Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference
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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);
Include Files
ippcc.h
Domain Dependencies
Headers: ippcore.h, ippvm.h, ipps.h, ippi.h
Libraries: ippcore.lib, ippvm.lib, ipps.lib, ippi.lib
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
This function 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. |