mfreadwrite: Duplicate media type returned with GetNativeMediaType().

dlls/mfreadwrite/main.c

@@ -463,6 +463,7 @@ static HRESULT WINAPI src_reader_GetNativeMediaType(IMFSourceReader *iface, DWOR
     struct source_reader *reader = impl_from_IMFSourceReader(iface);
     IMFMediaTypeHandler *handler;
     IMFStreamDescriptor *sd;
+    IMFMediaType *src_type;
     BOOL selected;
     HRESULT hr;
 
@@ -489,11 +490,16 @@ static HRESULT WINAPI src_reader_GetNativeMediaType(IMFSourceReader *iface, DWOR
         return hr;
 
     if (type_index == MF_SOURCE_READER_CURRENT_TYPE_INDEX)
-        hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, type);
+        hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, &src_type);
     else
-        hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, type_index, type);
+        hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, type_index, &src_type);
     IMFMediaTypeHandler_Release(handler);
 
+    if (SUCCEEDED(hr = MFCreateMediaType(type)))
+        hr = IMFMediaType_CopyAllItems(src_type, (IMFAttributes *)*type);
+
+    IMFMediaType_Release(src_type);
+
     return hr;
 }
 

dlls/mfreadwrite/tests/mfplat.c

@@ -186,9 +186,9 @@ static struct async_callback *create_async_callback(void)
 
 static void test_source_reader(void)
 {
+    IMFMediaType *mediatype, *mediatype2;
     struct async_callback *callback;
     IMFAttributes *attributes;
-    IMFMediaType *mediatype;
     IMFSourceReader *reader;
     IMFMediaSource *source;
     IMFByteStream *stream;
@@ -267,6 +267,10 @@ todo_wine
 
     hr = IMFSourceReader_GetNativeMediaType(reader, MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0, &mediatype);
     ok(hr == S_OK, "Failed to get native mediatype, hr %#x.\n", hr);
+    hr = IMFSourceReader_GetNativeMediaType(reader, MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0, &mediatype2);
+    ok(hr == S_OK, "Failed to get native mediatype, hr %#x.\n", hr);
+    ok(mediatype != mediatype2, "Unexpected media type instance.\n");
+    IMFMediaType_Release(mediatype2);
     IMFMediaType_Release(mediatype);
 
     /* MF_SOURCE_READER_CURRENT_TYPE_INDEX is Win8+ */