BGRToYCbCr422

Converts 24-bit per pixel BGR image to 16-bit per pixel YCbCr image.

Syntax

Case 1: Operation on pixel-order data

IppStatus ippiBGRToYCbCr422_8u_C3C2R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize);

IppStatus ippiBGRToYCbCr422_8u_AC4C2R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize);

Case 2: Conversion from pixel-order to planar data

IppStatus ippiBGRToYCbCr422_8u_C3P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);

IppStatus ippiBGRToYCbCr422_8u_AC4P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);

pSrc	Pointer to the source mage ROI.
srcStep	Distance in bytes between starts of consecutive lines in the source image.
pDst	Pointer to the ROI in the destination pixel-order image. An array of pointers to ROI in each planes of the destination planar image.
dstStep	Distance in bytes between starts of consecutive lines in the destination pixel-order image. An array of distances in bytes for each plane of the destination planar image.
roiSize	Size of the source and destination ROI in pixels.

The function ippiBGRToYCbCr422 is declared in the ippcc.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function converts a three- or four-channel gamma-corrected B'G'R' image pSrc to the two-channel or three-planes Y'Cb'Cr' image pDst according to the same formulas as the function ippiRGBToYCbCr does. The difference is that ippiBGRToYCbCr422 uses the 4:2:2 sampling format (see Table “Pixel-Order Image Formats” and Table “Planar Image Formats” for more details).

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.width is less than 2 or roiSize.height is less than 1.