Sweden-Number/dlls/qcap/tests/capturegraph.c

539 lines
21 KiB
C

/*
* Capture graph builder unit tests
*
* Copyright 2019 Zebediah Figura
* Copyright 2020 Zebediah Figura for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include "dshow.h"
#include "wine/strmbase.h"
#include "wine/test.h"
static ICaptureGraphBuilder2 *create_capture_graph(void)
{
ICaptureGraphBuilder2 *ret;
HRESULT hr = CoCreateInstance(&CLSID_CaptureGraphBuilder2, NULL,
CLSCTX_INPROC_SERVER, &IID_ICaptureGraphBuilder2, (void **)&ret);
ok(hr == S_OK, "Failed to create capture graph builder, hr %#x.\n", hr);
return ret;
}
static const GUID testiid = {0x11111111}, testtype = {0x22222222};
struct testfilter
{
struct strmbase_filter filter;
struct strmbase_source source, source2;
struct strmbase_sink sink, sink2;
BOOL filter_has_iface, source_has_iface, source2_has_iface, sink_has_iface, sink2_has_iface;
IKsPropertySet IKsPropertySet_iface;
};
static inline struct testfilter *impl_from_strmbase_filter(struct strmbase_filter *iface)
{
return CONTAINING_RECORD(iface, struct testfilter, filter);
}
static HRESULT testfilter_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
{
struct testfilter *filter = impl_from_strmbase_filter(iface);
ok(!IsEqualGUID(iid, &IID_IKsPropertySet), "Unexpected query for IKsPropertySet.\n");
if (filter->filter_has_iface && IsEqualGUID(iid, &testiid))
*out = &iface->IBaseFilter_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static struct strmbase_pin *testfilter_get_pin(struct strmbase_filter *iface, unsigned int index)
{
struct testfilter *filter = impl_from_strmbase_filter(iface);
if (!index)
return &filter->source.pin;
else if (index == 1)
return &filter->sink.pin;
else if (index == 2)
return &filter->source2.pin;
else if (index == 3)
return &filter->sink2.pin;
return NULL;
}
static void testfilter_destroy(struct strmbase_filter *iface)
{
struct testfilter *filter = impl_from_strmbase_filter(iface);
strmbase_source_cleanup(&filter->source);
strmbase_sink_cleanup(&filter->sink);
strmbase_filter_cleanup(&filter->filter);
}
static const struct strmbase_filter_ops testfilter_ops =
{
.filter_query_interface = testfilter_query_interface,
.filter_get_pin = testfilter_get_pin,
.filter_destroy = testfilter_destroy,
};
static struct testfilter *impl_from_IKsPropertySet(IKsPropertySet *iface)
{
return CONTAINING_RECORD(iface, struct testfilter, IKsPropertySet_iface);
}
static HRESULT WINAPI property_set_QueryInterface(IKsPropertySet *iface, REFIID iid, void **out)
{
struct testfilter *filter = impl_from_IKsPropertySet(iface);
return IPin_QueryInterface(&filter->source.pin.IPin_iface, iid, out);
}
static ULONG WINAPI property_set_AddRef(IKsPropertySet *iface)
{
struct testfilter *filter = impl_from_IKsPropertySet(iface);
return IPin_AddRef(&filter->source.pin.IPin_iface);
}
static ULONG WINAPI property_set_Release(IKsPropertySet *iface)
{
struct testfilter *filter = impl_from_IKsPropertySet(iface);
return IPin_Release(&filter->source.pin.IPin_iface);
}
static HRESULT WINAPI property_set_Set(IKsPropertySet *iface, REFGUID set, DWORD id,
void *instance_data, DWORD instance_size, void *property_data, DWORD property_size)
{
ok(0, "Unexpected call.\n");
return E_NOTIMPL;
}
static HRESULT WINAPI property_set_Get(IKsPropertySet *iface, REFGUID set, DWORD id,
void *instance_data, DWORD instance_size, void *property_data, DWORD property_size, DWORD *ret_size)
{
if (winetest_debug > 1) trace("Get()\n");
ok(IsEqualGUID(set, &AMPROPSETID_Pin), "Got set %s.\n", debugstr_guid(set));
ok(id == AMPROPERTY_PIN_CATEGORY, "Got id %#x.\n", id);
ok(!instance_data, "Got instance data %p.\n", instance_data);
ok(!instance_size, "Got instance size %u.\n", instance_size);
ok(property_size == sizeof(GUID), "Got property size %u.\n", property_size);
ok(!!ret_size, "Expected non-NULL return size.\n");
memcpy(property_data, &PIN_CATEGORY_CAPTURE, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI property_set_QuerySupported(IKsPropertySet *iface, REFGUID set, DWORD id, DWORD *flags)
{
ok(0, "Unexpected call.\n");
return E_NOTIMPL;
}
static const IKsPropertySetVtbl property_set_vtbl =
{
property_set_QueryInterface,
