multimedia/time.c

   1 /*
   2  * MMSYTEM time functions
   3  *
   4  * Copyright 1993 Martin Ayotte
   5  */
   6
   7 #ifndef WINELIB
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include "windows.h"
  13 #include "win.h"
  14 #include "ldt.h"
  15 #include "module.h"
  16 #include "callback.h"
  17 #include "user.h"
  18 #include "driver.h"
  19 #include "mmsystem.h"
  20 #include "stddebug.h"
  21 #include "debug.h"
  22
  23 static BOOL mmTimeStarted = FALSE;
  24 static MMTIME mmSysTimeMS;
  25 static MMTIME mmSysTimeSMPTE;
  26
  27 typedef struct tagTIMERENTRY {
  28     WORD wDelay;
  29     WORD wResol;
  30     FARPROC lpFunc;
  31     HINSTANCE hInstance;
  32     DWORD dwUser;
  33     WORD wFlags;
  34     WORD wTimerID;
  35     WORD wCurTime;
  36     struct tagTIMERENTRY *Next;
  37     struct tagTIMERENTRY *Prev;
  38 } TIMERENTRY, *LPTIMERENTRY;
  39
  40 static LPTIMERENTRY lpTimerList = NULL;
  41
  42 /**************************************************************************
  43  *                              MMSysTimeCallback       [internal]
  44  */
  45 WORD MMSysTimeCallback(HWND hWnd, WORD wMsg, INT nID, DWORD dwTime)
  46 {
  47     LPTIMERENTRY lpTimer = lpTimerList;
  48     mmSysTimeMS.u.ms += 33;
  49     mmSysTimeSMPTE.u.smpte.frame++;
  50     while (lpTimer != NULL) {
  51         lpTimer->wCurTime--;
  52         if (lpTimer->wCurTime == 0) {
  53             lpTimer->wCurTime = lpTimer->wDelay;
  54             if (lpTimer->lpFunc != (FARPROC) NULL) {
  55                 dprintf_mmtime(stddeb, "MMSysTimeCallback // before CallBack16 !\n");
  56                 dprintf_mmtime(stddeb, "MMSysTimeCallback // lpFunc=%08lx wTimerID=%04X dwUser=%08lX !\n",
  57                         lpTimer->lpFunc, lpTimer->wTimerID, lpTimer->dwUser);
  58                 dprintf_mmtime(stddeb, "MMSysTimeCallback // hInstance=%04X !\n", lpTimer->hInstance);
  59
  60 /* This is wrong (lpFunc is NULL all the time)
  61
  62                 lpFunc = MODULE_GetEntryPoint( lpTimer->hInstance,
  63                          MODULE_GetOrdinal(lpTimer->hInstance,"TimerCallBack" ));
  64                 dprintf_mmtime(stddeb, "MMSysTimeCallback // lpFunc=%08lx !\n", lpFunc);
  65 */
  66
  67
  68 /*        - TimeProc callback that is called here is something strange, under Windows 3.1x it is called
  69  *          during interrupt time,  is allowed to execute very limited number of API calls (like
  70  *          PostMessage), and must reside in DLL (therefore uses stack of active application). So I
  71  *          guess current implementation via SetTimer has to be improved upon.
  72  */
  73
  74                 CallTo16_word_wwlll(lpTimer->lpFunc,
  75                         lpTimer->hInstance, lpTimer->wTimerID,
  76                         0, lpTimer->dwUser, 0, 0);
  77
  78                 dprintf_mmtime(stddeb, "MMSysTimeCallback // after CallBack16 !\n");
  79                 fflush(stdout);
  80             }
  81             if (lpTimer->wFlags & TIME_ONESHOT)
  82                 timeKillEvent(lpTimer->wTimerID);
  83         }
  84         lpTimer = lpTimer->Next;
  85     }
  86     return 0;
  87 }
  88
  89 /**************************************************************************
  90  *                              StartMMTime                     [internal]
  91  */
  92 void StartMMTime()
  93 {
  94     if (!mmTimeStarted) {
  95         mmTimeStarted = TRUE;
  96         mmSysTimeMS.wType = TIME_MS;
  97         mmSysTimeMS.u.ms = 0;
  98         mmSysTimeSMPTE.wType = TIME_SMPTE;
  99         mmSysTimeSMPTE.u.smpte.hour = 0;
 100         mmSysTimeSMPTE.u.smpte.min = 0;
 101         mmSysTimeSMPTE.u.smpte.sec = 0;
 102         mmSysTimeSMPTE.u.smpte.frame = 0;
 103         mmSysTimeSMPTE.u.smpte.fps = 0;
 104         mmSysTimeSMPTE.u.smpte.dummy = 0;
 105         SetTimer(0, 1, 33, MODULE_GetWndProcEntry16("MMSysTimeCallback"));
 106     }
 107 }
 108
 109 /**************************************************************************
 110  *                              timeGetSystemTime       [MMSYSTEM.601]
