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import time, threading, json
class AliyunASR():
def test_on_sentence_begin(self, message, *args):
# print("test_on_sentence_begin:{}".format(message))
pass
def test_on_sentence_end(self, message, *args):
# print("test_on_sentence_end:{}".format(message))
message = json.loads(message)
self.parsed_sentence = message['payload']['result']
self.event_on_entence_end.set()
print(self.parsed_sentence)
def test_on_start(self, message, *args):
# print("test_on_start:{}".format(message))
pass
def test_on_error(self, message, *args):
print("on_error args=>{}".format(args))
pass
def test_on_close(self, *args):
self.aliyun_service_ok = False
pass
def test_on_result_chg(self, message, *args):
# print("test_on_chg:{}".format(message))
message = json.loads(message)
self.parsed_text = message['payload']['result']
self.event_on_result_chg.set()
def test_on_completed(self, message, *args):
# print("on_completed:args=>{} message=>{}".format(args, message))
pass
def audio_convertion_thread(self, uuid):
# 在一个异步线程中采集音频
import nls # pip install git+https://github.com/aliyun/alibabacloud-nls-python-sdk.git
import tempfile
from scipy import io
from toolbox import get_conf
from .audio_io import change_sample_rate
from .audio_io import RealtimeAudioDistribution
NEW_SAMPLERATE = 16000
rad = RealtimeAudioDistribution()
rad.clean_up()
temp_folder = tempfile.gettempdir()
TOKEN, APPKEY = get_conf('ALIYUN_TOKEN', 'ALIYUN_APPKEY')
if len(TOKEN) == 0:
TOKEN = self.get_token()
self.aliyun_service_ok = True
URL="wss://nls-gateway.aliyuncs.com/ws/v1"
sr = nls.NlsSpeechTranscriber(
url=URL,
token=TOKEN,
appkey=APPKEY,
on_sentence_begin=self.test_on_sentence_begin,
on_sentence_end=self.test_on_sentence_end,
on_start=self.test_on_start,
on_result_changed=self.test_on_result_chg,
on_completed=self.test_on_completed,
on_error=self.test_on_error,
on_close=self.test_on_close,
callback_args=[uuid.hex]
)
r = sr.start(aformat="pcm",
enable_intermediate_result=True,
enable_punctuation_prediction=True,
enable_inverse_text_normalization=True)
while not self.stop:
# time.sleep(self.capture_interval)
audio = rad.read(uuid.hex)
if audio is not None:
# convert to pcm file
temp_file = f'{temp_folder}/{uuid.hex}.pcm' #
dsdata = change_sample_rate(audio, rad.rate, NEW_SAMPLERATE) # 48000 --> 16000
io.wavfile.write(temp_file, NEW_SAMPLERATE, dsdata)
# read pcm binary
with open(temp_file, "rb") as f: data = f.read()
# print('audio len:', len(audio), '\t ds len:', len(dsdata), '\t need n send:', len(data)//640)
slices = zip(*(iter(data),) * 640) # 640个字节为一组
for i in slices: sr.send_audio(bytes(i))
else:
time.sleep(0.1)
if not self.aliyun_service_ok:
self.stop = True
self.stop_msg = 'Aliyun音频服务异常，请检查ALIYUN_TOKEN和ALIYUN_APPKEY是否过期。'
r = sr.stop()
def get_token(self):
from toolbox import get_conf
import json
from aliyunsdkcore.request import CommonRequest
from aliyunsdkcore.client import AcsClient
AccessKey_ID, AccessKey_secret = get_conf('ALIYUN_ACCESSKEY', 'ALIYUN_SECRET')
# 创建AcsClient实例
client = AcsClient(
AccessKey_ID,
AccessKey_secret,
"cn-shanghai"
)
# 创建request，并设置参数。
request = CommonRequest()
request.set_method('POST')
request.set_domain('nls-meta.cn-shanghai.aliyuncs.com')
request.set_version('2019-02-28')
request.set_action_name('CreateToken')
try:
response = client.do_action_with_exception(request)
print(response)
jss = json.loads(response)
if 'Token' in jss and 'Id' in jss['Token']:
token = jss['Token']['Id']
expireTime = jss['Token']['ExpireTime']
print("token = " + token)
print("expireTime = " + str(expireTime))
except Exception as e:
print(e)
return token
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