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by throawayonthe 11 days ago
yes it makes sense to use C/ASM here, but if you're curious, there is a rust port of dav1d named rav1d: https://github.com/memorysafety/rav1d

it's not much slower than the original C/ASM implementation (last i checked ~5%?) but that matters here
2 comments
nick__m 11 days ago
It's a Rust/ASM port, look there: https://github.com/memorysafety/rav1d/blob/main/src/ext/x86/...

I am not sure if it is that much safer than the C version when raw assembly is still required.

link
Thaxll 11 days ago
It is much slower than 5%, there were other independent tests that put it around 20%.
link