增加阿里云语音合成模块 (#35)

* 增加阿里云语音识别

profile配置信息：

tts_engine: ali-tts

#阿里云语音
ali_yuyin:
ak_id: ''
ak_secret: ''
voice_name: 'xiaoyun' #xiaoyun为女生，xiaogang为男生

另附上讯飞语音合成的发音人配置：
将iflytek_yuyin里的vid编号替换成下文所附编号可更换发音人
建议先去配音配音阁 http://www.peiyinge.com/anchor?speakerType=1 测试后再进行更换

附文：
中文主播
65070 //小俊
65090 //彬哥
65080 //程程
65320 //小薛
65040 //小英
65010 //小洋
65110 //小光
65340 //小南
64010 //坤叔
65360 //瑶瑶
15675 //小宇
60100 //小媛
62020 //小芳
62060 //百合仙子
65310 //飞飞
62070 //韦香主
60150 //老马
65250 //大灰狼
62010 //小华
65270 //原野

特色语音合成
67230 //葛二爷
60170 //萌小新
60120 //小桃丸
67100 //颖儿

方言主播
68060 //小蓉
10003 //小梅
68030 //小坤
68010 //小强
68040 //晓倩
68120 //玉儿
68080 //小莹

英文主播
69055 //Mr.奥
69020 //凯瑟琳
69010 //John
69030 //Steve

童声主播
60130 //楠楠

* 增加阿里云语音识别

profile配置信息：

tts_engine: ali-tts

#阿里云语音
ali_yuyin:
ak_id: ''
ak_secret: ''
voice_name: 'xiaoyun' #xiaoyun为女生，xiaogang为男生

另附上讯飞语音合成的发音人配置：
将iflytek_yuyin里的vid编号替换成下文所附编号可更换发音人
建议先去配音配音阁 http://www.peiyinge.com/anchor?speakerType=1 测试后再进行更换

附文：
中文主播
65070 //小俊
65090 //彬哥
65080 //程程
65320 //小薛
65040 //小英
65010 //小洋
65110 //小光
65340 //小南
64010 //坤叔
65360 //瑶瑶
15675 //小宇
60100 //小媛
62020 //小芳
62060 //百合仙子
65310 //飞飞
62070 //韦香主
60150 //老马
65250 //大灰狼
62010 //小华
65270 //原野

特色语音合成
67230 //葛二爷
60170 //萌小新
60120 //小桃丸
67100 //颖儿

方言主播
68060 //小蓉
10003 //小梅
68030 //小坤
68010 //小强
68040 //晓倩
68120 //玉儿
68080 //小莹

英文主播
69055 //Mr.奥
69020 //凯瑟琳
69010 //John
69030 //Steve

童声主播
60130 //楠楠

* Update tts.py

* Update tts.py

* Update tts.py

* Update tts.py

* Update tts.py

client/tts.py

@@ -16,6 +16,10 @@
 import logging
 import urllib
 import requests
+import datetime
+import base64
+import hmac
+import hashlib
 from abc import ABCMeta, abstractmethod
 from uuid import getnode as get_mac
 
@@ -533,7 +537,7 @@ def __init__(self, vid='60170'):
     def get_config(cls):
         # FIXME: Replace this as soon as we have a config module
         config = {}
-        # Try to get baidu_yuyin config from config
+        # Try to get iflytek_yuyin config from config
         profile_path = dingdangpath.config('profile.yml')
         if os.path.exists(profile_path):
             with open(profile_path, 'r') as f:
@@ -580,6 +584,107 @@ def say(self, phrase):
             os.remove(tmpfile)
 
 
+class ALiBaBaTTS(AbstractMp3TTSEngine):
+    """
+    使用阿里云的语音合成技术
+    要使用本模块, 请先在 profile.xml 中启用本模块并选择合适的发音人.
+    """
+
+    SLUG = "ali-tts"
+
+    def __init__(self, ak_id, ak_secret, voice_name='xiaoyun'):
+        self._logger = logging.getLogger(__name__)
+        self.ak_id = ak_id
+        self.ak_secret = ak_secret
+        self.voice_name = voice_name
+
+    @classmethod
+    def get_config(cls):
+        # FIXME: Replace this as soon as we have a config module
+        config = {}
+        # Try to get ali_yuyin config from config
+        profile_path = dingdangpath.config('profile.yml')
+        if os.path.exists(profile_path):
+            with open(profile_path, 'r') as f:
+                profile = yaml.safe_load(f)
+                if 'ali_yuyin' in profile:
+                    if 'ak_id' in profile['ali_yuyin']:
+                        config['ak_id'] = \
+                            profile['ali_yuyin']['ak_id']
+                    if 'ak_secret' in profile['ali_yuyin']:
+                        config['ak_secret'] = \
+                            profile['ali_yuyin']['ak_secret']
+                    if 'voice_name' in profile['ali_yuyin']:
+                        config['voice_name'] = \
+                            profile['ali_yuyin']['voice_name']
+        return config
+
+    @classmethod
+    def is_available(cls):
+        return diagnose.check_network_connection()
+
+    def split_sentences(self, text):
+        punctuations = ['.', '。', ';', '；', '\n']
+        for i in punctuations:
+            text = text.replace(i, '@@@')
+        return text.split('@@@')
+
+    def get_current_date(self):
+        date = datetime.datetime.strftime(datetime.datetime.utcnow(),
+                                          "%a, %d %b %Y %H: %M: %S GMT")
+        return date
+
+    def to_md5_base64(self, strBody):
+        hash = hashlib.md5()
+        hash.update(strBody)
+        return hash.digest().encode('base64').strip()
+
+    def to_sha1_base64(self, stringToSign, secret):
+        hmacsha1 = hmac.new(secret, stringToSign, hashlib.sha1)
+        return base64.b64encode(hmacsha1.digest())
+
+    def get_speech(self, phrase):
+        options = {
+            'url': 'http://nlsapi.aliyun.com/speak?encode_type=' +
+            'mp3&voice_name=' + self.voice_name + '&volume=50',
+            'method': 'POST',
+            'body': phrase.encode('utf8'),
+        }
+        headers = {
+            'date': self.get_current_date(),
+            'content-type': 'text/plain',
+            'authorization': '',
+            'accept': 'audio/wav, application/json'
+        }
+
+        body = ''
+        if 'body' in options:
+            body = options['body']
+
+        bodymd5 = ''
+        if not body == '':
+            bodymd5 = self.to_md5_base64(body)
+
+        stringToSign = options['method'] + '\n' + headers['accept'] + '\n' + \
+            bodymd5 + '\n' + headers['content-type'] + '\n' + headers['date']
+        signature = self.to_sha1_base64(stringToSign, self.ak_secret)
+        authHeader = 'Dataplus ' + self.ak_id + ':' + signature
+        headers['authorization'] = authHeader
+        url = options['url']
+        r = requests.post(url, data=body, headers=headers, verify=False)
+        with tempfile.NamedTemporaryFile(suffix='.mp3', delete=False) as f:
+            f.write(r.content)
+            tmpfile = f.name
+            return tmpfile
+
+    def say(self, phrase):
+        self._logger.debug(u"Saying '%s' with '%s'", phrase, self.SLUG)
+        tmpfile = self.get_speech(phrase)
+        if tmpfile is not None:
+            self.play_mp3(tmpfile)
+            os.remove(tmpfile)
+
+
 def get_default_engine_slug():
     return 'osx-tts' if platform.system().lower() == 'darwin' else 'espeak-tts'