def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
assert context is not None
gr.hier_block2.__init__(
self,
str(mode) + ' (FM + Multimon-NG) demodulator',
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1),
)
self.mode = mode
self.input_rate = input_rate
# FM demod
# TODO: Retry telling the NFMDemodulator to have its output rate be pipe_rate instead of using a resampler. Something went wrong when trying that before. Same thing is done in dsd.py
self.fm_demod = NFMDemodulator(
mode='NFM',
input_rate=input_rate,
no_audio_filter=True, # don't remove CTCSS tone
tau=None) # no deemphasis
assert self.fm_demod.get_output_type().get_kind() == 'MONO'
fm_audio_rate = self.fm_demod.get_output_type().get_sample_rate()
# Subprocess
self.mm_demod = APRSDemodulator(context=context)
mm_audio_rate = self.mm_demod.get_input_type().get_sample_rate()
# Output
self.connect(self, self.fm_demod,
make_resampler(fm_audio_rate, mm_audio_rate),
self.mm_demod, self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
gr.hier_block2.__init__(self,
type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
# TODO: Retry telling the NFMDemodulator to have its output rate be pipe_rate instead of using a resampler. Something went wrong when trying that before. Same thing is done in multimon.py
self.__fm_demod = NFMDemodulator(
mode='NFM',
input_rate=input_rate,
no_audio_filter=True, # don't remove CTCSS tone
tau=None) # no deemphasis
assert self.__fm_demod.get_output_type().get_kind() == 'MONO'
fm_audio_rate = self.__fm_demod.get_output_type().get_sample_rate()
self.__output_type = SignalType(kind='MONO', sample_rate=8000)
self.connect(self, self.__fm_demod,
make_resampler(fm_audio_rate, _demod_rate),
dsd_block_ff(), self)
