添加对gemini原生格式TTS的支持

app/service/tts/native/tts_models.py

@@ -0,0 +1,36 @@
+"""
+原生Gemini TTS扩展数据模型
+继承自原始模型，添加原生Gemini TTS相关字段，保持向后兼容
+"""
+
+from typing import Any, Dict, List, Optional
+from pydantic import BaseModel
+
+from app.domain.gemini_models import GenerationConfig as BaseGenerationConfig
+
+
+class TTSGenerationConfig(BaseGenerationConfig):
+    """
+    支持TTS的生成配置类
+    继承自原始的GenerationConfig，添加TTS相关字段
+    """
+    # TTS 相关配置
+    responseModalities: Optional[List[str]] = None
+    speechConfig: Optional[Dict[str, Any]] = None
+
+
+class MultiSpeakerVoiceConfig(BaseModel):
+    """多人语音配置"""
+    speakerVoiceConfigs: List[Dict[str, Any]]
+
+
+class SpeechConfig(BaseModel):
+    """语音配置"""
+    multiSpeakerVoiceConfig: Optional[MultiSpeakerVoiceConfig] = None
+    voiceConfig: Optional[Dict[str, Any]] = None
+
+
+class TTSRequest(BaseModel):
+    """TTS请求模型"""
+    contents: List[Dict[str, Any]]
+    generationConfig: TTSGenerationConfig