KMix: fixed rounding error on volume reading. This was preventing 1% volume increase steps from working properly.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

kmix/kmix.h

@@ -65,7 +65,7 @@ KMixWindow : public TDEMainWindow, virtual public KMixIface
    void setVolume(int percentage);
    void increaseVolume(int percentage);
    void decreaseVolume(int percentage);
-   int volume();
+   int  volume();
 
    void setAbsoluteVolume(long absoluteVolume);
    long absoluteVolume();

kmix/mixer.cpp

@@ -570,7 +570,9 @@ int Mixer::volume( int deviceidx )
   }
   else
   {
-     return ( vol.getVolume( Volume::LEFT )*100) / volumeRange ;
+     // Make sure to round correctly, otherwise the volume level will always be 1% too low
+     // and increments of 1% of top of the value read will result in no change to the actual level
+     return ((100.0 * vol.getVolume(Volume::LEFT) + volumeRange / 2) / volumeRange);
   }
 }