import { IMediaStatus } from "../cast";
import { BaseApp } from "./base";
export interface IPlaybackTrackerEvents<TMedia> {
    getCurrentMedia?: () => TMedia | undefined;
    setCurrentMedia?: (media: TMedia | undefined) => void;
    onPlayerPaused?: (currentTimeSeconds: number, media?: TMedia) => Promise<void>;
}
/**
 * Utility for tracking playback events
 */
export declare class PlaybackTracker<TMedia = void> {
    private app;
    private events;
    private attachedMediaSessionId;
    private stopObserving;
    constructor(app: BaseApp, events: IPlaybackTrackerEvents<TMedia>);
    start(): Promise<void>;
    stop(): void;
    protected handleClose(): Promise<void>;
    protected handleMediaStatus(status: IMediaStatus): Promise<void>;
    private onDeviceStatus;
    private onSessionMessage;
    /**
     * event helpers
     */
    private getCurrentMedia;
    private onPlayerPaused;
    private getDevice;
    private joinOrRunNamespace;
    private observeMessages;
}