--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/swsrc/pixelutil.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,104 @@
+// Copyright (c) 2007-2009 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 PIXELUTIL_H
+#define PIXELUTIL_H
+
+/**
+@file
+@internalComponent
+*/
+
+#include <e32cmn.h>
+#include <gdi.h>
+#include <pixelformats.h>
+
+/**
+Provides conversion between TDisplayMode/TUidPixelFormat and other pixel format related functionality.
+*/
+NONSHARABLE_STRUCT(PixelFormatUtil)
+	{
+	static TUidPixelFormat ConvertToPixelFormat(TDisplayMode aDisplayMode);
+	static TBool HasAlpha(TUidPixelFormat aPixelFormat);
+	static TInt BitsPerPixel(TUidPixelFormat aPixelFormat);
+	static TDisplayMode ConvertToDisplayMode(TUidPixelFormat aPixelFormat);
+	};
+
+/**
+Provides access to the contents of a pixel buffer. Functionality includes copying pixels into 
+user buffer and perform format conversion or scaling up/down. Copying can be performed 
+horizontally from left to right  or right to left, and vertically from top to bottom or bottom
+to up.
+
+Supported buffer pixel format:
+-EUidPixelFormatRGB_565
+-EUidPixelFormatXRGB_8888
+-EUidPixelFormatARGB_8888
+-EUidPixelFormatARGB_8888_PRE
+
+Supported read pixel format:
+-EUidPixelFormatRGB_565
+-EUidPixelFormatXRGB_8888
+-EUidPixelFormatARGB_8888
+-EUidPixelFormatARGB_8888_PRE
+*/
+NONSHARABLE_CLASS(TPixelBufferReader)
+	{
+public:
+	enum TReadDirection
+		{
+		EReadHorizontal,
+		EReadHorizontalReverse,
+		EReadVertical,
+		EReadVerticalReverse
+		};
+
+	TPixelBufferReader(const TUint32* aPixelBuffer, const TSize& aSize, TInt aStride,TUidPixelFormat aFormat);
+
+	void GetScanLine(TDes8& aReadBuf, const TPoint& aReadPos, TInt aReadLen,
+			TUidPixelFormat aReadFormat, TReadDirection aReadDir) const;
+	void GetScaledScanLine(TDes8& aReadBuf, const TPoint& aReadPos, TInt aClipDestPos,
+			TInt aClipDestLen, TInt aDestLen, TInt aSrcLen, TUidPixelFormat aReadFormat,
+			TReadDirection aReadDir) const;
+
+	const TUint32* GetPixelAddr(const TPoint& aPos) const;
+
+private:
+	TPixelBufferReader(); //declare but not defined
+	const TUint32* GetScanLineAddr(TInt aRow) const;
+
+	void GetScanLineRGB_565(TDes8& aReadBuf, const TPoint& aReadPos, TInt aReadLen, TReadDirection aReadDir) const;
+	void GetScanLineXRGB_8888(TDes8& aReadBuf, const TPoint& aReadPos, TInt aReadLen, TReadDirection aReadDir) const;
+	void GetScanLineARGB_8888(TDes8& aReadBuf, const TPoint& aReadPos, TInt aReadLen, TReadDirection aReadDir) const;
+	void GetScanLineARGB_8888_PRE(TDes8& aReadBuf, const TPoint& aReadPos, TInt aReadLen, TReadDirection aReadDir) const;
+
+	void CopyFromRGB_565(TUint32* aDestPtr, const TUint16* aSrcPtr, TInt aLen, TInt aAdvance) const;
+	TInt GetAdvance(TReadDirection aReadDir) const;
+
+	void GetScaledScanLineH(TDes8& aReadBuf, const TPoint& aReadPos, TInt aClipDestPos,
+			TInt aClipDestLen, TInt aDestLen, TInt aSrcLen, TUidPixelFormat aReadFormat,
+			TReadDirection aReadDir) const;
+	void GetScaledScanLineV(TDes8& aReadBuf, const TPoint& aReadPos, TInt aClipDestPos,
+			TInt aClipDestLen, TInt aDestLen, TInt aSrcLen, TUidPixelFormat aReadFormat,
+			TReadDirection aReadDir) const;
+
+private:
+	const TUint32* iBuffer;
+	TSize iSize;
+	TInt iStride;
+	TUidPixelFormat iFormat;
+	};
+
+#endif /*PIXELUTIL_H*/