Python调用系统底层API播放wav文件的方法

# Our raison d'etre - playing sounds
import pywintypes
import struct
import win32event
import win32com.directsound.directsound as ds
import os
WAV_HEADER_SIZE = struct.calcsize('<4sl4s4slhhllhh4sl')
def wav_header_unpack(data):
  '''解包wav文件头信息'''
  (riff,riffsize,wave,fmt,fmtsize,format,nchannels,samplespersecond,

  datarate,blockalign,bitspersample,data,datalength) = struct.unpack('<4sl4s4slhhllhh4sl',data)
  if riff != b'RIFF' or fmtsize != 16 or fmt != b'fmt ' or data != b'data':
    raise ValueError
  wfx = pywintypes.WAVEFORMATEX()
  wfx.wFormatTag = format
  wfx.nChannels = nchannels
  wfx.nSamplesPerSec = samplespersecond
  wfx.nAvgBytesPerSec = datarate
  wfx.nBlockAlign = blockalign
  wfx.wBitsPerSample = bitspersample
  return wfx,datalength
# 播放wav文件，直到结束
sound_file = "音效-足球观众的欢呼声.wav"
fname = os.path.join(os.path.dirname(__file__),sound_file)
f = open(fname,'rb')
# 读取/解包wav文件头
hdr = f.read(WAV_HEADER_SIZE)
wfx,size = wav_header_unpack(hdr)
d = ds.DirectSoundCreate(None,None)
d.SetCooperativeLevel(None,ds.DSSCL_PRIORITY)
sdesc = ds.DSBUFFERDESC()
sdesc.dwFlags = ds.DSBCAPS_STICKYFOCUS | ds.DSBCAPS_CTRLPOSITIONNOTIFY
sdesc.dwBufferBytes = size
sdesc.lpwfxFormat = wfx
buffer = d.CreateSoundBuffer(sdesc,None)
event = win32event.CreateEvent(None,None)
notify = buffer.QueryInterface(ds.IID_IDirectSoundNotify)
notify.SetNotificationPositions((ds.DSBPN_OFFSETSTOP,event))
buffer.Update(0,f.read(size))
buffer.Play(0)
win32event.WaitForSingleObject(event,-1)