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.
75 lines
2.6 KiB
75 lines
2.6 KiB
3 years ago
|
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
# you may not use this file except in compliance with the License.
|
||
|
|
# You may obtain a copy of the License at
|
||
|
|
#
|
||
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
#
|
||
|
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
# See the License for the specific language governing permissions and
|
||
|
|
# limitations under the License.
|
||
|
|
import collections
|
||
|
|
import json
|
||
|
|
import os
|
||
|
|
from typing import List
|
||
|
|
from typing import Tuple
|
||
|
|
|
||
|
|
from .dataset import AudioClassificationDataset
|
||
|
|
|
||
|
|
__all__ = ['HeySnips']
|
||
|
|
|
||
|
|
|
||
|
|
class HeySnips(AudioClassificationDataset):
|
||
|
|
meta_info = collections.namedtuple('META_INFO',
|
||
|
|
('key', 'label', 'duration', 'wav'))
|
||
|
|
|
||
|
|
def __init__(self,
|
||
|
|
data_dir: os.PathLike,
|
||
|
|
mode: str='train',
|
||
|
|
feat_type: str='kaldi_fbank',
|
||
|
|
sample_rate: int=16000,
|
||
|
|
**kwargs):
|
||
|
|
self.data_dir = data_dir
|
||
|
|
files, labels = self._get_data(mode)
|
||
|
|
super(HeySnips, self).__init__(
|
||
|
|
files=files,
|
||
|
|
labels=labels,
|
||
|
|
feat_type=feat_type,
|
||
|
|
sample_rate=sample_rate,
|
||
|
|
**kwargs)
|
||
|
|
|
||
|
|
def _get_meta_info(self, mode) -> List[collections.namedtuple]:
|
||
|
|
ret = []
|
||
|
|
with open(os.path.join(self.data_dir, '{}.json'.format(mode)),
|
||
|
|
'r') as f:
|
||
|
|
data = json.load(f)
|
||
|
|
for item in data:
|
||
|
|
sample = collections.OrderedDict()
|
||
|
|
if item['duration'] > 0:
|
||
|
|
sample['key'] = item['id']
|
||
|
|
sample['label'] = 0 if item['is_hotword'] == 1 else -1
|
||
|
|
sample['duration'] = item['duration']
|
||
|
|
sample['wav'] = os.path.join(self.data_dir,
|
||
|
|
item['audio_file_path'])
|
||
|
|
ret.append(self.meta_info(*sample.values()))
|
||
|
|
return ret
|
||
|
|
|
||
|
|
def _get_data(self, mode: str) -> Tuple[List[str], List[int]]:
|
||
|
|
meta_info = self._get_meta_info(mode)
|
||
|
|
|
||
|
|
files = []
|
||
|
|
labels = []
|
||
|
|
self.keys = []
|
||
|
3 years ago
|
self.durations = []
|
||
|
3 years ago
|
for sample in meta_info:
|
||
|
3 years ago
|
key, target, duration, wav = sample
|
||
|
3 years ago
|
files.append(wav)
|
||
|
|
labels.append(int(target))
|
||
|
|
self.keys.append(key)
|
||
|
3 years ago
|
self.durations.append(float(duration))
|
||
|
3 years ago
|
|
||
|
|
return files, labels
|