// Copyright (c) 2009 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:

//

/**

 @file

 @internalTechnology

*/

#include <e32base.h> 

#include "cmediasyncdatawriter.h"

CMediaSyncDataWriter* CMediaSyncDataWriter::NewLC(const RChunk& aChunk)

    {

    CMediaSyncDataWriter* self = new(ELeave) CMediaSyncDataWriter();

    CleanupStack::PushL(self);

    self->ConstructL(aChunk);

    return self;

    }

CMediaSyncDataWriter::~CMediaSyncDataWriter()

    {

    }

CMediaSyncDataWriter::CMediaSyncDataWriter()

    {

    }

void CMediaSyncDataWriter::ConstructL(const RChunk& aChunk)

    {

    TUint8* base = aChunk.Base();    

    User::LeaveIfNull(base);

    iHeaderInfo = reinterpret_cast<TDataHeaderInfo*>(base);

    iHeaderInfo->iCount = 0;

    iWriteBase = base + sizeof(TDataHeaderInfo);

    iMaxSize = aChunk.MaxSize() - sizeof(TDataHeaderInfo);    

    iOffset = 0;

    }

TInt CMediaSyncDataWriter::FreeSpaceBytes()

    {

    return (iMaxSize - iOffset);

    }

inline void CMediaSyncDataWriter::CheckBufferCapacityL(TInt aReqSize)

    {

    if (aReqSize > (iMaxSize - iOffset))

        {

        User::Leave(KErrOverflow);

        }

    }

void CMediaSyncDataWriter::AppendEntryL(TUint32 aObjectId, TUint8 aType, const TDesC& aUri)

    {    

    //copy object id       

    CheckBufferCapacityL(sizeof(TUint32));

    Mem::Copy((iWriteBase + iOffset), &aObjectId, sizeof(TUint32));

    iOffset += sizeof(TUint32);

    //copy notification type

    CheckBufferCapacityL(sizeof(TUint8));

    Mem::Copy((iWriteBase + iOffset), &aType, sizeof(TUint8));

    iOffset += sizeof(TUint8);

    //copy uri length

    CheckBufferCapacityL(sizeof(TUint8));

    TUint8 uriLen = aUri.Length();

    Mem::Copy((iWriteBase + iOffset), &uriLen, sizeof(TUint8));

    iOffset += sizeof(TUint8);

    if (uriLen > 0)

        {

        //copy uri content

        CheckBufferCapacityL(aUri.Size());

        TPtr8 ptr(reinterpret_cast<TUint8*>(const_cast<TUint16*>(aUri.Ptr())), aUri.Size(), aUri.Size());

        Mem::Copy((iWriteBase + iOffset), ptr.Ptr(), ptr.Size());

        iOffset += ptr.Size();

        }

    ++iHeaderInfo->iCount;

    }