Model can be loaded from local directory (#69)

* Model can be loaded from local directory

* applied flake8 linter

audiocraft/models/loaders.py

@@ -51,6 +51,10 @@ def _get_state_dict(
     if os.path.isfile(file_or_url_or_id):
         return torch.load(file_or_url_or_id, map_location=device)
 
+    if os.path.isdir(file_or_url_or_id):
+        file = f"{file_or_url_or_id}/{filename}"
+        return torch.load(file, map_location=device)
+
     elif file_or_url_or_id.startswith('https://'):
         return torch.hub.load_state_dict_from_url(file_or_url_or_id, map_location=device, check_hash=True)
 

audiocraft/models/musicgen.py

@@ -89,10 +89,11 @@ class MusicGen:
             return MusicGen(name, compression_model, lm)
 
         if name not in HF_MODEL_CHECKPOINTS_MAP:
-            raise ValueError(
-                f"{name} is not a valid checkpoint name. "
-                f"Choose one of {', '.join(HF_MODEL_CHECKPOINTS_MAP.keys())}"
-            )
+            if not os.path.isfile(name) and not os.path.isdir(name):
+                raise ValueError(
+                    f"{name} is not a valid checkpoint name. "
+                    f"Choose one of {', '.join(HF_MODEL_CHECKPOINTS_MAP.keys())}"
+                )
 
         cache_dir = os.environ.get('MUSICGEN_ROOT', None)
         compression_model = load_compression_model(name, device=device, cache_dir=cache_dir)