--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/helix_ren/helix_stub/ThumbnailAPI/inc/hxtnutil.h	Mon Jan 18 20:31:16 2010 +0200
@@ -0,0 +1,110 @@
+/*
+* 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_TE_UTIL_H_
+#define _SYMBIAN_TE_UTIL_H_
+
+// Symbian includes
+#include <f32file.h> // RFile 
+
+#include "hxmetadatakeys.h"
+#include "hxtnutil_obs.h"
+
+
+
+
+// CHXThumbnailUtility is the entry point for TE engine.
+// It enables access to Helix Thumbnail engine for reading
+// the decoded YUV frames for a given file.
+
+class CHXThumbnailUtility : public CBase         
+{
+public:
+    ~CHXThumbnailUtility();
+    
+     /**
+     * Constructs a new CHXThumbnailUtility object. This method
+     * may leave if no resources are available to construct 
+     * a new object.    
+     * 
+     * Possible leave codes:
+     *  - <code>KErrNoMemory</code> if memory allocation fails
+     *     
+     * @param aObserver  observer to notify when info is ready for reading
+     *
+     * @return  pointer to a new CHXThumbnailUtility instance
+     */
+
+    static CHXThumbnailUtility* NewL(MHXThumbnailUtilityImplObserver& aObserver);
+                                                                  
+    /**
+     * OpenFileL reads data from aFileHandle to get information
+     * about the specified video clip file.
+     * Possible leave codes:
+     *  - <code>KErrNoMemory</code> if memory allocation fails
+     *  - <code>KErrNotSupported</code> if can't support this clip for thumbnail.   
+     *  - <code>KErrNotFound</code> if can't find a good thumbnail.   
+     *
+     * @param aFileHandle  File handle of file to get the thumbnail.
+     * @param uStartPositingMS  Starting position in clip time from which to 
+                                read the thumbnail.     
+     */
+
+    void    OpenFileL(const RFile& aFileHandle, TUint uStartPositingMS = 0);
+
+    
+    /**
+     * Cancels frame generation. If no frame is currently being 
+     * generated, the function does nothing. Can be called multiple times
+     * without any side effects.
+     */
+    
+    void CancelThumb();
+    
+
+    /** returns the count of metadata entries.
+      * @param aCount  Number of metadata entries returned.
+      * @return  System wide error code if there is any error.
+     */
+    
+    TInt GetMetaDataCount(TUint &aCount);
+
+    /** returns the metadata entry at the given index
+      * @param aIndex  aIndex of the metadata entry.
+      * @param id returned id or key of the metadata entry.
+      * @param pDes returned value of the metadata entry. It is not 
+                    owned by the caller.
+      * @return  System wide error code if there is any error.             
+     */
+        
+    TInt GetMetaDataAt(TUint aIndex, 
+            HXMetaDataKeys::EHXMetaDataId &id, HBufC*& pDes);
+
+protected:
+    CHXThumbnailUtility();
+
+private:
+    void    ConstructL(MHXThumbnailUtilityImplObserver& aObserver);    
+    
+         
+};
+
+
+#endif _SYMBIAN_TE_UTIL_H_
+