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annotate src/timer/nds/SDL_systimer.c @ 4215:d83830711a5b SDL-1.2

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Fixed bug #615 Scott McCreary 2008-08-21 10:48:14 PDT This patch adds support for Haiku. http://ports.haiku-files.org/browser/haikuports/trunk/media-libs/libsdl/SDL-1.2.13-haiku.diff Haiku is an open-source recreation of BeOS. It has better POSIX compliance than beOS did, and other improved features, which in some cases causes us to have to "undo" previous BeOS workarounds. Here's our port log entry for it, showing the steps to force the changes into configure and Makefile: http://ports.haiku-files.org/wiki/media-libs/libsdl/1.2.13/1 Note that this was only tried on 1.2.13 stable so far. Haiku is using a newer config.guess / config.sub that doesn't yet seem to be in the released libtool, so we are having to copy it in for now. http://haiku-files.org/files/optional-packages/
author Sam Lantinga <slouken@libsdl.org>
date Mon, 21 Sep 2009 09:18:42 +0000
parents a1b03ba2fcd0
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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 }