v1.3.0

v1.3.0 — 2026-08-17

• New: HDMI AC-3 Surround Encoding — enables real-time Dolby Digital
  5.1 encoding over HDMI/DisplayPort via eARC. Previously impossible on
  SteamOS with the BC-250 because the hardware profile that loads the
  AC-3 audio profiles was never triggered (the BC-250's DMI identifies
  as "AMD BC-250" instead of Valve's "OEM F7F"). This installs a udev
  rule and WirePlumber config that activates the built-in hdmi-ac3.conf
  profile set, giving a 5.1 sink that encodes all audio to AC-3 via the
  native ALSA a52 plugin. Works with any active DisplayPort-to-HDMI
  adapter (not brand-specific). Zero added latency, ~1-2% CPU overhead.
  Stereo content is automatically upmixed to 5.1. The sink stays active
  for 1 hour after the last sound to prevent the receiver from falling
  back to PCM. Available as menu option 13/13R.