export interface MediaTextTrack {
    id: string;
    label: string;
    language: string;
    kind: string;
    mode: string;
}
export interface MediaError {
    code: number;
    message: string;
}
export interface MediaState {
    paused: boolean;
    ended: boolean;
    waiting: boolean;
    seeking: boolean;
    /** readyState ≥ HAVE_CURRENT_DATA */
    ready: boolean;
    currentTime: number;
    duration: number;
    buffered: [number, number][];
    volume: number;
    muted: boolean;
    playbackRate: number;
    pictureInPicture: boolean;
    textTracks: MediaTextTrack[];
    error: MediaError | null;
    tone: 'light' | 'dark' | undefined;
}
export declare const SERVER_SNAPSHOT: MediaState;
/** Every HTMLMediaElement event the store listens to (PRD-SURF §4.6 plus the
 * readiness events that move `ready`/`waiting`). Exported for the event-matrix
 * test only; not part of the ./media barrel. */
export declare const MEDIA_EVENTS: readonly ["play", "playing", "pause", "ended", "waiting", "seeking", "seeked", "timeupdate", "durationchange", "progress", "volumechange", "ratechange", "error", "loadedmetadata", "loadeddata", "canplay", "canplaythrough", "emptied", "enterpictureinpicture", "leavepictureinpicture"];
/** TextTrackList events: tracks added/removed, or a track's mode changed. */
export declare const TEXT_TRACK_EVENTS: readonly ["addtrack", "removetrack", "change"];
interface Store {
    state: MediaState;
    listeners: Set<() => void>;
    abort: AbortController;
    lastPublish: number;
    timer: ReturnType<typeof setTimeout> | null;
}
export declare function ensureStore(el: HTMLMediaElement, snapshotHz: number): Store;
/** The element's single AbortSignal (creating its store if needed). Every
 * listener the ./media hook adds to the element must carry it (REQ-SURF-133). */
export declare function getSignal(el: HTMLMediaElement, snapshotHz: number): AbortSignal;
export declare function subscribe(el: HTMLMediaElement, cb: () => void, snapshotHz: number): () => void;
export declare function getSnapshot(el: HTMLMediaElement, snapshotHz: number): MediaState;
export declare function getServerSnapshot(): MediaState;
export declare function destroyStore(el: HTMLMediaElement): void;
export declare function setError(el: HTMLMediaElement, error: MediaError | null): void;
export declare function setTone(el: HTMLMediaElement, tone: MediaState['tone']): void;
export {};
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