CbYCr422ToYCrCb420

Converts 4:2:2 CbYCr image to 4:2:0 YCrCb image.

Syntax

IppStatus ippiCbYCr422ToYCrCb420_8u_C2P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);

Parameters

pSrc	Pointer to the source image ROI.
srcStep	Distance in bytes between starts of consecutive lines in the source image.
pDst	Array of pointers to the ROI in each plane of the destination image.
dstStep	Array of distances in bytes between starts of consecutive lines in the destination image planes.
roiSize	Size of the source and destination ROI in pixels, height and width should be multiple of 2.

Description

The function ippiCbYCr422ToYCrCb420 is declared in the ippcc.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function converts the 4:2:2 CbYCr two-channel image pSrc to the 4:2:0 YCrCb three-plane image pDst. The source image has the following sequence of samples: Cb0, Y0, Cr0, Y1, Cb1, Y2, Cr1, Y3, Cb2, ... . The destination image has the following order of pointers: Y-plane, Cr-plane, Cb-plane (see Table “Pixel-Order Image Formats” and Table “Planar Image Formats”).

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error.
ippStsNullPtrErr	Indicates an error condition if any of the specified pointers is NULL.
ippStsSizeErr	Indicates an error condition if any field of the roiSize is less than 2.