Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

BGRToYCrCb420

Converts a BGR image to the YCrCb image with 4:2:0 sampling format.

Syntax

IppStatus ippiBGRToYCrCb420_8u_C3P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);

IppStatus ippiBGRToYCrCb420_8u_AC4P3R(const Ipp8u* pSrc, int srcStep, 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

pSrc

Pointer to the source image ROI.

srcStep

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

pDst

An array of pointers to ROI in separate planes of the destination image.

dstStep

An array of distances in bytes between starts of consecutive lines in the destination image planes.

roiSize

Size of the source and destination ROI in pixels.

Description

This function 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 planar Y'Cr'Cb' image pDst according to the same formulas as the function ippiRGBToYCbCr does. The destination image pDst has the 4:2:0 sampling format and the following order of pointers: Y-plane, Cr-plane, Cb-plane (see Table “Planar Image Formats” for more details).

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