Add safetensors support to LDSR

extensions-builtin/LDSR/ldsr_model_arch.py

@@ -1,3 +1,4 @@
+import os
 import gc
 import time
 import warnings
@@ -8,6 +9,7 @@ import torchvision
 from PIL import Image
 from einops import rearrange, repeat
 from omegaconf import OmegaConf
+import safetensors.torch
 
 from ldm.models.diffusion.ddim import DDIMSampler
 from ldm.util import instantiate_from_config, ismap
@@ -28,8 +30,12 @@ class LDSR:
             model: torch.nn.Module = cached_ldsr_model
         else:
             print(f"Loading model from {self.modelPath}")
-            pl_sd = torch.load(self.modelPath, map_location="cpu")
-            sd = pl_sd["state_dict"]
+            _, extension = os.path.splitext(self.modelPath)
+            if extension.lower() == ".safetensors":
+                pl_sd = safetensors.torch.load_file(self.modelPath, device="cpu")
+            else:
+                pl_sd = torch.load(self.modelPath, map_location="cpu")
+            sd = pl_sd["state_dict"] if "state_dict" in pl_sd else pl_sd
             config = OmegaConf.load(self.yamlPath)
             config.model.target = "ldm.models.diffusion.ddpm.LatentDiffusionV1"
             model: torch.nn.Module = instantiate_from_config(config.model)