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avfilter/af_afftdn: use single define for number of bands in noise profile

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This commit is contained in:
Paul B Mahol 2022-03-12 11:17:15 +01:00
parent d0a999a0ab
commit 983b15e5f4
1 changed files with 52 additions and 51 deletions
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103
libavfilter/af_afftdn.c
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@ -32,6 +32,7 @@
#define C (M_LN10 * 0.1)
#define RATIO 0.98
#define RRATIO (1.0 - RATIO)
#define NB_PROFILE_BANDS (15)
enum OutModes {
IN_MODE,
@ -49,9 +50,9 @@ enum NoiseType {
};
typedef struct DeNoiseChannel {
int band_noise[15];
double noise_band_auto_var[15];
double noise_band_sample[15];
int band_noise[NB_PROFILE_BANDS];
double noise_band_auto_var[NB_PROFILE_BANDS];
double noise_band_sample[NB_PROFILE_BANDS];
double *amt;
double *band_amt;
double *band_excit;
@ -70,10 +71,10 @@ typedef struct DeNoiseChannel {
AVTXContext *fft, *ifft;
av_tx_fn tx_fn, itx_fn;
double noise_band_norm[15];
double noise_band_avr[15];
double noise_band_avi[15];
double noise_band_var[15];
double noise_band_norm[NB_PROFILE_BANDS];
double noise_band_avr[NB_PROFILE_BANDS];
double noise_band_avi[NB_PROFILE_BANDS];
double noise_band_var[NB_PROFILE_BANDS];
double sfm_threshold;
double sfm_alpha;
@ -113,7 +114,7 @@ typedef struct AudioFFTDeNoiseContext {
int sample_advance;
int number_of_bands;
int band_centre[15];
int band_centre[NB_PROFILE_BANDS];
int *bin2band;
double *window;
@ -132,12 +133,12 @@ typedef struct AudioFFTDeNoiseContext {
double sample_floor;
double auto_floor;
int noise_band_edge[17];
int noise_band_edge[NB_PROFILE_BANDS + 2];
int noise_band_count;
double matrix_a[25];
double vector_b[5];
double matrix_b[75];
double matrix_c[75];
double matrix_b[5 * NB_PROFILE_BANDS];
double matrix_c[5 * NB_PROFILE_BANDS];
} AudioFFTDeNoiseContext;
#define OFFSET(x) offsetof(AudioFFTDeNoiseContext, x)
@ -165,7 +166,7 @@ static const AVOption afftdn_options[] = {
{ "rf", "set the residual floor", OFFSET(residual_floor), AV_OPT_TYPE_FLOAT, {.dbl =-38}, -80,-20, AFR },
{ "track_noise", "track noise", OFFSET(track_noise), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AFR },
{ "tn", "track noise", OFFSET(track_noise), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AFR },
{ "track_residuals", "track residual",OFFSET(track_residual), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AFR },
{ "track_residual", "track residual", OFFSET(track_residual), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AFR },
{ "tr", "track residual", OFFSET(track_residual), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AFR },
{ "output_mode", "set output mode", OFFSET(output_mode), AV_OPT_TYPE_INT, {.i64 = OUT_MODE}, 0, NB_MODES-1, AFR, "mode" },
{ "om", "set output mode", OFFSET(output_mode), AV_OPT_TYPE_INT, {.i64 = OUT_MODE}, 0, NB_MODES-1, AFR, "mode" },
@ -236,18 +237,18 @@ static int process_get_band_noise(AudioFFTDeNoiseContext *s,
double product, sum, f;
int i = 0;
if (band < 15)
if (band < NB_PROFILE_BANDS)
return dnch->band_noise[band];
for (int j = 0; j < 5; j++) {
sum = 0.0;
for (int k = 0; k < 15; k++)
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);
f = (0.5 * s->sample_rate) / s->band_centre[14];
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;
@ -399,7 +400,7 @@ static void process_frame(AudioFFTDeNoiseContext *s, DeNoiseChannel *dnch,
sum = av_clipd(sum, -min, max);
sum = exp(sum);
for (int i = 0; i < 15; i++)
for (int i = 0; i < NB_PROFILE_BANDS; i++)
dnch->noise_band_auto_var[i] *= sum;
