# -*- coding: utf-8 -*-
import argparse
import sys
import os
import math
import sounddevice as sd
import logging
import gettext
import yaml
gettext.install('music_sampler')
Logger = logging.getLogger("kivy")
from . import sysfont
class Config:
pass
def find_font(name, style=sysfont.STYLE_NONE):
if getattr(sys, 'frozen', False):
font = sys._MEIPASS + "/fonts/{}_{}.ttf".format(name, style)
else:
font = sysfont.get_font(name, style=style)
if font is not None:
font = font[4]
return font
def register_fonts():
from kivy.core.text import LabelBase
ubuntu_regular = find_font("Ubuntu", style=sysfont.STYLE_NORMAL)
ubuntu_bold = find_font("Ubuntu", style=sysfont.STYLE_BOLD)
symbola = find_font("Symbola")
if ubuntu_regular is None:
error_print("Font Ubuntu regular could not be found, "
"please install it.", exit=True)
if symbola is None:
error_print("Font Symbola could not be found, please install it.",
exit=True)
if ubuntu_bold is None:
warn_print("Font Ubuntu Bold could not be found.")
LabelBase.register(name="Ubuntu",
fn_regular=ubuntu_regular,
fn_bold=ubuntu_bold)
LabelBase.register(name="Symbola",
fn_regular=symbola)
def path():
if getattr(sys, 'frozen', False):
return sys._MEIPASS + "/"
else:
return os.path.dirname(os.path.realpath(__file__))
Configs = {
'music_path': {
'abbr': '-p',
'default': '.',
'help': _("Folder in which to find the music files"),
'type': None
},
'latency': {
'abbr': '-l',
'default': 'high',
'help': _("Latency: low, high or number of seconds"),
'type': None
},
'language': {
'abbr': '-L',
'default': "fr",
'help': _("Select another language"),
'type': None
},
'device': {
'abbr': '-d',
'default': None,
'help': _("Select this sound device"),
'type': None
},
'blocksize': {
'abbr': '-b',
'default': 0,
'help': _("Blocksize: If not 0, the number of frames to take\
at each step for the mixer"),
'type': int
},
'frame_rate': {
'abbr': '-f',
'default': 44100,
'help': _("Frame rate to play the musics"),
'type': int
},
'channels': {
'abbr': '-x',
'default': 2,
'help': _("Number of channels to use"),
'type': int
},
'sample_width': {
'abbr': '-s',
'default': 2,
'help': _("Sample width (number of bytes for each frame)"),
'type': int
},
'builtin_mixing': {
'default': False,
'help_yes': _("Make the mixing of sounds manually\
(do it if the system cannot handle it correctly)"),
'help_no': _("Don't make the mixing of sounds manually (default)"),
'type': 'boolean'
},
'debug': {
'abbr': '-d',
'default': False,
'help_yes': _("Print messages in console"),
'help_no': _("Don't print messages in console (default)"),
'type': 'boolean'
},
'focus_warning': {
'default': True,
'help_yes': _("Show a warning when focus is lost (default)"),
'help_no': _("Don't show warning when focus is lost"),
'type': 'boolean'
},
'load_all_musics': {
'default': True,
'help_yes': _("Load all the musics at launch time (default)"),
'help_no': _("Don't load all the musics at launch time (use it if you \
have memory problems)"),
'type': 'boolean'
},
'list_devices': {
'help': _("List available sound devices"),
'type': 'action'
},
}
Configs_order = [
'debug',
'music_path',
'builtin_mixing',
'latency',
'blocksize',
'frame_rate',
'channels',
'sample_width',
'focus_warning',
'language',
'list_devices',
'device',
'load_all_musics',
]
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)
os.environ["KIVY_NO_CONFIG"] = 'true'
sys.argv.extend(["-c", "kivy:log_level:warning"])
sys.argv.extend(["-c", "kivy:log_dir:/tmp"])
sys.argv.extend(["-c", "kivy:log_name:/tmp/music_sampler_%_.txt"])
parser = argparse.ArgumentParser(
argument_default=argparse.SUPPRESS,
description=_("A Music Sampler application."))
