import type { GlyphId, int16, uint16 } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
/**
 * Standard Bitmap Graphics table (sbix)
 * Apple's bitmap/PNG glyph table for color emoji and bitmap fonts
 */
export interface SbixTable {
    version: uint16;
    flags: uint16;
    strikes: SbixStrike[];
}
/**
 * Strike (bitmap size) in sbix
 */
export interface SbixStrike {
    ppem: uint16;
    ppi: uint16;
    glyphData: Map<GlyphId, SbixGlyph>;
}
/**
 * Glyph data in sbix
 */
export interface SbixGlyph {
    originOffsetX: int16;
    originOffsetY: int16;
    graphicType: string;
    data: Uint8Array;
}
/**
 * Common graphic types in sbix
 */
export declare const SbixGraphicType: {
    readonly PNG: "png ";
    readonly JPG: "jpg ";
    readonly TIFF: "tiff";
    readonly PDF: "pdf ";
    readonly MASK: "mask";
    readonly DUPE: "dupe";
};
/**
 * Parse sbix table
 */
export declare function parseSbix(reader: Reader, numGlyphs: number): SbixTable;
/**
 * Get glyph bitmap for a specific ppem
 * Returns the best matching strike
 */
export declare function getGlyphBitmap(sbix: SbixTable, glyphId: GlyphId, ppem: number): SbixGlyph | null;
/**
 * Get exact ppem strike
 */
export declare function getStrikeForPpem(sbix: SbixTable, ppem: number): SbixStrike | null;
/**
 * Get all available ppem sizes
 */
export declare function getAvailablePpemSizes(sbix: SbixTable): number[];
/**
 * Check if glyph has bitmap data
 */
export declare function hasGlyphBitmap(sbix: SbixTable, glyphId: GlyphId, ppem?: number): boolean;
/**
 * Resolve dupe graphic type
 * Returns the actual glyph data for duplicates
 */
export declare function resolveDupeGlyph(sbix: SbixTable, strike: SbixStrike, glyph: SbixGlyph): SbixGlyph | null;