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chatgpt-on-wechat/voice/xunfei/xunfei_asr.py
njnuko 6fed719e09 add Xunfei Voice
Signed-off-by: njnuko <njnuko@163.com>
2024-05-20 15:04:23 +08:00

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Python
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# -*- coding:utf-8 -*-
#
# Author: njnuko
# Email: njnuko@163.com
#
# 这个文档是基于官方的demo来改的固体官方demo文档请参考官网
#
# 语音听写流式 WebAPI 接口调用示例 接口文档必看https://doc.xfyun.cn/rest_api/语音听写(流式版).html
# webapi 听写服务参考帖子必看http://bbs.xfyun.cn/forum.php?mod=viewthread&tid=38947&extra=
# 语音听写流式WebAPI 服务热词使用方式登陆开放平台https://www.xfyun.cn/后,找到控制台--我的应用---语音听写(流式)---服务管理--个性化热词,
# 设置热词
# 注意:热词只能在识别的时候会增加热词的识别权重,需要注意的是增加相应词条的识别率,但并不是绝对的,具体效果以您测试为准。
# 语音听写流式WebAPI 服务方言试用方法登陆开放平台https://www.xfyun.cn/后,找到控制台--我的应用---语音听写(流式)---服务管理--识别语种列表
# 可添加语种或方言,添加后会显示该方言的参数值
# 错误码链接https://www.xfyun.cn/document/error-code code返回错误码时必看
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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 os
import wave
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
#############
#whole_dict 是用来存储返回值的由于带语音修正所以用dict来存储有更新的化pop之前的值最后再合并
global whole_dict
#这个文档是官方文档改的,这个参数是用来做函数调用时用的
global wsParam
##############
class Ws_Param(object):
# 初始化
def __init__(self, APPID, APIKey, APISecret,BusinessArgs, AudioFile):
self.APPID = APPID
self.APIKey = APIKey
self.APISecret = APISecret
self.AudioFile = AudioFile
self.BusinessArgs = BusinessArgs
# 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):
global whole_dict
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:
temp1 = json.loads(message)["data"]["result"]
data = json.loads(message)["data"]["result"]["ws"]
sn = temp1["sn"]
if "rg" in temp1.keys():
rep = temp1["rg"]
rep_start = rep[0]
rep_end = rep[1]
for sn in range(rep_start,rep_end+1):
print("before pop",whole_dict)
print("sn",sn)
whole_dict.pop(sn,None)
print("after pop",whole_dict)
results = ""
for i in data:
for w in i["cw"]:
results += w["w"]
whole_dict[sn]=results
print("after add",whole_dict)
else:
results = ""
for i in data:
for w in i["cw"]:
results += w["w"]
whole_dict[sn]=results
print("sid:%s call success!,data is:%s" % (sid, json.dumps(data, ensure_ascii=False)))
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):
global wsParam
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 wave.open(wsParam.AudioFile, "rb") as fp:
while True:
buf = fp.readframes(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, ())
#提供给xunfei_voice调用的函数
def xunfei_asr(APPID,APISecret,APIKey,BusinessArgsASR,AudioFile):
global whole_dict
global wsParam
whole_dict = {}
wsParam1 = Ws_Param(APPID=APPID, APISecret=APISecret,
APIKey=APIKey,BusinessArgs=BusinessArgsASR,
AudioFile=AudioFile)
#wsParam是global变量给上面on_open函数调用使用的
wsParam = wsParam1
websocket.enableTrace(True)
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})
#把字典的值合并起来做最后识别的输出
whole_words = ""
for i in sorted(whole_dict.keys()):
whole_words += whole_dict[i]
return whole_words