db_instantiator.py

来自「这是用python语言写的一个数字广播的信号处理工具包。利用它」· Python 代码 · 共 32 行

#
# Copyright 2005 Free Software Foundation, Inc.
# 
# This file is part of GNU Radio
# 
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# 
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
# 

_instantiator_map = {}

def add(dbid, instantiator):
    _instantiator_map[dbid] = instantiator

def instantiate(usrp, which):
    dbid = usrp.daughterboard_id(which)
    if _instantiator_map.has_key(dbid):
        return _instantiator_map[dbid](usrp, which)
    raise ValueError, "No class defined to handle daughterboard (dbid = %d)" % (dbid,)