Python audioop 模块，add() 实例源码
我们从Python开源项目中，提取了以下23个代码示例，用于说明如何使用audioop.add()。
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)
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)
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)
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)
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)
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))
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)
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)
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)
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))
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)
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)
def mix(self, other, other_seconds=None, pad_shortest=True):
"""
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.
"""
assert not self.__locked
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
def mix_at(self, seconds, other, other_seconds=None):
"""
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)
assert not self.__locked
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 = None # 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
def test_add(self):
data2 = []
for d in data:
str = bytearray(len(d))
for i,b in enumerate(d):
str[i] = 2*b
data2.append(str)
self.assertEqual(audioop.add(data[0], data[0], 1), data2[0])
self.assertEqual(audioop.add(data[1], data[1], 2), data2[1])
self.assertEqual(audioop.add(data[2], data[2], 4), data2[2])
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)
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))
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)
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))
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))
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))
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)
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))