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#!/usr/bin/env python2
def receive_dabplus(frequency=220.352e6, rf_gain=25, if_gain=0, bb_gain=0, ppm=80, audio_sample_rate=48000, dab_bit_rate=64, dab_address=304, dab_subch_size=64, dab_protect_level=1, use_zeromq=False, dabplus=True, server="tcp://127.0.0.1:10444", server_control="tcp://127.0.0.1:10445", from_file=None, from_file_repeat=False, skip_xrun_monitor=False):
from gnuradio import gr, blocks, audio
if use_zeromq:
from gnuradio import zeromq
import time
import osmosdr
import gnuradio.dab as grdab
samp_rate = samp_rate = 2048000
print("Setting frequency: %0.3f MHz" % (frequency/1e6))
print("Setting RF gain to: %d" % rf_gain)
print("Setting Frequency error (ppm) to: %d" % ppm)
fg = gr.top_block()
if from_file != None:
file_input = blocks.file_source(gr.sizeof_gr_complex, from_file, from_file_repeat)
if skip_xrun_monitor:
src = file_input
else:
fthrottle = blocks.throttle(gr.sizeof_gr_complex, samp_rate)
fg.connect(file_input, fthrottle)
src = fthrottle
print("Run from file %s" % from_file)
elif not use_zeromq:
osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + '' )
osmosdr_source_0.set_sample_rate(samp_rate)
osmosdr_source_0.set_center_freq(frequency, 0)
osmosdr_source_0.set_freq_corr(0, 0)
osmosdr_source_0.set_dc_offset_mode(0, 0)
osmosdr_source_0.set_iq_balance_mode(0, 0)
osmosdr_source_0.set_gain_mode(False, 0)
osmosdr_source_0.set_gain(rf_gain, 0)
osmosdr_source_0.set_if_gain(if_gain, 0)
osmosdr_source_0.set_bb_gain(bb_gain, 0)
osmosdr_source_0.set_antenna('RX2', 0)
osmosdr_source_0.set_bandwidth(2000000, 0)
src = osmosdr_source_0
else:
zeromq_source = zeromq.sub_source(gr.sizeof_gr_complex, 1, server, 100, False, -1)
rpc_mgr_server = zeromq.rpc_manager()
rpc_mgr_server.set_request_socket(server_control)
rpc_mgr_server.request("set_sample_rate",[samp_rate])
rpc_mgr_server.request("set_rf_gain",[rf_gain])
rpc_mgr_server.request("set_if_gain",[if_gain])
rpc_mgr_server.request("set_bb_gain",[bb_gain])
rpc_mgr_server.request("set_ppm",[0]) # Not using hardware correction since it behaves differently on different hardware
rpc_mgr_server.request("set_frequency",[frequency])
time.sleep(0.7)
src = zeromq_source
sample_rate_correction_factor = 1 + float(ppm)*1e-6
dab_ofdm_demod_0 = grdab.ofdm_demod(
grdab.parameters.dab_parameters(
mode=1,
sample_rate=samp_rate,
verbose=False
),
grdab.parameters.receiver_parameters(
mode=1,
softbits=True,
input_fft_filter=True,
autocorrect_sample_rate=False,
sample_rate_correction_factor=sample_rate_correction_factor,
always_include_resample=True,
verbose=False,
correct_ffe=True,
equalize_magnitude=True
)
)
if dabplus:
decoder = grdab.dabplus_audio_decoder_ff(grdab.parameters.dab_parameters(mode=1, sample_rate=samp_rate, verbose=False), dab_bit_rate, dab_address, dab_subch_size, dab_protect_level, True)
else:
decoder = grdab.dab_audio_decoder_ff(grdab.parameters.dab_parameters(mode=1, sample_rate=samp_rate, verbose=False), dab_bit_rate, dab_address, dab_subch_size, dab_protect_level, True)
xrun_monitor = grdab.xrun_monitor_cc(100000)
f2c = blocks.float_to_complex()
c2f = blocks.complex_to_float()
audio_sink_0 = audio.sink(audio_sample_rate, '', True)
fg.connect(src, dab_ofdm_demod_0, decoder)
fg.connect((decoder, 0), (f2c, 0))
fg.connect((decoder, 1), (f2c, 1))
if skip_xrun_monitor:
fg.connect(f2c, c2f)
else:
fg.connect(f2c, xrun_monitor)
fg.connect(xrun_monitor, c2f)
fg.connect((c2f, 0), (audio_sink_0, 0))
fg.connect((c2f, 1), (audio_sink_0, 1))
if from_file != None and from_file_repeat == False and skip_xrun_monitor:
fg.run()
else:
fg.start()
input("Running..")
fg.stop()
#new = grdab.dabplus_audio_decoder_ff(grdab.parameters.dab_parameters(mode=1, sample_rate=samp_rate, verbose=False), 64, 304, 64, 1, True)
#newaudio = audio.sink(44100, '', True)
#fg.wait()
#xrun_monitor.stop_until_tag()
#fg.disconnect(src, dab_ofdm_demod_0, decoder)
#fg.disconnect((decoder, 0), (f2c, 0))
#fg.disconnect((decoder, 1), (f2c, 1))
#fg.disconnect((c2f, 0), (audio_sink_0, 0))
#fg.disconnect((c2f, 1), (audio_sink_0, 1))
#decoder = new
#audio_sink_0 = newaudio
#fg.connect(src, dab_ofdm_demod_0, decoder)
#fg.connect((decoder, 0), (f2c, 0))
#fg.connect((decoder, 1), (f2c, 1))
#fg.connect((c2f, 0), (audio_sink_0, 0))
#fg.connect((c2f, 1), (audio_sink_0, 1))
#fg.start()
#raw_input("Running..")
#fg.stop()
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