/*
// Copyright 2015 2016 Intel Corporation All Rights Reserved.
//
// The source code, information and material ("Material") contained herein is
// owned by Intel Corporation or its suppliers or licensors, and title
// to such Material remains with Intel Corporation or its suppliers or
// licensors. The Material contains proprietary information of Intel
// or its suppliers and licensors. The Material is protected by worldwide
// copyright laws and treaty provisions. No part of the Material may be used,
// copied, reproduced, modified, published, uploaded, posted, transmitted,
// distributed or disclosed in any way without Intel's prior express written
// permission. No license under any patent, copyright or other intellectual
// property rights in the Material is granted to or conferred upon you,
// either expressly, by implication, inducement, estoppel or otherwise.
// Any license under such intellectual property rights must be express and
// approved by Intel in writing.
//
// Unless otherwise agreed by Intel in writing,
// you may not remove or alter this notice or any other notice embedded in
// Materials by Intel or Intel's suppliers or licensors in any way.
*/
// A simple example of performing a filtering an image using a general integer rectangular kernel
// implemented with Intel IPP functions:
// ippiImageJaehne_32f_C1R
// ippiFilterGaussianInit
// ippiFilterGaussianBorder_32f_C1R
#include <stdio.h>
#include "ipp.h"
#define WIDTH 128 /* image width */
#define HEIGHT 64 /* image height */
/* 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;
Ipp32f* pSrc = NULL, *pDst = NULL; /* Pointers to source/destination images */
int srcStep = 0, dstStep = 0; /* Steps, in bytes, through the source/destination images */
IppiSize roiSize = { WIDTH, HEIGHT }; /* Size of source/destination ROI in pixels */
Ipp32u kernelSize = 3;
Ipp32f sigma = 0.35f;
Ipp8u *pBuffer = NULL; /* Pointer to the work buffer */
IppFilterGaussianSpec* pSpec = NULL; /* context structure */
int iTmpBufSize = 0, iSpecSize = 0; /* Common work buffer size */
IppiBorderType borderType = ippBorderRepl;
Ipp8u borderValue = 0;
int numChannels = 1;
pSrc = ippiMalloc_32f_C1(roiSize.width, roiSize.height, &srcStep);
pDst = ippiMalloc_32f_C1(roiSize.width, roiSize.height, &dstStep);
check_sts( status = ippiImageJaehne_32f_C1R(pSrc, srcStep, roiSize) ) /* fill source image */
check_sts( status = ippiFilterGaussianGetBufferSize(roiSize, kernelSize, ipp32f,
numChannels, &iSpecSize, &iTmpBufSize) )
pSpec = (IppFilterGaussianSpec *)ippsMalloc_8u(iSpecSize);
pBuffer = ippsMalloc_8u(iTmpBufSize);
check_sts( status = ippiFilterGaussianInit(roiSize, kernelSize, sigma,
borderType, ipp32f, numChannels, pSpec, pBuffer) )
check_sts( status = ippiFilterGaussianBorder_32f_C1R(pSrc, srcStep, pDst, dstStep,
roiSize, borderValue, pSpec, pBuffer) )
EXIT_MAIN
ippsFree(pBuffer);
ippsFree(pSpec);
ippiFree(pSrc);
ippiFree(pDst);
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return (int)status;
}