2021.05.04 20:59 "Re: [Tiff] SIMD optimizations", by Michael Shiels
I think the only thing I have ever seen that was super fast, was hand generated assembler, using specific pieces of code for each data byte as it moved through things. Very old library and used to be very expensive. But insanely fast decoder, not sure I dug too far into it's encoding but again I bet it was literally similar. Kinda state machine but with specific pieces of code to do with the next byte at any time. So big code, but fast.