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Diffstat (limited to 'gr-digital/examples/narrowband/rx_voice.py')
| -rwxr-xr-x | gr-digital/examples/narrowband/rx_voice.py | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/gr-digital/examples/narrowband/rx_voice.py b/gr-digital/examples/narrowband/rx_voice.py deleted file mode 100755 index 100caff8e..000000000 --- a/gr-digital/examples/narrowband/rx_voice.py +++ /dev/null @@ -1,164 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005,2006,2009,2011 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, blks2, audio, uhd -from gnuradio import eng_notation -from gnuradio.eng_option import eng_option -from optparse import OptionParser - -from gnuradio import digital -from gnuradio import vocoder - -import random -import struct -import sys - -# from current dir -from receive_path import receive_path -from uhd_interface import uhd_receiver - -#import os -#print os.getpid() -#raw_input('Attach and press enter') - - -class audio_tx(gr.hier_block2): - def __init__(self, audio_output_dev): - gr.hier_block2.__init__(self, "audio_tx", - gr.io_signature(0, 0, 0), # Input signature - gr.io_signature(0, 0, 0)) # Output signature - - self.sample_rate = sample_rate = 8000 - self.packet_src = gr.message_source(33) - voice_decoder = vocoder.gsm_fr_decode_ps() - s2f = gr.short_to_float () - sink_scale = gr.multiply_const_ff(1.0/32767.) - audio_sink = audio.sink(sample_rate, audio_output_dev) - self.connect(self.packet_src, voice_decoder, s2f, sink_scale, audio_sink) - - def msgq(self): - return self.packet_src.msgq() - - -class my_top_block(gr.top_block): - def __init__(self, demod_class, rx_callback, options): - gr.top_block.__init__(self) - self.rxpath = receive_path(demod_class, rx_callback, options) - self.audio_tx = audio_tx(options.audio_output) - - if(options.rx_freq is not None): - self.source = uhd_receiver(options.args, options.bitrate, - options.samples_per_symbol, - options.rx_freq, options.rx_gain, - options.antenna, options.verbose) - options.samples_per_symbol = self.source._sps - - audio_rate = self.audio_tx.sample_rate - usrp_rate = self.source.get_sample_rate() - rrate = audio_rate / usrp_rate - self.resampler = blks2.pfb_arb_resampler_ccf(rrate) - - self.connect(self.source, self.resampler, self.rxpath) - - elif(options.from_file is not None): - self.thr = gr.throttle(gr.sizeof_gr_complex, options.bitrate) - self.source = gr.file_source(gr.sizeof_gr_complex, options.from_file) - self.connect(self.source, self.thr, self.rxpath) - - else: - self.thr = gr.throttle(gr.sizeof_gr_complex, 1e6) - self.source = gr.null_source(gr.sizeof_gr_complex) - self.connect(self.source, self.thr, self.rxpath) - - self.connect(self.audio_tx) - -# ///////////////////////////////////////////////////////////////////////////// -# main -# ///////////////////////////////////////////////////////////////////////////// - -global n_rcvd, n_right - -def main(): - global n_rcvd, n_right - - n_rcvd = 0 - n_right = 0 - - def rx_callback(ok, payload): - global n_rcvd, n_right - n_rcvd += 1 - if ok: - n_right += 1 - - tb.audio_tx.msgq().insert_tail(gr.message_from_string(payload)) - - print "ok = %r n_rcvd = %4d n_right = %4d" % ( - ok, n_rcvd, n_right) - - demods = digital.modulation_utils.type_1_demods() - - # Create Options Parser: - parser = OptionParser (option_class=eng_option, conflict_handler="resolve") - expert_grp = parser.add_option_group("Expert") - - parser.add_option("-m", "--modulation", type="choice", choices=demods.keys(), - default='gmsk', - help="Select modulation from: %s [default=%%default]" - % (', '.join(demods.keys()),)) - parser.add_option("-O", "--audio-output", type="string", default="", - help="pcm output device name. E.g., hw:0,0 or /dev/dsp") - parser.add_option("","--from-file", default=None, - help="input file of samples to demod") - receive_path.add_options(parser, expert_grp) - uhd_receiver.add_options(parser) - - for mod in demods.values(): - mod.add_options(expert_grp) - - parser.set_defaults(bitrate=50e3) # override default bitrate default - (options, args) = parser.parse_args () - - if len(args) != 0: - parser.print_help(sys.stderr) - sys.exit(1) - - if options.from_file is None: - if options.rx_freq is None: - sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") - parser.print_help(sys.stderr) - sys.exit(1) - - - # build the graph - tb = my_top_block(demods[options.modulation], rx_callback, options) - - r = gr.enable_realtime_scheduling() - if r != gr.RT_OK: - print "Warning: Failed to enable realtime scheduling." - - tb.run() - -if __name__ == '__main__': - try: - main() - except KeyboardInterrupt: - pass |