|
| 1 | +import modem |
| 2 | +import ujson as json |
| 3 | +from usr import uwebsocket as ws |
| 4 | +from usr import uuid |
| 5 | +from usr.logging import getLogger |
| 6 | +from usr.message import * |
| 7 | + |
| 8 | + |
| 9 | +logger = getLogger(__name__) |
| 10 | + |
| 11 | + |
| 12 | + |
| 13 | +class ASRConfig(object): |
| 14 | + ASR_APP_ID = 'xx' |
| 15 | + ASR_AUTH_TOKEN = 'xxx' |
| 16 | + ASR_HOST = 'wss://openspeech.bytedance.com/api/v2/asr' |
| 17 | + ASR_CLUSTER = 'xx' |
| 18 | + |
| 19 | + |
| 20 | +class ASRConnectError(Exception): |
| 21 | + pass |
| 22 | + |
| 23 | + |
| 24 | +class ASRQueryError(Exception): |
| 25 | + pass |
| 26 | + |
| 27 | + |
| 28 | +class ASRWebSocket(object): |
| 29 | + |
| 30 | + def __init__(self, host=ASRConfig.ASR_HOST, debug=False): |
| 31 | + # self.ASR_APP_ID = ASR_APP_ID |
| 32 | + # self.ASR_AUTH_TOKEN = ASR_AUTH_TOKEN |
| 33 | + # self.ASR_HOST = ASR_HOST |
| 34 | + # self.ASR_CLUSTER = ASR_CLUSTER |
| 35 | + self.debug = debug |
| 36 | + self.host = host |
| 37 | + |
| 38 | + def __enter__(self): |
| 39 | + self.open() |
| 40 | + return self |
| 41 | + |
| 42 | + def __exit__(self, *args, **kwargs): |
| 43 | + return self.close() |
| 44 | + |
| 45 | + @property |
| 46 | + def client(self): |
| 47 | + __client__ = getattr(self, "__client__", None) |
| 48 | + if __client__ is not None: |
| 49 | + return __client__ |
| 50 | + |
| 51 | + try: |
| 52 | + __client__ = ws.Client.connect( |
| 53 | + self.host, |
| 54 | + headers={"Authorization": "Bearer; {}".format(ASRConfig.ASR_AUTH_TOKEN)}, |
| 55 | + debug=self.debug |
| 56 | + ) |
| 57 | + except Exception as e: |
| 58 | + raise ASRConnectError("ASR websocket connect failed, pls checkout your network! Exception details: {}, {}".format(type(e).__name__, str(e))) |
| 59 | + else: |
| 60 | + setattr(self, "__client__", __client__) |
| 61 | + return __client__ |
| 62 | + |
| 63 | + def send(self, data): |
| 64 | + """send data to server""" |
| 65 | + return self.client.send(data) |
| 66 | + |
| 67 | + def recv(self): |
| 68 | + """receive data from server, return None or "" means disconnection""" |
| 69 | + return self.client.recv() |
| 70 | + |
| 71 | + def open(self): |
| 72 | + return self.client |
| 73 | + |
| 74 | + def close(self): |
| 75 | + """close websocket""" |
| 76 | + self.client.close() |
| 77 | + del self.__client__ |
| 78 | + |
| 79 | + def full_client_request(self): |
| 80 | + """发送 full client request""" |
| 81 | + payload = json.dumps( |
| 82 | + { |
| 83 | + "app": { |
| 84 | + "appid": ASRConfig.ASR_APP_ID, |
| 85 | + "token": ASRConfig.ASR_AUTH_TOKEN, |
| 86 | + "cluster": ASRConfig.ASR_CLUSTER |
| 87 | + }, |
| 88 | + "user": { |
| 89 | + "uid": modem.getDevImei() |
| 90 | + }, |
| 91 | + "audio": { |
| 92 | + "format": "mp3", |
| 93 | + "rate": 8000, |
| 94 | + "bits": 16, |
| 95 | + "channel": 1, |
| 96 | + "language": "zh-CN" |
| 97 | + }, |
| 98 | + "request": { |
| 99 | + "reqid": str(uuid.uuid4()), |
| 100 | + # "workflow": "audio_in,resample,partition,vad,fe,decode", |
| 101 | + "sequence": 1, |
| 102 | + "nbest": 1, |
| 103 | + "show_utterances": False |
| 104 | + } |
| 105 | + } |
| 106 | + ) |
| 107 | + |
| 108 | + full_client_request_msg = Message( |
| 109 | + proto_version=ProtoVersion.V1, |
| 110 | + header_size=1, |
| 111 | + message_type=MessageType.FULL_CLIENT_REQUEST, |
| 112 | + message_type_specific_flags=MessageTypeSpecificFlags.NONE, |
| 113 | + message_serialization_method=MessageSerializationMethod.JSON, |
| 114 | + message_compression=MessageCompression.NONE, |
| 115 | + payload=len(payload).to_bytes(4, "big") + payload |
| 116 | + ) |
| 117 | + |
| 118 | + # logger.debug("============ full_client_request_msg =============:\n{}".format(full_client_request_msg)) |
