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avfilter/avf_showvolume: use log10 instead of log()/M_LN10

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This is likely more precise and conveys the intent better.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-10-29 00:15:25 -04:00
parent b45daad2aa
commit 0fe5dcd660
1 changed files with 1 additions and 1 deletions
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libavfilter/avf_showvolume.c
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@ -197,7 +197,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
max = FFMAX(max, src[i]);
max = av_clipf(max, 0, 1);
values[VAR_VOLUME] = 20.0 * log(max) / M_LN10;
values[VAR_VOLUME] = 20.0 * log10(max);
values[VAR_CHANNEL] = c;
color = av_expr_eval(s->c_expr, values, NULL);