[PATCH v2 4/6] mf/topology_loader: Initialize transform output type before adding converter.

[Rémi Bernon]

From: Rémi Bernon

Otherwise the next topology_branch_connect call will fail when it will
try to lookup the upstream element media type.
---
 dlls/mf/tests/mf.c        | 4 ----
 dlls/mf/topology_loader.c | 9 +++++++++
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/dlls/mf/tests/mf.c b/dlls/mf/tests/mf.c
index 2c1e1020bee..b8859091424 100644
--- a/dlls/mf/tests/mf.c
+++ b/dlls/mf/tests/mf.c
@@ -3633,10 +3633,7 @@ todo_wine {
                 }

hr = IMFTransform_GetOutputCurrentType(transform, 0, &media_type);
-                todo_wine
                 ok(hr == S_OK, "Failed to get transform input type, hr %#lx.\n", hr);
-                if (hr == S_OK)
-                {
                 if (IsEqualGUID(&test->converter_class, &GUID_NULL))
                 {
                     hr = IMFMediaType_Compare(output_type, (IMFAttributes *)media_type, MF_ATTRIBUTES_MATCH_OUR_ITEMS, &ret);
@@ -3648,7 +3645,6 @@ todo_wine {
                     check_media_type(media_type, *test->decoded_type, -1);
                 }
                 IMFMediaType_Release(media_type);
-                }

IMFTransform_Release(transform);
             }
diff --git a/dlls/mf/topology_loader.c b/dlls/mf/topology_loader.c
index 57f9cfa9bf6..83398dbb12f 100644
--- a/dlls/mf/topology_loader.c
+++ b/dlls/mf/topology_loader.c
@@ -297,6 +297,7 @@ static HRESULT topology_branch_connect_indirect(IMFTopology *topology, MF_CONNEC
         struct topology_branch down_branch = {.up.node = node, .down = branch->down};
         struct topology_branch up_branch = {.up = branch->up, .down.node = node};
         MF_CONNECT_METHOD method = method_mask;
+        IMFMediaType *media_type;

if (FAILED(IMFActivate_ActivateObject(activates[i], &IID_IMFTransform, (void **)&transform)))
             continue;
@@ -315,6 +316,14 @@ static HRESULT topology_branch_connect_indirect(IMFTopology *topology, MF_CONNEC
         }
         IMFTransform_Release(transform);

+        if (SUCCEEDED(hr) && method != MF_CONNECT_DIRECT
+                && SUCCEEDED(IMFTransform_GetOutputAvailableType(transform, 0, 0, &media_type)))
+        {
+            if (SUCCEEDED(topology_branch_fill_media_type(up_type, media_type)))
+                IMFTransform_SetOutputType(transform, 0, media_type, 0);
+            IMFMediaType_Release(media_type);
+        }
+
         if (SUCCEEDED(hr))
             hr = topology_branch_connect(topology, method, &down_branch, !down_type);
         if (SUCCEEDED(hr))