python/tests/test_source.py

   1 #! /usr/bin/env python
   2
   3 from nose2 import main
   4 from nose2.tools import params
   5 from numpy.testing import TestCase, assert_equal
   6 from aubio import source
   7 from .utils import list_all_sounds
   8 import numpy as np
   9
  10 import warnings
  11 warnings.filterwarnings('ignore', category=UserWarning, append=True)
  12
  13 list_of_sounds = list_all_sounds('sounds')
  14 samplerates = [0, 44100, 8000, 32000]
  15 hop_sizes = [512, 1024, 64]
  16
  17 path = None
  18
  19 all_params = []
  20 for soundfile in list_of_sounds:
  21     for hop_size in hop_sizes:
  22         for samplerate in samplerates:
  23             all_params.append((hop_size, samplerate, soundfile))
  24
  25
  26 class aubio_source_test_case_base(TestCase):
  27
  28     def setUp(self):
  29         if not len(list_of_sounds):
  30             self.skipTest('add some sound files in \'python/tests/sounds\'')
  31         self.default_test_sound = list_of_sounds[0]
  32
  33 class aubio_source_test_case(aubio_source_test_case_base):
  34
  35     @params(*list_of_sounds)
  36     def test_close_file(self, filename):
  37         samplerate = 0 # use native samplerate
  38         hop_size = 256
  39         f = source(filename, samplerate, hop_size)
  40         f.close()
  41
  42     @params(*list_of_sounds)
  43     def test_close_file_twice(self, filename):
  44         samplerate = 0 # use native samplerate
  45         hop_size = 256
  46         f = source(filename, samplerate, hop_size)
  47         f.close()
  48         f.close()
  49
  50 class aubio_source_read_test_case(aubio_source_test_case_base):
  51
  52     def read_from_source(self, f):
  53         total_frames = 0
  54         while True:
  55             samples , read = f()
  56             total_frames += read
  57             if read < f.hop_size:
  58                 assert_equal(samples[read:], 0)
  59                 if 'brownnoise' in f.uri:
  60                     self.assertEquals(np.count_nonzero(samples[:read]), read)
  61                 break
  62         #result_str = "read {:.2f}s ({:d} frames in {:d} blocks at {:d}Hz) from {:s}"
  63         #result_params = total_frames / float(f.samplerate), total_frames, total_frames//f.hop_size, f.samplerate, f.uri
  64         #print (result_str.format(*result_params))
  65         return total_frames
  66
  67     @params(*all_params)
  68     def test_samplerate_hopsize(self, hop_size, samplerate, soundfile):
  69         try:
  70             f = source(soundfile, samplerate, hop_size)
  71         except RuntimeError as e:
  72             self.skipTest('failed opening with hop_s = {:d}, samplerate = {:d} ({:s})'.format(hop_size, samplerate, str(e)))
  73         assert f.samplerate != 0
  74         self.read_from_source(f)
  75
  76     @params(*list_of_sounds)
  77     def test_samplerate_none(self, p):
  78         f = source(p)
  79         assert f.samplerate != 0
  80         self.read_from_source(f)
  81
  82     @params(*list_of_sounds)
  83     def test_samplerate_0(self, p):
  84         f = source(p, 0)
  85         assert f.samplerate != 0
  86         self.read_from_source(f)
  87
  88     @params(*list_of_sounds)
  89     def test_zero_hop_size(self, p):
  90         f = source(p, 0, 0)
  91         assert f.samplerate != 0
  92         assert f.hop_size != 0
  93         self.read_from_source(f)
  94
  95     @params(*list_of_sounds)
  96     def test_seek_to_half(self, p):
  97         from random import randint
  98         f = source(p, 0, 0)
  99         assert f.samplerate != 0
 100         assert f.hop_size != 0
 101         a = self.read_from_source(f)
 102         c = randint(0, a)
 103         f.seek(c)
 104         b = self.read_from_source(f)
 105         assert a == b + c
 106
 107     @params(*list_of_sounds)
 108     def test_duration(self, p):
 109         total_frames = 0
 110         f = source(p)
 111         duration = f.duration
 112         while True:
 113             _, read = f()
 114             total_frames += read
 115             if read < f.hop_size: break
 116         self.assertEqual(duration, total_frames)
 117
 118
 119 class aubio_source_test_wrong_params(TestCase):
 120
 121     def test_wrong_file(self):
 122         with self.assertRaises(RuntimeError):
 123             source('path_to/unexisting file.mp3')
 124
 125 class aubio_source_test_wrong_params_with_file(aubio_source_test_case_base):
 126
 127     def test_wrong_samplerate(self):
 128         with self.assertRaises(ValueError):
 129             source(self.default_test_sound, -1)
 130
 131     def test_wrong_hop_size(self):
 132         with self.assertRaises(ValueError):
 133             source(self.default_test_sound, 0, -1)
 134
 135     def test_wrong_channels(self):
 136         with self.assertRaises(ValueError):
 137             source(self.default_test_sound, 0, 0, -1)
 138
 139     def test_wrong_seek(self):
 140         f = source(self.default_test_sound)
 141         with self.assertRaises(ValueError):
 142             f.seek(-1)
 143
 144     def test_wrong_seek_too_large(self):
 145         f = source(self.default_test_sound)
 146         try:
 147             with self.assertRaises(ValueError):
 148                 f.seek(f.duration + f.samplerate * 10)
 149         except AssertionError:
 150             self.skipTest('seeking after end of stream failed raising ValueError')
 151
 152 class aubio_source_readmulti_test_case(aubio_source_read_test_case):
 153
 154     def read_from_source(self, f):
 155         total_frames = 0
 156         while True:
 157             samples, read = f.do_multi()
 158             total_frames += read
 159             if read < f.hop_size:
 160                 assert_equal(samples[:,read:], 0)
 161                 if 'brownnoise' in f.uri:
 162                     self.assertEquals(np.count_nonzero(samples[:,:read]), read)
 163                 break
 164         #result_str = "read {:.2f}s ({:d} frames in {:d} channels and {:d} blocks at {:d}Hz) from {:s}"
 165         #result_params = total_frames / float(f.samplerate), total_frames, f.channels, int(total_frames/f.hop_size), f.samplerate, f.uri
 166         #print (result_str.format(*result_params))
 167         return total_frames
 168
 169 if __name__ == '__main__':
 170     main()