cmApBuf.h/c: Limit the meter update parameter (meterMs) to the range 10-1000.

cmApBuf.c

 
   _cmApBuf.devArray        = cmMemAllocZ( cmApDev, devCnt );
   _cmApBuf.devCnt          = devCnt;
-  _cmApBuf.meterMs         = meterMs;
+  cmApBufSetMeterMs(meterMs);
   return kOkAbRC;
 }
 
 unsigned cmApBufMeterMs()
 { return _cmApBuf.meterMs; }
 
+void     cmApBufSetMeterMs( unsigned meterMs )
+{
+  _cmApBuf.meterMs = cmMin(1000,cmMax(10,meterMs));
+}
+
 unsigned cmApBufChannelCount( unsigned devIdx, unsigned flags )
 {
   if( devIdx == cmInvalidIdx )

cmApBuf.h

 
   /// Allocate and initialize an audio buffer.
   /// devCnt - count of devices this buffer will handle.
-  /// meterMs - length of the meter buffers in milliseconds
+  /// meterMs - length of the meter buffers in milliseconds (automatically limit to the range:10 to 1000)
   cmAbRC_t cmApBufInitialize( unsigned devCnt, unsigned meterMs );
 
   /// Deallocate and release any resource held by an audio buffer allocated via cmApBufInitialize().
 
   /// Return the meter window period as set by cmApBufInitialize()
   unsigned cmApBufMeterMs();
+  
+  // Set the meter update period. THis function limits the value to between 10 and 1000.
+  void     cmApBufSetMeterMs( unsigned meterMs );
 
   /// Returns the channel count set via cmApBufSetup().
   unsigned cmApBufChannelCount( unsigned devIdx, unsigned flags );