By cstark27, johngalt1, Urnyx05
Complete changelog available on Urnyx05's XDA thread.
This is based on GCam 8.1, made in collaboration with @cstark27 and @johngalt1. Works on both Pixels and non-Pixels.
"It still doesn't work on some devices, like Snapdragon 845 ones or maybe Samsung and Oneplus devices".