def __init__(self, dab_params, sampling_rate, num_subch, ensemble_lable,
service_label, service_comp_label, service_language,
protection_mode, data_rate_n):
gr.hier_block2.__init__(
self,
"transmitter_c",
gr.io_signature(0, 0, gr.sizeof_char), # Input signature
gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
self.dp = dab_params
self.sampling_rate = sampling_rate
# FIC
self.fic_source = dab.fib_source_b_make(self.dp.mode, num_subch,
ensemble_lable, service_label,
service_comp_label,
service_language,
protection_mode, data_rate_n)
self.fic_encode = dab.fic_encode(self.dp)
# MSC
self.msc_encoder()
for i in range(0, num_subch):
self.msc_encoder[i] = dab.msc_encode(self.dp, data_rate_n[i],
protection_mode[i])
# MUX
self.subch_size = 6 * data_rate_n
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dp.mode, num_subch, self.subch_size)
# OFDM Modulator
self.s2v = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dp)
# connect everything
self.connect(self.fic_source, self.fic_encode, (self.mux, 0))
for i in range(0, num_subch):
self.connect((self, i), self.msc_encoder[i], (self.mux, i + 1))
self.connect((self.mux, 0), self.s2v, (self.mod, 0))
self.connect((self.mux, 1), (self.mod, 1))
self.connect(self.mod, self)
def test_001_t (self):
self.symbol_length = 32*4
self.dab_params = dab.parameters.dab_parameters(1, 208.064e6, True)
# source
self.dp = dab.parameters.dab_parameters(1, 208.064e6, True)
self.fib_src = dab.fib_source_b_make(1, 1, "ensemble1", "service1", "musicmix", 4, [2], [15])
# encoder
self.fib_enc = dab.fic_encode(self.dab_params)
self.unpack = blocks.packed_to_unpacked_bb_make(1, gr.GR_MSB_FIRST)
# mapper
self.map = dab.mapper_bc_make(self.dp.num_carriers)
# demapper
self.s2v = blocks.stream_to_vector_make(gr.sizeof_gr_complex, self.dp.num_carriers)
self.soft_interleaver = dab.complex_to_interleaved_float_vcf_make(self.dp.num_carriers)
# decode
self.fic_decoder = dab.fic_decode(self.dab_params)
# control stream
self.trigger_src = blocks.vector_source_b([1] + [0]*74, True)
self.tb.connect(self.fib_src,
blocks.head_make(gr.sizeof_char, 100000),
self.fib_enc,
self.unpack,
self.map,
self.s2v,
self.soft_interleaver,
self.fic_decoder
)
self.tb.connect(self.trigger_src, (self.fic_decoder, 1))
self.tb.run ()
pass
def __init__(self,
frequency,
num_subch,
ensemble_label,
service_label,
language,
protections,
data_rates_n,
src_paths,
selected_audio,
use_usrp,
sink_path="dab_iq_generated.dat"):
gr.top_block.__init__(self)
self.dab_mode = 1
self.frequency = frequency
interp = 64
self.sample_rate = 128e6 / interp
self.dp = dab.parameters.dab_parameters(self.dab_mode, 2000000, False)
self.num_subch = num_subch
self.ensemble_label = ensemble_label
self.service_label = service_label
self.language = language
self.protections = protections
self.data_rates_n = data_rates_n
self.subch_sizes = np.multiply(self.data_rates_n, 6)
self.src_paths = src_paths
self.use_usrp = use_usrp
self.sink_path = sink_path
self.selected_audio = selected_audio
self.volume = 80
########################
# FIC
########################
# source
self.fic_src = dab.fib_source_b_make(self.dab_mode, self.num_subch,
self.ensemble_label,
self.service_label, "",
self.language, self.protections,
self.data_rates_n)
# encoder
self.fic_enc = dab.fic_encode(self.dp)
########################
# MSC
########################
self.msc_sources = [None] * self.num_subch
self.f2s_left_converters = [None] * self.num_subch
self.f2s_right_converters = [None] * self.num_subch
self.mp4_encoders = [None] * self.num_subch
self.rs_encoders = [None] * self.num_subch
self.msc_encoders = [None] * self.num_subch
for i in range(0, self.num_subch):
# source
self.msc_sources[i] = blocks.wavfile_source_make(
self.src_paths[i], True)
# float to short
self.f2s_left_converters[i] = blocks.float_to_short_make(1, 32767)
self.f2s_right_converters[i] = blocks.float_to_short_make(1, 32767)
# mp4 encoder and Reed-Solomon encoder
self.mp4_encoders[i] = dab.mp4_encode_sb_make(
self.data_rates_n[i], 2, 32000, 1)
self.rs_encoders[i] = dab.reed_solomon_encode_bb_make(
