MC16x4

Performs motion compensation for predicted UV 16X4 block.

Syntax

IppStatus ippiMC16x4_8u_C1(const Ipp8u* pSrcRef, Ipp32s srcStep, const Ipp16s* pSrcYData, Ipp32s srcYDataStep, Ipp8u* pDst, Ipp32s dstStep, Ipp32s mcType, Ipp32s roundControl);

Parameters

pSrcRef	Pointer to the reference intra block.
srcStep	Size of the row in bytes, specifying the aligned reference frame width.
pSrcYData	Pointer to the data obtained after inverse DCT.
srcYDataStep	Number of bytes, specifying the width of the aligned data obtained after inverse DCT.
pDst	Pointer to the destination predicted block.
dstStep	Size of the row in bytes, specifying the aligned destination frame width.
mcType	MC type IPPVC_MC_APX.
roundControl	Parameter that determines type of rounding for half a pel approximation; may be 0 or 1.

Description

This function is declared in the ippvc.h header file. The function ippiMC16x4_8u_C1 calculates a sum of a 16x4 residual UV block and a 16x4 predicted UV block for reconstruction of the source UV block (See Figure Motion Compensation Scheme for Predicted Block). Prediction is calculated on the basis of the reference UV block and mcType (see IPPVC_MC_APX).

Half sample prediction is calculated taking into account structure of UV block . So (horizontally) neighboring elements of U-block (or V-block) have indexes i and i+2 in UV block.

Return Values

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