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126 lines
3.9 KiB
126 lines
3.9 KiB
# Copyright (c) 2022 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 io
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import sys
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import time
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import paddle
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from paddlespeech.cli.asr.infer import ASRExecutor
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from paddlespeech.cli.log import logger
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from paddlespeech.server.engine.base_engine import BaseEngine
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__all__ = ['ASREngine', 'PaddleASRConnectionHandler']
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class ASRServerExecutor(ASRExecutor):
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def __init__(self):
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super().__init__()
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pass
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class ASREngine(BaseEngine):
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"""ASR server engine
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Args:
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metaclass: Defaults to Singleton.
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"""
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def __init__(self):
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super(ASREngine, self).__init__()
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def init(self, config: dict) -> bool:
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"""init engine resource
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Args:
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config_file (str): config file
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Returns:
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bool: init failed or success
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"""
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self.executor = ASRServerExecutor()
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self.config = config
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self.engine_type = "python"
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try:
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if self.config.device is not None:
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self.device = self.config.device
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else:
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self.device = paddle.get_device()
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paddle.set_device(self.device)
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except Exception as e:
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logger.error(
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"Set device failed, please check if device is already used and the parameter 'device' in the yaml file"
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)
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logger.error(e)
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return False
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self.executor._init_from_path(
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model_type=self.config.model,
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lang=self.config.lang,
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sample_rate=self.config.sample_rate,
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cfg_path=self.config.cfg_path,
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decode_method=self.config.decode_method,
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ckpt_path=self.config.ckpt_path)
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logger.info("Initialize ASR server engine successfully on device: %s." %
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(self.device))
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return True
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class PaddleASRConnectionHandler(ASRServerExecutor):
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def __init__(self, asr_engine):
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"""The PaddleSpeech ASR Server Connection Handler
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This connection process every asr server request
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Args:
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asr_engine (ASREngine): The ASR engine
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"""
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super().__init__()
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self.input = None
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self.output = None
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self.asr_engine = asr_engine
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self.executor = self.asr_engine.executor
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self.max_len = self.executor.max_len
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self.text_feature = self.executor.text_feature
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self.model = self.executor.model
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self.config = self.executor.config
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def run(self, audio_data):
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"""engine run
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Args:
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audio_data (bytes): base64.b64decode
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"""
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try:
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if self._check(
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io.BytesIO(audio_data), self.asr_engine.config.sample_rate,
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self.asr_engine.config.force_yes):
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logger.debug("start run asr engine")
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self.preprocess(self.asr_engine.config.model,
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io.BytesIO(audio_data))
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st = time.time()
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self.infer(self.asr_engine.config.model)
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infer_time = time.time() - st
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self.output = self.postprocess() # Retrieve result of asr.
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else:
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logger.error("file check failed!")
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self.output = None
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logger.info("inference time: {}".format(infer_time))
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logger.info("asr engine type: python")
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except Exception as e:
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logger.info(e)
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sys.exit(-1)
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