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hackrf_ma_twarz.py
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hackrf_ma_twarz.py
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import sys, os, youtube_dl, osmosdr, rds, time, threading, pmt, sox
from gnuradio import analog
from gnuradio import blocks
from gnuradio import digital
from gnuradio import filter
from gnuradio import gr
from gnuradio.filter import firdes
from gnuradio.filter import pfb
DEBUG_FREQ = 89.0
DEBUG_TRANSMITTER = "Warszawa"
CACHE_FILE="cache"
TUNING_TIME = 10
HACKRF_RELEASE_TIME = 2
RDS_TEXT_FRAGMENT = 'radiomaryja'
RF_GAIN = 30
FREQS = {
"Warszawa": 89.0,
"Biala Podlaska" : 87.8,
"Nowy Targ" : 95.5,
"Bialystok / Drawsko Pom." : 104.7,
"Bielsk Podlaski" : 102.0,
"Olkusz / Kedzierzyn Koz." : 104.6,
"Bielsko-Biala / Mragowo" : 88.4,
"Olsztyn / Siedlce losice" : 107.7,
"Bogatynia" : 100.3,
"Opole" : 99.9,
"Brzesko / Wolsztyn" : 98.7,
"Ostroleka / Szczecinek" : 95.0,
"Bydgoszcz / Slupsk" : 88.5,
"Bytow" : 90.4,
"Ostrow Wlkp." : 88.2,
"Chelm / Kluczbork" : 102.8,
"Torun / Krosno / Parczew / Glogow" : 100.6,
"Lublin / Ciechanowiec" : 97.0,
"Kielce / Pelczyce" : 107.2,
"Ciechanow" : 91.8,
"Czersk" : 101.4,
"Piotrkow Tryb." : 95.7,
"Suwalki / Deblin / Ryki" : 107.9,
"Szczecin / Pisz" : 101.6,
"Dolsk / swiecie" : 104.0,
"Plock / Sierpc / Klodzko / Lezajsk" : 106.3,
"Plonsk" : 105.3,
"Elblag" : 104.2,
"Poznan" : 106.8,
"Elk / Przemysl / Konin" : 105.1,
"Przasnysz / Grojec" : 99.8,
"Gdynia / Lubaczow" : 102.3,
"Gdansk / Wroclaw" : 88.9,
"Rabka" : 100.7,
"Gizycko" : 100.2,
"Raciborz / Kalwaria Zebrz." : 94.3,
"Radom" : 94.2,
"Gniezno / Skierniewice" : 95.4,
"Radomsko" : 90.2,
"Gorzow Wlkp." : 98.8,
"Wlodawa / Rosko" : 104.5,
"Rzeszow / Wloclawek" : 100.9,
"Gryfice" : 102.9,
"Siedlce" : 97.8,
"Hrubieszow" : 95.8,
"Ilawa" : 96.9,
"Sieradz / Luban" : 95.2,
"Jastrzebie Zdr." : 102.5,
"Jelenia Gora / Nysa / Ostrow Maz. / Pila / Wysoka Wies" : 100.4,
"Slubice" : 92.3,
"Jemiolow / Kolobrzeg" : 100.0,
"Kalisz" : 105.6,
"Stalowa Wola" : 104.4,
"Stargard Szcz." : 89.4,
"Katowice" : 103.7,
"Starogard Gd." : 87.6,
"Szymbark" : 102.4,
"Swinoujscie" : 87.7,
"Tarnow" : 102.6,
"Koszalin / Walbrzych" : 107.4,
"Tarnobrzeg" : 94.4,
"Koszecin" : 107.0,
"Koscierzyna / Skorzewo" : 96.0,
"Trzcinsko Zdroj" : 103.5,
"Krakow" : 90.6,
"Ustron" : 93.9,
"Krasnik" : 98.0,
"Ustrzyki Dolne" : 94.5,
"Krynica / Wladyslawowo" : 93.1,
"Kudowa Zdroj" : 90.1,
"Wagrowiec" : 88.7,
"Kutno" : 88.3,
"Wejherowo" : 89.7,
"Lodz / Kwidzyn" : 87.9,
"Wielun" : 105.2,
"Wyszkow / Lebork" : 92.7,
"Lidzbark Warm." : 106.2,
"Lipiany" : 99.5,
"Lomza" : 101.3,
"Wegrow" : 89.5,
"Zamosc" : 96.5,
"Miastko" : 96.8,
"Zielona Gora" : 90.3,
"Mielec" : 89.8,
"Zlotow" : 101.1,
"Zakopane" : 96.3,
"Nowa Ruda" : 99.1,
"Zagan" : 101.2,
"Nowy Sacz" : 95.1
}
class rds_buffer(gr.sync_block):
def __init__(self, *args, **kwds):
gr.sync_block.__init__(
self,
name="rds_buffer",
in_sig=None,
out_sig=None,
)
self.radio_text=''
self.message_port_register_in(pmt.intern('in'))
self.set_msg_handler(pmt.intern('in'), self.handle_msg)
def handle_msg(self, msg):
if (pmt.is_tuple(msg)):
type = pmt.to_long(pmt.tuple_ref(msg, 0))
