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 test_001_super_frame_dec(self):
import os
print 'Blocked waiting for gdb attach (pid=%d)' % (os.getpid(), )
raw_input('Press Enter to continue:')
src = gr.file_source(1, "logfrm.dat", False)
cifsz = 55296
start_addr = 504
subchsz = 72
optprot = 2
I = 32 * 6 * subchsz / 6
len_logfrm = I / 8
subchidx = len_logfrm / 24
sync = dabp.super_frame_sync(len_logfrm)
rs = dabp.super_frame_rsdec(subchidx)
dst = dabp.super_frame_sink(subchidx, "dabp_test.aac")
self.tb.connect(src, sync, rs, dst)
self.tb.run()
def test_001_super_frame_dec (self):
import os
print 'Blocked waiting for gdb attach (pid=%d)' % (os.getpid(),)
raw_input('Press Enter to continue:')
src = gr.file_source (1,"logfrm.dat",False)
cifsz=55296
start_addr=504
subchsz=72
optprot=2
I=32*6*subchsz/6
len_logfrm=I/8
subchidx=len_logfrm/24
sync = dabp.super_frame_sync(len_logfrm)
rs = dabp.super_frame_rsdec(subchidx)
dst = dabp.super_frame_sink(subchidx,"dabp_test.aac")
self.tb.connect (src, sync, rs, dst)
self.tb.run ()
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-m", "--dab-mode", type="int", default=1,
help="DAB mode [default=%default]")
parser.add_option("-f", "--freq", type="eng_float", default=206352000,
help="Carrier frequency [default=%default]")
parser.add_option("-g", "--gain", type="eng_float", default=8,
help="USRP gain (dB) [default=%default]")
parser.add_option("-i", "--subchid", type="int", default=-1,
help="Subchannel ID")
parser.add_option("-n", "--config", type="string", default="channel3.conf",
help="DAB+ channel configuration file [default=%default]")
parser.add_option("-o", "--output", type="string", default="-",
help="Output AAC file [default=%default]")
parser.add_option("-p", "--mplayer", action="store_true", default=False,
help="Play the program by MPlayer [default=%default, stdout]")
(options, args) = parser.parse_args ()
if len(args)>0:
parser.print_help()
raise SystemExit, 1
######## set up usrp
self.u = usrp.source_c(decim_rate=32) # 2M sampling freq
rx_subdev_spec = usrp.pick_rx_subdevice(self.u)
#print "u.db(0,0).dbid() = ", self.u.db(0,0).dbid()
#print "u.db(1,0).dbid() = ", self.u.db(1,0).dbid()
#print "rx_subdev_spec = ", options.rx_subdev_spec
mux=usrp.determine_rx_mux_value(self.u, rx_subdev_spec)
#print "mux = ", mux
self.u.set_mux(mux)
# determine the daughterboard subdevice we're using
self.subdev = usrp.selected_subdev(self.u, rx_subdev_spec)
#print "Using RX d'board %s" % (self.subdev.side_and_name(),)
input_rate = self.u.adc_freq() / self.u.decim_rate()
#print "ADC sampling @ ", eng_notation.num_to_str(self.u.adc_freq())
#print "USB sample rate %s" % (eng_notation.num_to_str(input_rate))
self.subdev.set_gain(options.gain)
r = self.u.tune(0, self.subdev, options.freq)
#print "freq range = [%s, %s]" % (eng_notation.num_to_str(self.subdev.freq_min()), eng_notation.num_to_str(self.subdev.freq_max()))
if not r:
sys.stderr.write('Failed to set frequency\n')
raise SystemExit, 1
# channel configuration
cc = dabp.channel_conf(options.config)
sys.stderr.write("Playing Channel: "+cc.get_label(options.subchid)+"\n")
start_addr = cc.get_start_addr(options.subchid)
subchsz = cc.get_subchsz(options.subchid)
optprot = cc.get_optprot(options.subchid)
#print "start_addr=%d, subchsz=%d, optprot=%d" % (start_addr, subchsz, optprot)
mode=options.dab_mode
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 options.mplayer:
mplayer = subprocess.Popen(['mplayer', '-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, options.output)
nullsink = gr.null_sink(gr.sizeof_char)
# connect everything
self.connect(self.u, nulldet)
self.connect(self.u, (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):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-m",
"--dab-mode",
type="int",
default=1,
help="DAB mode [default=%default]")
parser.add_option("-f",
"--freq",
type="eng_float",
default=206352000,
help="Carrier frequency [default=%default]")
parser.add_option("-g",
"--gain",
type="eng_float",
default=8,
help="USRP gain (dB) [default=%default]")
parser.add_option("-i",
"--subchid",
type="int",
default=-1,
help="Subchannel ID")
parser.add_option(
"-n",
"--config",
type="string",
default="channel3.conf",
help="DAB+ channel configuration file [default=%default]")
parser.add_option("-o",
"--output",
type="string",
default="-",
help="Output AAC file [default=%default]")
