diff options
Diffstat (limited to 'lib/python2.7/test/test_audioop.py')
| -rw-r--r-- | lib/python2.7/test/test_audioop.py | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_audioop.py b/lib/python2.7/test/test_audioop.py new file mode 100644 index 0000000..e5a5159 --- /dev/null +++ b/lib/python2.7/test/test_audioop.py @@ -0,0 +1,393 @@ +import audioop +import sys +import unittest +import struct +from test.test_support import run_unittest + + +formats = { + 1: 'b', + 2: 'h', + 4: 'i', +} + +def pack(width, data): + return struct.pack('=%d%s' % (len(data), formats[width]), *data) + +packs = { + 1: lambda *data: pack(1, data), + 2: lambda *data: pack(2, data), + 4: lambda *data: pack(4, data), +} +maxvalues = {w: (1 << (8 * w - 1)) - 1 for w in (1, 2, 4)} +minvalues = {w: -1 << (8 * w - 1) for w in (1, 2, 4)} + +datas = { + 1: b'\x00\x12\x45\xbb\x7f\x80\xff', + 2: packs[2](0, 0x1234, 0x4567, -0x4567, 0x7fff, -0x8000, -1), + 4: packs[4](0, 0x12345678, 0x456789ab, -0x456789ab, + 0x7fffffff, -0x80000000, -1), +} + +INVALID_DATA = [ + (b'abc', 0), + (b'abc', 2), + (b'abc', 4), +] + + +class TestAudioop(unittest.TestCase): + + def test_max(self): + for w in 1, 2, 4: + self.assertEqual(audioop.max(b'', w), 0) + p = packs[w] + self.assertEqual(audioop.max(p(5), w), 5) + self.assertEqual(audioop.max(p(5, -8, -1), w), 8) + self.assertEqual(audioop.max(p(maxvalues[w]), w), maxvalues[w]) + self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w]) + self.assertEqual(audioop.max(datas[w], w), -minvalues[w]) + + def test_minmax(self): + for w in 1, 2, 4: + self.assertEqual(audioop.minmax(b'', w), + (0x7fffffff, -0x80000000)) + p = packs[w] + self.assertEqual(audioop.minmax(p(5), w), (5, 5)) + self.assertEqual(audioop.minmax(p(5, -8, -1), w), (-8, 5)) + self.assertEqual(audioop.minmax(p(maxvalues[w]), w), + (maxvalues[w], maxvalues[w])) + self.assertEqual(audioop.minmax(p(minvalues[w]), w), + (minvalues[w], minvalues[w])) + self.assertEqual(audioop.minmax(datas[w], w), + (minvalues[w], maxvalues[w])) + + def test_maxpp(self): + for w in 1, 2, 4: + self.assertEqual(audioop.maxpp(b'', w), 0) + self.assertEqual(audioop.maxpp(packs[w](*range(100)), w), 0) + self.assertEqual(audioop.maxpp(packs[w](9, 10, 5, 5, 0, 1), w), 10) + self.assertEqual(audioop.maxpp(datas[w], w), + maxvalues[w] - minvalues[w]) + + def test_avg(self): + for w in 1, 2, 4: + self.assertEqual(audioop.avg(b'', w), 0) + p = packs[w] + self.assertEqual(audioop.avg(p(5), w), 5) + self .assertEqual(audioop.avg(p(5, 8), w), 6) + self.assertEqual(audioop.avg(p(5, -8), w), -2) + self.assertEqual(audioop.avg(p(maxvalues[w], maxvalues[w]), w), + maxvalues[w]) + self.assertEqual(audioop.avg(p(minvalues[w], minvalues[w]), w), + minvalues[w]) + self.assertEqual(audioop.avg(packs[4](0x50000000, 0x70000000), 4), + 0x60000000) + self.assertEqual(audioop.avg(packs[4](-0x50000000, -0x70000000), 4), + -0x60000000) + + def test_avgpp(self): + for w in 1, 2, 4: + self.assertEqual(audioop.avgpp(b'', w), 0) + self.assertEqual(audioop.avgpp(packs[w](*range(100)), w), 0) + self.assertEqual(audioop.avgpp(packs[w](9, 10, 5, 5, 0, 1), w), 10) + self.assertEqual(audioop.avgpp(datas[1], 1), 196) + self.assertEqual(audioop.avgpp(datas[2], 2), 50534) + self.assertEqual(audioop.avgpp(datas[4], 4), 3311897002) + + def test_rms(self): + for w in 1, 2, 4: + self.assertEqual(audioop.rms(b'', w), 0) + p = packs[w] + self.assertEqual(audioop.rms(p(*range(100)), w), 