import UserType from '../enums/UserType';
import { ExternalParticipant, ExternalParticipantListMarker } from '../types/ExternalId';
import { CompositeUserId, OkUserId, Participant, ParticipantId, ParticipantStateMapped } from '../types/Participant';
import SignalingMessage from '../types/SignalingMessage';
import VideoSettings from '../types/VideoSettings';
export declare const PARAMETERS_SEPARATOR = ":";
export declare const DEVICE_IDX_PARAMETER = "d";
/** @hidden */
declare namespace Utils {
    function patchLocalSDP(sdp: string, preferH264: boolean, brokenH264Decoder: boolean, preferVP9: boolean, isAudioNack?: boolean): string;
    function patchRemoteSDP(sdp: string, oldDataChannelDescription: boolean, preferH264: boolean, brokenH264: boolean, preferVP9: boolean, brokenVP9Encoder: boolean, brokenVP9Decoder: boolean): string;
    function getPeerIdString(peerId: SignalingMessage.PeerId): string;
    function comparePeerId(peerId1: SignalingMessage.PeerId, peerId2: SignalingMessage.PeerId): boolean;
    function getPeerConnectionHostInfo(pc: RTCPeerConnection): Promise<{
        local: any;
        remote: any;
    }>;
    function composeUserId(id: CompositeUserId | OkUserId, type?: UserType): CompositeUserId;
    function composeParticipantId(id: CompositeUserId | OkUserId, type: UserType, deviceIdx?: number): ParticipantId;
    function compose(compositeId: CompositeUserId, deviceIdx?: number): ParticipantId;
    function composeId(participant: SignalingMessage.Participant): ParticipantId;
    function composeDecorativeId(participant: SignalingMessage.Participant): ParticipantId | undefined;
    function composeMessageId(message: SignalingMessage): ParticipantId;
    function extractOkId(id: OkUserId | CompositeUserId | ParticipantId): OkUserId;
    function decomposeId(compositeId: CompositeUserId | OkUserId): {
        id: OkUserId;
        type: UserType;
    };
    function decomposeParticipantId(participantId: ParticipantId): {
        compositeUserId: CompositeUserId;
        deviceIdx: number;
    };
    function uuid(): string;
    function debounce<F extends (...args: Parameters<F>) => ReturnType<F>>(func: F, ms: number): (this: any, ..._args: Parameters<F>) => void;
    function sdpFingerprint(sdp: string): bigint | null;
    function delay(time: number, { signal }?: {
        signal?: AbortSignal;
    }): Promise<void>;
    function applySettings(pc: RTCPeerConnection, videoSettings: VideoSettings, prevSettings: any): any;
    function applyVideoTrackSettings(videoSettings: VideoSettings, s: RTCRtpSender, track: MediaStreamTrack | null, prevSettings: any, retSettings: any): void;
    /**
     * Проверяет, есть ли в первом массиве хотя бы один элемент из второго массива
     * @param arr Где ищем
     * @param search Что ищем
     */
    function includesOneOf(arr: string[], search: string | string[]): boolean;
    /**
     * Маппер клиентского состояния участника звонка
     * @param participant список участников звонка
     * @hidden
     */
    function mapParticipantState(participant: Pick<SignalingMessage.Participant, 'participantState'>): ParticipantStateMapped;
    /**
     * мапает данные `participants` перед передачей клиенту
     * @hidden
     */
    function mapSharedParticipants(participants: Participant[]): ExternalParticipant[];
    /**
     * сравнивает `participantState`
     */
    function isEqualParticipantState(prev: ParticipantStateMapped, next: ParticipantStateMapped): boolean;
    function isObjectsEquals<T extends string, K>(obj1: {
        [key in T]?: K;
    }, obj2: {
        [key in T]?: K;
    }, deep?: boolean): boolean;
    function isArraysEquals<T>(arr1: T[], arr2: T[]): boolean;
    function isEmptyObject(obj: object): boolean;
    /**
     * @see https://wiki.odkl.ru/pages/viewpage.action?spaceKey=VIDEO&title=Signaling+API#SignalingAPI-Постраничныйвыводпартисипантов
     * https://stash.odkl.ru/projects/ODKL/repos/odnoklassniki-webrtc/browse/src/main/java/one/webrtc/domain/conversation/ParticipantIndex.java#67-78
     */
    function participantMarkerCompare(marker1: ExternalParticipantListMarker | undefined, marker2: ExternalParticipantListMarker | undefined): number;
    /** убирает все ключи со значением `V` на 1 уровне */
    function objectFilterOutValues<T extends Record<string, V>, V = unknown>(obj: T, value?: unknown | unknown[]): Partial<T>;
    function objectReduce<R, T extends object>(obj: T, callback: (acc: R, value: T[keyof T], key: keyof T) => R, initialValue: R): R;
    const setImmediate: (fn: VoidFunction) => VoidFunction;
    function isObject(obj: unknown): obj is object;
    function patchSimulcastAnswerSdp(sdp: string, trans: RTCRtpTransceiver, width: number, height: number): string;
}
export default Utils;