// Copyright (c) 2006-2009 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

 @publishedPartner

*/

#include <mtp/mtpdatatypeconstants.h>

#include <mtp/cmtptypeopaquedata.h>

const TInt KMaxSizeOfWriteBuffer = 0x00010000; // 64KB

EXPORT_C CMTPTypeOpaqueData* CMTPTypeOpaqueData::NewL()

    {

    CMTPTypeOpaqueData* self = NewLC();

    CleanupStack::Pop(self);

    return self;

    }

EXPORT_C CMTPTypeOpaqueData* CMTPTypeOpaqueData::NewLC()

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

EXPORT_C CMTPTypeOpaqueData* CMTPTypeOpaqueData::NewL(const TDesC8 &aDes)

    {

    CMTPTypeOpaqueData* self = NewLC(aDes);

    CleanupStack::Pop(self);

    return self;

    }

EXPORT_C CMTPTypeOpaqueData* CMTPTypeOpaqueData::NewLC(const TDesC8 &aDes)

    {

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

    CleanupStack::PushL(self);

    self->ConstructL(aDes);

    return self;

    }

void CMTPTypeOpaqueData::ConstructL()

    {

    }

CMTPTypeOpaqueData::CMTPTypeOpaqueData():

    iPtrBuffer(NULL, 0)

    {

    }

EXPORT_C CMTPTypeOpaqueData::~CMTPTypeOpaqueData()

    {

    iBuffer.Close();

    }

void CMTPTypeOpaqueData::ConstructL(const TDesC8 &aDes)

    {

    iPtrBuffer.Set(const_cast<TUint8*>(aDes.Ptr()), aDes.Length(), aDes.Size());

    }

EXPORT_C TInt CMTPTypeOpaqueData::FirstReadChunk(TPtrC8& aChunk) const

    {

    aChunk.Set(iPtrBuffer);

    return KMTPChunkSequenceCompletion;

    }

EXPORT_C TInt CMTPTypeOpaqueData::NextReadChunk(TPtrC8& aChunk) const

    {

    aChunk.Set(NULL, 0);

    return KErrNotReady;

    }

TInt CMTPTypeOpaqueData::CreateBuffer( const TInt aMaxSize )

    {

    TInt err = iBuffer.Create( aMaxSize );

    if( KErrNone != err)

        return err;

    iPtrBuffer.Set(const_cast<TUint8*>(iBuffer.Ptr()), 0, aMaxSize);

    return KErrNone;

    }

EXPORT_C TInt CMTPTypeOpaqueData::FirstWriteChunk(TPtr8& aChunk)

    {

    if(iPtrBuffer.MaxSize() == 0)

        {

        TInt err =  CreateBuffer( KMaxSizeOfWriteBuffer );

        if( KErrNone != err)

            return err;

        }

    aChunk.Set( const_cast<TUint8*>(iPtrBuffer.Ptr()), 0, iPtrBuffer.MaxSize());

    return KMTPChunkSequenceCompletion;

    }

EXPORT_C TInt CMTPTypeOpaqueData::FirstWriteChunk(TPtr8& aChunk, TUint aDataLength )

    {

    if(KMaxSizeOfWriteBuffer < aDataLength )

        return KErrOverflow;

    TInt size = aDataLength;

    if( aDataLength <= 0 )

        {

        size = KMaxSizeOfWriteBuffer;

        }

    TInt err =  CreateBuffer( size );

    if( KErrNone != err)

        return err;

    return FirstWriteChunk(aChunk);

    }

EXPORT_C TInt CMTPTypeOpaqueData::NextWriteChunk(TPtr8& aChunk)

    {

    aChunk.Set(NULL, 0, 0);

    return KErrNotReady;

    }

EXPORT_C TBool CMTPTypeOpaqueData::CommitRequired() const

    {

    return ETrue;

    }

EXPORT_C MMTPType* CMTPTypeOpaqueData::CommitChunkL(TPtr8& aChunk)

    {

    iPtrBuffer.Set(aChunk);

    return NULL;

    }

EXPORT_C TUint64 CMTPTypeOpaqueData::Size() const

    {

    return iPtrBuffer.Size();

    }

EXPORT_C TUint CMTPTypeOpaqueData::Type() const

    {

    return EMTPTypeOpaqueData;        

    }

EXPORT_C TInt CMTPTypeOpaqueData::Read(TPtrC8 &aDes) const

    {

    aDes.Set( iPtrBuffer );

    return KErrNone;

    }

EXPORT_C TInt CMTPTypeOpaqueData::Write( const TPtrC8 &aDes)

    {

    if(iBuffer.MaxSize() != 0)

        {

        iBuffer.Close();

        }

    iPtrBuffer.Set(const_cast<TUint8*>(aDes.Ptr()), aDes.Length(), aDes.Size());

    return KErrNone;

    }