self.data_rates_n[i])
# encoder
self.msc_encoders[i] = dab.msc_encode(self.dp,
self.data_rates_n[i],
self.protections[i])
########################
# MUX
########################
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dab_mode, self.num_subch, self.subch_sizes)
#self.mux = dab.dab_transmission_frame_mux_bb_make(1, 1, [84, 84])
self.trigsrc = blocks.vector_source_b([1] + [0] * 74, True)
########################
# Modulator
########################
self.s2v_mod = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dp)
########################
# Sink
########################
if self.use_usrp:
self.sink = uhd.usrp_sink("", uhd.io_type.COMPLEX_FLOAT32, 1)
self.sink.set_samp_rate(self.sample_rate)
self.sink.set_antenna("TX/RX")
self.sink.set_center_freq(self.frequency)
else:
self.sink = blocks.file_sink_make(gr.sizeof_gr_complex,
self.sink_path)
# audio sink
self.audio = audio.sink_make(32000)
self.gain_left = blocks.multiply_const_ff_make(1, 1)
self.gain_right = blocks.multiply_const_ff_make(1, 1)
########################
# Connections
########################
self.connect(self.fic_src, self.fic_enc, (self.mux, 0))
for i in range(0, self.num_subch):
self.connect((self.msc_sources[i], 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
self.connect((self.mux, 0), self.s2v_mod, (self.mod, 0))
self.connect(self.trigsrc, (self.mod, 1))
self.connect(self.mod, self.sink)
self.connect((self.msc_sources[self.selected_audio - 1], 0),
self.gain_left, (self.audio, 0))
self.connect((self.msc_sources[self.selected_audio - 1], 1),
self.gain_right, (self.audio, 1))
def test_001_t(self):
log = gr.logger("log")
if os.path.exists("debug/rs_encoded.dat") and os.path.exists(
"debug/rs_encoded.dat"):
self.dp = dab.parameters.dab_parameters(1, 208.064e6, True)
# sources
self.fib_src = dab.fib_source_b_make(1, 1, 'Galaxy_News',
'Wasteland_Radio',
'Country_Mix01', 0x09, [2],
[14])
self.fib_pack = blocks.unpacked_to_packed_bb_make(
1, gr.GR_MSB_FIRST)
self.subch_src01 = blocks.file_source_make(gr.sizeof_char,
"debug/rs_encoded.dat",
True)
self.subch_src02 = blocks.file_source_make(
gr.sizeof_char, "debug/rs_encoded_2.dat", True)
# encoder
self.fib_enc = dab.fic_encode(self.dp)
self.msc_encoder = dab.msc_encode(self.dp, 14, 2)
self.msc_encoder2 = dab.msc_encode(self.dp, 14, 2)
# multiplexer
self.mux = dab.dab_transmission_frame_mux_bb_make(1, 2, [84, 84])
# mapper
self.unpack = blocks.packed_to_unpacked_bb_make(1, gr.GR_MSB_FIRST)
self.map = dab.mapper_bc_make(self.dp.num_carriers)
# demapper
self.s2v = blocks.stream_to_vector_make(gr.sizeof_gr_complex,
self.dp.num_carriers)
self.soft_interleaver = dab.complex_to_interleaved_float_vcf_make(
self.dp.num_carriers)
# decode
self.fic_decoder = dab.fic_decode(self.dp)
self.msc_dec = dab.dabplus_audio_decoder_ff(
self.dp, 112, 0, 84, 2, True)
# audio sink
self.audio = audio.sink_make(32000)
# control stream
self.trigger_src = blocks.vector_source_b([1] + [0] * 74, True)
# connect everything
self.tb.connect(self.fib_src, self.fib_enc, (self.mux, 0))
self.tb.connect(self.subch_src01, self.msc_encoder, (self.mux, 1))
self.tb.connect(self.subch_src02, self.msc_encoder2, (self.mux, 2))
self.tb.connect((self.mux, 0), self.unpack, self.map, self.s2v,
self.soft_interleaver, (self.msc_dec, 0))
self.tb.connect(self.soft_interleaver, (self.fic_decoder, 0))
self.tb.connect(self.trigger_src, (self.fic_decoder, 1))
self.tb.connect(self.trigger_src, (self.msc_dec, 1))
self.tb.connect((self.msc_dec, 0), (self.audio, 0))
self.tb.connect((self.msc_dec, 1), (self.audio, 1))
self.tb.run()
pass
else:
log.debug("debug file not found - skipped test")
log.set_level("WARN")
pass
def __init__(self,
dab_mode,
frequency,
num_subch,
ensemble_label,
service_label,
language,
country_ID,
protections,
data_rates_n,
stereo_flags,
audio_sampling_rates,
src_paths,
selected_audio,
use_usrp,
dabplus_types,
sink_path="dab_iq_generated.dat"):
gr.top_block.__init__(self)
self.dab_mode = dab_mode
self.frequency = frequency
interp = 64
self.sample_rate = 128e6 / interp
