yuyin/0604/realtime_transcriber.py

import websocket
import hashlib
import base64
import hmac
import json
from urllib.parse import urlencode
import time
import ssl
from wsgiref.handlers import format_date_time
from datetime import datetime
from time import mktime
import _thread as thread
import pyaudio

class RealtimeTranscriber:
    pass

STATUS_FIRST_FRAME = 0  # 第一帧的标识
STATUS_CONTINUE_FRAME = 1  # 中间帧标识
STATUS_LAST_FRAME = 2  # 最后一帧的标识


class Ws_Param(object):
    # 初始化
    def __init__(self, APPID, APIKey, APISecret, AudioFile):
        self.APPID = APPID
        self.APIKey = APIKey
        self.APISecret = APISecret
        self.AudioFile = AudioFile

        # 公共参数(common)
        self.CommonArgs = {"app_id": self.APPID}
        # 业务参数(business)，更多个性化参数可在官网查看
        self.BusinessArgs = {"domain": "iat", "language": "zh_cn", "accent": "mandarin", "vinfo":1,"vad_eos":10000}

    # 生成url
    def create_url(self):
        url = 'wss://ws-api.xfyun.cn/v2/iat'
        # 生成RFC1123格式的时间戳
        now = datetime.now()
        date = format_date_time(mktime(now.timetuple()))

        # 拼接字符串
        signature_origin = "host: " + "ws-api.xfyun.cn" + "\n"
        signature_origin += "date: " + date + "\n"
        signature_origin += "GET " + "/v2/iat " + "HTTP/1.1"
        # 进行hmac-sha256进行加密
        signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'),
                                 digestmod=hashlib.sha256).digest()
        signature_sha = base64.b64encode(signature_sha).decode(encoding='utf-8')

        authorization_origin = "api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"" % (
            self.APIKey, "hmac-sha256", "host date request-line", signature_sha)
        authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode(encoding='utf-8')
        # 将请求的鉴权参数组合为字典
        v = {
            "authorization": authorization,
            "date": date,
            "host": "ws-api.xfyun.cn"
        }
        # 拼接鉴权参数，生成url
        url = url + '?' + urlencode(v)
        # print("date: ",date)
        # print("v: ",v)
        # 此处打印出建立连接时候的url,参考本demo的时候可取消上方打印的注释，比对相同参数时生成的url与自己代码生成的url是否一致
        # print('websocket url :', url)
        return url


# 收到websocket消息的处理
def on_message(ws, message):
    try:
        code = json.loads(message)["code"]
        sid = json.loads(message)["sid"]
        if code != 0:
            errMsg = json.loads(message)["message"]
            print("sid:%s call error:%s code is:%s" % (sid, errMsg, code))

        else:
            data = json.loads(message)["data"]["result"]["ws"]
            # print(json.loads(message))
            result = ""
            for i in data:
                for w in i["cw"]:
                    result += w["w"]
            if result == "。" or result == ".。" or result == ' .。' or result == ' 。':
                pass
            else:
                t.insert(END,result)
                print("翻译结果：" % (result))
    except Exception as e:
        print("receive msg,but parse exception:", e)



# 收到websocket错误的处理
def on_error(ws, error):
    print("### error:", error)


# 收到websocket关闭的处理
def on_close(ws,a,b):
    print("### closed ###")


# 收到websocket连接建立的处理
def on_open(ws):
    def run(*args):
        status = STATUS_FIRST_FRAME  # 每一帧的音频大小
        CHUNK = 520  # 发送音频间隔(单位:s)
        FORMAT=pyaudio.paInt16
        CHANNELS=1
        RATE=16000
        p=pyaudio.PyAudio()
        stream=p.open(format=FORMAT,
                      channels=CHANNELS,
                      rate=RATE,
                      input=True,
                      frames_per_buffer=CHUNK)
          # 音频的状态信息，标识音频是第一帧，还是中间帧、最后一帧
        print("-------Start Recording--------")

        for i in range(0, int(RATE / CHUNK * 60)):
            buf = stream.read(CHUNK)
            if not buf:
                status = STATUS_LAST_FRAME
            # 第一帧处理
            # 发送第一帧音频，带business 参数
            # appid 必须带上，只需第一帧发送
            if status == STATUS_FIRST_FRAME:

                d = {"common": wsParam.CommonArgs,
                     "business": wsParam.BusinessArgs,
                     "data": {"status": 0, "format": "audio/L16;rate=16000",
                              "audio": str(base64.b64encode(buf), 'utf-8'),
                              "encoding": "raw"}}
                d = json.dumps(d)
                ws.send(d)
                status = STATUS_CONTINUE_FRAME
            # 中间帧处理
            elif status == STATUS_CONTINUE_FRAME:
                d = {"data": {"status": 1, "format": "audio/L16;rate=16000",
                              "audio": str(base64.b64encode(buf), 'utf-8'),
                              "encoding": "raw"}}
                ws.send(json.dumps(d))
            # 最后一帧处理
            elif status == STATUS_LAST_FRAME:
                d = {"data": {"status": 2, "format": "audio/L16;rate=16000",
                              "audio": str(base64.b64encode(buf), 'utf-8'),
                              "encoding": "raw"}}
                ws.send(json.dumps(d))
                time.sleep(1)
                break
                # 模拟音频采样间隔
        stream.stop_stream()
        stream.close()
        p.terminate()
        ws.close()
    thread.start_new_thread(run, ())


def run():
    global wsParam
    # 测试时候在此处正确填写相关信息即可运行
    wsParam = Ws_Param(APPID='c68c13ed', APISecret='NzkzNGE1OTNhMjdmODg2ZDdhYTJjNzc1',
                       APIKey='3312b6aeb828b7b0a693f896a9ee3b2b',
                       AudioFile=r'')
    websocket.enableTrace(False)
    wsUrl = wsParam.create_url()
    ws = websocket.WebSocketApp(wsUrl, on_message=on_message, on_error=on_error, on_close=on_close)
    ws.on_open = on_open
    ws.run_forever(sslopt={"cert_reqs": ssl.CERT_NONE})



from tkinter import *
import  threading
import tkinter
def thread_it(func,*args):
    t=threading.Thread(target=func,args=args)
    t.daemon = True
    t.start()
root =Tk()
t=Text(root)
t.pack()

tkinter.Button(root,text='识别',command=lambda :thread_it(run,)).pack()
root.mainloop()