Mercurial > sdl-ios-xcode
annotate test/testwin.c @ 894:1d1a823904d8
Don't crash if the stretch routines are used on hardware surfaces
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 16 May 2004 21:08:55 +0000 |
| parents | 153f221b7d48 |
| children | be9c9c8f6d53 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Bring up a window and play with it */ | |
| 3 | |
| 4 #include <stdlib.h> | |
| 5 #include <stdio.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #define BENCHMARK_SDL | |
| 9 | |
| 10 #define NOTICE(X) printf("%s", X); | |
| 11 | |
| 12 #include "SDL.h" | |
| 13 | |
| 14 void DrawPict(SDL_Surface *screen, char *bmpfile, | |
| 15 int speedy, int flip, int nofade) | |
| 16 { | |
| 17 SDL_Surface *picture; | |
| 18 SDL_Rect dest, update; | |
| 19 int i, centered; | |
| 20 int ncolors; | |
| 21 SDL_Color *colors, *cmap; | |
| 22 | |
| 23 /* Load the image into a surface */ | |
| 24 if ( bmpfile == NULL ) { | |
| 25 bmpfile = "sample.bmp"; /* Sample image */ | |
| 26 } | |
| 27 fprintf(stderr, "Loading picture: %s\n", bmpfile); | |
| 28 picture = SDL_LoadBMP(bmpfile); | |
| 29 if ( picture == NULL ) { | |
| 30 fprintf(stderr, "Couldn't load %s: %s\n", bmpfile, | |
| 31 SDL_GetError()); | |
| 32 return; | |
| 33 } | |
| 34 | |
| 35 /* Set the display colors -- on a hicolor display this is a no-op */ | |
| 36 if ( picture->format->palette ) { | |
| 37 ncolors = picture->format->palette->ncolors; | |
| 38 colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); | |
| 39 cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); | |
| 40 memcpy(colors, picture->format->palette->colors, | |
| 41 ncolors*sizeof(SDL_Color)); | |
| 42 } else { | |
| 43 int r, g, b; | |
| 44 | |
| 45 /* Allocate 256 color palette */ | |
| 46 ncolors = 256; | |
| 47 colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); | |
| 48 cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); | |
| 49 | |
| 50 /* Set a 3,3,2 color cube */ | |
| 51 for ( r=0; r<8; ++r ) { | |
| 52 for ( g=0; g<8; ++g ) { | |
| 53 for ( b=0; b<4; ++b ) { | |
| 54 i = ((r<<5)|(g<<2)|b); | |
| 55 colors[i].r = r<<5; | |
| 56 colors[i].g = g<<5; | |
| 57 colors[i].b = b<<6; | |
| 58 } | |
| 59 } | |
| 60 } | |
| 61 } | |
| 62 NOTICE("testwin: setting colors\n"); | |
| 63 if ( ! SDL_SetColors(screen, colors, 0, ncolors) && | |
| 64 (screen->format->palette != NULL) ) { | |
| 65 fprintf(stderr, | |
| 66 "Warning: Couldn't set all of the colors, but SDL will map the image\n" | |
| 67 " (colormap fading will suffer - try the -warp option)\n" | |
| 68 ); | |
| 69 } | |
| 70 | |
| 71 /* Set the screen to black (not really necessary) */ | |
| 72 if ( SDL_LockSurface(screen) == 0 ) { | |
| 73 Uint32 black; | |
| 74 Uint8 *pixels; | |
| 75 | |
| 76 black = SDL_MapRGB(screen->format, 0, 0, 0); | |
| 77 pixels = (Uint8 *)screen->pixels; | |
| 78 for ( i=0; i<screen->h; ++i ) { | |
| 79 memset(pixels, black, | |
| 80 screen->w*screen->format->BytesPerPixel); | |
| 81 pixels += screen->pitch; | |
| 82 } | |
| 83 SDL_UnlockSurface(screen); | |
