Re: Optimizing libpng encode time

Dear Adam,

> I have cleaned up that optimization to libpng encoding that I
> discussed about a month and a half ago, which I would like to propose
> for inclusion along with a couple of trivial patches which I will also
> discuss in this message.

There is a github repository by current maintainer, Cosmin Truta:
https://github.com/pnggroup/libpng-EXPERIMENTAL

Best,
Akira