Dav2D Roadmap
On-going

Complete C implementation of the decoder,
Provide a usable API,
Port to most platforms,

mais il manque tout ça ...
After

Make it fast on desktop, by writing asm for AVX2 chips.
Make it fast on mobile, by writing asm for ARMv8 chips,
Make it fast on older desktop, by writing asm for SSSE3+ chips,
Make...

Source: VideoCardz.com
https://videocardz.com/newz/videolan-publishes-dav2d-an-early-cpu-decoder-for-av2-video-codec