BGRToCbYCr422

Converts 32-bit per pixel BGR image to 16-bit per pixel CbYCr image.

Syntax

IppStatus ippiBGRToCbYCr422_8u_AC4C2R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize);

Parameters

pSrc	Pointer to the source image ROI.
srcStep	Distance in bytes between starts of consecutive lines in the source image.
pDst	Pointer to the destination image ROI.
dstStep	Distance in bytes between starts of consecutive lines in the destination image.
roiSize	Size of the source and destination ROI in pixels.

Description

The function ippiBGRToCbYCr422 is declared in the ippcc.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function converts the four-channel gamma-corrected B'G'R' image pSrc to the two-channel Cb'Y'Cr' image pDst according to the same formulas as the function ippiRGBToYCbCr does. The function ippiBGRToCbYCr422 uses 4:2:2 sampling format for the converted image. An alpha-channel information is lost.

An CbYCr image has the following sequence of bytes: Cb0Y0Cr0Y1, Cb1Y2Cr1Y3, ... .

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error condition if pSrc or pDst is NULL.
ippStsSizeErr	Indicates an error condition if roiSize has a field with a zero or negative value.