mfplat: Implement GetMajorType() for stream descriptor.

dlls/mfplat/mediatype.c

@@ -931,9 +931,19 @@ static HRESULT WINAPI mediatype_handler_GetCurrentMediaType(IMFMediaTypeHandler
 
 static HRESULT WINAPI mediatype_handler_GetMajorType(IMFMediaTypeHandler *iface, GUID *type)
 {
-    FIXME("%p, %p.\n", iface, type);
+    struct stream_desc *stream_desc = impl_from_IMFMediaTypeHandler(iface);
+    HRESULT hr;
 
-    return E_NOTIMPL;
+    TRACE("%p, %p.\n", iface, type);
+
+    EnterCriticalSection(&stream_desc->cs);
+    if (stream_desc->current_type)
+        hr = IMFMediaType_GetGUID(stream_desc->current_type, &MF_MT_MAJOR_TYPE, type);
+    else
+        hr = MF_E_ATTRIBUTENOTFOUND;
+    LeaveCriticalSection(&stream_desc->cs);
+
+    return hr;
 }
 
 static const IMFMediaTypeHandlerVtbl mediatypehandlervtbl =

dlls/mfplat/tests/mfplat.c

@@ -2387,7 +2387,6 @@ static void test_stream_descriptor(void)
     ok(hr == MF_E_NOT_INITIALIZED, "Unexpected hr %#x.\n", hr);
 
     hr = IMFMediaTypeHandler_GetMajorType(type_handler, &major_type);
-todo_wine
     ok(hr == MF_E_ATTRIBUTENOTFOUND, "Unexpected hr %#x.\n", hr);
 
     for (i = 0; i < ARRAY_SIZE(media_types); ++i)
@@ -2409,6 +2408,16 @@ todo_wine
     hr = IMFMediaTypeHandler_SetCurrentMediaType(type_handler, media_type);
     ok(hr == S_OK, "Failed to set current type, hr %#x.\n", hr);
 
+    hr = IMFMediaTypeHandler_GetMajorType(type_handler, &major_type);
+    ok(hr == MF_E_ATTRIBUTENOTFOUND, "Unexpected hr %#x.\n", hr);
+
+    hr = IMFMediaType_SetGUID(media_type, &MF_MT_MAJOR_TYPE, &MFMediaType_Audio);
+    ok(hr == S_OK, "Failed to set major type, hr %#x.\n", hr);
+
+    hr = IMFMediaTypeHandler_GetMajorType(type_handler, &major_type);
+    ok(hr == S_OK, "Failed to get major type, hr %#x.\n", hr);
+    ok(IsEqualGUID(&major_type, &MFMediaType_Audio), "Unexpected major type.\n");
+
     hr = IMFMediaTypeHandler_GetMediaTypeCount(type_handler, &count);
     ok(hr == S_OK, "Failed to get type count, hr %#x.\n", hr);
     ok(count == ARRAY_SIZE(media_types), "Unexpected type count.\n");