dlls/quartz/tests/acmwrapper.c

   1 /*
   2  * ACM wrapper filter unit tests
   3  *
   4  * Copyright 2018 Zebediah Figura
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22 #include "dshow.h"
  23 #include "wine/test.h"
  24
  25 static IBaseFilter *create_acm_wrapper(void)
  26 {
  27     IBaseFilter *filter = NULL;
  28     HRESULT hr = CoCreateInstance(&CLSID_ACMWrapper, NULL, CLSCTX_INPROC_SERVER,
  29             &IID_IBaseFilter, (void **)&filter);
  30     ok(hr == S_OK, "Got hr %#lx.\n", hr);
  31     return filter;
  32 }
  33
  34 static ULONG get_refcount(void *iface)
  35 {
  36     IUnknown *unknown = iface;
  37     IUnknown_AddRef(unknown);
  38     return IUnknown_Release(unknown);
  39 }
  40
  41 #define check_interface(a, b, c) check_interface_(__LINE__, a, b, c)
  42 static void check_interface_(unsigned int line, void *iface_ptr, REFIID iid, BOOL supported)
  43 {
  44     IUnknown *iface = iface_ptr;
  45     HRESULT hr, expected_hr;
  46     IUnknown *unk;
  47
  48     expected_hr = supported ? S_OK : E_NOINTERFACE;
  49
  50     hr = IUnknown_QueryInterface(iface, iid, (void **)&unk);
  51     ok_(__FILE__, line)(hr == expected_hr, "Got hr %#lx, expected %#lx.\n", hr, expected_hr);
  52     if (SUCCEEDED(hr))
  53         IUnknown_Release(unk);
  54 }
  55
  56 static void test_interfaces(void)
  57 {
  58     IBaseFilter *filter = create_acm_wrapper();
  59     IPin *pin;
  60
  61     check_interface(filter, &IID_IBaseFilter, TRUE);
  62     check_interface(filter, &IID_IMediaFilter, TRUE);
  63     check_interface(filter, &IID_IPersist, TRUE);
  64     todo_wine check_interface(filter, &IID_IPersistPropertyBag, TRUE);
  65     check_interface(filter, &IID_IUnknown, TRUE);
  66
  67     check_interface(filter, &IID_IAMFilterMiscFlags, FALSE);
  68     check_interface(filter, &IID_IBasicAudio, FALSE);
  69     check_interface(filter, &IID_IBasicVideo, FALSE);
  70     check_interface(filter, &IID_IKsPropertySet, FALSE);
  71     check_interface(filter, &IID_IMediaPosition, FALSE);
  72     check_interface(filter, &IID_IMediaSeeking, FALSE);
  73     check_interface(filter, &IID_IPin, FALSE);
  74     check_interface(filter, &IID_IQualityControl, FALSE);
  75     check_interface(filter, &IID_IQualProp, FALSE);
  76     check_interface(filter, &IID_IReferenceClock, FALSE);
  77     check_interface(filter, &IID_IVideoWindow, FALSE);
  78
  79     IBaseFilter_FindPin(filter, L"In", &pin);
  80
  81     check_interface(pin, &IID_IMemInputPin, TRUE);
  82     check_interface(pin, &IID_IPin, TRUE);
  83     todo_wine check_interface(pin, &IID_IQualityControl, TRUE);
  84     check_interface(pin, &IID_IUnknown, TRUE);
  85
  86     check_interface(pin, &IID_IMediaPosition, FALSE);
  87     check_interface(pin, &IID_IMediaSeeking, FALSE);
  88
  89     IPin_Release(pin);
  90
  91     IBaseFilter_FindPin(filter, L"Out", &pin);
  92
  93     check_interface(pin, &IID_IPin, TRUE);
  94     todo_wine check_interface(pin, &IID_IMediaPosition, TRUE);
  95     check_interface(pin, &IID_IMediaSeeking, TRUE);
  96     check_interface(pin, &IID_IQualityControl, TRUE);
  97     check_interface(pin, &IID_IUnknown, TRUE);
  98
  99     check_interface(pin, &IID_IAsyncReader, FALSE);
 100
 101     IPin_Release(pin);
 102
 103     IBaseFilter_Release(filter);
 104 }
 105
 106 static const GUID test_iid = {0x33333333};
 107 static LONG outer_ref = 1;
 108
 109 static HRESULT WINAPI outer_QueryInterface(IUnknown *iface, REFIID iid, void **out)
 110 {
 111     if (IsEqualGUID(iid, &IID_IUnknown)
 112             || IsEqualGUID(iid, &IID_IBaseFilter)
 113             || IsEqualGUID(iid, &test_iid))
 114     {
 115         *out = (IUnknown *)0xdeadbeef;
 116         return S_OK;
 117     }
