1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   

    15 *

    16 */

    17 

    18 

    19 

    20 #include "HuiFxScalarParameter.h"

    21 

    22 template<>

    23 TInt32 RHuiFxScalarTimeLine::ToFixedPoint(const TReal32& aValue)

    24     {

    25     return (TInt32)(aValue * 0x10000);

    26     }

    27 

    28 template<>

    29 TReal32 RHuiFxScalarTimeLine::FromFixedPoint(const TInt32& aValue)

    30     {

    31     return aValue / (TReal32)(0x10000);

    32     }

    33 

    34 template<>

    35 TInt32 RHuiFxScalarTimeLine::Blend(const TInt32& aValue1, const TInt32& aValue2, TInt32 aAlpha)

    36     {

    37     TInt64 diff = aValue2 - aValue1;

    38     return (TInt32)((TInt64)aValue1 + ((diff * (aAlpha >> 8)) >> 8));

    39     }

    40 

    41 template<>

    42 TInt32 RHuiFxScalarTimeLine::WeightedSum4(const TInt32& aValue1, const TInt32& aValue2, const TInt32& aValue3, const TInt32& aValue4,

    43                                           TInt32 aWeight1, TInt32 aWeight2, TInt32 aWeight3, TInt32 aWeight4)

    44     {

    45     TInt64 f1 = (TInt64)aValue1 * (TInt64)aWeight1;

    46     TInt64 f2 = (TInt64)aValue2 * (TInt64)aWeight2;

    47     TInt64 f3 = (TInt64)aValue3 * (TInt64)aWeight3;

    48     TInt64 f4 = (TInt64)aValue4 * (TInt64)aWeight4;

    49     return (TInt32)((f1 + f2 + f3 + f4) >> 16);

    50     }