ex_dsqbiquad.c

/* 
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*/

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

#define VLENGTH 8
#define NUM_BQ  2

int main(void)
{
    q15_t src[VLENGTH] = { 0, 1, 2, 32765, -32765, -5, -6, -7 };
    q15_t coeffs[NUM_BQ * 5]  = { 1000, 2000, 1000, -1000, -2000, 100, 200, 100, -100, -200 };
    q15_t dlyLine[NUM_BQ * 4] = { 0 };
    q15_t dst[VLENGTH];
    ippsq_biquad_casd_df1_inst_q15 S;

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

    ippsq_biquad_cascade_df1_init_q15(&S, NUM_BQ, coeffs, dlyLine, 0);
    printf_v16s("coeffs =\n", " %d", S.pCoeffs, S.numStages * 5);
    printf_v16s("dlyLine =\n", " %d", S.pState, S.numStages * 4);
    QM_PRINTF("postShift = %d\n", S.postShift);

    ippsq_biquad_cascade_df1_q15(&S, src, dst, VLENGTH);

    printf_v16s("dst =\n", " %d", dst, VLENGTH);
    printf_v16s("dlyLine =\n", " %d", S.pState, S.numStages * 4);

    CONTROL_RETURN;
}
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