Python audioop.add方法代码示例

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def test_issue7673(self):
        state = None
        for data, size in INVALID_DATA:
            size2 = size
            self.assertRaises(audioop.error, audioop.getsample, data, size, 0)
            self.assertRaises(audioop.error, audioop.max, data, size)
            self.assertRaises(audioop.error, audioop.minmax, data, size)
            self.assertRaises(audioop.error, audioop.avg, data, size)
            self.assertRaises(audioop.error, audioop.rms, data, size)
            self.assertRaises(audioop.error, audioop.avgpp, data, size)
            self.assertRaises(audioop.error, audioop.maxpp, data, size)
            self.assertRaises(audioop.error, audioop.cross, data, size)
            self.assertRaises(audioop.error, audioop.mul, data, size, 1.0)
            self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5)
            self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5)
            self.assertRaises(audioop.error, audioop.add, data, data, size)
            self.assertRaises(audioop.error, audioop.bias, data, size, 0)
            self.assertRaises(audioop.error, audioop.reverse, data, size)
            self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2)
            self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state)
            self.assertRaises(audioop.error, audioop.lin2ulaw, data, size)
            self.assertRaises(audioop.error, audioop.lin2alaw, data, size)
            self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state) 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def test_add(self):
        for w in 1, 2, 3, 4:
            self.assertEqual(audioop.add(b'', b'', w), b'')
            self.assertEqual(audioop.add(bytearray(), bytearray(), w), b'')
            self.assertEqual(audioop.add(memoryview(b''), memoryview(b''), w), b'')
            self.assertEqual(audioop.add(datas[w], b'\0' * len(datas[w]), w),
                             datas[w])
        self.assertEqual(audioop.add(datas[1], datas[1], 1),
                         b'\x00\x24\x7f\x80\x7f\x80\xfe')
        self.assertEqual(audioop.add(datas[2], datas[2], 2),
                packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2))
        self.assertEqual(audioop.add(datas[3], datas[3], 3),
                packs[3](0, 0x2468ac, 0x7fffff, -0x800000,
                       0x7fffff, -0x800000, -2))
        self.assertEqual(audioop.add(datas[4], datas[4], 4),
                packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000,
                       0x7fffffff, -0x80000000, -2)) 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def test_string(self):
        data = 'abcd'
        size = 2
        self.assertRaises(TypeError, audioop.getsample, data, size, 0)
        self.assertRaises(TypeError, audioop.max, data, size)
        self.assertRaises(TypeError, audioop.minmax, data, size)
        self.assertRaises(TypeError, audioop.avg, data, size)
        self.assertRaises(TypeError, audioop.rms, data, size)
        self.assertRaises(TypeError, audioop.avgpp, data, size)
        self.assertRaises(TypeError, audioop.maxpp, data, size)
        self.assertRaises(TypeError, audioop.cross, data, size)
        self.assertRaises(TypeError, audioop.mul, data, size, 1.0)
        self.assertRaises(TypeError, audioop.tomono, data, size, 0.5, 0.5)
        self.assertRaises(TypeError, audioop.tostereo, data, size, 0.5, 0.5)
        self.assertRaises(TypeError, audioop.add, data, data, size)
        self.assertRaises(TypeError, audioop.bias, data, size, 0)
        self.assertRaises(TypeError, audioop.reverse, data, size)
        self.assertRaises(TypeError, audioop.lin2lin, data, size, size)
        self.assertRaises(TypeError, audioop.ratecv, data, size, 1, 1, 1, None)
        self.assertRaises(TypeError, audioop.lin2ulaw, data, size)
        self.assertRaises(TypeError, audioop.lin2alaw, data, size)
        self.assertRaises(TypeError, audioop.lin2adpcm, data, size, None) 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def mix(self, other: 'Sample', other_seconds: Optional[float] = None, pad_shortest: bool = True) -> 'Sample':
        """
        Mix another sample into the current sample.
        You can limit the length taken from the other sample.
        When pad_shortest is False, no sample length adjustment is done.
        """
        if self.__locked:
            raise RuntimeError("cannot modify a locked sample")
        assert self.samplewidth == other.samplewidth
        assert self.samplerate == other.samplerate
        assert self.nchannels == other.nchannels
        frames1 = self.__frames
        if other_seconds:
            frames2 = other.__frames[:other.frame_idx(other_seconds)]
        else:
            frames2 = other.__frames
        if pad_shortest:
            if len(frames1) < len(frames2):
                frames1 += b"\0"*(len(frames2)-len(frames1))
            elif len(frames2) < len(frames1):
                frames2 += b"\0"*(len(frames1)-len(frames2))
        self.__frames = audioop.add(frames1, frames2, self.samplewidth)
        return self 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def mix_at(self, seconds: float, other: 'Sample', other_seconds: Optional[float] = None) -> 'Sample':
        """
        Mix another sample into the current sample at a specific time point.
        You can limit the length taken from the other sample.
