e14743d1 |
1 | |
2 | /* Test program to check the resolution of the SDL timer on the current |
3 | platform |
4 | */ |
5 | |
6 | #include <stdlib.h> |
7 | #include <stdio.h> |
8 | |
9 | #include "SDL.h" |
10 | |
11 | #define DEFAULT_RESOLUTION 1 |
12 | |
13 | static int ticks = 0; |
14 | |
15 | static Uint32 SDLCALL ticktock(Uint32 interval) |
16 | { |
17 | ++ticks; |
18 | return(interval); |
19 | } |
20 | |
21 | static Uint32 SDLCALL callback(Uint32 interval, void *param) |
22 | { |
23 | printf("Timer %d : param = %d\n", interval, (int)(uintptr_t)param); |
24 | return interval; |
25 | } |
26 | |
27 | int main(int argc, char *argv[]) |
28 | { |
29 | int desired; |
30 | SDL_TimerID t1, t2, t3; |
31 | |
32 | if ( SDL_Init(SDL_INIT_TIMER) < 0 ) { |
33 | fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); |
34 | return(1); |
35 | } |
36 | |
37 | /* Start the timer */ |
38 | desired = 0; |
39 | if ( argv[1] ) { |
40 | desired = atoi(argv[1]); |
41 | } |
42 | if ( desired == 0 ) { |
43 | desired = DEFAULT_RESOLUTION; |
44 | } |
45 | SDL_SetTimer(desired, ticktock); |
46 | |
47 | /* Wait 10 seconds */ |
48 | printf("Waiting 10 seconds\n"); |
49 | SDL_Delay(10*1000); |
50 | |
51 | /* Stop the timer */ |
52 | SDL_SetTimer(0, NULL); |
53 | |
54 | /* Print the results */ |
55 | if ( ticks ) { |
56 | fprintf(stderr, |
57 | "Timer resolution: desired = %d ms, actual = %f ms\n", |
58 | desired, (double)(10*1000)/ticks); |
59 | } |
60 | |
61 | /* Test multiple timers */ |
62 | printf("Testing multiple timers...\n"); |
63 | t1 = SDL_AddTimer(100, callback, (void*)1); |
64 | if(!t1) |
65 | fprintf(stderr,"Could not create timer 1: %s\n", SDL_GetError()); |
66 | t2 = SDL_AddTimer(50, callback, (void*)2); |
67 | if(!t2) |
68 | fprintf(stderr,"Could not create timer 2: %s\n", SDL_GetError()); |
69 | t3 = SDL_AddTimer(233, callback, (void*)3); |
70 | if(!t3) |
71 | fprintf(stderr,"Could not create timer 3: %s\n", SDL_GetError()); |
72 | |
73 | /* Wait 10 seconds */ |
74 | printf("Waiting 10 seconds\n"); |
75 | SDL_Delay(10*1000); |
76 | |
77 | printf("Removing timer 1 and waiting 5 more seconds\n"); |
78 | SDL_RemoveTimer(t1); |
79 | |
80 | SDL_Delay(5*1000); |
81 | |
82 | SDL_RemoveTimer(t2); |
83 | SDL_RemoveTimer(t3); |
84 | |
85 | SDL_Quit(); |
86 | return(0); |
87 | } |