code: def stream_create_default_file_stream(fname, isa_read_stream):
      
      ARGTYPES = [ctypes.c_char_p, ctypes.c_int32]
      OPENJP2.opj_stream_create_default_file_stream.argtypes = ARGTYPES
      OPENJP2.opj_stream_create_default_file_stream.restype = STREAM_TYPE_P
      read_stream = 1 if isa_read_stream else 0
      file_argument = ctypes.c_char_p(fname.encode())
      stream = OPENJP2.opj_stream_create_default_file_stream(file_argument,
                                                             read_stream)
      return stream
docs: Wraps openjp2 library function opj_stream_create_default_vile_stream.
  
      Sets the stream to be a file stream.  This function is only valid for the
      2.1 version of the openjp2 library.
  
      Parameters
      ----------
      fname : str
          Specifies a file.
      isa_read_stream:  bool
          True (read) or False (write)
  
      Returns
      -------
      stream : stream_t
          An OpenJPEG file stream.