wave.py 文件源码

def writeframesraw(self, data):
        self._ensure_header_written(len(data))
        nframes = len(data) // (self._sampwidth * self._nchannels)
        if self._convert:
            data = self._convert(data)
        if self._sampwidth in (2, 4) and sys.byteorder == 'big':
            import array
            a = array.array(_array_fmts[self._sampwidth])
            a.fromstring(data)
            data = a
            assert data.itemsize == self._sampwidth
            data.byteswap()
            data.tofile(self._file)
            self._datawritten = self._datawritten + len(data) * self._sampwidth
        else:
            if self._sampwidth == 3 and sys.byteorder == 'big':
                data = _byteswap3(data)
            self._file.write(data)
            self._datawritten = self._datawritten + len(data)
        self._nframeswritten = self._nframeswritten + nframes