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avfilter/af_adynamicequalizer: merge direction option with mode option

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More user-friendly and self-explanatory what certain mode does.
release/7.0
Paul B Mahol 1 year ago
parent 43226efc21
commit fd1712b6fb
3 changed files with 52 additions and 45 deletions
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  1. 22
      doc/filters.texi
  2. 46
      libavfilter/adynamicequalizer_template.c
  3. 23
      libavfilter/af_adynamicequalizer.c

22
doc/filters.texi
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@ -1054,12 +1054,16 @@ Set the mode of filter operation, can be one of the following:
@table @samp
@item listen
Output only isolated detection signal.
@item cut
@item cutbelow
Cut frequencies below detection threshold.
@item cutabove
Cut frequencies above detection threshold.
@item boost
Boost frequencies bellow detection threshold.
@item boostbelow
Boost frequencies below detection threshold.
@item boostabove
Boost frequencies above detection threshold.
@end table
Default mode is @samp{cut}.
Default mode is @samp{cutbelow}.
@item dftype
Set the type of detection filter, can be one of the following:
@ -1082,16 +1086,6 @@ Set the type of target filter, can be one of the following:
@end table
Default type is @samp{bell}.
@item direction
Set processing direction relative to threshold.
@table @samp
@item downward
Boost/Cut if threshold is higher/lower than detected volume.
@item upward
Boost/Cut if threshold is lower/higher than detected volume.
@end table
Default direction is @samp{downward}.
@item auto
Automatically gather threshold from detection filter. By default
is @samp{disabled}.

46
libavfilter/adynamicequalizer_template.c
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@ -157,7 +157,6 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
const int start = (in->ch_layout.nb_channels * jobnr) / nb_jobs;
const int end = (in->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
const int detection = s->detection;
const int direction = s->direction;
const int tftype = s->tftype;
const int mode = s->mode;
const ftype *da = fn(s->da);
@ -177,7 +176,7 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
fn(cc->threshold) = threshold;
for (int n = 0; n < out->nb_samples; n++) {
ftype detect, v, listen;
ftype detect, v, listen, new_gain = ONE;
ftype k, g;
detect = listen = fn(get_svf)(src[n], dm, da, dstate);
@ -186,31 +185,38 @@ static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int n
if (detection > 0)
fn(cc->threshold) = FMAX(fn(cc->threshold), detect);
if (mode >= 0) {
if (direction == 0 && detect < threshold) {
detect = CLIP(ONE + makeup + (threshold - detect) * ratio, ONE, range);
if (!mode)
detect = ONE / detect;
} else if (direction == 1 && detect > threshold) {
detect = CLIP(ONE + makeup + (detect - threshold) * ratio, ONE, range);
if (!mode)
detect = ONE / detect;
} else {
detect = ONE;
switch (mode) {
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 BOOST_ABOVE:
if (detect > threshold)
new_gain = CLIP(ONE + makeup + (detect - threshold) * ratio, ONE, range);
break;
}
{
ftype delta = detect - gain;
if (mode > LISTEN) {
ftype delta = new_gain - gain;
if (delta > EPSILON)
detect = gain + attack * delta;
new_gain = gain + attack * delta;
else if (delta < -EPSILON)
detect = gain + release * delta;
}
new_gain = gain + release * delta;
}
if (gain != detect) {
gain = detect;
if (gain != new_gain) {
gain = new_gain;
switch (tftype) {
case 0:

23
libavfilter/af_adynamicequalizer.c
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@ -23,6 +23,15 @@
#include "audio.h"
#include "formats.h"
enum FilterModes {
LISTEN = -1,
CUT_BELOW,
CUT_ABOVE,
BOOST_BELOW,
BOOST_ABOVE,
NB_MODES,
};
typedef struct ChannelContext {
double fa_double[3], fm_double[3];
double dstate_double[2];
@ -52,7 +61,6 @@ typedef struct AudioDynamicEqualizerContext {
double attack_coef;
double release_coef;
int mode;
int direction;
int detection;
int tftype;
int dftype;
@ -179,10 +187,12 @@ static const AVOption adynamicequalizer_options[] = {
{ "ratio", "set ratio factor", OFFSET(ratio), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 30, FLAGS },
{ "makeup", "set makeup gain", OFFSET(makeup), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 100, FLAGS },
{ "range", "set max gain", OFFSET(range), AV_OPT_TYPE_DOUBLE, {.dbl=50}, 1, 200, FLAGS },
{ "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, -1, 1, FLAGS, "mode" },
{ "listen", 0, 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, FLAGS, "mode" },
{ "cut", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
{ "boost", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
{ "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, LISTEN,NB_MODES-1,FLAGS, "mode" },
{ "listen", 0, 0, AV_OPT_TYPE_CONST, {.i64=LISTEN}, 0, 0, FLAGS, "mode" },
{ "cutbelow", 0, 0, AV_OPT_TYPE_CONST, {.i64=CUT_BELOW},0, 0, FLAGS, "mode" },
{ "cutabove", 0, 0, AV_OPT_TYPE_CONST, {.i64=CUT_ABOVE},0, 0, FLAGS, "mode" },
{ "boostbelow", 0, 0, AV_OPT_TYPE_CONST, {.i64=BOOST_BELOW},0, 0, FLAGS, "mode" },
{ "boostabove", 0, 0, AV_OPT_TYPE_CONST, {.i64=BOOST_ABOVE},0, 0, FLAGS, "mode" },
{ "dftype", "set detection filter type",OFFSET(dftype), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "dftype" },
{ "bandpass", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "dftype" },
{ "lowpass", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "dftype" },
@ -192,9 +202,6 @@ static const AVOption adynamicequalizer_options[] = {
{ "bell", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "tftype" },
{ "lowshelf", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "tftype" },
{ "highshelf",0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "tftype" },
{ "direction", "set direction", OFFSET(direction), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "direction" },
{ "downward", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "direction" },
{ "upward", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "direction" },
{ "auto", "set auto threshold", OFFSET(detection), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, FLAGS, "auto" },
{ "disabled", 0, 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, FLAGS, "auto" },
{ "off", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "auto" },

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