Python audioop.ulaw2lin() Examples

The following are 30 code examples of audioop.ulaw2lin(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module audioop , or try the search function .
Example #1
Source File: test_linuxaudiodev.py    From gcblue with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def test_play_sound_file(self):
        path = findfile("audiotest.au")
        fp = open(path, 'r')
        size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)
        data = fp.read()
        fp.close()

        if enc != SND_FORMAT_MULAW_8:
            self.fail("Expect .au file with 8-bit mu-law samples")

        # convert the data to 16-bit signed
        data = audioop.ulaw2lin(data, 2)

        # set the data format
        if sys.byteorder == 'little':
            fmt = linuxaudiodev.AFMT_S16_LE
        else:
            fmt = linuxaudiodev.AFMT_S16_BE

        # set parameters based on .au file headers
        self.dev.setparameters(rate, 16, nchannels, fmt)
        self.dev.write(data)
        self.dev.flush()
Example #2
Source File: test_audioop.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 6 votes vote down vote up 
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)
Example #3
Source File: test_linuxaudiodev.py    From CTFCrackTools-V2 with GNU General Public License v3.0 6 votes vote down vote up 
def test_play_sound_file(self):
        path = findfile("audiotest.au")
        fp = open(path, 'r')
        size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)
        data = fp.read()
        fp.close()

        if enc != SND_FORMAT_MULAW_8:
            self.fail("Expect .au file with 8-bit mu-law samples")

        # convert the data to 16-bit signed
        data = audioop.ulaw2lin(data, 2)

        # set the data format
        if sys.byteorder == 'little':
            fmt = linuxaudiodev.AFMT_S16_LE
        else:
            fmt = linuxaudiodev.AFMT_S16_BE

        # set parameters based on .au file headers
        self.dev.setparameters(rate, 16, nchannels, fmt)
        self.dev.write(data)
        self.dev.flush()
Example #4
Source File: test_audioop.py    From Fluid-Designer with GNU General Public License v3.0 6 votes vote down vote up 
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)
Example #5
Source File: test_audioop.py    From ironpython3 with Apache License 2.0 6 votes vote down vote up 
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)
Example #6
Source File: test_ossaudiodev.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
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)
Example #7
Source File: aifc.py    From RevitBatchProcessor with GNU General Public License v3.0 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #8
Source File: audiodev.py    From unity-python with MIT License 5 votes vote down vote up 
def ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #9
Source File: aifc.py    From unity-python with MIT License 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #10
Source File: audiodev.py    From unity-python with MIT License 5 votes vote down vote up 
def setsampwidth(self, width):
        for (raw, cooked) in self.sampwidthlist:
            if width == raw:
                self.config.setwidth(cooked)
                self.inited_width = 1
                break
        else:
            if width == 0:
                import AL
                self.inited_width = 0
                self.config.setwidth(AL.SAMPLE_16)
                self.converter = self.ulaw2lin
            else:
                raise error, 'bad sample width'
Example #11
Source File: audiodev.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #12
Source File: audiodev.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def setsampwidth(self, width):
        for (raw, cooked) in self.sampwidthlist:
            if width == raw:
                self.config.setwidth(cooked)
                self.inited_width = 1
                break
        else:
            if width == 0:
                import AL
                self.inited_width = 0
                self.config.setwidth(AL.SAMPLE_16)
                self.converter = self.ulaw2lin
            else:
                raise error, 'bad sample width'
Example #13
Source File: sunau.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def readframes(self, nframes):
        if self._encoding in _simple_encodings:
            if nframes == AUDIO_UNKNOWN_SIZE:
                data = self._file.read()
            else:
                data = self._file.read(nframes * self._framesize)
            self._soundpos += len(data) // self._framesize
            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
                import audioop
                data = audioop.ulaw2lin(data, self._sampwidth)
            return data
        return None             # XXX--not implemented yet
Example #14
Source File: sunau.py    From Carnets with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def readframes(self, nframes):
        if self._encoding in _simple_encodings:
            if nframes == AUDIO_UNKNOWN_SIZE:
                data = self._file.read()
            else:
                data = self._file.read(nframes * self._framesize)
            self._soundpos += len(data) // self._framesize
            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
                import audioop
                data = audioop.ulaw2lin(data, self._sampwidth)
            return data
        return None             # XXX--not implemented yet
Example #15
Source File: aifc.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #16
Source File: aifc.py    From medicare-demo with Apache License 2.0 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #17
Source File: test_audioop.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
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)
Example #18
Source File: test_audioop.py    From medicare-demo with Apache License 2.0 5 votes vote down vote up 
def testulaw2lin(data):
    if verbose:
        print 'ulaw2lin'
    # Cursory
    d = audioop.lin2ulaw(data[0], 1)
    if audioop.ulaw2lin(d, 1) != data[0]:
        return 0
    return 1
Example #19
Source File: test_audioop.py    From gcblue with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def test_wrongsize(self):
        data = b'abcdefgh'
        state = None
        for size in (-1, 0, 3, 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)
Example #20
Source File: aifc.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #21
Source File: sunau.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def readframes(self, nframes):
        if self._encoding in _simple_encodings:
            if nframes == AUDIO_UNKNOWN_SIZE:
                data = self._file.read()
            else:
                data = self._file.read(nframes * self._framesize)
            self._soundpos += len(data) // self._framesize
            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
                import audioop
                data = audioop.ulaw2lin(data, self._sampwidth)
            return data
        return None             # XXX--not implemented yet
Example #22
Source File: aifc.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
def _ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #23
Source File: Audio_mac.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
def ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #24
Source File: audiodev.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
def ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #25
Source File: audiodev.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
def setsampwidth(self, width):
        for (raw, cooked) in self.sampwidthlist:
            if width == raw:
                self.config.setwidth(cooked)
                self.inited_width = 1
                break
        else:
            if width == 0:
                import AL
                self.inited_width = 0
                self.config.setwidth(AL.SAMPLE_16)
                self.converter = self.ulaw2lin
            else:
                raise error, 'bad sample width'
Example #26
Source File: test_audioop.py    From gcblue with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
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, 4:
            self.assertEqual(audioop.ulaw2lin(encoded, w),
                             packs[w](*(x << (w * 8) >> 14 for x in src)))

