CbYCr422ToBGR

Converts 16-bit per pixel CbYCr image to four channel BGR image.

Syntax

IppStatus ippiCbYCr422ToBGR_8u_C2C4R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize, Ipp8u aval);

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.
aval	Constant value to create the fourth channel.

Description

The function ippiCbYCr422ToBGR is declared in the ippcc.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function converts the Cb'Y'Cr' image pSrc, packed in 4:2:2 sampling format, to the four channel gamma-corrected B'G'R' image pDst according to the same formulas as the function ippiYCbCrToRGB does.

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

The output B'G'R' values are saturated to the range [0..255].

The fourth channel is created by setting channel values to the constant value aval.

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.