diff --git a/src/timer/win32/SDL_systimer.c b/src/timer/win32/SDL_systimer.c index d9b5ce39d..16f06d75f 100644 --- a/src/timer/win32/SDL_systimer.c +++ b/src/timer/win32/SDL_systimer.c @@ -33,8 +33,11 @@ static char rcsid = #include "SDL_error.h" #ifdef _WIN32_WCE -#define USE_GETTICKCOUNT -#define USE_SETTIMER + #error This is WinCE. Please use src/timer/wince/SDL_systimer.c instead. + + /* but if you really want to use this file, use these #defines... */ + #define USE_GETTICKCOUNT + #define USE_SETTIMER #endif #define TIME_WRAP_VALUE (~(DWORD)0) diff --git a/src/timer/wince/SDL_systimer.c b/src/timer/wince/SDL_systimer.c new file mode 100644 index 000000000..173b331ec --- /dev/null +++ b/src/timer/wince/SDL_systimer.c @@ -0,0 +1,147 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2004 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +#include +#include + +#include "SDL_timer.h" +#include "SDL_timer_c.h" +#include "SDL_error.h" + +static Uint64 start_date; +static Uint64 start_ticks; + +static Uint64 wce_ticks(void) +{ + return((Uint64)GetTickCount()); +} + +static Uint64 wce_date(void) +{ + union + { + FILETIME ftime; + Uint64 itime; + } ftime; + SYSTEMTIME stime; + + GetSystemTime(&stime); + SystemTimeToFileTime(&stime,&ftime.ftime); + ftime.itime/=10000; // Convert 100ns intervals to 1ms intervals + // Remove ms portion, which can't be relied on + ftime.itime -= (ftime.itime % 1000); + return(ftime.itime); +} + +static Sint32 wce_rel_ticks(void) +{ + return((Sint32)(wce_ticks()-start_ticks)); +} + +static Sint32 wce_rel_date(void) +{ + return((Sint32)(wce_date()-start_date)); +} + +/* Return time in ms relative to when SDL was started */ +Uint32 SDL_GetTicks() +{ + Sint32 offset=wce_rel_date()-wce_rel_ticks(); + if((offset < -1000) || (offset > 1000)) + { +// fprintf(stderr,"Time desync(%+d), resyncing\n",offset/1000); + start_ticks-=offset; + } + + return((Uint32)wce_rel_ticks()); +} + +/* Give up approx. givem milliseconds to the OS. */ +void SDL_Delay(Uint32 ms) +{ + Sleep(ms); +} + +/* Recard start-time of application for reference */ +void SDL_StartTicks(void) +{ + start_date=wce_date(); + start_ticks=wce_ticks(); +} + +static UINT WIN_timer; + +int SDL_SYS_TimerInit(void) +{ + return(0); +} + +void SDL_SYS_TimerQuit(void) +{ + return; +} + +/* Forward declaration because this is called by the timer callback */ +int SDL_SYS_StartTimer(void); + +static VOID CALLBACK TimerCallbackProc(HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime) +{ + Uint32 ms; + + ms = SDL_alarm_callback(SDL_alarm_interval); + if ( ms != SDL_alarm_interval ) { + KillTimer(NULL, idEvent); + if ( ms ) { + SDL_alarm_interval = ROUND_RESOLUTION(ms); + SDL_SYS_StartTimer(); + } else { + SDL_alarm_interval = 0; + } + } +} + +int SDL_SYS_StartTimer(void) +{ + int retval; + + WIN_timer = SetTimer(NULL, 0, SDL_alarm_interval, TimerCallbackProc); + if ( WIN_timer ) { + retval = 0; + } else { + retval = -1; + } + return retval; +} + +void SDL_SYS_StopTimer(void) +{ + if ( WIN_timer ) { + KillTimer(NULL, WIN_timer); + WIN_timer = 0; + } +} +