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avfilter/af_volumedetect: use log10 instead of hardcoded constant

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This is likely more precise and conveys the intent better.

Reviewed-by: Mark Harris <mark.hsj@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-10-29 00:12:53 -04:00
parent 648b26acc5
commit 8c24380537
1 changed files with 1 additions and 1 deletions
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libavfilter/af_volumedetect.c
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@ -78,7 +78,7 @@ static inline double logdb(uint64_t v)
double d = v / (double)(0x8000 * 0x8000); double d = v / (double)(0x8000 * 0x8000);
if (!v) if (!v)
return MAX_DB; return MAX_DB;
return log(d) * -4.3429448190325182765112891891660508229; /* -10/log(10) */ return -log10(d) * 10;
} }
static void print_stats(AVFilterContext *ctx) static void print_stats(AVFilterContext *ctx)