Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

ID 790148
Date 6/24/2024
Public

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Document Table of Contents

CopyWrapBorder

Copies pixels values between two images and adds the border pixels.

Syntax

Case 1: Not-in-place operation

IppStatus ippiCopyWrapBorder_32s_C1R(const Ipp32s* pSrc, int srcStep, IppiSize srcRoiSize, Ipp32s* pDst, int dstStep, IppiSize dstRoiSize, int topBorderHeight, int leftBorderWidth);

IppStatus ippiCopyWrapBorder_32f_C1R(const Ipp32f* pSrc, int srcStep, IppiSize srcRoiSize, Ipp32f* pDst, int dstStep, IppiSize dstRoiSize, int topBorderHeight, int leftBorderWidth);

Case 2: In-place operation

IppStatus ippiCopyWrapBorder_32s_C1IR(const Ipp32s* pSrc, int srcDstStep, IppiSize srcRoiSize, IppiSize dstRoiSize, int topBorderHeight, int leftBorderWidth);

IppStatus ippiCopyWrapBorder_32f_C1IR(const Ipp32f* pSrc, int srcDstStep, IppiSize srcRoiSize, IppiSize dstRoiSize, int topBorderHeight, int leftBorderWidth);

Case 3: Not-in-place operation with platform-aware functions

IppStatus ippiCopyWrapBorder_32s_C1R_L(const Ipp32s* pSrc, IppSizeL srcStep, IppiSizeL srcRoiSize, Ipp32s* pDst, IppSizeL dstStep, IppiSizeL dstRoiSize, IppSizeL topBorderHeight, IppSizeL leftBorderWidth);

IppStatus ippiCopyWrapBorder_32f_C1R_L(const Ipp32f* pSrc, IppSizeL srcStep, IppiSizeL srcRoiSize, Ipp32f* pDst, IppSizeL dstStep, IppiSizeL dstRoiSize, IppSizeL topBorderHeight, IppSizeL leftBorderWidth);

Case 4: In-place operation with platform-aware functions

IppStatus ippiCopyWrapBorder_32s_C1IR_L(const Ipp32s* pSrc, IppSizeL srcDstStep, IppiSizeL srcRoiSize, IppiSizeL dstRoiSize, IppSizeL topBorderHeight, IppSizeL leftBorderWidth);

IppStatus ippiCopyWrapBorder_32f_C1IR_L(const Ipp32f* pSrc, IppSizeL srcDstStep, IppiSizeL srcRoiSize, IppiSizeL dstRoiSize, IppSizeL topBorderHeight, IppSizeL leftBorderWidth);

Include Files

ippi.h

Flavors with the _L suffix: ippi_l.h

Domain Dependencies

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

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

srcDstStep

Distance in bytes between starts of consecutive lines in the source and destination image for in-place flavor.

srcRoiSize

Size of the source ROI in pixels.

dstRoiSize

Size of the destination ROI in pixels.

topBorderHeight

Height of the top border in pixels.

leftBorderWidth

Width of the left border in pixels.

Description

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

This function copies the source image pSrc to the destination image pDst and fills pixels ("border") outside the copied area in the destination image with the values of the source image pixels according to the scheme illustrated in Figure Creating a Border of Pixels by ippiCopyWrapBorder Function. Squares marked in red correspond to pixels copied from the source image.

Note that the in-place function flavor actually adds border pixels to the source image ROI, thus a destination image ROI is larger than the initial image.

The parameters topBorderHeight and leftBorderWidth specify the position of the first pixel of the source ROI in the destination image ROI.

Creating a Border of Pixels by ippiCopyWrapBorder Function



The height (width) of the destination ROI cannot be less than the sum of the height (width) of source ROI and the topBorderHeight (leftBorderWidth) parameter.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or a warning.

ippStsNullPtrErr

Indicates an error when any of the specified pointers is NULL.

ippStsSizeErr

Indicates an error condition if srcRoiSize or dstRoiSize has a field with a zero or negative value, or topBorderHeight or leftBorderWidth is less than zero, or dstRoiSize.width < srcRoiSize.width + leftBorderWidth, or dstRoiSize.height < srcRoiSize.height + topBorderHeight.

ippStsStepErr

Indicates an error condition if srcStep or dstStep has a zero or negative value.

ippStsNotEvenStepErr

Indicates an error condition if one of the step values is not divisible by 4 for floating point images, or by 2 for short integer images.

Example

The code example below shows how to use the ippiCopyWrapBorder_32s_C1R function.

Ipp32s src[8*4] = {
       5, 4, 3, 4, 5, 8, 8, 8,
       3, 2, 1, 2, 3, 8, 8, 8,
       3, 2, 1, 2, 3, 8, 8, 8,
       5, 4, 3, 4, 5, 8, 8, 8
       };
Ipp32s dst[9*8];
IppiSize srcRoi = { 5, 4 };
IppiSize dstRoi = { 9, 8 };
int topborderHeight  = 2;
int leftborderWidth = 2;
		
ippiCopyWrapBorder_32s_C1R (src, 8*sizeof(Ipp32s), srcRoi, dst, 
                   9*sizeof(Ipp32s), dstRoi, topBorderHeight, leftBorderWidth);
		
		Results
source image:
   5 4 3 4 5 8 8 8
   3 2 1 2 3 8 8 8
   3 2 1 2 3 8 8 8
   5 4 3 4 5 8 8 8
		
destination image:
   2 3 3 2 1 2 3 3 2
   4 5 5 4 3 4 5 5 4
   4 5 5 4 3 4 5 5 4
   2 3 3 2 1 2 3 3 2
   2 3 3 2 1 2 3 3 2
   4 5 5 4 3 4 5 5 4
   4 5 5 4 3 4 5 5 4
   2 3 3 2 1 2 3 3 2