property_set_AddRef,
property_set_Release,
property_set_Set,
property_set_Get,
property_set_QuerySupported,
};
static HRESULT testsource_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
struct testfilter *filter = impl_from_strmbase_filter(iface->filter);
if (iface == &filter->source.pin && filter->source_has_iface && IsEqualGUID(iid, &testiid))
*out = &iface->IPin_iface;
else if (iface == &filter->source2.pin && filter->source2_has_iface && IsEqualGUID(iid, &testiid))
*out = &iface->IPin_iface;
else if (iface == &filter->source.pin && filter->IKsPropertySet_iface.lpVtbl
&& IsEqualGUID(iid, &IID_IKsPropertySet))
*out = &filter->IKsPropertySet_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT testsource_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
return S_OK;
}
static HRESULT testsource_get_media_type(struct strmbase_pin *iface, unsigned int index, AM_MEDIA_TYPE *mt)
{
if (!index)
{
memset(mt, 0, sizeof(*mt));
mt->majortype = testtype;
return S_OK;
}
return VFW_S_NO_MORE_ITEMS;
}
static HRESULT WINAPI testsource_DecideAllocator(struct strmbase_source *iface,
IMemInputPin *input, IMemAllocator **allocator)
{
return S_OK;
}
static const struct strmbase_source_ops testsource_ops =
{
.base.pin_query_interface = testsource_query_interface,
.base.pin_query_accept = testsource_query_accept,
.base.pin_get_media_type = testsource_get_media_type,
.pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
.pfnDecideAllocator = testsource_DecideAllocator,
};
static HRESULT testsink_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
struct testfilter *filter = impl_from_strmbase_filter(iface->filter);
ok(!IsEqualGUID(iid, &IID_IKsPropertySet), "Unexpected query for IKsPropertySet.\n");
if (IsEqualGUID(iid, &IID_IMemInputPin))
*out = &filter->sink.IMemInputPin_iface;
else if (iface == &filter->sink.pin && filter->sink_has_iface && IsEqualGUID(iid, &testiid))
*out = &iface->IPin_iface;
else if (iface == &filter->sink2.pin && filter->sink2_has_iface && IsEqualGUID(iid, &testiid))
*out = &iface->IPin_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT testsink_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
return S_OK;
}
static const struct strmbase_sink_ops testsink_ops =
{
.base.pin_query_interface = testsink_query_interface,
.base.pin_query_accept = testsink_query_accept,
.base.pin_get_media_type = strmbase_pin_get_media_type,
};
static void reset_interfaces(struct testfilter *filter)
{
filter->filter_has_iface = filter->sink_has_iface = filter->sink2_has_iface = TRUE;
filter->source_has_iface = filter->source2_has_iface = TRUE;
}
static void testfilter_init(struct testfilter *filter)
{
static const GUID clsid = {0xabacab};
memset(filter, 0, sizeof(*filter));
strmbase_filter_init(&filter->filter, NULL, &clsid, &testfilter_ops);
strmbase_source_init(&filter->source, &filter->filter, L"source", &testsource_ops);
strmbase_source_init(&filter->source2, &filter->filter, L"source2", &testsource_ops);
strmbase_sink_init(&filter->sink, &filter->filter, L"sink", &testsink_ops, NULL);
strmbase_sink_init(&filter->sink2, &filter->filter, L"sink2", &testsink_ops, NULL);
reset_interfaces(filter);
}
static void test_find_interface(void)
{
static const AM_MEDIA_TYPE mt1 =
{
.majortype = {0x111},
.subtype = {0x222},
.formattype = {0x333},
};
static const AM_MEDIA_TYPE mt2 =
{
.majortype = {0x444},
.subtype = {0x555},
.formattype = {0x666},
};
static const GUID bogus_majortype = {0x777};
ICaptureGraphBuilder2 *capture_graph = create_capture_graph();
struct testfilter filter1, filter2, filter3;
IGraphBuilder *graph;
unsigned int i;
IUnknown *unk;
HRESULT hr;
ULONG ref;
struct
{
BOOL *expose;
const void *iface;
}
tests_from_filter2[] =
{
{&filter2.filter_has_iface, &filter2.filter.IBaseFilter_iface},
{&filter2.source_has_iface, &filter2.source.pin.IPin_iface},
{&filter3.sink_has_iface, &filter3.sink.pin.IPin_iface},
{&filter3.filter_has_iface, &filter3.filter.IBaseFilter_iface},
{&filter3.source_has_iface, &filter3.source.pin.IPin_iface},
{&filter3.source2_has_iface, &filter3.source2.pin.IPin_iface},
{&filter2.source2_has_iface, &filter2.source2.pin.IPin_iface},
