Implementing rANS is simpler than arithmetic coding or Huffman. This syndrome-trellis code sounds like picture-resembling QR codes from https://ieeexplore.ieee.

Implementing rANS is simpler than arithmetic coding or Huffman. This syndrome-trellis code sounds like picture-resembling QR codes from https://ieeexplore.ieee.org/document/7348695 https://ieeexplore.ieee.org/document/7348695 - here is implementation: https://github.com/JarekDuda/PRcodes/blob/master/PRcodes.cpp https://github.com/JarekDuda/PRcodes/blob/master/PRcodes.cpp