williamr@2: // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@2: // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
williamr@2: // which accompanies this distribution, and is available
williamr@2: // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: //
williamr@2: 
williamr@2: #if !defined(__VJCOMP_INL_)
williamr@2: #define __VJCOMP_INL_
williamr@2: 
williamr@2: /**
williamr@2: Tests if the delta value is compressible into the 16 bit VJ delta format.
williamr@2: The aDelta value actually needs a 33 bit signed integer to hold the entire
williamr@2: possible range, but the twos complement math works out if it's just
williamr@2: stored as a 32 bit unsigned integer.
williamr@2: 
williamr@2: @param aDelta Delta value to test
williamr@2: 
williamr@2: @return ETrue if the value is compressible
williamr@2: */
williamr@2: inline TBool CVJCompressor::IsDeltaCompressible(TUint32 aDelta) const
williamr@2: 	{
williamr@2: 	// This test is a faster equivalent to:
williamr@2: 	//    (aDelta >= 0) && (aDelta <= 0xffff)
williamr@2: 	// if aDelta were signed
williamr@2: 	return !(aDelta & 0xffff0000);
williamr@2: 	}
williamr@2: 
williamr@2: 
williamr@2: inline TUint8* CVJCompressor::GetTCPOpts(ThdrTCP* aTCPHeader) const
williamr@2: /**
williamr@2: Returns a pointer to the start of the TCP options (if there are any).
williamr@2: 
williamr@2: @param aTCPHeader TCP header
williamr@2: 
williamr@2: @return Start of the TCP options
williamr@2: */
williamr@2: 	{
williamr@2: 	TUint8* aPtr = (TUint8*)aTCPHeader+KTCPHeaderSize;
williamr@2: 	return aPtr;
williamr@2: 	}
williamr@2: 
williamr@2: 
williamr@2: 
williamr@2: #endif // __VJCOMP_INL_