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- # Copyright (c) Alibaba, Inc. and its affiliates.
- from struct import *
- __all__=['wav2pcm', 'GetDefaultContext']
- def GetDefaultContext():
- """
- Return Default Context Object
- """
- return {
- 'sdk': {
- 'name': 'nls-python-sdk',
- 'version': '0.0.1',
- 'language': 'python'
- }
- }
- def wav2pcm(wavfile, pcmfile):
- """
- Turn wav into pcm
-
- Parameters
- ----------
- wavfile: str
- wav file path
- pcmfile: str
- output pcm file path
- """
- with open(wavfile, 'rb') as i, open(pcmfile, 'wb') as o:
- i.seek(0)
- _id = i.read(4)
- _id = unpack('>I', _id)
- _size = i.read(4)
- _size = unpack('<I', _size)
- _type = i.read(4)
- _type = unpack('>I', _type)
- if _id[0] != 0x52494646 or _type[0] != 0x57415645:
- raise ValueError('not a wav!')
- i.read(32)
- result = i.read()
- o.write(result)
|
