diff -r 000000000000 -r 5752a19fdefe imaging/imagingplugins/codecs/PNGCodec/StreamDecoderIFace.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imaging/imagingplugins/codecs/PNGCodec/StreamDecoderIFace.h	Wed Aug 25 12:29:52 2010 +0300
@@ -0,0 +1,56 @@
+// Copyright (c) 2005-2009 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 _STREAM_DECODER_IFACE_H
+
+#define _STREAM_DECODER_IFACE_H
+
+/** 	@file
+	@internalComponent */
+
+class MImageStreamDecoder;
+class MImageStreamDecoderFactory 
+	{
+public:
+	virtual void CreatePngDecoderL(MImageStreamDecoder*& aPtr)=0;
+	virtual void SetDtorKey(TUid aUid)=0;
+	virtual void Release()=0;
+	};
+
+class MUniqueChunkDataProvider;
+class CImageProcessor;
+class CFbsBitmap;
+class MImageStreamDecoder 
+	{
+public:
+
+	virtual void InitL(CImageProcessor& aImageProcessor, CImageProcessor* aMaskProcessor, CFbsBitmap* aDestination, 
+						const TPtrC8& aData, MUniqueChunkDataProvider& aProvider)=0;
+
+	virtual void DecodeL()=0;
+	virtual void ResetL()=0;
+
+	virtual const TSize& ImageSize()=0;
+
+	virtual void Release()=0;
+	};
+
+class MUniqueChunkDataProvider 
+	{
+public:
+   virtual TInt GetChunkData(const TText8* aChunkId, const TUint8*& aPalettePtr, TInt& aSizeInBites)=0;
+	};
+
+#endif // _STREAM_DECODER_IFACE_H