view src/timer/wince/SDL_systimer.c @ 2825:620a91b6d263

Date: Tue, 02 Dec 2008 23:38:26 +0100 From: Couriersud Subject: Re: SDL: Keyboard layout unknown I have attached a diff which will add an additional keyboard layout to the x11 driver. The issue arose, when I moved to ubuntu intrepid. I was only able to map the keys available on my keyboard. The differences to the existing keyboard was the mapping of HOME,UP,DOWN and some other keys. Now only one issue remains. Dead keys (e.g. ^, ` ') on european keyboards do not generate a "scancode" event. Just a text event when the key is composed (e.g. ?? ?? ??).
author Sam Lantinga <slouken@libsdl.org>
date Wed, 03 Dec 2008 04:32:24 +0000
parents c121d94672cb
children 99210400e8b9
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 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 */
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