FishTTSService: deprecate model, add reference_id

CHANGELOG.md

@@ -62,7 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `session_token` parameter to `AWSNovaSonicLLMService`.
 
 - Added Gemini Multimodal Live File API for uploading, fetching, listing, and
-deleting files. See `26f-gemini-multimodal-live-files-api.py` for example usage.
+  deleting files. See `26f-gemini-multimodal-live-files-api.py` for example usage.
 
 ### Changed
 
@@ -83,6 +83,12 @@ deleting files. See `26f-gemini-multimodal-live-files-api.py` for example usage.
 
 - Fixed a `AWSNovaSonicLLMService` issue introduced in 0.0.72.
 
+### Deprecated
+
+- In `FishTTSService`, deprecated `model` and replaced with `reference_id`.
+  This change is to better align with Fish Audio's variable naming and to
+  reduce confusion about what functionality the variable controls.
+
 ## [0.0.73] - 2025-06-26
 
 ### Fixed

src/pipecat/services/fish/tts.py

@@ -71,7 +71,8 @@ class FishAudioTTSService(InterruptibleTTSService):
         self,
         *,
         api_key: str,
-        model: str,  # This is the reference_id
+        reference_id: Optional[str] = None,  # This is the voice ID
+        model: Optional[str] = None,  # Deprecated
         output_format: FishAudioOutputFormat = "pcm",
         sample_rate: Optional[int] = None,
         params: Optional[InputParams] = None,
@@ -81,7 +82,13 @@ class FishAudioTTSService(InterruptibleTTSService):
 
         Args:
             api_key: Fish Audio API key for authentication.
-            model: Reference ID of the voice model to use for synthesis.
+            reference_id: Reference ID of the voice model to use for synthesis.
+            model: Deprecated. Reference ID of the voice model to use for synthesis.
+
+              .. deprecated:: 0.0.74
+                The `model` parameter is deprecated and will be removed in version 0.1.0.
+                Use `reference_id` instead to specify the voice model.
+
             output_format: Audio output format. Defaults to "pcm".
             sample_rate: Audio sample rate. If None, uses default.
             params: Additional input parameters for voice customization.
@@ -96,6 +103,26 @@ class FishAudioTTSService(InterruptibleTTSService):
 
         params = params or FishAudioTTSService.InputParams()
 
+        # Validation for model and reference_id parameters
+        if model and reference_id:
+            raise ValueError(
+                "Cannot specify both 'model' and 'reference_id'. Use 'reference_id' only."
+            )
+
+        if model is None and reference_id is None:
+            raise ValueError("Must specify 'reference_id' (or deprecated 'model') parameter.")
+
+        if model:
+            import warnings
+
+            warnings.warn(
+                "Parameter 'model' is deprecated and will be removed in a future version. "
+                "Use 'reference_id' instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+            reference_id = model
+
         self._api_key = api_key
         self._base_url = "wss://api.fish.audio/v1/tts/live"
         self._websocket = None
@@ -111,11 +138,9 @@ class FishAudioTTSService(InterruptibleTTSService):
                 "speed": params.prosody_speed,
                 "volume": params.prosody_volume,
             },
-            "reference_id": model,
+            "reference_id": reference_id,
         }
 
-        self.set_model_name(model)
-
     def can_generate_metrics(self) -> bool:
         """Check if this service can generate processing metrics.
 
@@ -124,16 +149,6 @@ class FishAudioTTSService(InterruptibleTTSService):
         """
         return True
 
-    async def set_model(self, model: str):
-        """Set the TTS model (reference ID).
-
-        Args:
-            model: The reference ID of the voice model to use.
-        """
-        self._settings["reference_id"] = model
-        await super().set_model(model)
-        logger.info(f"Switching TTS model to: [{model}]")
-
     async def start(self, frame: StartFrame):
         """Start the Fish Audio TTS service.