 111  */
 112 WORD timeGetSystemTime(LPMMTIME lpTime, WORD wSize)
 113 {
 114     dprintf_mmsys(stddeb, "timeGetSystemTime(%p, %u);\n", lpTime, wSize);
 115     if (!mmTimeStarted)
 116         StartMMTime();
 117     return 0;
 118 }
 119
 120 /**************************************************************************
 121  *                              timeSetEvent            [MMSYSTEM.602]
 122  */
 123 WORD timeSetEvent(WORD wDelay, WORD wResol, LPTIMECALLBACK lpFunc,
 124                   DWORD dwUser, WORD wFlags)
 125 {
 126     WORD wNewID = 0;
 127     LPTIMERENTRY lpNewTimer;
 128     LPTIMERENTRY lpTimer = lpTimerList;
 129     dprintf_mmtime(stddeb, "timeSetEvent(%u, %u, %p, %08lX, %04X);\n",
 130                   wDelay, wResol, lpFunc, dwUser, wFlags);
 131     if (!mmTimeStarted)
 132         StartMMTime();
 133     lpNewTimer = (LPTIMERENTRY) malloc(sizeof(TIMERENTRY));
 134     if (lpNewTimer == NULL)
 135         return 0;
 136     while (lpTimer != NULL) {
 137         wNewID = MAX(wNewID, lpTimer->wTimerID);
 138         if (lpTimer->Next == NULL)
 139             break;
 140         lpTimer = lpTimer->Next;
 141     }
 142     if (lpTimerList == NULL) {
 143         lpTimerList = lpNewTimer;
 144         lpNewTimer->Prev = NULL;
 145     } else {
 146         lpTimer->Next = lpNewTimer;
 147         lpNewTimer->Prev = lpTimer;
 148     }
 149     lpNewTimer->Next = NULL;
 150     lpNewTimer->wTimerID = wNewID + 1;
 151     lpNewTimer->wCurTime = wDelay;
 152     lpNewTimer->wDelay = wDelay;
 153     lpNewTimer->wResol = wResol;
 154     lpNewTimer->lpFunc = (FARPROC) lpFunc;
 155     lpNewTimer->hInstance = GetTaskDS();
 156         dprintf_mmtime(stddeb, "timeSetEvent // hInstance=%04X !\n", lpNewTimer->hInstance);
 157         dprintf_mmtime(stddeb, "timeSetEvent // PTR_SEG_TO_LIN(lpFunc)=%p !\n",
 158                                 PTR_SEG_TO_LIN(lpFunc));
 159     lpNewTimer->dwUser = dwUser;
 160     lpNewTimer->wFlags = wFlags;
 161     return lpNewTimer->wTimerID;
 162 }
 163
 164 /**************************************************************************
 165  *                              timeKillEvent           [MMSYSTEM.603]
 166  */
 167 WORD timeKillEvent(WORD wID)
 168 {
 169     LPTIMERENTRY lpTimer = lpTimerList;
 170     while (lpTimer != NULL) {
 171         if (wID == lpTimer->wTimerID) {
 172             if (lpTimer->Prev != NULL)
 173                 lpTimer->Prev->Next = lpTimer->Next;
 174             if (lpTimer->Next != NULL)
 175                 lpTimer->Next->Prev = lpTimer->Prev;
 176             free(lpTimer);
 177             return TRUE;
 178         }
 179         lpTimer = lpTimer->Next;
 180     }
 181     return 0;
 182 }
 183
 184 /**************************************************************************
 185  *                              timeGetDevCaps          [MMSYSTEM.604]
 186  */
 187 WORD timeGetDevCaps(LPTIMECAPS lpCaps, WORD wSize)
 188 {
 189     dprintf_mmsys(stddeb, "timeGetDevCaps(%p, %u) !\n", lpCaps, wSize);
 190     return 0;
 191 }
 192
 193 /**************************************************************************
 194  *                              timeBeginPeriod         [MMSYSTEM.605]
 195  */
 196 WORD timeBeginPeriod(WORD wPeriod)
 197 {
 198     dprintf_mmsys(stddeb, "timeBeginPeriod(%u) !\n", wPeriod);
 199     if (!mmTimeStarted)
 200         StartMMTime();
 201     return 0;
 202 }
 203
 204 /**************************************************************************
 205  *                              timeEndPeriod           [MMSYSTEM.606]
 206  */
 207 WORD timeEndPeriod(WORD wPeriod)
 208 {
 209     dprintf_mmsys(stddeb, "timeEndPeriod(%u) !\n", wPeriod);
 210     return 0;
 211 }
 212
 213 /**************************************************************************
 214  *                              timeGetTime             [MMSYSTEM.607]
 215  */
 216 DWORD timeGetTime()
 217 {
 218     dprintf_mmsys(stddeb, "timeGetTime(); !\n");
 219     if (!mmTimeStarted)
 220         StartMMTime();
 221     return 0;
 222 }
 223
 224 #endif /* WINELIB */