        # Current u-law implementation has two codes fo 0: 0x7f and 0xff.
        encoded = ''.join(chr(x) for x in range(127) + range(128, 256))
        for w in 2, 4:
            decoded = audioop.ulaw2lin(encoded, w)
            self.assertEqual(audioop.lin2ulaw(decoded, w), encoded)
Example #27
Source File: sunau.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
def readframes(self, nframes):
        if self._encoding in _simple_encodings:
            if nframes == AUDIO_UNKNOWN_SIZE:
                data = self._file.read()
            else:
                data = self._file.read(nframes * self._framesize)
            self._soundpos += len(data) // self._framesize
            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
                import audioop
                data = audioop.ulaw2lin(data, self._sampwidth)
            return data
        return None             # XXX--not implemented yet
Example #28
Source File: audiodev.py    From datafari with Apache License 2.0 5 votes vote down vote up 
def ulaw2lin(self, data):
        import audioop
        return audioop.ulaw2lin(data, 2)
Example #29
Source File: audiodev.py    From datafari with Apache License 2.0 5 votes vote down vote up 
def setsampwidth(self, width):
        for (raw, cooked) in self.sampwidthlist:
            if width == raw:
                self.config.setwidth(cooked)
                self.inited_width = 1
                break
        else:
            if width == 0:
                import AL
                self.inited_width = 0
                self.config.setwidth(AL.SAMPLE_16)
                self.converter = self.ulaw2lin
            else:
                raise error, 'bad sample width'
Example #30
Source File: sunau.py    From datafari with Apache License 2.0 5 votes vote down vote up 
def readframes(self, nframes):
        if self._encoding in _simple_encodings:
            if nframes == AUDIO_UNKNOWN_SIZE:
                data = self._file.read()
            else:
                data = self._file.read(nframes * self._framesize)
            self._soundpos += len(data) // self._framesize
            if self._encoding == AUDIO_FILE_ENCODING_MULAW_8:
                import audioop
                data = audioop.ulaw2lin(data, self._sampwidth)
            return data
        return None             # XXX--not implemented yet