Mercurial > sdl-ios-xcode
annotate test/checkkeys.c @ 997:3bf4103b2b89
Date: Sat, 27 Nov 2004 13:35:43 +0100
From: "Martin Bickel"
Subject: [SDL] Patch: fixing uninitilized palette
while running Valgrind over my application I found the following
problem in SDL:
The function MapNto1 allocates SDL_Color colors[256] but does not
initialize it.
SDL_DitherColors is then called which initialized the r, g and b
component, but not the 'unused' component of each color.
When Map1to1 is called from MapNto1, it runs a memcmp on the colors,
which also evaluates the unused component and therefor returns
differences much more often than necessary.
So the 'unused' component of SDL_Color should be initialized. This
patch does this by calling memset for the whole array in MapNto1 .
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 30 Nov 2004 14:28:20 +0000 |
| parents | 806fcbde0af3 |
| children | be9c9c8f6d53 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple program: Loop, watching keystrokes | |
| 3 Note that you need to call SDL_PollEvent() or SDL_WaitEvent() to | |
| 4 pump the event loop and catch keystrokes. | |
| 5 */ | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 #include <stdlib.h> | |
| 9 #include <string.h> | |
| 10 | |
| 11 #include "SDL.h" | |
| 12 | |
| 13 static void print_modifiers(void) | |
| 14 { | |
| 15 int mod; | |
| 16 printf(" modifiers:"); | |
| 17 mod = SDL_GetModState(); | |
| 18 if(!mod) { | |
| 19 printf(" (none)"); | |
| 20 return; | |
| 21 } | |
| 22 if(mod & KMOD_LSHIFT) | |
| 23 printf(" LSHIFT"); | |
| 24 if(mod & KMOD_RSHIFT) | |
| 25 printf(" RSHIFT"); | |
| 26 if(mod & KMOD_LCTRL) | |
| 27 printf(" LCTRL"); | |
| 28 if(mod & KMOD_RCTRL) | |
| 29 printf(" RCTRL"); | |
| 30 if(mod & KMOD_LALT) | |
| 31 printf(" LALT"); | |
| 32 if(mod & KMOD_RALT) | |
| 33 printf(" RALT"); | |
| 34 if(mod & KMOD_LMETA) | |
| 35 printf(" LMETA"); | |
| 36 if(mod & KMOD_RMETA) | |
| 37 printf(" RMETA"); | |
| 38 if(mod & KMOD_NUM) | |
| 39 printf(" NUM"); | |
| 40 if(mod & KMOD_CAPS) | |
| 41 printf(" CAPS"); | |
| 42 if(mod & KMOD_MODE) | |
| 43 printf(" MODE"); | |
| 44 } | |
| 45 | |
| 46 static void PrintKey(SDL_keysym *sym, int pressed) | |
| 47 { | |
| 48 /* Print the keycode, name and state */ | |
| 49 if ( sym->sym ) { | |
| 50 printf("Key %s: %d-%s ", pressed ? "pressed" : "released", | |
| 51 sym->sym, SDL_GetKeyName(sym->sym)); | |
| 52 } else { | |
| 53 printf("Unknown Key (scancode = %d) %s ", sym->scancode, | |
| 54 pressed ? "pressed" : "released"); | |
| 55 } | |
| 56 | |
| 57 /* Print the translated character, if one exists */ | |
| 58 if ( sym->unicode ) { | |
| 59 /* Is it a control-character? */ | |
| 60 if ( sym->unicode < ' ' ) { | |
| 61 printf(" (^%c)", sym->unicode+'@'); | |
| 62 } else { | |
| 63 #ifdef UNICODE | |
| 64 printf(" (%c)", sym->unicode); | |
| 65 #else | |
| 66 /* This is a Latin-1 program, so only show 8-bits */ | |
| 67 if ( !(sym->unicode & 0xFF00) ) | |
| 68 printf(" (%c)", sym->unicode); | |
| 69 #endif | |
| 70 } | |
| 71 } | |
| 72 print_modifiers(); | |
| 73 printf("\n"); | |
| 74 } | |
| 75 | |
| 76 int main(int argc, char *argv[]) | |
| 77 { | |
| 78 SDL_Event event; | |
| 79 int done; | |
| 473 | 80 Uint32 videoflags; |
| 0 | 81 |
| 82 /* Initialize SDL */ | |
| 83 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 84 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 85 exit(1); | |
| 86 } | |
| 87 atexit(SDL_Quit); | |
| 88 | |
| 473 | 89 videoflags = SDL_SWSURFACE; |
|
493
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
90 while( argc > 1 ) { |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
91 --argc; |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
92 if ( argv[argc] && !strcmp(argv[argc], "-fullscreen") ) { |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
93 videoflags |= SDL_FULLSCREEN; |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
94 } else { |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
95 fprintf(stderr, "Usage: %s [-fullscreen]\n", argv[0]); |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
96 exit(1); |
|
806fcbde0af3
Fixed a crash bug in checkkeys.c (thanks John!)
Sam Lantinga <slouken@libsdl.org>
parents:
473
diff
changeset
|
97 } |
| 473 | 98 } |
| 99 | |
| 0 | 100 /* Set 640x480 video mode */ |
| 473 | 101 if ( SDL_SetVideoMode(640, 480, 0, videoflags) == NULL ) { |
| 0 | 102 fprintf(stderr, "Couldn't set 640x480 video mode: %s\n", |
| 103 SDL_GetError()); | |
| 104 exit(2); | |
| 105 } | |
| 106 | |
| 107 /* Enable UNICODE translation for keyboard input */ | |
| 108 SDL_EnableUNICODE(1); | |
| 109 | |
| 110 /* Enable auto repeat for keyboard input */ | |
| 111 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, | |
| 112 SDL_DEFAULT_REPEAT_INTERVAL); | |
| 113 | |
| 114 /* Watch keystrokes */ | |
| 115 done = 0; | |
| 116 while ( !done ) { | |
| 117 /* Check for events */ | |
| 118 SDL_WaitEvent(&event); | |
| 119 switch (event.type) { | |
| 120 case SDL_KEYDOWN: | |
| 121 PrintKey(&event.key.keysym, 1); | |
| 122 break; | |
| 123 case SDL_KEYUP: | |
| 124 PrintKey(&event.key.keysym, 0); | |
| 125 break; | |
| 126 case SDL_MOUSEBUTTONDOWN: | |
| 127 /* Any button press quits the app... */ | |
| 128 case SDL_QUIT: | |
| 129 done = 1; | |
| 130 break; | |
| 131 default: | |
| 132 break; | |
| 133 } | |
| 134 } | |
| 135 return(0); | |
| 136 } |