Capture from Discriminator Tap
git-svn-id: http://op25.osmocom.org/svn/trunk@159 65a5c917-d112-43f1-993d-58c26a4786be
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#!/usr/bin/env python
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#
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# Copyright 2004,2007 Free Software Foundation, Inc.
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#
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# This file is part of GNU Radio
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#
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# GNU Radio is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# GNU Radio is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GNU Radio; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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from gnuradio import gr
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from gnuradio import audio
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from gnuradio.eng_option import eng_option
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from optparse import OptionParser
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class my_top_block(gr.top_block):
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def __init__(self):
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gr.top_block.__init__(self)
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usage="%prog: [options] output_filename"
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parser = OptionParser(option_class=eng_option, usage=usage)
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parser.add_option("-I", "--audio-input", type="string", default="",
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help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
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parser.add_option("-s", "--sample-rate", type="eng_float", default=48000,
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help="set sample rate to RATE (48000)")
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parser.add_option("-N", "--nsamples", type="eng_float", default=None,
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help="number of samples to collect [default=+inf]")
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(options, args) = parser.parse_args ()
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if len(args) != 2:
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parser.print_help()
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raise SystemExit, 1
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filename = args[0]
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filename2 = args[1]
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sample_rate = int(options.sample_rate)
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src = audio.source (sample_rate, options.audio_input)
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dst = gr.file_sink (gr.sizeof_float, filename)
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dst2 = gr.file_sink (gr.sizeof_float, filename2)
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if options.nsamples is None:
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self.connect((src, 0), dst)
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self.connect((src, 1), dst2)
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else:
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head = gr.head(gr.sizeof_float, int(options.nsamples))
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head2 = gr.head(gr.sizeof_float, int(options.nsamples))
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self.connect((src, 0), head, dst)
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self.connect((src, 1), head2, dst2)
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if __name__ == '__main__':
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try:
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my_top_block().run()
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except KeyboardInterrupt:
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pass
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