Converts 4:1:1 YCbCr image to 4:2:0 YCrCb image.

Syntax

IppStatus ippiYCbCr411ToYCrCb420_8u_P2P3R(const Ipp8u* pSrcY, int srcYStep, const Ipp8u* pSrcCbCr, int srcCbCrStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);

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

pSrcY

Pointer to the ROI in the luminance plane of the source image.

srcYStep

Distance in bytes between starts of consecutive lines in the luminance plane of the source image.

pSrcCbCr

Pointer to the ROI in the interleaved chrominance plane of the source image.

srcCbCrStep

Distance in bytes between starts of consecutive lines in the interleaved chrominance plane of 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 each plane of the destination image.

roiSize

Size of the ROI in pixels, its width should be multiple of 4, its height should be multiple of 2.

Description

This function operates with ROI (see Regions of Interest in Intel IPP).

This function converts the 4:1:1 two-plane source image pSrc to the 4:2:0 three-plane image pDst with a different order of components. The first plane of the source image pSrcY contains luminance samples Y0, Y1, Y2, ..., the second plane pSrcCbCr contains interleaved chrominance samples Cb0, Cr0, Cb1, Cr1, ... .The destination image has the following order of pointers: Y-plane, Cr-plane, Cb-plane (see 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 roiSize.width is less than 4 or roiSize.height is less than 2.
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