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@ -1,23 +1,48 @@
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import numpy as np
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import logging
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import argparse
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import asyncio
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import codecs
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# 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 json
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import logging
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import os
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import numpy as np
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import soundfile
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import websockets
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from paddlespeech.cli.log import logger
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class ASRAudioHandler:
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def __init__(self, url="127.0.0.1", port=8090):
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"""PaddleSpeech Online ASR Server Client audio handler
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Online asr server use the websocket protocal
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Args:
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url (str, optional): the server ip. Defaults to "127.0.0.1".
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port (int, optional): the server port. Defaults to 8090.
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"""
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self.url = url
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self.port = port
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self.url = "ws://" + self.url + ":" + str(self.port) + "/ws/asr"
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def read_wave(self, wavfile_path: str):
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"""read the audio file from specific wavfile path
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Args:
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wavfile_path (str): the audio wavfile,
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we assume that audio sample rate matches the model
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Yields:
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numpy.array: the samall package audio pcm data
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"""
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samples, sample_rate = soundfile.read(wavfile_path, dtype='int16')
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x_len = len(samples)
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@ -40,11 +65,19 @@ class ASRAudioHandler:
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yield x_chunk
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async def run(self, wavfile_path: str):
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"""Send a audio file to online server
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Args:
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wavfile_path (str): audio path
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Returns:
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str: the final asr result
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"""
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logging.info("send a message to the server")
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# self.read_wave()
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# send websocket handshake protocal
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# 1. send websocket handshake protocal
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async with websockets.connect(self.url) as ws:
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# server has already received handshake protocal
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# 2. server has already received handshake protocal
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# client start to send the command
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audio_info = json.dumps(
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{
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@ -59,14 +92,14 @@ class ASRAudioHandler:
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msg = await ws.recv()
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logger.info("receive msg={}".format(msg))
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# send chunk audio data to engine
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# 3. send chunk audio data to engine
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for chunk_data in self.read_wave(wavfile_path):
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await ws.send(chunk_data.tobytes())
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msg = await ws.recv()
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msg = json.loads(msg)
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logger.info("receive msg={}".format(msg))
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# finished
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# 4. we must send finished signal to the server
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audio_info = json.dumps(
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{
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"name": "test.wav",
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@ -79,7 +112,7 @@ class ASRAudioHandler:
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await ws.send(audio_info)
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msg = await ws.recv()
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# decode the bytes to str
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# 5. decode the bytes to str
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msg = json.loads(msg)
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logger.info("final receive msg={}".format(msg))
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result = msg
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