import type { int16, uint16, uint32 } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
/**
 * Tracking table (trak)
 * Apple Advanced Typography tracking
 */
export interface TrakTable {
    version: number;
    format: uint16;
    horizData: TrackData | null;
    vertData: TrackData | null;
}
/**
 * Track data for one direction
 */
export interface TrackData {
    nTracks: uint16;
    nSizes: uint16;
    sizeTableOffset: uint32;
    trackTable: TrackTableEntry[];
    sizeTable: number[];
}
/**
 * Track table entry
 */
export interface TrackTableEntry {
    track: number;
    nameIndex: uint16;
    offset: uint16;
    perSizeTracking: int16[];
}
/**
 * Parse trak table
 */
export declare function parseTrak(reader: Reader): TrakTable;
/**
 * Get tracking value for a given track and point size
 */
export declare function getTrackingValue(trackData: TrackData, track: number, pointSize: number): number;
/**
 * Apply tracking to advance widths
 */
export declare function applyTracking(trak: TrakTable, advances: number[], pointSize: number, track?: number, vertical?: boolean): void;