class AudioBufferTest(unittest.TestCase):
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04',
'\x01\x02\x03\x04',
'\x01\x02',
'\x01',
'\x01']
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
def data_of_length(self, length):
return self.data_str * self.n_channels * length
def testBufWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_bytes(self.data_of_length(4))
self.assertEquals(self.buff32.get_available_read(), 16)
def testOverwrite(self):
self.buff32.write_bytes(self.data_of_length(12))
data6 = self.data_of_length(6)
caught = False
try:
self.buff32.write_bytes(data6)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testOverRead(self):
data4 = self.data_of_length(4)
self.buff32.write_bytes(data4)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, data4)
def testWriteSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data4, data_read)
def testWriteArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = numpy.random.rand(4 * self.n_channels)
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data_read, data4)
def testRead(self):
self.buff32.write_bytes(self.data_of_length(12))
read_data = self.buff32.read_bytes(12)
print read_data
self.assertEquals(read_data, self.data_of_length(12))
def testWraparoundWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
def testWraparoundRead(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 0)
def testInvalidData(self):
caught = False
try:
self.buff32.write_bytes([2]*12)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testMultipleWraps(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(8)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(16)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(9)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(11)
self.buff32.write_bytes(self.data_of_length(12))
data_read = self.buff32.read_bytes(12)
self.assertEquals(self.buff32.get_available_read(), 4)
self.assertEquals(data_read, self.data_of_length(12))
def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [x for x in range(n_in * n_samples) if x % n_in == 0 or (x - 1) % n_in == 0]
self.assertListFloatEqual(correct, data_out)
def assertListFloatEqual(self, list1, list2):
if not len(list1) == len(list2):
raise AssertionError("Lists differ in lenght. Cannot be equal")
for i in range(len(list1)):
self.assertLessEqual(abs(list1[i] - list2[i]), 1e-4)
def tearDown(self):
print "Completed"
class AudioBufferTest(unittest.TestCase):
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04', '\x01\x02\x03\x04', '\x01\x02', '\x01', '\x01'
]
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
def data_of_length(self, length):
return self.data_str * self.n_channels * length
def testBufWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_bytes(self.data_of_length(4))
self.assertEquals(self.buff32.get_available_read(), 16)
def testOverwrite(self):
self.buff32.write_bytes(self.data_of_length(12))
data6 = self.data_of_length(6)
caught = False
try:
self.buff32.write_bytes(data6)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testOverRead(self):
data4 = self.data_of_length(4)
self.buff32.write_bytes(data4)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, data4)
def testWriteSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data4, data_read)
def testWriteArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = numpy.random.rand(4 * self.n_channels)
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data_read, data4)
def testRead(self):
self.buff32.write_bytes(self.data_of_length(12))
read_data = self.buff32.read_bytes(12)
print read_data
self.assertEquals(read_data, self.data_of_length(12))
def testWraparoundWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
def testWraparoundRead(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 0)
def testInvalidData(self):
caught = False
try:
self.buff32.write_bytes([2] * 12)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testMultipleWraps(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(8)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(16)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(9)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(11)
self.buff32.write_bytes(self.data_of_length(12))
data_read = self.buff32.read_bytes(12)
self.assertEquals(self.buff32.get_available_read(), 4)
self.assertEquals(data_read, self.data_of_length(12))
def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [
x for x in range(n_in * n_samples)
if x % n_in == 0 or (x - 1) % n_in == 0
]
self.assertListFloatEqual(correct, data_out)
def assertListFloatEqual(self, list1, list2):
if not len(list1) == len(list2):
raise AssertionError("Lists differ in lenght. Cannot be equal")
for i in range(len(list1)):
self.assertLessEqual(abs(list1[i] - list2[i]), 1e-4)
def tearDown(self):
print "Completed"
