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Published 20 hours ago • verified publisher icon libjxl

for -e 1: group tiles by type, then decode using SIMD

Open alantudyk opened this issue 1 year ago • 1 comments

Maybe other JXL-guys can answer? https://github.com/veluca93/fpnge/issues/26

alantudyk avatar Oct 05 '23 22:10 alantudyk

Hey, sorry for the delay.

The fjxl code is mostly here: https://github.com/libjxl/libjxl/blob/main/lib/jxl/enc_fast_lossless.cc

The decoding code is here: https://github.com/libjxl/libjxl/blob/main/lib/jxl/modular/encoding/encoding.cc

I have thought in the past about using SIMD to decode multiple groups, but I would be somewhat surprised if that would be effective - decoding needs to access somewhat large lookup tables.

veluca93 avatar Oct 05 '23 23:10 veluca93