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annotate test/testtimer.c @ 3335:b8d313de8a65

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Adam Strzelecki to SDL Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit. Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes). (1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs (2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space (3) Copy other planes for planar YUVs in UpdateTexture (4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code Waiting for comments, -- Adam Strzelecki | nanoant.com
author Sam Lantinga <slouken@libsdl.org>
date Sun, 04 Oct 2009 04:03:37 +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 }