import type { WebGPURenderOptions } from "./WebGPURender.ts";
import WebGPURender from "./WebGPURender.ts";
import { type AVFrame } from "@libmedia/avutil";
export default class WebGPUExternalRender extends WebGPURender {
    private hasAlpha;
    constructor(canvas: HTMLCanvasElement | OffscreenCanvas, options: WebGPURenderOptions);
    private generateFragmentSource;
    private checkFrame;
    protected generateBindGroup(): void;
    render(frame: VideoFrame, alpha?: VideoFrame): void;
    static isSupport(frame: pointer<AVFrame> | VideoFrame | ImageBitmap): boolean;
}