InterpolateQPBicubic

Performs bicubic quarter-pel interpolation.

Syntax

IppStatus ippiInterpolateQPBicubic_VC1_8u_C1R( const IppVCInterpolate_8u* pParams );

Parameters

pParams

Pointer to the structure that contains parameters for interpolation:

pParams->pSrc	Pointer to the source
pParams->srcStep	Distance in bytes between starts of the consecutive lines in the source block
pParams-> pDst	Pointer to the destination
pParams -> dstStep	Distance in bytes between starts of the consecutive lines in the destination block
pParams->dx, Params->dy	Fractional parts of the motion vector in 1/4 pel units (0, 1, 2, or 3)
pParams ->bitDepth	Not used by this function, should be equal to 0
pParams-> roundControl	Frame level rounding control value as described in section 8.3.7 of [ SMPTE 421M ], should be equal to 0 or 1
pParams-> roiSize	Block size, should be 16x16: Progressive frames/ 1-MV Macroblocks/ luma blocks Interlace fields/ 1-MV Macroblocks/ luma blocks Interlace frames/ 1-MV Macroblocks/ luma blocks 16x8: Interlace frames/ 2-MV Macroblocks/ luma blocks 8x8: Progressive frames/ 4-MV Macroblocks/ luma blocks Interlace fields/ 4-MV Macroblocks/ luma blocks Interlace frames/ 4-MV Macroblocks/ luma blocks.

Description

The function ippiInterpolateQPBicubic_VC1_8u_C1R is declared in the ippvc.h file. The function performs bicubic quarter-pel interpolation in accordance with 8.3.6.5.2 of [SMPTE421M].

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition when at least one of the specified pointers is NULL.
ippStsBadArgErr	Indicates an error condition if dx or dy values fall outside [0,3].
ippStsSizeErr	Indicates an error condition in pParams->roiSize.