media-libs/
tremor

A fixed-point version of the Ogg Vorbis decoder (also known as libvorbisidec)

https://wiki.xiph.org/Tremor

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.