 118     ok(0, "unexpected call %s\n", wine_dbgstr_guid(iid));
 119     return E_NOINTERFACE;
 120 }
 121
 122 static ULONG WINAPI outer_AddRef(IUnknown *iface)
 123 {
 124     return InterlockedIncrement(&outer_ref);
 125 }
 126
 127 static ULONG WINAPI outer_Release(IUnknown *iface)
 128 {
 129     return InterlockedDecrement(&outer_ref);
 130 }
 131
 132 static const IUnknownVtbl outer_vtbl =
 133 {
 134     outer_QueryInterface,
 135     outer_AddRef,
 136     outer_Release,
 137 };
 138
 139 static IUnknown test_outer = {&outer_vtbl};
 140
 141 static void test_aggregation(void)
 142 {
 143     IBaseFilter *filter, *filter2;
 144     IUnknown *unk, *unk2;
 145     HRESULT hr;
 146     ULONG ref;
 147
 148     filter = (IBaseFilter *)0xdeadbeef;
 149     hr = CoCreateInstance(&CLSID_ACMWrapper, &test_outer, CLSCTX_INPROC_SERVER,
 150             &IID_IBaseFilter, (void **)&filter);
 151     ok(hr == E_NOINTERFACE, "Got hr %#lx.\n", hr);
 152     ok(!filter, "Got interface %p.\n", filter);
 153
 154     hr = CoCreateInstance(&CLSID_ACMWrapper, &test_outer, CLSCTX_INPROC_SERVER,
 155             &IID_IUnknown, (void **)&unk);
 156     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 157     ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
 158     ok(unk != &test_outer, "Returned IUnknown should not be outer IUnknown.\n");
 159     ref = get_refcount(unk);
 160     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 161
 162     ref = IUnknown_AddRef(unk);
 163     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 164     ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
 165
 166     ref = IUnknown_Release(unk);
 167     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 168     ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
 169
 170     hr = IUnknown_QueryInterface(unk, &IID_IUnknown, (void **)&unk2);
 171     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 172     ok(unk2 == unk, "Got unexpected IUnknown %p.\n", unk2);
 173     IUnknown_Release(unk2);
 174
 175     hr = IUnknown_QueryInterface(unk, &IID_IBaseFilter, (void **)&filter);
 176     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 177
 178     hr = IBaseFilter_QueryInterface(filter, &IID_IUnknown, (void **)&unk2);
 179     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 180     ok(unk2 == (IUnknown *)0xdeadbeef, "Got unexpected IUnknown %p.\n", unk2);
 181
 182     hr = IBaseFilter_QueryInterface(filter, &IID_IBaseFilter, (void **)&filter2);
 183     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 184     ok(filter2 == (IBaseFilter *)0xdeadbeef, "Got unexpected IBaseFilter %p.\n", filter2);
 185
 186     hr = IUnknown_QueryInterface(unk, &test_iid, (void **)&unk2);
 187     ok(hr == E_NOINTERFACE, "Got hr %#lx.\n", hr);
 188     ok(!unk2, "Got unexpected IUnknown %p.\n", unk2);
 189
 190     hr = IBaseFilter_QueryInterface(filter, &test_iid, (void **)&unk2);
 191     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 192     ok(unk2 == (IUnknown *)0xdeadbeef, "Got unexpected IUnknown %p.\n", unk2);
 193
 194     IBaseFilter_Release(filter);
 195     ref = IUnknown_Release(unk);
 196     ok(!ref, "Got unexpected refcount %ld.\n", ref);
 197     ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
 198 }
 199
 200 static void test_enum_pins(void)
 201 {
 202     IBaseFilter *filter = create_acm_wrapper();
 203     IEnumPins *enum1, *enum2;
 204     ULONG count, ref;
 205     IPin *pins[3];
 206     HRESULT hr;
 207
 208     ref = get_refcount(filter);
 209     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 210
 211     hr = IBaseFilter_EnumPins(filter, NULL);
 212     ok(hr == E_POINTER, "Got hr %#lx.\n", hr);
 213
 214     hr = IBaseFilter_EnumPins(filter, &enum1);
