--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/vedengine/videoprocessor/src/VedRgb2YuvConverter.cpp	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,311 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "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:
+* Ixonos Plc
+*
+* Description:  
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <e32svr.h>
+#include <fbs.h>
+#include "VedRgb2YuvConverter.h"
+
+// EXTERNAL DATA STRUCTURES
+
+// EXTERNAL FUNCTION PROTOTYPES  
+
+// CONSTANTS
+
+// MACROS
+#ifdef _DEBUG
+#	define __IF_DEBUG(t) {RDebug::t;}
+#else
+#	define __IF_DEBUG(t)
+#endif
+
+// LOCAL CONSTANTS AND MACROS
+
+// ?one_line_short_description_of_data
+#define AVG(a,b) ( ( a + b ) >> 1 )
+
+// MODULE DATA STRUCTURES
+
+/**
+*  ?one_line_short_description.
+*  ?other_description_lines
+*
+*  @lib ?library
+*  @since ?Series60_version
+*/
+struct TVSYCrCb
+	{
+	public:
+		// ?one_line_short_description_of_data
+		TInt iY;
+		
+		// ?one_line_short_description_of_data
+		TInt iCb;
+		
+		// ?one_line_short_description_of_data
+		TInt iCr;
+	};
+
+// LOCAL FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// ============================= LOCAL FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+inline TUint8 RGBtoYCbCr( TVSYCrCb* aYuv, const TRgb& aColor )
+	{
+	const TInt YRedFactor = 19595; // 0.299 << 16
+	const TInt YGreenFactor = 38470; // 0.587 << 16
+	const TInt YBlueFactor = 7471; // 0.114 << 16
+	const TInt CbRedFactor = 11056; // 0.1687 << 16
+	const TInt CbGreenFactor = 21712; // 0.3313 << 16
+	const TInt CrGreenFactor = 27440; // 0.4187 << 16
+	const TInt CrBlueFactor = 5328; // 0.0813 << 16
+
+	TInt red = aColor.Red();
+	TInt green = aColor.Green();
+	TInt blue = aColor.Blue();
+
+	aYuv->iY = (YRedFactor * red) + (YGreenFactor * green) + (YBlueFactor * blue);
+	aYuv->iCb = - (CbRedFactor * red) - (CbGreenFactor * green) + (blue << 15);
+	aYuv->iCr = (red << 15) - (CrGreenFactor * green) - (CrBlueFactor * blue);
+
+	aYuv->iY >>= 16;
+	aYuv->iCb >>= 16;
+	aYuv->iCr >>= 16;
+
+	aYuv->iCb += 128;
+	aYuv->iCr += 128;
+
+	return static_cast<TUint8>( aYuv->iY );
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TRgb VSReadColor4K( TAny*& aSource )
+	{
+	TUint16* s = static_cast<TUint16*>( aSource );
+	TRgb rgb( TRgb::Color4K( *s++ ) );
+	aSource = s;
+	return rgb;
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TRgb VSReadColor64K( TAny*& aSource )
+	{
+	TUint16* s = static_cast<TUint16*>( aSource );
+	TRgb rgb( TRgb::Color64K( *s++ ) );
+	aSource = s;
+	return rgb;
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TRgb VSReadColor16M( TAny*& aSource )
+	{
+	TUint8* s = static_cast<TUint8*>( aSource );
+	TRgb rgb( s[2], s[1], s[0] );
+	aSource = s + 3;
+	return rgb;
+	}
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// ============================ CVSFbsBitmapYUV420Converter ===============================
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+CVSFbsBitmapYUV420Converter* CVSFbsBitmapYUV420Converter::NewL( const CFbsBitmap& aBitmap )
+	{
+	CVSFbsBitmapYUV420Converter* self = new (ELeave) CVSFbsBitmapYUV420Converter();
