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fix window size

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This commit is contained in:
Jinghao Shi 2017-04-21 13:40:46 -04:00
parent cc5effe283
commit 2315d0fc74
1 changed files with 5 additions and 3 deletions
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8
scripts/decode.py
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@ -416,7 +416,7 @@ class HTSignal(object):
class Decoder(object): class Decoder(object):
def __init__(self, path, power_thres=200, skip=1e6, window=160): def __init__(self, path, power_thres=200, skip=0, window=80):
if path is not None: if path is not None:
self.fh = open(path, 'rb') self.fh = open(path, 'rb')
size = os.path.getsize(path) size = os.path.getsize(path)
@ -432,8 +432,9 @@ class Decoder(object):
trigger = False trigger = False
samples = [] samples = []
glbl_index = 0 glbl_index = 0
while True: while True:
chunk = array.array('h', self.fh.read(self.window)) chunk = array.array('h', self.fh.read(self.window*4))
chunk = [complex(i, q) for i, q in zip(chunk[::2], chunk[1::2])] chunk = [complex(i, q) for i, q in zip(chunk[::2], chunk[1::2])]
if not trigger and any([abs(c) > self.power_thres for c in chunk]): if not trigger and any([abs(c) > self.power_thres for c in chunk]):
trigger = True trigger = True
@ -453,7 +454,8 @@ class Decoder(object):
else: else:
print "Decoding packet starting from sample %d" %\ print "Decoding packet starting from sample %d" %\
(glbl_index + start) (glbl_index + start)
return self.decode(samples[start:], *args, **kwargs) return (glbl_index, ) +\
self.decode(samples[start:], *args, **kwargs)
def find_pkt(self, samples): def find_pkt(self, samples):
""" """