code: public static Bitmap onStackBlur(Bitmap original, int radius) {
          Bitmap bitmap = checkSource(original, radius);
  
          // Return this none blur
          if (radius == 1) {
              return bitmap;
          }
  
          //Jni BitMap Blur
          nativeStackBlurBitmap(bitmap, radius);
  
          return (bitmap);
      }
docs: StackBlur By Jni Bitmap
  
  @param original Original Image
  @param radius   Blur radius
  @return Image Bitmap