test_audioop.py 文件源码

def test_lin2lin(self):
        for w in 1, 2, 3, 4:
            self.assertEqual(audioop.lin2lin(datas[w], w, w), datas[w])
            self.assertEqual(audioop.lin2lin(bytearray(datas[w]), w, w),
                             datas[w])
            self.assertEqual(audioop.lin2lin(memoryview(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, 3),
            packs[3](0, 0x120000, 0x450000, -0x450000,
                     0x7f0000, -0x800000, -0x10000))
        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, 3),
            packs[3](0, 0x123400, 0x456700, -0x456700,
                     0x7fff00, -0x800000, -0x100))
        self.assertEqual(audioop.lin2lin(datas[2], 2, 4),
            packs[4](0, 0x12340000, 0x45670000, -0x45670000,
                     0x7fff0000, -0x80000000, -0x10000))
        self.assertEqual(audioop.lin2lin(datas[3], 3, 1),
            b'\x00\x12\x45\xba\x7f\x80\xff')
        self.assertEqual(audioop.lin2lin(datas[3], 3, 2),
            packs[2](0, 0x1234, 0x4567, -0x4568, 0x7fff, -0x8000, -1))
        self.assertEqual(audioop.lin2lin(datas[3], 3, 4),
            packs[4](0, 0x12345600, 0x45678900, -0x45678900,
                     0x7fffff00, -0x80000000, -0x100))
        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))
        self.assertEqual(audioop.lin2lin(datas[4], 4, 3),
            packs[3](0, 0x123456, 0x456789, -0x45678a,
                     0x7fffff, -0x800000, -1))