feat: Integrate IndexTTS2 model and update related schemas and frontend components

qwen3-tts-backend/core/model_manager.py

@@ -121,3 +121,40 @@ class ModelManager:
             }
             for name, path in self.MODEL_PATHS.items()
         }
+
+
+class IndexTTS2ModelManager:
+    _instance = None
+    _lock = asyncio.Lock()
+
+    def __init__(self):
+        self.tts = None
+
+    @classmethod
+    async def get_instance(cls):
+        if cls._instance is None:
+            async with cls._lock:
+                if cls._instance is None:
+                    cls._instance = cls()
+        return cls._instance
+
+    async def get_model(self):
+        if self.tts is None:
+            await self._load()
+        return self.tts
+
+    async def _load(self):
+        from indextts.infer_indextts2 import IndexTTS2
+        from pathlib import Path
+        model_dir = Path(settings.MODEL_BASE_PATH) / "IndexTTS2"
+        loop = asyncio.get_event_loop()
+        self.tts = await loop.run_in_executor(
+            None,
+            lambda: IndexTTS2(
+                cfg_path=str(model_dir / "config.yaml"),
+                model_dir=str(model_dir),
+                is_fp16=False,
+                use_cuda_kernel=False,
+                use_deepspeed=False,
+            )
+        )