3 # Copyright 2006,2007,2010 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 3, 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
24 from gnuradio.eng_option import eng_option
25 from optparse import OptionParser
27 class dial_tone_source(gr.top_block):
28 def __init__(self, host, port, pkt_size, sample_rate, eof):
29 gr.top_block.__init__(self, "dial_tone_source")
32 src0 = gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE, 350, amplitude)
33 src1 = gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE, 440, amplitude)
36 # Throttle needed here to account for the other side's audio card sampling rate
37 thr = gr.throttle(gr.sizeof_float, sample_rate)
38 sink = gr.udp_sink(gr.sizeof_float, host, port, pkt_size, eof=eof)
39 self.connect(src0, (add, 0))
40 self.connect(src1, (add, 1))
41 self.connect(add, thr, sink)
43 if __name__ == '__main__':
44 parser = OptionParser(option_class=eng_option)
45 parser.add_option("", "--host", type="string", default="localhost",
46 help="Remote host name (domain name or IP address")
47 parser.add_option("", "--port", type="int", default=65500,
48 help="port number to connect to")
49 parser.add_option("", "--packet-size", type="int", default=1472,
51 parser.add_option("-r", "--sample-rate", type="int", default=8000,
52 help="audio signal sample rate [default=%default]")
53 parser.add_option("", "--no-eof", action="store_true", default=False,
54 help="don't send EOF on disconnect")
55 (options, args) = parser.parse_args()
60 # Create an instance of a hierarchical block
61 top_block = dial_tone_source(options.host, options.port,
62 options.packet_size, options.sample_rate,
68 except KeyboardInterrupt: