--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmplugins/imagingplugins/codecs/JPEGCodec/JPGSAMP.CPP	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,169 @@
+// Copyright (c) 1997-2009 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:
+//
+
+#include <e32base.h>
+
+#include "JpegTypes.h"
+
+void TDataUnitProcessor::SetBufferPtrUtil(CRgbBufferPtr& aBufferPtrUtil)
+    {
+    iBufferPtrUtil = &aBufferPtrUtil;
+    }
+    
+    
+// TMonoProcessor
+FORCEDINLINE TInt16 MonoPixel(CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+    {
+    return TInt16(
+        			  (
+        			  	(CRgbBufferPtr::Red(aRgbBuffer)<<1) + 
+        			    CRgbBufferPtr::Green(aRgbBuffer) +
+        			    (CRgbBufferPtr::Green(aRgbBuffer)<<2) + 
+        			    CRgbBufferPtr::Blue(aRgbBuffer)
+        			   )>>3
+        	    );
+    }
+    
+TDataUnit* TMonoProcessor::Process(CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+	{
+	TInt16* YPtr = iMCU.iCoeff;
+	const TInt16* YPtrLimit = YPtr + KJpgDCTBlockSize;
+	const TInt KLineStride = iBufferPtrUtil->NextLineOffset();
+    
+	do
+		{
+		TInt p=0;
+		do 
+		    {		
+		    *YPtr++ = MonoPixel( CRgbBufferPtr::ShiftPtr(aRgbBuffer, p++) );
+		    *YPtr++ = MonoPixel( CRgbBufferPtr::ShiftPtr(aRgbBuffer, p++) );
+		    
+		    } while (p < KJpgDCTBlockWidth);
+		aRgbBuffer += KLineStride;
+		
+		} while (YPtr < YPtrLimit);
+
+	return &iMCU;
+	}
+
+// T444Processor
+TDataUnit* T444Processor::Process(CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+	{
+	TInt16* YPtr  = iMCU[0].iCoeff;
+	TInt16* CbPtr = iMCU[1].iCoeff;
+	TInt16* CrPtr = iMCU[2].iCoeff;
+	
+	const TInt16* YPtrLimit = YPtr + KJpgDCTBlockSize;
+	const TInt KLineStride = iBufferPtrUtil->NextLineOffset();
+	
+	do
+		{
+		TInt p=0;
+		do 
+		    {
+    		TYCbCr::RGBtoYCbCr(YPtr++, CbPtr++, CrPtr++, CRgbBufferPtr::ShiftPtr(aRgbBuffer, p++) );
+		    } while (p < KJpgDCTBlockWidth);
+		    
+		aRgbBuffer += KLineStride;
+
+		} while (YPtr < YPtrLimit);
+
+	return iMCU;
+	}
+
+
+// T422Processor
+TDataUnit* T422Processor::Process(CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+	{
+	TInt16* CbPtr = iMCU[2].iCoeff;
+	ASSERT( CbPtr + KJpgDCTBlockSize == iMCU[3].iCoeff); // we assume that V comp is next to U one
+
+	const TInt halfWidth = KJpgDCTBlockWidth >> 1;
+
+	DoProcess(iMCU[0].iCoeff,CbPtr, aRgbBuffer);
+	DoProcess(iMCU[1].iCoeff,CbPtr + halfWidth, CRgbBufferPtr::ShiftPtr(aRgbBuffer,KJpgDCTBlockWidth) );
+
+	return iMCU;
+	}
+
+void T422Processor::DoProcess(TInt16* aYPtr,TInt16* aCbPtr, CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+	{
+	const TInt KLineStride = iBufferPtrUtil->NextLineOffset();
+	const TInt16* YPtrLimit = aYPtr + KJpgDCTBlockSize;
+
+	do
+		{
+		TYCbCr::RGBtoYCbCr2PixUVSum(aYPtr,aCbPtr, aRgbBuffer);
+
+		TYCbCr::RGBtoYCbCr2PixUVSum(aYPtr+2,aCbPtr+1, CRgbBufferPtr::ShiftPtr(aRgbBuffer,2));
+		
+		TYCbCr::RGBtoYCbCr2PixUVSum(aYPtr+4,aCbPtr+2,CRgbBufferPtr::ShiftPtr(aRgbBuffer,4));
+
+		TYCbCr::RGBtoYCbCr2PixUVSum(aYPtr+6,aCbPtr+3,CRgbBufferPtr::ShiftPtr(aRgbBuffer,6));
+
+		aYPtr  += KJpgDCTBlockWidth;
+		aCbPtr += KJpgDCTBlockWidth;
+		aRgbBuffer += KLineStride;
+
+		} while (aYPtr < YPtrLimit);
+	}
+
+
+// T420Processor
+TDataUnit* T420Processor::Process(CRgbBufferPtr::TConstRgbBufferPtr aRgbBuffer)
+	{
+	TInt16* CbPtr = iMCU[4].iCoeff;
+	ASSERT( CbPtr + KJpgDCTBlockSize == iMCU[5].iCoeff); // we assume that V comp is next to U one
+	
+	const TInt halfWidth = KJpgDCTBlockWidth >> 1;
+	const TInt halfSize = KJpgDCTBlockSize >> 1;
+
+	DoProcess(iMCU[0].iCoeff,CbPtr, aRgbBuffer);
+	DoProcess(iMCU[1].iCoeff,CbPtr + halfWidth, CRgbBufferPtr::ShiftPtr(aRgbBuffer, KJpgDCTBlockWidth));
+
+	aRgbBuffer += (iBufferPtrUtil->NextLineOffset() << 3);
+	
+	CbPtr += halfSize;
+
+	DoProcess(iMCU[2].iCoeff,CbPtr, aRgbBuffer);
+	DoProcess(iMCU[3].iCoeff,CbPtr + halfWidth, CRgbBufferPtr::ShiftPtr(aRgbBuffer, KJpgDCTBlockWidth));
+
+	return iMCU;
+	}
+
+void T420Processor::DoProcess(TInt16* aYPtr,TInt16* aCbPtr, CRgbBufferPtr::TConstRgbBufferPtr  aRgbBuffer)
+	{
+	const TInt16* YPtrLimit = aYPtr + KJpgDCTBlockSize;
+	const TInt KLineStride = iBufferPtrUtil->NextLineOffset();
+	const TInt KDoubleLineStride = KLineStride << 1;
+	
+	do
+		{
+		TYCbCr::RGBtoYCbCr4PixUVSum(aYPtr, aCbPtr, aRgbBuffer, KLineStride);
+
+		TYCbCr::RGBtoYCbCr4PixUVSum(aYPtr+2, aCbPtr+1, CRgbBufferPtr::ShiftPtr(aRgbBuffer,2), KLineStride);
+
+        TYCbCr::RGBtoYCbCr4PixUVSum(aYPtr+4, aCbPtr+2, CRgbBufferPtr::ShiftPtr(aRgbBuffer,4), KLineStride);
+        
+        TYCbCr::RGBtoYCbCr4PixUVSum(aYPtr+6, aCbPtr+3, CRgbBufferPtr::ShiftPtr(aRgbBuffer,6), KLineStride);
+
+		aRgbBuffer 	+= KDoubleLineStride;
+		aCbPtr 		+= KJpgDCTBlockWidth;
+		aYPtr 		+= KJpgDCTBlockWidth << 1;
+		
+		} while (aYPtr < YPtrLimit);
+	}
+
+