3 # Copyright 2004,2005 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
26 # must be imported from local directory so that make check
27 # can run before installation
30 class my_graph(gr.flow_graph):
33 gr.flow_graph.__init__(self)
35 parser = OptionParser(option_class=eng_option)
36 parser.add_option("-O", "--audio-output", type="string", default="",
37 help="pcm output device name. E.g., hw:0,0 or /dev/dsp")
38 parser.add_option("-r", "--sample-rate", type="eng_float", default=48000,
39 help="set sample rate to RATE (48000)")
40 (options, args) = parser.parse_args ()
45 sample_rate = int(options.sample_rate)
46 audio_option = options.audio_output
47 src = audio.source (sample_rate, audio_option)
48 src_out_chan = src.output_signature().max_streams()
49 dst = audio.sink (sample_rate, str(src_out_chan))
50 dst_in_chan = dst.input_signature().max_streams()
51 audio_el_size = src.output_signature().sizeof_stream_item(1)
53 enc_code_in_chan = src_out_chan
54 code_generators = [05, 06] #, 03, 04] # , 0, 07]
55 enc_code_out_chan = len (code_generators) / enc_code_in_chan
58 ss_enc = ecc.streams_encode_convolutional (frame_size,
63 for i in range (enc_code_in_chan):
64 self.connect ((src, i), (ss_enc, i))
66 for i in range (enc_code_out_chan):
68 self.connect ((ss_enc, i), ns)
70 if __name__ == '__main__':
73 except KeyboardInterrupt: