Python ossaudiodev.AFMT_S16_NE屬性代碼示例

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
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, err:
                pass
            else:
                self.fail("expected OSSAudioError") 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
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") 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
def test_bad_setparameters(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)
        _assert(result != config,
                "setparameters: unexpectedly got requested configuration")

        try:
            result = dsp.setparameters(fmt, channels, rate, True)
            raise AssertionError("setparameters: expected OSSAudioError")
        except ossaudiodev.OSSAudioError, err:
            print "setparameters: got OSSAudioError as expected" 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
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)) 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
def test_setparameters(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)
    _assert(result == (fmt, channels, rate),
            "setparameters%r: returned %r" % (config, result))
    result = dsp.setparameters(fmt, channels, rate, True)
    _assert(result == (fmt, channels, rate),
            "setparameters%r: returned %r" % (config, result)) 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
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.time()
        dsp.write(data)
        dsp.close()
        t2 = time.time()
        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)) 

# 需要導入模塊: import ossaudiodev [as 別名]
# 或者: from ossaudiodev import AFMT_S16_NE [as 別名]
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))