--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsresourceservices/graphicsresourceimplementation/inc/sgdeviceimpl.h	Fri Apr 16 16:21:04 2010 +0300
@@ -0,0 +1,77 @@
+// 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:
+// Graphics Resource - logical device driver internal functionality
+//
+
+#ifndef SGDEVICEIMPL_H
+#define SGDEVICEIMPL_H
+
+#include <kernel/kernel.h>
+#include <sgresource/sgdevice.h>
+
+enum TSgDevicePanicReason
+	{
+	ESgPanicMetaDataSizeTooBig = 1,
+	ESgPanicDataSizeNegative = 2
+	};
+
+void Panic(TSgDevicePanicReason aReason);
+
+class DSgDevice: public DLogicalDevice
+	{
+public:
+	// From DLogicalDevice
+	TInt Install();
+	void GetCaps(TDes8& aDes) const;
+	TInt Create(DLogicalChannelBase*& aChannel);
+	};
+
+class DSgResource;
+
+class DSgChannel: public DLogicalChannelBase
+	{
+public:
+	~DSgChannel();
+	// From DLogicalChannelBase
+	TInt DoCreate(TInt aUnit, const TDesC8* aInfo, const TVersion& aVersion);
+	TInt Request(TInt aFunction, TAny* a1, TAny* a2);
+private:
+	TInt CreateResource(TUint32 aAttribs, const TDesC8& aMetaData, TInt aDataSize, TUint64& aId);
+	TInt OpenResource(TUint64 aId);
+	TInt CloseResource(TUint64 aId);
+	TUint32 ResourceAttributes(TUint64 aId) const;
+	TInt GetResourceMetaData(TUint64 aId, TDes8& aMetaData) const;
+	TAny* ResourceDataAddress(TUint64 aId) const;
+	TInt ResourceDataSize(TUint64 aId) const;
+	TInt GlobalResourceCount() const;
+	TInt LocalGraphicsMemoryUsed() const;
+	TInt GlobalGraphicsMemoryUsed() const;
+private:
+	class TResourceListItem
+		{
+	public:
+		TResourceListItem(DSgResource* aResource, TInt aChunkHandle);
+	public:
+		DSgResource* iResource;
+		TInt iChunkHandle;
+		};
+private:
+	static TInt Compare(const TUint64* aId, const TResourceListItem& aResourceListItem);
+	static TInt Compare(const TResourceListItem& aResourceListItem1, const TResourceListItem& aResourceListItem2);
+private:
+	DMutex* iMutex;
+	RArray<TResourceListItem> iResources;
+	};
+
+#endif // SGDEVICEIMPL_H