Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

ResizeYUV420GetSrcRoi

Computes the ROI of the source image for NV12 resizing by tile processing.

Syntax

Single precision

IppStatus ippiResizeYUV420GetSrcRoi(const IppiResizeYUV420Spec* pSpec, IppiPoint dstRoiOffset, IppiSize dstRoiSize, IppiPoint* srcRoiOffset, IppiSize* srcRoiSize);

Include Files

ippi.h

Domain Dependencies

Headers: ippcore.h, ippvm.h, ipps.h

Libraries: ippcore.lib, ippvm.lib, ipps.lib

Parameters

pSpec

Pointer to the spec structure for the resize filter.

dstRoiOffset

Offset of the tiled destination image ROI.

dstRoiSize

Size of the tiled destination image ROI.

srcRoiOffset

Offset of the source image ROI.

srcRoiSize

Pointer to the size of the source image ROI.

Description

This function computes the ROI of the processed source image using the processed ROI of the destination image for the corresponding resize transform by tile processing. The pSpec parameter defines the resize algorithm parameters. Prior to using the ippiResizeYUV420GetSrcRoi function, you need to initialize the pSpec parameter by calling one of the following functions: ippiResizeYUV420LanczosInit or ippiResizeYUV420SuperInit functions.

NOTE:

If the destination ROI size exceeds the image origin, the source ROI will be obtained for an intersection of the destination ROI and image origin.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error if one of the specified pointers is NULL.

ippStsContextMatchErr

Indicates an error if pointer to the spec structure is invalid.

ippStsOutOfRangeErr

Indicates an error if the destination image offset point is outside the destination image origin.

ippStsMisalignedOffsetErr

Indicates an error if one of the fields of the dstRoiOffset parameter is odd.

ippStsSizeErr

Indicates an error if one of the fields of the dstRoiSize is less than 2.

ippStsSizeWrn

Indicates a warning if the destination ROI exceeds the destination image origin or contains odd values.