SampleDownRowH2V2_Box

Performs 2:1 horizontal sampling and 2:1 vertical sampling of an image row.

Syntax

IppStatus ippiSampleDownRowH2V2_Box_JPEG_8u_C1(const Ipp8u* pSrc1, const Ipp8u* pSrc2, int srcWidth, Ipp8u* pDst);

Parameters

pSrc1	Pointer to the source image row.
pSrc2	Pointer to the subsequent source image row.
pDst	Pointer to the destination image row.
srcWidth	Width of the source row in pixels.

Description

The function ippiSampleDownRowH2V2_Box_JPEG is declared in the ippj.h file. This function performs 2:1 horizontal sampling and 2:1 vertical sampling of an image row. Downsampling is performed as a simple “box” filter.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if one or all of the specified pointers are NULL.
ippStsSizeErr	Indicates an error condition if srcWidth has a zero or negative value.