1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/networking/vjcomp.inl	Tue Mar 16 16:12:26 2010 +0000
     1.3 @@ -0,0 +1,53 @@
     1.4 +// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// 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
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#if !defined(__VJCOMP_INL_)
    1.20 +#define __VJCOMP_INL_
    1.21 +
    1.22 +/**
    1.23 +Tests if the delta value is compressible into the 16 bit VJ delta format.
    1.24 +The aDelta value actually needs a 33 bit signed integer to hold the entire
    1.25 +possible range, but the twos complement math works out if it's just
    1.26 +stored as a 32 bit unsigned integer.
    1.27 +
    1.28 +@param aDelta Delta value to test
    1.29 +
    1.30 +@return ETrue if the value is compressible
    1.31 +*/
    1.32 +inline TBool CVJCompressor::IsDeltaCompressible(TUint32 aDelta) const
    1.33 +	{
    1.34 +	// This test is a faster equivalent to:
    1.35 +	//    (aDelta >= 0) && (aDelta <= 0xffff)
    1.36 +	// if aDelta were signed
    1.37 +	return !(aDelta & 0xffff0000);
    1.38 +	}
    1.39 +
    1.40 +
    1.41 +inline TUint8* CVJCompressor::GetTCPOpts(ThdrTCP* aTCPHeader) const
    1.42 +/**
    1.43 +Returns a pointer to the start of the TCP options (if there are any).
    1.44 +
    1.45 +@param aTCPHeader TCP header
    1.46 +
    1.47 +@return Start of the TCP options
    1.48 +*/
    1.49 +	{
    1.50 +	TUint8* aPtr = (TUint8*)aTCPHeader+KTCPHeaderSize;
    1.51 +	return aPtr;
    1.52 +	}
    1.53 +
    1.54 +
    1.55 +
    1.56 +#endif // __VJCOMP_INL_