--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imageeditorengine/inc/MJpegLoad.h	Fri Jan 29 13:53:17 2010 +0200
@@ -0,0 +1,94 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "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:
+* Ixonos Plc
+*
+* Description:  
+*
+*/
+
+
+#ifndef __MJPEGLOAD_H__
+#define __MJPEGLOAD_H__
+
+#include <e32base.h>
+#include "TBitmapHandle.h"
+
+
+class TJpegData
+	{
+	public:
+		TSize iSize;
+		TSize iBlockSize;
+		TSize iSizeInBlocks;
+	};
+
+
+
+/// Jpeg scale factor, used by SetScale()
+/// scales are 1:1, 1:2, 1:4 and 1:8
+enum TJpegScale
+	{
+	EScale1 = 0,
+	EScale2 = 1,
+	EScale4 = 2,
+	EScale8 = 3
+	};
+
+
+/// Jpeg loader interface
+class MJpegLoad
+	{
+	public:
+		virtual ~MJpegLoad() {}
+
+		/// Opens jpeg file for decoding
+		/// @param aFile full filename of jpeg
+		virtual void OpenL( const TFileName& aFile ) = 0;
+
+		/// Opens jpeg file for decoding
+		/// @param aData descriptor of jpeg file data
+		virtual void OpenL( const TPtr8& aData ) = 0;
+
+		/// Sets load scale
+		/// @param aScale scale factor to use
+		virtual void SetScale( TJpegScale aScale ) = 0;
+		
+		/// Loads image or partial image
+		/// for normal image load, use Info().iSize
+		/// @param aRect rectangle in pixels to load. 
+		///			Returns real decoded size which is 
+		///			macroblock size dependent
+		/// @return TBitmapHandle loaded image.
+		virtual TBitmapHandle LoadImageL( TRect& aRect ) = 0;
+		
+		/// Scans the jpeg file for random access load
+		/// must be called before LoadBlock()
+		virtual void ScanRandomL() = 0;
+
+		/// Decodes one macroblock from jpeg
+		/// @param aBlock x&y coordinates of macroblock to decode
+		/// @return block bitmap in 32bit RGB ( 0RGB ) format
+		virtual TBitmapHandle LoadBlockL( const TPoint& aBlock ) = 0;
+
+		/// Gives info about jpeg
+		/// Can only be called after OpenL
+		/// return jpeg information struct
+		virtual const TJpegData& Info() = 0;
+		
+		/// Gives Exif data chunk if any
+		virtual TPtrC8 ExifData() = 0;
+
+
+	};
+
+#endif