} else if (dnch->sfm_results[2] >= dnch->sfm_threshold) {
dnch->sfm_fail_flags[s->block_count & 0x1FF] = 1;
@ -487,8 +488,8 @@ static int get_band_edge(AudioFFTDeNoiseContext *s, int band)
{
int i;
if (band == 15) {
i = lrint(s->band_centre[14] * 1.224745);
if (band == NB_PROFILE_BANDS) {
i = lrint(s->band_centre[NB_PROFILE_BANDS - 1] * 1.224745);
} else {
i = lrint(s->band_centre[band] / 1.224745);
}
@ -508,7 +509,7 @@ static void set_band_parameters(AudioFFTDeNoiseContext *s,
if (m == j) {
i = j;
d5 = band_noise;
if (k == 15) {
if (k >= NB_PROFILE_BANDS) {
j = s->bin_count;
} else {
j = s->fft_length * get_band_centre(s, k) / s->sample_rate;
@ -523,7 +524,7 @@ static void set_band_parameters(AudioFFTDeNoiseContext *s,
}
dnch->rel_var[s->fft_length2] = exp(band_noise * C);
for (i = 0; i < 15; i++)
for (i = 0; i < NB_PROFILE_BANDS; i++)
dnch->noise_band_auto_var[i] = s->max_var * exp((process_get_band_noise(s, dnch, i) - 2.0) * C);
for (i = 0; i <= s->fft_length2; i++) {
@ -536,7 +537,7 @@ static void read_custom_noise(AudioFFTDeNoiseContext *s, int ch)
{
DeNoiseChannel *dnch = &s->dnch[ch];
char *p, *arg, *saveptr = NULL;
int i, ret, band_noise[15] = { 0 };
int i, ret, band_noise[NB_PROFILE_BANDS] = { 0 };
if (!s->band_noise_str)
return;
@ -545,7 +546,7 @@ static void read_custom_noise(AudioFFTDeNoiseContext *s, int ch)
if (!p)
return;
for (i = 0; i < 15; i++) {
for (i = 0; i < NB_PROFILE_BANDS; i++) {
if (!(arg = av_strtok(p, "| ", &saveptr)))
break;
@ -614,7 +615,7 @@ static int config_input(AVFilterLink *inlink)
s->bin_count = s->fft_length2 + 1;
s->band_centre[0] = 80;
for (i = 1; i < 15; i++) {
for (i = 1; i < NB_PROFILE_BANDS; i++) {
s->band_centre[i] = lrint(1.5 * s->band_centre[i - 1] + 5.0);
if (s->band_centre[i] < 1000) {
s->band_centre[i] = 10 * (s->band_centre[i] / 10);
@ -630,7 +631,7 @@ 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 (m = 0; m < 15; m++)
for (m = 0; m < NB_PROFILE_BANDS; m++)
s->matrix_a[j + k * 5] += pow(m, j + k);
}
}
@ -639,11 +640,11 @@ static int config_input(AVFilterLink *inlink)
i = 0;
for (j = 0; j < 5; j++)
for (k = 0; k < 15; k++)
for (k = 0; k < NB_PROFILE_BANDS; k++)
s->matrix_b[i++] = pow(k, j);
i = 0;
for (j = 0; j < 15; j++)
for (j = 0; j < NB_PROFILE_BANDS; j++)
for (k = 0; k < 5; k++)
s->matrix_c[i++] = pow(j, k);
@ -669,15 +670,15 @@ static int config_input(AVFilterLink *inlink)
switch (s->noise_type) {
case WHITE_NOISE:
for (i = 0; i < 15; i++)
for (i = 0; i < NB_PROFILE_BANDS; i++)
dnch->band_noise[i] = 0;
break;
case VINYL_NOISE:
for (i = 0; i < 15; i++)
for (i = 0; i < NB_PROFILE_BANDS; i++)
dnch->band_noise[i] = get_band_noise(s, i, 50.0, 500.5, 2125.0) + FFMAX(i - 7, 0);
break;
case SHELLAC_NOISE:
for (i = 0; i < 15; i++)
for (i = 0; i < NB_PROFILE_BANDS; i++)
dnch->band_noise[i] = get_band_noise(s, i, 1.0, 500.0, 1.0E10) + FFMAX(i - 12, -5);
break;
case CUSTOM_NOISE:
@ -836,20 +837,20 @@ static int config_input(AVFilterLink *inlink)
s->noise_band_edge[0] = FFMIN(s->fft_length2, s->fft_length * get_band_edge(s, 0) / s->sample_rate);
i = 0;
for (int j = 1; j < 16; j++) {
for (int j = 1; j < NB_PROFILE_BANDS + 1; j++) {
s->noise_band_edge[j] = FFMIN(s->fft_length2, s->fft_length * get_band_edge(s, j) / s->sample_rate);
if (s->noise_band_edge[j] > lrint(1.1 * s->noise_band_edge[j - 1]))
i++;
s->noise_band_edge[16] = i;
s->noise_band_edge[NB_PROFILE_BANDS + 1] = i;
}
s->noise_band_count = s->noise_band_edge[16];
s->noise_band_count = s->noise_band_edge[NB_PROFILE_BANDS + 1];
return 0;
}
static void init_sample_noise(DeNoiseChannel *dnch)
{
for (int i = 0; i < 15; i++) {
for (int i = 0; i < NB_PROFILE_BANDS; i++) {
dnch->noise_band_norm[i] = 0.0;
