add encoder and decoder classes

modules/textual_inversion/textual_inversion.py

@@ -16,6 +16,27 @@ import json
 from modules import shared, devices, sd_hijack, processing, sd_models
 import modules.textual_inversion.dataset
 
+class EmbeddingEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, torch.Tensor):
+            return {'EMBEDDINGTENSOR':obj.cpu().detach().numpy().tolist()}
+        return json.JSONEncoder.default(self, o)
+
+class EmbeddingDecoder(json.JSONDecoder):
+    def __init__(self, *args, **kwargs):
+        json.JSONDecoder.__init__(self, object_hook=self.object_hook, *args, **kwargs)
+    def object_hook(self, d):
+        if 'EMBEDDINGTENSOR' in d:
+            return torch.from_numpy(np.array(d['EMBEDDINGTENSOR']))
+        return d
+
+def embeddingToB64(data):
+    d = json.dumps(data,cls=EmbeddingEncoder)
+    return base64.b64encode(d.encode())
+
+def EmbeddingFromB64(data):
+    d = base64.b64decode(data)
+    return json.loads(d,cls=EmbeddingDecoder)
 
 class Embedding:
     def __init__(self, vec, name, step=None):