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#!/usr/bin/env python
# Copyright (C) 2013 Matthias P. Braendli
# http://mpb.li
#
# This file is part of CRC-DabMux.
#
# CRC-DabMux 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 of the
# License, or (at your option) any later version.
#
# CRC-DabMux 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 CRC-DabMux. If not, see <http://www.gnu.org/licenses/>.
#
#
# Use this script to receive the zmq+tcp://*:8080 output from
# crc-dabmux.
#
# It can then be piped into CRC-DabMod. Thanks to ZeroMQ, the connection
# stays up even when crc-dabmux is killed and restarted. However,
# frame-sync is lost, and UHD Underruns will happen.
# This is python3 code, it will probably not work on python2.
# TODO fix that
import sys
import zmq
RAW_LEN=6144
context = zmq.Context()
sock = context.socket(zmq.SUB)
sock.connect("tcp://localhost:8080")
# set a filter that lets everything through
sock.setsockopt(zmq.SUBSCRIBE, bytes([]))
sys.stderr.write("Entering loop\n")
while True:
data = sock.recv(flags=0, copy=True, track=False)
sys.stdout.buffer.write(data)
sys.stdout.buffer.write(bytes([0x55] * (RAW_LEN - len(data))))
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