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avfilter/af_aiir: make a/b coefficients array

This commit is contained in:
Paul B Mahol 2019-11-22 16:13:06 +01:00
parent e169d3756e
commit 2f5fb9e60f
1 changed files with 19 additions and 19 deletions
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38
libavfilter/af_aiir.c
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@ -38,8 +38,8 @@ typedef struct Pair {
} Pair;
typedef struct BiquadContext {
double a0, a1, a2;
double b0, b1, b2;
double a[3];
double b[3];
double i1, i2;
double o1, o2;
} BiquadContext;
@ -193,11 +193,11 @@ static int iir_ch_serial_## name(AVFilterContext *ctx, void *arg, int ch, int nb
int n, i; \
\
for (i = 0; i < nb_biquads; i++) { \
const double a1 = -iir->biquads[i].a1; \
const double a2 = -iir->biquads[i].a2; \
const double b0 = iir->biquads[i].b0; \
const double b1 = iir->biquads[i].b1; \
const double b2 = iir->biquads[i].b2; \
const double a1 = -iir->biquads[i].a[1]; \
const double a2 = -iir->biquads[i].a[2]; \
const double b0 = iir->biquads[i].b[0]; \
const double b1 = iir->biquads[i].b[1]; \
const double b2 = iir->biquads[i].b[2]; \
double i1 = iir->biquads[i].i1; \
double i2 = iir->biquads[i].i2; \
double o1 = iir->biquads[i].o1; \
@ -593,20 +593,20 @@ static int decompose_zp2biquads(AVFilterContext *ctx, int channels)
iir->ab[1][2 * nearest_zero.a] = iir->ab[1][2 * nearest_zero.a + 1] = NAN;
iir->ab[1][2 * nearest_zero.b] = iir->ab[1][2 * nearest_zero.b + 1] = NAN;
iir->biquads[current_biquad].a0 = 1.0;
iir->biquads[current_biquad].a1 = a[2] / a[4];
iir->biquads[current_biquad].a2 = a[0] / a[4];
iir->biquads[current_biquad].b0 = (b[4] / a[4]) * (current_biquad ? 1.0 : iir->g);
iir->biquads[current_biquad].b1 = (b[2] / a[4]) * (current_biquad ? 1.0 : iir->g);
iir->biquads[current_biquad].b2 = (b[0] / a[4]) * (current_biquad ? 1.0 : iir->g);
iir->biquads[current_biquad].a[0] = 1.0;
iir->biquads[current_biquad].a[1] = a[2] / a[4];
iir->biquads[current_biquad].a[2] = a[0] / a[4];
iir->biquads[current_biquad].b[0] = (b[4] / a[4]) * (current_biquad ? 1.0 : iir->g);
iir->biquads[current_biquad].b[1] = (b[2] / a[4]) * (current_biquad ? 1.0 : iir->g);
iir->biquads[current_biquad].b[2] = (b[0] / a[4]) * (current_biquad ? 1.0 : iir->g);
av_log(ctx, AV_LOG_VERBOSE, "a=%f %f %f:b=%f %f %f\n",
iir->biquads[current_biquad].a0,
iir->biquads[current_biquad].a1,
iir->biquads[current_biquad].a2,
iir->biquads[current_biquad].b0,
iir->biquads[current_biquad].b1,
iir->biquads[current_biquad].b2);
iir->biquads[current_biquad].a[0],
iir->biquads[current_biquad].a[1],
iir->biquads[current_biquad].a[2],
iir->biquads[current_biquad].b[0],
iir->biquads[current_biquad].b[1],
iir->biquads[current_biquad].b[2]);
current_biquad++;
}