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#!/usr/bin/env python
#
# Copyright 2006,2007,2010 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 blocks
from argparse import ArgumentParser
import sys
try:
from gnuradio import audio
except ImportError:
sys.stderr.write("Failed to import gnuradio.audio. Make sure gr-audio component is installed.\n")
sys.exit(1)
class audio_sink(gr.top_block):
def __init__(self, host, port, pkt_size, sample_rate, eof):
gr.top_block.__init__(self, "audio_sink")
src = blocks.udp_source(gr.sizeof_float, host, port, pkt_size, eof=eof)
dst = audio.sink(sample_rate)
self.connect(src, dst)
if __name__ == '__main__':
parser = ArgumentParser()
parser.add_argument("--host", default="0.0.0.0",
help="local host name (domain name or IP address)")
parser.add_argument("--port", type=int, default=65500,
help="port value to listen to for connection")
parser.add_argument("--packet-size", type=int, default=1472,
help="packet size.")
parser.add_argument("-r", "--sample-rate", type=int, default=32000,
help="audio signal sample rate [default=%(default)r]")
parser.add_argument("--no-eof", action="store_true", default=False,
help="don't send EOF on disconnect")
args = parser.parse_args()
# Create an instance of a hierarchical block
top_block = audio_sink(args.host, args.port,
args.packet_size, args.sample_rate,
not args.no_eof)
try:
# Run forever
top_block.run()
except KeyboardInterrupt:
# Ctrl-C exits
pass
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