Average8x8, Average16x16

Average two blocks.

Syntax

IppStatus ippiAverage8x8_8u_C1IR(Ipp8u* pSrc, int srcStep, Ipp8u* pSrcDst, int srcDstStep);

IppStatus ippiAverage8x8_8u_C1R(const Ipp8u* pSrc1, int src1Step, const Ipp8u* pSrc2, int src2Step, Ipp8u* pDst, int dstStep);

IppStatus ippiAverage16x16_8u_C1IR(Ipp8u* pSrc, int srcStep, Ipp8u* pSrcDst, int srcDstStep);

IppStatus ippiAverage16x16_8u_C1R(const Ipp8u* pSrc1, int src1Step, const Ipp8u* pSrc2, int src2Step, Ipp8u* pDst, int dstStep);

Parameters

pSrc, pSrc1, pSrc2	Pointers to the source blocks.
pDst	Pointer to the destination block.
pSrcDst	Pointer to the source and destination blocks.
srcStep, src1Step, src2Step	Width in bytes through the source planes.
dstStep	Width in bytes through the destination planes.
srcDstStep	Width in bytes through the source and destination planes.

Description

The functions ippiAverage8x8_8u_C1IR, ippiAverage8x8_8u_C1R, ippiAverage16x16_8u_C1IR, and ippiAverage16x16_8u_C1R are declared in the ippvc.h file. These functions average two blocks pixel-by-pixel, as specified by [ISO14496], subclause 7.6.9.4. The functions can be used in the B-frame reconstruction.

These functions are used in the MPEG-4 encoders and decoders included into Intel IPP Samples. See introduction to Motion Compensation.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when at least one input pointer is NULL.