/*

* Copyright (c) 2010 Kanrikogaku Kenkyusho, Ltd.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* Kanrikogaku Kenkyusho, Ltd. - Initial contribution

*

* Contributors:

*

* Description:  Contains the CDirectPrintRsImageParser class definition.

*

*/

#ifndef CDIRECTPRINTRSDIRECTPARSER_H

#define CDIRECTPRINTRSDIRECTPARSER_H

#include <e32base.h>

#include <f32file.h>

class CDirectPrintRsImageParser : public CBase

	{

	public:

		enum TImageEncoding

			{

			EUnknown = 0,

			ENonDiffHuffmanBaseline = 0xc0,

			ENonDiffHuffmanExtendedSeq,

			ENonDiffHuffmanProgressive,

			ENonDiffHuffmanLossless,

			EUnused1,

			EDiffHuffmanSequential,

			EDiffHuffmanProgressive,

			EDiffHuffmanLossless,

			EReserved,

			ENonDiffArithExtendedSeq,

			ENonDiffArithProgressive,

			ENonDiffArithLossless,

			EUnused2,

			EDiffArithSequential,

			EDiffArithProgressive,

			EDiffArithLossless

			};

		/**

		 *	2-phase constructor

		 *

		 *	@return new object. The object is left on the cleanup stack

		 */

		static CDirectPrintRsImageParser* NewLC();

		/**

		 *	Destructor

		 */			

		~CDirectPrintRsImageParser();

		/**

		 *	JPEG image validator

		 *

		 *	@param aFileName image file name

		 *	@param aValid place holder for validity indicator

		 *	@param aErr place holder for error code

		 */			

		void ValidateL( const TDesC& aFileName, TBool& aValid, TInt& aErr );

	private:		

		CDirectPrintRsImageParser();

		void ConstructL();	

		TBool Validate( TInt aStartOfDataOffset, TInt aWidth, TInt aHeight, TInt aSize, TInt aEncoding, TInt aErr );

		TInt ReadData( RFile& aFile, TInt aStartByte, TDes8& aData );

	private:

		RFs iFs;

	};

#endif // CDIRECTPRINTRSDIRECTPARSER_H

//  End of File