audio_text.py

import websocket
import datetime
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 test_webtts
import get_audio, recongnize
import threading
import os

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

def audio_text():

    audio_input_filepath="/home/baicaitong/trashbin_project_webapi/audioee"
    output_text="./out1.txt"
    #input_filepath默认为./audioee，output_text为翻译出来的内荣保存在out1.txt中,随后被删除
    #返回的是翻译出的文字
    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"]
                #cc=json.dumps(data, ensure_ascii=False)
                phase=''
                for x in range(len(data)):
                    phase+=data[x]['cw'][0]['w']
                #print(phase)
                tt=str(phase)
                #将识别的内容保存进文件

                with open(output_text, 'a') as file_object:
                    file_object.write(tt)


        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):
        print("### closed ###")


    # 收到websocket连接建立的处理
    def on_open(ws):

        def run(*args):
            frameSize = 8000  # 每一帧的音频大小
            intervel = 0.04  # 发送音频间隔(单位:s)
            status = STATUS_FIRST_FRAME  # 音频的状态信息，标识音频是第一帧，还是中间帧、最后一帧

            with open(wsParam.AudioFile, "rb") as fp:
                while True:
                    buf = fp.read(frameSize)
                    # 文件结束
                    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
                    time.sleep(intervel)
            ws.close()

        thread.start_new_thread(run, ())




    input_filename = "input.pcm"               # 麦克风采集的语音输入             # 输入文件的path
    in_path = audio_input_filepath + input_filename



    get_audio.get_audio(in_path)
                # 测试时候在此处正确填写相关信息即可运行
    time1 = datetime.now()
    wsParam = Ws_Param(APPID='5d668d4d', APIKey='ff5288cd3fc22ec336b567694e277450',
                                   APISecret='25d50b0ee0404f9ea83d611e32e35303',
                                   AudioFile=in_path)
    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})
    time2 = datetime.now()
    print(time2-time1)

    with open(output_text, 'r') as file_object:
        phase = file_object.readlines()
    #print(len(phase))
    if len(phase) == 1:
        if len(phase[0])>=4:
            text=phase[0][:4]
        else:
            text=phase[0]
    else:
        text='0'
    os.remove(output_text)
    return text
if __name__=='__main__':

    tt=audio_text()
    print(tt)
#audio_text()