/// <reference types="offscreencanvas" />
import type { WebFont } from './core/web-mask';
import type { ctor, EmscriptenGL, Point, Rect, Vector } from './types';
export interface TimeRange {
    start: number;
    end: number;
}
export interface VideoReader {
    prepare: (targetFrame: number) => Promise<boolean>;
    renderToTexture: (GL: EmscriptenGL, textureID: number) => void;
    onDestroy: () => void;
}
export interface VideoDecoderConstructor {
    isIOS: () => boolean;
    new (mp4Data: Uint8Array, width: number, height: number, frameRate: number, staticTimeRanges: TimeRange[]): VideoReader;
}
export interface FontMetrics {
    ascent: number;
    descent: number;
    xHeight: number;
    capHeight: number;
}
export interface ScalerContext {
    fontString: () => string;
    getTextAdvance: (text: string) => number;
    getTextBounds: (text: string) => Rect;
    generateFontMetrics: () => FontMetrics;
    generateImage: (text: string, bounds: Rect) => NativeImage;
}
export interface ScalerContextConstructor {
    isEmoji: (text: string) => boolean;
    new (fontName: string, fontStyle: string, size: number, fauxBold: boolean, fauxItalic: boolean): ScalerContext;
}
export interface WebMask {
    fillPath: (path: Path2D, fillType: ctor) => void;
    fillText: (webFont: WebFont, texts: Vector<string>, positions: Vector<Point>, matrixWasmIns: any) => void;
    strokeText: (webFont: WebFont, stroke: {
        width: number;
        cap: ctor;
        join: ctor;
        miterLimit: number;
    }, texts: Vector<string>, positions: Vector<Point>, matrixWasmIns: any) => void;
    clear: () => void;
    update: (GL: EmscriptenGL) => void;
}
export declare type WebMaskConstructor = new (canvas: HTMLCanvasElement | OffscreenCanvas, width: number, height: number) => WebMask;
export interface NativeImage {
    width: () => number;
    height: () => number;
    upload: (GL: EmscriptenGL) => void;
}
export interface NativeImageConstructor {
    createFromBytes: (bytes: ArrayBuffer) => Promise<NativeImage | null>;
    createFromPath: (path: string) => Promise<NativeImage | null>;
    new (source: TexImageSource): NativeImage;
}