def __init__(self, mode, freq, gain, conf, subchid, record=None, usrp=True):
gr.top_block.__init__(self)
if usrp: # set up usrp source
src = dabp_usrp.setup_usrp(freq, gain)
else: # set up sample file source
sinput = gr.file_source(gr.sizeof_short, samp.encode('ascii'), False)
src = gr.interleaved_short_to_complex()
self.connect(sinput, src)
# channel configuration
cc = dabp.channel_conf(conf)
#sys.stderr.write("Playing Channel: "+cc.get_label(options.subchid)+"\n")
start_addr = cc.get_start_addr(subchid)
subchsz = cc.get_subchsz(subchid)
optprot = cc.get_optprot(subchid)
#print "start_addr=%d, subchsz=%d, optprot=%d" % (start_addr, subchsz, optprot)
param = dabp.parameters(mode)
# null symbol detector
samples_per_null_sym=param.get_Nnull()
#print "samples per null symbol : %d" % samples_per_null_sym
nulldet = dabp.detect_null(samples_per_null_sym)
# ofdm demod
demod = dabp.ofdm_demod(mode)
# FIC/MSC demultiplexer
demux = dabp.fic_msc_demux(1, mode)
cifsz = param.get_cifsz()
scs = dabp.subchannel_selector(cifsz,start_addr,subchsz)
intlv = dabp.time_deinterleaver(subchsz)
punc = dabp.depuncturer(subchsz,optprot)
I = punc.getI()
vit = dabp.vitdec(I)
scram = dabp.scrambler(I)
len_logfrm=scram.get_nbytes()
sync = dabp.super_frame_sync(len_logfrm)
subchidx = sync.get_subchidx()
rs = dabp.super_frame_rsdec(subchidx)
if record == None:
mplayer = subprocess.Popen(['mplayer', '-af', 'volume=20', '-ac', '+faad', '-rawaudio', 'format=0xff', '-demuxer', '+rawaudio','-'], stdin=subprocess.PIPE)
dst = dabp.super_frame_sink(subchidx, mplayer.stdin.fileno())
else:
dst = dabp.super_frame_sink(subchidx, record.encode('ascii'))
nullsink = gr.null_sink(gr.sizeof_char)
# connect everything
self.connect(src, nulldet)
self.connect(src, (demod,0))
self.connect(nulldet, (demod,1))
self.connect((demod,0), demux, scs, intlv, punc, vit, scram, sync, rs, dst)
self.connect((demod,1), nullsink)
def __init__(self, mode, freq, gain, conf, samp=None, usrp=True):
gr.top_block.__init__(self)
if usrp: # set up usrp source
src = dabp_usrp.setup_usrp(freq, gain)
else: # set up sample file source
sinput = gr.file_source(gr.sizeof_short, samp.encode('ascii'), False)
src = gr.interleaved_short_to_complex()
self.connect(sinput, src)
param = dabp.parameters(mode)
# null symbol detector
samples_per_null_sym=param.get_Nnull()
#print "samples per null symbol : %d" % samples_per_null_sym
nulldet = dabp.detect_null(samples_per_null_sym)
# ofdm demod
demod = dabp.ofdm_demod(mode)
# FIC/MSC demultiplexer
demux = dabp.fic_msc_demux(0, mode)
# depuncturer
punc = dabp.depuncturer_fic(mode)
I=punc.getI()
# viterbi
vit = dabp.vitdec(I)
# descrambler
scram = dabp.scrambler(I)
# FIB sink
self.dst = dabp.fib_sink()
nullsink = gr.null_sink(gr.sizeof_char)
# connect everything
self.connect(src, nulldet)
self.connect(src, (demod,0))
self.connect(nulldet, (demod,1))
self.connect((demod,0), demux, punc, vit, scram, self.dst)
self.connect((demod,1), nullsink)
def __init__(self, mode, freq, gain, conf, samp=None, usrp=True):
gr.top_block.__init__(self)
if usrp: # set up usrp source
src = dabp_usrp.setup_usrp(freq, gain)
else: # set up sample file source
sinput = gr.file_source(gr.sizeof_short, samp.encode('ascii'),
False)
src = gr.interleaved_short_to_complex()
self.connect(sinput, src)
param = dabp.parameters(mode)
# null symbol detector
samples_per_null_sym = param.get_Nnull()
#print "samples per null symbol : %d" % samples_per_null_sym
nulldet = dabp.detect_null(samples_per_null_sym)
# ofdm demod
demod = dabp.ofdm_demod(mode)
# FIC/MSC demultiplexer
demux = dabp.fic_msc_demux(0, mode)
# depuncturer
punc = dabp.depuncturer_fic(mode)
I = punc.getI()
# viterbi
vit = dabp.vitdec(I)
# descrambler
scram = dabp.scrambler(I)
# FIB sink
self.dst = dabp.fib_sink()
nullsink = gr.null_sink(gr.sizeof_char)
# connect everything
self.connect(src, nulldet)
self.connect(src, (demod, 0))
self.connect(nulldet, (demod, 1))
self.connect((demod, 0), demux, punc, vit, scram, self.dst)
self.connect((demod, 1), nullsink)
