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
   9 import warnings
  10 warnings.filterwarnings('ignore', category=UserWarning, append=True)
  11
  12 list_of_sounds = list_all_sounds('sounds')
  13 samplerates = [0, 44100, 8000, 32000]
  14 hop_sizes = [512, 1024, 64]
  15
  16 path = None
  17
  18 all_params = []
  19 for soundfile in list_of_sounds:
  20     for hop_size in hop_sizes:
  21         for samplerate in samplerates:
  22             all_params.append((hop_size, samplerate, soundfile))
  23
  24
  25 class aubio_source_test_case_base(TestCase):
  26
  27     def setUp(self):
  28         if not len(list_of_sounds):
  29             self.skipTest('add some sound files in \'python/tests/sounds\'')
  30         self.default_test_sound = list_of_sounds[0]
  31
  32 class aubio_source_test_case(aubio_source_test_case_base):
  33
  34     @params(*list_of_sounds)
  35     def test_close_file(self, filename):
  36         samplerate = 0 # use native samplerate
  37         hop_size = 256
  38         f = source(filename, samplerate, hop_size)
  39         f.close()
  40
  41     @params(*list_of_sounds)
  42     def test_close_file_twice(self, filename):
  43         samplerate = 0 # use native samplerate
  44         hop_size = 256
  45         f = source(filename, samplerate, hop_size)
  46         f.close()
  47         f.close()
  48
  49 class aubio_source_read_test_case(aubio_source_test_case_base):
  50
  51     def read_from_source(self, f):
  52         total_frames = 0
  53         while True:
  54             samples , read = f()
  55             total_frames += read
  56             if read < f.hop_size:
  57                 assert_equal(samples[read:], 0)
  58                 break
  59         #result_str = "read {:.2f}s ({:d} frames in {:d} blocks at {:d}Hz) from {:s}"
  60         #result_params = total_frames / float(f.samplerate), total_frames, total_frames//f.hop_size, f.samplerate, f.uri
  61         #print (result_str.format(*result_params))
  62         return total_frames
  63
  64     @params(*all_params)
  65     def test_samplerate_hopsize(self, hop_size, samplerate, soundfile):
  66         try:
  67             f = source(soundfile, samplerate, hop_size)
  68         except RuntimeError as e:
  69             self.skipTest('failed opening with hop_s = {:d}, samplerate = {:d} ({:s})'.format(hop_size, samplerate, str(e)))
  70         assert f.samplerate != 0
  71         read_frames = self.read_from_source(f)
  72         if 'f_' in soundfile and samplerate == 0:
  73             import re
  74             f = re.compile('.*_\([0:9]*f\)_.*')
  75             match_f = re.findall('([0-9]*)f_', soundfile)
  76             if len(match_f) == 1:
  77                 expected_frames = int(match_f[0])
  78                 self.assertEqual(expected_frames, read_frames)
  79
  80     @params(*list_of_sounds)
  81     def test_samplerate_none(self, p):
  82         f = source(p)
  83         assert f.samplerate != 0
  84         self.read_from_source(f)
  85
  86     @params(*list_of_sounds)
  87     def test_samplerate_0(self, p):
  88         f = source(p, 0)
  89         assert f.samplerate != 0
  90         self.read_from_source(f)
  91
  92     @params(*list_of_sounds)
  93     def test_zero_hop_size(self, p):
  94         f = source(p, 0, 0)
  95         assert f.samplerate != 0
  96         assert f.hop_size != 0
  97         self.read_from_source(f)
  98
  99     @params(*list_of_sounds)
 100     def test_seek_to_half(self, p):
 101         from random import randint
 102         f = source(p, 0, 0)
 103         assert f.samplerate != 0
 104         assert f.hop_size != 0
 105         a = self.read_from_source(f)
 106         c = randint(0, a)
 107         f.seek(c)
 108         b = self.read_from_source(f)
 109         assert a == b + c
 110
 111     @params(*list_of_sounds)
 112     def test_duration(self, p):
 113         total_frames = 0
 114         f = source(p)
 115         duration = f.duration
 116         while True:
 117             _, read = f()
 118             total_frames += read
 119             if read < f.hop_size: break
 120         self.assertEqual(duration, total_frames)
 121
 122
 123 class aubio_source_test_wrong_params(TestCase):
 124
 125     def test_wrong_file(self):
 126         with self.assertRaises(RuntimeError):
 127             source('path_to/unexisting file.mp3')
 128
 129 class aubio_source_test_wrong_params_with_file(aubio_source_test_case_base):
 130
 131     def test_wrong_samplerate(self):
 132         with self.assertRaises(ValueError):
 133             source(self.default_test_sound, -1)
 134
 135     def test_wrong_hop_size(self):
 136         with self.assertRaises(ValueError):
 137             source(self.default_test_sound, 0, -1)
 138
 139     def test_wrong_channels(self):
 140         with self.assertRaises(ValueError):
 141             source(self.default_test_sound, 0, 0, -1)
 142
 143     def test_wrong_seek(self):
 144         f = source(self.default_test_sound)
 145         with self.assertRaises(ValueError):
 146             f.seek(-1)
 147
 148     def test_wrong_seek_too_large(self):
 149         f = source(self.default_test_sound)
 150         try:
 151             with self.assertRaises(ValueError):
 152                 f.seek(f.duration + f.samplerate * 10)
 153         except AssertionError:
 154             self.skipTest('seeking after end of stream failed raising ValueError')
 155
 156 class aubio_source_readmulti_test_case(aubio_source_read_test_case):
 157
 158     def read_from_source(self, f):
 159         total_frames = 0
 160         while True:
 161             samples, read = f.do_multi()
 162             total_frames += read
 163             if read < f.hop_size:
 164                 assert_equal(samples[:,read:], 0)
 165                 break
 166         #result_str = "read {:.2f}s ({:d} frames in {:d} channels and {:d} blocks at {:d}Hz) from {:s}"
 167         #result_params = total_frames / float(f.samplerate), total_frames, f.channels, int(total_frames/f.hop_size), f.samplerate, f.uri
 168         #print (result_str.format(*result_params))
 169         return total_frames
 170
 171 class aubio_source_with(aubio_source_test_case_base):
 172
 173     #@params(*list_of_sounds)
 174     @params(*list_of_sounds)
 175     def test_read_from_mono(self, filename):
 176         total_frames = 0
 177         hop_size = 2048
 178         with source(filename, 0, hop_size) as input_source:
 179             assert_equal(input_source.hop_size, hop_size)
 180             #assert_equal(input_source.samplerate, samplerate)
 181             total_frames = 0
 182             for frames in input_source:
 183                 total_frames += frames.shape[-1]
 184             # check we read as many samples as we expected
 185             assert_equal(total_frames, input_source.duration)
 186
 187 if __name__ == '__main__':
 188     main()