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// Copyright (c) 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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// Graphics Resource - kernel resource implementation
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//
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#include <kernel/kern_priv.h>
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#include "sgextensionimpl.h"
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DSgResourceImpl::DSgResourceImpl(DSgExtensionImpl& aExtensionImpl, TUint64 aId, TUint32 aAttribs,
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const TDesC8& aMetaData, DChunk* aDataChunk, TInt aDataSize)
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: iExtensionImpl(aExtensionImpl), iRefCount(1), iId(aId), iAttributes(aAttribs),
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iMetaDataSize(aMetaData.Size()), iDataChunk(aDataChunk), iDataSize(aDataSize)
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{
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memcpy(this + 1, aMetaData.Ptr(), aMetaData.Size());
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}
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DSgResourceImpl::~DSgResourceImpl()
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{
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if (iDataChunk)
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{
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Kern::ChunkClose(iDataChunk);
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}
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}
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TInt DSgResourceImpl::Open()
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{
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return NKern::SafeInc(iRefCount) > 0 ? KErrNone : KErrNotFound;
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}
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void DSgResourceImpl::Close()
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{
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if (NKern::SafeDec(iRefCount) == 1)
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{
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iExtensionImpl.DeleteResource(this);
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}
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}
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TUint64 DSgResourceImpl::Id() const
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{
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return iId;
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}
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TUint32 DSgResourceImpl::Attributes() const
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{
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return iAttributes;
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}
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TInt DSgResourceImpl::GetMetaData(TDes8& aMetaData) const
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{
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if (aMetaData.MaxSize() < iMetaDataSize)
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{
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return KErrOverflow;
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}
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if (iMetaDataSize == 0)
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{
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aMetaData.Zero();
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}
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else
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{
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aMetaData.Copy(TPtrC8(reinterpret_cast<const TUint8*>(this + 1), iMetaDataSize));
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}
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return KErrNone;
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}
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DChunk* DSgResourceImpl::DataChunk() const
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{
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return iDataChunk;
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}
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TInt DSgResourceImpl::DataSize() const
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{
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return iDataSize;
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}
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