流式传输

services/a2f_api/tts_service.py

@@ -1,20 +1,35 @@
 import os
+import threading
 import pyttsx3
 
 class TTSService:
+    _lock = threading.Lock()
+
     def __init__(self, lang='zh-CN'):
         self.lang = lang
-        self.engine = pyttsx3.init()
-
-        if lang == 'zh-CN':
-            voices = self.engine.getProperty('voices')
-            for voice in voices:
-                if 'chinese' in voice.name.lower() or 'zh' in voice.id.lower():
-                    self.engine.setProperty('voice', voice.id)
-                    break
 
     def text_to_audio(self, text: str, output_path: str) -> str:
+        """将文本转换为WAV音频文件（使用pyttsx3）"""
         os.makedirs(os.path.dirname(output_path), exist_ok=True)
-        self.engine.save_to_file(text, output_path)
-        self.engine.runAndWait()
-        return output_path
+
+        with self._lock:
+            engine = pyttsx3.init()
+            try:
+                # 设置中文语音
+                voices = engine.getProperty('voices')
+                for voice in voices:
+                    if 'chinese' in voice.name.lower() or 'zh' in voice.id.lower():
+                        engine.setProperty('voice', voice.id)
+                        break
+
+                # 设置语速
+                engine.setProperty('rate', 150)
+
+                # 保存为WAV
+                engine.save_to_file(text, output_path)
+                engine.runAndWait()
+
+                return output_path
+            finally:
+                engine.stop()
+                del engine