diff -r 000000000000 -r 951a5db380a0 videoeditorengine/audioeditorengine/resampler/src/resampler_sinc_conv_44_to_48_int16.inl --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/videoeditorengine/audioeditorengine/resampler/src/resampler_sinc_conv_44_to_48_int16.inl Fri Jan 29 14:08:33 2010 +0200 @@ -0,0 +1,51 @@ +#ifndef __RESAMPLER_SINC_CONV_44_TO_48_INT16_INL__ +#define __RESAMPLER_SINC_CONV_44_TO_48_INT16_INL__/* +/* +* 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 "resampler_common_defs.h" +#include "resampler_data_types.h" + + +static FORCEINLINE int32 +RESAMPLER_SincConv44To48FilterInt16(const int16 *signalBuf, + const int16 *filterPtr1, + const int16 *filterPtr2, + int length) +{ + int32 newSample(0); + int k = length; + const int16 *bufferPtr1 = signalBuf; + const int16 *bufferPtr2 = signalBuf + 1; + + // Calculate the filter. + // Keep newSample in s1.30 format to reduce rounding errors + for (k = length; k > 0; k -= 4) + { + newSample += (int32)(*filterPtr1++) * (*bufferPtr1--) + (int32)(*filterPtr2++) * (*bufferPtr2++); + newSample += (int32)(*filterPtr1++) * (*bufferPtr1--) + (int32)(*filterPtr2++) * (*bufferPtr2++); + newSample += (int32)(*filterPtr1++) * (*bufferPtr1--) + (int32)(*filterPtr2++) * (*bufferPtr2++); + newSample += (int32)(*filterPtr1++) * (*bufferPtr1--) + (int32)(*filterPtr2++) * (*bufferPtr2++); + } + + return newSample; +} + + +#endif /* __RESAMPLER_SINC_CONV_ONE_TO_TWO_INT16_INL__ */