test_audioop.py 文件源码

def test_lin2lin(self):
        for w in 1, 2, 4:
            self.assertEqual(audioop.lin2lin(datas[w], w, w), datas[w])

        self.assertEqual(audioop.lin2lin(datas[1], 1, 2),
            packs[2](0, 0x1200, 0x4500, -0x4500, 0x7f00, -0x8000, -0x100))
        self.assertEqual(audioop.lin2lin(datas[1], 1, 4),
            packs[4](0, 0x12000000, 0x45000000, -0x45000000,
                     0x7f000000, -0x80000000, -0x1000000))
        self.assertEqual(audioop.lin2lin(datas[2], 2, 1),
            b'\x00\x12\x45\xba\x7f\x80\xff')
        self.assertEqual(audioop.lin2lin(datas[2], 2, 4),
            packs[4](0, 0x12340000, 0x45670000, -0x45670000,
                     0x7fff0000, -0x80000000, -0x10000))
        self.assertEqual(audioop.lin2lin(datas[4], 4, 1),
            b'\x00\x12\x45\xba\x7f\x80\xff')
        self.assertEqual(audioop.lin2lin(datas[4], 4, 2),
            packs[2](0, 0x1234, 0x4567, -0x4568, 0x7fff, -0x8000, -1))