57) + self.assertAlmostEqual(audioop.rms(p(maxvalues[w]) * 5, w), + maxvalues[w], delta=1) + self.assertAlmostEqual(audioop.rms(p(minvalues[w]) * 5, w), + -minvalues[w], delta=1) + self.assertEqual(audioop.rms(datas[1], 1), 77) + self.assertEqual(audioop.rms(datas[2], 2), 20001) + self.assertEqual(audioop.rms(datas[4], 4), 1310854152) + + def test_cross(self): + for w in 1, 2, 4: + self.assertEqual(audioop.cross(b'', w), -1) + p = packs[w] + self.assertEqual(audioop.cross(p(0, 1, 2), w), 0) + self.assertEqual(audioop.cross(p(1, 2, -3, -4), w), 1) + self.assertEqual(audioop.cross(p(-1, -2, 3, 4), w), 1) + self.assertEqual(audioop.cross(p(0, minvalues[w]), w), 1) + self.assertEqual(audioop.cross(p(minvalues[w], maxvalues[w]), w), 1) + + def test_add(self): + for w in 1, 2, 4: + self.assertEqual(audioop.add(b'', b'', w), b'') + self.assertEqual(audioop.add(datas[w], b'\0' * len(datas[w]), w), + datas[w]) + self.assertEqual(audioop.add(datas[1], datas[1], 1), + b'\x00\x24\x7f\x80\x7f\x80\xfe') + self.assertEqual(audioop.add(datas[2], datas[2], 2), + packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2)) + self.assertEqual(audioop.add(datas[4], datas[4], 4), + packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000, + 0x7fffffff, -0x80000000, -2)) + + def test_bias(self): + for w in 1, 2, 4: + for bias in 0, 1, -1, 127, -128, 0x7fffffff, -0x80000000: + self.assertEqual(audioop.bias(b'', w, bias), b'') + self.assertEqual(audioop.bias(datas[1], 1, 1), + b'\x01\x13\x46\xbc\x80\x81\x00') + self.assertEqual(audioop.bias(datas[1], 1, -1), + b'\xff\x11\x44\xba\x7e\x7f\xfe') + self.assertEqual(audioop.bias(datas[1], 1, 0x7fffffff), + b'\xff\x11\x44\xba\x7e\x7f\xfe') + self.assertEqual(audioop.bias(datas[1], 1, -0x80000000), + datas[1]) + self.assertEqual(audioop.bias(datas[2], 2, 1), + packs[2](1, 0x1235, 0x4568, -0x4566, -0x8000, -0x7fff, 0)) + self.assertEqual(audioop.bias(datas[2], 2, -1), + packs[2](-1, 0x1233, 0x4566, -0x4568, 0x7ffe, 0x7fff, -2)) + self.assertEqual(audioop.bias(datas[2], 2, 0x7fffffff), + packs[2](-1, 0x1233, 0x4566, -0x4568, 0x7ffe, 0x7fff, -2)) + self.assertEqual(audioop.bias(datas[2], 2, -0x80000000), + datas[2]) + self.assertEqual(audioop.bias(datas[4], 4, 1), + packs[4](1, 0x12345679, 0x456789ac, -0x456789aa, + -0x80000000, -0x7fffffff, 0)) + self.assertEqual(audioop.bias(datas[4], 4, -1), + packs[4](-1, 0x12345677, 0x456789aa, -0x456789ac, + 0x7ffffffe, 0x7fffffff, -2)) + self.assertEqual(audioop.bias(datas[4], 4, 0x7fffffff), + packs[4](0x7fffffff, -0x6dcba989, -0x3a987656, 0x3a987654, + -2, -1, 0x7ffffffe)) + self.assertEqual(audioop.bias(datas[4], 4, -0x80000000), + packs[4](-0x80000000, -0x6dcba988, -0x3a987655, 0x3a987655, + -1, 0, 0x7fffffff)) + + 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)) + + def test_adpcm2lin(self): + self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 1, None), + (b'\x00\x00\x00\xff\x00\xff', (-179, 40))) + self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 2, None), + (packs[2](0, 0xb, 0x29, -0x16, 0x72, -0xb3), (-179, 40))) + self.assertEqual(audioop.adpcm2lin(b'\x07\x7f\x7f', 4, None), + (packs[4](0, 0xb0000, 0x290000, -0x160000, 0x720000, + -0xb30000), (-179, 40))) + + # Very cursory test + for w in 1, 2, 4: + self.assertEqual(audioop.adpcm2lin(b'\0' * 5, w, None), + (b'\0' * w * 10, (0, 0))) + + def test_lin2adpcm(self): + self.assertEqual(audioop.lin2adpcm(datas[1], 1, None), + (b'\x07\x7f\x7f', (-221, 