        """
        if seconds == 0.0:
            return self.mix(other, other_seconds)
        if self.__locked:
            raise RuntimeError("cannot modify a locked sample")
        assert self.samplewidth == other.samplewidth
        assert self.samplerate == other.samplerate
        assert self.nchannels == other.nchannels
        start_frame_idx = self.frame_idx(seconds)
        if other_seconds:
            other_frames = other.__frames[:other.frame_idx(other_seconds)]
        else:
            other_frames = other.__frames
        # Mix the frames. Unfortunately audioop requires splitting and copying the sample data, which is slow.
        pre, to_mix, post = self._mix_split_frames(len(other_frames), start_frame_idx)
        self.__frames = b""  # allow for garbage collection
        mixed = audioop.add(to_mix, other_frames, self.samplewidth)
        del to_mix  # more garbage collection
        self.__frames = self._mix_join_frames(pre, mixed, post)
        return self 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def test_add(self):
        for w in 1, 2, 4:
            self.assertEqual(audioop.add(b'', b'', w), b'')
            self.assertEqual(audioop.add(datas[w], b'\0' * len(datas[w]), w),
                             datas[w])
        self.assertEqual(audioop.add(datas[1], datas[1], 1),
                         b'\x00\x24\x7f\x80\x7f\x80\xfe')
        self.assertEqual(audioop.add(datas[2], datas[2], 2),
                packs[2](0, 0x2468, 0x7fff, -0x8000, 0x7fff, -0x8000, -2))
        self.assertEqual(audioop.add(datas[4], datas[4], 4),
                packs[4](0, 0x2468acf0, 0x7fffffff, -0x80000000,
                       0x7fffffff, -0x80000000, -2)) 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def writeframes(self, data):
        import time
        from Carbon.Sound import bufferCmd, callBackCmd, extSH
        import struct
        import MacOS
        if not self._chan:
            from Carbon import Snd
            self._chan = Snd.SndNewChannel(5, 0, self._callback)
        nframes = len(data) / self._nchannels / self._sampwidth
        if len(data) != nframes * self._nchannels * self._sampwidth:
            raise error, 'data is not a whole number of frames'
        while self._gc and \
              self.getfilled() + nframes > \
                self._qsize / self._nchannels / self._sampwidth:
            time.sleep(0.1)
        if self._sampwidth == 1:
            import audioop
            data = audioop.add(data, '\x80'*len(data), 1)
        h1 = struct.pack('llHhllbbl',
            id(data)+MacOS.string_id_to_buffer,
            self._nchannels,
            self._outrate, 0,
            0,
            0,
            extSH,
            60,
            nframes)
        h2 = 22*'\0'
        h3 = struct.pack('hhlll',
            self._sampwidth*8,
            0,
            0,
            0,
            0)
        header = h1+h2+h3
        self._gc.append((header, data))
        self._chan.SndDoCommand((bufferCmd, 0, header), 0)
        self._chan.SndDoCommand((callBackCmd, 0, 0), 0) 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def chunks(self) -> Generator[memoryview, None, None]:
        silence = b"\0" * self.chunksize
        while not self._closed:
            chunks_to_mix = []
            active_samples = self.determine_samples_to_mix()
            for i, (name, s) in active_samples:
                try:
                    chunk = next(s)
                    if len(chunk) > self.chunksize:
                        raise ValueError("chunk from sample is larger than chunksize from mixer (" +
                                         str(len(chunk)) + " vs " + str(self.chunksize) + ")")
                    if len(chunk) < self.chunksize:
                        # pad the chunk with some silence
                        chunk = memoryview(chunk.tobytes() + silence[len(chunk):])
                    chunks_to_mix.append(chunk)
                except StopIteration:
                    self.remove_sample(i, True)
            chunks_to_mix = chunks_to_mix or [silence]      # type: ignore
            assert all(len(c) == self.chunksize for c in chunks_to_mix)
            mixed = chunks_to_mix[0]
            if len(chunks_to_mix) > 1:
                for to_mix in chunks_to_mix[1:]:
                    mixed = audioop.add(mixed, to_mix, params.norm_nchannels)
                mixed = memoryview(mixed)
            self.chunks_mixed += 1
            yield mixed 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def testadd(data):
    if verbose:
        print 'add'
    data2 = []
    for d in data:
        str = ''
        for s in d:
            str = str + chr(ord(s)*2)
        data2.append(str)
    if audioop.add(data[0], data[0], 1) != data2[0] or \
              audioop.add(data[1], data[1], 2) != data2[1] or \
              audioop.add(data[2], data[2], 4) != data2[2]:
        return 0
    return 1 

# 需要导入模块: import audioop [as 别名]
# 或者: from audioop import add [as 别名]
def testall():
    data = [gendata1(), gendata2(), gendata4()]
    names = dir(audioop)
    # We know there is a routine 'add'
    routines = []
    for n in names:
        if type(eval('audioop.'+n)) == type(audioop.add):
            routines.append(n)
    for n in routines:
        testone(n, data)