Some new features:

[perso/Immae/Projets/Python/MusicSampler.git] / helpers / __init__.py

diff --git a/helpers/__init__.py b/helpers/__init__.py
index f3e59674ecfddb151ef730552187e0e858b37135..2339b9ba7852318d043abf45373a3a38f089089c 100644 (file)
--- a/helpers/__init__.py
+++ b/helpers/__init__.py
@@ -1,6 +1,15 @@
 # -*- coding: utf-8 -*-
+import argparse
 import sys
 import os
+import math
+
+class Config:
+    def __init__(self, **kwargs):
+        for arg in kwargs:
+            setattr(self, arg, kwargs[arg])
+
+config = Config(yml_file="config.yml")
 
 def path():
     if getattr(sys, 'frozen', False):
@@ -10,17 +19,40 @@ def path():
         return path + "/../"
 
 def parse_args():
-    for arg in sys.argv:
-        if arg == "-v":
-            sys.argv.remove(arg)
-
-            if getattr(sys, 'frozen', False):
-                f = open(path() + ".pyinstaller_commit", "r")
-                print(f.read(), end="")
-                f.close()
-            else:
-                print("option '-v' can only be used in bundled package")
-            sys.exit()
+    argv = sys.argv[1:]
+    sys.argv = sys.argv[:1]
+    if "--" in argv:
+        index = argv.index("--")
+        kivy_args = argv[index+1:]
+        argv = argv[:index]
+
+        sys.argv.extend(kivy_args)
+
+    parser = argparse.ArgumentParser(description="A Music Sampler application.")
+    parser.add_argument("-c", "--config",
+            default="config.yml",
+            required=False,
+            help="Config file to load")
+    parser.add_argument("-V", "--version",
+            action="version",
+            help="Displays the current version and exits. Only use in bundled package",
+            version=show_version())
+    parser.add_argument('--',
+            dest="args",
+            help="Kivy arguments. All arguments after this are interpreted by Kivy. Pass \"-- --help\" to get Kivy's usage.")
+    args = parser.parse_args(argv)
+
+    config.yml_file = args.config
+
+def show_version():
+    if getattr(sys, 'frozen', False):
+        with open(path() + ".pyinstaller_commit", "r") as f:
+            return f.read()
+    else:
+        return "option '-v' can only be used in bundled package"
+
+def yml_file():
+    return config.yml_file
 
 def duration_to_min_sec(duration):
     minutes = int(duration / 60)
@@ -29,3 +61,10 @@ def duration_to_min_sec(duration):
         return "{:2}:{:0>2}".format(minutes, seconds)
     else:
         return "{}:{:0>2}".format(minutes, seconds)
+
+def gain(volume, old_volume = None):
+    if old_volume is None:
+        return 20 * math.log10(volume / 100)
+    else:
+        return [20 * math.log10(max(volume, 0.1) / max(old_volume, 0.1)), max(volume, 0)]
+