import EventEmitter from 'eventemitter3';
import type { IBridge, RTMPEvents, RTMPStats, EncodeCapacityConfig } from './interface';
import { StreamTrackType } from './interface';
import Capture from './capture';
export default class Bridge extends EventEmitter<RTMPEvents> implements IBridge {
    _worker: Worker | null;
    _audioMsTrack: MediaStreamTrack | null;
    _videoMsTrack: MediaStreamTrack | null;
    _capture: Capture;
    static isSupported(): boolean;
    constructor();
    get audioMsTrack(): MediaStreamTrack | null;
    get videoMsTrack(): MediaStreamTrack | null;
    ready(): Promise<void>;
    _bindWorkerEvent(): void;
    addTrack(mst: MediaStreamTrack): void;
    replaceTrack(kind: StreamTrackType, mst: MediaStreamTrack | null): void;
    getStats(): Promise<RTMPStats>;
    _postVideoFrame(frame: VideoFrame, setting: MediaTrackConstraintSet): void;
    _postMockVideoEncodeFlag(): void;
    _setAVExist(v: boolean, a: boolean): void;
    _postAudioFrame(frame: AudioData, setting: MediaTrackConstraintSet): void;
    setEncodeCapacity(cfg: EncodeCapacityConfig): void;
    adjustBitrate(kind: StreamTrackType, bitrate: number): void;
    publish(url: string): void;
    unpublish(): void;
    destroy(): void;
    download(): void;
}