extensive changes to PresentationInfo API

[ardour.git] / libs / ardour / amp.cc

diff --git a/libs/ardour/amp.cc b/libs/ardour/amp.cc
index 42b8d084cf3bcb0e8ba59ab453ebdb6ddb14721d..a1ffad8e051beeeb9c37293c64cc114760fae3b5 100644 (file)
--- a/libs/ardour/amp.cc
+++ b/libs/ardour/amp.cc
@@ -405,7 +405,7 @@ Amp::visible() const
 }
 
 std::string
-Amp::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+Amp::value_as_string (boost::shared_ptr<const AutomationControl> ac) const
 {
        if (ac == _gain_control) {
                char buffer[32];