code: def encode(self, bufsize):
      palette_data = self._write_palette()
  
      offset = 20 + 16 * 4 * 2 + len(palette_data)
      data = struct.pack("<16I", offset, *((0,) * 15))
  
      w, h = self.im.size
      data += struct.pack("<16I", w * h, *((0,) * 15))
  
      data += palette_data
  
      for y in range(h):
          for x in range(w):
              data += struct.pack("<B", self.im.getpixel((x, y)))
  
      return len(data), 0, data
  
imports: import os
  import struct
  from enum import IntEnum
  from io import BytesIO
  from .None import Image, ImageFile
label_desc: Use image node_id 2 for calling the BLPEncoder obj's underlying member method code with example usage: obj.encode(bufsize) and returns: len,  int,  data