3
# Copyright 2006,2007 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, src, dst, port, pkt_size, sample_rate):
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, src, 0, dst, port, pkt_size)
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("", "--src-name", type="string", default="localhost",
46
help="local host name (domain name or IP address)")
47
parser.add_option("", "--dst-name", type="string", default="localhost",
48
help="Remote host name (domain name or IP address")
49
parser.add_option("", "--dst-port", type="int", default=65500,
50
help="port value to connect to")
51
parser.add_option("", "--packet-size", type="int", default=1472,
53
parser.add_option("-r", "--sample-rate", type="int", default=8000,
54
help="audio signal sample rate [default=%default]")
55
(options, args) = parser.parse_args()
60
# Create an instance of a hierarchical block
61
top_block = dial_tone_source(options.src_name, options.dst_name, options.dst_port,
62
options.packet_size, options.sample_rate)
67
except KeyboardInterrupt: