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