--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/helix_ren/helix_stub/ThumbnailAPI/inc/hxmetadatautil.h	Mon Jan 18 20:31:16 2010 +0200
@@ -0,0 +1,84 @@
+/*
+* 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: 
+*
+*/
+
+
+
+#ifndef _SYMBIAN_METADATA_UTIL_IMP_H_
+#define _SYMBIAN_METADATA_UTIL_IMP_H_
+
+// Symbian includes
+#include <f32file.h> // RFile 
+
+#include "hxmetadatakeys.h"
+
+
+
+
+// CHXMetaDataUtility is the entry point for metadata engine.
+// This hides all the implmentation details of the actual metadata engine
+// including Helix specfic details like GlobalManager, Location of the dlls etc.
+
+class CHXMetaDataUtility : public CBase
+{
+public:
+         ~CHXMetaDataUtility();
+        static CHXMetaDataUtility* NewL();
+
+        // Opens the file aFileName for metadata reading.
+        // descriptor aFileName can be deleted after the OpenFileL returns.
+         void OpenFileL( const TDesC& aFileName );
+
+        // Opens the descriptor for metadata reading.
+        // descriptor is required to be present till ResetL is being called.
+         void OpenDesL(const TDesC8& aDes);
+
+        // Opens the descriptor for metadata reading.
+        // File Handle can be closed after the OpenFileL returns.
+         void OpenFileL(RFile& aFile);
+
+        // Resets the utility. Must be called before OpenFileL() or 
+        // OpenDesL() can be called again.
+        // 
+         void ResetL();
+
+        // returns the count of metadata entries.
+         TInt GetMetaDataCount(TUint &aCount);
+
+        // returns the Metadata entry at index a Index. 
+        // pDes is not owned by the caller.
+         TInt GetMetaDataAt(TUint aIndex, 
+                    HXMetaDataKeys::EHXMetaDataId &id, HBufC*& pDes);
+
+private:
+        CHXMetaDataUtility();
+        CHXMetaDataUtility* ConstructL();
+
+        // utility functions
+        void* GetSymbol(RLibrary &rlib, const char *symbolName);
+        void  ConvertMetaDataL();
+
+private:
+        typedef int (*GetSym2Ord)(const char* pSymbolName);   
+        RLibrary                    m_rlib;
+        
+        TBool                       m_bLibLoaded;
+        TBool                       m_bCloseNeeded;
+
+};
+
+#endif _SYMBIAN_METADATA_UTIL_IMP_H_
+