X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=helpers%2F__init__.py;h=ce8f04bf026a55840f2a4b095f9954484c9ef6ea;hb=d6290f14246b69e10a73e2798dd3905e866b3e88;hp=70667fd21d01a1a11578030feef544c1a0be7e2e;hpb=bb69f62e140efde8e93f7b62bf8723113bf30b06;p=perso%2FImmae%2FProjets%2FPython%2FMusicSampler.git

diff --git a/helpers/__init__.py b/helpers/__init__.py
index 70667fd..ce8f04b 100644
--- a/helpers/__init__.py
+++ b/helpers/__init__.py
@@ -1,6 +1,12 @@
 # -*- coding: utf-8 -*-
+import argparse
 import sys
 import os
+import math
+import sounddevice as sd
+
+class Config:
+    pass
 
 def path():
     if getattr(sys, 'frozen', False):
@@ -9,3 +15,104 @@ def path():
         path = os.path.dirname(os.path.realpath(__file__))
         return path + "/../"
 
+def parse_args():
+    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.",
+            formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+    parser.add_argument("-c", "--config",
+            default="config.yml",
+            required=False,
+            help="Config file to load")
+    parser.add_argument("-m", "--builtin-mixing",
+            action="store_true",
+            help="Make the mixing of sounds manually (do it if the system cannot handle it correctly)")
+    parser.add_argument("-l", "--latency",
+            default="high",
+            required=False,
+            help="Latency: low, high or number of seconds")
+    parser.add_argument("-b", "--blocksize",
+            default=0,
+            type=int,
+            required=False,
+            help="Blocksize: If not 0, the numbe of frames to take at each step for the mixer")
+    parser.add_argument("-f", "--frame-rate",
+            default=44100,
+            type=int,
+            required=False,
+            help="Frame rate to play the musics")
+    parser.add_argument("-x", "--channels",
+            default=2,
+            type=int,
+            required=False,
+            help="Number of channels to use")
+    parser.add_argument("-s", "--sample-width",
+            default=2,
+            type=int,
+            required=False,
+            help="Sample width (number of bytes for each frame)")
+    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("--device",
+            action=SelectDeviceAction,
+            help="Select this sound device"
+            )
+    parser.add_argument("--list-devices",
+            nargs=0,
+            action=ListDevicesAction,
+            help="List available sound devices"
+            )
+    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
+    Config.latency = args.latency
+    Config.blocksize = args.blocksize
+    Config.frame_rate = args.frame_rate
+    Config.channels = args.channels
+    Config.sample_width = args.sample_width
+    Config.builtin_mixing = args.builtin_mixing
+
+class SelectDeviceAction(argparse.Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        sd.default.device = values
+
+class ListDevicesAction(argparse.Action):
+    nargs = 0
+    def __call__(self, parser, namespace, values, option_string=None):
+        print(sd.query_devices())
+        sys.exit()
+
+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 duration_to_min_sec(duration):
+    minutes = int(duration / 60)
+    seconds = int(duration) % 60
+    if minutes < 100:
+        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)]
+