Enum SystemFrame 

pub enum SystemFrame {
    Start,
    Stop,
    Interrupt,
    SpeechStarted,
    SpeechStopped,
    Error {
        message: Arc<str>,
        fatal: bool,
    },
}

System frames: lifecycle, control, and errors.

These are bidirectional: Interrupt, Start/Stop, and the SpeechStarted/SpeechStopped voice-activity edges travel downstream; Error typically travels upstream. Immutable once constructed.

Variants

Start

Pipeline is starting; stages should initialise any runtime state.

Stop

Graceful shutdown; stages should flush and clean up.

Interrupt

User barged in; stages should discard in-flight work and reset.

SpeechStarted

Voice-activity detection observed the user start speaking. Travels downstream so stages can open an utterance and prepare to transcribe. Emitted by a VAD stage on the silence→speech edge, not per audio window.

SpeechStopped

Voice-activity detection observed the user stop speaking. Travels downstream so stages can close the utterance and flush it for transcription. Emitted on the speech→silence edge.

Error

An error propagated through the pipeline.

Fields

message: Arc<str>

Human-readable description of the error.

fatal: bool

Whether the error is unrecoverable and the pipeline should shut down.

Trait Implementations

impl Clone for SystemFrame

fn clone(&self) -> SystemFrame

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SystemFrame

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.