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("-c", "--config",
default="config.yml",
required=False,
help=_("Config file to load (default: config.yml)"))
for argument in Configs_order:
arg = Configs[argument]
if arg['type'] != 'boolean' and arg['type'] != 'action':
parser.add_argument(arg['abbr'], '--' + argument.replace('_', '-'),
type=arg['type'],
help=arg['help']+_(" (default: {})").format(arg['default']))
elif arg['type'] == 'boolean':
parser.add_argument('--' + argument.replace('_', '-'),
action='store_const', const=True,
help=arg['help_yes'])
parser.add_argument('--no-' + argument.replace('_', '-'),
action='store_const', const=True,
help=arg['help_no'])
else:
parser.add_argument('--' + argument.replace('_', '-'),
action='store_const', const=True,
help=arg['help'])
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
build_config(args)
if Config.device is not None:
sd.default.device = Config.device
if Config.list_devices:
print(sd.query_devices())
sys.exit()
if Config.debug:
sys.argv.extend(["-c", "kivy:log_level:debug"])
if Config.language != 'en':
gettext.translation("music_sampler",
localedir=path() + '/locales',
languages=[Config.language]).install()
if not Config.music_path.endswith("/"):
Config.music_path = Config.music_path + "/"
def dump_config():
max_size = max(max(map(len, Configs_order)), len('config'))
info_print("{:<{}} : {}".format(
"config", max_size, Config.yml_file))
for item in Config.__dict__:
if item in Configs_order:
info_print("{:<{}} : {}".format(
item, max_size, getattr(Config, item)))
def build_config(args):
stream = open(Config.yml_file, "r")
try:
config = yaml.safe_load(stream)
except Exception as e:
error_print("Error while loading config file: {}".format(e))
config = {}
stream.close()
if 'config' in config:
config = config['config']
else:
config = {}
for config_item in Configs_order:
if Configs[config_item]['type'] != 'boolean' and \
Configs[config_item]['type'] != 'action':
t = Configs[config_item]['type'] or str
if hasattr(args, config_item):
setattr(Config, config_item, getattr(args, config_item))
elif config_item in config:
setattr(Config, config_item, t(config[config_item]))
else:
setattr(Config, config_item, Configs[config_item]['default'])
elif Configs[config_item]['type'] == 'boolean':
if hasattr(args, 'no_' + config_item) or hasattr(args, config_item):
setattr(Config, config_item, hasattr(args, config_item))
elif config_item in config:
setattr(Config, config_item, config[config_item])
else:
setattr(Config, config_item, Configs[config_item]['default'])
else:
setattr(Config, config_item, hasattr(args, config_item))
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(max(volume, 0.1) / 100)
else:
return [
20 * math.log10(max(volume, 0.1) / max(old_volume, 0.1)),
max(volume, 0)]
def debug_print(message, with_trace=None):
if with_trace is None:
with_trace = (Logger.getEffectiveLevel() < logging.WARN)
with_trace &= (sys.exc_info()[0] is not None)
Logger.debug('MusicSampler: ' + message, exc_info=with_trace)
def error_print(message, exit=False, with_trace=None):
if with_trace is None:
with_trace = (Logger.getEffectiveLevel() < logging.WARN)
with_trace &= (sys.exc_info()[0] is not None)
# FIXME: handle it correctly when in a thread
if exit:
Logger.critical('MusicSampler: ' + message, exc_info=with_trace)
sys.exit(1)
else:
Logger.error('MusicSampler: ' + message, exc_info=with_trace)
def warn_print(message, with_trace=None):
if with_trace is None:
with_trace = (Logger.getEffectiveLevel() < logging.WARN)
with_trace &= (sys.exc_info()[0] is not None)
Logger.warn('MusicSampler: ' + message, exc_info=with_trace)
def info_print(message, with_trace=None):
if with_trace is None:
with_trace = (Logger.getEffectiveLevel() < logging.WARN)
with_trace &= (sys.exc_info()[0] is not None)
Logger.info('MusicSampler: ' + message, exc_info=with_trace)
