import type { TransferredVoiceControls, VoiceHandoffChannel } from "./handoff-contract.ts";
import { type CapturedHandoffAudio } from "./handoff-peer.ts";
import { type LanTakeoverOffer } from "./lan/takeover.ts";
export declare function startVoiceDeparture(options: {
    channel: VoiceHandoffChannel;
    captured: CapturedHandoffAudio;
    waitForSettled(signal: AbortSignal): Promise<void>;
    onReleased(controls: TransferredVoiceControls): void;
    onClosed(error: Error): void;
    lanTakeover?: (offer: LanTakeoverOffer, releaseAudio: (beforeStop?: () => Promise<void>) => Promise<void>, verify: (proof: {
        port: number;
        token: string;
    }) => Promise<void>) => Promise<number | undefined>;
    onTakeoverUnavailable?(error: Error): void;
}): {
    completion: Promise<void>;
    readonly detached: boolean;
    close(): void;
};