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annotate test/testtimer.c @ 3164:c5b2884c26b4

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Added an ifdef so that if you #define SDL_NO_COMPAT before you include SDL.h then SDL_compat.h will never be included in your code. This is useful for making sure that your code uses only SDL 1.3 features. It is also handy for finding things that are in SDL_compat.h that belong elsewhere.
author Bob Pendleton <bob@pendleton.com>
date Thu, 04 Jun 2009 21:00:45 +0000
parents c121d94672cb
children
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1
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2 /* Test program to check the resolution of the SDL timer on the current
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3 platform
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4 */
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5
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6 #include <stdlib.h>
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7 #include <stdio.h>
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8
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9 #include "SDL.h"
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10
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11 #define DEFAULT_RESOLUTION 1
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12
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13 static int ticks = 0;
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14
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15 static Uint32 SDLCALL
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16 ticktock(Uint32 interval)
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17 {
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18 ++ticks;
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19 return (interval);
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20 }
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21
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22 static Uint32 SDLCALL
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23 callback(Uint32 interval, void *param)
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24 {
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25 printf("Timer %d : param = %d\n", interval, (int) (uintptr_t) param);
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26 return interval;
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27 }
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28
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29 int
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30 main(int argc, char *argv[])
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31 {
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32 int desired;
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33 SDL_TimerID t1, t2, t3;
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34
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35 if (SDL_Init(SDL_INIT_TIMER) < 0) {
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36 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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37 return (1);
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38 }
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39
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40 /* Start the timer */
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41 desired = 0;
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42 if (argv[1]) {
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43 desired = atoi(argv[1]);
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44 }
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45 if (desired == 0) {
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46 desired = DEFAULT_RESOLUTION;
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47 }
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48 SDL_SetTimer(desired, ticktock);
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49
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50 /* Wait 10 seconds */
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51 printf("Waiting 10 seconds\n");
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52 SDL_Delay(10 * 1000);
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53
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54 /* Stop the timer */
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55 SDL_SetTimer(0, NULL);
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56
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57 /* Print the results */
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58 if (ticks) {
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59 fprintf(stderr,
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60 "Timer resolution: desired = %d ms, actual = %f ms\n",
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61 desired, (double) (10 * 1000) / ticks);
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62 }
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63
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64 /* Test multiple timers */
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65 printf("Testing multiple timers...\n");
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66 t1 = SDL_AddTimer(100, callback, (void *) 1);
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67 if (!t1)
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68 fprintf(stderr, "Could not create timer 1: %s\n", SDL_GetError());
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69 t2 = SDL_AddTimer(50, callback, (void *) 2);
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70 if (!t2)
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71 fprintf(stderr, "Could not create timer 2: %s\n", SDL_GetError());
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72 t3 = SDL_AddTimer(233, callback, (void *) 3);
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73 if (!t3)
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74 fprintf(stderr, "Could not create timer 3: %s\n", SDL_GetError());
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75
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76 /* Wait 10 seconds */
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77 printf("Waiting 10 seconds\n");
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78 SDL_Delay(10 * 1000);
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79
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80 printf("Removing timer 1 and waiting 5 more seconds\n");
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81 SDL_RemoveTimer(t1);
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82
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83 SDL_Delay(5 * 1000);
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84
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85 SDL_RemoveTimer(t2);
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86 SDL_RemoveTimer(t3);
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87
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88 SDL_Quit();
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89 return (0);
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90 }