This project is part of the @thi.ng/umbrella monorepo.
Binary range encoder / decoder, based on Java implementation by Joe Halliwell.
STABLE - used in production
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- @thi.ng/bitstream - ES6 iterator based read/write bit streams with support for variable word widths
- @thi.ng/rle-pack - Binary run-length encoding packer w/ flexible repeat bit widths
yarn add @thi.ng/range-coderES module import:
<script type="module" src="https://cdn.skypack.dev/@thi.ng/range-coder"></script>For Node.js REPL:
# with flag only for < v16
node --experimental-repl-await
> const rangeCoder = await import("@thi.ng/range-coder");
Package sizes (gzipped, pre-treeshake): ESM: 668 bytes
import * as rc "@thi.ng/range-coder";
// prepare dummy data
src = new Uint8Array(1024);
src.set([1,1,1,1,1,2,2,2,2,3,3,3,4,4,5,4,4,3,3,3,2,2,2,2,1,1,1,1,1], 512);
// pack data
packed = rc.encodeBytes(src);
packed.length
// 146
packed.length/src.length
// 0.142578125
// unpack
dest = rc.decodeBytes(packed);Karsten Schmidt
If this project contributes to an academic publication, please cite it as:
@misc{thing-range-coder,
title = "@thi.ng/range-coder",
author = "Karsten Schmidt",
note = "https://thi.ng/range-coder",
year = 2017
}© 2017 - 2021 Karsten Schmidt // Apache Software License 2.0