add realesrGAN selection

iopaint/plugins/realesrgan.py

@@ -14,6 +14,12 @@ class RealESRGANUpscaler(BasePlugin):
 
     def __init__(self, name, device, no_half=False):
         super().__init__()
+        self.model_name = name
+        self.device = device
+        self.no_half = no_half
+        self._init_model(name)
+
+    def _init_model(self, name):
         from basicsr.archs.rrdbnet_arch import RRDBNet
         from realesrgan import RealESRGANer
         from realesrgan.archs.srvgg_arch import SRVGGNetCompact
@@ -70,13 +76,19 @@ class RealESRGANUpscaler(BasePlugin):
             scale=model_info["scale"],
             model_path=model_path,
             model=model_info["model"](),
-            half=True if "cuda" in str(device) and not no_half else False,
+            half=True if "cuda" in str(self.device) and not self.no_half else False,
             tile=512,
             tile_pad=10,
             pre_pad=10,
-            device=device,
+            device=self.device,
         )
 
+    def switch_model(self, new_model_name: str):
+        if self.model_name == new_model_name:
+            return
+        self._init_model(new_model_name)
+        self.model_name = new_model_name
+
     def gen_image(self, rgb_np_img, req: RunPluginRequest) -> np.ndarray:
         bgr_np_img = cv2.cvtColor(rgb_np_img, cv2.COLOR_RGB2BGR)
         logger.info(f"RealESRGAN input shape: {bgr_np_img.shape}, scale: {req.scale}")