# coding=utf-8
import sys
import json
import base64
import time
#判断python版本 初始化库
IS_PY3 = sys.version_info.major == 3
if IS_PY3:
from urllib.request import urlopen
from urllib.request import Request
from urllib.error import URLError
from urllib.parse import urlencode
timer = time.perf_counter
else:
from urllib2 import urlopen
from urllib2 import Request
from urllib2 import URLError
from urllib import urlencode
if sys.platform == "win32":
timer = time.clock
else:
# On most other platforms the best timer is time.time()
timer = time.time
#百度设备API信息
API_KEY = 'kVcnfD9iW2XVZSMaLMrtLYIz'
SECRET_KEY = 'O9o1O213UgG5LFn0bDGNtoRN3VWl2du6'
# 需要识别的文件
AUDIO_FILE = './pcm/16k.pcm' # 只支持 pcm/wav/amr
# 文件格式
FORMAT = AUDIO_FILE[-3:] # 文件后缀只支持 pcm/wav/amr
#用户唯一标识，用来区分用户，计算UV值。建议填写能区分用户的机器 MAC 地址或 IMEI 码，长度为60字符以内。
CUID = '123456PYTHON'
# 采样率
RATE = 16000 # 固定值
# 免费版
DEV_PID = 1536 # 1537 表示识别普通话，使用输入法模型。1536表示识别普通话，使用搜索模型。根据文档填写PID，选择语言及识别模型
ASR_URL = 'http://vop.baidu.com/server_api'
SCOPE = 'audio_voice_assistant_get' # 有此scope表示有asr能力，没有请在网页里勾选，非常旧的应用可能没有
# 收费极速版 打开注释的话请填写自己申请的appkey appSecret ，并在网页中开通极速版
# DEV_PID = 80001
# ASR_URL = 'https://vop.baidu.com/pro_api'
# SCOPE = 'brain_enhanced_asr' # 有此scope表示有收费极速版能力，没有请在网页里开通极速版
# 忽略scope检查，非常旧的应用可能没有
# SCOPE = False
class DemoError(Exception):
pass
""" TOKEN start """
#请求URL
TOKEN_URL = 'http://openapi.baidu.com/oauth/2.0/token'
def fetch_token():
params = {'grant_type': 'client_credentials',
'client_id': API_KEY,
'client_secret': SECRET_KEY}
post_data = urlencode(params)
if (IS_PY3):
post_data = post_data.encode( 'utf-8')
req = Request(TOKEN_URL, post_data)
try:
f = urlopen(req)
result_str = f.read()
except URLError as err:
print('token http response http code : ' + str(err.code))
result_str = err.read()
if (IS_PY3):
result_str = result_str.decode()
print(result_str)
result = json.loads(result_str)
print(result)
if ('access_token' in result.keys() and 'scope' in result.keys()):
print(SCOPE)
if SCOPE and (not SCOPE in result['scope'].split(' ')): # SCOPE = False 忽略检查
raise DemoError('scope is not correct')
print('SUCCESS WITH TOKEN: %s EXPIRES IN SECONDS: %s' % (result['access_token'], result['expires_in']))
return result['access_token']
else:
raise DemoError('MAYBE API_KEY or SECRET_KEY not correct: access_token or scope not found in token response')
""" TOKEN end """
if __name__ == '__main__':
##f获取令牌开始 具体见百度语音合成tty https://blog.csdn.net/qq_25205045/article/details/90454082
token = fetch_token()
speech_data = []
#打开识别的文件到定义的语音文件数据中
with open(AUDIO_FILE, 'rb') as speech_file:
speech_data = speech_file.read()
#读取打开文件数据长度并对其进行判断处理
length = len(speech_data)
if length == 0:
raise DemoError('file %s length read 0 bytes' % AUDIO_FILE)
#对数据进行转码
speech = base64.b64encode(speech_data)
if (IS_PY3):
speech = str(speech, 'utf-8')
params = {'dev_pid': DEV_PID,
'format': FORMAT,
'rate': RATE,
'token': token,
'cuid': CUID,
'channel': 1,
'speech': speech,
'len': length
}
post_data = json.dumps(params, sort_keys=False)
# print post_data
req = Request(ASR_URL, post_data.encode('utf-8'))
req.add_header('Content-Type', 'application/json')
try:
begin = timer()
f = urlopen(req)
result_str = f.read()
print ("Request time cost %f" % (timer() - begin))
except URLError as err:
print('asr http response http code : ' + str(err.code))
result_str = err.read()
if (IS_PY3):
result_str = str(result_str, 'utf-8')
print(result_str)
with open("result.txt","w") as of:
of.write(result_str)
