winegstreamer: Implement media_object_GetStreamCount for WMV decoder.

dlls/mf/tests/transform.c

@@ -4501,22 +4501,16 @@ static void test_wmv_decoder_media_object(void)
     /* Test GetStreamCount. */
     in_count = out_count = 0xdeadbeef;
     hr = IMediaObject_GetStreamCount(media_object, &in_count, &out_count);
-    todo_wine
     ok(hr == S_OK, "GetStreamCount returned %#lx.\n", hr);
-    if (hr == S_OK)
-    {
     ok(in_count == 1, "Got unexpected in_count %lu.\n", in_count);
     ok(out_count == 1, "Got unexpected in_count %lu.\n", out_count);
-    }
 
     /* Test GetStreamCount with invalid arguments. */
     in_count = out_count = 0xdeadbeef;
     hr = IMediaObject_GetStreamCount(media_object, NULL, &out_count);
-    todo_wine
     ok(hr == E_POINTER, "GetStreamCount returned %#lx.\n", hr);
     ok(out_count == 0xdeadbeef, "Got unexpected out_count %lu.\n", out_count);
     hr = IMediaObject_GetStreamCount(media_object, &in_count, NULL);
-    todo_wine
     ok(hr == E_POINTER, "GetStreamCount returned %#lx.\n", hr);
     ok(in_count == 0xdeadbeef, "Got unexpected in_count %lu.\n", in_count);
 

dlls/winegstreamer/wmv_decoder.c

@@ -320,8 +320,14 @@ static ULONG WINAPI media_object_Release(IMediaObject *iface)
 
 static HRESULT WINAPI media_object_GetStreamCount(IMediaObject *iface, DWORD *input, DWORD *output)
 {
-    FIXME("iface %p, input %p, output %p stub!\n", iface, input, output);
-    return E_NOTIMPL;
+    TRACE("iface %p, input %p, output %p.\n", iface, input, output);
+
+    if (!input || !output)
+        return E_POINTER;
+
+    *input = *output = 1;
+
+    return S_OK;
 }
 
 static HRESULT WINAPI media_object_GetInputStreamInfo(IMediaObject *iface, DWORD index, DWORD *flags)