message = pmt.symbol_to_string(pmt.tuple_ref(msg, 1))
if type == 4: #radio_text
self.radio_text = message
class rds_rx(gr.top_block):
def __init__(self, rx_freq):
gr.top_block.__init__(self, "FM RDS receiver and decoder")
##################################################
# Variables
##################################################
self.freq_offset = freq_offset = 250000
self.freq = freq = rx_freq
self.samp_rate = samp_rate = 2000000
self.gain = gain = 20
self.freq_tune = freq_tune = freq - freq_offset
##################################################
# Blocks
##################################################
self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(2, firdes.root_raised_cosine(
1, 19000, 2375, .35, 100))
self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf(
19000/250e3,
taps=None,
flt_size=32)
self.pfb_arb_resampler_xxx_0.declare_sample_delay(0)
self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + 'hackrf' )
self.osmosdr_source_0.set_clock_source('gpsdo', 0)
self.osmosdr_source_0.set_time_source('gpsdo', 0)
self.osmosdr_source_0.set_sample_rate(samp_rate)
self.osmosdr_source_0.set_center_freq(freq_tune, 0)
self.osmosdr_source_0.set_freq_corr(0, 0)
self.osmosdr_source_0.set_dc_offset_mode(0, 0)
self.osmosdr_source_0.set_iq_balance_mode(0, 0)
self.osmosdr_source_0.set_gain_mode(False, 0)
self.osmosdr_source_0.set_gain(14, 0)
self.osmosdr_source_0.set_if_gain(24, 0)
self.osmosdr_source_0.set_bb_gain(gain, 0)
self.osmosdr_source_0.set_antenna('', 0)
self.osmosdr_source_0.set_bandwidth(0, 0)
self.gr_rds_parser_0 = rds.parser(True, False, 0)
self.gr_rds_decoder_0 = rds.decoder(False, False)
self.freq_xlating_fir_filter_xxx_1_0 = filter.freq_xlating_fir_filter_fcc(1, (firdes.low_pass(2500.0,250000,2.6e3,2e3,firdes.WIN_HAMMING)), 57e3, 250000)
self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(1, (firdes.low_pass(1, samp_rate, 80000, 20000)), freq_offset, samp_rate)
self.digital_psk_demod_0 = digital.psk.psk_demod(
constellation_points=2,
differential=False,
samples_per_symbol=4,
excess_bw=0.35,
phase_bw=6.28/100.0,
timing_bw=6.28/100.0,
mod_code="gray",
verbose=False,
log=False,
)
self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_char*1, 2)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=samp_rate,
audio_decimation=8,
)
self.rds_buffer_0 = rds_buffer()
##################################################
# Connections
##################################################
self.msg_connect((self.gr_rds_decoder_0, 'out'), (self.gr_rds_parser_0, 'in'))
self.connect((self.analog_wfm_rcv_0, 0), (self.freq_xlating_fir_filter_xxx_1_0, 0))
self.connect((self.blocks_keep_one_in_n_0, 0), (self.digital_diff_decoder_bb_0, 0))
self.connect((self.digital_diff_decoder_bb_0, 0), (self.gr_rds_decoder_0, 0))
self.connect((self.digital_psk_demod_0, 0), (self.blocks_keep_one_in_n_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.analog_wfm_rcv_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_1_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.freq_xlating_fir_filter_xxx_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.root_raised_cosine_filter_0, 0))
