import { RtpCapabilities, SignalingPcRes, IceParameters, IceCandidates } from "../types";
import { ConsumerInfo } from "../models/Connection/Handler";
/**
 * unified-plan 发布重协商时，chrome 生成的 offer 里 msid 参数没有和实际的 trackId 对应
 * 这里重新做 msid 的对应
 */
export declare function addPlanBTracksToUnifiedPlan(offer: string, tracks: MediaStreamTrack[], mids: string[]): string;
export declare class RemoteSdp {
    direction: "send" | "recv";
    extendedRtpCapabilities: RtpCapabilities;
    lastSubMids: string[];
    sessionVersion: number;
    readonly transportRemoteParameters: undefined | SignalingPcRes;
    private _transportRemoteParameters?;
    constructor(direction: "send" | "recv", rtpcap: RtpCapabilities);
    setTransportRemoteParameters(remoteParameters: SignalingPcRes): Promise<void>;
    createRemoteAnswer(offer: string): string;
    createRemoteOffer(consumerInfos: ConsumerInfo[]): string;
    updateICEData(iceParameters: IceParameters, iceCandidates: IceCandidates[]): Promise<void>;
}
export declare function getClientCapabilitiesSdp(): Promise<any>;
export declare function createPlanBAnswerSdp(rtpcaps: RtpCapabilities, data: SignalingPcRes, offer: string): string;
/**
 * unified-plan 对 mid 顺序敏感，必须保证每次重协商顺序一致
 */
export declare function sortConsumerInfos(infos: ConsumerInfo[], lastSubMids: string[]): ConsumerInfo[];
export declare function createUnifiedPlanAnswerSdp(rtpcaps: RtpCapabilities, data: SignalingPcRes, offer: string): string;
export declare function removeAudioREDLine(sdp: string): string;
export declare function transformOfferSdp(sdp: string, layers?: number): string;