export declare type HlsLevel = {
    height?: number;
    url?: string | string[];
};
export declare type HlsManifestParsedData = {
    levels?: HlsLevel[];
};
export declare type HlsLevelSwitchedData = {
    level?: number;
};
export declare type HlsInstance = {
    startLevel: number;
    currentLevel: number;
    liveSyncPosition?: number | null;
    loadSource: (source: string) => void;
    startLoad: () => void;
    destroy: () => void;
    attachMedia: (media: HTMLMediaElement) => void;
    on: (event: string, callback: (event: string, data: HlsManifestParsedData & HlsLevelSwitchedData) => void) => void;
};
export declare type HlsConstructorLike = {
    new (): HlsInstance;
    isSupported: () => boolean;
    Events: {
        MANIFEST_PARSED: string;
        LEVEL_SWITCHED: string;
    };
};
export declare const HLS_AUTO_LEVEL = -1;
export declare const AUTO_QUALITY_STALL_WINDOW_MS = 10000;
export declare const AUTO_QUALITY_STALL_LIMIT = 1;
export declare const AUTO_QUALITY_LONG_STALL_MS = 1500;
export declare const AUTO_QUALITY_SWITCH_COOLDOWN_MS = 5000;
export declare const AUTO_QUALITY_SWITCH_GRACE_MS = 2000;
export declare const AUTO_QUALITY_UPGRADE_BUFFER_SECONDS = 8;
export declare const AUTO_QUALITY_UPGRADE_HEALTHY_MS = 8000;
export declare const AUTO_QUALITY_CHECK_INTERVAL_MS = 1000;
/**
 * Tuning knobs for the custom auto-quality monitor. This monitor only runs
 * when hls.js ABR is not in charge, i.e. when the `source` prop is a
 * user-provided `Source[]` profile list (mp4 or per-profile m3u8 URLs).
 * For a single master m3u8 URL, hls.js handles adaptive switching natively
 * and this config is ignored.
 *
 * All fields are optional when passed through the `autoQualityConfig` prop;
 * missing fields fall back to DEFAULT_AUTO_QUALITY_CONFIG.
 */
export interface AutoQualityConfig {
    /** Sliding window (ms) in which stalls are counted. */
    stallWindowMs: number;
    /** Number of stalls inside the window that triggers a downgrade. */
    stallLimit: number;
    /** A single stall lasting longer than this (ms) triggers a downgrade. */
    longStallMs: number;
    /** Minimum time (ms) between two automatic quality switches. */
    switchCooldownMs: number;
    /** Stalls occurring within this time (ms) after a switch are ignored. */
    switchGraceMs: number;
    /** Buffered seconds ahead of playback required before an upgrade. */
    upgradeBufferSeconds: number;
    /** Time (ms) without any stall required before an upgrade. */
    upgradeHealthyMs: number;
    /** How often (ms) the monitor evaluates an upgrade opportunity. */
    checkIntervalMs: number;
}
export declare const DEFAULT_AUTO_QUALITY_CONFIG: AutoQualityConfig;
export declare const resolveAutoQualityConfig: (config?: Partial<AutoQualityConfig> | undefined) => AutoQualityConfig;
export declare const getBufferedAhead: (videoElement: HTMLVideoElement) => number;
export declare const LIVE_EDGE_OFFSET_SECONDS = 0.5;
export declare const LIVE_EDGE_CLICKABLE_THRESHOLD_SECONDS = 2;
export declare type NormalizedSkipSegment = {
    start: number;
    end: number;
    label: string;
};
export declare const getSeekableLivePosition: (videoElement: HTMLVideoElement) => number | null;
export declare const getLivePosition: (videoElement: HTMLVideoElement, hls?: HlsInstance | null | undefined) => number | null;
export declare const normalizeSkipIntro: (startIntro?: number | undefined, endIntro?: number | undefined) => NormalizedSkipSegment | null;
export declare const normalizeSkipOutro: (startOutro?: number | undefined, endOutro?: number | undefined) => NormalizedSkipSegment | null;
export declare const isSkipSegmentActive: (segment: NormalizedSkipSegment | null, currentTime: number) => boolean;