test_audioop.py 文件源码

def test_tostereo(self):
        for w in 1, 2, 4:
            data1 = datas[w]
            data2 = bytearray(2 * len(data1))
            for k in range(w):
                data2[k::2*w] = data1[k::w]
            self.assertEqual(audioop.tostereo(data1, w, 1, 0), data2)
            self.assertEqual(audioop.tostereo(data1, w, 0, 0), b'\0' * len(data2))
            for k in range(w):
                data2[k+w::2*w] = data1[k::w]
            self.assertEqual(audioop.tostereo(data1, w, 1, 1), data2)