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avfilter/af_arls: improve documentation and extend option

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This commit is contained in:
Paul B Mahol 2023-05-01 19:38:17 +02:00
parent 159f8b8d71
commit f09280dfc4
2 changed files with 8 additions and 2 deletions
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7
doc/filters.texi
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@ -3004,10 +3004,13 @@ Pass the 1st input.
Pass the 2nd input.
@item o
Pass filtered samples.
Pass difference between desired, 2nd input and error signal estimate.
@item n
Pass difference between desired and filtered samples.
Pass difference between input, 1st input and error signal estimate.
@item e
Pass error signal estimated samples.
Default value is @var{o}.
@end table

3
libavfilter/af_arls.c
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@ -33,6 +33,7 @@ enum OutModes {
DESIRED_MODE,
OUT_MODE,
NOISE_MODE,
ERROR_MODE,
NB_OMODES
};
@ -70,6 +71,7 @@ static const AVOption arls_options[] = {
{ "d", "desired", 0, AV_OPT_TYPE_CONST, {.i64=DESIRED_MODE}, 0, 0, AT, "mode" },
{ "o", "output", 0, AV_OPT_TYPE_CONST, {.i64=OUT_MODE}, 0, 0, AT, "mode" },
{ "n", "noise", 0, AV_OPT_TYPE_CONST, {.i64=NOISE_MODE}, 0, 0, AT, "mode" },
{ "e", "error", 0, AV_OPT_TYPE_CONST, {.i64=ERROR_MODE}, 0, 0, AT, "mode" },
{ NULL }
};
@ -156,6 +158,7 @@ static float process_sample(AudioRLSContext *s, float input, float desired, int
case DESIRED_MODE: output = desired; break;
case OUT_MODE: output = desired - output; break;
case NOISE_MODE: output = input - output; break;
case ERROR_MODE: break;
}
return output;
}