/*
// Copyright 2015 2016 Intel Corporation All Rights Reserved.
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*/
// A simple example of computing the universal image quality index for two images.
// implemented with Intel IPP functions:
// ippiImageJaehne_32f_C1R
// ippiImageJaehne_32f_C1R
// ippiAddRandUniform_32f_C1IR
// ippiQualityIndexGetBufferSize
// ippiQualityIndex_32f_C1R
#include <stdio.h>
#include "ipp.h"
/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine: /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if IPP function returned status different from ippStsNoErr */
/* Results of ippMalloc() are not validated because Intel(R) Integrated Performance Primitives functions perform bad arguments check and will return an appropriate status */
int main(void)
{
IppStatus status = ippStsNoErr;
/* Pointers to source images */
Ipp32f pSrc1[256*256];
Ipp32f pSrc2[256*256];
/* Distance in bytes between starts of consecutive lines in the source images */
int src1Step = 256*sizeof(Ipp32f);
int src2Step = 256*sizeof(Ipp32f);
Ipp32f qIndex = 0; /* quality index value */
IppiSize roiSize = {256,256};
unsigned int pSeed = 3;
int bufSize = 0; /* work buffer size */
Ipp8u *pBuffer = NULL; /* pointer to the work buffer */
/* create reference image (image1) */
check_sts( status = ippiImageJaehne_32f_C1R( pSrc1, src1Step, roiSize ) )
/* ... and distorted image (image2 = image1 + RandUniform) */
check_sts( status = ippiImageJaehne_32f_C1R( pSrc2, src2Step, roiSize ) )
check_sts( status = ippiAddRandUniform_32f_C1IR(pSrc2, src2Step, roiSize, 0, 1, &pSeed) )
check_sts( status = ippiQualityIndexGetBufferSize( ipp32f, ippC1, roiSize, &bufSize ) )
/* work buffer memory allocation */
pBuffer = (Ipp8u*)ippMalloc( bufSize );
/* computes the universal image quality index for two images pSrc1 and pSrc2 */
check_sts( status = ippiQualityIndex_32f_C1R( pSrc1, src1Step, pSrc2, src2Step, roiSize, &qIndex, pBuffer ) )
EXIT_MAIN
ippFree( pBuffer );
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return (int)status;
}