1 /*

     2 * Copyright (c) 2010 Kanrikogaku Kenkyusho, Ltd.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Kanrikogaku Kenkyusho, Ltd. - Initial contribution

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Contains the CDirectPrintRsImageParser class definition.

    15 *

    16 */

    17 

    18 

    19 #ifndef CDIRECTPRINTRSDIRECTPARSER_H

    20 #define CDIRECTPRINTRSDIRECTPARSER_H

    21 

    22 #include <e32base.h>

    23 #include <f32file.h>

    24 

    25 class CDirectPrintRsImageParser : public CBase

    26 	{

    27 	public:

    28 		enum TImageEncoding

    29 			{

    30 			EUnknown = 0,

    31 			ENonDiffHuffmanBaseline = 0xc0,

    32 			ENonDiffHuffmanExtendedSeq,

    33 			ENonDiffHuffmanProgressive,

    34 			ENonDiffHuffmanLossless,

    35 			EUnused1,

    36 			EDiffHuffmanSequential,

    37 			EDiffHuffmanProgressive,

    38 			EDiffHuffmanLossless,

    39 			EReserved,

    40 			ENonDiffArithExtendedSeq,

    41 			ENonDiffArithProgressive,

    42 			ENonDiffArithLossless,

    43 			EUnused2,

    44 			EDiffArithSequential,

    45 			EDiffArithProgressive,

    46 			EDiffArithLossless

    47 			};

    48 

    49 		/**

    50 		 *	2-phase constructor

    51 		 *

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

    53 		 */

    54 		static CDirectPrintRsImageParser* NewLC();

    55 		

    56 		/**

    57 		 *	Destructor

    58 		 */			

    59 		~CDirectPrintRsImageParser();

    60 		

    61 		/**

    62 		 *	JPEG image validator

    63 		 *

    64 		 *	@param aFileName image file name

    65 		 *	@param aValid place holder for validity indicator

    66 		 *	@param aErr place holder for error code

    67 		 */			

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

    69 								

    70 	private:		

    71 

    72 		CDirectPrintRsImageParser();

    73 		void ConstructL();	

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

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

    76 

    77 	private:

    78 	

    79 		RFs iFs;

    80 	};

    81 

    82 #endif // CDIRECTPRINTRSDIRECTPARSER_H

    83 

    84 //  End of File