344 lines
13 KiB
Python
Executable File
344 lines
13 KiB
Python
Executable File
#!/usr/bin/env python3
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#################################################################################
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#
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# Multiprotocol Digital Voice TX (C) Copyright 2017, 2018, 2019, 2020 Max H. Parke KA1RBI
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#
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# This file is part of OP25
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#
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# This 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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# This software 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 this software; 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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"""
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Transmit M simultaneous RF channels via N devices
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"""
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import sys
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import os
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import math
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import json
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from gnuradio import gr, audio, eng_notation
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from gnuradio import filter, blocks, analog, digital, fft
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from gnuradio.eng_option import eng_option
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from optparse import OptionParser
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import osmosdr
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import op25
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import op25_repeater
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from math import pi
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from op25_c4fm_mod import p25_mod_bf
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_def_symbol_rate = 4800
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_def_bt = 0.5
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def byteify(input): # thx so
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if sys.version[0] != '2': # hack, must be a better way
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return input
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if isinstance(input, dict):
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return {byteify(key): byteify(value)
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for key, value in input.iteritems()}
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elif isinstance(input, list):
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return [byteify(element) for element in input]
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elif isinstance(input, unicode):
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return input.encode('utf-8')
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else:
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return input
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class pipeline_sb(gr.hier_block2):
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def __init__(self, protocol=None, config_file=None, gain_adjust=None, verbose=0, fullrate_mode=False, alt_input=None):
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gr.hier_block2.__init__(self, "dv_encoder",
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gr.io_signature(1, 1, gr.sizeof_short), # Input signature
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gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
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if protocol == 'dmr':
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assert config_file
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ENCODER = op25_repeater.ambe_encoder_sb(verbose)
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ENCODER2 = op25_repeater.ambe_encoder_sb(verbose)
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ENCODER2.set_gain_adjust(gain_adjust)
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DMR = op25_repeater.dmr_bs_tx_bb(verbose, config_file)
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self.connect(self, ENCODER, (DMR, 0))
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if not alt_input:
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alt_input = self
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self.connect(alt_input, ENCODER2, (DMR, 1))
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elif protocol == 'dstar':
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assert config_file
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ENCODER = op25_repeater.dstar_tx_sb(verbose, config_file)
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elif protocol == 'p25':
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ENCODER = op25_repeater.vocoder(True, # 0=Decode,True=Encode
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False, # Verbose flag
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0, # flex amount
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"", # udp ip address
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0, # udp port
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False) # dump raw u vectors
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elif protocol == 'ysf':
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assert config_file
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ENCODER = op25_repeater.ysf_tx_sb(verbose, config_file, fullrate_mode)
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elif protocol.startswith('nxdn'):
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assert config_file
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ENCODER = op25_repeater.nxdn_tx_sb(verbose, config_file, protocol == 'nxdn96')
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ENCODER.set_gain_adjust(gain_adjust)
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if protocol == 'dmr':
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self.connect(DMR, self)
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else:
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self.connect(self, ENCODER, self)
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class mod_pipeline_bc(gr.hier_block2):
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def __init__(self, protocol=None, mod_adjust=None, output_gain=None, if_freq=0, if_rate=0, verbose=0, sample_rate=0, bt=0):
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from dv_tx import RC_FILTER
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gr.hier_block2.__init__(self, "dv_modulator",
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gr.io_signature(1, 1, gr.sizeof_char), # Input signature
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gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
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MOD = p25_mod_bf(output_sample_rate = sample_rate, dstar = (protocol == 'dstar'), bt = bt, rc = RC_FILTER[protocol])
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AMP = blocks.multiply_const_ff(output_gain)
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max_dev = 12.5e3
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k = 2 * math.pi * max_dev / if_rate
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FM_MOD = analog.frequency_modulator_fc (k * mod_adjust)
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INTERP = filter.rational_resampler_fff(if_rate // sample_rate, 1)
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MIXER = blocks.multiply_cc()
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LO = analog.sig_source_c(if_rate, analog.GR_SIN_WAVE, if_freq, 1.0, 0)
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self.connect(self, MOD, AMP, INTERP, FM_MOD, (MIXER, 0))
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self.connect(LO, (MIXER, 1))
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self.connect(MIXER, self)
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class device(object):
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def __init__(self, config, tb):
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self.name = config['name']
