evr: Add IMFGetService stub for the mixer.

dlls/evr/mixer.c

@@ -43,6 +43,7 @@ struct video_mixer
     IMFVideoDeviceID IMFVideoDeviceID_iface;
     IMFTopologyServiceLookupClient IMFTopologyServiceLookupClient_iface;
     IMFVideoMixerControl2 IMFVideoMixerControl2_iface;
+    IMFGetService IMFGetService_iface;
     LONG refcount;
 
     struct input_stream inputs[MAX_MIXER_INPUT_STREAMS];
@@ -74,6 +75,11 @@ static struct video_mixer *impl_from_IMFVideoMixerControl2(IMFVideoMixerControl2
     return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoMixerControl2_iface);
 }
 
+static struct video_mixer *impl_from_IMFGetService(IMFGetService *iface)
+{
+    return CONTAINING_RECORD(iface, struct video_mixer, IMFGetService_iface);
+}
+
 static int video_mixer_compare_input_id(const void *a, const void *b)
 {
     const unsigned int *key = a;
@@ -119,6 +125,10 @@ static HRESULT WINAPI video_mixer_transform_QueryInterface(IMFTransform *iface,
     {
         *obj = &mixer->IMFVideoMixerControl2_iface;
     }
+    else if (IsEqualIID(riid, &IID_IMFGetService))
+    {
+        *obj = &mixer->IMFGetService_iface;
+    }
     else
     {
         WARN("Unsupported interface %s.\n", debugstr_guid(riid));
@@ -744,6 +754,39 @@ static const IMFVideoMixerControl2Vtbl video_mixer_control_vtbl =
     video_mixer_control_GetMixingPrefs,
 };
 
+static HRESULT WINAPI video_mixer_getservice_QueryInterface(IMFGetService *iface, REFIID riid, void **obj)
+{
+    struct video_mixer *mixer = impl_from_IMFGetService(iface);
+    return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
+}
+
+static ULONG WINAPI video_mixer_getservice_AddRef(IMFGetService *iface)
+{
+    struct video_mixer *mixer = impl_from_IMFGetService(iface);
+    return IMFTransform_AddRef(&mixer->IMFTransform_iface);
+}
+
+static ULONG WINAPI video_mixer_getservice_Release(IMFGetService *iface)
+{
+    struct video_mixer *mixer = impl_from_IMFGetService(iface);
+    return IMFTransform_Release(&mixer->IMFTransform_iface);
+}
+
+static HRESULT WINAPI video_mixer_getservice_GetService(IMFGetService *iface, REFGUID service, REFIID riid, void **obj)
+{
+    FIXME("%p, %s, %s, %p.\n", iface, debugstr_guid(service), debugstr_guid(riid), obj);
+
+    return E_NOTIMPL;
+}
+
+static const IMFGetServiceVtbl video_mixer_getservice_vtbl =
+{
+    video_mixer_getservice_QueryInterface,
+    video_mixer_getservice_AddRef,
+    video_mixer_getservice_Release,
+    video_mixer_getservice_GetService,
+};
+
 HRESULT WINAPI MFCreateVideoMixer(IUnknown *owner, REFIID riid_device, REFIID riid, void **obj)
 {
     TRACE("%p, %s, %s, %p.\n", owner, debugstr_guid(riid_device), debugstr_guid(riid), obj);
@@ -770,6 +813,7 @@ HRESULT evr_mixer_create(IUnknown *outer, void **out)
     object->IMFVideoDeviceID_iface.lpVtbl = &video_mixer_device_id_vtbl;
     object->IMFTopologyServiceLookupClient_iface.lpVtbl = &video_mixer_service_client_vtbl;
     object->IMFVideoMixerControl2_iface.lpVtbl = &video_mixer_control_vtbl;
+    object->IMFGetService_iface.lpVtbl = &video_mixer_getservice_vtbl;
     object->refcount = 1;
     object->input_count = 1;
     video_mixer_init_input(&object->inputs[0]);

dlls/evr/tests/evr.c

@@ -397,10 +397,8 @@ static void test_default_mixer(void)
     IUnknown_Release(unk);
 
     hr = IMFTransform_QueryInterface(transform, &IID_IMFGetService, (void **)&unk);
-todo_wine
     ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
-    if (SUCCEEDED(hr))
-        IUnknown_Release(unk);
+    IUnknown_Release(unk);
 
     hr = IMFTransform_QueryInterface(transform, &IID_IMFVideoMixerBitmap, (void **)&unk);
 todo_wine