import { Mic3AType } from "./interface";
export type PickAudioMode = 'pressButton' | 'free';
interface RecordControllerOptions {
    pickAudioMode?: PickAudioMode;
    audio3AConstraints?: Mic3AType;
    onAudioData: (pcmData: ArrayBuffer) => void;
    onError?: (err: Error) => void;
    pullAudioFromRtc?: boolean;
    brtcClient?: any;
    asrSample?: number;
}
declare class RecordController {
    private readonly onAudioData;
    private readonly onError?;
    private audioContext;
    private processor;
    private mediaStream;
    private recording;
    private audio3AConstraints?;
    private asrSample?;
    constructor(options: RecordControllerOptions);
    preWarmStream(): Promise<void>;
    start(): Promise<void>;
    stop(): void;
    destroy(): void;
}
export default RecordController;