Muninn/docs/muninn.md

Muninn

Muninn is Odin's portable local telemetry Verse assembler.

It runs on a device body and publishes a typed CultMesh/CultCache surface for what that body can sense or expose locally: screen capture, loopback audio, microphones, cameras, and future sensors.

Authority

• Owner: Muninn owns local telemetry discovery, stream affordance publication, and explicit activation of requested local streams.
• Inputs: cheap local probes, operator or Verse activation requests, and local capture tools such as FFmpeg or WASAPI helpers.
• Outputs: muninn.telemetry_surface.v1, active muninn.capture_stream.v1, and Move optical muninn.move_marker_candidate.v1 records.
• Forbidden writers: daemon startup, Idunn keepalive, Mimir ingest, OBS, Odin, Gjallar, and renderer bodies must not start capture by implication.

Runtime

cargo build -p muninn-daemon
muninn serve --store C:\Meta\Odin\state\muninn.telemetry.cc --interval-seconds 15
muninn --health --store C:\Meta\Odin\state\muninn.telemetry.cc

serve is cheap and idle. It publishes affordances and keeps the local Verse surface fresh without starting FFmpeg, screen capture, microphone capture, or loopback capture.

Muninn also writes an OBS stream catalog as typed CultCache state inside:

C:\Meta\Odin\state\muninn.telemetry.cc

The record is type muninn.obs_stream_catalog with schema muninn.obs_stream_catalog.v1 at key obs. On Starfire, health-muninn.ps1 syncs Raven's .cc store to the same local path so the OBS plugin can read CultCache directly without learning Raven SSH.

Activation is explicit:

.\scripts\activate-muninn-raven-av-srt.ps1

That Raven activation starts the requested screen and Realtek loopback stream and publishes muninn.capture_stream.v1. Mimir and OBS are stream consumers; they do not own Muninn.

The deployed loopback helper must accept Muninn's command contract:

wasapi-loopback-capture.ps1 -Output stdout -Device Realtek -SampleRate 48000 -Channels 2

stdout is an alias for binary standard output, and Device is the requested render-device hint. Current helper builds may ignore the hint and use the default render endpoint, but they must accept the argument so Muninn's generated mux command remains executable.

Move Marker Candidates

crates/muninn-move-tracker is Muninn's native/Rust PS Move optical candidate extractor. It owns dispatch planning, FFI, configuration validation, a CPU mirror, and the HLSL 16px-tile luma reduction shader. It emits marker candidates only: weighted centroid, radius, area, peak/mean luma, and score for one camera frame.

Muninn owns publishing those candidates as muninn.move_marker_candidate.v1. Mimir is a consumer of the resulting sensor stream. Odin may discover and project the schema, but Odin does not own raw capture, candidate extraction, calibration, triangulation, IMU fusion, prediction, or final 6DoF pose.