022-百度语音合成(官方提供key)

百度语音合成(官方提供key)

将文本转换为可以播放的音频文件。

合成的文件格式为 mp3，pcm（8k及16k），wav（16k），具体见aue参数。

# coding=utf-8
import sys
import json

import os

import time

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
    from urllib.parse import quote_plus
# else:
#     import urllib2
#     from urllib import quote_plus
#     from urllib2 import urlopen
#     from urllib2 import Request
#     from urllib2 import URLError
#     from urllib import urlencode

class DemoError(Exception):
    pass

class VoiceMerge():
    def __init__(self, apiKey='4E1BG9lTnlSeIf1NQFlrSq6h', secretKey='544ca4657ba8002e3dea3ac2f5fdd241'):
        # 本文件中的 apiKey，secretKey 是百度官网示例提供的（可用）
        self.API_KEY = apiKey
        self.SECRET_KEY = secretKey

    def voiceMerge(self, text='', outFilePath='', per=1, spd=5, pit=5, vol=5, aue=3, cuid='', scope='audio_tts_post'):
        '''
        :param text: 需要转换为语音的文本内容
        :param outFilePath: 输出文件路径
        :param per: 发音人，0-普通女声，1-普通男生，3-情感合成-度逍遥，4-情感合成-度丫丫，默认为 0.
        :param spd: 语速，取值0-15，默认为5中语速
        :param pit: 音调，取值0-15，默认为5中语调
        :param vol: 音量，取值0-9，默认为5中音量
        :param aue: 下载的文件格式, 3 - mp3(default)，4 - pcm-16k，5 - pcm-8k，6 - wav
        :param cuid: 用户唯一标识，用来区分用户，填写机器 MAC 地址或 IMEI 码，长度为60以内
        :param scope: 有此scope表示有tts能力，没有请在网页里勾选
        :return:
            注意文件名称与 aue 要相匹配
        '''
        TTS_URL = 'http://tsn.baidu.com/text2audio'
        FORMATS = {3: "mp3", 4: "pcm", 5: "pcm", 6: "wav"}
        format = FORMATS[aue]

        cuid = str(cuid) if cuid else f"{int(time.time()*1000)}"


        token = self.getToken(scope)
        tex = quote_plus(text)  # 此处 text 需要两次 urlencode
        print(tex)
        params = {'tok': token, 'tex': tex, 'per': per, 'spd': spd, 'pit': pit, 'vol': vol, 'aue': aue, 'cuid': cuid,
                  'lan': 'zh', 'ctp': 1}  # lan ctp 固定参数

        data = urlencode(params)
        print('test on Web Browser' + TTS_URL + '?' + data)

        req = Request(TTS_URL, data.encode('utf-8'))
        has_error = False
        try:
            f = urlopen(req)
            result_str = f.read()

            headers = dict((name.lower(), value) for name, value in f.headers.items())

            has_error = ('content-type' not in headers.keys() or headers['content-type'].find('audio/') < 0)
        except  URLError as err:
            print('asr http response http code : ' + str(err.code))
            result_str = err.read()
            has_error = True

        # save_file = "error.txt" if has_error else f'result_{per}_{spd}.' + format
        flt = outFilePath.split('.')
        save_file = f"{flt[0]}_error.txt" if has_error else f'{outFilePath}'
        with open(save_file, 'wb') as of:
            of.write(result_str)

        if has_error:
            if (IS_PY3):
                result_str = str(result_str, 'utf-8')
            print("tts api  error:" + result_str)

        print("result saved as :" + save_file)


    def getToken(self, scope):
        TOKEN_URL = 'http://openapi.baidu.com/oauth/2.0/token'
        print("fetch token begin")
        params = {'grant_type': 'client_credentials',
                  'client_id': self.API_KEY,
                  'client_secret': self.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, timeout=5)
            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()):
            if not scope in result['scope'].split(' '):
                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')



if __name__ == '__main__':
    text = "像是加以人工似的,一丈以内绝无旁枝,这就是白杨树！"
    rpath = os.getcwd()
    outFilePath = os.path.join(rpath, 'fdir', 'test3.mp3')
    vm = VoiceMerge()
    vm.voiceMerge(text=text, outFilePath=outFilePath)