{&filter2.sink_has_iface, &filter2.sink.pin.IPin_iface},
{&filter1.source_has_iface, &filter1.source.pin.IPin_iface},
{&filter1.filter_has_iface, &filter1.filter.IBaseFilter_iface},
{&filter1.sink_has_iface, &filter1.sink.pin.IPin_iface},
{&filter1.sink2_has_iface, &filter1.sink2.pin.IPin_iface},
{&filter2.sink2_has_iface, &filter2.sink2.pin.IPin_iface},
}, tests_from_filter1[] =
{
{&filter1.filter_has_iface, &filter1.filter.IBaseFilter_iface},
{&filter1.source_has_iface, &filter1.source.pin.IPin_iface},
{&filter2.sink_has_iface, &filter2.sink.pin.IPin_iface},
{&filter2.filter_has_iface, &filter2.filter.IBaseFilter_iface},
{&filter2.source_has_iface, &filter2.source.pin.IPin_iface},
{&filter3.sink_has_iface, &filter3.sink.pin.IPin_iface},
{&filter3.filter_has_iface, &filter3.filter.IBaseFilter_iface},
{&filter3.source_has_iface, &filter3.source.pin.IPin_iface},
{&filter3.source2_has_iface, &filter3.source2.pin.IPin_iface},
{&filter2.source2_has_iface, &filter2.source2.pin.IPin_iface},
{&filter1.source2_has_iface, &filter1.source2.pin.IPin_iface},
{&filter1.sink_has_iface, &filter1.sink.pin.IPin_iface},
{&filter1.sink2_has_iface, &filter1.sink2.pin.IPin_iface},
}, look_upstream_tests[] =
{
{&filter2.sink_has_iface, &filter2.sink.pin.IPin_iface},
{&filter1.source_has_iface, &filter1.source.pin.IPin_iface},
{&filter1.filter_has_iface, &filter1.filter.IBaseFilter_iface},
{&filter1.sink_has_iface, &filter1.sink.pin.IPin_iface},
{&filter1.sink2_has_iface, &filter1.sink2.pin.IPin_iface},
{&filter2.sink2_has_iface, &filter2.sink2.pin.IPin_iface},
}, look_downstream_tests[] =
{
{&filter2.source_has_iface, &filter2.source.pin.IPin_iface},
{&filter3.sink_has_iface, &filter3.sink.pin.IPin_iface},
{&filter3.filter_has_iface, &filter3.filter.IBaseFilter_iface},
{&filter3.source_has_iface, &filter3.source.pin.IPin_iface},
{&filter3.source2_has_iface, &filter3.source2.pin.IPin_iface},
{&filter2.source2_has_iface, &filter2.source2.pin.IPin_iface},
}, category_tests[] =
{
{&filter3.filter_has_iface, &filter3.filter.IBaseFilter_iface},
{&filter3.source_has_iface, &filter3.source.pin.IPin_iface},
{&filter3.source2_has_iface, &filter3.source2.pin.IPin_iface},
{&filter2.sink_has_iface, &filter2.sink.pin.IPin_iface},
{&filter1.source_has_iface, &filter1.source.pin.IPin_iface},
{&filter1.filter_has_iface, &filter1.filter.IBaseFilter_iface},
{&filter1.sink_has_iface, &filter1.sink.pin.IPin_iface},
{&filter1.sink2_has_iface, &filter1.sink2.pin.IPin_iface},
{&filter2.sink2_has_iface, &filter2.sink2.pin.IPin_iface},
};
CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, &IID_IGraphBuilder, (void **)&graph);
hr = ICaptureGraphBuilder2_SetFiltergraph(capture_graph, graph);
ok(hr == S_OK, "Got hr %#x.\n", hr);
testfilter_init(&filter1);
IGraphBuilder_AddFilter(graph, &filter1.filter.IBaseFilter_iface, L"filter1");
testfilter_init(&filter2);
IGraphBuilder_AddFilter(graph, &filter2.filter.IBaseFilter_iface, L"filter2");
testfilter_init(&filter3);
IGraphBuilder_AddFilter(graph, &filter3.filter.IBaseFilter_iface, L"filter3");
hr = IGraphBuilder_ConnectDirect(graph, &filter1.source.pin.IPin_iface, &filter2.sink.pin.IPin_iface, &mt1);
ok(hr == S_OK, "Got hr %#x.\n", hr);
hr = IGraphBuilder_ConnectDirect(graph, &filter2.source.pin.IPin_iface, &filter3.sink.pin.IPin_iface, &mt2);
ok(hr == S_OK, "Got hr %#x.\n", hr);
/* Test search order without any restrictions applied. */
for (i = 0; i < ARRAY_SIZE(tests_from_filter2); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, NULL, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == tests_from_filter2[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*tests_from_filter2[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, NULL, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
reset_interfaces(&filter1);
reset_interfaces(&filter2);
reset_interfaces(&filter3);
for (i = 0; i < ARRAY_SIZE(tests_from_filter1); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, NULL, &bogus_majortype,
&filter1.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == tests_from_filter1[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*tests_from_filter1[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, NULL, &bogus_majortype,
