Update tts_interface.py

tts_interface.py

@@ -19,26 +19,28 @@ def log(message: str):
 class TTSInterface(ABC):
     """Abstract base class for TTS providers"""
     
+    def __init__(self):
+        self.preprocessing_flags: Set[str] = set()
+        self.supports_ssml: bool = False
+        
     @abstractmethod
     async def synthesize(self, text: str, voice_id: Optional[str] = None, **kwargs) -> bytes:
-        """
-        Convert text to speech and return audio bytes
-        
-        Args:
-            text: Text to convert to speech
-            voice_id: Optional voice ID specific to the provider
-            **kwargs: Additional provider-specific parameters
-            
-        Returns:
-            Audio data as bytes (MP3 or WAV format)
-        """
+        """Convert text to speech and return audio bytes"""
         pass
     
     @abstractmethod
     def get_supported_voices(self) -> Dict[str, str]:
         """Get list of supported voices"""
         pass
-
+    
+    @abstractmethod
+    def get_preprocessing_flags(self) -> Set[str]:
+        """Get preprocessing flags for this provider"""
+        pass
+    
+    def supports_ssml(self) -> bool:
+        """Check if provider supports SSML"""
+        return self.supports_ssml
 
 class ElevenLabsTTS(TTSInterface):
     """ElevenLabs TTS implementation"""