| 84 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 85 } | |
| 86 | |
| 87 /* Display the picture */ | |
| 88 if ( speedy ) { | |
| 89 SDL_Surface *displayfmt; | |
| 90 | |
| 91 fprintf(stderr, "Converting picture\n"); | |
| 92 displayfmt = SDL_DisplayFormat(picture); | |
| 93 if ( displayfmt == NULL ) { | |
| 94 fprintf(stderr, | |
| 95 "Couldn't convert image: %s\n", SDL_GetError()); | |
| 96 goto done; | |
| 97 } | |
| 98 SDL_FreeSurface(picture); | |
| 99 picture = displayfmt; | |
| 100 } | |
| 101 printf("(image surface located in %s memory)\n", | |
| 102 (picture->flags&SDL_HWSURFACE) ? "video" : "system"); | |
| 103 centered = (screen->w - picture->w)/2; | |
| 104 if ( centered < 0 ) { | |
| 105 centered = 0; | |
| 106 } | |
| 107 dest.y = (screen->h - picture->h)/2; | |
| 108 dest.w = picture->w; | |
| 109 dest.h = picture->h; | |
| 110 NOTICE("testwin: moving image\n"); | |
| 111 for ( i=0; i<=centered; ++i ) { | |
| 112 dest.x = i; | |
| 113 update = dest; | |
| 114 if ( SDL_BlitSurface(picture, NULL, screen, &update) < 0 ) { | |
| 115 fprintf(stderr, "Blit failed: %s\n", SDL_GetError()); | |
| 116 break; | |
| 117 } | |
| 118 if ( flip ) { | |
| 119 SDL_Flip(screen); | |
| 120 } else { | |
| 121 SDL_UpdateRects(screen, 1, &update); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 #ifdef SCREENSHOT | |
| 126 if ( SDL_SaveBMP(screen, "screen.bmp") < 0 ) | |
| 127 printf("Couldn't save screen: %s\n", SDL_GetError()); | |
| 128 #endif | |
| 129 | |
| 130 #ifndef BENCHMARK_SDL | |
| 131 /* Let it sit there for a while */ | |
| 132 SDL_Delay(5*1000); | |
| 133 #endif | |
| 134 /* Fade the colormap */ | |
| 135 if ( ! nofade ) { | |
| 136 int maxstep; | |
| 137 SDL_Color final; | |
| 138 SDL_Color palcolors[256]; | |
| 139 struct { | |
| 140 Sint16 r, g, b; | |
| 141 } cdist[256]; | |
| 142 | |
| 143 NOTICE("testwin: fading out...\n"); | |
| 144 memcpy(cmap, colors, ncolors*sizeof(SDL_Color)); | |
| 145 maxstep = 32-1; | |
| 146 final.r = 0xFF; | |
| 147 final.g = 0x00; | |
| 148 final.b = 0x00; | |
| 149 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); | |
| 150 for ( i=0; i<ncolors; ++i ) { | |
| 151 cdist[i].r = final.r-palcolors[i].r; | |
| 152 cdist[i].g = final.g-palcolors[i].g; | |
| 153 cdist[i].b = final.b-palcolors[i].b; | |
| 154 } | |
| 155 for ( i=0; i<=maxstep/2; ++i ) { /* halfway fade */ | |
| 156 int c; | |
| 157 for ( c=0; c<ncolors; ++c ) { | |
| 158 colors[c].r = | |
| 159 palcolors[c].r+((cdist[c].r*i))/maxstep; | |
| 160 colors[c].g = | |
| 161 palcolors[c].g+((cdist[c].g*i))/maxstep; | |
| 162 colors[c].b = | |
| 163 palcolors[c].b+((cdist[c].b*i))/maxstep; | |
| 164 } | |
| 165 SDL_SetColors(screen, colors, 0, ncolors); | |
| 166 SDL_Delay(1); | |
| 167 } | |
| 168 final.r = 0x00; | |
| 169 final.g = 0x00; | |
| 170 final.b = 0x00; | |
| 171 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); | |
| 172 for ( i=0; i<ncolors; ++i ) { | |
| 173 cdist[i].r = final.r-palcolors[i].r; | |
| 174 cdist[i].g = final.g-palcolors[i].g; | |
