code: def decode(self, buffer):
      try:
          self.fd.seek(0)
          self.magic = self.fd.read(4)
          self._read_blp_header()
          self._load()
      except struct.error as e:
          raise OSError("Truncated Blp file") from e
      return 0, 0
  
imports: import struct
  from io import BytesIO
  from .None import Image, ImageFile
label_desc: Use image node_id 1 for calling the _BLPBaseDecoder obj's underlying member method code with example usage: obj.decode(buffer) and returns: int,  int