--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_ossaudiodev.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,171 @@
+from test import test_support
+test_support.requires('audio')
+
+from test.test_support import findfile, TestSkipped
+
+import errno
+import ossaudiodev
+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 IOError, msg:
+ if msg[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
+ raise TestSkipped(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.failIf(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:
+ 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 - 2.94) < 1e-2, expected_time)
+ t1 = time.time()
+ dsp.write(data)
+ dsp.close()
+ t2 = time.time()
+ elapsed_time = t2 - t1
+
+ percent_diff = (abs(elapsed_time - expected_time) / expected_time) * 100
+ self.failUnless(percent_diff <= 10.0,
+ "elapsed time > 10% off of 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.failIfEqual(result, config,
+ "unexpectedly got requested configuration")
+
+ try:
+ result = dsp.setparameters(fmt, channels, rate, True)
+ except ossaudiodev.OSSAudioError, 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.failUnless(dsp.closed)
+
+
+def test_main():
+ try:
+ dsp = ossaudiodev.open('w')
+ except (ossaudiodev.error, IOError), msg:
+ if msg[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
+ raise TestSkipped(msg)
+ raise
+ dsp.close()
+ test_support.run_unittest(__name__)
+
+if __name__ == "__main__":
+ test_main()