Module onvif 

ONVIF (Profile S MVP): WS-Discovery, a device probe, and PTZ control.

All SOAP is hand-rolled with format! and parsed by substring extraction (no XML crate, per the kernel’s offline-build constraint). Authentication uses a WS-Security UsernameToken with a PasswordDigest = base64(sha1(nonce + created + password)) built from the existing sha1 + base64 crates.

Scope (intentionally narrow): device identification (GetDeviceInformation), service discovery (GetCapabilities, falling back to GetServices), media profiles (GetProfiles), best-effort stream URI (GetStreamUri), and PTZ (ContinuousMove / Stop / GetPresets / GotoPreset). Events, Profile G (recording/replay), Profile T, imaging, and absolute/relative moves are out of scope.

Structs

DiscoveredOnvifDevice

A device found by WS-Discovery.

Functions

continuous_move

Continuously pan/tilt/zoom at the given normalized velocities (each clamped to -1.0..=1.0). The motion runs until stop (or the device’s own timeout).

discover

Multicast a WS-Discovery Probe and collect ProbeMatch replies for the configured window.

get_presets

Fetch the camera’s PTZ presets, persist them (upsert + prune stale), and return the current set.

goto_preset

Move the camera to a stored preset by its device token.

load_onvif

Load a camera’s persisted ONVIF profile (404 when the camera has not been probed yet).

probe

Probe a camera’s ONVIF interface and persist the result into camera_onvif.

stop

Stop all PTZ motion (pan/tilt + zoom).