import type { MutableRefObject } from "react";
import { type VideoWanted } from "./videoDemand.js";
import type { AudioTransportOffer } from "../../transport/session.js";
interface SFUConnectionRefs {
    isDisconnectingRef: MutableRefObject<boolean>;
    sfuWebSocketRef: MutableRefObject<WebSocket | null>;
    peerConnectionRef: MutableRefObject<RTCPeerConnection | null>;
}
export interface SFUWebSocketCloseInfo {
    code: number;
    reason: string;
    wasClean: boolean;
}
interface SFUConnectionOptions {
    /**
     * Called only after room_joined has completed and the SFU WebSocket later closes
     * abnormally, so the outer hook can mark the state FAILED and let auto-reconnect run.
     */
    onAbnormalClose?: (info: SFUWebSocketCloseInfo) => void;
    /**
     * What the SFU said about itself when it let us in. Called once, before the
     * connect promise resolves.
     */
    onRoomJoined?: (info: RoomJoinedInfo) => void;
    /** What viewers want of one of our streams, from an SFU that says (GRYT-1432). */
    onVideoWanted?: (wanted: VideoWanted & {
        mid: string;
    }) => void;
    /** Which own-transport sender id is which user, each time someone joins or leaves it (GRYT-1830). */
    onAudioSenders?: (senders: Map<number, string>) => void;
    /** Whether anyone in the room is off the own transport and still needs WebRTC audio (GRYT-1853). */
    onWebRTCAudioWanted?: (wanted: boolean) => void;
}
/** The SFU's webrtc_audio_wanted, or null for anything that isn't one. */
export declare function parseWebRTCAudioWanted(data: string): boolean | null;
/** The SFU's audio_senders: decimal sender id to user id. Anything else in it is dropped. */
export declare function parseAudioSenders(data: unknown): Map<number, string>;
export interface RoomJoinedInfo {
    /**
     * SFU_CALL_ALONE_TIMEOUT on the SFU we reached, in seconds. Zero means it
     * never ends a call for being one person; null means it did not say.
     */
    callAloneTimeoutSeconds: number | null;
    /** SFU_MAX_INGEST_KBPS: the most this peer should send the SFU, or null for no cap. */
    maxIngestKbps: number | null;
    /** The own voice transport's offer, or null when the SFU has none (GRYT-1818). */
    audioTransport: AudioTransportOffer | null;
}
/**
 * What room_joined carries, for SFUs that carry anything. It used to be a sentence; this
 * parses and falls back rather than switching on a version, so an older SFU gives nulls.
 */
export declare function parseRoomJoined(data: unknown): RoomJoinedInfo;
export declare function connectToSfuWebSocket(sfuUrl: string, joinToken: unknown, refs: SFUConnectionRefs, eSportsModeEnabled?: boolean, options?: SFUConnectionOptions): Promise<WebSocket>;
export {};