3 # Copyright 2004,2005,2007 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 import audio
25 from gnuradio.eng_option import eng_option
26 from optparse import OptionParser
28 class my_top_block(gr.top_block):
31 gr.top_block.__init__(self)
33 parser = OptionParser(option_class=eng_option)
34 parser.add_option("-I", "--audio-input", type="string", default="",
35 help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
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 src = audio.source (sample_rate, options.audio_input)
47 dst = audio.sink (sample_rate, options.audio_output)
49 # Determine the maximum number of outputs on the source and
50 # maximum number of inputs on the sink, then connect together
51 # the most channels we can without overlap
52 nchan = min (src.output_signature().max_streams(),
53 dst.input_signature().max_streams())
55 for i in range (nchan):
56 self.connect ((src, i), (dst, i))
59 if __name__ == '__main__':
62 except KeyboardInterrupt: