* #9782: GainControl::limit should be const

daemon/src/audio/gaincontrol.cpp

@@ -82,7 +82,7 @@ double GainControl::DetectionAverage::getAverage(double in)
 GainControl::Limiter::Limiter(double r, double thresh) : ratio_(r), threshold_(thresh)
 {}
 
-double GainControl::Limiter::limit(double in)
+double GainControl::Limiter::limit(double in) const
 {
     double out = (in > threshold_ ? (ratio_ * (in - threshold_)) + threshold_ :
            in < -threshold_ ? (ratio_ * (in + threshold_)) - threshold_ : in);

daemon/src/audio/gaincontrol.h

@@ -80,7 +80,7 @@ class GainControl {
                 /**
                  * Perform compression on input signal
                  */
-                double limit(double);
+                double limit(double) const;
 
             private:
                 double ratio_;