import type { VoiceServerEvent } from '@xopcai/realtime-protocol/voice';
export type VoiceEventSink = <T extends VoiceServerEvent['type']>(type: T, payload: Extract<VoiceServerEvent, {
    type: T;
}>['payload']) => void;
export interface VoiceEngine {
    start(): Promise<void>;
    appendAudio(bytes: Uint8Array): void;
    setInputMuted(muted: boolean): void | Promise<void>;
    commit(): Promise<void>;
    cancel(responseId: string, reason: 'client_cancelled' | 'barge_in'): boolean;
    cancelTask(taskId: string): Promise<boolean>;
    acknowledge(responseId: string, playedDurationMs: number): void;
    canOfferTaskUpdate?(): boolean;
    offerTaskUpdate?(input: {
        clientMessageId: string;
        content: string;
    }): Promise<boolean>;
    close(): void | Promise<void>;
}