@@ -17897,7 +17897,23 @@ Set if channels should be drawn separately or overlap. Default value is 0.
Set colors separated by '|' which are going to be used for drawing of each channel.
@item scale
-Set amplitude scale. Can be linear @code{lin} or logarithmic @code{log}.
+Set amplitude scale.
+
+Available values are:
+@table @samp
+@item lin
+Linear.
+
+@item log
+Logarithmic.
+
+@item sqrt
+Square root.
+
+@item cbrt
+Cubic root.
+@end table
+
Default is linear.
@end table
@@ -676,6 +676,8 @@ static const AVOption showwavespic_options[] = {
{ "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
+ { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
+ { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
{ NULL }
};
The 'sqrt' and 'cbrt' scalers were added in commit 80262d8c86e94ff9a4bb3a9e3c2d734e04ccb399, but their symbolic option values only made available to the showwaves filter, not showwavespic, despite the scalers working properly by their numerical option values. Signed-off-by: Moritz Barsnick <barsnick@gmx.net> --- doc/filters.texi | 18 +++++++++++++++++- libavfilter/avf_showwaves.c | 2 ++ 2 files changed, 19 insertions(+), 1 deletion(-)