sl@0: // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Graphics Resource - kernel resource implementation
sl@0: //
sl@0: 
sl@0: #include <kernel/kern_priv.h>
sl@0: #include "sgextensionimpl.h"
sl@0: 
sl@0: DSgResourceImpl::DSgResourceImpl(DSgExtensionImpl& aExtensionImpl, TUint64 aId, TUint32 aAttribs,
sl@0: 	                             const TDesC8& aMetaData, DChunk* aDataChunk, TInt aDataSize)
sl@0: 	: iExtensionImpl(aExtensionImpl), iRefCount(1), iId(aId), iAttributes(aAttribs),
sl@0: 	  iMetaDataSize(aMetaData.Size()), iDataChunk(aDataChunk), iDataSize(aDataSize)
sl@0: 	{
sl@0: 	memcpy(this + 1, aMetaData.Ptr(), aMetaData.Size());
sl@0: 	}
sl@0: 
sl@0: DSgResourceImpl::~DSgResourceImpl()
sl@0: 	{
sl@0: 	if (iDataChunk)
sl@0: 		{
sl@0: 		Kern::ChunkClose(iDataChunk);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TInt DSgResourceImpl::Open()
sl@0: 	{
sl@0: 	return NKern::SafeInc(iRefCount) > 0 ? KErrNone : KErrNotFound;
sl@0: 	}
sl@0: 
sl@0: void DSgResourceImpl::Close()
sl@0: 	{
sl@0: 	if (NKern::SafeDec(iRefCount) == 1)
sl@0: 		{
sl@0: 		iExtensionImpl.DeleteResource(this);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TUint64 DSgResourceImpl::Id() const
sl@0: 	{
sl@0: 	return iId;
sl@0: 	}
sl@0: 
sl@0: TUint32 DSgResourceImpl::Attributes() const
sl@0: 	{
sl@0: 	return iAttributes;
sl@0: 	}
sl@0: 
sl@0: TInt DSgResourceImpl::GetMetaData(TDes8& aMetaData) const
sl@0: 	{
sl@0: 	if (aMetaData.MaxSize() < iMetaDataSize)
sl@0: 		{
sl@0: 		return KErrOverflow;
sl@0: 		}
sl@0: 	if (iMetaDataSize == 0)
sl@0: 		{
sl@0: 		aMetaData.Zero();
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		aMetaData.Copy(TPtrC8(reinterpret_cast<const TUint8*>(this + 1), iMetaDataSize));
sl@0: 		}
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: DChunk* DSgResourceImpl::DataChunk() const
sl@0: 	{
sl@0: 	return iDataChunk;
sl@0: 	}
sl@0: 
sl@0: TInt DSgResourceImpl::DataSize() const
sl@0: 	{
sl@0: 	return iDataSize;
sl@0: 	}