# -*- 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):
return sys._MEIPASS + "/"
else:
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)]
