jamie@262: #!/usr/bin/python
jamie@262: 
jamie@262: try:
jamie@262:     import xtract
jamie@262: except ImportError:
jamie@262:     print 'Failed to load the library "xtract"'
jamie@262: 
jamie@262: print '\nRunning libxtract Python bindings test...\n'
jamie@262: 
jamie@262: len = 8
jamie@262: 
jamie@262: a = xtract.doubleArray(len)
jamie@262: temp = []
jamie@262: 
jamie@262: for i in range(0, len):
jamie@262:     a[i] = 2 * i
jamie@262:     temp.append(str(a[i]))
jamie@262: 
jamie@262: mean = xtract.xtract_mean(a,len,None)[1]
jamie@262: 
jamie@262: print 'The mean of ' + ', '.join(temp) + ' is: %.2f' % mean
jamie@262: 
jamie@262: argv = xtract.doubleArray(1)
jamie@262: argv[0] = mean
jamie@262: 
jamie@262: variance = xtract.xtract_variance(a, len, argv)[1]
jamie@262: 
jamie@262: print 'The variance is %.2f' % variance
jamie@262: 
jamie@262: print 'Computing spectrum...'
jamie@262: 
jamie@262: argv = xtract.doubleArray(1)
jamie@262: argv[0] = 44100.0 / len  # Fake sample rate
jamie@262: 
jamie@262: xtract.xtract_init_fft(len, xtract.XTRACT_SPECTRUM);
jamie@262: 
jamie@262: result = xtract.doubleArray(len)
jamie@262: 
jamie@262: xtract.xtract_spectrum(a,len,argv, result)
jamie@262: 
jamie@262: 
jamie@262: for i in range(len):
jamie@262:     print result[i]
jamie@262: 
jamie@262: 
jamie@262: print 'Computing windowed subframes...'
jamie@262: 
jamie@262: for i in range(0, len):
jamie@262:     a[i] = 1.0
jamie@262: 
jamie@262: window = xtract.xtract_init_window(len / 2, xtract.XTRACT_HANN)
jamie@262: xtract.xtract_features_from_subframes(a, len, xtract.XTRACT_WINDOWED, window, result) 
jamie@262: 
jamie@262: for i in range(len):
jamie@262:     print result[i]
jamie@262: 
jamie@262: print '\nFinished!\n'