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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport audioop import sys import unittest def pack(width, data): return b''.join(v.to_bytes(width, sys.byteorder, signed=True) for v in data) def unpack(width, data): return [int.from_bytes(data[i: i + width], sys.byteorder, signed=True) for i in range(0, len(data), width)] packs = {w: (lambda *data, width=w: pack(width, data)) for w in (1, 2, 3, 4)} maxvalues = {w: (1 << (8 * w - 1)) - 1 for w in (1, 2, 3, 4)} minvalues = {w: -1 << (8 * w - 1) for w in (1, 2, 3, 4)} datas = { 1: b'\x00\x12\x45\xbb\x7f\x80\xff', 2: packs[2](0, 0x1234, 0x4567, -0x4567, 0x7fff, -0x8000, -1), 3: packs[3](0, 0x123456, 0x456789, -0x456789, 0x7fffff, -0x800000, -1), 4: packs[4](0, 0x12345678, 0x456789ab, -0x456789ab, 0x7fffffff, -0x80000000, -1), } INVALID_DATA = [ (b'abc', 0), (b'abc', 2), (b'ab', 3), (b'abc', 4), ] class TestAudioop(unittest.TestCase): def test_max(self): for w in 1, 2, 3, 4: self.assertEqual(audioop.max(b'', w), 0) self.assertEqual(audioop.max(bytearray(), w), 0) self.assertEqual(audioop.max(memoryview(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, 3, 4: self.assertEqual(audioop.minmax(b'', w), (0x7fffffff, -0x80000000)) self.assertEqual(audioop.minmax(bytearray(), w), (0x7fffffff, -0x80000000)) self.assertEqual(audioop.minmax(memoryview(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, 3, 4: self.assertEqual(audioop.maxpp(b'', w), 0) self.assertEqual(audioop.maxpp(bytearray(), w), 0) self.assertEqual(audioop.maxpp(memoryview(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, 3, 4: self.assertEqual(audioop.avg(b'', w), 0) self.assertEqual(audioop.avg(bytearray(), w), 0) self.assertEqual(audioop.avg(memoryview(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, 3, 4: self.assertEqual(audioop.avgpp(b'', w), 0) self.assertEqual(audioop.avgpp(bytearray(), w), 0) self.assertEqual(audioop.avgpp(memoryview(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[3], 3), 12937096) self.assertEqual(audioop.avgpp(datas[4], 4), 3311897002) def test_rms(self): for w in 1, 2, 3, 4: self.assertEqual(audioop.rms(b'', w), 0) self.assertEqual(audioop.rms(bytearray(), w), 0) self.assertEqual(audioop.rms(memoryview(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[3], 3), 5120523) self.assertEqual(audioop.rms(datas[4], 4), 1310854152) def test_cross(self): for w in 1, 2, 3, 4: self.assertEqual(audioop.cross(b'', w), -1) self.assertEqual(audioop.cross(bytearray(), w), -1) self.assertEqual(audioop.cross(memoryview(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, 3, 4: self.assertEqual(audioop.add(b'', b'', w), b'') self.assertEqual(audioop.add(bytearray(), bytearray(), w), b'') self.assertEqual(audioop.add(memoryview(b''), memoryview(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[3], datas[3], 3), packs[3](0, 0x2468ac, 0x7fffff, -0x800000, 0x7fffff, -0x800000, -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, 3, 4: for bias in 0, 1, -1, 127, -128, 0x7fffffff, -0x80000000: self.assertEqual(audioop.bias(b'', w, bias), b'') self.assertEqual(audioop.bias(bytearray(), w, bias), b'') self.assertEqual(audioop.bias(memoryview(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[3], 3, 1), packs[3](1, 0x123457, 0x45678a, -0x456788, -0x800000, -0x7fffff, 0)) self.assertEqual(audioop.bias(datas[3], 3, -1), packs[3](-1, 0x123455, 0x456788, -0x45678a, 0x7ffffe, 0x7fffff, -2)) self.assertEqual(audioop.bias(datas[3], 3, 0x7fffffff), packs[3](-1, 0x123455, 0x456788, -0x45678a, 0x7ffffe, 0x7fffff, -2)) self.assertEqual(audioop.bias(datas[3], 3, -0x80000000), datas[3]) 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, 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)) 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(bytearray(b'\x07\x7f\x7f'), 1, None), (b'\x00\x00\x00\xff\x00\xff', (-179, 40))) self.assertEqual(audioop.adpcm2lin(memoryview(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', 3, None), (packs[3](0, 0xb00, 0x2900, -0x1600, 0x7200, -0xb300), (-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, 