VCA API-change: return created VCAs (handy for Lua scripts)

[ardour.git] / libs / ardour / ardour / parameter_descriptor.h

diff --git a/libs/ardour/ardour/parameter_descriptor.h b/libs/ardour/ardour/parameter_descriptor.h
index c95b028aaa4a8332f8183b8d41d866df85cffbe9..87363bb2c31b46e9782868d7427de873059cd5e7 100644 (file)
--- a/libs/ardour/ardour/parameter_descriptor.h
+++ b/libs/ardour/ardour/parameter_descriptor.h
@@ -77,6 +77,17 @@ struct LIBARDOUR_API ParameterDescriptor : public Evoral::ParameterDescriptor
        float compute_delta (float from, float to) const;
        float apply_delta (float value, float delta) const;
 
+       /* find the closest scale-point, return the internal value of
+        * the prev/next scale-point (no wrap-around)
+        *
+        * If the given parameter is not en enum, the given val is returned.
+        *
+        * @param val internal (not interface) value
+        * @param prev if true, step to prev scale-point, otherwise next
+        * @return internal value, suitable for set_value()
+        */
+       float step_enum (float val, bool prev) const;
+
        /** Set step, smallstep, and largestep, based on current description. */
        void update_steps();