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Peter Helcmanovsky (Ped) 9913dcf4bb z80_unpacker: comment with possible LUT variant of updating probs value

missing 512 byte table generator, which doesn't look trivial to do
(especially in terms of code size).
Not tested, but looks as decent speed up.

2022-09-19 14:31:00 +02:00

c_unpacker

implement simplified prob update, update unpack.c

2022-09-10 12:01:42 +02:00

src

-r reverses both input and output

2022-09-18 23:38:41 +02:00

z80_unpacker

z80_unpacker: comment with possible LUT variant of updating probs value

2022-09-19 14:31:00 +02:00

.gitignore

first version, only very simple greedy packer

2021-11-19 21:40:37 +01:00

Cargo.lock

speed optimizations + progress bar

2021-11-25 22:43:39 +01:00

Cargo.toml

speed optimizations + progress bar

2021-11-25 22:43:39 +01:00

compare-variants

forgot to add back -l 9

2022-09-15 00:18:30 +02:00

README.md

a few speed and/or compression ratio improvements

2021-11-24 22:35:24 +01:00

UNLICENSE

a few speed and/or compression ratio improvements

2021-11-24 22:35:24 +01:00

README.md

Upkr

Upkr is a simple general purpose lz packer designed to be used in the MicroW8 platform. The compressed format is losely based on Shrinkler with the main difference being that Upkr doesn't differnetiate between literals at odd or even addresses and that I went with rANS/rABS instead of a range coder.

At this point, Upkr should still be considered unstable - the compressed format is not very likely to change but I still want to keep that option open a little longer.

Inspirations:

Languages

Rust 51%

Assembly 31.5%

C 8.6%

JavaScript 5%

Makefile 3.9%