--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/satengine/SatServer/Engine/inc/TSatBitOP.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,81 @@
+/*
+* Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Extracts a bits from byte row.
+*
+*/
+
+
+
+#ifndef TSATBITOP_H
+#define TSATBITOP_H
+
+//  INCLUDES
+#include <e32std.h>
+
+// CLASS DECLARATION
+
+/**
+*  Bit manipulations
+*
+*  @lib SatEngine.lib
+*  @since 2.6
+*/
+class TSatBitOP
+    {
+    public: // New functions
+
+        /**
+        * Extracts bits from byte row.
+        * Following assumptions is made about parameters:
+        *  aBitCount is 1 to 8.
+        * @param aBitIndex Index to bit, where extraction starts. Index of
+        * MSB from aBytes[0] is 0.
+        * @param aBitCount Number of extracted bits.
+        * @param aBytes Array of bytes where bits are extracted.
+        * @return Value of extracted bits.
+        */
+        static TUint8 ExtractBits(
+            TInt aBitIndex,
+            TUint8 aBitCount,
+            const TDesC8& aBytes );
+
+        /**
+        * Creates a mask of ones, starting from aBitIndex
+        * to aBitIndex + aCount.
+        * if aMSB is 5 and aCount is 2 then the mask would be
+        * 0011 0000.
+        * @param aBitIndex. 0 means MSB and 7 is LSB.
+        * @param aCount 1 to 8.
+        * @return Mask.
+        */
+        static TUint8 CreateMask8Bit(
+            TUint8 aBitIndex,
+            TUint8 aCount );
+
+        /**
+        * Creates a mask of ones, starting from aBitIndex to aBitIndex +
+        * aCount.
+        * @param aBitIndex 0 means MSB and 15 means LSB.
+        * @param aCount 1 to 16.
+        * @return Mask of ones.
+        */
+        static TUint16 CreateMask16Bit(
+            TUint8 aBitIndex,
+            TUint8 aCount );
+
+    };
+
+#endif      // TSATBITOP_H
+
+// End of File