git.gag.com Git - debian/gnuradio/blob - gnuradio-examples/python/hier/networking/dial_tone_source.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2006 Free Software Foundation, Inc.
   4 #
   5 # This file is part of GNU Radio
   6 #
   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)
  10 # any later version.
  11 #
  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.
  16 #
  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.
  21 #
  22
  23 from gnuradio import gr
  24 from gnuradio.eng_option import eng_option
  25 from optparse import OptionParser
  26
  27 class dial_tone_source(gr.hier_block2):
  28     def __init__(self, local_ipaddress, remote_ipaddress, port, mtu, sample_rate):
  29         gr.hier_block2.__init__(self,
  30                                 "dial_tone_source",     # Block type
  31                                 gr.io_signature(0,0,0), # Input signature
  32                                 gr.io_signature(0,0,0)) # Output signature
  33
  34         amplitude = 0.3
  35         self.define_component("src0", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
  36                                                        350, amplitude))
  37         self.define_component("src1", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
  38                                                        440, amplitude))
  39         self.define_component("add", gr.add_ff())
  40
  41         self.define_component("thr", gr.throttle(gr.sizeof_float, sample_rate))
  42         self.define_component("dst",  gr.udp_sink(gr.sizeof_float,
  43                                                   local_ipaddress, 0,
  44                                                   remote_ipaddress, port,
  45                                                   mtu))
  46
  47         self.connect("src0", 0, "add", 0)
  48         self.connect("src1", 0, "add", 1)
  49         self.connect("add", 0, "thr", 0)
  50         self.connect("thr", 0, "dst", 0)
  51
  52 if __name__ == '__main__':
  53     parser = OptionParser(option_class=eng_option)
  54     parser.add_option("", "--local-ipaddr", type="string", default="127.0.0.1",
  55                       help="local IP address")
  56     parser.add_option("", "--remote-ipaddr", type="string", default="127.0.0.1",
  57                       help="Remote IP address")
  58     parser.add_option("", "--remote-port", type="int", default=65500,
  59                       help="port value to connect to")
  60     parser.add_option("", "--mtu", type="int", default=540,
  61                      help="packet size.")
  62     parser.add_option("-r", "--sample-rate", type="int", default=8000,
  63                      help="audio signal sample rate [default=%default]")
  64     (options, args) = parser.parse_args()
  65     if len(args) != 0:
  66         parser.print_help()
  67         raise SystemExit, 1
  68
  69     # Create an instance of a hierarchical block
  70     top_block = dial_tone_source(options.local_ipaddr, options.remote_ipaddr,
  71                                  options.remote_port, options.mtu, options.sample_rate)
  72
  73     # Create an instance of a runtime, passing it the top block
  74     runtime = gr.runtime(top_block)
  75
  76     try:
  77         # Run forever
  78         runtime.run()
  79     except KeyboardInterrupt:
  80         # Ctrl-C exits
  81         pass
  82