class InbandDtmfDetector:
def __init__(self, leg):
from shtoom.doug.dtmf import DtmfDetector
self.leg = leg
self.prev = None
self.D = DtmfDetector()
self.digit = ''
def __call__(self, samp):
if self.prev is None:
self.prev = samp
return
nd = self.D.detect(self.prev + samp)
if nd != self.digit:
if self.digit == '':
self.digit = nd
self.leg.leg_startDTMFevent(nd)
elif nd == '':
old, self.digit = self.digit, nd
self.leg.leg_stopDTMFevent(old)
else:
old, self.digit = nd, self.digit
self.leg.leg_stopDTMFevent(old)
self.leg.leg_startDTMFevent(self.digit)
self.prev = samp
def test_dtmfdetection_canned(self):
from shtoom.doug.dtmf import DtmfDetector
fp = open(getDTMFAudioFile(),'rb')
dtmf = DtmfDetector()
seen = []
cur = None
while True:
data = fp.read(640)
if len(data) != 640:
break
digit = dtmf.detect(data)
if digit != cur:
seen.append(digit)
cur = digit
self.assertEquals(seen, ['', '3', '', '1', '', '4', '', '1', '', '#'])
class InbandDtmfDetector:
def __init__(self, leg):
from shtoom.doug.dtmf import DtmfDetector
self.leg = leg
self.prev = None
self.D = DtmfDetector()
self.digit = ''
def __call__(self, samp):
if self.prev is None:
self.prev = samp
return
nd = self.D.detect(self.prev+samp)
if nd != self.digit:
if self.digit == '':
self.digit = nd
self.leg.leg_startDTMFevent(nd)
elif nd == '':
old, self.digit = self.digit, nd
self.leg.leg_stopDTMFevent(old)
else:
old, self.digit = nd, self.digit
self.leg.leg_stopDTMFevent(old)
self.leg.leg_startDTMFevent(self.digit)
self.prev = samp