28 lines
638 B
Python
28 lines
638 B
Python
#!/usr/bin/env python
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from struct import calcsize, unpack
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from sys import argv, exit
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def word_iter(f):
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while True:
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_bytes = f.read(2)
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if len(_bytes) != 2:
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raise StopIteration
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yield unpack("=h", _bytes)[0]
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try:
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with open(argv[1], "rb") as f:
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wav = "=4ci8cihhiihh4ci"
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wav_size = calcsize(wav)
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metadata = unpack(wav, f.read(wav_size))
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if "".join(metadata[:4]) != "RIFF":
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print "error: not wav file."
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exit(1)
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print sum(abs(word) for word in word_iter(f))
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except IOError:
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print "error: can't open input file '%s'." % argv[1]
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exit(1)
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