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Code Issues Releases Activity

avfilter/af_afftdn: do not hardcode vector size

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This commit is contained in:
Paul B Mahol 2022-03-15 13:15:07 +01:00
parent 26292d4b6b
commit a2eb13c7e5
1 changed files with 18 additions and 17 deletions
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35
libavfilter/af_afftdn.c
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@ -30,6 +30,7 @@
#include "filters.h"
#define C (M_LN10 * 0.1)
#define SOLVE_SIZE (5)
#define NB_PROFILE_BANDS (15)
#define SFM_FLAGS_SIZE (512)
#define SFM_FLAGS_MASK (SFM_FLAGS_SIZE - 1)
@ -152,10 +153,10 @@ typedef struct AudioFFTDeNoiseContext {
int noise_band_edge[NB_PROFILE_BANDS + 2];
int noise_band_count;
double matrix_a[25];
double vector_b[5];
double matrix_b[5 * NB_PROFILE_BANDS];
double matrix_c[5 * NB_PROFILE_BANDS];
double matrix_a[SOLVE_SIZE * SOLVE_SIZE];
double vector_b[SOLVE_SIZE];
double matrix_b[SOLVE_SIZE * NB_PROFILE_BANDS];
double matrix_c[SOLVE_SIZE * NB_PROFILE_BANDS];
} AudioFFTDeNoiseContext;
#define OFFSET(x) offsetof(AudioFFTDeNoiseContext, x)
@ -267,19 +268,19 @@ static double process_get_band_noise(AudioFFTDeNoiseContext *s,
if (band < NB_PROFILE_BANDS)
return dnch->band_noise[band];
for (int j = 0; j < 5; j++) {
for (int j = 0; j < SOLVE_SIZE; j++) {
sum = 0.0;
for (int k = 0; k < NB_PROFILE_BANDS; k++)
sum += s->matrix_b[i++] * dnch->band_noise[k];
s->vector_b[j] = sum;
}
solve(s->matrix_a, s->vector_b, 5);
solve(s->matrix_a, s->vector_b, SOLVE_SIZE);
f = (0.5 * s->sample_rate) / s->band_centre[NB_PROFILE_BANDS-1];
f = 15.0 + log(f / 1.5) / log(1.5);
sum = 0.0;
product = 1.0;
for (int j = 0; j < 5; j++) {
for (int j = 0; j < SOLVE_SIZE; j++) {
sum += product * s->vector_b[j];
product *= f;
}
@ -670,24 +671,24 @@ static int config_input(AVFilterLink *inlink)
}
}
for (j = 0; j < 5; j++) {
for (k = 0; k < 5; k++) {
s->matrix_a[j + k * 5] = 0.0;
for (j = 0; j < SOLVE_SIZE; j++) {
for (k = 0; k < SOLVE_SIZE; k++) {
s->matrix_a[j + k * SOLVE_SIZE] = 0.0;
for (m = 0; m < NB_PROFILE_BANDS; m++)
s->matrix_a[j + k * 5] += pow(m, j + k);
s->matrix_a[j + k * SOLVE_SIZE] += pow(m, j + k);
}
}
factor(s->matrix_a, 5);
factor(s->matrix_a, SOLVE_SIZE);
i = 0;
for (j = 0; j < 5; j++)
for (j = 0; j < SOLVE_SIZE; j++)
for (k = 0; k < NB_PROFILE_BANDS; k++)
s->matrix_b[i++] = pow(k, j);
i = 0;
for (j = 0; j < NB_PROFILE_BANDS; j++)
for (k = 0; k < 5; k++)
for (k = 0; k < SOLVE_SIZE; k++)
s->matrix_c[i++] = pow(j, k);
s->window = av_calloc(s->window_length, sizeof(*s->window));
@ -997,17 +998,17 @@ static void set_noise_profile(AudioFFTDeNoiseContext *s,
temp[m] = sample_noise[m];
if (new_profile) {
for (int m = 0; m < 5; m++) {
for (int m = 0; m < SOLVE_SIZE; m++) {
sum = 0.0;
for (n = 0; n < NB_PROFILE_BANDS; n++)
sum += s->matrix_b[i++] * temp[n];
s->vector_b[m] = sum;
}
solve(s->matrix_a, s->vector_b, 5);
solve(s->matrix_a, s->vector_b, SOLVE_SIZE);
i = 0;
for (int m = 0; m < NB_PROFILE_BANDS; m++) {
sum = 0.0;
for (n = 0; n < 5; n++)
for (n = 0; n < SOLVE_SIZE; n++)
sum += s->matrix_c[i++] * s->vector_b[n];
temp[m] = sum;
}