/*******************************************************************************
* Copyright 2015-2018 Intel Corporation.
*
* This software and the related documents are Intel copyrighted materials, and
* your use of them is governed by the express license under which they were
* provided to you (License). Unless the License provides otherwise, you may not
* use, modify, copy, publish, distribute, disclose or transmit this software or
* the related documents without Intel's prior written permission.
*
* This software and the related documents are provided as is, with no express
* or implied warranties, other than those that are expressly stated in the
* License.
*******************************************************************************/
//Perform linear filtering of an image using one of
// predefined convolution kernels.
// ippiFilterSobelVertSecondBorderGetBufferSize
// ippiFilterSobelVertSecondBorder_8u16s_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 Intel(R) Integrated Primitives (Intel(R) IPP) function returned status different from ippStsNoErr */
/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status */
int main(void)
{
IppStatus status = ippStsNoErr;
Ipp8u pSrc[8*8]={
4, 4, 4, 4, 4, 4, 4, 4,
4, 3, 3, 3, 3, 3, 3, 4,
4, 3, 2, 2, 2, 2, 3, 4,
4, 3, 2, 1, 1, 2, 3, 4,
4, 3, 2, 1, 1, 2, 3, 4,
4, 3, 2, 2, 2, 2, 3, 4,
4, 3, 3, 3, 3, 3, 3, 4,
4, 4, 4, 4, 4, 4, 4, 4
};
Ipp16s pDst[8*8];
IppiSize roiSize = { 8, 8 };
Ipp8u borderValue = 3;
int pBufferSize = 0;
Ipp8u* pBuffer = NULL;
check_sts( status = ippiFilterSobelVertSecondBorderGetBufferSize(roiSize, ippMskSize3x3,
ipp8u, ipp16s, 1, &pBufferSize))
pBuffer = ippiMalloc_8u_C1 ( 8, 8, &pBufferSize );
check_sts( status = ippiFilterSobelVertSecondBorder_8u16s_C1R ( pSrc, 8, pDst, 8*sizeof(Ipp16s), roiSize,
ippMskSize3x3, ippBorderConst, borderValue, pBuffer ) )
EXIT_MAIN
ippsFree(pBuffer);
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return status;
}
/*
Result:
4 4 4 4 4 4 4 4
4 3 3 3 3 3 3 4
4 3 2 2 2 2 3 4
4 3 2 1 1 2 3 4
4 3 2 1 1 2 3 4 pSrc
4 3 2 2 2 2 3 4
4 3 3 3 3 3 3 4
4 4 4 4 4 4 4 4
-4 1 0 0 0 0 1 -4
-7 2 1 0 0 1 2 -7
-8 1 2 1 1 2 1 -8
-8 0 1 3 3 1 0 -8
-8 0 1 3 3 1 0 -8 pDst
-8 1 2 1 1 2 1 -8
-7 2 1 0 0 1 2 -7
-4 1 0 0 0 0 1 -4
*/