code: public static Bitmap onStackBlurClip(Bitmap original, int radius, int parts) {
          Bitmap bitmap = checkSource(original, radius);
          if (parts < 2 || parts > 12) {
              throw new RuntimeException("Blur bitmap parts must >= 2 and <=12.");
          }
  
          if (original.getHeight() / parts < radius + radius) {
              throw new RuntimeException("Blur bitmap height/partsCount must > radius+radius values.");
          }
  
          //Jni BitMap Blur
          nativeStackBlurBitmapClip(bitmap, radius, parts);
  
          return (bitmap);
      }
docs: StackBlur By Jni Bitmap
  in this we will cut the source bitmap to some parts.
  We'll deal(blur) with it one by one. This will reduce the memory consumption.
  
  @param original Original Image
  @param radius   Blur radius
  @param parts    Blur cut parts count
  @return Image Bitmap