--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imaging/imagingfws/src/ImagePrivSupport.h	Wed Aug 25 12:29:52 2010 +0300
@@ -0,0 +1,78 @@
+// Copyright (c) 2002-2009 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:
+// Not for public use
+// Provides information to the main ICL body classes about their environment, plus some env sensitive ops
+// 
+//
+
+#ifndef __ImagePrivSupport_h
+#define __ImagePrivSupport_h
+
+#include <e32base.h>
+
+// provide info to the decoder about its interface
+class MImageDecoderPrivSupport
+	{
+public:
+	/*
+	 * Must use local buffer, even when decoding from descriptor
+	 */
+	virtual TBool MustUseBufferWithDescriptor() const=0;
+	/*
+	 * Copy from descriptor to indicated buffer
+	 */
+	virtual void CopyBufferToDescriptor(TDes8& aBuffer, const TDesC8& aSource, TInt aPosition, TInt aSize)=0;
+	/**
+	 *  Indicate if running in a separate thread
+	 */
+	virtual TBool AmInThread() const=0;
+	/**
+	 *  Indicate if a decode should abort early (ie. following a Cancel). Always false unless in a thread.
+	 */
+	virtual TBool ShouldAbort() const=0;
+	/**
+	 * Mutual exclusion lock - use on the frame tables to avoid update problems with threaded decode
+	 * For non-threaded implementation will be a no-op.
+	 */
+	virtual void Lock()=0;
+	/**
+	 * Mutual exclusion unlock - opposit of Lock()
+	 * For non-threaded implementation will be a no-op.
+	 */
+	virtual void Unlock()=0;
+	/**
+	 * Save the framecount - should be called whenever the framecount is successfully incremented
+	 * Optionally used to avoid checking the framecount directly during threading. This call should
+	 * only be made when we having finished setting up the frame's details.
+	 * For non-threaded implementation will be a no-op.
+	 */
+	virtual void SaveFrameCount(TInt aFrameCount)=0;
+	};
+
+// provide info to the decoder about its interface
+class MImageEncoderPrivSupport
+	{
+public:
+	/**
+	 *  Indicate if running in a separate thread
+	 */
+	virtual TBool AmInThread() const=0;
+	/**
+	 *  Indicate if a decode should abort early (ie. following a Cancel). Always false unless in a thread.
+	 */
+	virtual TBool ShouldAbort() const=0;
+	};
+
+#endif  // __ImagePrivSupport_h
+