import { getImgEle, getCanvas, getDomWH, setDomWH } from "../img-utils";

export interface IVideoConf {
  /** 摄像头 默认为前置摄像头 user */
  facingMode?: "user" | "environment";
  /** 视频宽度 */
  width?: number;
  /** 视频高度 */
  height?: number;
  /** 视频 top */
  top?: number;
  /** 视频 left */
  left?: number;
}

export abstract class CameraPreviewBase {
  constructor(params: Object) {}
  abstract start(): Promise<void>;
  abstract getSnap(): Promise<HTMLCanvasElement>;
  abstract close(): void;
  getImgEle = getImgEle;
  getCanvas = getCanvas;
  getDomWH = getDomWH;
  setDomWH = setDomWH;
}

export default CameraPreviewBase;