You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
3.5 KiB
103 lines
3.5 KiB
1 year ago
|
# !/usr/bin/env python3
|
||
|
|
# -*- coding: utf-8 -*-
|
||
|
|
#
|
||
|
|
# Copyright 2016-2099 Ailemon.net
|
||
|
|
#
|
||
|
|
# This file is part of ASRT Speech Recognition Tool.
|
||
|
|
#
|
||
|
|
# ASRT is free software: you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU General Public License as published by
|
||
|
|
# the Free Software Foundation, either version 3 of the License, or
|
||
|
|
# (at your option) any later version.
|
||
|
|
# ASRT is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU General Public License
|
||
|
|
# along with ASRT. If not, see <https://www.gnu.org/licenses/>.
|
||
|
|
# ============================================================================
|
||
|
|
|
||
|
|
"""
|
||
|
|
@author: nl8590687
|
||
|
|
加载语音数据集用的数据加载器的定义
|
||
|
|
"""
|
||
|
|
import os
|
||
|
|
import random
|
||
|
|
import numpy as np
|
||
|
|
from utils.config import load_config_file, DEFAULT_CONFIG_FILENAME, load_pinyin_dict
|
||
|
|
from utils.ops import read_wav_data
|
||
|
|
|
||
|
|
|
||
|
|
class DataLoader:
|
||
|
|
"""
|
||
|
|
数据加载器
|
||
|
|
|
||
|
|
参数：\\
|
||
|
|
config: 配置信息字典
|
||
|
|
dataset_type: 要加载的数据集类型，包含('train', 'dev', 'test')三种
|
||
|
|
"""
|
||
|
|
def __init__(self, dataset_type:str):
|
||
|
|
self.dataset_type = dataset_type
|
||
|
|
|
||
|
|
self.data_list = list()
|
||
|
|
self.wav_dict = dict()
|
||
|
|
self.label_dict = dict()
|
||
|
|
self.pinyin_list = list()
|
||
|
|
self.pinyin_dict = dict()
|
||
|
|
self._load_data()
|
||
|
|
|
||
|
|
def _load_data(self):
|
||
|
|
config = load_config_file(DEFAULT_CONFIG_FILENAME)
|
||
|
|
|
||
|
|
self.pinyin_list, self.pinyin_dict = load_pinyin_dict(config['dict_filename'])
|
||
|
|
|
||
|
|
for index in range(len(config['dataset'][self.dataset_type])):
|
||
|
|
filename_datalist = config['dataset'][self.dataset_type][index]['data_list']
|
||
|
|
filename_datapath = config['dataset'][self.dataset_type][index]['data_path']
|
||
|
|
with open(filename_datalist, 'r', encoding='utf-8') as file_pointer:
|
||
|
|
lines = file_pointer.read().split('\n')
|
||
|
|
for line in lines:
|
||
|
|
if len(line) == 0:
|
||
|
|
continue
|
||
|
|
tokens = line.split(' ')
|
||
|
|
self.data_list.append(tokens[0])
|
||
|
|
self.wav_dict[tokens[0]] = os.path.join(filename_datapath, tokens[1])
|
||
|
|
|
||
|
|
filename_labellist = config['dataset'][self.dataset_type][index]['label_list']
|
||
|
|
with open(filename_labellist, 'r', encoding='utf-8') as file_pointer:
|
||
|
|
lines = file_pointer.read().split('\n')
|
||
|
|
for line in lines:
|
||
|
|
if len(line) == 0:
|
||
|
|
continue
|
||
|
|
tokens = line.split(' ')
|
||
|
|
self.label_dict[tokens[0]] = tokens[1:]
|
||
|
|
|
||
|
|
def get_data_count(self) -> int:
|
||
|
|
"""
|
||
|
|
获取数据集总数量
|
||
|
|
"""
|
||
|
|
return len(self.data_list)
|
||
|
|
|
||
|
|
def get_data(self, index: int) -> tuple:
|
||
|
|
"""
|
||
|
|
按下标获取一条数据
|
||
|
|
"""
|
||
|
|
mark = self.data_list[index]
|
||
|
|
|
||
|
|
wav_signal, sample_rate, _, _ = read_wav_data(self.wav_dict[mark])
|
||
|
|
labels = list()
|
||
|
|
for item in self.label_dict[mark]:
|
||
|
|
if len(item) == 0:
|
||
|
|
continue
|
||
|
|
labels.append(self.pinyin_dict[item])
|
||
|
|
|
||
|
|
data_label = np.array(labels)
|
||
|
|
return wav_signal, sample_rate, data_label
|
||
|
|
|
||
|
|
def shuffle(self) -> None:
|
||
|
|
"""
|
||
|
|
随机打乱数据
|
||
|
|
"""
|
||
|
|
random.shuffle(self.data_list)
|