self.connect((self.root_raised_cosine_filter_0, 0), (self.digital_psk_demod_0, 0))
self.msg_connect((self.gr_rds_parser_0, 'out'), (self.rds_buffer_0, 'in'))
def get_freq(self):
return self.freq
def set_freq(self, freq):
self.freq = freq
self.set_freq_tune(self.freq - self.freq_offset)
self.rds_buffer_0.radio_text = ''
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.osmosdr_source_0.set_sample_rate(self.samp_rate)
self.freq_xlating_fir_filter_xxx_0.set_taps((firdes.low_pass(1, self.samp_rate, 80000, 20000)))
def get_gain(self):
return self.gain
def set_gain(self, gain):
self.gain = gain
self.osmosdr_source_0.set_bb_gain(self.gain, 0)
def get_freq_tune(self):
return self.freq_tune
def set_freq_tune(self, freq_tune):
self.freq_tune = freq_tune
self.osmosdr_source_0.set_center_freq(self.freq_tune, 0)
def get_freq_offset(self):
return self.freq_offset
def set_freq_offset(self, freq_offset):
self.freq_offset = freq_offset
self.set_freq_tune(self.freq - self.freq_offset)
self.freq_xlating_fir_filter_xxx_0.set_center_freq(self.freq_offset)
class fm_tx(gr.top_block):
def __init__(self, frequency, file, sample_rate):
gr.top_block.__init__(self, "FM Transmitter")
##################################################
# Variables
##################################################
self.tune_freq = tune_freq = frequency
self.file_name = file_name = file
self.samp_rate = samp_rate = sample_rate
##################################################
# Blocks
##################################################
self.osmosdr_sink_0 = osmosdr.sink(args="numchan=" + str(1) + " " + 'hackrf')
self.osmosdr_sink_0.set_clock_source('gpsdo', 0)
self.osmosdr_sink_0.set_time_source('gpsdo', 0)
self.osmosdr_sink_0.set_time_now(osmosdr.time_spec_t(time.time()), osmosdr.ALL_MBOARDS)
self.osmosdr_sink_0.set_sample_rate(16 * samp_rate)
self.osmosdr_sink_0.set_center_freq(tune_freq, 0)
self.osmosdr_sink_0.set_freq_corr(0, 0)
self.osmosdr_sink_0.set_gain(RF_GAIN, 0)
self.osmosdr_sink_0.set_if_gain(0, 0)
self.osmosdr_sink_0.set_bb_gain(0, 0)
self.osmosdr_sink_0.set_antenna('', 0)
self.osmosdr_sink_0.set_bandwidth(70000, 0)
self.blocks_wavfile_source_0 = blocks.wavfile_source(file_name, True)
self.analog_wfm_tx_0 = analog.wfm_tx(
audio_rate=samp_rate,
quad_rate=16 * samp_rate,
tau=50e-6,
max_dev=50e3,
fh=-1,
)
##################################################
# Connections
##################################################
self.connect((self.analog_wfm_tx_0, 0), (self.osmosdr_sink_0, 0))
self.connect((self.blocks_wavfile_source_0, 0), (self.analog_wfm_tx_0, 0))
def get_tune_freq(self):
return self.tune_freq
def set_tune_freq(self, tune_freq):
self.tune_freq = tune_freq
self.osmosdr_sink_0.set_center_freq(self.tune_freq, 0)
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.osmosdr_sink_0.set_sample_rate(16 * self.samp_rate)
def get_file_name(self):
return self.file_name
def set_file_name(self, file_name):
self.file_name = file_name
def print_usage_and_exit():
print('I am not responsible for using this code to break any local and/or international laws. Use at your own risk.')
print('This script finds the local Radio Maryja frequency and broadcasts a chosen wave file or youtube audio on it.')
