linklayerprotocols/pppnif/SVJCOMP/VJ.CPP
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201027_01
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <networking/vj.h>
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// Force export of non-mangled name
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extern "C"
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    {
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EXPORT_C CVJCompFactory* NewVJCompFactoryL(void)
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	{
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	return new (ELeave) CVJFactory;
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	}
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	}
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//
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// CVJFactory definitions
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//
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CVJFactory::CVJFactory()
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	{}
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void CVJFactory::InstallL()
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	{}
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CVJCompressorIf* CVJFactory::NewVJCompressorL( TInt aSlots, TInt aCompressConnId)
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/**
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Create and construct a new CVJCompressor object.
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@param aSlots Maximum number of VJ connections
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@param aCompressConnId Whether to compress the connection number 
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@return New CVJCompressor object
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*/
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	{
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	CVJCompressor* Comp = new (ELeave) CVJCompressor();
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	CleanupStack::PushL(TCleanupItem(CNifFactory::Cleanup, Comp));
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	Comp->ConstructL(this, aSlots, aCompressConnId);
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	CleanupStack::Pop();
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	return Comp;
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	}
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CVJDeCompressorIf* CVJFactory::NewVJDeCompressorL( TInt aSlots )
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/**
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Create and construct a new CVJDeCompressor object.
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@param aSlots Value of the highest VJ connection number to be received
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@return New CVJDeCompressor object
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*/
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	{
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	CVJDeCompressor* DeComp = new (ELeave) CVJDeCompressor();
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	CleanupStack::PushL(TCleanupItem(CNifFactory::Cleanup, DeComp));
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	DeComp->ConstructL(this, aSlots);
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	CleanupStack::Pop();
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	return DeComp;
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	}
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//
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// TVJCompHdr definitions
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//
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TVJCompHdr::TVJCompHdr()
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	:
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	iNextPtr(NULL), iConnectionId(0)
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	{
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	    // Ignore lint "not initialized" warning about iIPHeader and iTCPHeader
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	}
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void TVJCompHdr::StoreTCPIPHeader(ThdrIP* aHeader)
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/**
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Stores the TCP/IP header.
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@param aHeader TCP/IP packet header
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*/
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	{
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	iIPHeader = *aHeader;
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	iTCPHeader = *(ThdrTCP::NetPtr(aHeader));
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	iTCPHeader.NetSetChecksum(0);
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	MarkValid();
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	}
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void TVJCompHdr::RetrieveTCPIPHeader(ThdrIP* aIPHeader, ThdrTCP* aTCPHeader)
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/**
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Retrieves the TCP/IP header.
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@param aIPHeader Returns the IP packet header
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@param aTCPHeader Returns the TCP packet header
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*/
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	{
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	*aIPHeader = iIPHeader;
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	*aTCPHeader = iTCPHeader;
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	}