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Code Issues Releases Activity

avfilter/af_adynamicequalizer: always start filtering from unit gain

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This commit is contained in:
Paul B Mahol 2023-11-05 11:47:38 +01:00
parent f9fdaa2ca9
commit 799fad1828
2 changed files with 16 additions and 9 deletions
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18
libavfilter/adynamicequalizer_template.c
View File

@ -149,6 +149,8 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
const ftype ratio = s->ratio;
const ftype range = s->range;
const ftype tfrequency = FMIN(s->tfrequency, sample_rate * 0.5);
const int mode = s->mode;
const int power = (mode == CUT_BELOW || mode == CUT_ABOVE) ? -1 : 1;
const ftype release = s->release_coef;
const ftype attack = s->attack_coef;
const ftype tqfactor = s->tqfactor;
@ -158,7 +160,6 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
const int end = (in->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
const int detection = s->detection;
const int tftype = s->tftype;
const int mode = s->mode;
const ftype *da = fn(s->da);
const ftype *dm = fn(s->dm);
@ -171,6 +172,7 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
ftype *fstate = fn(cc->fstate);
ftype *dstate = fn(cc->dstate);
ftype gain = fn(cc->gain);
const int init = cc->init;
if (detection < 0)
fn(cc->threshold) = threshold;
@ -189,23 +191,20 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
case LISTEN:
break;
case CUT_BELOW:
if (detect < threshold)
new_gain = ONE / CLIP(ONE + makeup + (threshold - detect) * ratio, ONE, range);
break;
case CUT_ABOVE:
if (detect > threshold)
new_gain = ONE / CLIP(ONE + makeup + (detect - threshold) * ratio, ONE, range);
break;
case BOOST_BELOW:
if (detect < threshold)
new_gain = CLIP(ONE + makeup + (threshold - detect) * ratio, ONE, range);
break;
case CUT_ABOVE:
case BOOST_ABOVE:
if (detect > threshold)
new_gain = CLIP(ONE + makeup + (detect - threshold) * ratio, ONE, range);
break;
}
if (power < 0)
new_gain = ONE / new_gain;
if (mode > LISTEN) {
ftype delta = new_gain - gain;
@ -215,7 +214,7 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
new_gain = gain + release * delta;
}
if (gain != new_gain) {
if (gain != new_gain || !init) {
gain = new_gain;
switch (tftype) {
@ -263,6 +262,7 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
}
fn(cc->gain) = gain;
cc->init = 1;
}
return 0;

7
libavfilter/af_adynamicequalizer.c
View File

@ -43,6 +43,7 @@ typedef struct ChannelContext {
float fstate_float[2];
float gain_float;
float threshold_float;
int init;
} ChannelContext;
typedef struct AudioDynamicEqualizerContext {
@ -132,6 +133,12 @@ static int config_input(AVFilterLink *inlink)
break;
}
for (int ch = 0; ch < inlink->ch_layout.nb_channels; ch++) {
ChannelContext *cc = &s->cc[ch];
cc->gain_float = 1.f;
cc->gain_double = 1.0;
}
return 0;
}