[FFmpeg-cvslog] avfilter/avf_showspectrum: add 4th and 5th root scaler

[Ganesh Ajjanagadde]

On Sat, Jan 2, 2016 at 9:53 AM, Paul B Mahol <git at videolan.org> wrote:
> ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Jan  2 18:10:03 2016 +0100| [af018d802d5f16ead8ce86b56e2316f0979e0105] | committer: Paul B Mahol
>
> avfilter/avf_showspectrum: add 4th and 5th root scaler
>
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
[...]
> +            case FOURTHRT:
> +                a = pow(a, 0.25);

could have made this a sqrt(sqrt(a)).

[...]