quartz: Return an error code if a filter reports an incorrect state.

dlls/quartz/filtergraph.c

@@ -4961,6 +4961,15 @@ static HRESULT WINAPI MediaFilter_GetState(IMediaFilter *iface, DWORD timeout, F
                 hr = VFW_S_STATE_INTERMEDIATE;
             else if (filter_hr != S_OK && filter_hr != VFW_S_STATE_INTERMEDIATE)
                 hr = filter_hr;
+
+            if (hr == S_OK && filter_state == State_Paused && graph->state != State_Paused)
+            {
+                async_filter = filter->filter;
+                hr = VFW_S_STATE_INTERMEDIATE;
+            }
+            else if (filter_state != graph->state && filter_state != State_Paused)
+                hr = E_FAIL;
+
             if (filter_state != graph->state)
                 ERR("Filter %p reported incorrect state %u.\n", filter->filter, filter_state);
         }

dlls/quartz/tests/filtergraph.c

@@ -3254,6 +3254,21 @@ static void test_filter_state(void)
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     check_filter_state(graph, State_Paused);
 
+    sink.state = State_Stopped;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == E_FAIL, "Got hr %#x.\n", hr);
+    ok(state == State_Paused, "Got state %u.\n", state);
+
+    sink.state = State_Running;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == E_FAIL, "Got hr %#x.\n", hr);
+    ok(state == State_Paused, "Got state %u.\n", state);
+
+    sink.state = State_Paused;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(state == State_Paused, "Got state %u.\n", state);
+
     hr = IMediaControl_Stop(control);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     check_filter_state(graph, State_Stopped);
@@ -3262,10 +3277,40 @@ static void test_filter_state(void)
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     check_filter_state(graph, State_Running);
 
+    sink.state = State_Stopped;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == E_FAIL, "Got hr %#x.\n", hr);
+    ok(state == State_Running, "Got state %u.\n", state);
+
+    sink.state = State_Paused;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == VFW_S_STATE_INTERMEDIATE, "Got hr %#x.\n", hr);
+    ok(state == State_Running, "Got state %u.\n", state);
+
+    sink.state = State_Running;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(state == State_Running, "Got state %u.\n", state);
+
     hr = IMediaControl_Stop(control);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     check_filter_state(graph, State_Stopped);
 
+    sink.state = State_Running;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == E_FAIL, "Got hr %#x.\n", hr);
+    ok(state == State_Stopped, "Got state %u.\n", state);
+
+    sink.state = State_Paused;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == VFW_S_STATE_INTERMEDIATE, "Got hr %#x.\n", hr);
+    ok(state == State_Stopped, "Got state %u.\n", state);
+
+    sink.state = State_Stopped;
+    hr = IMediaControl_GetState(control, 0, &state);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(state == State_Stopped, "Got state %u.\n", state);
+
     hr = IMediaControl_Pause(control);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     check_filter_state(graph, State_Paused);