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98 lines
3.1 KiB
Python
98 lines
3.1 KiB
Python
from test import test_support
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test_support.requires('audio')
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from test.test_support import findfile, run_unittest
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import errno
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linuxaudiodev = test_support.import_module('linuxaudiodev', deprecated=True)
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import sys
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import sunaudio
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import audioop
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import unittest
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SND_FORMAT_MULAW_8 = 1
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class LinuxAudioDevTests(unittest.TestCase):
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def setUp(self):
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self.dev = linuxaudiodev.open('w')
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def tearDown(self):
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self.dev.close()
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def test_methods(self):
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# at least check that these methods can be invoked
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self.dev.bufsize()
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self.dev.obufcount()
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self.dev.obuffree()
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self.dev.getptr()
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self.dev.fileno()
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def test_play_sound_file(self):
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path = findfile("audiotest.au")
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fp = open(path, 'r')
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size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)
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data = fp.read()
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fp.close()
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if enc != SND_FORMAT_MULAW_8:
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self.fail("Expect .au file with 8-bit mu-law samples")
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# convert the data to 16-bit signed
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data = audioop.ulaw2lin(data, 2)
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# set the data format
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if sys.byteorder == 'little':
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fmt = linuxaudiodev.AFMT_S16_LE
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else:
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fmt = linuxaudiodev.AFMT_S16_BE
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# set parameters based on .au file headers
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self.dev.setparameters(rate, 16, nchannels, fmt)
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self.dev.write(data)
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self.dev.flush()
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def test_errors(self):
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size = 8
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fmt = linuxaudiodev.AFMT_U8
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rate = 8000
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nchannels = 1
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try:
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self.dev.setparameters(-1, size, nchannels, fmt)
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except ValueError, err:
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self.assertEquals(err.args[0], "expected rate >= 0, not -1")
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try:
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self.dev.setparameters(rate, -2, nchannels, fmt)
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except ValueError, err:
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self.assertEquals(err.args[0], "expected sample size >= 0, not -2")
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try:
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self.dev.setparameters(rate, size, 3, fmt)
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except ValueError, err:
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self.assertEquals(err.args[0], "nchannels must be 1 or 2, not 3")
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try:
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self.dev.setparameters(rate, size, nchannels, 177)
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except ValueError, err:
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self.assertEquals(err.args[0], "unknown audio encoding: 177")
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try:
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self.dev.setparameters(rate, size, nchannels, linuxaudiodev.AFMT_U16_LE)
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except ValueError, err:
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self.assertEquals(err.args[0], "for linear unsigned 16-bit little-endian "
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"audio, expected sample size 16, not 8")
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try:
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self.dev.setparameters(rate, 16, nchannels, fmt)
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except ValueError, err:
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self.assertEquals(err.args[0], "for linear unsigned 8-bit audio, expected "
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"sample size 8, not 16")
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def test_main():
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try:
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dsp = linuxaudiodev.open('w')
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except linuxaudiodev.error, msg:
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if msg.args[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
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raise unittest.SkipTest(msg)
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raise
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dsp.close()
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run_unittest(LinuxAudioDevTests)
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if __name__ == '__main__':
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test_main()
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