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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’IIGÿÙfrom test import support support.requires('audio') from test.support import findfile ossaudiodev = support.import_module('ossaudiodev') import errno import sys import sunau import time import audioop import unittest # Arggh, AFMT_S16_NE not defined on all platforms -- seems to be a # fairly recent addition to OSS. try: from ossaudiodev import AFMT_S16_NE except ImportError: if sys.byteorder == "little": AFMT_S16_NE = ossaudiodev.AFMT_S16_LE else: AFMT_S16_NE = ossaudiodev.AFMT_S16_BE def read_sound_file(path): with open(path, 'rb') as fp: au = sunau.open(fp) rate = au.getframerate() nchannels = au.getnchannels() encoding = au._encoding fp.seek(0) data = fp.read() if encoding != sunau.AUDIO_FILE_ENCODING_MULAW_8: raise RuntimeError("Expect .au file with 8-bit mu-law samples") # Convert the data to 16-bit signed. data = audioop.ulaw2lin(data, 2) return (data, rate, 16, nchannels) class OSSAudioDevTests(unittest.TestCase): def play_sound_file(self, data, rate, ssize, nchannels): try: dsp = ossaudiodev.open('w') except OSError as msg: if msg.args[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY): raise unittest.SkipTest(msg) raise # at least check that these methods can be invoked dsp.bufsize() dsp.obufcount() dsp.obuffree() dsp.getptr() dsp.fileno() # Make sure the read-only attributes work. self.assertFalse(dsp.closed) self.assertEqual(dsp.name, "/dev/dsp") self.assertEqual(dsp.mode, "w", "bad dsp.mode: %r" % dsp.mode) # And make sure they're really read-only. for attr in ('closed', 'name', 'mode'): try: setattr(dsp, attr, 42) except (TypeError, AttributeError): pass else: self.fail("dsp.%s not read-only" % attr) # Compute expected running time of sound sample (in seconds). expected_time = float(len(data)) / (ssize/8) / nchannels / rate # set parameters based on .au file headers dsp.setparameters(AFMT_S16_NE, nchannels, rate) self.assertTrue(abs(expected_time - 3.51) < 1e-2, expected_time) t1 = time.monotonic() dsp.write(data) dsp.close() t2 = time.monotonic() elapsed_time = t2 - t1 percent_diff = (abs(elapsed_time - expected_time) / expected_time) * 100 self.assertTrue(percent_diff <= 10.0, "elapsed time (%s) > 10%% off of expected time (%s)" % (elapsed_time, expected_time)) def set_parameters(self, dsp): # Two configurations for testing: # config1 (8-bit, mono, 8 kHz) should work on even the most # ancient and crufty sound card, but maybe not on special- # purpose high-end hardware # config2 (16-bit, stereo, 44.1kHz) should work on all but the # most ancient and crufty hardware config1 = (ossaudiodev.AFMT_U8, 1, 8000) config2 = (AFMT_S16_NE, 2, 44100) for config in [config1, config2]: (fmt, channels, rate) = config if (dsp.setfmt(fmt) == fmt and dsp.channels(channels) == channels and dsp.speed(rate) == rate): break else: raise RuntimeError("unable to set audio sampling parameters: " "you must have really weird audio hardware") # setparameters() should be able to set this configuration in # either strict or non-strict mode. result = dsp.setparameters(fmt, channels, rate, False) self.assertEqual(result, (fmt, channels, rate), "setparameters%r: returned %r" % (config, result)) result = dsp.setparameters(fmt, channels, rate, True) self.assertEqual(result, (fmt, channels, rate), "setparameters%r: returned %r" % (config, result)) def set_bad_parameters(self, dsp): # Now try some configurations that are presumably bogus: eg. 300 # channels currently exceeds even Hollywood's ambitions, and # negative sampling rate is utter nonsense. setparameters() should # accept these in non-strict mode, returning something other than # was requested, but should barf in strict mode. fmt = AFMT_S16_NE rate = 44100 channels = 2 for config in [(fmt, 300, rate), # ridiculous nchannels (fmt, -5, rate), # impossible nchannels (fmt, channels, -50), # impossible rate ]: (fmt, channels, rate) = config result = dsp.setparameters(fmt, channels, rate, False) self.assertNotEqual(result, config, "unexpectedly got requested configuration") try: result = dsp.setparameters(fmt, channels, rate, True) except ossaudiodev.OSSAudioError as err: pass else: self.fail("expected OSSAudioError") def test_playback(self): sound_info = read_sound_file(findfile('audiotest.au')) self.play_sound_file(*sound_info) def test_set_parameters(self): dsp = ossaudiodev.open("w") try: self.set_parameters(dsp) # Disabled because it fails under Linux 2.6 with ALSA's OSS # emulation layer. #self.set_bad_parameters(dsp) finally: dsp.close() self.assertTrue(dsp.closed) def test_mixer_methods(self): # Issue #8139: ossaudiodev didn't initialize its types properly, # therefore some methods were unavailable. with ossaudiodev.openmixer() as mixer: self.assertGreaterEqual(mixer.fileno(), 0) def test_with(self): with ossaudiodev.open('w') as dsp: pass self.assertTrue(dsp.closed) def test_on_closed(self): dsp = ossaudiodev.open('w') dsp.close() self.assertRaises(ValueError, dsp.fileno) self.assertRaises(ValueError, dsp.read, 1) self.assertRaises(ValueError, dsp.write, b'x') self.assertRaises(ValueError, dsp.writeall, b'x') self.assertRaises(ValueError, dsp.bufsize) self.assertRaises(ValueError, dsp.obufcount) self.assertRaises(ValueError, dsp.obufcount) self.assertRaises(ValueError, dsp.obuffree) self.assertRaises(ValueError, dsp.getptr) mixer = ossaudiodev.openmixer() mixer.close() self.assertRaises(ValueError, mixer.fileno) def setUpModule(): try: dsp = ossaudiodev.open('w') except (ossaudiodev.error, OSError) as msg: if msg.args[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY): raise unittest.SkipTest(msg) raise dsp.close() if __name__ == "__main__": unittest.main()