3 # Copyright 2006 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr, audio
24 from gnuradio.eng_option import eng_option
25 from optparse import OptionParser
27 class dial_tone_sink(gr.hier_block2):
28 def __init__(self, local_ipaddress, port, mtu, sample_rate):
29 gr.hier_block2.__init__(self,
30 "dial_tone_sink", # Block type
31 gr.io_signature(0,0,0), # Input signature
32 gr.io_signature(0,0,0)) # Output signature
35 self.define_component("src", gr.udp_source(gr.sizeof_float,
36 local_ipaddress, port,
38 self.define_component("dst", audio.sink(sample_rate))
40 self.connect("src", 0, "dst", 0)
42 if __name__ == '__main__':
43 parser = OptionParser(option_class=eng_option)
44 parser.add_option("", "--local-ipaddr", type="string", default="127.0.0.1",
45 help="local IP address")
46 parser.add_option("", "--local-port", type="int", default=65500,
47 help="port value to listen to for connection")
48 parser.add_option("", "--mtu", type="int", default=540,
50 parser.add_option("-r", "--sample-rate", type="int", default=8000,
51 help="audio signal sample rate [default=%default]")
52 (options, args) = parser.parse_args()
57 # Create an instance of a hierarchical block
58 top_block = dial_tone_sink(options.local_ipaddr, options.local_port,
59 options.mtu, options.sample_rate)
61 # Create an instance of a runtime, passing it the top block
62 runtime = gr.runtime(top_block)
67 except KeyboardInterrupt: