--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmplugins/imagingplugins/codecs/PNGCodec/PNGConvert.h	Wed Sep 01 12:38:50 2010 +0100
@@ -0,0 +1,89 @@
+// Copyright (c) 1999-2009 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 __PNGCONVERT_H__
+#define __PNGCONVERT_H__
+
+#include <icl/imageplugin.h>
+#include "PNGCodec.h"
+
+/** @file
+	@internalComponent */
+
+class MPngDecoder 
+	{
+public:
+	virtual void GoToProcessDataState()=0;
+	};
+
+// Decoder.
+class CPngReadCodec;
+class CPngDecoder : public CImageDecoderPlugin, public MPngDecoder
+	{
+public:
+	enum TDecodeState
+		{
+		EStateStart,
+		EStateNormalProcess,
+		EStateDataProcess
+		};
+public:
+	CPngDecoder();
+
+ 	static CPngDecoder* NewL();
+	virtual ~CPngDecoder();
+
+	virtual void ImageType(TInt aFrameNumber, TUid& aImageType, TUid& aImageSubType) const;
+	CFrameInfoStrings* FrameInfoStringsL(RFs& aFs, TInt aFrameNumber);
+
+	void GoToProcessDataState();
+
+private:
+	// From CImageDecoderPlugin
+	void ReadFormatL();
+	void ScanDataL();
+	void DoConvert();
+	void InitConvertL();
+	void NotifyComplete();
+
+	TDecodeState iState;
+	};
+
+// CPngEncoder
+class CPngEncoder : public CImageEncoderPlugin
+	{
+private:
+	enum TEncodeState
+		{
+		EStateNormalProcess,
+		EStateDataProcess
+		};
+public:
+	static CPngEncoder* NewL();
+	virtual ~CPngEncoder();
+	void GoToProcessDataState();
+protected:
+	// from CImageEncoderPlugin
+	void PrepareEncoderL(const CFrameImageData* aFrameImageData);
+	void DoConvert();
+	void UpdateHeaderL();
+	void InitConvertL();
+	void NotifyComplete();
+private:
+	CPngEncoder();
+private:
+	TEncodeState iState;
+	};
+#endif // __PNGCONVERT_H__