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-rw-r--r--distrib/sdl-1.2.15/src/timer/wince/SDL_systimer.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/timer/wince/SDL_systimer.c b/distrib/sdl-1.2.15/src/timer/wince/SDL_systimer.c
new file mode 100644
index 0000000..2b018b0
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/timer/wince/SDL_systimer.c
@@ -0,0 +1,198 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#ifdef SDL_TIMER_WINCE
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <mmsystem.h>
+
+#include "SDL_thread.h"
+#include "SDL_timer.h"
+#include "../SDL_timer_c.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;
+
+#if ( _WIN32_WCE <= 420 )
+
+static HANDLE timersThread = 0;
+static HANDLE timersQuitEvent = 0;
+
+DWORD TimersThreadProc(void *data)
+{
+ while(WaitForSingleObject(timersQuitEvent, 10) == WAIT_TIMEOUT)
+ {
+ SDL_ThreadedTimerCheck();
+ }
+ return 0;
+}
+
+int SDL_SYS_TimerInit(void)
+{
+ // create a thread to process a threaded timers
+ // SetTimer does not suit the needs because
+ // TimerCallbackProc will be called only when WM_TIMER occured
+
+ timersQuitEvent = CreateEvent(0, TRUE, FALSE, 0);
+ if( !timersQuitEvent )
+ {
+ SDL_SetError("Cannot create event for timers thread");
+ return -1;
+ }
+ timersThread = CreateThread(NULL, 0, TimersThreadProc, 0, 0, 0);
+ if( !timersThread )
+ {
+ SDL_SetError("Cannot create timers thread, check amount of RAM available");
+ return -1;
+ }
+ SetThreadPriority(timersThread, THREAD_PRIORITY_HIGHEST);
+
+ return(SDL_SetTimerThreaded(1));
+}
+
+void SDL_SYS_TimerQuit(void)
+{
+ SetEvent(timersQuitEvent);
+ if( WaitForSingleObject(timersThread, 2000) == WAIT_TIMEOUT )
+ TerminateThread(timersThread, 0);
+ CloseHandle(timersThread);
+ CloseHandle(timersQuitEvent);
+ return;
+}
+
+#else
+
+#pragma comment(lib, "mmtimer.lib")
+
+/* Data to handle a single periodic alarm */
+static UINT timerID = 0;
+
+static void CALLBACK HandleAlarm(UINT uID, UINT uMsg, DWORD dwUser,
+ DWORD dw1, DWORD dw2)
+{
+ SDL_ThreadedTimerCheck();
+}
+
+
+int SDL_SYS_TimerInit(void)
+{
+ MMRESULT result;
+
+ /* Set timer resolution */
+ result = timeBeginPeriod(TIMER_RESOLUTION);
+ if ( result != TIMERR_NOERROR ) {
+ SDL_SetError("Warning: Can't set %d ms timer resolution",
+ TIMER_RESOLUTION);
+ }
+ /* Allow 10 ms of drift so we don't chew on CPU */
+ timerID = timeSetEvent(TIMER_RESOLUTION,1,HandleAlarm,0,TIME_PERIODIC);
+ if ( ! timerID ) {
+ SDL_SetError("timeSetEvent() failed");
+ return(-1);
+ }
+ return(SDL_SetTimerThreaded(1));
+}
+
+void SDL_SYS_TimerQuit(void)
+{
+ if ( timerID ) {
+ timeKillEvent(timerID);
+ }
+ timeEndPeriod(TIMER_RESOLUTION);
+}
+
+#endif
+
+int SDL_SYS_StartTimer(void)
+{
+ SDL_SetError("Internal logic error: WinCE uses threaded timer");
+ return(-1);
+}
+
+void SDL_SYS_StopTimer(void)
+{
+ return;
+}
+
+#endif /* SDL_TIMER_WINCE */