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| import time, logging, 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): | |
| logging.error("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 | |