| 119 | + # logger.debug("full_client_request_msg hex string: ", full_client_request_msg.to_hex()) |
| 120 | + # logger.debug("payload: ", json.loads(full_client_request_msg.payload[4:])) |
| 121 | + |
| 122 | + try: |
| 123 | + self.send(full_client_request_msg.to_bytes()) |
| 124 | + except Exception as e: |
| 125 | + raise ASRQueryError("send error: {}, {}".format(type(e).__name__, str(e))) |
| 126 | + |
| 127 | + try: |
| 128 | + resp_data = self.recv() |
| 129 | + except Exception as e: |
| 130 | + raise ASRQueryError("recv error: {}, {}".format(type(e).__name__, str(e))) |
| 131 | + else: |
| 132 | + resp = MessageWrapper(Message.from_bytes(resp_data.encode())) |
| 133 | + if resp and resp.message_type == MessageType.ERROR_RESPONSE: |
| 134 | + logger.error("err resp: {}".format(resp.payload)) |
| 135 | + return None |
| 136 | + # logger.debug("resp: {}".format(resp.payload)) |
| 137 | + return resp |
| 138 | + |
| 139 | + def audio_only_request(self, payload, is_last=False): |
| 140 | + """发送 audio only request""" |
| 141 | + audio_only_request_msg = Message( |
| 142 | + proto_version=ProtoVersion.V1, |
| 143 | + header_size=1, |
| 144 | + message_type=MessageType.AUDIO_ONLY_REQUEST, |
| 145 | + message_type_specific_flags=MessageTypeSpecificFlags.AUDIO_ONLY_REQUEST_LAST_PACKAGE if is_last else MessageTypeSpecificFlags.NONE, |
| 146 | + message_serialization_method=MessageSerializationMethod.NONE, |
| 147 | + message_compression=MessageCompression.NONE, |
| 148 | + payload=len(payload).to_bytes(4, "big") + payload |
| 149 | + ) |
| 150 | + # logger.debug("============ audio_only_request_msg =============:\n{}".format(audio_only_request_msg)) |
| 151 | + # logger.debug("audio_only_request hex string: ", audio_only_request_msg.to_hex()) |
| 152 | + # logger.debug("payload: ", audio_only_request_msg.payload[4:]) |
| 153 | + |
| 154 | + try: |
| 155 | + self.send(audio_only_request_msg.to_bytes()) |
| 156 | + except Exception as e: |
| 157 | + raise ASRQueryError("audio_only_request error: {}, {}".format(type(e).__name__, str(e))) |
| 158 | + |
| 159 | + try: |
| 160 | + resp_data = self.recv() |
| 161 | + except Exception as e: |
| 162 | + raise ASRQueryError("audio_only_request recv error: {}, {}".format(type(e).__name__, str(e))) |
| 163 | + else: |
| 164 | + resp = MessageWrapper(Message.from_bytes(resp_data.encode())) |
| 165 | + if resp and resp.message_type == MessageType.ERROR_RESPONSE: |
| 166 | + raise ASRQueryError("audio_only_request err resp: {}".format(resp.payload)) |
| 167 | + # logger.debug("audio_only_request resp: {}".format(resp.payload)) |
| 168 | + return resp |
| 169 | + |
| 170 | + def query_asr(self, input_file_path="/usr/input.mp3", read_buffer_size=8192): |
| 171 | + |
| 172 | + resp = self.full_client_request() |
| 173 | + if resp is None: |
| 174 | + raise ASRQueryError("query_asr error resp.") |
| 175 | + |
| 176 | + with open(input_file_path, "rb") as f: |
| 177 | + total_size = f.seek(0, 2) |
| 178 | + f.seek(0, 0) |
| 179 | + |
| 180 | + chunk_nums = total_size // read_buffer_size |
| 181 | + if total_size % read_buffer_size != 0: |
| 182 | + chunk_nums += 1 |
| 183 | + |
| 184 | + logger.debug("input file chunk nums: {}".format(chunk_nums)) |
| 185 | + for _ in range(chunk_nums - 1): |
| 186 | + logger.debug("send {} chunk".format(_ + 1)) |
| 187 | + chunk = f.read(read_buffer_size) |
| 188 | + resp = self.audio_only_request(chunk) |
| 189 | + if resp is None: |
| 190 | + break |
| 191 | + else: |
| 192 | + logger.debug("send last chunk") |
| 193 | + chunk = f.read(read_buffer_size) |
| 194 | + resp = self.audio_only_request(chunk, is_last=True) |
| 195 | + if resp and resp.payload["code"] == 1000: |
| 196 | + return resp.payload["result"][0]["text"] |
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