/*******************************************************************************
* 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.
*******************************************************************************/
#include <math.h>
#include <stdio.h>
#include "ipp.h"
#undef NUMITERS
#define NUMITERS 150
/* 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()
{
int n = 0, i = 0, specSize = 0, bufferSize = 0;
IppStatus status;
IppsIIRState_32f *pIIRState = NULL; /* Pointer to Intel(R) IPP state structure */
IppsFIRSpec_32f *pFIRSpec = NULL; /* Pointer to FIR Spec structure */
Ipp32f *x = ippsMalloc_32f(NUMITERS + 10),
*y = ippsMalloc_32f(NUMITERS),
*z = ippsMalloc_32f(NUMITERS);
const float taps[] = {
0.0051f, 0.0180f, 0.0591f, 0.1245f, 0.1869f, 0.2127f, 0.1869f,
0.1245f, 0.0591f, 0.0180f, 0.0051f, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
Ipp8u* pBuf = NULL; /* Pointer to the work buffers */
for (n = 0; n < NUMITERS; ++n) x[n] = (float)sin(IPP_2PI *n *0.2);
check_sts( status = ippsIIRGetStateSize_32f(10, &bufferSize) )
pBuf = ippsMalloc_8u(bufferSize);
check_sts( status = ippsIIRInit_32f(&pIIRState, taps, 10, NULL, pBuf) )
check_sts( status = status = ippsIIR_32f(x, y, NUMITERS, pIIRState) )
ippsFree(pBuf); pBuf = NULL;
for (i = 120; i < 120+5; i++) printf("%f,", y[i]);
printf("\n");
check_sts( status = ippsFIRSRGetSize(11, ipp32f, &specSize, &bufferSize) )
pFIRSpec = (IppsFIRSpec_32f *)ippsMalloc_8u(specSize);
pBuf = ippsMalloc_8u(bufferSize);
check_sts( status = ippsFIRSRInit_32f(taps, 11, ippAlgDirect, pFIRSpec) )
check_sts( status = ippsFIRSR_32f(x, z, NUMITERS, pFIRSpec, NULL, NULL, pBuf) )
for (i = 120; i < 120+5; i++) printf("%f,", z[i]);
printf("\n");
EXIT_MAIN
ippsFree(pBuf);
ippsFree(z);
ippsFree(y);
ippsFree(x);
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return (int)status;
}