helpers/__init__.py

   1 # -*- coding: utf-8 -*-
   2 import argparse
   3 import sys
   4 import os
   5 import math
   6
   7 class Config:
   8     def __init__(self, **kwargs):
   9         for arg in kwargs:
  10             setattr(self, arg, kwargs[arg])
  11
  12 config = Config(yml_file="config.yml")
  13
  14 def path():
  15     if getattr(sys, 'frozen', False):
  16         return sys._MEIPASS + "/"
  17     else:
  18         path = os.path.dirname(os.path.realpath(__file__))
  19         return path + "/../"
  20
  21 def parse_args():
  22     argv = sys.argv[1:]
  23     sys.argv = sys.argv[:1]
  24     if "--" in argv:
  25         index = argv.index("--")
  26         kivy_args = argv[index+1:]
  27         argv = argv[:index]
  28
  29         sys.argv.extend(kivy_args)
  30
  31     parser = argparse.ArgumentParser(description="A Music Sampler application.")
  32     parser.add_argument("-c", "--config",
  33             default="config.yml",
  34             required=False,
  35             help="Config file to load")
  36     parser.add_argument("-V", "--version",
  37             action="version",
  38             help="Displays the current version and exits. Only use in bundled package",
  39             version=show_version())
  40     parser.add_argument('--',
  41             dest="args",
  42             help="Kivy arguments. All arguments after this are interpreted by Kivy. Pass \"-- --help\" to get Kivy's usage.")
  43     args = parser.parse_args(argv)
  44
  45     config.yml_file = args.config
  46
  47 def show_version():
  48     if getattr(sys, 'frozen', False):
  49         with open(path() + ".pyinstaller_commit", "r") as f:
  50             return f.read()
  51     else:
  52         return "option '-v' can only be used in bundled package"
  53
  54 def yml_file():
  55     return config.yml_file
  56
  57 def duration_to_min_sec(duration):
  58     minutes = int(duration / 60)
  59     seconds = int(duration) % 60
  60     if minutes < 100:
  61         return "{:2}:{:0>2}".format(minutes, seconds)
  62     else:
  63         return "{}:{:0>2}".format(minutes, seconds)
  64
  65 def gain(volume, old_volume = None):
  66     if old_volume is None:
  67         return 20 * math.log10(volume / 100)
  68     else:
  69         return [20 * math.log10(max(volume, 0.1) / max(old_volume, 0.1)), max(volume, 0)]
  70