3 # Copyright 2004,2007 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 usage="%prog: [options] output_filename"
34 parser = OptionParser(option_class=eng_option, usage=usage)
35 parser.add_option("-I", "--audio-input", type="string", default="",
36 help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
37 parser.add_option("-r", "--sample-rate", type="eng_float", default=48000,
38 help="set sample rate to RATE (48000)")
39 parser.add_option("-N", "--nsamples", type="eng_float", default=None,
40 help="number of samples to collect [default=+inf]")
42 (options, args) = parser.parse_args ()
48 sample_rate = int(options.sample_rate)
49 src = audio.source (sample_rate, options.audio_input)
50 dst = gr.file_sink (gr.sizeof_float, filename)
52 if options.nsamples is None:
53 self.connect((src, 0), dst)
55 head = gr.head(gr.sizeof_float, int(options.nsamples))
56 self.connect((src, 0), head, dst)
59 if __name__ == '__main__':
62 except KeyboardInterrupt: