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#!/usr/bin/python
try:
import libxtract.xtract as xtract
except ImportError:
print 'Failed to load the library "xtract"'
print '\nRunning libxtract Python bindings test...\n'
len = 8
a = xtract.doubleArray(len)
temp = []
for i in range(0, len):
a[i] = 2 * i
temp.append(str(a[i]))
mean = xtract.xtract_mean(a,len,None)[1]
print 'The mean of ' + ', '.join(temp) + ' is: %.2f' % mean
argv = xtract.doubleArray(1)
argv[0] = mean
variance = xtract.xtract_variance(a, len, argv)[1]
print 'The variance is %.2f' % variance
print 'Computing spectrum...'
argv = xtract.doubleArray(1)
argv[0] = 44100.0 / len # Fake sample rate
xtract.xtract_init_fft(len, xtract.XTRACT_SPECTRUM);
result = xtract.doubleArray(len)
xtract.xtract_spectrum(a,len,argv, result)
for i in range(len):
print result[i]
print 'Computing windowed subframes...'
for i in range(0, len):
a[i] = 1.0
window = xtract.xtract_init_window(len / 2, xtract.XTRACT_HANN)
xtract.xtract_features_from_subframes(a, len, xtract.XTRACT_WINDOWED, window, result)
for i in range(len):
print result[i]
print '\nFinished!\n'
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