| 175 cdist[i].b = final.b-palcolors[i].b; | |
| 176 } | |
| 177 maxstep /= 2; | |
| 178 for ( i=0; i<=maxstep; ++i ) { /* finish fade out */ | |
| 179 int c; | |
| 180 for ( c=0; c<ncolors; ++c ) { | |
| 181 colors[c].r = | |
| 182 palcolors[c].r+((cdist[c].r*i))/maxstep; | |
| 183 colors[c].g = | |
| 184 palcolors[c].g+((cdist[c].g*i))/maxstep; | |
| 185 colors[c].b = | |
| 186 palcolors[c].b+((cdist[c].b*i))/maxstep; | |
| 187 } | |
| 188 SDL_SetColors(screen, colors, 0, ncolors); | |
| 189 SDL_Delay(1); | |
| 190 } | |
| 191 for ( i=0; i<ncolors; ++i ) { | |
| 192 colors[i].r = final.r; | |
| 193 colors[i].g = final.g; | |
| 194 colors[i].b = final.b; | |
| 195 } | |
| 196 SDL_SetColors(screen, colors, 0, ncolors); | |
| 197 NOTICE("testwin: fading in...\n"); | |
| 198 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); | |
| 199 for ( i=0; i<ncolors; ++i ) { | |
| 200 cdist[i].r = cmap[i].r-palcolors[i].r; | |
| 201 cdist[i].g = cmap[i].g-palcolors[i].g; | |
| 202 cdist[i].b = cmap[i].b-palcolors[i].b; | |
| 203 } | |
| 204 for ( i=0; i<=maxstep; ++i ) { /* 32 step fade in */ | |
| 205 int c; | |
| 206 for ( c=0; c<ncolors; ++c ) { | |
| 207 colors[c].r = | |
| 208 palcolors[c].r+((cdist[c].r*i))/maxstep; | |
| 209 colors[c].g = | |
| 210 palcolors[c].g+((cdist[c].g*i))/maxstep; | |
| 211 colors[c].b = | |
| 212 palcolors[c].b+((cdist[c].b*i))/maxstep; | |
| 213 } | |
| 214 SDL_SetColors(screen, colors, 0, ncolors); | |
| 215 SDL_Delay(1); | |
| 216 } | |
| 217 NOTICE("testwin: fading over\n"); | |
| 218 } | |
| 219 | |
| 220 done: | |
| 221 /* Free the picture and return */ | |
| 222 SDL_FreeSurface(picture); | |
| 223 free(colors); free(cmap); | |
| 224 return; | |
| 225 } | |
| 226 | |
| 227 int main(int argc, char *argv[]) | |
| 228 { | |
| 229 SDL_Surface *screen; | |
| 230 /* Options */ | |
| 231 int speedy, flip, nofade; | |
| 232 int delay; | |
| 233 int w, h; | |
| 234 int desired_bpp; | |
| 235 Uint32 video_flags; | |
| 236 #ifdef BENCHMARK_SDL | |
| 237 Uint32 then, now; | |
| 238 #endif | |
| 239 /* Set default options and check command-line */ | |
| 240 speedy = 0; | |
| 241 flip = 0; | |
| 242 nofade = 0; | |
| 243 delay = 1; | |
| 244 w = 640; | |
| 245 h = 480; | |
| 246 desired_bpp = 0; | |
| 247 video_flags = 0; | |
| 248 while ( argc > 1 ) { | |
| 249 if ( strcmp(argv[1], "-speedy") == 0 ) { | |
| 250 speedy = 1; | |
| 251 argv += 1; | |
| 252 argc -= 1; | |
| 253 } else | |
| 254 if ( strcmp(argv[1], "-nofade") == 0 ) { | |
| 255 nofade = 1; | |
| 256 argv += 1; | |
| 257 argc -= 1; | |
| 258 } else | |
| 259 if ( strcmp(argv[1], "-delay") == 0 ) { | |
| 260 if ( argv[2] ) { | |
| 261 delay = atoi(argv[2]); | |
| 262 argv += 2; | |
| 263 argc -= 2; | |
| 264 } else { | |
| 265 fprintf(stderr, | |
| 266 "The -delay option requires an argument\n"); | |
| 267 exit(1); | |
| 268 } | |
| 269 } else | |
| 270 if ( strcmp(argv[1], "-width") == 0 ) { | |
| 271 if ( argv[2] && ((w = atoi(argv[2])) > 0) ) { | |
| 272 argv += 2; | |
| 273 argc -= 2; | |
| 274 } else { | |
| 275 fprintf(stderr, | |
