HarmonyOS 鸿蒙Next ets 目录下的图片怎么转pixelmap

这是获取rawfile下图像的代码

const resourceMgr : resourceManager.ResourceManager = entryContext.resourceManager;
let fd = resourceMgr.getRawFdSync(imageName)
    let imageSource:image.ImageSource = image.createImageSource(fd);
imageSource.createPixelMap((err: BusinessError, pixelMap: image.PixelMap) => {
      if (err) {
        hilog.error(0x0001,"canvas","加载图像失败,错误码[%{public}d],错误信息[%{public}s]",err.code,err.message);
      } else {
       }
})<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>