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annotate src/timer/dummy/SDL_systimer.c @ 1585:980d2a0dc2a3

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Date: Tue, 4 Mar 2003 15:05:31 -0800 From: "Jim" Subject: [SDL] Frame Buffer patches... Okay I'm new at patch generation - so please tell me if there's a better way I could have done this. Attached are two patch files generated with 'cvs diff -u' SDL-fb-open-lock.patch applies to SDL_fbvideo.c Modifies the open loop to check /dev/fb/0 found on devfs... Modifies the lock code to return failure if the current virtual terminal is not the one opened for frame buffer writing... Lock would hang forever if switched away (ctrl-alt-F1) ... SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c Switches default mouse mode based on SDL_MOUSEDRV - currently only accepts PS2 - otherwise default is MS Mouse. When the screen is switched - exisiting code (wrapped in ifdef SAVE_SCREEN_COTENTS) would save the wrong bit of the screen.... ( I run frame buffer 1600x1200, the size I requested was 800x600 - the save would save the top 800 lines (non biased) and restore them... Adding screen->offset fixed that ) However, if that option is not set, then a call to SDL_UpdateRect (full screen) is made. (which may have had it's contents changed since the screen is not entirely locked because of lock-failure patch) Jim [patches slightly tweaked for SDL 1.2.10]
author Sam Lantinga <slouken@libsdl.org>
date Wed, 22 Mar 2006 07:48:22 +0000
parents b2b476a4a73c
children 92947e3a18db
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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_timer.h"
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25 #include "../SDL_timer_c.h"
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26
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27 void SDL_StartTicks(void)
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28 {
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29 }
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30
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31 Uint32 SDL_GetTicks (void)
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32 {
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33 SDL_Unsupported();
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34 return 0;
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35 }
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36
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37 void SDL_Delay (Uint32 ms)
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38 {
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39 SDL_Unsupported();
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40 }
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41
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42 #include "SDL_thread.h"
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43
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44 /* Data to handle a single periodic alarm */
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45 static int timer_alive = 0;
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46 static SDL_Thread *timer = NULL;
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47
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48 static int RunTimer(void *unused)
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49 {
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50 while ( timer_alive ) {
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51 if ( SDL_timer_running ) {
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52 SDL_ThreadedTimerCheck();
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53 }
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54 SDL_Delay(1);
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55 }
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56 return(0);
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57 }
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58
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59 /* This is only called if the event thread is not running */
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60 int SDL_SYS_TimerInit(void)
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61 {
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62 timer_alive = 1;
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63 timer = SDL_CreateThread(RunTimer, NULL);
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64 if ( timer == NULL )
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65 return(-1);
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66 return(SDL_SetTimerThreaded(1));
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67 }
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68
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69 void SDL_SYS_TimerQuit(void)
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70 {
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71 timer_alive = 0;
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72 if ( timer ) {
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73 SDL_WaitThread(timer, NULL);
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74 timer = NULL;
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75 }
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76 }
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77
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78 int SDL_SYS_StartTimer(void)
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79 {
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80 SDL_SetError("Internal logic error: threaded timer in use");
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81 return(-1);
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82 }
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83
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84 void SDL_SYS_StopTimer(void)
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85 {
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86 return;
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87 }