ds_test.py 文件源码

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()