def _parseStages(self, filterIndex, line):
chains = {}
decimations = line.split(",")
for decimation in decimations:
if decimation.find("_") == -1:
rate = decimation
stringstages = None
else:
(rate, stringstages) = decimation.split("_")
(num, den) = parsers._rational(decimal.Decimal(rate))
stages = []
if stringstages:
for stage in stringstages.split("/"):
if len(stage) and stage[0] == 'A':
stages.append(str(filterIndex + "_digipaz_" + stage[1:]))
elif len(stage) and stage[0] == 'I':
stages.append(str(filterIndex + "_iirpaz_" + stage[1:]))
elif len(stage):
stages.append(str(filterIndex + "_FIR_" + stage))
else:
raise Exception("Invalid Elo-In-Chain")
if (num, den) in chains:
raise Exception("%s has a duplicate rate chain Numerator=%s Denominator=%s" % (self.id, num, den))
else:
chains[(num, den)] = stages
return chains
def _parseStages(self, filterIndex, line):
chains = {}
decimations = line.split(",")
for decimation in decimations:
if decimation.find("_") == -1:
rate = decimation
stringstages = None
else:
(rate, stringstages) = decimation.split("_")
(num, den) = parsers._rational(decimal.Decimal(rate))
stages = []
if stringstages:
for stage in stringstages.split("/"):
if len(stage) and stage[0] == 'A':
stages.append(
str(filterIndex + "_digipaz_" + stage[1:]))
elif len(stage) and stage[0] == 'I':
stages.append(str(filterIndex + "_iirpaz_" +
stage[1:]))
elif len(stage):
stages.append(str(filterIndex + "_FIR_" + stage))
else:
raise Exception("Invalid Elo-In-Chain")
if (num, den) in chains:
raise Exception(
"%s has a duplicate rate chain Numerator=%s Denominator=%s"
% (self.id, num, den))
else:
chains[(num, den)] = stages
return chains
def _parseSampling(self, sampling):
_rx_samp = re.compile(r'(?P<band_code>[A-Z])?(?P<sample_rate>.*)$')
endPreamble = sampling.find('_')
if endPreamble > 0:
for x in sampling[:endPreamble].split('/'):
if x[0] == 'F':
self.compression = x[1:]
elif x[0] == 'L':
self.location = x[1:]
elif x[0] == 'T':
self.gainCode = x[1:]
else:
raise Exception("unknown Preemble code %s in %s" % (x[0], sampling))
for x in sampling[endPreamble+1:].split('/'):
m = _rx_samp.match(x)
if not m:
raise Exception("error parsing sampling %s at %s" % (sampling, x))
try:
sample_rate = decimal.Decimal(m.group('sample_rate'))
except decimal.InvalidOperation:
raise Exception("error parsing sampling %s at %s" % (sampling, x))
band_code = m.group('band_code')
if not band_code:
if sample_rate >= 80:
band_code = 'H'
elif sample_rate >= 40:
band_code = 'S'
elif sample_rate > 1:
band_code = 'B'
elif sample_rate == 1:
band_code = 'L'
elif sample_rate == decimal.Decimal("0.1"):
band_code = 'V'
elif sample_rate == decimal.Decimal("0.01"):
band_code = 'U'
else:
raise Exception("could not determine band code for %s in %s" (x, sampling))
for orientation in self.orientations:
code = band_code + self.gainCode + orientation
if code in self.channels:
raise Exception("channel code %s aready exists for rate %s " % (band_code, sample_rate))
try:
(numerator, denominator) = parsers._rational(sample_rate)
except Exception,e:
raise Exception("Error converting sample_rate (%s)" % e)
self.channels[code] = { 'SampleRateNumerator': numerator,
'SampleRateDenominator': denominator }
self.channels[code].update(self.orientations[orientation])
def _parseSampling(self, sampling):
_rx_samp = re.compile(r'(?P<band_code>[A-Z])?(?P<sample_rate>.*)$')
endPreamble = sampling.find('_')
if endPreamble > 0:
for x in sampling[:endPreamble].split('/'):
if x[0] == 'F':
self.compression = x[1:]
elif x[0] == 'L':
self.location = x[1:]
elif x[0] == 'T':
self.gainCode = x[1:]
else:
raise Exception("unknown Preemble code %s in %s" %
(x[0], sampling))
for x in sampling[endPreamble + 1:].split('/'):
m = _rx_samp.match(x)
if not m:
raise Exception("error parsing sampling %s at %s" %
(sampling, x))
try:
sample_rate = decimal.Decimal(m.group('sample_rate'))
except decimal.InvalidOperation:
raise Exception("error parsing sampling %s at %s" %
(sampling, x))
band_code = m.group('band_code')
if not band_code:
if sample_rate >= 80:
band_code = 'H'
elif sample_rate >= 40:
band_code = 'S'
elif sample_rate > 1:
band_code = 'B'
elif sample_rate == 1:
band_code = 'L'
elif sample_rate == decimal.Decimal("0.1"):
band_code = 'V'
elif sample_rate == decimal.Decimal("0.01"):
band_code = 'U'
else:
raise Exception(
"could not determine band code for %s in %s" (
x, sampling))
for orientation in self.orientations:
code = band_code + self.gainCode + orientation
if code in self.channels:
raise Exception(
"channel code %s aready exists for rate %s " %
(band_code, sample_rate))
try:
(numerator, denominator) = parsers._rational(sample_rate)
except Exception as e:
raise Exception("Error converting sample_rate (%s)" % e)
self.channels[code] = {
'SampleRateNumerator': numerator,
'SampleRateDenominator': denominator
}
self.channels[code].update(self.orientations[orientation])