Revise some of the compositor performance improvements to improve correctness.
Implement pixel blending using a variation of Jim Blinn's no-division blending algorithm.
Move transparency type simplification further up the composition code.
Remove some unnecessary fields.
Output to YUV implementation needs revision as it is actually converting from YUV (copy of source conversion code).
// 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 <bitdev.h>
#include "BITPANIC.H"
/**
Construct calls the constructor for the base class CFbsFont and sets default
value of iCopy as EFalse.
*/
EXPORT_C CFbsBitGcFont::CFbsBitGcFont():
CFbsFont(),
iCopy(EFalse)
{}
/**
Default destructor.
*/
EXPORT_C CFbsBitGcFont::~CFbsBitGcFont()
{}
/**
On return contains iAddress pointer for the CBitmapFont.
@return CBitmapFont* A pointer to the font
@see CFbsFont::Address();
*/
EXPORT_C CBitmapFont* CFbsBitGcFont::Address() const
{
return CFbsFont::Address();
}
/**
Calls reset on the object (sets iHandle to zero and carries out related
messenger housekeeping and then duplicates it using the base class method.
@param TInt aHandle Is the integer handler for the font.
@return TInt KErrNone If successful else a system wide error code.
@see CFbsFont::Duplicate(TInt)
*/
EXPORT_C TInt CFbsBitGcFont::Duplicate(TInt aHandle)
{
Reset();
return CFbsFont::Duplicate(aHandle);
}
/**
Resets the graphics context to its default settings.
The function provides a concrete implementation of the pure virtual
function <code>CGraphicsContext::Reset()</code>. The function
behaviour is the same as documented in that class.
*/
EXPORT_C void CFbsBitGcFont::Reset()
{
if (!iCopy)
CFbsFont::Reset();
else
{
iAddressPointer = NULL;
iHandle = 0;
iServerHandle = 0;
iCopy = EFalse;
}
}
/**
Defines the meaning of the equals operator when acting on a CFbsBitGcFont
object. i.e. allows these objects to be set as being equal to one another.
@param CFbsBitGcFont& aFont the font to be copied
*/
EXPORT_C void CFbsBitGcFont::operator=(const CFbsBitGcFont& aFont)
{
Reset();
iAddressPointer = aFont.iAddressPointer;
iHandle = aFont.iHandle;
iServerHandle = aFont.iServerHandle;
iCopy = ETrue;
}
/**
Gets the bitmap address.
@return The bitmap address.
*/
EXPORT_C CBitwiseBitmap* CFbsBitGcBitmap::Address() const
{
return CFbsBitmap::CleanAddress();
}
/**
Locks the global bitmap heap
*/
EXPORT_C void CFbsBitGcBitmap::LockHeap() const
{
CFbsBitmap::LockHeap();
}
/**
Unlock the global bitmap heap
*/
EXPORT_C void CFbsBitGcBitmap::UnlockHeap() const
{
CFbsBitmap::UnlockHeap();
}