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                 break
  60         #result_str = "read {:.2f}s ({:d} frames in {:d} blocks at {:d}Hz) from {:s}"
  61         #result_params = total_frames / float(f.samplerate), total_frames, total_frames//f.hop_size, f.samplerate, f.uri
  62         #print (result_str.format(*result_params))
  63         return total_frames
  64
  65     @params(*all_params)
  66     def test_samplerate_hopsize(self, hop_size, samplerate, soundfile):
  67         try:
  68             f = source(soundfile, samplerate, hop_size)
  69         except RuntimeError as e:
  70             self.skipTest('failed opening with hop_s = {:d}, samplerate = {:d} ({:s})'.format(hop_size, samplerate, str(e)))
  71         assert f.samplerate != 0
  72         read_frames = self.read_from_source(f)
  73         if 'f_' in soundfile and samplerate == 0:
  74             import re
  75             f = re.compile('.*_\([0:9]*f\)_.*')
  76             match_f = re.findall('([0-9]*)f_', soundfile)
  77             if len(match_f) == 1:
  78                 expected_frames = int(match_f[0])
  79                 self.assertEqual(expected_frames, read_frames)
  80
  81     @params(*list_of_sounds)
  82     def test_samplerate_none(self, p):
  83         f = source(p)
  84         assert f.samplerate != 0
  85         self.read_from_source(f)
  86
  87     @params(*list_of_sounds)
  88     def test_samplerate_0(self, p):
  89         f = source(p, 0)
  90         assert f.samplerate != 0
  91         self.read_from_source(f)
  92
  93     @params(*list_of_sounds)
  94     def test_zero_hop_size(self, p):
  95         f = source(p, 0, 0)
  96         assert f.samplerate != 0
  97         assert f.hop_size != 0
  98         self.read_from_source(f)
  99
 100     @params(*list_of_sounds)
 101     def test_seek_to_half(self, p):
 102         from random import randint
 103         f = source(p, 0, 0)
 104         assert f.samplerate != 0
 105         assert f.hop_size != 0
 106         a = self.read_from_source(f)
 107         c = randint(0, a)
 108         f.seek(c)
 109         b = self.read_from_source(f)
 110         assert a == b + c
 111
 112     @params(*list_of_sounds)
 113     def test_duration(self, p):
 114         total_frames = 0
 115         f = source(p)
 116         duration = f.duration
 117         while True:
 118             _, read = f()
 119             total_frames += read
 120             if read < f.hop_size: break
 121         self.assertEqual(duration, total_frames)
 122
 123
 124 class aubio_source_test_wrong_params(TestCase):
 125
 126     def test_wrong_file(self):
 127         with self.assertRaises(RuntimeError):
 128             source('path_to/unexisting file.mp3')
 129
 130 class aubio_source_test_wrong_params_with_file(aubio_source_test_case_base):
 131
 132     def test_wrong_samplerate(self):
 133         with self.assertRaises(ValueError):
 134             source(self.default_test_sound, -1)
 135
 136     def test_wrong_hop_size(self):
 137         with self.assertRaises(ValueError):
 138             source(self.default_test_sound, 0, -1)
 139
 140     def test_wrong_channels(self):
 141         with self.assertRaises(ValueError):
 142             source(self.default_test_sound, 0, 0, -1)
 143
 144     def test_wrong_seek(self):
 145         f = source(self.default_test_sound)
 146         with self.assertRaises(ValueError):
 147             f.seek(-1)
 148
 149     def test_wrong_seek_too_large(self):
 150         f = source(self.default_test_sound)
 151         try:
 152             with self.assertRaises(ValueError):
 153                 f.seek(f.duration + f.samplerate * 10)
 154         except AssertionError:
 155             self.skipTest('seeking after end of stream failed raising ValueError')
 156
 157 class aubio_source_readmulti_test_case(aubio_source_read_test_case):
 158
 159     def read_from_source(self, f):
 160         total_frames = 0
 161         while True:
 162             samples, read = f.do_multi()
 163             total_frames += read
 164             if read < f.hop_size:
 165                 assert_equal(samples[:,read:], 0)
 166                 break
 167         #result_str = "read {:.2f}s ({:d} frames in {:d} channels and {:d} blocks at {:d}Hz) from {:s}"
 168         #result_params = total_frames / float(f.samplerate), total_frames, f.channels, int(total_frames/f.hop_size), f.samplerate, f.uri
 169         #print (result_str.format(*result_params))
 170         return total_frames
 171
 172 class aubio_source_with(aubio_source_test_case_base):
 173
 174     #@params(*list_of_sounds)
 175     @params(*list_of_sounds)
 176     def test_read_from_mono(self, filename):
 177         total_frames = 0
 178         hop_size = 2048
 179         with source(filename, 0, hop_size) as input_source:
 180             assert_equal(input_source.hop_size, hop_size)
 181             #assert_equal(input_source.samplerate, samplerate)
 182             total_frames = 0
 183             for frames in input_source:
 184                 total_frames += frames.shape[-1]
 185             # check we read as many samples as we expected
 186             assert_equal(total_frames, input_source.duration)
 187
 188 if __name__ == '__main__':
 189     main()