mf/topoloader: Set MF_TOPONODE_TRANSFORM_OBJECTID for created transforms when CLSID is available.

dlls/mf/tests/mf.c

@@ -2045,6 +2045,9 @@ todo_wine {
                     ok(value == 1, "Unexpected value.\n");
                 }
 
+                hr = IMFTopologyNode_GetItem(mft_node, &MF_TOPONODE_TRANSFORM_OBJECTID, NULL);
+                ok(hr == S_OK, "Failed to get attribute, hr %#x.\n", hr);
+
                 hr = IUnknown_QueryInterface(node_object, &IID_IMFTransform, (void **)&transform);
                 ok(hr == S_OK, "Failed to get IMFTransform from transform node's object, hr %#x.\n", hr);
                 IUnknown_Release(node_object);
@@ -2068,6 +2071,9 @@ todo_wine {
                 ok(hr == S_OK, "Failed to get transform node type in resolved topology, hr %#x.\n", hr);
                 ok(node_type == MF_TOPOLOGY_TRANSFORM_NODE, "Unexpected node type %u.\n", node_type);
 
+                hr = IMFTopologyNode_GetItem(mft_node, &MF_TOPONODE_TRANSFORM_OBJECTID, NULL);
+                ok(hr == S_OK, "Failed to get attribute, hr %#x.\n", hr);
+
                 hr = IMFTopologyNode_GetObject(mft_node, &node_object);
                 ok(hr == S_OK, "Failed to get object of transform node, hr %#x.\n", hr);
 

dlls/mf/topology.c

@@ -1996,7 +1996,7 @@ struct transform_output_type
 {
     IMFMediaType *type;
     IMFTransform *transform;
-    const GUID *category;
+    IMFActivate *activate;
 };
 
 struct connect_context
@@ -2054,7 +2054,7 @@ static HRESULT topology_loader_enumerate_output_types(const GUID *category, IMFM
             unsigned int output_count = 0;
 
             output_type.transform = transform;
-            output_type.category = category;
+            output_type.activate = activates[i];
             while (SUCCEEDED(IMFTransform_GetOutputAvailableType(transform, 0, output_count++, &output_type.type)))
             {
                 hr = connect_func(&output_type, context);
@@ -2079,17 +2079,22 @@ static HRESULT topology_loader_create_transform(const struct transform_output_ty
         IMFTopologyNode **node)
 {
     HRESULT hr;
+    GUID guid;
 
     if (FAILED(hr = MFCreateTopologyNode(MF_TOPOLOGY_TRANSFORM_NODE, node)))
         return hr;
 
     IMFTopologyNode_SetObject(*node, (IUnknown *)output_type->transform);
-    if (IsEqualGUID(output_type->category, &MFT_CATEGORY_AUDIO_DECODER) ||
-            IsEqualGUID(output_type->category, &MFT_CATEGORY_VIDEO_DECODER))
+
+    if (SUCCEEDED(IMFActivate_GetGUID(output_type->activate, &MF_TRANSFORM_CATEGORY_Attribute, &guid)) &&
+            (IsEqualGUID(&guid, &MFT_CATEGORY_AUDIO_DECODER) || IsEqualGUID(&guid, &MFT_CATEGORY_VIDEO_DECODER)))
     {
         IMFTopologyNode_SetUINT32(*node, &MF_TOPONODE_DECODER, 1);
     }
 
+    if (SUCCEEDED(IMFActivate_GetGUID(output_type->activate, &MFT_TRANSFORM_CLSID_Attribute, &guid)))
+        IMFTopologyNode_SetGUID(*node, &MF_TOPONODE_TRANSFORM_OBJECTID, &guid);
+
     return hr;
 }