import { TCallRole, TCallRoleSpectator } from './types';
type TOnRoleChanged = (params: {
    previous: TCallRole;
    next: TCallRole;
}) => void;
export declare class RoleManager {
    private role;
    private isAvailableSendingMedia;
    private readonly onRoleChanged?;
    private readonly listeners;
    constructor(onRoleChanged?: TOnRoleChanged);
    getRole(): TCallRole;
    getIsAvailableSendingMedia(): boolean;
    setCallRoleParticipant(): void;
    setCallRoleSpectatorSynthetic(isAvailableSendingMedia?: boolean): void;
    setCallRoleSpectator(recvParams: TCallRoleSpectator['recvParams'], isAvailableSendingMedia?: boolean): void;
    changeRole(next: TCallRole): void;
    reset(): void;
    hasParticipant(): boolean;
    hasSpectatorSynthetic(): boolean;
    hasSpectator(): boolean;
    subscribe(listener: TOnRoleChanged): () => void;
    private setRole;
}
export {};