Developer Reference for Intel® Integrated Performance Primitives 2018

MulPack

Multiplies two source images in packed format.

Syntax

IppStatus ippiMulPack_<mod>(const Ipp32f* pSrc1, int src1Step, const Ipp32f* pSrc2, int src2Step, Ipp32f* pDst, int dstStep, IppiSize roiSize);

Supported values for mod:

32f_C1R

32f_C3R

32f_C4R

32f_AC4R

IppStatus ippiMulPack_<mod>(const Ipp32f* pSrc, int srcStep, Ipp32f* pSrcDst, int srcDstStep, IppiSize roiSize);

Supported values for mod:

32f_C1IR

32f_C3IR

32f_C4IR

32f_AC4IR

Include Files

ippi.h

Domain Dependencies

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

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

Parameters

pSrc1, pSrc2

Pointer to the ROI in the source images.

src1Step, src2Step

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

pDst

Pointer to the destination image ROI.

dstStep

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

pSrc

Pointer to the first source image ROI for the in-place operation.

srcStep

Distance in bytes between starts of consecutive lines in the first source image for the in-place operation.

pSrcDst

Pointer to the second source and destination image ROI for the in-place operation.

srcDstStep

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

roiSize

Size of the source and destination ROI in pixels.

scaleFactor

Scale factor (see Integer Result Scaling).

Description

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

This function multiplies corresponding pixel values of two source images, A and B represented in RCPack2D format and stores the result into the destination image C in packed format also. The multiplying is performed according to the following formulas:

ReC = ReA*ReB - ImA*ImB;

ImC = ImA*ReB + ImB*ReA.

Not-in-place flavors multiply pixel values of ROI in the source images pSrc1 and pSrc2, and store result in the pDst.

In-place flavors multiply pixel values of ROI in the source images pSrc and pSrcDst, and store result in the pSrcDst.

This function can be used in image filtering operations that include FFT transforms.

Example

MulPack.c

Return Values

ippStsNoErr

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

ippStsNullPtrErr

Indicates an error condition if any of the specified pointers is NULL.

ippStsSizeErr

Indicates an error condition if roiSize has a field with zero or negative value.

ippStsStepErr

Indicates an error condition if any of the specified buffer step values is zero or negative.