dlls/winmm/tests/timer.c

   1 /*
   2  * Test winmm timer
   3  *
   4  * Copyright (c) 2005 Robert Reif
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <math.h>
  25
  26 #include "wine/test.h"
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winnls.h"
  30 #include "mmsystem.h"
  31 #define NOBITMAP
  32 #include "mmreg.h"
  33
  34 #include "winmm_test.h"
  35
  36 static TIMECAPS tc;
  37
  38 static void test_timeGetDevCaps()
  39 {
  40    MMRESULT rc;
  41
  42     rc = timeGetDevCaps(&tc, 0);
  43     ok(rc == TIMERR_NOCANDO || rc == MMSYSERR_INVALPARAM,
  44        "timeGetDevCaps() returned %s, should have returned TIMERR_NOCANDO "
  45        "or MMSYSERR_INVALPARAM\n", mmsys_error(rc));
  46
  47     rc = timeGetDevCaps(0, sizeof(tc));
  48     ok(rc == TIMERR_NOCANDO || rc == TIMERR_STRUCT,
  49        "timeGetDevCaps() returned %s, should have returned TIMERR_NOCANDO "
  50        "or TIMERR_STRUCT\n", mmsys_error(rc));
  51
  52     rc = timeGetDevCaps(0, 0);
  53     ok(rc == TIMERR_NOCANDO || rc == MMSYSERR_INVALPARAM,
  54        "timeGetDevCaps() returned %s, should have returned TIMERR_NOCANDO "
  55        "or MMSYSERR_INVALPARAM\n", mmsys_error(rc));
  56
  57     rc = timeGetDevCaps(&tc, sizeof(tc));
  58     ok(rc == TIMERR_NOERROR, "timeGetDevCaps() returned %s, "
  59        "should have returned TIMERR_NOERROR\n", mmsys_error(rc));
  60
  61     if (rc == TIMERR_NOERROR)
  62         trace("wPeriodMin = %u, wPeriodMax = %u\n",
  63               tc.wPeriodMin, tc.wPeriodMax);
  64 }
  65
  66 #define NUM_SAMPLES    100
  67
  68 static DWORD count = 0;
  69 static DWORD times[NUM_SAMPLES];
  70
  71 static void CALLBACK testTimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
  72 {
  73     if (count < NUM_SAMPLES)
  74         times[count++] = timeGetTime();
  75 }
  76
  77 static void test_timer(UINT period, UINT resolution)
  78 {
  79     MMRESULT rc;
  80     UINT i, id, delta;
  81     DWORD dwMin = 0xffffffff, dwMax = 0;
  82     double sum = 0.0;
  83     double deviation = 0.0;
  84
  85     count = 0;
  86
  87     for (i = 0; i < NUM_SAMPLES; i++)
  88         times[i] = 0;
  89
  90     rc = timeBeginPeriod(period);
  91     ok(rc == TIMERR_NOERROR, "timeBeginPeriod(%u) returned %s, "
  92        "should have returned TIMERR_NOERROR\n", period, mmsys_error(rc));
  93     if (rc != TIMERR_NOERROR)
  94         return;
  95
  96     id = timeSetEvent(period, resolution, testTimeProc, 0, TIME_PERIODIC);
  97     ok(id != 0, "timeSetEvent(%u, %u, %p, 0, TIME_PERIODIC) returned %d, "
  98        "should have returned id > 0\n", period, resolution, testTimeProc, id);
  99     if (id == 0)
 100         return;
 101
 102     Sleep((NUM_SAMPLES * period) + (2 * period));
 103
 104     rc = timeEndPeriod(period);
 105     ok(rc == TIMERR_NOERROR, "timeEndPeriod(%u) returned %s, "
 106        "should have returned TIMERR_NOERROR\n", period, mmsys_error(rc));
 107     if (rc != TIMERR_NOERROR)
 108         return;
 109
 110     rc = timeKillEvent(id);
 111     ok(rc == TIMERR_NOERROR, "timeKillEvent(%u) returned %s, "
 112        "should have returned TIMERR_NOERROR\n", id, mmsys_error(rc));
 113
 114     trace("period = %u, resolution = %u\n", period, resolution);
 115
 116     for (i = 0; i < count; i++)
 117     {
 118         if (i == 0)
 119         {
 120             if (winetest_debug > 1)
 121                 trace("time[%d] = %lu\n", i, times[i]);
 122         }
 123         else
 124         {
 125             delta = times[i] - times[i - 1];
 126
 127             if (winetest_debug > 1)
 128                 trace("time[%d] = %lu delta = %d\n", i, times[i], delta);
 129
 130             sum += delta;
 131             deviation += ((delta - period) * (delta - period));
 132
 133             if (delta < dwMin)
 134                 dwMin = delta;
 135
 136             if (delta > dwMax)
 137                 dwMax = delta;
 138         }
 139     }
 140
 141     trace("min = %lu, max = %lu, average = %f, standard deviation = %f\n",
 142           dwMin, dwMax, sum / (count - 1), sqrt(deviation / (count - 2)));
 143 }
 144
 145 START_TEST(timer)
 146 {
 147     test_timeGetDevCaps();
 148
 149     if (tc.wPeriodMin <= 1) {
 150         test_timer(1, 0);
 151         test_timer(1, 1);
 152     }
 153
 154     if (tc.wPeriodMin <= 10) {
 155         test_timer(10, 0);
 156         test_timer(10, 1);
 157         test_timer(10, 10);
 158     }
 159
 160     if (tc.wPeriodMin <= 20) {
 161         test_timer(20, 0);
 162         test_timer(20, 1);
 163         test_timer(20, 10);
 164         test_timer(20, 20);
 165     }
 166 }