Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

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.