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annotate src/timer/nds/SDL_systimer.c @ 4179:d7294b7c732d SDL-1.2

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Date: Fri, 24 Apr 2009 17:47:07 +0200 From: Stefan Klug Subject: Re: [SDL] SVN doesn't compile for wince the patch applied for Revision 4483 was seemingly not checked for side effects. It broke the WinCE build. The attached patch should fix these problems. I'm not using SDL 1.2 on CE anymore, and therefore haven't tested the patch... but at least it compiles ;-) Regards Stefan
author Sam Lantinga <slouken@libsdl.org>
date Thu, 07 May 2009 12:40:16 +0000
parents a1b03ba2fcd0
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rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_thread.h"
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25 #include "SDL_timer.h"
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26 #include "SDL_error.h"
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27 #include "../SDL_timer_c.h"
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28
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29 #include <nds.h>
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30
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31 #define timers2ms(tlow,thigh)(tlow | (thigh<<16)) >> 5
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32
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33
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34 void SDL_StartTicks(void)
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35 {
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36 TIMER0_DATA=0;
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37 TIMER1_DATA=0;
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38 TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
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39 TIMER1_CR=TIMER_ENABLE|TIMER_CASCADE;
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40 }
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41
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42 Uint32 SDL_GetTicks(void)
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43 {
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44 return timers2ms(TIMER0_DATA, TIMER1_DATA);
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45 }
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46
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47 void SDL_Delay(Uint32 ms)
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48 {
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49 Uint32 now;
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50 now=timers2ms(TIMER0_DATA, TIMER1_DATA);
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51 while((Uint32)timers2ms(TIMER0_DATA, TIMER1_DATA)<now+ms);
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52
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53 }
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54
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55 /* This is only called if the event thread is not running */
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56 int SDL_SYS_TimerInit(void)
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57 {
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58 return 0;
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59 }
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60
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61 void SDL_SYS_TimerQuit(void)
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62 {
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63 }
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64
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65 int SDL_SYS_StartTimer(void)
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66 {
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67 SDL_SetError("Timers not implemented on NDS");
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68 return -1;
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69 }
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70
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71 void SDL_SYS_StopTimer(void)
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72 {
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73 }