def testRecord(self):
d = ds.DirectSoundCaptureCreate(None, None)
sdesc = ds.DSCBUFFERDESC()
sdesc.dwBufferBytes = 352800 # 2 seconds
sdesc.lpwfxFormat = pywintypes.WAVEFORMATEX()
sdesc.lpwfxFormat.wFormatTag = pywintypes.WAVE_FORMAT_PCM
sdesc.lpwfxFormat.nChannels = 2
sdesc.lpwfxFormat.nSamplesPerSec = 44100
sdesc.lpwfxFormat.nAvgBytesPerSec = 176400
sdesc.lpwfxFormat.nBlockAlign = 4
sdesc.lpwfxFormat.wBitsPerSample = 16
buffer = d.CreateCaptureBuffer(sdesc)
event = win32event.CreateEvent(None, 0, 0, None)
notify = buffer.QueryInterface(ds.IID_IDirectSoundNotify)
notify.SetNotificationPositions((ds.DSBPN_OFFSETSTOP, event))
buffer.Start(0)
win32event.WaitForSingleObject(event, -1)
event.Close()
data = buffer.Update(0, 352800)
fname = os.path.join(win32api.GetTempPath(),
'test_directsound_record.wav')
f = open(fname, 'wb')
f.write(wav_header_pack(sdesc.lpwfxFormat, 352800))
f.write(data)
f.close()
def __init__(self, nchnl=1, sps=16000, bps=16, t=0.1):
dsc = directsound.DirectSoundCaptureCreate(None, None) #创建设备对象
cdesc = directsound.DSCBUFFERDESC() #创建DSCBUFFERDESC结构对象
self.bSize = int(sps * nchnl * bps / 8 * t)
cdesc.dwBufferBytes = self.bSize #缓存大小
cdesc.lpwfxFormat = pywintypes.WAVEFORMATEX() #DirectSound数据块格式
cdesc.lpwfxFormat.wFormatTag = pywintypes.WAVE_FORMAT_PCM
cdesc.lpwfxFormat.nChannels = nchnl
cdesc.lpwfxFormat.nSamplesPerSec = sps
cdesc.lpwfxFormat.nAvgBytesPerSec = int(sps * nchnl * bps / 8)
cdesc.lpwfxFormat.nBlockAlign = int(nchnl * bps / 8)
cdesc.lpwfxFormat.wBitsPerSample = bps
self.buffer = dsc.CreateCaptureBuffer(cdesc) #创建缓冲区对象
self.evt = []
for i in range(2):
self.evt.append(win32event.CreateEvent(None, 0, 0,
None)) #创建两个事件通知
Notify = self.buffer.QueryInterface(
directsound.IID_IDirectSoundNotify) #创建事件通知接口
Notify.SetNotificationPositions([
(int(self.bSize / 2) - 1, self.evt[0]),
(self.bSize - 1, self.evt[1])
]) #error
#设置两个通知位置，缓冲区每填充bSize/2个样本即发送一个通知消息
self.data = b'' #用于实时存储捕获的音频数据
self.STATUS = False #录音状态标志
self.wfx = cdesc.lpwfxFormat #存储声音格式
def test_2_Attr(self):
'DSCBUFFERDESC attribute access'
c = ds.DSCBUFFERDESC()
c.dwFlags = 1
c.dwBufferBytes = 2
c.lpwfxFormat = pywintypes.WAVEFORMATEX()
c.lpwfxFormat.wFormatTag = pywintypes.WAVE_FORMAT_PCM
c.lpwfxFormat.nChannels = 2
c.lpwfxFormat.nSamplesPerSec = 44100
c.lpwfxFormat.nAvgBytesPerSec = 176400
c.lpwfxFormat.nBlockAlign = 4
c.lpwfxFormat.wBitsPerSample = 16
self.failUnless(c.dwFlags == 1)
self.failUnless(c.dwBufferBytes == 2)
self.failUnless(c.lpwfxFormat.wFormatTag == 1)
self.failUnless(c.lpwfxFormat.nChannels == 2)
self.failUnless(c.lpwfxFormat.nSamplesPerSec == 44100)
self.failUnless(c.lpwfxFormat.nAvgBytesPerSec == 176400)
self.failUnless(c.lpwfxFormat.nBlockAlign == 4)
self.failUnless(c.lpwfxFormat.wBitsPerSample == 16)
import win32event
import win32com.directsound.directsound as ds
def wav_header_pack(wfx, datasize):
return struct.pack('<4sl4s4slhhllhh4sl', 'RIFF', 36 + datasize, 'WAVE',
'fmt ', 16, wfx.wFormatTag, wfx.nChannels,
wfx.nSamplesPerSec, wfx.nAvgBytesPerSec,
wfx.nBlockAlign, wfx.wBitsPerSample, 'data', datasize)
d = ds.DirectSoundCaptureCreate(None, None)
sdesc = ds.DSCBUFFERDESC()
sdesc.dwBufferBytes = 352800 # 2 seconds
sdesc.lpwfxFormat = pywintypes.WAVEFORMATEX()
sdesc.lpwfxFormat.wFormatTag = pywintypes.WAVE_FORMAT_PCM
sdesc.lpwfxFormat.nChannels = 2
sdesc.lpwfxFormat.nSamplesPerSec = 44100
sdesc.lpwfxFormat.nAvgBytesPerSec = 176400
sdesc.lpwfxFormat.nBlockAlign = 4
def test_3_invalid_format(self):
'DSCBUFFERDESC invalid lpwfxFormat assignment'
c = ds.DSCBUFFERDESC()
self.failUnlessRaises(ValueError, self.invalid_format, c)
def test_1_Type(self):
'DSCBUFFERDESC type'
c = ds.DSCBUFFERDESC()
self.failUnless(type(c) == ds.DSCBUFFERDESCType)
def test_3_invalid_format(self):
"DSCBUFFERDESC invalid lpwfxFormat assignment"
c = ds.DSCBUFFERDESC()
self.assertRaises(ValueError, self.invalid_format, c)
def test_1_Type(self):
"DSCBUFFERDESC type"
c = ds.DSCBUFFERDESC()
self.assertTrue(type(c) == ds.DSCBUFFERDESCType)
def test_1_Type(self):
'DSCBUFFERDESC type'
c = ds.DSCBUFFERDESC()
self.assertTrue(isinstance(c, ds.DSCBUFFERDESCType))