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self.sample_rate = config['rate']
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self.args = config['args']
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self.frequency = config['frequency']
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self.tb = tb
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self.sum = blocks.add_cc()
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self.sum_count = 0
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self.output_throttle = None
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def get_sum_p(self):
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seq = self.sum_count
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self.sum_count += 1
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return (self.sum, seq)
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class channel(object):
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def __init__(self, config, dev, verbosity, msgq = None):
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sys.stderr.write('channel (dev %s): %s\n' % (dev.name, config))
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self.device = dev
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self.name = config['name']
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self.symbol_rate = _def_symbol_rate
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if 'symbol_rate' in config.keys():
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self.symbol_rate = config['symbol_rate']
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self.config = config
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def get_protocol(chan):
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# try to autodetect protocol, return None if failed
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if chan.config['filter_type'].startswith('nxdn'):
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if chan.symbol_rate == 2400:
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return 'nxdn48'
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else:
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return 'nxdn96'
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elif chan.config['filter_type'] == 'rc':
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return 'p25'
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elif chan.config['filter_type'] == 'gmsk':
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return 'dstar'
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elif chan.config['filter_type'] != 'rrc':
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return None
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if 'dmr' in chan.config['name'].lower():
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return 'dmr'
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if 'ysf' in chan.config['name'].lower():
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return 'ysf'
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return None
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def get_source(config, k, audio_source):
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if k not in config.keys():
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return None
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s = config[k]
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if s.startswith('audio:'):
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return audio_source
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elif s.startswith('udp:'): # S16_LE at 8000 rate
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hostinfo = s.split(':')
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hostname = hostinfo[1]
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udp_port = int(hostinfo[2])
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bufsize = 32000
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return blocks.udp_source(gr.sizeof_short, hostname, udp_port, payload_size = bufsize)
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else:
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return blocks.file_source(gr.sizeof_short, s, repeat = True)
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class tx_block(gr.top_block):
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def __init__(self, verbosity, config):
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self.verbosity = verbosity
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gr.top_block.__init__(self)
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self.configure_devices(config['devices'])
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self.configure_channels(config['channels'])
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audio_chans = [chan for chan in self.channels if chan.config['source'].startswith('audio:')]
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if len(audio_chans):
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AUDIO = audio.source(options.alsa_rate, options.audio_input)
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lpf_taps = filter.firdes.low_pass(1.0, options.alsa_rate, 3400.0, 3400 * 0.1, filter.firdes.WIN_HANN)
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audio_rate = 8000
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AUDIO_DECIM = filter.fir_filter_fff (int(options.alsa_rate / audio_rate), lpf_taps)
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AUDIO_SCALE = blocks.multiply_const_ff(32767.0 * options.gain)
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AUDIO_F2S = blocks.float_to_short()
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self.connect(AUDIO, AUDIO_DECIM, AUDIO_SCALE, AUDIO_F2S)
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audio_source = AUDIO_F2S
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else:
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audio_source = None
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from dv_tx import output_gains, gain_adjust, gain_adjust_fullrate, mod_adjust
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for chan in self.channels:
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protocol = get_protocol(chan)
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if protocol is None:
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sys.stderr.write('failed to detect protocol, ignoring: %s\n' % (cfg))
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continue
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cfg = chan.config
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dev = chan.device
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modulator_rate = 24000 ## FIXME
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bt = _def_bt
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if 'bt' in cfg.keys():
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bt = cfg['bt']
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MOD = mod_pipeline_bc(
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protocol = protocol,
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output_gain = output_gains[protocol],
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mod_adjust = mod_adjust[protocol],
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if_freq = cfg['frequency'] - dev.frequency,
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if_rate = dev.sample_rate,
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sample_rate = modulator_rate,
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bt = bt)
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if cfg['source'].startswith('symbols:'):
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filename = cfg['source'].split(':')[1]
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source = blocks.file_source(gr.sizeof_char, filename, repeat=True)
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self.connect(source, MOD, dev.get_sum_p())
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else:
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source = get_source(cfg, 'source', audio_source)
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source2 = get_source(cfg, 'source2', audio_source)
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fullrate_mode = False ### TODO
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if (fullrate_mode and protocol == 'ysf') or protocol == 'p25':