 215     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 216     ref = get_refcount(filter);
 217     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 218     ref = get_refcount(enum1);
 219     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 220
 221     hr = IEnumPins_Next(enum1, 1, NULL, NULL);
 222     ok(hr == E_POINTER, "Got hr %#lx.\n", hr);
 223
 224     hr = IEnumPins_Next(enum1, 1, pins, NULL);
 225     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 226     ref = get_refcount(filter);
 227     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 228     ref = get_refcount(pins[0]);
 229     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 230     ref = get_refcount(enum1);
 231     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 232     IPin_Release(pins[0]);
 233     ref = get_refcount(filter);
 234     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 235
 236     hr = IEnumPins_Next(enum1, 1, pins, NULL);
 237     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 238     ref = get_refcount(filter);
 239     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 240     ref = get_refcount(pins[0]);
 241     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 242     ref = get_refcount(enum1);
 243     ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
 244     IPin_Release(pins[0]);
 245     ref = get_refcount(filter);
 246     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 247
 248     hr = IEnumPins_Next(enum1, 1, pins, NULL);
 249     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 250
 251     hr = IEnumPins_Reset(enum1);
 252     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 253
 254     hr = IEnumPins_Next(enum1, 1, pins, &count);
 255     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 256     ok(count == 1, "Got count %lu.\n", count);
 257     IPin_Release(pins[0]);
 258
 259     hr = IEnumPins_Next(enum1, 1, pins, &count);
 260     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 261     ok(count == 1, "Got count %lu.\n", count);
 262     IPin_Release(pins[0]);
 263
 264     hr = IEnumPins_Next(enum1, 1, pins, &count);
 265     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 266     ok(!count, "Got count %lu.\n", count);
 267
 268     hr = IEnumPins_Reset(enum1);
 269     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 270
 271     hr = IEnumPins_Next(enum1, 2, pins, NULL);
 272     ok(hr == E_INVALIDARG, "Got hr %#lx.\n", hr);
 273
 274     hr = IEnumPins_Next(enum1, 2, pins, &count);
 275     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 276     ok(count == 2, "Got count %lu.\n", count);
 277     IPin_Release(pins[0]);
 278     IPin_Release(pins[1]);
 279
 280     hr = IEnumPins_Next(enum1, 2, pins, &count);
 281     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 282     ok(!count, "Got count %lu.\n", count);
 283
 284     hr = IEnumPins_Reset(enum1);
 285     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 286
 287     hr = IEnumPins_Next(enum1, 3, pins, &count);
 288     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 289     ok(count == 2, "Got count %lu.\n", count);
 290     IPin_Release(pins[0]);
 291     IPin_Release(pins[1]);
 292
 293     hr = IEnumPins_Reset(enum1);
 294     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 295
 296     hr = IEnumPins_Clone(enum1, &enum2);
 297     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 298
 299     hr = IEnumPins_Skip(enum1, 3);
 300     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 301
 302     hr = IEnumPins_Skip(enum1, 2);
 303     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 304
 305     hr = IEnumPins_Skip(enum1, 1);
 306     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 307
 308     hr = IEnumPins_Next(enum1, 1, pins, NULL);