+	CleanupStack::PushL( self );
+	self->ConstructL( aBitmap );
+	CleanupStack::Pop(); // self
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+CVSFbsBitmapYUV420Converter::~CVSFbsBitmapYUV420Converter()
+	{
+	delete iSource;
+	delete iYUVData;
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CVSFbsBitmapYUV420Converter::SetSourceL( const CFbsBitmap& aBitmap )
+	{
+	ReConstructL( aBitmap );
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CVSFbsBitmapYUV420Converter::ProcessL()
+	{
+	switch( iSource->DisplayMode() )
+		{
+		case EColor4K:
+			DoProcess( VSReadColor4K );
+			break;
+
+		case EColor64K:
+			DoProcess( VSReadColor64K );
+			break;
+		
+		case EColor16M:
+			DoProcess( VSReadColor16M );
+			break;
+
+		default:
+			User::Leave( KErrNotSupported );
+			break;
+		};
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TPtrC8 CVSFbsBitmapYUV420Converter::YUVData() const
+	{
+	return *iYUVData;
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CVSFbsBitmapYUV420Converter::ConstructL( const CFbsBitmap& aBitmap )
+	{
+	iSource = new (ELeave) CFbsBitmap();
+	ReConstructL( aBitmap );
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CVSFbsBitmapYUV420Converter::ReConstructL( const CFbsBitmap& aBitmap )
+	{
+	User::LeaveIfError( iSource->Duplicate( aBitmap.Handle() ) );
+	
+	// make sure that destination bitmap's displaymode is supported
+	if( ( iSource->DisplayMode() != EColor4K ) && ( iSource->DisplayMode() != EColor64K ) && ( iSource->DisplayMode() != EColor16M ) )
+		{
+		User::Leave( KErrNotSupported );
+		}
+	
+	if( !iYUVData || !( iSize == iSource->SizeInPixels() ) )
+		{
+		iSize = iSource->SizeInPixels();
+		delete iYUVData; iYUVData = 0;
+		TInt ySize = iSize.iWidth * iSize.iHeight;
+		iYUVData = HBufC8::NewMaxL( ySize + ( ySize >> 1 ) );
+		iY.Set( iYUVData->Des().Mid( 0, ySize ) );
+		iU.Set( iYUVData->Des().Mid( ySize, ySize >> 2 ) );
+		iV.Set( iYUVData->Des().Mid( ySize + ( ySize >> 2 ), ySize >> 2 ) );
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CVSFbsBitmapYUV420Converter::DoProcess( TVSColorReadFunc aReadFunction )
+	{
+	TUint8* pY = const_cast<TUint8*>( iY.Ptr() );
+	TUint8* pU = const_cast<TUint8*>( iU.Ptr() );
+	TUint8* pV = const_cast<TUint8*>( iV.Ptr() );
+	TVSYCrCb yuv1, yuv2;
+
+	iSource->LockHeap();
+	TAny* s = iSource->DataAddress();
+	for( TInt h = 0; h < iSize.iHeight; h++ )
+		{
+		for( TInt w = 0; w < iSize.iWidth>>1; w++ ) // Note! width must be even divisible by 2
+			{
+			*pY++ = RGBtoYCbCr( &yuv1, aReadFunction( s ) ); 
+			*pY++ = RGBtoYCbCr( &yuv2, aReadFunction( s ) ); 
+			if( h&1 )
+				{
+				*pU++ = static_cast<TUint8>( AVG( yuv1.iCb, yuv2.iCb ) );
+				*pV++ = static_cast<TUint8>( AVG( yuv1.iCr, yuv2.iCr ) );
+				}
+			else
+				{
+				*pU++ = static_cast<TUint8>( AVG( *pU, AVG( yuv1.iCb, yuv2.iCb ) ) );
+				*pV++ = static_cast<TUint8>( AVG( *pV, AVG( yuv1.iCr, yuv2.iCr ) ) );
+				}
+			}
+		// if even row -> decrease pU and pV, we will calculate average for those on odd rows
+		if( !(h&1) )
+			{
+			pU -= ( iSize.iWidth >> 1 );
+			pV -= ( iSize.iWidth >> 1 );
+			}
+		}
+	iSource->UnlockHeap();
+	}
+
+//  End of File