import { Codec, ContentType, Event, RemoteAudioStream, RemoteDataStream, RemoteStream, RemoteVideoStream, SubscriptionImpl, SubscriptionState, TransportConnectionState, WebRTCStats } from '@skyway-sdk/core';
import { RemoteRoomMember } from '../member/remote/base';
import { RoomPublication } from '../publication';
import { RoomImpl } from '../room/base';
export interface RoomSubscription<T extends RemoteVideoStream | RemoteAudioStream | RemoteDataStream = RemoteStream> {
    readonly id: string;
    readonly contentType: ContentType;
    readonly publication: RoomPublication;
    /**@description [japanese] このSubscriptionにStreamが紐つけられた時に発火する */
    readonly onStreamAttached: Event<void>;
    /**
     * @deprecated
     * @use {@link LocalPerson.onPublicationUnsubscribed} or {@link Channel.onPublicationUnsubscribed}
     * @description [japanese] このSubscriptionがUnsubscribeされた時に発火する
     */
    readonly onCanceled: Event<void>;
    /**
     * @description [japanese] メディア通信の状態が変化した時に発火するイベント
     */
    onConnectionStateChanged: Event<TransportConnectionState>;
    readonly subscriber: RemoteRoomMember;
    /**
     * @description [japanese] subscribeしているStreamの実体。
     * ローカルでSubscribeしているSubscriptionでなければundefinedとなる
     */
    stream?: T;
    codec?: Codec;
    /**
     * @description [japanese] 現在の優先エンコーディング設定
     */
    preferredEncoding?: string;
    state: RoomSubscriptionState;
    /**
     * @deprecated
     * @use {@link LocalPerson.unsubscribe}
     * @description [japanese] unsubscribeする
     */
    cancel: () => Promise<void>;
    /**@description [japanese] 優先して受信するエンコード設定を変更する */
    changePreferredEncoding: (id: string) => void;
    /**
     * @experimental
     * @description [japanese] RemoteStreamの通信の統計情報を取得する
     */
    getStats(): Promise<WebRTCStats>;
    /**
     * @experimental
     * @description [japanese] 試験的なAPIです。今後インターフェースや仕様が変更される可能性があります
     * @description [japanese] 対象のMemberとのRTCPeerConnectionを取得する。RTCPeerConnectionを直接操作すると SDK は正しく動作しなくなる可能性があります。
     */
    getRTCPeerConnection(): RTCPeerConnection | undefined;
    /**
     * @description [japanese] メディア通信の状態を取得
     */
    getConnectionState(): TransportConnectionState;
}
/**@internal */
export declare class RoomSubscriptionImpl<T extends RemoteVideoStream | RemoteAudioStream | RemoteDataStream = RemoteStream> implements RoomSubscription {
    /**@private */
    _subscription: SubscriptionImpl<T>;
    private _room;
    readonly id: string;
    readonly contentType: ContentType;
    readonly publication: RoomPublication;
    readonly subscriber: RemoteRoomMember;
    readonly _context: import("@skyway-sdk/core").SkyWayContext;
    readonly onStreamAttached: Event<void>;
    readonly onCanceled: Event<void>;
    readonly onConnectionStateChanged: Event<TransportConnectionState>;
    constructor(
    /**@private */
    _subscription: SubscriptionImpl<T>, _room: RoomImpl);
    get stream(): T | undefined;
    get state(): SubscriptionState;
    get codec(): Codec | undefined;
    get preferredEncoding(): string | undefined;
    changePreferredEncoding(id: string): void;
    cancel(): Promise<void>;
    toJSON(): {
        id: string;
        contentType: ContentType;
        publication: RoomPublication<import("@skyway-sdk/core").LocalStream>;
        codec: Codec | undefined;
    };
    getStats(): Promise<WebRTCStats>;
    getRTCPeerConnection(): RTCPeerConnection | undefined;
    getConnectionState(): TransportConnectionState;
}
export declare type RoomSubscriptionState = SubscriptionState;
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