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annotate test/testtimer.c @ 2349:0381047f2210 gsoc2008_iphone

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The class SDL_uikitappdelegate acts as the UIApplicationDelegate for an iPhone SDL project. This class is reponsible for application control flow, including initial setup of working directory, forwarding command line arguments to the user's main function, and handling application termination.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Thu, 17 Jul 2008 22:29:37 +0000
parents c121d94672cb
children
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0
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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 }