1 #ifndef __RESAMPLER_SINC_CONV_ONE_TO_THREE_INT16_INL__

     2 #define __RESAMPLER_SINC_CONV_ONE_TO_THREE_INT16_INL__

     3 /*

     4 * Copyright (c) 2010 Ixonos Plc.

     5 * All rights reserved.

     6 * This component and the accompanying materials are made available

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

     8 * which accompanies this distribution, and is available

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

    10 *

    11 * Initial Contributors:

    12 * Nokia Corporation - Initial contribution

    13 *

    14 * Contributors:

    15 * Ixonos Plc

    16 *

    17 * Description:

    18 *

    19 */

    20 

    21 

    22 #include "resampler_common_defs.h"

    23 #include "resampler_data_types.h"

    24 

    25 static FORCEINLINE int32 

    26 RESAMPLER_SincConvOneToThreeFilterInt16(const int16 *signalBuf, 

    27                                   const int16 *filterPtr1,

    28                                   const int16 *filterPtr2,

    29                                   int length)

    30 {

    31     int32 newSample = 0;

    32     const int16 *bufferPtr1 = signalBuf;

    33     const int16 *bufferPtr2 = signalBuf - 1;

    34 

    35     (void)length;

    36     for (int l = length; l > 0; l-=4)

    37     {

    38         newSample += (int32)(*filterPtr1++) * (*bufferPtr1++) + (int32)(*filterPtr2++) * (*bufferPtr2--);

    39         newSample += (int32)(*filterPtr1++) * (*bufferPtr1++) + (int32)(*filterPtr2++) * (*bufferPtr2--);

    40         newSample += (int32)(*filterPtr1++) * (*bufferPtr1++) + (int32)(*filterPtr2++) * (*bufferPtr2--);

    41         newSample += (int32)(*filterPtr1++) * (*bufferPtr1++) + (int32)(*filterPtr2++) * (*bufferPtr2--);

    42     }

    43 

    44     return newSample;

    45 }

    46 

    47 

    48 #endif /* __RESAMPLER_SINC_CONV_ONE_TO_THREE_INT16_INL__ */