amstream: Allow AMMSF_ADDDEFAULTRENDERER only with MSPID_PrimaryAudio.

dlls/amstream/multimedia.c

@@ -305,26 +305,21 @@ static HRESULT WINAPI multimedia_stream_AddMediaStream(IAMMultiMediaStream *ifac
 
     if (dwFlags & AMMSF_ADDDEFAULTRENDERER)
     {
-        if (IsEqualGUID(PurposeId, &MSPID_PrimaryVideo))
+        IBaseFilter *dsound_render;
+
+        if (!IsEqualGUID(PurposeId, &MSPID_PrimaryAudio))
         {
-            /* Default renderer not supported by video stream */
+            WARN("AMMSF_ADDDEFAULTRENDERER requested with id %s, returning MS_E_PURPOSEID.\n", debugstr_guid(PurposeId));
             return MS_E_PURPOSEID;
         }
-        else
-        {
-            IBaseFilter* dsoundrender_filter;
 
-            /* Create the default renderer for audio */
-            hr = CoCreateInstance(&CLSID_DSoundRender, NULL, CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (LPVOID*)&dsoundrender_filter);
-            if (SUCCEEDED(hr))
-            {
-                 hr = IGraphBuilder_AddFilter(This->pFilterGraph, dsoundrender_filter, NULL);
-                 IBaseFilter_Release(dsoundrender_filter);
-            }
-
-            /* No media stream created when the default renderer is used */
-            return hr;
+        if (SUCCEEDED(hr = CoCreateInstance(&CLSID_DSoundRender, NULL,
+                CLSCTX_INPROC_SERVER, &IID_IBaseFilter, (void **)&dsound_render)))
+        {
+            hr = IGraphBuilder_AddFilter(This->pFilterGraph, dsound_render, NULL);
+            IBaseFilter_Release(dsound_render);
         }
+        return hr;
     }
 
     if (IsEqualGUID(PurposeId, &MSPID_PrimaryVideo))

dlls/amstream/tests/amstream.c

@@ -841,6 +841,9 @@ static void test_add_stream(void)
     }
 
     hr = IAMMultiMediaStream_AddMediaStream(mmstream, NULL, &test_mspid,
+            AMMSF_ADDDEFAULTRENDERER, NULL);
+    ok(hr == MS_E_PURPOSEID, "Got hr %#x.\n", hr);
+    hr = IAMMultiMediaStream_AddMediaStream(mmstream, NULL, &test_mspid,
             AMMSF_ADDDEFAULTRENDERER, &audio_stream);
     todo_wine ok(hr == E_INVALIDARG, "Got hr %#x.\n", hr);