pub fn subscribe_mic_level(handler: impl Fn(f32) + 'static)Expand description
Subscribe to the mic-level Tauri event (M-AUDIO.METER /
AUT-287) emitted by MicCapturePipeline at ~20 Hz. The handler
receives an EMA-smoothed RMS in [0.0, ~1.0].
Returns immediately; the listener runs for the lifetime of the
app (no cancellation today — the worker stops emitting when
stop_mic_capture drops the pipeline, which is sufficient
cleanup).