Crate seyd_qos 

QoS profiles — the latency/quality trade-off as a named choice.

The link constrains total bytes on the wire, so a profile is one budget split three ways: pixels, redundancy, headroom. The boundary from SPEC.md: Seyd owns the transport-observable targets (bitrate ceiling, latency budget, max GOP) and its own policy (FEC rates, backlog drop threshold, the pilot’s close-out deadlines). The publisher owns resolution, preset, VBV and the actual GOP. There is no resolution here, and there must never be.

The closed-loop ABR controller that moves the bitrate inside the ceiling is abr::AbrController; the profile is its bound.

Where a publisher offers several encodings of the same picture, simulcast::LayerSelector picks which one those bits buy (ADR 0008). Note that it names layers and the bitrate each needs — never their resolution, so the boundary above still holds.

Modules

abr

Closed-loop rate control inside the QoS ceiling (PLAN.md §1.3).

simulcast

Which encoding to relay, given how many bits the link will carry.

Structs

Profile

Enums

OnLoss

Constants

BALANCED

DEFAULT

LATENCY

PROFILES

QUALITY

Functions

get

Look up a profile by name (case-insensitive). None for unknown names — callers decide whether to fall back to DEFAULT or reject.