is_input (i)) {
-			_control_outputs[i] = boost::shared_ptr<ReadOnlyControl> (new ReadOnlyControl (plugin, i));
+			_control_outputs[i] = boost::shared_ptr<ReadOnlyControl> (new ReadOnlyControl (plugin, desc, i));
 			continue;
 		}
 		Evoral::Parameter param (PluginAutomation, 0, i);
 
-		ParameterDescriptor desc;
-		plugin->get_parameter_descriptor(i, desc);
-
 		const bool automatable = a.find(param) != a.end();
 
 		if (automatable) {
diff --git a/libs/ardour/readonly_control.cc b/libs/ardour/readonly_control.cc
index 3b72ac5e1b..e09a9f0776 100644
--- a/libs/ardour/readonly_control.cc
+++ b/libs/ardour/readonly_control.cc
@@ -24,8 +24,9 @@
 
 using namespace ARDOUR;
 
-ReadOnlyControl::ReadOnlyControl (boost::shared_ptr<Plugin> p, uint32_t pnum)
+ReadOnlyControl::ReadOnlyControl (boost::shared_ptr<Plugin> p, const ParameterDescriptor& desc, uint32_t pnum)
 		: _plugin (boost::weak_ptr<Plugin> (p))
+		, _desc (desc)
 		, _parameter_num (pnum)
 { }