Merge pull request #812 from zzz-heygen/zzz/fix_serializer_backward_c…

…ompat

fix: make ProtobufFrameSerializer backwards compatible

src/pipecat/serializers/protobuf.py

@@ -90,25 +90,25 @@ def deserialize(self, data: str | bytes) -> Frame | None:
             args_dict[field.name] = getattr(args, field.name)
 
         # Remove special fields if needed
-        id = getattr(args, "id")
-        name = getattr(args, "name")
-        pts = getattr(args, "pts")
-        if not id:
+        id = getattr(args, "id", None)
+        name = getattr(args, "name", None)
+        pts = getattr(args, "pts", None)
+        if not id and "id" in args_dict:
             del args_dict["id"]
-        if not name:
+        if not name and "name" in args_dict:
             del args_dict["name"]
-        if not pts:
+        if not pts and "pts" in args_dict:
             del args_dict["pts"]
 
         # Create the instance
         instance = class_name(**args_dict)
 
         # Set special fields
         if id:
-            setattr(instance, "id", getattr(args, "id"))
+            setattr(instance, "id", getattr(args, "id", None))
         if name:
-            setattr(instance, "name", getattr(args, "name"))
+            setattr(instance, "name", getattr(args, "name", None))
         if pts:
-            setattr(instance, "pts", getattr(args, "pts"))
+            setattr(instance, "pts", getattr(args, "pts", None))
 
         return instance