dlls/quartz/tests/referenceclock.c

   1 /*
   2  * Unit tests for Direct Show functions - IReferenceClock
   3  *
   4  * Copyright (C) 2007 Alex Villacís Lasso
   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 #include <assert.h>
  22
  23 #define COBJMACROS
  24
  25 #include "wine/test.h"
  26 #include "uuids.h"
  27 #include "dshow.h"
  28 #include "control.h"
  29
  30 static void test_IReferenceClock_query_interface(const char * clockdesc, IReferenceClock * pClock)
  31 {
  32     HRESULT hr;
  33     IUnknown *pF;
  34
  35     hr = IReferenceClock_QueryInterface(pClock, &IID_IUnknown, (LPVOID *)&pF);
  36     ok(hr == S_OK, "IReferenceClock_QueryInterface returned %x\n", hr);
  37     ok(pF != NULL, "pF is NULL\n");
  38
  39     hr = IReferenceClock_QueryInterface(pClock, &IID_IDirectDraw, (LPVOID *)&pF);
  40     ok(hr == E_NOINTERFACE, "IReferenceClock_QueryInterface returned %x\n", hr);
  41     ok(pF == NULL, "pF is not NULL\n");
  42
  43     hr = IReferenceClock_QueryInterface(pClock, &IID_IReferenceClock, (LPVOID *)&pF);
  44     ok(hr == S_OK, "IReferenceClock_QueryInterface returned %x\n", hr);
  45     ok(pF != NULL, "pF is NULL\n");
  46 }
  47
  48 /* The following method expects a reference clock that will keep ticking for
  49  * at least 5 seconds since its creation. This method assumes no other methods
  50  * were called on the IReferenceClock interface since its creation.
  51  */
  52 static void test_IReferenceClock_methods(const char * clockdesc, IReferenceClock * pClock)
  53 {
  54     HRESULT hr;
  55     REFERENCE_TIME time1;
  56     REFERENCE_TIME time2;
  57     signed long diff;
  58
  59     /* Test response from invalid (NULL) argument */
  60     hr = IReferenceClock_GetTime(pClock, NULL);
  61     ok (hr == E_POINTER, "%s - Expected E_POINTER (0x%08x), got 0x%08x\n", clockdesc, E_POINTER, hr);
  62
  63     /* Test response for valid value - try 1 */
  64     /* TODO: test whether Windows actually returns S_FALSE in its first invocation */
  65     time1 = (REFERENCE_TIME)0xdeadbeef;
  66     hr = IReferenceClock_GetTime(pClock, &time1);
  67     ok (hr == S_FALSE || hr == S_OK, "%s - Expected S_OK or S_FALSE, got 0x%08x\n", clockdesc, hr);
  68     ok (time1 != 0xdeadbeef, "%s - value was NOT changed on return!\n", clockdesc);
  69
  70     /* Test response for valid value - try 2 */
  71     time2 = (REFERENCE_TIME)0xdeadbeef;
  72     hr = IReferenceClock_GetTime(pClock, &time2);
  73     ok (hr == S_FALSE || hr == S_OK, "%s - Expected S_OK or S_FALSE, got 0x%08x\n", clockdesc, hr);
  74     ok (time2 != 0xdeadbeef, "%s - value was NOT changed on return!\n", clockdesc);
  75
  76     /* In case the second invocation managed to return S_FALSE, MSDN says the
  77        returned time is the same as the previous one. */
  78     ok ((hr != S_FALSE || time1 == time2), "%s - returned S_FALSE, but values not equal!\n", clockdesc);
  79
  80     time1 = time2;
  81     Sleep(1000); /* Sleep for at least 1 second */
  82     hr = IReferenceClock_GetTime(pClock, &time2);
  83     /* After a 1-second sleep, there is no excuse to get S_FALSE (see TODO above) */
  84     ok (hr == S_OK, "%s - Expected S_OK, got 0x%08x\n", clockdesc, hr);
  85
  86     /* FIXME: How much deviation should be allowed after a sleep? */
  87     /* 0.3% is common, and 0.4% is sometimes observed. */
  88     diff = time2 - time1;
  89     ok (9940000 <= diff && diff <= 10240000, "%s - Expected difference around 10000000, got %lu\n", clockdesc, diff);
  90
  91 }
  92
  93 static void test_IReferenceClock_SystemClock(void)
  94 {
  95     IReferenceClock * pReferenceClock;
  96     HRESULT hr;
  97
  98     hr = CoCreateInstance(&CLSID_SystemClock, NULL, CLSCTX_INPROC_SERVER, &IID_IReferenceClock, (LPVOID*)&pReferenceClock);
  99     ok(hr == S_OK, "Unable to create reference clock from system clock %x\n", hr);
 100     if (hr == S_OK)
 101     {
 102         test_IReferenceClock_query_interface("SystemClock", pReferenceClock);
 103         test_IReferenceClock_methods("SystemClock", pReferenceClock);
 104         IReferenceClock_Release(pReferenceClock);
 105     }
 106 }
 107
 108 START_TEST(referenceclock)
 109 {
 110     CoInitialize(NULL);
 111
 112     test_IReferenceClock_SystemClock();
 113
 114     CoUninitialize();
 115 }