--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DirectPrint/DirectPrintServer/src/directprintrsimageparser.cpp	Tue May 11 14:10:02 2010 +0800
@@ -0,0 +1,163 @@
+/*
+* 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.
+*
+*/
+
+
+// DirectPrintRsImageParser.cpp: implementation of the CDirectPrintRsImageParser class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#include "directprintrsimageparser.h"
+#include "clog.h"
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+CDirectPrintRsImageParser* CDirectPrintRsImageParser::NewLC()
+	{
+	CDirectPrintRsImageParser* self = new (ELeave) CDirectPrintRsImageParser();
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	return self;
+	}
+
+
+void CDirectPrintRsImageParser::ConstructL()
+	{
+	User::LeaveIfError(iFs.Connect());
+	}
+
+
+CDirectPrintRsImageParser::~CDirectPrintRsImageParser()
+	{
+	iFs.Close();
+	}
+
+CDirectPrintRsImageParser::CDirectPrintRsImageParser()
+	{
+	}
+
+void CDirectPrintRsImageParser::ValidateL( const TDesC& aFileName, TBool& aValid, TInt& aErr )
+	{
+	LOG1("CDirectPrintRsImageParser::ValidateL aFileName: %S", &aFileName);
+	aValid = EFalse;
+	TInt dataPos( 0 );
+	TBuf8<9> imgData;
+	TBool bAllDone( EFalse );
+	TInt height( 0 );
+	TInt width( 0 );
+	TInt startOfDataOffset( 0 );
+	TInt encoding( EUnknown );
+	TInt size( 0 );
+
+	RFile file;
+	aErr = file.Open( iFs, aFileName, EFileRead | EFileShareReadersOnly );
+	LOG1("CDirectPrintRsImageParser::ValidateL file.Open (shareread mode): %d", aErr);
+	if ( aErr != KErrNone )
+		{
+		aErr = file.Open( iFs, aFileName, EFileRead | EFileShareAny );
+		LOG1("CDirectPrintRsImageParser::ValidateL file.Open (shareany mode): %d", aErr);
+		}
+
+	// magic numbers used here are JPEG format related
+	else // if ( aErr == KErrNone ) // 1 IF
+		{
+		CleanupClosePushL( file );
+		aErr = file.Size( size );
+		if( size && aErr == KErrNone ) // 2 IF
+			{
+			aErr = ReadData( file, dataPos, imgData );
+			if( aErr == KErrNone && imgData.Length() == 9 ) // 3 IF
+				{
+				// First check for the JPEG header "FF D8"
+				if( imgData[0] == 0xff && imgData[1] == 0xd8 ) // 4 IF
+					{
+					// Start skipping headers until we find the one we're looking for
+					dataPos = (imgData[4] << 8) + imgData[5] + 4;
+
+					aErr = ReadData( file, dataPos, imgData );
+
+					while( aErr == KErrNone && imgData.Length() == 9 && imgData[0] == 0xff )
+						{
+						switch( imgData[1] )
+							{
+							case 0xda:
+								// Start of data
+								startOfDataOffset = dataPos + ((imgData[2] << 8) + imgData[3] + 2);
+								bAllDone = ETrue;
+								break;
+
+							case EDiffArithLossless:
+								encoding = imgData[1];
+								height = (imgData[5] << 8) + imgData[6];
+								width = (imgData[7] << 8) + imgData[8];
+								break;
+								
+							default:
+								break;
+							} // SWITCH
+
+							if( bAllDone )
+								{
+								break;
+								}
+							else
+								{
+								dataPos += (imgData[2] << 8) + imgData[3] + 2;
+								aErr = ReadData( file, dataPos, imgData );
+								}
+						} // WHILE
+					} // 4 IF
+				else
+					{
+					// Not a JPG
+					aErr = KErrCorrupt;
+					}
+				} // 3 IF
+			} // 2 IF
+			
+		CleanupStack::PopAndDestroy( &file ); 
+		} // 1 IF
+
+	aValid = Validate( startOfDataOffset, width, height, size, encoding, aErr );
+		
+	LOG1("CDirectPrintRsImageParser::ValidateL aValid: %d", aValid);
+	LOG1("CDirectPrintRsImageParser::ValidateL aErr: %d", aErr);
+	LOG("CDirectPrintRsImageParser::ValidateL end");
+	}
+
+TBool CDirectPrintRsImageParser::Validate( TInt aStartOfDataOffset, TInt aWidth, TInt aHeight, TInt aSize, TInt aEncoding, TInt aErr )
+	{
+	if ( aStartOfDataOffset && aWidth && aHeight && aSize && aEncoding && !aErr )
+		{
+		return ETrue;
+		}
+	else 
+		{
+		return EFalse;
+		}
+	}
+
+TInt CDirectPrintRsImageParser::ReadData( RFile& aFile, TInt aStartByte, TDes8& aData )
+	{
+	LOG("CDirectPrintRsImageParser::ReadData begin");
+	TInt err = aFile.Read( aStartByte, aData );
+	LOG1("CDirectPrintRsImageParser::ReadData return: %d", err);
+	return err;	
+	}
+
+//  End of File