| 276 "The -width option requires an argument\n"); | |
| 277 exit(1); | |
| 278 } | |
| 279 } else | |
| 280 if ( strcmp(argv[1], "-height") == 0 ) { | |
| 281 if ( argv[2] && ((h = atoi(argv[2])) > 0) ) { | |
| 282 argv += 2; | |
| 283 argc -= 2; | |
| 284 } else { | |
| 285 fprintf(stderr, | |
| 286 "The -height option requires an argument\n"); | |
| 287 exit(1); | |
| 288 } | |
| 289 } else | |
| 290 if ( strcmp(argv[1], "-bpp") == 0 ) { | |
| 291 if ( argv[2] ) { | |
| 292 desired_bpp = atoi(argv[2]); | |
| 293 argv += 2; | |
| 294 argc -= 2; | |
| 295 } else { | |
| 296 fprintf(stderr, | |
| 297 "The -bpp option requires an argument\n"); | |
| 298 exit(1); | |
| 299 } | |
| 300 } else | |
| 301 if ( strcmp(argv[1], "-warp") == 0 ) { | |
| 302 video_flags |= SDL_HWPALETTE; | |
| 303 argv += 1; | |
| 304 argc -= 1; | |
| 305 } else | |
| 306 if ( strcmp(argv[1], "-hw") == 0 ) { | |
| 307 video_flags |= SDL_HWSURFACE; | |
| 308 argv += 1; | |
| 309 argc -= 1; | |
| 310 } else | |
| 311 if ( strcmp(argv[1], "-flip") == 0 ) { | |
| 312 video_flags |= SDL_DOUBLEBUF; | |
| 313 argv += 1; | |
| 314 argc -= 1; | |
| 315 } else | |
| 316 if ( strcmp(argv[1], "-fullscreen") == 0 ) { | |
| 317 video_flags |= SDL_FULLSCREEN; | |
| 318 argv += 1; | |
| 319 argc -= 1; | |
| 320 } else | |
| 321 break; | |
| 322 } | |
| 323 | |
| 324 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 325 fprintf(stderr, | |
| 326 "Couldn't initialize SDL: %s\n", SDL_GetError()); | |
| 327 exit(1); | |
| 328 } | |
| 329 atexit(SDL_Quit); /* Clean up on exit */ | |
| 330 | |
| 331 /* Initialize the display */ | |
| 332 screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags); | |
| 333 if ( screen == NULL ) { | |
| 334 fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", | |
| 335 w, h, desired_bpp, SDL_GetError()); | |
| 336 exit(1); | |
| 337 } | |
|
228
153f221b7d48
Give more info about the current video mode
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
338 printf("Set%s %dx%dx%d mode\n", |
|
153f221b7d48
Give more info about the current video mode
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
339 screen->flags & SDL_FULLSCREEN ? " fullscreen" : "", |
| 0 | 340 screen->w, screen->h, screen->format->BitsPerPixel); |
| 341 printf("(video surface located in %s memory)\n", | |
| 342 (screen->flags&SDL_HWSURFACE) ? "video" : "system"); | |
| 343 if ( screen->flags & SDL_DOUBLEBUF ) { | |
| 344 printf("Double-buffering enabled\n"); | |
| 345 flip = 1; | |
| 346 } | |
| 347 | |
| 348 /* Set the window manager title bar */ | |
| 349 SDL_WM_SetCaption("SDL test window", "testwin"); | |
| 350 | |
| 351 /* Do all the drawing work */ | |
| 352 #ifdef BENCHMARK_SDL | |
| 353 then = SDL_GetTicks(); | |
| 354 DrawPict(screen, argv[1], speedy, flip, nofade); | |
| 355 now = SDL_GetTicks(); | |
| 356 printf("Time: %d milliseconds\n", now-then); | |
| 357 #else | |
| 358 DrawPict(screen, argv[1], speedy, flip, nofade); | |
| 359 #endif | |
| 360 SDL_Delay(delay*1000); | |
| 361 return(0); | |
| 362 } |