print('Supports only Polish FM radio frequencies (for now)')
print('USAGE:')
print(' hackrf_ma_twarz.py *what*')
print('WHERE:')
print(' what - filename of wave file (without .wav extension)')
print(' OR youtube video id (https://www.youtube.com/watch?v=*this part*)')
exit(1)
def receive_rds(receiver):
receiver.wait()
def download_audio_from_yt(id):
ydl_options = {
'format': u'bestaudio/best',
'outtmpl': u'%(id)s.%(ext)s',
'postprocessors': [{
'key': 'FFmpegExtractAudio',
'preferredcodec': 'wav'
}]
}
with youtube_dl.YoutubeDL(ydl_options) as ydl:
ydl.download([unicode('https://www.youtube.com/watch?v={}'.format(id))])
def check_frequency(name):
print('[hackrf_ma_twarz] checking frequency for {} : {} MHz'.format(name, str(FREQS[name])))
receiver = rds_rx(FREQS[name]*1e6)
receiver.start()
receiver_thread = threading.Thread(target=receive_rds, args=(receiver,))
receiver_thread.start()
print("[hackrf_ma_twarz] +Receiver thread started")
time.sleep(TUNING_TIME)
print("[hackrf_ma_twarz] +Stopping receiver")
receiver.stop()
print("[hackrf_ma_twarz] +Waiting for receiver to terminate")
receiver.wait()
print("[hackrf_ma_twarz] +Checking captured RDS")
ret = RDS_TEXT_FRAGMENT in receiver.rds_buffer_0.radio_text
print("[hackrf_ma_twarz] +Waiting for device to be freed")
time.sleep(HACKRF_RELEASE_TIME)
del receiver
print("[hackrf_ma_twarz] +Receiver object destroyed")
return ret
def transmit(tx_frequency, source_file, sample_rate):
print("[hackrf_ma_twarz] Transmitting {} on {} MHz, Ctrl+C to stop".format(source_file, tx_frequency))
transmitter = fm_tx(tx_frequency*1e6, source_file, sample_rate)
transmitter.start()
transmitter.wait()
print("[hackrf_ma_twarz] +Stopping transmitter")
transmitter.stop()
print("[hackrf_ma_twarz] +Waiting for transmitter to terminate")
transmitter.wait()
print("[hackrf_ma_twarz] +Waiting for device to be freed")
time.sleep(HACKRF_RELEASE_TIME)
del transmitter
print("[hackrf_ma_twarz] +Transmitter object destroyed")
def check_sample_rate(path):
return int(sox.file_info.sample_rate(path))
##################################################################
if len(sys.argv) < 2:
print_usage_and_exit()
what = str(sys.argv[1])
path = "{}.wav".format(what)
if not os.path.exists(path):
print('[hackrf_ma_twarz] {} not found, downloading video {} from youtube'.format(path, what))
try:
download_audio_from_yt(what)
except:
print_usage_and_exit()
found = []
if os.path.exists(CACHE_FILE):
with open(CACHE_FILE, "r") as cache_file:
from_cache = cache_file.readlines()
for raw_name in from_cache:
found.append(raw_name.strip())
if len(found) < 1:
do_scan=True
else:
print("[hackrf_ma_twarz] Found cache containg frequencies:")
for freq_nm in found:
print("[hackrf_ma_twarz] [{}] : {} MHz".format(freq_nm, FREQS[freq_nm]))
answer = str(raw_input("[hackrf_ma_twarz] Type [Y] to do a new scan:"))
do_scan = answer.lower() in "y"
else:
do_scan=True
if do_scan:
found = []
for frequency_name in FREQS:
if check_frequency(frequency_name):
print("[hackrf_ma_twarz] Found \"{}\" on {} : {}".format(RDS_TEXT_FRAGMENT, frequency_name, FREQS[frequency_name]))
found.append(frequency_name)
if len(found) > 0:
if os.path.exists(CACHE_FILE):
os.remove(CACHE_FILE)
with open(CACHE_FILE, "w") as cache_file:
for freq_nm in found:
cache_file.write(freq_nm + "\n")
print("[hackrf_ma_twarz] Stored {} in cache.".format(found))
else:
print("[hackrf_ma_twarz] No transmitters found, sorry")
exit(1)
print("[hackrf_ma_twarz] Following frequencies were found:")
frequency_choice = {}
for i in range(0, len(found)):
frequency_choice[i] = found[i]
print("[hackrf_ma_twarz] [{}] {} : {} MHz".format(i, found[i], FREQS[found[i]]))
chosen = -1
while not chosen in range(0, len(found)):
chosen = int(raw_input("[hackrf_ma_twarz] Please choose one by typing in the number in brackets:"))
sample_rate = check_sample_rate(path)
transmit(FREQS[found[chosen]], path, sample_rate)