 309     ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
 310
 311     hr = IEnumPins_Next(enum2, 1, pins, NULL);
 312     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 313     IPin_Release(pins[0]);
 314
 315     IEnumPins_Release(enum2);
 316     IEnumPins_Release(enum1);
 317     ref = IBaseFilter_Release(filter);
 318     ok(!ref, "Got outstanding refcount %ld.\n", ref);
 319 }
 320
 321 static void test_find_pin(void)
 322 {
 323     IBaseFilter *filter = create_acm_wrapper();
 324     IEnumPins *enum_pins;
 325     IPin *pin, *pin2;
 326     HRESULT hr;
 327     ULONG ref;
 328
 329     hr = IBaseFilter_EnumPins(filter, &enum_pins);
 330     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 331
 332     hr = IBaseFilter_FindPin(filter, L"In", &pin);
 333     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 334     hr = IEnumPins_Next(enum_pins, 1, &pin2, NULL);
 335     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 336     ok(pin == pin2, "Pins didn't match.\n");
 337     IPin_Release(pin);
 338     IPin_Release(pin2);
 339
 340     hr = IBaseFilter_FindPin(filter, L"Out", &pin);
 341     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 342     hr = IEnumPins_Next(enum_pins, 1, &pin2, NULL);
 343     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 344     ok(pin == pin2, "Pins didn't match.\n");
 345     IPin_Release(pin);
 346     IPin_Release(pin2);
 347
 348     hr = IBaseFilter_FindPin(filter, L"Input", &pin);
 349     ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
 350     hr = IBaseFilter_FindPin(filter, L"Output", &pin);
 351     ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
 352     hr = IBaseFilter_FindPin(filter, L"input pin", &pin);
 353     ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
 354     hr = IBaseFilter_FindPin(filter, L"output pin", &pin);
 355     ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
 356
 357     IEnumPins_Release(enum_pins);
 358     ref = IBaseFilter_Release(filter);
 359     ok(!ref, "Got outstanding refcount %ld.\n", ref);
 360 }
 361
 362 static void test_pin_info(void)
 363 {
 364     IBaseFilter *filter = create_acm_wrapper();
 365     PIN_DIRECTION dir;
 366     PIN_INFO info;
 367     HRESULT hr;
 368     WCHAR *id;
 369     ULONG ref;
 370     IPin *pin;
 371
 372     hr = IBaseFilter_FindPin(filter, L"In", &pin);
 373     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 374     ref = get_refcount(filter);
 375     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 376     ref = get_refcount(pin);
 377     ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
 378
 379     hr = IPin_QueryPinInfo(pin, &info);
 380     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 381     ok(info.pFilter == filter, "Expected filter %p, got %p.\n", filter, info.pFilter);
 382     ok(info.dir == PINDIR_INPUT, "Got direction %d.\n", info.dir);
 383     ok(!wcscmp(info.achName, L"Input"), "Got name %s.\n", debugstr_w(info.achName));
 384     ref = get_refcount(filter);
 385     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 386     ref = get_refcount(pin);
 387     ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
 388     IBaseFilter_Release(info.pFilter);
 389
 390     hr = IPin_QueryDirection(pin, &dir);
 391     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 392     ok(dir == PINDIR_INPUT, "Got direction %d.\n", dir);
 393
 394     hr = IPin_QueryId(pin, &id);
 395     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 396     ok(!wcscmp(id, L"In"), "Got id %s.\n", wine_dbgstr_w(id));
 397     CoTaskMemFree(id);
 398
 399     hr = IPin_QueryInternalConnections(pin, NULL, NULL);
 400     ok(hr == E_NOTIMPL, "Got hr %#lx.\n", hr);
 401
 402     IPin_Release(pin);
 403
