python/tests/utils.py

   1 #! /usr/bin/env python
   2
   3 import os
   4 import glob
   5 import numpy as np
   6 from tempfile import mkstemp
   7
   8 def array_from_text_file(filename, dtype = 'float'):
   9     filename = os.path.join(os.path.dirname(__file__), filename)
  10     with open(filename) as f:
  11         lines = f.readlines()
  12     return np.array([line.split() for line in lines],
  13             dtype = dtype)
  14
  15 def list_all_sounds(rel_dir):
  16     datadir = os.path.join(os.path.dirname(__file__), rel_dir)
  17     return glob.glob(os.path.join(datadir,'*.*'))
  18
  19 def get_default_test_sound(TestCase, rel_dir = 'sounds'):
  20     all_sounds = list_all_sounds(rel_dir)
  21     if len(all_sounds) == 0:
  22         TestCase.skipTest("please add some sounds in \'python/tests/sounds\'")
  23     else:
  24         return all_sounds[0]
  25
  26 def get_tmp_sink_path():
  27     fd, path = mkstemp()
  28     os.close(fd)
  29     return path
  30
  31 def del_tmp_sink_path(path):
  32     try:
  33         os.unlink(path)
  34     except WindowsError as e:
  35         print("deleting {:s} failed ({:s}), reopening".format(path, repr(e)))
  36         with open(path, 'wb') as f:
  37             f.close()
  38         try:
  39             os.unlink(path)
  40         except WindowsError as f:
  41             print("deleting {:s} failed ({:s}), aborting".format(path, repr(e)))
  42
  43 def array_from_yaml_file(filename):
  44     import yaml
  45     f = open(filename)
  46     yaml_data = yaml.safe_load(f)
  47     f.close()
  48     return yaml_data
  49
  50 def count_samples_in_file(file_path):
  51     from aubio import source
  52     hopsize = 256
  53     s = source(file_path, 0, hopsize)
  54     total_frames = 0
  55     while True:
  56         _, read = s()
  57         total_frames += read
  58         if read < hopsize: break
  59     return total_frames
  60
  61 def count_samples_in_directory(samples_dir):
  62     total_frames = 0
  63     for f in os.walk(samples_dir):
  64         if len(f[2]):
  65             for each in f[2]:
  66                 file_path = os.path.join(f[0], each)
  67                 if file_path:
  68                     total_frames += count_samples_in_file(file_path)
  69     return total_frames
  70
  71 def count_files_in_directory(samples_dir):
  72     total_files = 0
  73     for f in os.walk(samples_dir):
  74         if len(f[2]):
  75             for each in f[2]:
  76                 file_path = os.path.join(f[0], each)
  77                 if file_path:
  78                     total_files += 1
  79     return total_files