dnch->noise_band_avr[i] = 0.0;
dnch->noise_band_avi[i] = 0.0;
@ -881,7 +882,7 @@ static void sample_noise_block(AudioFFTDeNoiseContext *s,
j = edge;
k = 0;
n = j;
edgemax = fmin(s->fft_length2, s->noise_band_edge[15]);
edgemax = fmin(s->fft_length2, s->noise_band_edge[NB_PROFILE_BANDS]);
for (int i = j; i <= edgemax; i++) {
if ((i == j) && (i < edgemax)) {
if (j > edge) {
@ -893,7 +894,7 @@ static void sample_noise_block(AudioFFTDeNoiseContext *s,
k++;
edge = j;
j = s->noise_band_edge[k];
if (k == 15) {
if (k == NB_PROFILE_BANDS) {
j++;
}
var = 0.0;
@ -931,8 +932,8 @@ static void finish_sample_noise(AudioFFTDeNoiseContext *s,
dnch->noise_band_auto_var[i] = dnch->noise_band_var[i];
sample_noise[i] = (1.0 / C) * log(dnch->noise_band_var[i] / s->floor) - 100.0;
}
if (s->noise_band_count < 15) {
for (int i = s->noise_band_count; i < 15; i++)
if (s->noise_band_count < NB_PROFILE_BANDS) {
for (int i = s->noise_band_count; i < NB_PROFILE_BANDS; i++)
sample_noise[i] = sample_noise[i - 1];
}
}
@ -942,25 +943,25 @@ static void set_noise_profile(AudioFFTDeNoiseContext *s,
double *sample_noise,
int new_profile)
{
int new_band_noise[15];
double temp[15];
int new_band_noise[NB_PROFILE_BANDS];
double temp[NB_PROFILE_BANDS];
double sum = 0.0, d1;
float new_noise_floor;
int i = 0, n;
for (int m = 0; m < 15; m++)
for (int m = 0; m < NB_PROFILE_BANDS; m++)
temp[m] = sample_noise[m];
if (new_profile) {
for (int m = 0; m < 5; m++) {
sum = 0.0;
for (n = 0; n < 15; n++)
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);
i = 0;
for (int m = 0; m < 15; m++) {
for (int m = 0; m < NB_PROFILE_BANDS; m++) {
sum = 0.0;
for (n = 0; n < 5; n++)
sum += s->matrix_c[i++] * s->vector_b[n];
@ -969,24 +970,24 @@ static void set_noise_profile(AudioFFTDeNoiseContext *s,
}
sum = 0.0;
for (int m = 0; m < 15; m++)
for (int m = 0; m < NB_PROFILE_BANDS; m++)
sum += temp[m];
d1 = (int)(sum / 15.0 - 0.5);
d1 = (int)(sum / NB_PROFILE_BANDS - 0.5);
if (!new_profile)
i = lrint(temp[7] - d1);
for (d1 -= dnch->band_noise[7] - i; d1 > -20.0; d1 -= 1.0)
;
for (int m = 0; m < 15; m++)
for (int m = 0; m < NB_PROFILE_BANDS; m++)
temp[m] -= d1;
new_noise_floor = d1 + 2.5;
if (new_profile) {
av_log(s, AV_LOG_INFO, "bn=");
for (int m = 0; m < 15; m++) {
for (int m = 0; m < NB_PROFILE_BANDS; m++) {
new_band_noise[m] = lrint(temp[m]);
new_band_noise[m] = av_clip(new_band_noise[m], -24, 24);
av_log(s, AV_LOG_INFO, "%d ", new_band_noise[m]);
@ -1055,12 +1056,12 @@ static void get_auto_noise_levels(AudioFFTDeNoiseContext *s,
for (int i = 0; i < s->noise_band_count; i++) {
levels[i] = (1.0 / C) * log(dnch->noise_band_auto_var[i] / s->floor) - 100.0;
}
if (s->noise_band_count < 15) {
for (int i = s->noise_band_count; i < 15; i++)
if (s->noise_band_count < NB_PROFILE_BANDS) {
for (int i = s->noise_band_count; i < NB_PROFILE_BANDS; i++)
levels[i] = levels[i - 1];
}
} else {
for (int i = 0; i < 15; i++) {
for (int i = 0; i < NB_PROFILE_BANDS; i++) {
levels[i] = -100.0;
}
}
@ -1086,7 +1087,7 @@ static int output_frame(AVFilterLink *inlink, AVFrame *in)
if (s->track_noise) {
for (int ch = 0; ch < inlink->channels; ch++) {
DeNoiseChannel *dnch = &s->dnch[ch];
double levels[15];
double levels[NB_PROFILE_BANDS];
get_auto_noise_levels(s, dnch, levels);
set_noise_profile(s, dnch, levels, 0);
@ -1117,7 +1118,7 @@ static int output_frame(AVFilterLink *inlink, AVFrame *in)
if (s->sample_noise_end) {
for (int ch = 0; ch < inlink->channels; ch++) {
DeNoiseChannel *dnch = &s->dnch[ch];
double sample_noise[15];
double sample_noise[NB_PROFILE_BANDS];
finish_sample_noise(s, dnch, sample_noise);
set_noise_profile(s, dnch, sample_noise, 1);