Commit 96bc40c1b36775afdbad4ae05a6b3f48e2eebeb9

DRC 2023-01-26T13:11:58

Implement arithmetic coding with 12-bit precision This actually works and apparently always has worked. It only failed because the libjpeg code, which did not originally support arithmetic coding, assumed that optimize_coding should always be TRUE for 12-bit data precision.