--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imaging/imagingfws/BitmapTransform/src/BitmapConverterBody.cpp	Wed Aug 25 12:29:52 2010 +0300
@@ -0,0 +1,220 @@
+// Copyright (c) 2001-2009 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:
+// BitmapConvwerterBody.cpp
+// 
+//
+
+#include "BitmapTransformsBody.h"
+#include "BitmapTransformsMain.h"
+#include <icl/imageprocessor.h>
+#include "ImageProcessorPriv.h"
+
+const TInt KPixelBufferSize = 128;
+const TInt KLinesPerCall = 10;
+
+/*
+*
+* CBody
+*
+*/
+CBitmapConverter::CBody::CBody()
+: CActive(EPriorityLow), iPixelDes(0,0,0)
+	{
+	}
+
+/*
+*
+* RunL
+*
+*/
+void CBitmapConverter::CBody::RunL()
+	{
+	DoConvert();
+	}
+
+/*
+*
+* DoCancel
+*
+*/
+void CBitmapConverter::CBody::DoCancel()
+	{
+	RequestComplete(KErrCancel);
+	}
+
+/*
+*
+* ConstructL
+*
+*/
+void CBitmapConverter::CBody::ConstructL()
+	{
+	CActiveScheduler::Add(this);
+	iImageProc = CErrorDiffuser::NewL();
+	iPixelBuffer = new (ELeave) TRgb[KPixelBufferSize];
+	TInt length = KPixelBufferSize * sizeof(TRgb);
+	TUint8* ptr = reinterpret_cast<TUint8*>(iPixelBuffer);
+	iPixelDes.Set( ptr, length, length );
+	}
+
+/*
+*
+* NewL Creates a CbitmapConverter
+*
+*/
+CBitmapConverter::CBody* CBitmapConverter::CBody::NewL()
+	{
+	CBody* self = new (ELeave) CBody();
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+/*
+*
+* DoConvert Converts KLinesPerCall lines, then either queues a RunL
+* or, if the conversion has been completed, completes the client's message
+*
+*/
+void CBitmapConverter::CBody::DoConvert()
+	{
+	TInt linesLeftThisCall = KLinesPerCall;
+	
+	while ((linesLeftThisCall-- > 0) && (iPos.iY < iSrcSize.iHeight))
+		{
+		iImageProc->SetPos(iPos);
+		for (iPos.iX = 0; iPos.iX < iSrcSize.iWidth; iPos.iX += KPixelBufferSize)
+			{
+			const TInt width = Min(KPixelBufferSize,iSrcSize.iWidth - iPos.iX);
+			iSrcBitmap->GetScanLine(iPixelDes,iPos,width,ERgb);
+			iImageProc->SetPixels(iPixelBuffer,width);
+			}
+		iPos.iY++;
+		}
+	
+	if (iPos.iY == iSrcSize.iHeight)
+		{
+		iImageProc->FlushPixels();
+		RequestComplete(KErrNone);
+		}
+	else
+		{
+		SelfComplete(KErrNone);
+		}
+	}
+
+/*
+*
+* SelfComplete
+* Queues a RunL
+*
+* @param aError
+*
+*/
+void CBitmapConverter::CBody::SelfComplete(TInt aError)
+	{
+	TRequestStatus *status = &iStatus;
+	SetActive();
+	User::RequestComplete(status, aError);
+	}
+
+/*
+*
+* RequestComplete
+* Completes the client's message
+*
+* @param aReason
+*
+*/
+void CBitmapConverter::CBody::RequestComplete(TInt aReason)
+	{
+	ASSERT(iCopyStatus);
+	TRequestStatus* status = iCopyStatus;
+	User::RequestComplete(status, aReason);
+	}
+
+/*
+*
+* ~CBody
+*
+*/
+CBitmapConverter::CBody::~CBody()
+	{
+	Cancel();
+	delete [] iPixelBuffer;
+	delete iImageProc;
+	}
+
+/*
+*
+* Convert 
+* Converts one bitmap to another
+*
+* @param aStatus
+* @param aDstBitmap
+* @param aSrcBitmap
+* @pre aStatus != 0
+* @pre aDstBitmap handle != 0
+* @pre aSrcBitmap handle != 0
+* @pre aDstBitmap size != 0 on any dimension
+* @pre aSrcBitmap size != 0 on any dimension
+* @pre src bitmap size == destination bitmap size
+* Should this method be promoted to a public interface 
+* it is recommended to change some of the assertions
+* used in preconditions to User::Leave with an error code
+*
+*/
+void CBitmapConverter::CBody::Convert(TRequestStatus* aStatus, CFbsBitmap& aDstBitmap,CFbsBitmap& aSrcBitmap)
+	{
+	//[preconditon aStatus != 0]
+	ASSERT( aStatus );
+	//[ precondition bitmaps have been created ]
+	ASSERT( aDstBitmap.Handle() != 0 );
+	ASSERT( aSrcBitmap.Handle() != 0 );
+
+	iCopyStatus = aStatus;
+	*iCopyStatus = KRequestPending;
+	if(aDstBitmap.ExtendedBitmapType()!=KNullUid || aSrcBitmap.ExtendedBitmapType()!=KNullUid)
+        {
+        RequestComplete(KErrNotSupported);
+        return;
+        }
+	
+	TSize srcSize;
+	      srcSize = aSrcBitmap.SizeInPixels();
+	TSize dstSize;
+	      dstSize = aDstBitmap.SizeInPixels();
+	//[ precondition no dimension is zero]
+	ASSERT( srcSize.iWidth != 0 );
+	ASSERT( srcSize.iHeight != 0 );
+	ASSERT( dstSize.iWidth != 0 );
+	ASSERT( dstSize.iHeight != 0 );
+	//[ precondition bitmaps are of the same dimension]
+	ASSERT( dstSize.iWidth == srcSize.iWidth );
+	ASSERT( dstSize.iHeight == srcSize.iHeight );
+	    
+	iSrcBitmap = &aSrcBitmap;
+	iSrcSize = aSrcBitmap.SizeInPixels();
+	iPos.SetXY(0,0);
+	TInt errCode = KErrNone;
+	TRAP( errCode, iImageProc->PrepareL(aDstBitmap,iSrcSize));
+	if( errCode != KErrNone )
+		{
+		RequestComplete(errCode);
+		return;
+		}
+	
+	SelfComplete(KErrNone);
+	}