39))) + self.assertEqual(audioop.lin2adpcm(datas[2], 2, None), + (b'\x07\x7f\x7f', (31, 39))) + self.assertEqual(audioop.lin2adpcm(datas[4], 4, None), + (b'\x07\x7f\x7f', (31, 39))) + + # Very cursory test + for w in 1, 2, 4: + self.assertEqual(audioop.lin2adpcm(b'\0' * w * 10, w, None), + (b'\0' * 5, (0, 0))) + + def test_lin2alaw(self): + self.assertEqual(audioop.lin2alaw(datas[1], 1), + b'\xd5\x87\xa4\x24\xaa\x2a\x5a') + self.assertEqual(audioop.lin2alaw(datas[2], 2), + b'\xd5\x87\xa4\x24\xaa\x2a\x55') + self.assertEqual(audioop.lin2alaw(datas[4], 4), + b'\xd5\x87\xa4\x24\xaa\x2a\x55') + + def test_alaw2lin(self): + encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\ + b'\x80\x83\xa4\xaa\xd1\xd4\xd5\xd8\xeb\xf1\xff' + src = [-688, -720, -2240, -4032, -9, -3, -1, -27, -244, -82, -106, + 688, 720, 2240, 4032, 9, 3, 1, 27, 244, 82, 106] + for w in 1, 2, 4: + self.assertEqual(audioop.alaw2lin(encoded, w), + packs[w](*(x << (w * 8) >> 13 for x in src))) + + encoded = ''.join(chr(x) for x in xrange(256)) + for w in 2, 4: + decoded = audioop.alaw2lin(encoded, w) + self.assertEqual(audioop.lin2alaw(decoded, w), encoded) + + def test_lin2ulaw(self): + self.assertEqual(audioop.lin2ulaw(datas[1], 1), + b'\xff\xad\x8e\x0e\x80\x00\x67') + self.assertEqual(audioop.lin2ulaw(datas[2], 2), + b'\xff\xad\x8e\x0e\x80\x00\x7e') + self.assertEqual(audioop.lin2ulaw(datas[4], 4), + b'\xff\xad\x8e\x0e\x80\x00\x7e') + + def test_ulaw2lin(self): + encoded = b'\x00\x0e\x28\x3f\x57\x6a\x76\x7c\x7e\x7f'\ + b'\x80\x8e\xa8\xbf\xd7\xea\xf6\xfc\xfe\xff' + src = [-8031, -4447, -1471, -495, -163, -53, -18, -6, -2, 0, + 8031, 4447, 1471, 495, 163, 53, 18, 6, 2, 0] + for w in 1, 2, 4: + self.assertEqual(audioop.ulaw2lin(encoded, w), + packs[w](*(x << (w * 8) >> 14 for x in src))) + + # Current u-law implementation has two codes fo 0: 0x7f and 0xff. + encoded = ''.join(chr(x) for x in range(127) + range(128, 256)) + for w in 2, 4: + decoded = audioop.ulaw2lin(encoded, w) + self.assertEqual(audioop.lin2ulaw(decoded, w), encoded) + + def test_mul(self): + for w in 1, 2, 4: + self.assertEqual(audioop.mul(b'', w, 2), b'') + self.assertEqual(audioop.mul(datas[w], w, 0), + b'\0' * len(datas[w])) + self.assertEqual(audioop.mul(datas[w], w, 1), + datas[w]) + self.assertEqual(audioop.mul(datas[1], 1, 2), + b'\x00\x24\x7f\x80\x7f\x80\xfe') + self.assertEqual(audioop.mul(datas[2], 2, 2), + packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2)) + self.assertEqual(audioop.mul(datas[4], 4, 2), + packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000, + 0x7fffffff, -0x80000000, -2)) + + def test_ratecv(self): + for w in 1, 2, 4: + self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 8000, None), + (b'', (-1, ((0, 0),)))) + self.assertEqual(audioop.ratecv(b'', w, 5, 8000, 8000, None), + (b'', (-1, ((0, 0),) * 5))) + self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 16000, None), + (b'', (-2, ((0, 0),)))) + self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None)[0], + datas[w]) + state = None + d1, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state) + d2, state = audioop.ratecv(b'\x00\x01\x02', 1, 1, 8000, 16000, state) + self.assertEqual(d1 + d2, b'\000\000\001\001\002\001\000\000\001\001\002') + + for w in 1, 2, 4: + d0, state0 = audioop.ratecv(datas[w], w, 1, 8000, 16000, None) + d, state = b'', None + for i in range(0, len(datas[w]), w): + d1, state = audioop.ratecv(datas[w][i:i + w], w, 1, + 8000, 16000, state) + d += d1 + self.assertEqual(d, d0) + self.assertEqual(state, state0) + + def test_reverse(self): + for w in 1, 2, 4: + self.assertEqual(audioop.reverse(b'', w), b'') + self.assertEqual(audioop.reverse(packs[w](0, 1, 2), w), + packs[w](2, 1, 0)) + + def test_tomono(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.tomono(str(data2), w, 1, 0), data1) + self.assertEqual(audioop.tomono(str(data2), w, 0, 1), b'\0' * len(data1)) + for k in range(w): + data2[k+w::2*w] = data1[k::w] + self.assertEqual(audioop.tomono(str(data2), w, 0.5, 0.5), data1) + + 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) + + def test_findfactor(self): + self.assertEqual(audioop.findfactor(datas[2], datas[2]), 1.0) + self.assertEqual(audioop.findfactor(b'\0' * len(datas[2]), datas[2]), + 0.0) + + def test_findfit(self): + self.assertEqual(audioop.findfit(datas[2], datas[2]), (0, 1.0)) + self.assertEqual(audioop.findfit(datas[2], packs[2](1, 2, 0)), + (1, 8038.8)) + self.assertEqual(audioop.findfit(datas[2][:-2] * 5 + datas[2], datas[2]), + (30, 1.0)) + + def test_findmax(self): + self.assertEqual(audioop.findmax(datas[2], 1), 5) + + def test_getsample(self): + for w in 1, 2, 4: + data = packs[w](0, 1, -1, maxvalues[w], minvalues[w]) + self.assertEqual(audioop.getsample(data, w, 0), 0) + self.assertEqual(audioop.getsample(data, w, 1), 1) + self.assertEqual(audioop.getsample(data, w, 2), -1) + self.assertEqual(audioop.getsample(data, w, 3), maxvalues[w]) + self.assertEqual(audioop.getsample(data, w, 4), minvalues[w]) + + def test_negativelen(self): + # from issue 3306, previously it segfaulted + self.assertRaises(audioop.error, + audioop.findmax, ''.join( chr(x) for x in xrange(256)), -2392392) + + def test_issue7673(self): + state = None + for data, size in INVALID_DATA: + size2 = size + self.assertRaises(audioop.error, audioop.getsample, data, size, 0) + self.assertRaises(audioop.error, audioop.max, data, size) + self.assertRaises(audioop.error, audioop.minmax, data, size) + self.assertRaises(audioop.error, audioop.avg, data, size) + self.assertRaises(audioop.error, audioop.rms, data, size) + self.assertRaises(audioop.error, audioop.avgpp, data, size) + self.assertRaises(audioop.error, audioop.maxpp, data, size) + self.assertRaises(audioop.error, audioop.cross, data, size) + self.assertRaises(audioop.error, audioop.mul, data, size, 1.0) + self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5) + self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5) + self.assertRaises(audioop.error, audioop.add, data, data, size) + self.assertRaises(audioop.error, audioop.bias, data, size, 0) + self.assertRaises(audioop.error, audioop.reverse, data, size) + self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2) + self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state) + self.assertRaises(audioop.error, audioop.lin2ulaw, data, size) + self.assertRaises(audioop.error, audioop.lin2alaw, data, size) + self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state) + + def test_wrongsize(self): + data = b'abcdefgh' + state = None + for size in (-1, 0, 3, 5, 1024): + self.assertRaises(audioop.error, audioop.ulaw2lin, data, size) + self.assertRaises(audioop.error, audioop.alaw2lin, data, size) + self.assertRaises(audioop.error, audioop.adpcm2lin, data, size, state) + +def test_main(): + run_unittest(TestAudioop) + +if __name__ == '__main__': + test_main() |