dv_tx.py
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#!/usr/bin/env python
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#################################################################################
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#
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# Multiprotocol Digital Voice TX (C) Copyright 2017 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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import sys
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import os
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import math
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from gnuradio import gr, gru, audio, eng_notation
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from gnuradio import filter, blocks, analog, digital
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from gnuradio.eng_option import eng_option
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from optparse import OptionParser
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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 c4fm_taps, transfer_function_dmr, p25_mod_bf
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class my_top_block(gr.top_block):
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"""
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Reads up to two channels of input and generates an output stream (in float format)
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Input may be either from sound card or from files.
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Likewise the output channel may be directed to an audio output or to a file.
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the output audio is suitable for direct application to an FM modulator
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"""
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def __init__(self):
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gr.top_block.__init__(self)
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parser = OptionParser(option_class=eng_option)
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parser.add_option("-b", "--bt", type="float", default=0.25, help="specify bt value")
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parser.add_option("-c", "--config-file", type="string", default=None, help="specify the config file name")
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parser.add_option("-f", "--file1", type="string", default=None, help="specify the input file slot 1")
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parser.add_option("-F", "--file2", type="string", default=None, help="specify the input file slot 2 (DMR)")
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parser.add_option("-g", "--gain", type="float", default=1.0, help="input gain")
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parser.add_option("-I", "--audio-input", type="string", default="", help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
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parser.add_option("-O", "--audio-output", type="string", default="default", help="pcm output device name. E.g., hw:0,0 or /dev/dsp")
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parser.add_option("-o", "--output-file", type="string", default=None, help="specify the output file")
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parser.add_option("-p", "--protocol", type="choice", default=None, choices=('dmr', 'dstar', 'p25', 'ysf'), help="specify protocol")
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parser.add_option("-r", "--repeat", action="store_true", default=False, help="input file repeat")
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parser.add_option("-R", "--fullrate-mode", action="store_true", default=False, help="ysf fullrate")
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parser.add_option("-s", "--sample-rate", type="int", default=48000, help="output sample rate")
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parser.add_option("-v", "--verbose", type="int", default=0, help="additional output")
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(options, args) = parser.parse_args()
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max_inputs = 1
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if options.protocol == 'dmr':
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max_inputs = 2
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ENCODER = op25_repeater.ambe_encoder_sb(options.verbose)
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ENCODER2 = op25_repeater.ambe_encoder_sb(options.verbose)
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DMR = op25_repeater.dmr_bs_tx_bb(options.verbose, options.config_file)
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self.connect(ENCODER, (DMR, 0))
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self.connect(ENCODER2, (DMR, 1))
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output_gain = 5.5
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elif options.protocol == 'dstar':
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ENCODER = op25_repeater.dstar_tx_sb(options.verbose, options.config_file)
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output_gain = 0.95
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elif options.protocol == 'p25':
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ENCODER = op25_repeater.vocoder(True, # 0=Decode,True=Encode
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0, # 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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output_gain = 5.5
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elif options.protocol == 'ysf':
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ENCODER = op25_repeater.ysf_tx_sb(options.verbose, options.config_file, options.fullrate_mode)
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output_gain = 5.5
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else:
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print 'protocol [-p] option missing'
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sys.exit(0)
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nfiles = 0
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if options.file1:
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nfiles += 1
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if options.file2 and options.protocol == 'dmr':
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nfiles += 1
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if nfiles < max_inputs:
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AUDIO = audio.source(options.sample_rate, options.audio_input)
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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_SCALE, AUDIO_F2S)
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if options.file1:
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IN1 = blocks.file_source(gr.sizeof_short, options.file1, options.repeat)
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S2F1 = blocks.short_to_float()
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AMP1 = blocks.multiply_const_ff(options.gain)
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F2S1 = blocks.float_to_short()
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self.connect(IN1, S2F1, AMP1, F2S1, ENCODER)
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else:
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self.connect(AUDIO_F2S, ENCODER)
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if options.protocol == 'dmr':
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if options.file2:
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IN2 = blocks.file_source(gr.sizeof_short, options.file2, options.repeat)
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S2F2 = blocks.short_to_float()
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AMP2 = blocks.multiply_const_ff(options.gain)
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F2S2 = blocks.float_to_short()
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self.connect(IN2, S2F2, AMP2, F2S2, ENCODER2)
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else:
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self.connect(AUDIO_F2S, ENCODER2)
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if options.protocol == 'dstar':
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MOD = p25_mod_bf(output_sample_rate = options.sample_rate, dstar = True, bt = options.bt)
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else:
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MOD = p25_mod_bf(output_sample_rate = options.sample_rate, generator=transfer_function_dmr)
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AMP = blocks.multiply_const_ff(output_gain)
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if options.output_file:
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OUT = blocks.file_sink(gr.sizeof_float, options.output_file)
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else:
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OUT = audio.sink(options.sample_rate, options.audio_output)
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if options.protocol == 'dmr':
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self.connect(DMR, MOD)
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else:
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self.connect(ENCODER, MOD)
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self.connect(MOD, AMP, OUT)
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if __name__ == "__main__":
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print 'Multiprotocol Digital Voice TX (C) Copyright 2017 Max H. Parke KA1RBI'
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try:
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my_top_block().run()
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except KeyboardInterrupt:
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tb.stop()
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