ex_dsqfirsparse.c

/* 
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*/

#include "examples_doc_sq.h"
#include "dsp.h"

#define VLENGTH   10
#define MAX_DELAY 6
#define NUM_TAPS  3

int main(void)
{
    q15_t   coeffs[NUM_TAPS]   = { 1000, 2, -7000 };
    q31_t   tapDelay[NUM_TAPS] = {    2, 3,     5 };
    q15_t   stateDst[MAX_DELAY + VLENGTH] = { 0 };
    q15_t   src[VLENGTH] = { 0, 1, 2, 32765, -32765, -5, -6, -7, 23423, 4564 };
    q15_t   dst[VLENGTH];
    q15_t   bufferDst[VLENGTH];
    q31_t   bufferOutDst[VLENGTH];
    ippsq_fir_sparse_instance_q15 S;

    printf_v16s(" src =\n", " %d", src, VLENGTH);

    ippsq_fir_sparse_init_q15(&S, NUM_TAPS, coeffs, stateDst, (int32_t*)tapDelay, MAX_DELAY, VLENGTH);
    printf_v16s("Before:\n stateDst =\n", " %d", S.pState, S.maxDelay + VLENGTH);
    printf_v16s(" coeffs =\n", " %d", S.pCoeffs, S.numTaps);
    printf_v32s(" tapDelay =\n", " %d", S.pTapDelay, S.numTaps);
    QM_PRINTF("max delay = %d\n", S.maxDelay);
    QM_PRINTF("state index = %d\n", S.stateIndex);

    ippsq_fir_sparse_q15(&S, src, dst, bufferDst, bufferOutDst, VLENGTH);

    printf_v16s("After:\n stateDst =\n", " %d", S.pState, S.maxDelay + VLENGTH);
    printf_v16s(" dst =\n", " %d", dst, VLENGTH);
    printf_v16s(" bufferDst =\n", " %d", bufferDst, VLENGTH);
    printf_v32s(" bufferOutDst =\n", " %d", bufferOutDst, VLENGTH);

    CONTROL_RETURN;
}
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