 404     hr = IBaseFilter_FindPin(filter, L"Out", &pin);
 405     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 406
 407     check_interface(pin, &IID_IPin, TRUE);
 408     check_interface(pin, &IID_IMediaSeeking, TRUE);
 409
 410     hr = IPin_QueryPinInfo(pin, &info);
 411     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 412     ok(info.pFilter == filter, "Expected filter %p, got %p.\n", filter, info.pFilter);
 413     ok(info.dir == PINDIR_OUTPUT, "Got direction %d.\n", info.dir);
 414     ok(!wcscmp(info.achName, L"Output"), "Got name %s.\n", debugstr_w(info.achName));
 415     IBaseFilter_Release(info.pFilter);
 416
 417     hr = IPin_QueryDirection(pin, &dir);
 418     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 419     ok(dir == PINDIR_OUTPUT, "Got direction %d.\n", dir);
 420
 421     hr = IPin_QueryId(pin, &id);
 422     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 423     ok(!wcscmp(id, L"Out"), "Got id %s.\n", wine_dbgstr_w(id));
 424     CoTaskMemFree(id);
 425
 426     hr = IPin_QueryInternalConnections(pin, NULL, NULL);
 427     ok(hr == E_NOTIMPL, "Got hr %#lx.\n", hr);
 428
 429     IPin_Release(pin);
 430
 431     ref = IBaseFilter_Release(filter);
 432     ok(!ref, "Got outstanding refcount %ld.\n", ref);
 433 }
 434
 435 static void test_unconnected_filter_state(void)
 436 {
 437     IBaseFilter *filter = create_acm_wrapper();
 438     FILTER_STATE state;
 439     HRESULT hr;
 440     ULONG ref;
 441
 442     hr = IBaseFilter_GetState(filter, 0, &state);
 443     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 444     ok(state == State_Stopped, "Got state %u.\n", state);
 445
 446     hr = IBaseFilter_Pause(filter);
 447     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 448
 449     hr = IBaseFilter_GetState(filter, 0, &state);
 450     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 451     ok(state == State_Paused, "Got state %u.\n", state);
 452
 453     hr = IBaseFilter_Run(filter, 0);
 454     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 455
 456     hr = IBaseFilter_GetState(filter, 0, &state);
 457     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 458     ok(state == State_Running, "Got state %u.\n", state);
 459
 460     hr = IBaseFilter_Pause(filter);
 461     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 462
 463     hr = IBaseFilter_GetState(filter, 0, &state);
 464     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 465     ok(state == State_Paused, "Got state %u.\n", state);
 466
 467     hr = IBaseFilter_Stop(filter);
 468     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 469
 470     hr = IBaseFilter_GetState(filter, 0, &state);
 471     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 472     ok(state == State_Stopped, "Got state %u.\n", state);
 473
 474     hr = IBaseFilter_Run(filter, 0);
 475     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 476
 477     hr = IBaseFilter_GetState(filter, 0, &state);
 478     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 479     ok(state == State_Running, "Got state %u.\n", state);
 480
 481     hr = IBaseFilter_Stop(filter);
 482     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 483
 484     hr = IBaseFilter_GetState(filter, 0, &state);
 485     ok(hr == S_OK, "Got hr %#lx.\n", hr);
 486     ok(state == State_Stopped, "Got state %u.\n", state);
 487
 488     ref = IBaseFilter_Release(filter);
 489     ok(!ref, "Got outstanding refcount %ld.\n", ref);
 490 }
 491
 492 START_TEST(acmwrapper)
 493 {
 494     CoInitialize(NULL);
 495
 496     test_interfaces();
 497     test_aggregation();
 498     test_enum_pins();
 499     test_find_pin();
 500     test_pin_info();
 501     test_unconnected_filter_state();
 502
 503     CoUninitialize();
 504 }