[voice] add google voice support

voice/google/google_voice.py

@@ -0,0 +1,21 @@
+
+"""
+google voice service
+"""
+
+import subprocess
+import speech_recognition 
+from voice.voice import Voice
+
+class GoogleVoice(Voice):
+    recognizer = speech_recognition.Recognizer()
+
+    def __init__(self):
+        pass
+
+    def voiceToText(self, voice_file):
+        new_file = voice_file.replace('.mp3', '.wav')
+        subprocess.call('ffmpeg -i ' + voice_file + ' -acodec pcm_s16le -ac 1 -ar 16000 ' + new_file, shell=True)
+        with speech_recognition.AudioFile(new_file) as source:
+            audio = self.recognizer.record(source)
+        return self.recognizer.recognize_google(audio, language='zh-CN')

voice/voice.py

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+"""
+Voice service abstract class
+"""
+
+class Voice(object):
+    def voiceToText(self, voice_file):
+        """
+        Send voice to voice service and get text
+        """
+        raise NotImplementedError

voice/voice_factory.py

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+"""
+voice factory
+"""
+
+def create_voice(voice_type):
+    """
+    create a voice instance
+    :param voice_type: voice type code
+    :return: voice instance
+    """
+    if voice_type == 'xfyun':
+        from voice.xfyun.xfyun_voice import XfyunVoice
+        return XfyunVoice()
+    elif voice_type == 'google':
+        from voice.google.google_voice import GoogleVoice
+        return GoogleVoice()
+    raise RuntimeError

voice/xfyun/xfyun_voice.py

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+
+"""
+科大讯飞 voice service
+"""
+
+from voice.voice import Voice
+
+# 科大讯飞语音识别
+lfasr_host = 'http://raasr.xfyun.cn/api'
+# 请求的接口名
+api_prepare = '/prepare'
+api_upload = '/upload'
+api_merge = '/merge'
+api_get_progress = '/getProgress'
+api_get_result = '/getResult'
+# 文件分片大小10M
+file_piece_sice = 10485760
+# ——————————————————转写可配置参数————————————————
+# 参数可在官网界面（https://doc.xfyun.cn/rest_api/%E8%AF%AD%E9%9F%B3%E8%BD%AC%E5%86%99.html）查看，根据需求可自行在gene_params方法里添加修改
+# 转写类型
+lfasr_type = 0
+# 是否开启分词
+has_participle = 'false'
+has_seperate = 'true'
+# 多候选词个数
+max_alternatives = 0
+# 子用户标识
+suid = ''
+
+class XfyunVoice(Voice):
+    def __init__(self):
+        pass
+
+    def voiceToText(self, voice_file):
+        pass