OpenRemap Docs

0.6.2 — 2026-08-10

Rust map hunter — scan_map_axes and scan_map_tables ported to Rust with 26× speedup, plus a new scan-maps CLI command for structural calibration map discovery.

Added — Rust Map Hunter (_rs/src/map_hunter.rs)

  • scan_map_axes (26× faster) — finds all monotonically-increasing 16-bit sequences in a binary. Deduplication by containment, region offset handling, byte-order detection.
  • scan_map_tables (26.6× faster) — pairs axes into 2D calibration tables with multi-dimension scoring.
  • Hybrid dispatch — map_hunter joins entropy and diff in the Rust backend. Python bytes.find() is still used for search (CPython's Two-Way/FASTSEARCH is faster than Rust's memchr for our workload).
  • scan_map_axes and scan_map_tables wrappers in map_hunter.py convert Rust tuples → Python NamedTuples transparently.

Added — CLI

  • openremap scan-maps — structural calibration map scanner. No manufacturer identification needed; finds RPM/load breakpoints and the rectangular data blocks that follow them.
    • --min-score / -s — minimum table score (default 0.75)
    • --region / -r — restrict scanning to a byte range
    • --top / -n — number of top-scoring tables to show (default 20)
    • --json — machine-readable JSON output
    • Health signal: ≥1000 axes = genuine calibration binary; <100 = likely encrypted or non-ECU.

Changed

  • Version callback (openremap --version) now shows active backend: openremap 0.6.2 (rust) or openremap 0.6.2 (python).
  • .gitignore — added openremap/*.so to block proc-macro and misc build artefact leakage into the Python package directory.