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68 lines
1.9 KiB
68 lines
1.9 KiB
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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from abc import ABC
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from abc import abstractmethod
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from typing import Optional
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from typing import Union
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import paddle
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class BaseExecutor(ABC):
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"""
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An abstract executor of paddlespeech tasks.
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"""
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def __init__(self):
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self.input = None
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self.output = None
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@abstractmethod
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def _get_default_cfg_path(self):
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"""
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Returns a default config file path of current task.
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"""
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pass
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@abstractmethod
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def _init_from_cfg(self, cfg_path: Optional[os.PathLike]=None):
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"""
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Init model from a specific config file.
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"""
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pass
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@abstractmethod
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def preprocess(self, input: Union[str, os.PathLike]):
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"""
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Input preprocess and return paddle.Tensor stored in self.input.
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Input content can be a text(t2s), a file(s2t, cls) or a streaming(not supported yet).
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"""
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pass
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@paddle.no_grad()
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@abstractmethod
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def infer(self, device: str):
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"""
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Model inference and result stored in self.output.
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"""
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pass
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@abstractmethod
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def postprocess(self) -> Union[str, os.PathLike]:
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"""
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Output postprocess and return human-readable results such as texts and audio files.
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"""
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pass
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