Apply initial gain to music file

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

# -*- coding: utf-8 -*-
from .music_file import *
from .mapping import *
from .lock import *
from .font import *
import yaml

def parse_config(mapping):
    stream = open("config.yml", "r")
    config = yaml.load(stream)
    stream.close()

    aliases = config['aliases']
    seen_files = {}

    file_lock = Lock("file")

    channel_id = 0

    for mapped_key in config['keys']:
        key = mapping.find_by_unicode(mapped_key)
        if key is None:
            continue

        for action in config['keys'][mapped_key]:
            action_name = list(action)[0]
            action_args = {}
            if action[action_name] is None:
                action[action_name] = []

            if 'include' in action[action_name]:
                included = action[action_name]['include']
                del(action[action_name]['include'])

                if isinstance(included, str):
                    action[action_name].update(aliases[included], **action[action_name])
                else:
                    for included_ in included:
                        action[action_name].update(aliases[included_], **action[action_name])

            for argument in action[action_name]:
                if argument == 'file':
                    filename = action[action_name]['file']
                    if filename not in seen_files:
                        if filename in config['music_properties']:
                            seen_files[filename] = MusicFile(
                                    filename,
                                    file_lock,
                                    channel_id, 
                                    **config['music_properties'][filename])
                        else:
                            seen_files[filename] = MusicFile(
                                    filename,
                                    file_lock,
                                    channel_id)
                        channel_id = channel_id + 1

                    action_args['music'] = seen_files[filename]

                else:
                    action_args[argument] = action[action_name][argument]

            key.add_action(action_name, **action_args)

    for key_property in config['key_properties']:
        key = mapping.find_by_unicode(key_property)
        if key is None:
            continue

        if 'description' in config['key_properties'][key_property]:
            key.set_description(config['key_properties'][key_property]['description'])
        if 'color' in config['key_properties'][key_property]:
            key.set_color(config['key_properties'][key_property]['color'])

    # Return the number of channels reserved
    return (channel_id + 1, seen_files)