3, 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(bytearray(datas[1]), 1, None), (b'\x07\x7f\x7f', (-221, 39))) self.assertEqual(audioop.lin2adpcm(memoryview(datas[1]), 1, None), (b'\x07\x7f\x7f', (-221, 39))) for w in 2, 3, 4: self.assertEqual(audioop.lin2adpcm(datas[w], w, None), (b'\x07\x7f\x7f', (31, 39))) # Very cursory test for w in 1, 2, 3, 4: self.assertEqual(audioop.lin2adpcm(b'\0' * w * 10, w, None), (b'\0' * 5, (0, 0))) def test_invalid_adpcm_state(self): # state must be a tuple or None, not an integer self.assertRaises(TypeError, audioop.adpcm2lin, b'\0', 1, 555) self.assertRaises(TypeError, audioop.lin2adpcm, b'\0', 1, 555) # Issues #24456, #24457: index out of range self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0, -1)) self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0, 89)) self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0, -1)) self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0, 89)) # value out of range self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (-0x8001, 0)) self.assertRaises(ValueError, audioop.adpcm2lin, b'\0', 1, (0x8000, 0)) self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (-0x8001, 0)) self.assertRaises(ValueError, audioop.lin2adpcm, b'\0', 1, (0x8000, 0)) def test_lin2alaw(self): self.assertEqual(audioop.lin2alaw(datas[1], 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') self.assertEqual(audioop.lin2alaw(bytearray(datas[1]), 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') self.assertEqual(audioop.lin2alaw(memoryview(datas[1]), 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') for w in 2, 3, 4: self.assertEqual(audioop.lin2alaw(datas[w], w), 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, 3, 4: decoded = packs[w](*(x << (w * 8) >> 13 for x in src)) self.assertEqual(audioop.alaw2lin(encoded, w), decoded) self.assertEqual(audioop.alaw2lin(bytearray(encoded), w), decoded) self.assertEqual(audioop.alaw2lin(memoryview(encoded), w), decoded) encoded = bytes(range(256)) for w in 2, 3, 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(bytearray(datas[1]), 1), b'\xff\xad\x8e\x0e\x80\x00\x67') self.assertEqual(audioop.lin2ulaw(memoryview(datas[1]), 1), b'\xff\xad\x8e\x0e\x80\x00\x67') for w in 2, 3, 4: self.assertEqual(audioop.lin2ulaw(datas[w], w), 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, 3, 4: decoded = packs[w](*(x << (w * 8) >> 14 for x in src)) self.assertEqual(audioop.ulaw2lin(encoded, w), decoded) self.assertEqual(audioop.ulaw2lin(bytearray(encoded), w), decoded) self.assertEqual(audioop.ulaw2lin(memoryview(encoded), w), decoded) # Current u-law implementation has two codes fo 0: 0x7f and 0xff. encoded = bytes(range(127)) + bytes(range(128, 256)) for w in 2, 3, 4: decoded = audioop.ulaw2lin(encoded, w) self.assertEqual(audioop.lin2ulaw(decoded, w), encoded) def test_mul(self): for w in 1, 2, 3, 4: self.assertEqual(audioop.mul(b'', w, 2), b'') self.assertEqual(audioop.mul(bytearray(), w, 2), b'') self.assertEqual(audioop.mul(memoryview(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[3], 3, 2), packs[3](0, 0x2468ac, 0x7fffff, -0x800000, 0x7fffff, -0x800000, -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, 3, 4: self.assertEqual(audioop.ratecv(b'', w, 1, 8000, 8000, None), (b'', (-1, ((0, 0),)))) self.assertEqual(audioop.ratecv(bytearray(), w, 1, 8000, 8000, None), (b'', (-1, ((0, 0),)))) self.assertEqual(audioop.ratecv(memoryview(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]) self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 1, 0)[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, 3, 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) expected = { 1: packs[1](0, 0x0d, 0x37, -0x26, 0x55, -0x4b, -0x14), 2: packs[2](0, 0x0da7, 0x3777, -0x2630, 0x5673, -0x4a64, -0x129a), 3: packs[3](0, 0x0da740, 0x377776, -0x262fca, 0x56740c, -0x4a62fd, -0x1298c0), 4: packs[4](0, 0x0da740da, 0x37777776, -0x262fc962, 0x56740da6, -0x4a62fc96, -0x1298bf26), } for w in 1, 2, 3, 4: self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 3, 