&filter1.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
/* Test with upstream/downstream flags. */
reset_interfaces(&filter1);
reset_interfaces(&filter2);
reset_interfaces(&filter3);
for (i = 0; i < ARRAY_SIZE(look_upstream_tests); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &LOOK_UPSTREAM_ONLY, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == look_upstream_tests[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*look_upstream_tests[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &LOOK_UPSTREAM_ONLY, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
reset_interfaces(&filter1);
reset_interfaces(&filter2);
reset_interfaces(&filter3);
for (i = 0; i < ARRAY_SIZE(look_downstream_tests); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &LOOK_DOWNSTREAM_ONLY, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == look_downstream_tests[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*look_downstream_tests[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &LOOK_DOWNSTREAM_ONLY, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
/* Test with a category flag. */
reset_interfaces(&filter1);
reset_interfaces(&filter2);
reset_interfaces(&filter3);
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Got hr %#x\n", hr);
ok(unk == (IUnknown *)&filter2.filter.IBaseFilter_iface, "Got wrong interface %p.\n", unk);
IUnknown_Release(unk);
filter2.filter_has_iface = FALSE;
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
filter2.IKsPropertySet_iface.lpVtbl = &property_set_vtbl;
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Got hr %#x.\n", hr);
ok(unk == (IUnknown *)&filter2.source.pin.IPin_iface, "Got wrong interface %p.\n", unk);
IUnknown_Release(unk);
filter2.source_has_iface = FALSE;
/* Native returns the filter3 sink next, but suffers from a bug wherein it
* releases a reference to the wrong pin. */
filter3.sink_has_iface = FALSE;
for (i = 0; i < ARRAY_SIZE(category_tests); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == category_tests[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*category_tests[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
/* Test with a media type. */
reset_interfaces(&filter1);
reset_interfaces(&filter2);
reset_interfaces(&filter3);
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Got hr %#x\n", hr);
ok(unk == (IUnknown *)&filter2.filter.IBaseFilter_iface, "Got wrong interface %p.\n", unk);
IUnknown_Release(unk);
filter2.filter_has_iface = FALSE;
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, &bogus_majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, &mt2.majortype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_NOINTERFACE, "Got hr %#x.\n", hr);
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, &testtype,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Got hr %#x.\n", hr);
ok(unk == (IUnknown *)&filter2.source.pin.IPin_iface, "Got wrong interface %p.\n", unk);
IUnknown_Release(unk);
filter2.source_has_iface = FALSE;
filter3.sink_has_iface = FALSE;
for (i = 0; i < ARRAY_SIZE(category_tests); ++i)
{
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == S_OK, "Test %u: got hr %#x.\n", i, hr);
ok(unk == category_tests[i].iface, "Test %u: got wrong interface %p.\n", i, unk);
IUnknown_Release(unk);
*category_tests[i].expose = FALSE;
}
hr = ICaptureGraphBuilder2_FindInterface(capture_graph, &PIN_CATEGORY_CAPTURE, NULL,
&filter2.filter.IBaseFilter_iface, &testiid, (void **)&unk);
ok(hr == E_FAIL, "Got hr %#x.\n", hr);
ref = ICaptureGraphBuilder2_Release(capture_graph);
ok(!ref, "Got outstanding refcount %d.\n", ref);
ref = IGraphBuilder_Release(graph);
ok(!ref, "Got outstanding refcount %d.\n", ref);
ref = IBaseFilter_Release(&filter1.filter.IBaseFilter_iface);
ok(!ref, "Got outstanding refcount %d.\n", ref);
ref = IBaseFilter_Release(&filter2.filter.IBaseFilter_iface);
ok(!ref, "Got outstanding refcount %d.\n", ref);
ref = IBaseFilter_Release(&filter3.filter.IBaseFilter_iface);
ok(!ref, "Got outstanding refcount %d.\n", ref);
}
START_TEST(capturegraph)
{
CoInitializeEx(NULL, COINIT_MULTITHREADED);
test_find_interface();
CoUninitialize();
}