添加对gemini原生格式TTS的支持

app/service/tts/native/tts_response_handler.py

@@ -0,0 +1,53 @@
+"""
+原生Gemini TTS响应处理器扩展
+继承自原始响应处理器，添加原生Gemini TTS支持，保持向后兼容
+"""
+
+from typing import Any, Dict, Optional
+from app.handler.response_handler import GeminiResponseHandler
+from app.log.logger import get_gemini_logger
+
+logger = get_gemini_logger()
+
+
+class TTSResponseHandler(GeminiResponseHandler):
+    """
+    支持TTS的响应处理器
+    继承自原始的GeminiResponseHandler，添加TTS响应处理
+    """
+
+    def handle_response(
+        self, response: Dict[str, Any], model: str, stream: bool = False, usage_metadata: Optional[Dict[str, Any]] = None
+    ) -> Dict[str, Any]:
+        """
+        处理响应，支持TTS音频数据
+        """
+        # 检查是否是TTS响应（包含音频数据）
+        if self._is_tts_response(response):
+            logger.info("Detected TTS response with audio data, returning original response")
+            return response
+        
+        # 对于非TTS响应，使用父类的处理方法
+        return super().handle_response(response, model, stream, usage_metadata)
+
+    def _is_tts_response(self, response: Dict[str, Any]) -> bool:
+        """
+        检查是否是TTS响应
+        """
+        try:
+            if (response.get("candidates") and
+                len(response["candidates"]) > 0 and
+                response["candidates"][0].get("content") and
+                response["candidates"][0]["content"].get("parts") and
+                len(response["candidates"][0]["content"]["parts"]) > 0):
+                
+                parts = response["candidates"][0]["content"]["parts"]
+                for part in parts:
+                    if "inlineData" in part:
+                        mime_type = part["inlineData"].get("mimeType", "")
+                        if mime_type.startswith("audio/"):
+                            return True
+            return False
+        except Exception as e:
+            logger.warning(f"Error checking TTS response: {e}")
+            return False