/**
 * Copyright (c) Double Symmetry GmbH
 * Commercial use requires a license. See https://rntp.dev/pricing
 */
import { Event } from '../events';
import type { RemoteControlConfig } from '../interfaces/PlayerConfig';
import { type ResolvedMediaItem } from './engines/AudioEngine';
export interface MediaSessionActions {
    play(): void;
    pause(): void;
    stop(): void;
    next(): void;
    previous(): void;
    seekTo(position: number): void;
    seekBy(offset: number): void;
    emit(event: Event, payload: unknown): void;
}
type SessionLike = Pick<MediaSession, 'setActionHandler'> & Partial<Pick<MediaSession, 'setPositionState'>> & {
    metadata: unknown;
    playbackState: string;
};
/**
 * Bridges setCommands/metadata onto the browser MediaSession API: media keys,
 * lock-screen and notification controls, now-playing widgets. Feature-detected;
 * a silent no-op where the API is missing.
 */
export declare class MediaSessionController {
    private actions;
    private session;
    private lastCommands;
    private lastItem;
    constructor(actions: MediaSessionActions, session?: SessionLike | null);
    setCommands(config: RemoteControlConfig): void;
    updateMetadata(item: ResolvedMediaItem | null): void;
    updatePlaybackState(state: 'none' | 'paused' | 'playing'): void;
    updatePositionState(p: {
        duration: number;
        position: number;
        playbackRate: number;
    }): void;
    /**
     * iOS Safari only respects handlers/metadata set after audio has actually
     * started — re-apply the latest config on the first 'playing' of a session.
     */
    reassert(): void;
    destroy(): void;
    private setHandler;
}
export {};
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