public static void RubberBandStretcher_SetKeyFrameMap(IntPtr rbs, IntPtr[] mappingData, int numberOfMappings)
 {
     if (IntPtr.Size == 8)
     {
         RubberBandNativeMethodsx64.RubberBandStretcher_SetKeyFrameMap(rbs, mappingData, numberOfMappings);
     }
     else
     {
         RubberBandNativeMethodsWin32.RubberBandStretcher_SetKeyFrameMap(rbs, mappingData, numberOfMappings);
     }
 }