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avfilter/af_aiir: make it clear that transfer function is digital one

This commit is contained in:
Paul B Mahol 2020-05-29 20:44:41 +02:00
parent 1206a10d9c
commit 327b52412d
2 changed files with 2 additions and 2 deletions
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2
doc/filters.texi
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@ -1409,7 +1409,7 @@ Set coefficients format.
@table @samp
@item tf
transfer function
digital transfer function
@item zp
Z-plane zeros/poles, cartesian (default)
@item pr

2
libavfilter/af_aiir.c
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@ -1223,7 +1223,7 @@ static const AVOption aiir_options[] = {
{ "wet", "set wet gain", OFFSET(wet_gain), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, AF },
{ "format", "set coefficients format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=1}, 0, 3, AF, "format" },
{ "f", "set coefficients format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=1}, 0, 3, AF, "format" },
{ "tf", "transfer function", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "format" },
{ "tf", "digital transfer function", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "format" },
{ "zp", "Z-plane zeros/poles", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "format" },
{ "pr", "Z-plane zeros/poles (polar radians)", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "format" },
{ "pd", "Z-plane zeros/poles (polar degrees)", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "format" },