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gain_adj = gain_adjust_fullrate[protocol]
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else:
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gain_adj = gain_adjust[protocol]
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cfgfile = None
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if protocol in 'dmr ysf dstar'.split():
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cfgfile = '%s-cfg.dat' % (protocol)
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elif protocol.startswith('nxdn'):
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cfgfile = 'nxdn-cfg.dat'
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CHANNEL = pipeline_sb(
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protocol = protocol,
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gain_adjust = gain_adj,
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fullrate_mode = fullrate_mode,
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alt_input = source2,
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verbose = self.verbosity,
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config_file = cfgfile)
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self.connect(source, CHANNEL, MOD, dev.get_sum_p())
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for dev in self.devices:
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assert dev.sum_count > 0 # device must have at least one valid channel
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dev.amp = blocks.multiply_const_cc(1.0 / float(dev.sum_count))
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if dev.output_throttle is not None:
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self.connect(dev.sum, dev.amp, dev.output_throttle, dev.u)
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else:
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self.connect(dev.sum, dev.amp, dev.u)
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def configure_devices(self, config):
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self.devices = []
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for cfg in config:
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dev = device(cfg, self)
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if cfg['args'].startswith('udp:'):
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self.setup_udp_output(dev, cfg)
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else:
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self.setup_sdr_output(dev, cfg)
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self.devices.append(dev)
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def find_device(self, chan):
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for dev in self.devices:
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d = abs(chan['frequency'] - dev.frequency)
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nf = dev.sample_rate // 2
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if d + 6250 <= nf:
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return dev
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return None
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def configure_channels(self, config):
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self.channels = []
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for cfg in config:
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dev = self.find_device(cfg)
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if dev is None:
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sys.stderr.write('* * * Frequency %d not within spectrum band of any device - ignoring!\n' % cfg['frequency'])
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continue
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chan = channel(cfg, dev, self.verbosity, msgq=None)
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self.channels.append(chan)
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def setup_udp_output(self, dev, config):
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dev.output_throttle = blocks.throttle(gr.sizeof_gr_complex, config['rate'])
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hostinfo = config['args'].split(':')
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hostname = hostinfo[1]
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udp_port = int(hostinfo[2])
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dev.u = blocks.udp_sink(gr.sizeof_gr_complex, hostname, udp_port)
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def setup_sdr_output(self, dev, config):
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dev.u = osmosdr.sink (config['args'])
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gain_names = dev.u.get_gain_names()
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for name in gain_names:
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range = dev.u.get_gain_range(name)
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print ("gain: name: %s range: start %d stop %d step %d" % (name, range[0].start(), range[0].stop(), range[0].step()))
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if config['gains']:
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for t in config['gains'].split(","):
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name, gain = t.split(":")
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gain = int(gain)
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print ("setting gain %s to %d" % (name, gain))
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dev.u.set_gain(gain, name)
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print ('setting sample rate %d' % config['rate'])
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dev.u.set_sample_rate(config['rate'])
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print ('setting SDR tuning frequency %d' % config['frequency'])
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dev.u.set_center_freq(config['frequency'])
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dev.u.set_freq_corr(config['ppm'])
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class tx_main(object):
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def __init__(self):
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parser = OptionParser(option_class=eng_option)
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parser.add_option("-c", "--config-file", type="string", default=None, help="specify config file name")
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parser.add_option("-v", "--verbosity", type="int", default=0, help="additional output")
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parser.add_option("-p", "--pause", action="store_true", default=False, help="block on startup")
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(options, args) = parser.parse_args()
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# wait for gdb
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if options.pause:
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print ('Ready for GDB to attach (pid = %d)' % (os.getpid(),))
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raw_input("Press 'Enter' to continue...")
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if options.config_file == '-':
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config = json.loads(sys.stdin.read())
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else:
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config = json.loads(open(options.config_file).read())
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self.tb = tx_block(options.verbosity, config = byteify(config))
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def run(self):
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try:
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self.tb.run()
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except KeyboardInterrupt:
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self.tb.stop()
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if __name__ == "__main__":
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print ('Multiprotocol Digital Voice TX (C) Copyright 2017-2020 Max H. Parke KA1RBI')
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tx = tx_main()
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tx.run()
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