1)[0], expected[w]) self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 30, 10)[0], expected[w]) self.assertRaises(TypeError, audioop.ratecv, b'', 1, 1, 8000, 8000, 42) self.assertRaises(TypeError, audioop.ratecv, b'', 1, 1, 8000, 8000, (1, (42,))) def test_reverse(self): for w in 1, 2, 3, 4: self.assertEqual(audioop.reverse(b'', w), b'') self.assertEqual(audioop.reverse(bytearray(), w), b'') self.assertEqual(audioop.reverse(memoryview(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, 3, 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(data2, w, 1, 0), data1) self.assertEqual(audioop.tomono(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(data2, w, 0.5, 0.5), data1) self.assertEqual(audioop.tomono(bytearray(data2), w, 0.5, 0.5), data1) self.assertEqual(audioop.tomono(memoryview(data2), w, 0.5, 0.5), data1) def test_tostereo(self): for w in 1, 2, 3, 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) self.assertEqual(audioop.tostereo(bytearray(data1), w, 1, 1), data2) self.assertEqual(audioop.tostereo(memoryview(data1), w, 1, 1), data2) def test_findfactor(self): self.assertEqual(audioop.findfactor(datas[2], datas[2]), 1.0) self.assertEqual(audioop.findfactor(bytearray(datas[2]), bytearray(datas[2])), 1.0) self.assertEqual(audioop.findfactor(memoryview(datas[2]), memoryview(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(bytearray(datas[2]), bytearray(datas[2])), (0, 1.0)) self.assertEqual(audioop.findfit(memoryview(datas[2]), memoryview(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) self.assertEqual(audioop.findmax(bytearray(datas[2]), 1), 5) self.assertEqual(audioop.findmax(memoryview(datas[2]), 1), 5) def test_getsample(self): for w in 1, 2, 3, 4: data = packs[w](0, 1, -1, maxvalues[w], minvalues[w]) self.assertEqual(audioop.getsample(data, w, 0), 0) self.assertEqual(audioop.getsample(bytearray(data), w, 0), 0) self.assertEqual(audioop.getsample(memoryview(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_byteswap(self): swapped_datas = { 1: datas[1], 2: packs[2](0, 0x3412, 0x6745, -0x6646, -0x81, 0x80, -1), 3: packs[3](0, 0x563412, -0x7698bb, 0x7798ba, -0x81, 0x80, -1), 4: packs[4](0, 0x78563412, -0x547698bb, 0x557698ba, -0x81, 0x80, -1), } for w in 1, 2, 3, 4: self.assertEqual(audioop.byteswap(b'', w), b'') self.assertEqual(audioop.byteswap(datas[w], w), swapped_datas[w]) self.assertEqual(audioop.byteswap(swapped_datas[w], w), datas[w]) self.assertEqual(audioop.byteswap(bytearray(datas[w]), w), swapped_datas[w]) self.assertEqual(audioop.byteswap(memoryview(datas[w]), w), swapped_datas[w]) def test_negativelen(self): # from issue 3306, previously it segfaulted self.assertRaises(audioop.error, audioop.findmax, bytes(range(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_string(self): data = 'abcd' size = 2 self.assertRaises(TypeError, audioop.getsample, data, size, 0) self.assertRaises(TypeError, audioop.max, data, size) self.assertRaises(TypeError, audioop.minmax, data, size) self.assertRaises(TypeError, audioop.avg, data, size) self.assertRaises(TypeError, audioop.rms, data, size) self.assertRaises(TypeError, audioop.avgpp, data, size) self.assertRaises(TypeError, audioop.maxpp, data, size) self.assertRaises(TypeError, audioop.cross, data, size) self.assertRaises(TypeError, audioop.mul, data, size, 1.0) self.assertRaises(TypeError, audioop.tomono, data, size, 0.5, 0.5) self.assertRaises(TypeError, audioop.tostereo, data, size, 0.5, 0.5) self.assertRaises(TypeError, audioop.add, data, data, size) self.assertRaises(TypeError, audioop.bias, data, size, 0) self.assertRaises(TypeError, audioop.reverse, data, size) self.assertRaises(TypeError, audioop.lin2lin, data, size, size) self.assertRaises(TypeError, audioop.ratecv, data, size, 1, 1, 1, None) self.assertRaises(TypeError, audioop.lin2ulaw, data, size) self.assertRaises(TypeError, audioop.lin2alaw, data, size) self.assertRaises(TypeError, audioop.lin2adpcm, data, size, None) def test_wrongsize(self): data = b'abcdefgh' state = None for size in (-1, 0, 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) if __name__ == '__main__': unittest.main()