self.dp = dab.parameters.dab_parameters(self.dab_mode, 2000000, False)
self.num_subch = num_subch
self.ensemble_label = ensemble_label
self.service_label = service_label
self.language = language
self.protections = protections
self.data_rates_n = data_rates_n
self.src_paths = src_paths
self.use_usrp = use_usrp
self.dabplus_types = dabplus_types
self.sink_path = sink_path
self.selected_audio = selected_audio
self.volume = 80
sizes = {0: 12, 1: 8, 2: 6, 3: 4}
self.subch_sizes = [None] * len(self.data_rates_n)
for i in range(0, len(self.data_rates_n)):
self.subch_sizes[i] = self.data_rates_n[i] * sizes[protections[i]]
########################
# FIC
########################
# source
self.fic_src = dab.fib_source_b_make(
self.dab_mode, country_ID, self.num_subch, self.ensemble_label,
self.service_label, "", self.language, self.protections,
self.data_rates_n, self.dabplus_types)
# encoder
self.fic_enc = dab.fic_encode(self.dp)
########################
# MSC
########################
self.recorder = audio.source_make(32000)
self.msc_sources = [None] * self.num_subch
self.f2s_left_converters = [None] * self.num_subch
self.f2s_right_converters = [None] * self.num_subch
self.mp4_encoders = [None] * self.num_subch
self.mp2_encoders = [None] * self.num_subch
self.rs_encoders = [None] * self.num_subch
self.msc_encoders = [None] * self.num_subch
for i in range(0, self.num_subch):
if not self.src_paths[i] is "mic":
# source
self.msc_sources[i] = blocks.wavfile_source_make(
self.src_paths[i], True)
# float to short
self.f2s_left_converters[i] = blocks.float_to_short_make(1, 32767)
self.f2s_right_converters[i] = blocks.float_to_short_make(1, 32767)
if self.dabplus_types[i] is 1:
# mp4 encoder and Reed-Solomon encoder
self.mp4_encoders[i] = dab.mp4_encode_sb_make(
self.data_rates_n[i], 2, audio_sampling_rates[i], 1)
self.rs_encoders[i] = dab.reed_solomon_encode_bb_make(
self.data_rates_n[i])
else:
# mp2 encoder
self.mp2_encoders[i] = dab.mp2_encode_sb_make(
self.data_rates_n[i], 2, audio_sampling_rates[i])
# encoder
self.msc_encoders[i] = dab.msc_encode(self.dp,
self.data_rates_n[i],
self.protections[i])
########################
# MUX
########################
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dab_mode, self.num_subch, self.subch_sizes)
self.trigsrc = blocks.vector_source_b(
[1] + [0] * (self.dp.symbols_per_frame - 2), True)
########################
# Modulator
########################
self.s2v_mod = blocks.stream_to_vector(gr.sizeof_char,
self.dp.num_carriers / 4)
self.mod = dab.ofdm_mod(self.dp)
########################
# Sink
########################
if self.use_usrp:
self.sink = uhd.usrp_sink("", uhd.io_type.COMPLEX_FLOAT32, 1)
self.sink.set_samp_rate(self.sample_rate)
self.sink.set_antenna("TX/RX")
self.sink.set_center_freq(self.frequency)
else:
self.sink = blocks.file_sink_make(gr.sizeof_gr_complex,
self.sink_path)
# audio sink
self.audio = audio.sink_make(32000)
self.gain_left = blocks.multiply_const_ff_make(1, 1)
self.gain_right = blocks.multiply_const_ff_make(1, 1)
self.s2f_left = blocks.short_to_float_make(1, 32767)
self.s2f_right = blocks.short_to_float_make(1, 32767)
########################
# Connections
########################
self.connect(self.fic_src, self.fic_enc, (self.mux, 0))
for i in range(0, self.num_subch):
if self.dabplus_types[i] is 1:
if self.src_paths[i] is "mic":
self.connect(
(self.recorder, 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.recorder, 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(
(self.msc_sources[i], 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect((self.msc_sources[i], 0),
self.f2s_left_converters[i],
(self.mp2_encoders[i], 0), self.msc_encoders[i],
(self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp2_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp2_encoders[i], 1))
self.connect((self.mux, 0), self.s2v_mod, (self.mod, 0))
self.connect(self.trigsrc, (self.mod, 1))
if use_usrp:
self.connect(self.mod, self.sink)
else:
self.connect(self.mod,
blocks.throttle_make(gr.sizeof_gr_complex, 2e6),
self.sink)