diff --git a/python/audio_capture.py b/python/audio_capture.py new file mode 100755 index 0000000..01c46c1 --- /dev/null +++ b/python/audio_capture.py @@ -0,0 +1,68 @@ +#!/usr/bin/env python +# +# Copyright 2004,2007 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr +from gnuradio import audio +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +class my_top_block(gr.top_block): + + def __init__(self): + gr.top_block.__init__(self) + + usage="%prog: [options] output_filename" + parser = OptionParser(option_class=eng_option, usage=usage) + parser.add_option("-I", "--audio-input", type="string", default="", + help="pcm input device name. E.g., hw:0,0 or /dev/dsp") + parser.add_option("-s", "--sample-rate", type="eng_float", default=48000, + help="set sample rate to RATE (48000)") + parser.add_option("-N", "--nsamples", type="eng_float", default=None, + help="number of samples to collect [default=+inf]") + + (options, args) = parser.parse_args () + if len(args) != 2: + parser.print_help() + raise SystemExit, 1 + filename = args[0] + filename2 = args[1] + + sample_rate = int(options.sample_rate) + src = audio.source (sample_rate, options.audio_input) + dst = gr.file_sink (gr.sizeof_float, filename) + dst2 = gr.file_sink (gr.sizeof_float, filename2) + + if options.nsamples is None: + self.connect((src, 0), dst) + self.connect((src, 1), dst2) + else: + head = gr.head(gr.sizeof_float, int(options.nsamples)) + head2 = gr.head(gr.sizeof_float, int(options.nsamples)) + self.connect((src, 0), head, dst) + self.connect((src, 1), head2, dst2) + + +if __name__ == '__main__': + try: + my_top_block().run() + except KeyboardInterrupt: + pass