parser.add_option(
"-p",
"--mplayer",
action="store_true",
default=False,
help="Play the program by MPlayer [default=%default, stdout]")
(options, args) = parser.parse_args()
if len(args) > 0:
parser.print_help()
raise SystemExit, 1
######## set up usrp
self.u = usrp.source_c(decim_rate=32) # 2M sampling freq
rx_subdev_spec = usrp.pick_rx_subdevice(self.u)
#print "u.db(0,0).dbid() = ", self.u.db(0,0).dbid()
#print "u.db(1,0).dbid() = ", self.u.db(1,0).dbid()
#print "rx_subdev_spec = ", options.rx_subdev_spec
mux = usrp.determine_rx_mux_value(self.u, rx_subdev_spec)
#print "mux = ", mux
self.u.set_mux(mux)
# determine the daughterboard subdevice we're using
self.subdev = usrp.selected_subdev(self.u, rx_subdev_spec)
#print "Using RX d'board %s" % (self.subdev.side_and_name(),)
input_rate = self.u.adc_freq() / self.u.decim_rate()
#print "ADC sampling @ ", eng_notation.num_to_str(self.u.adc_freq())
#print "USB sample rate %s" % (eng_notation.num_to_str(input_rate))
self.subdev.set_gain(options.gain)
r = self.u.tune(0, self.subdev, options.freq)
#print "freq range = [%s, %s]" % (eng_notation.num_to_str(self.subdev.freq_min()), eng_notation.num_to_str(self.subdev.freq_max()))
if not r:
sys.stderr.write('Failed to set frequency\n')
raise SystemExit, 1
# channel configuration
cc = dabp.channel_conf(options.config)
sys.stderr.write("Playing Channel: " + cc.get_label(options.subchid) +
"\n")
start_addr = cc.get_start_addr(options.subchid)
subchsz = cc.get_subchsz(options.subchid)
optprot = cc.get_optprot(options.subchid)
#print "start_addr=%d, subchsz=%d, optprot=%d" % (start_addr, subchsz, optprot)
mode = options.dab_mode
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 options.mplayer:
mplayer = subprocess.Popen([
'mplayer', '-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, options.output)
nullsink = gr.null_sink(gr.sizeof_char)
# connect everything
self.connect(self.u, nulldet)
self.connect(self.u, (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):
gr.top_block.__init__(self)
usage = "%prog: [options] samples_file"
parser = OptionParser(option_class=eng_option, usage=usage)
parser.add_option("-m", "--dab-mode", type="int", default=1,
help="DAB mode [default=%default]")
parser.add_option("-c", "--complex", action="store_true", default=False,
help="Sample file is float complex (64 bit per sample, 32 I + 32 Q) format")
parser.add_option("-i", "--subchid", type="int", default=-1,
help="Subchannel ID")
parser.add_option("-n", "--config", type="string", default="channel2.conf",
help="DAB+ channel configuration file [default=%default]")
parser.add_option("-p", "--mplayer", action="store_true", default=False,
help="Play the program by MPlayer [default=%default, stdout]")
(options, args) = parser.parse_args ()
if len(args)<1:
parser.print_help()
raise SystemExit, 1
else:
filename = args[0]
if options.complex:
src = gr.file_source(gr.sizeof_gr_complex, filename, False)
else:
sinput = gr.file_source(gr.sizeof_short, filename, False)
src = gr.interleaved_short_to_complex()
self.connect(sinput, src)
# channel configuration
cc = dabp.channel_conf(options.config)
sys.stderr.write("Playing Channel: "+cc.get_label(options.subchid)+"\n")
start_addr = cc.get_start_addr(options.subchid)
subchsz = cc.get_subchsz(options.subchid)
optprot = cc.get_optprot(options.subchid)
# print "start_addr=%d, subchsz=%d, optprot=%d" % (start_addr, subchsz, optprot)
mode=options.dab_mode
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 options.mplayer:
mplayer = subprocess.Popen(['mplayer', '-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, "-")
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)
self.connect((scs,0), (intlv,0), (punc,0), (vit,0), (scram,0), (sync,0), (rs,0), (dst,0))
self.connect((demod,1), nullsink)
self.connect((scs,1), (intlv,1), (punc,1), (vit,1), (scram,1), (sync,1), (rs,1), (dst,1))
# debug
#self.connect(nulldet, gr.file_sink(gr.sizeof_char, "debug_nulldet.dat"))
#self.connect((scs,0), gr.file_sink(gr.sizeof_float, "debug_scs.dat"))
#self.connect((intlv,0), gr.file_sink(gr.sizeof_float, "debug_int.dat"))
#self.connect((punc,0), gr.file_sink(gr.sizeof_float, "debug_punc.dat"))
#self.connect((vit,0), gr.file_sink(gr.sizeof_char, "debug_vit.dat"))
#self.connect((scram,0), gr.file_sink(gr.sizeof_char, "debug_scr.dat"))
self.connect((sync,0), gr.file_sink(gr.sizeof_char, "debug_sync.dat"))